Create module structure in DMI PluginHEADmaster

To push the stub in  to DMI Plugin the Plugin will need to be modulized akin to CPS/NCMP. This involves creating a new module in the repo and porting the packages in src into this module

Issue-ID: CPS-2284

Change-Id: Iffa4eded4e49c220891fe73c30ea3b2f12a9e66d
Signed-off-by: egernug <gerard.nugent@est.tech>

68 files changed, 5308 insertions, 0 deletions

diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/Application.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/Application.java
new file mode 100644
index 00000000..69d21ba1
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/Application.java
@@ -0,0 +1,33 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(final String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/DmiConfiguration.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/DmiConfiguration.java
new file mode 100644
index 00000000..83ef6f89
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/DmiConfiguration.java
@@ -0,0 +1,86 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config;
+
+import lombok.Getter;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * Provides access to cps base url and cps authentication.
+ */
+@Configuration
+public class DmiConfiguration {
+
+    private static final int TIMEOUT = 5000;
+
+    @Getter
+    @Component
+    public static class CpsProperties {
+
+        @Value("${cps-core.baseUrl}")
+        private String baseUrl;
+        @Value("${cps-core.dmiRegistrationUrl}")
+        private String dmiRegistrationUrl;
+        @Value("${cps-core.auth.username}")
+        private String authUsername;
+        @Value("${cps-core.auth.password}")
+        private String authPassword;
+    }
+
+    @Getter
+    @Component
+    public static class SdncProperties {
+
+        @Value("${sdnc.baseUrl}")
+        private String baseUrl;
+        @Value("${sdnc.auth.username}")
+        private String authUsername;
+        @Value("${sdnc.auth.password}")
+        private String authPassword;
+        @Value("${sdnc.topologyId}")
+        public String topologyId;
+    }
+
+    /**
+     * Returns restTemplate bean for the spring context.
+     *
+     * @param restTemplateBuilder   restTemplate builder
+     * @return {@code RestTemplate} rest template
+     */
+    @Bean
+    public RestTemplate restTemplate(final RestTemplateBuilder restTemplateBuilder) {
+        final RestTemplate restTemplate =  restTemplateBuilder.build();
+        setCustomRequestFactoryToSupportPatch(restTemplate);
+        return restTemplate;
+    }
+
+    private void setCustomRequestFactoryToSupportPatch(final RestTemplate restTemplate) {
+        final HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
+        requestFactory.setConnectTimeout(TIMEOUT);
+        restTemplate.setRequestFactory(requestFactory);
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java
new file mode 100644
index 00000000..fb22b358
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java
@@ -0,0 +1,51 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config;
+
+import lombok.Getter;
+import org.springdoc.core.models.GroupedOpenApi;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.stereotype.Component;
+
+
+@Configuration
+public class DmiPluginConfig {
+
+    /**
+     * Swagger-ui configuration using springdoc.
+     */
+    @Bean("dmi-plugin-api")
+    public GroupedOpenApi api() {
+        return GroupedOpenApi.builder().group("dmi-plugin-api")
+                .pathsToMatch("/swagger-ui/**,/swagger-resources/**,/v3/api-docs").build();
+    }
+
+    @Getter
+    @Component
+    public static class DmiPluginProperties {
+
+        @Value("${dmi.service.url}")
+        private String dmiServiceUrl;
+    }
+}
+
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/WebSecurityConfig.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/WebSecurityConfig.java
new file mode 100644
index 00000000..ac92cb4a
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/WebSecurityConfig.java
@@ -0,0 +1,105 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.SecurityFilterChain;
+
+/**
+ * Configuration class to implement application security.
+ * It enforces Basic Authentication access control.
+ */
+@Configuration
+@EnableWebSecurity
+public class WebSecurityConfig {
+
+    private static final String USER_ROLE = "USER";
+
+    private final String username;
+    private final String password;
+    private final String[] permitUris;
+
+    /**
+     * Constructor. Accepts parameters from configuration.
+     *
+     * @param permitUris comma-separated list of uri patterns for endpoints permitted
+     * @param username   username
+     * @param password   password
+     */
+    public WebSecurityConfig(
+        @Autowired @Value("${security.permit-uri}") final String permitUris,
+        @Autowired @Value("${security.auth.username}") final String username,
+        @Autowired @Value("${security.auth.password}") final String password
+    ) {
+        super();
+        this.permitUris = permitUris.isEmpty() ? new String[] {"/v3/api-docs"} : permitUris.split("\\s{0,9},\\s{0,9}");
+        this.username = username;
+        this.password = password;
+    }
+
+    /**
+     * Return the configuration for secure access to the modules REST end points.
+     *
+     * @param http the HTTP security settings.
+     * @return the HTTP security settings.
+     */
+    @Bean
+    // The team decided to disable default CSRF Spring protection and not implement CSRF tokens validation.
+    // ncmp is a stateless REST API that is not as vulnerable to CSRF attacks as web applications running in
+    // web browsers are. ncmp  does not manage sessions, each request requires the authentication token in the header.
+    // See https://docs.spring.io/spring-security/site/docs/5.3.8.RELEASE/reference/html5/#csrf
+    @SuppressWarnings("squid:S4502")
+    public SecurityFilterChain filterChain(final HttpSecurity http) throws Exception {
+        http
+                .httpBasic(httpBasicCustomizer -> {})
+                .authorizeHttpRequests(authorizeHttpRequestsCustomizer -> {
+                    authorizeHttpRequestsCustomizer.requestMatchers(permitUris).permitAll();
+                    authorizeHttpRequestsCustomizer.anyRequest().authenticated();
+                })
+                .csrf(AbstractHttpConfigurer::disable);
+
+        return http.build();
+    }
+
+    /**
+     * In memory user authenticaion details.
+     *
+     * @return in memory authentication.
+     */
+    @Bean
+    public InMemoryUserDetailsManager userDetailsService() {
+        final UserDetails user = User.builder()
+                .username(username)
+                .password("{noop}" + password)
+                .roles(USER_ROLE)
+                .build();
+        return new InMemoryUserDetailsManager(user);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/kafka/KafkaConfig.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/kafka/KafkaConfig.java
new file mode 100644
index 00000000..25ee92ae
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/config/kafka/KafkaConfig.java
@@ -0,0 +1,142 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2023 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config.kafka;
+
+import io.cloudevents.CloudEvent;
+import java.util.Map;
+import lombok.RequiredArgsConstructor;
+import org.apache.kafka.clients.producer.ProducerConfig;
+import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.kafka.annotation.EnableKafka;
+import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
+import org.springframework.kafka.core.ConsumerFactory;
+import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
+import org.springframework.kafka.core.DefaultKafkaProducerFactory;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.kafka.core.ProducerFactory;
+import org.springframework.kafka.support.serializer.JsonDeserializer;
+import org.springframework.kafka.support.serializer.JsonSerializer;
+
+/**
+ * kafka Configuration for legacy and cloud events.
+ *
+ * @param <T> valid legacy event to be published over the wire.
+ */
+@Configuration
+@EnableKafka
+@RequiredArgsConstructor
+public class KafkaConfig<T> {
+
+    private final KafkaProperties kafkaProperties;
+
+    /**
+     * This sets the strategy for creating legacy Kafka producer instance from kafka properties defined into
+     * application.yml and replaces value-serializer by JsonSerializer.
+     *
+     * @return legacy event producer instance.
+     */
+    @Bean
+    public ProducerFactory<String, T> legacyEventProducerFactory() {
+        final Map<String, Object> producerConfigProperties = kafkaProperties.buildProducerProperties();
+        producerConfigProperties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class);
+        return new DefaultKafkaProducerFactory<>(producerConfigProperties);
+    }
+
+    /**
+     * The ConsumerFactory implementation is to produce new legacy instance for provided kafka properties defined
+     * into application.yml and replaces deserializer-value by JsonDeserializer.
+     *
+     * @return an instance of legacy consumer factory.
+     */
+    @Bean
+    public ConsumerFactory<String, T> legacyEventConsumerFactory() {
+        final Map<String, Object> consumerConfigProperties = kafkaProperties.buildConsumerProperties();
+        consumerConfigProperties.put("spring.deserializer.value.delegate.class", JsonDeserializer.class);
+        return new DefaultKafkaConsumerFactory<>(consumerConfigProperties);
+    }
+
+    /**
+     * This sets the strategy for creating cloud Kafka producer instance from kafka properties defined into
+     * application.yml with CloudEventSerializer.
+     *
+     * @return cloud event producer instance.
+     */
+    @Bean
+    public ProducerFactory<String, CloudEvent> cloudEventProducerFactory() {
+        final Map<String, Object> producerConfigProperties = kafkaProperties.buildProducerProperties();
+        return new DefaultKafkaProducerFactory<>(producerConfigProperties);
+    }
+
+    /**
+     * The ConsumerFactory implementation to produce new legacy instance for provided kafka properties defined
+     * into application.yml having CloudEventDeserializer as deserializer-value.
+     *
+     * @return an instance of cloud consumer factory.
+     */
+    @Bean
+    public ConsumerFactory<String, CloudEvent> cloudEventConsumerFactory() {
+        final Map<String, Object> consumerConfigProperties = kafkaProperties.buildConsumerProperties();
+        return new DefaultKafkaConsumerFactory<>(consumerConfigProperties);
+    }
+
+    /**
+     * A legacy Kafka event template for executing high-level operations. The legacy producer factory ensure this.
+     *
+     * @return an instance of legacy Kafka template.
+     */
+    @Bean
+    @Primary
+    public KafkaTemplate<String, T> legacyEventKafkaTemplate() {
+        final KafkaTemplate<String, T> kafkaTemplate = new KafkaTemplate<>(legacyEventProducerFactory());
+        kafkaTemplate.setConsumerFactory(legacyEventConsumerFactory());
+        return kafkaTemplate;
+    }
+
+    /**
+     * A cloud Kafka event template for executing high-level operations. The cloud producer factory ensure this.
+     *
+     * @return an instance of cloud Kafka template.
+     */
+    @Bean
+    public KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate() {
+        final KafkaTemplate<String, CloudEvent> kafkaTemplate = new KafkaTemplate<>(cloudEventProducerFactory());
+        kafkaTemplate.setConsumerFactory(cloudEventConsumerFactory());
+        return kafkaTemplate;
+    }
+
+    /**
+     * A cloud Kafka event template for executing high-level operations. The cloud producer factory ensure this.
+     *
+     * @return an instance of cloud Kafka template.
+     */
+    @Bean
+    public ConcurrentKafkaListenerContainerFactory<String, CloudEvent>
+        cloudEventConcurrentKafkaListenerContainerFactory() {
+        final ConcurrentKafkaListenerContainerFactory<String, CloudEvent> containerFactory =
+            new ConcurrentKafkaListenerContainerFactory<>();
+        containerFactory.setConsumerFactory(cloudEventConsumerFactory());
+        return containerFactory;
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/datajobs/rest/controller/DmiDatajobsRestController.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/datajobs/rest/controller/DmiDatajobsRestController.java
new file mode 100644
index 00000000..bbc1c20d
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/datajobs/rest/controller/DmiDatajobsRestController.java
@@ -0,0 +1,60 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.datajobs.rest.controller;
+
+import org.onap.cps.ncmp.dmi.datajobs.model.SubjobReadRequest;
+import org.onap.cps.ncmp.dmi.datajobs.model.SubjobWriteRequest;
+import org.onap.cps.ncmp.dmi.datajobs.rest.api.DmiDatajobApi;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RequestMapping("${rest.api.dmi-base-path}")
+@RestController
+public class DmiDatajobsRestController implements DmiDatajobApi {
+    /**
+     * * This method is not implemented for ONAP DMI plugin.
+     *
+     * @param requestId Identifier for the overall Datajob (required)
+     * @param subjobReadRequest Operation body (optional)
+     * @return (@ code ResponseEntity) response entity
+     */
+    @Override
+    public ResponseEntity<Void> readDataJob(final String requestId,
+                                              final SubjobReadRequest subjobReadRequest) {
+
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+    }
+
+    /**
+     * * This method is not implemented for ONAP DMI plugin.
+     *
+     * @param requestId Identifier for the overall Datajob (required)
+     * @param subjobWriteRequest Operation body (optional)
+     * @return (@ code ResponseEntity) response entity
+     */
+    @Override
+    public ResponseEntity<Void> writeDataJob(final String requestId,
+                                                               final SubjobWriteRequest subjobWriteRequest) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/CloudEventConstructionException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/CloudEventConstructionException.java
new file mode 100644
index 00000000..f61c156a
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/CloudEventConstructionException.java
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+public class CloudEventConstructionException extends DmiException {
+
+    private static final long serialVersionUID = 7747941311132087621L;
+
+    /**
+     * CloudEventConstructionException.
+     *
+     * @param message the error message
+     * @param details the error details
+     * @param cause   the error cause
+     */
+    public CloudEventConstructionException(final String message, final String details, final Throwable cause) {
+        super(message, details, cause);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java
new file mode 100644
index 00000000..1874389e
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java
@@ -0,0 +1,36 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+public class CmHandleRegistrationException extends DmiException {
+
+    private static final long serialVersionUID = 8973438585188332404L;
+
+    /**
+     * Constructor.
+     *
+     * @param details the error details
+     */
+    public CmHandleRegistrationException(final String details) {
+        super("Not able to register the given cm-handles.", details);
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiException.java
new file mode 100644
index 00000000..c099a1cc
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiException.java
@@ -0,0 +1,59 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+
+package org.onap.cps.ncmp.dmi.exception;
+
+import lombok.Getter;
+
+/**
+ * Dmi exception.
+ */
+public class DmiException extends RuntimeException {
+
+    private static final long serialVersionUID = 1481520410918497487L;
+
+    @Getter
+    final String details;
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param details the error details
+     */
+    public DmiException(final String message, final String details) {
+        super(message);
+        this.details = details;
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param details the error details
+     * @param cause   the cause of the exception
+     */
+    public DmiException(final String message, final String details, final Throwable cause) {
+        super(message, cause);
+        this.details = details;
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java
new file mode 100644
index 00000000..49db7d8b
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java
@@ -0,0 +1,74 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.model.ErrorMessage;
+import org.onap.cps.ncmp.dmi.rest.controller.DmiRestController;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@Slf4j
+@RestControllerAdvice(assignableTypes = {DmiRestController.class})
+public class DmiExceptionHandler {
+
+    private DmiExceptionHandler() {
+    }
+
+    /**
+     * Default exception handler.
+     *
+     * @param exception the exception to handle
+     * @return response with response code 500.
+     */
+    @ExceptionHandler
+    public static ResponseEntity<Object> handleInternalServerErrorExceptions(final Exception exception) {
+        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception);
+    }
+
+    @ExceptionHandler({ModulesNotFoundException.class, ModuleResourceNotFoundException.class})
+    public static ResponseEntity<Object> handleNotFoundExceptions(final DmiException exception) {
+        return buildErrorResponse(HttpStatus.NOT_FOUND, exception);
+    }
+
+    @ExceptionHandler({CmHandleRegistrationException.class, DmiException.class})
+    public static ResponseEntity<Object> handleAnyOtherDmiExceptions(final DmiException exception) {
+        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception);
+    }
+
+    private static ResponseEntity<Object> buildErrorResponse(final HttpStatus httpStatus, final Exception exception) {
+        logForNonDmiException(exception);
+        final var errorMessage = new ErrorMessage();
+        errorMessage.setStatus(httpStatus.toString());
+        errorMessage.setMessage(exception.getMessage());
+        errorMessage.setDetails(exception instanceof DmiException ? ((DmiException) exception).getDetails() :
+                "Check logs for details.");
+        return new ResponseEntity<>(errorMessage, httpStatus);
+    }
+
+    private static void logForNonDmiException(final Exception exception) {
+        if (exception.getCause() != null || !(exception instanceof DmiException)) {
+            log.error("Exception occurred", exception);
+        }
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/HttpClientRequestException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/HttpClientRequestException.java
new file mode 100644
index 00000000..b4b0249f
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/HttpClientRequestException.java
@@ -0,0 +1,44 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+public class HttpClientRequestException extends DmiException {
+
+    private static final long serialVersionUID = 881438585188332404L;
+
+    private final HttpStatus httpStatus;
+
+    /**
+     * Constructor.
+     *
+     * @param cmHandle cmHandle identifier
+     * @param details    response body from the client available as details
+     * @param httpStatus http status from the client
+     */
+    public HttpClientRequestException(final String cmHandle, final String details, final HttpStatus httpStatus) {
+        super("Resource data request failed for CM Handle: " + cmHandle, details);
+        this.httpStatus = httpStatus;
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/InvalidDatastoreException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/InvalidDatastoreException.java
new file mode 100644
index 00000000..aa5b0cb7
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/InvalidDatastoreException.java
@@ -0,0 +1,32 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+public class InvalidDatastoreException extends RuntimeException {
+    /**
+     * Instantiates a new Invalid datastore exception.
+     *
+     * @param message the message
+     */
+    public InvalidDatastoreException(final String message) {
+        super(message);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/ModuleResourceNotFoundException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/ModuleResourceNotFoundException.java
new file mode 100644
index 00000000..65db2712
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/ModuleResourceNotFoundException.java
@@ -0,0 +1,38 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+public class ModuleResourceNotFoundException extends DmiException {
+
+    private static final long serialVersionUID = 4764849097602543408L;
+
+    private static final String ERROR_MESSAGE = "Module resource not found for given cmHandle: ";
+
+    /**
+     * Constructor.
+     *
+     * @param cmHandle the cm handle
+     * @param details the details of the error
+     */
+    public ModuleResourceNotFoundException(final String cmHandle, final String details) {
+        super(ERROR_MESSAGE + cmHandle, details);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/ModulesNotFoundException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/ModulesNotFoundException.java
new file mode 100644
index 00000000..ded54d91
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/ModulesNotFoundException.java
@@ -0,0 +1,38 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+public class ModulesNotFoundException extends DmiException {
+
+    private static final long serialVersionUID = 980438585188332404L;
+
+    private static final String ERROR_MESSAGE = "Not able to register the given cm-handles: ";
+
+    /**
+     * Constructor.
+     *
+     * @param cmHandle cmHandle identifier
+     * @param details the error details
+     */
+    public ModulesNotFoundException(final String cmHandle, final String details) {
+        super(ERROR_MESSAGE + cmHandle, details);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/SdncException.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/SdncException.java
new file mode 100644
index 00000000..a83485a9
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/exception/SdncException.java
@@ -0,0 +1,49 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+import org.springframework.http.HttpStatus;
+
+/*
+Use this exception when SDNC contract fails
+ */
+public class SdncException extends DmiException {
+
+    private static final long serialVersionUID = -2076096996672060566L;
+
+    /**
+     * Constructor.
+     *
+     * @param message      message
+     * @param httpStatus   httpStatus
+     * @param responseBody responseBody
+     */
+    public SdncException(final String message, final HttpStatus httpStatus, final String responseBody) {
+        super(message, String.format("sdnc http status: %s, response body : %s ",
+            httpStatus.toString(),
+            responseBody));
+    }
+
+    public SdncException(final String message, final String details, final Throwable cause) {
+        super(message, details, cause);
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/AsyncTaskExecutor.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/AsyncTaskExecutor.java
new file mode 100644
index 00000000..6a1c6d1d
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/AsyncTaskExecutor.java
@@ -0,0 +1,121 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.async;
+
+import com.google.gson.JsonObject;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Supplier;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.exception.HttpClientRequestException;
+import org.onap.cps.ncmp.dmi.model.DataAccessRequest;
+import org.onap.cps.ncmp.event.model.DmiAsyncRequestResponseEvent;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AsyncTaskExecutor {
+
+    private final DmiAsyncRequestResponseEventProducer dmiAsyncRequestResponseEventProducer;
+
+    private static final DmiAsyncRequestResponseEventCreator dmiAsyncRequestResponseEventCreator =
+        new DmiAsyncRequestResponseEventCreator();
+
+    private static final Map<DataAccessRequest.OperationEnum, HttpStatus> operationToHttpStatusMap = new HashMap<>(6);
+
+    static {
+        operationToHttpStatusMap.put(null, HttpStatus.OK);
+        operationToHttpStatusMap.put(DataAccessRequest.OperationEnum.READ, HttpStatus.OK);
+        operationToHttpStatusMap.put(DataAccessRequest.OperationEnum.CREATE, HttpStatus.CREATED);
+        operationToHttpStatusMap.put(DataAccessRequest.OperationEnum.PATCH, HttpStatus.OK);
+        operationToHttpStatusMap.put(DataAccessRequest.OperationEnum.UPDATE, HttpStatus.OK);
+        operationToHttpStatusMap.put(DataAccessRequest.OperationEnum.DELETE, HttpStatus.NO_CONTENT);
+    }
+
+    /**
+     * Execute task asynchronously and publish response to supplied topic.
+     *
+     * @param taskSupplier          functional method is get() task need to executed asynchronously
+     * @param topicName             topic name where message need to be published
+     * @param requestId             unique requestId for async request
+     * @param operation             the operation performed
+     * @param timeOutInMilliSeconds task timeout in milliseconds
+     */
+    public void executeAsyncTask(final Supplier<String> taskSupplier,
+                                 final String topicName,
+                                 final String requestId,
+                                 final DataAccessRequest.OperationEnum operation,
+                                 final int timeOutInMilliSeconds) {
+        CompletableFuture.supplyAsync(taskSupplier::get)
+            .orTimeout(timeOutInMilliSeconds, TimeUnit.MILLISECONDS)
+            .whenCompleteAsync((resourceDataAsJson, throwable) -> {
+                if (throwable == null) {
+                    final String status = operationToHttpStatusMap.get(operation).getReasonPhrase();
+                    final String code = String.valueOf(operationToHttpStatusMap.get(operation).value());
+                    publishAsyncEvent(topicName, requestId, resourceDataAsJson, status, code);
+                } else {
+                    log.error("Error occurred with async request {}", throwable.getMessage());
+                    publishAsyncFailureEvent(topicName, requestId, throwable);
+                }
+            });
+        log.info("Async task completed.");
+    }
+
+    private void publishAsyncEvent(final String topicName,
+                                   final String requestId,
+                                   final String resourceDataAsJson,
+                                   final String status,
+                                   final String code) {
+        final DmiAsyncRequestResponseEvent cpsAsyncRequestResponseEvent =
+            dmiAsyncRequestResponseEventCreator.createEvent(resourceDataAsJson, topicName, requestId, status, code);
+
+        dmiAsyncRequestResponseEventProducer.sendMessage(requestId, cpsAsyncRequestResponseEvent);
+    }
+
+    private void publishAsyncFailureEvent(final String topicName,
+                                            final String requestId,
+                                            final Throwable throwable) {
+        HttpStatus httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
+
+        if (throwable instanceof HttpClientRequestException) {
+            final HttpClientRequestException httpClientRequestException = (HttpClientRequestException) throwable;
+            httpStatus = httpClientRequestException.getHttpStatus();
+        }
+
+        final JsonObject errorDetails = new JsonObject();
+        errorDetails.addProperty("errorDetails", throwable.getMessage());
+        publishAsyncEvent(
+            topicName,
+            requestId,
+            errorDetails.toString(),
+            httpStatus.getReasonPhrase(),
+            String.valueOf(httpStatus.value())
+        );
+    }
+}
+
+
+
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/DmiAsyncRequestResponseEventCreator.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/DmiAsyncRequestResponseEventCreator.java
new file mode 100644
index 00000000..1e6c84b1
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/DmiAsyncRequestResponseEventCreator.java
@@ -0,0 +1,90 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2022 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.async;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.UUID;
+import lombok.SneakyThrows;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.Application;
+import org.onap.cps.ncmp.event.model.DmiAsyncRequestResponseEvent;
+import org.onap.cps.ncmp.event.model.EventContent;
+
+/**
+ * Helper to create DmiAsyncRequestResponseEvent.
+ */
+@Slf4j
+public class DmiAsyncRequestResponseEventCreator {
+
+    private static final DateTimeFormatter dateTimeFormatter
+        = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
+
+    private final ObjectMapper objectMapper = new ObjectMapper();
+
+    /**
+     * Create an event.
+     *
+     * @param resourceDataAsJson the resource data as json
+     * @param topicParamInQuery the topic to send response to
+     * @param requestId the request id
+     * @param status the status of the request
+     * @param code the code of the response
+     *
+     * @return DmiAsyncRequestResponseEvent
+     */
+    public DmiAsyncRequestResponseEvent createEvent(final String resourceDataAsJson,
+                                                    final String topicParamInQuery,
+                                                    final String requestId,
+                                                    final String status,
+                                                    final String code) {
+        final DmiAsyncRequestResponseEvent dmiAsyncRequestResponseEvent = new DmiAsyncRequestResponseEvent();
+
+        dmiAsyncRequestResponseEvent.setEventId(UUID.randomUUID().toString());
+        dmiAsyncRequestResponseEvent.setEventCorrelationId(requestId);
+        dmiAsyncRequestResponseEvent.setEventType(DmiAsyncRequestResponseEvent.class.getName());
+        dmiAsyncRequestResponseEvent.setEventSchema("urn:cps:" + DmiAsyncRequestResponseEvent.class.getName());
+        dmiAsyncRequestResponseEvent.setEventSchemaVersion("v1");
+        dmiAsyncRequestResponseEvent.setEventSource(Application.class.getPackageName());
+        dmiAsyncRequestResponseEvent.setEventTarget(topicParamInQuery);
+        dmiAsyncRequestResponseEvent.setEventTime(ZonedDateTime.now().format(dateTimeFormatter));
+        dmiAsyncRequestResponseEvent.setEventContent(getEventContent(resourceDataAsJson, status, code));
+
+        return dmiAsyncRequestResponseEvent;
+    }
+
+    @SneakyThrows
+    private EventContent getEventContent(final String resourceDataAsJson, final String status, final String code) {
+        final EventContent eventContent = new EventContent();
+
+        eventContent.setResponseDataSchema("urn:cps:" + DmiAsyncRequestResponseEvent.class.getName() + ":v1");
+        eventContent.setResponseStatus(status);
+        eventContent.setResponseCode(code);
+
+        eventContent.setAdditionalProperty("response-data",
+            objectMapper.readValue(resourceDataAsJson, HashMap.class));
+
+        return eventContent;
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/DmiAsyncRequestResponseEventProducer.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/DmiAsyncRequestResponseEventProducer.java
new file mode 100644
index 00000000..00fea330
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/async/DmiAsyncRequestResponseEventProducer.java
@@ -0,0 +1,47 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2022 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.async;
+
+import lombok.RequiredArgsConstructor;
+import org.onap.cps.ncmp.event.model.DmiAsyncRequestResponseEvent;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class DmiAsyncRequestResponseEventProducer {
+
+    private final KafkaTemplate<String, DmiAsyncRequestResponseEvent> kafkaTemplate;
+
+    @Value("${app.ncmp.async.topic}")
+    private String dmiNcmpTopic;
+
+    /**
+     * Sends message to the configured topic with a message key.
+     *
+     * @param requestId the request id
+     * @param dmiAsyncRequestResponseEvent the event to publish
+     */
+    public void sendMessage(final String requestId, final DmiAsyncRequestResponseEvent dmiAsyncRequestResponseEvent) {
+        kafkaTemplate.send(dmiNcmpTopic, requestId, dmiAsyncRequestResponseEvent);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcCloudEventCreator.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcCloudEventCreator.java
new file mode 100644
index 00000000..b8bd277d
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcCloudEventCreator.java
@@ -0,0 +1,104 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2023 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.avc;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.cloudevents.CloudEvent;
+import io.cloudevents.core.builder.CloudEventBuilder;
+import java.net.URI;
+import java.time.format.DateTimeFormatter;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.events.avc1_0_0.AvcEvent;
+import org.onap.cps.ncmp.events.avc1_0_0.Data;
+import org.onap.cps.ncmp.events.avc1_0_0.DatastoreChanges;
+import org.onap.cps.ncmp.events.avc1_0_0.Edit;
+import org.onap.cps.ncmp.events.avc1_0_0.IetfYangPatchYangPatch;
+import org.onap.cps.ncmp.events.avc1_0_0.PushChangeUpdate;
+import org.onap.cps.ncmp.events.avc1_0_0.Value;
+
+/**
+ * Helper to create AvcEvents.
+ */
+@Slf4j
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class DmiDataAvcCloudEventCreator {
+
+    private static final DateTimeFormatter dateTimeFormatter =
+            DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
+
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    /**
+     * Creates CloudEvent for DMI Data AVC.
+     *
+     * @param eventCorrelationId correlationid
+     * @return Cloud Event
+     */
+    public static CloudEvent createCloudEvent(final String eventCorrelationId) {
+
+        CloudEvent cloudEvent = null;
+
+        try {
+            cloudEvent = CloudEventBuilder.v1().withId(UUID.randomUUID().toString()).withSource(URI.create("NCMP"))
+                    .withType(AvcEvent.class.getName())
+                    .withDataSchema(URI.create("urn:cps:" + AvcEvent.class.getName() + ":1.0.0"))
+                    .withExtension("correlationid", eventCorrelationId)
+                    .withData(objectMapper.writeValueAsBytes(createDmiDataAvcEvent())).build();
+        } catch (final JsonProcessingException jsonProcessingException) {
+            log.error("Unable to convert object to json : {}", jsonProcessingException.getMessage());
+        }
+
+        return cloudEvent;
+    }
+
+    private static AvcEvent createDmiDataAvcEvent() {
+        final AvcEvent avcEvent = new AvcEvent();
+        final Data data = new Data();
+        final PushChangeUpdate pushChangeUpdate = new PushChangeUpdate();
+        final DatastoreChanges datastoreChanges = new DatastoreChanges();
+        final IetfYangPatchYangPatch ietfYangPatchYangPatch = new IetfYangPatchYangPatch();
+        ietfYangPatchYangPatch.setPatchId("abcd");
+        final Edit edit1 = new Edit();
+        final Value value = new Value();
+        final Map<String, Object> attributeMap = new LinkedHashMap<>();
+        attributeMap.put("isHoAllowed", false);
+        value.setAttributes(List.of(attributeMap));
+        edit1.setEditId("editId");
+        edit1.setOperation("replace");
+        edit1.setTarget("target_xpath");
+        edit1.setValue(value);
+        ietfYangPatchYangPatch.setEdit(List.of(edit1));
+        datastoreChanges.setIetfYangPatchYangPatch(ietfYangPatchYangPatch);
+        pushChangeUpdate.setDatastoreChanges(datastoreChanges);
+        data.setPushChangeUpdate(pushChangeUpdate);
+
+        avcEvent.setData(data);
+        return avcEvent;
+    }
+
+}
\ No newline at end of file
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcEventProducer.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcEventProducer.java
new file mode 100644
index 00000000..075dcf20
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcEventProducer.java
@@ -0,0 +1,50 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2023 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.avc;
+
+
+import io.cloudevents.CloudEvent;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.clients.producer.ProducerRecord;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.stereotype.Service;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class DmiDataAvcEventProducer {
+
+    private final KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate;
+    
+    /**
+     * Publishing DMI Data AVC event payload as CloudEvent.
+     *
+     * @param requestId     the request id
+     * @param cloudAvcEvent event with data as DMI DataAVC event
+     */
+    public void publishDmiDataAvcCloudEvent(final String requestId, final CloudEvent cloudAvcEvent) {
+        final ProducerRecord<String, CloudEvent> producerRecord =
+                new ProducerRecord<>("dmi-cm-events", requestId, cloudAvcEvent);
+        cloudEventKafkaTemplate.send(producerRecord);
+        log.debug("AVC event sent");
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcEventSimulationController.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcEventSimulationController.java
new file mode 100644
index 00000000..c5fb8fbe
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/avc/DmiDataAvcEventSimulationController.java
@@ -0,0 +1,61 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.avc;
+
+import io.cloudevents.CloudEvent;
+import java.util.UUID;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RequestMapping("${rest.api.dmi-base-path}")
+@RestController
+@Slf4j
+@RequiredArgsConstructor
+public class DmiDataAvcEventSimulationController {
+
+    private final DmiDataAvcEventProducer dmiDataAvcEventProducer;
+
+    /**
+     * Simulate Event for AVC.
+     *
+     * @param numberOfSimulatedEvents number of events to be generated
+     * @return ResponseEntity
+     */
+    @GetMapping(path = "/v1/simulateDmiDataEvent")
+    public ResponseEntity<Void> simulateEvents(
+            @RequestParam("numberOfSimulatedEvents") final Integer numberOfSimulatedEvents) {
+
+        for (int i = 0; i < numberOfSimulatedEvents; i++) {
+            final String eventCorrelationId = UUID.randomUUID().toString();
+            final CloudEvent cloudEvent = DmiDataAvcCloudEventCreator.createCloudEvent(eventCorrelationId);
+            dmiDataAvcEventProducer.publishDmiDataAvcCloudEvent(eventCorrelationId, cloudEvent);
+        }
+
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiInEventConsumer.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiInEventConsumer.java
new file mode 100644
index 00000000..3a9838b0
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiInEventConsumer.java
@@ -0,0 +1,108 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.cmsubscription;
+
+import io.cloudevents.CloudEvent;
+import lombok.RequiredArgsConstructor;
+import org.apache.kafka.clients.consumer.ConsumerRecord;
+import org.onap.cps.ncmp.dmi.notifications.cmsubscription.model.CmNotificationSubscriptionStatus;
+import org.onap.cps.ncmp.dmi.notifications.mapper.CloudEventMapper;
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.CmNotificationSubscriptionDmiOutEvent;
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.Data;
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.ncmp_to_dmi.CmNotificationSubscriptionDmiInEvent;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.kafka.annotation.KafkaListener;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class CmNotificationSubscriptionDmiInEventConsumer {
+
+
+    @Value("${app.dmi.avc.cm-subscription-dmi-out}")
+    private String cmNotificationSubscriptionDmiOutTopic;
+    @Value("${dmi.service.name}")
+    private String dmiName;
+    private final KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate;
+
+    /**
+     * Consume the cmNotificationSubscriptionDmiInCloudEvent event.
+     *
+     * @param cmNotificationSubscriptionDmiInCloudEvent the event to be consumed
+     */
+    @KafkaListener(topics = "${app.dmi.avc.cm-subscription-dmi-in}",
+        containerFactory = "cloudEventConcurrentKafkaListenerContainerFactory")
+    public void consumeCmNotificationSubscriptionDmiInEvent(
+        final ConsumerRecord<String, CloudEvent> cmNotificationSubscriptionDmiInCloudEvent) {
+        final CmNotificationSubscriptionDmiInEvent cmNotificationSubscriptionDmiInEvent =
+            CloudEventMapper.toTargetEvent(cmNotificationSubscriptionDmiInCloudEvent.value(),
+                CmNotificationSubscriptionDmiInEvent.class);
+        if (cmNotificationSubscriptionDmiInEvent != null) {
+            final String subscriptionId = cmNotificationSubscriptionDmiInCloudEvent.value().getId();
+            final String subscriptionType = cmNotificationSubscriptionDmiInCloudEvent.value().getType();
+            final String correlationId = String.valueOf(cmNotificationSubscriptionDmiInCloudEvent.value()
+                .getExtension("correlationid"));
+
+            if ("subscriptionCreateRequest".equals(subscriptionType)) {
+                createAndSendCmNotificationSubscriptionDmiOutEvent(subscriptionId, "subscriptionCreateResponse",
+                    correlationId, CmNotificationSubscriptionStatus.ACCEPTED);
+            } else if ("subscriptionDeleteRequest".equals(subscriptionType)) {
+                createAndSendCmNotificationSubscriptionDmiOutEvent(subscriptionId, "subscriptionDeleteResponse",
+                    correlationId, CmNotificationSubscriptionStatus.ACCEPTED);
+            }
+        }
+    }
+
+    /**
+     * Create Dmi out event object and send to response topic.
+     *
+     * @param eventKey the events key
+     * @param subscriptionType the subscriptions type
+     * @param correlationId the events correlation Id
+     * @param cmNotificationSubscriptionStatus subscriptions status accepted/rejected
+     */
+    public void createAndSendCmNotificationSubscriptionDmiOutEvent(
+        final String eventKey, final String subscriptionType, final String correlationId,
+        final CmNotificationSubscriptionStatus cmNotificationSubscriptionStatus) {
+
+        final CmNotificationSubscriptionDmiOutEvent cmNotificationSubscriptionDmiOutEvent =
+            new CmNotificationSubscriptionDmiOutEvent();
+        final Data cmNotificationSubscriptionDmiOutEventData = new Data();
+
+        if (cmNotificationSubscriptionStatus.equals(CmNotificationSubscriptionStatus.ACCEPTED)) {
+            cmNotificationSubscriptionDmiOutEventData.setStatusCode("1");
+            cmNotificationSubscriptionDmiOutEventData.setStatusMessage("ACCEPTED");
+        } else {
+            cmNotificationSubscriptionDmiOutEventData.setStatusCode("104");
+            cmNotificationSubscriptionDmiOutEventData.setStatusMessage("REJECTED");
+        }
+        cmNotificationSubscriptionDmiOutEvent.setData(cmNotificationSubscriptionDmiOutEventData);
+
+        cloudEventKafkaTemplate.send(cmNotificationSubscriptionDmiOutTopic, eventKey,
+            CmNotificationSubscriptionDmiOutEventToCloudEventMapper.toCloudEvent(cmNotificationSubscriptionDmiOutEvent,
+                subscriptionType, dmiName, correlationId));
+
+    }
+
+
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiOutEventToCloudEventMapper.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiOutEventToCloudEventMapper.java
new file mode 100644
index 00000000..51205da2
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiOutEventToCloudEventMapper.java
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.cmsubscription;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.cloudevents.CloudEvent;
+import io.cloudevents.core.builder.CloudEventBuilder;
+import java.net.URI;
+import java.util.UUID;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import org.onap.cps.ncmp.dmi.exception.CloudEventConstructionException;
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.CmNotificationSubscriptionDmiOutEvent;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class CmNotificationSubscriptionDmiOutEventToCloudEventMapper {
+
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    /**
+     * Maps SubscriptionEventResponse to a CloudEvent.
+     *
+     * @param cmSubscriptionDmiOutEvent object.
+     * @param subscriptionType          String of subscription type.
+     * @param dmiName                   String of dmiName.
+     * @param correlationId             String of correlationId.
+     * @return CloudEvent built.
+     */
+    public static CloudEvent toCloudEvent(final CmNotificationSubscriptionDmiOutEvent cmSubscriptionDmiOutEvent,
+                                          final String subscriptionType, final String dmiName,
+                                          final String correlationId) {
+        try {
+            return CloudEventBuilder.v1().withId(UUID.randomUUID().toString()).withSource(URI.create(dmiName))
+                .withType(subscriptionType)
+                .withDataSchema(URI.create("urn:cps:org.onap.ncmp.dmi.cm.subscription:1.0.0"))
+                .withExtension("correlationid", correlationId)
+                .withData(objectMapper.writeValueAsBytes(cmSubscriptionDmiOutEvent)).build();
+        } catch (final Exception ex) {
+            throw new CloudEventConstructionException("The Cloud Event could not be constructed",
+                "Invalid object passed", ex);
+        }
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/model/CmNotificationSubscriptionStatus.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/model/CmNotificationSubscriptionStatus.java
new file mode 100644
index 00000000..40b1297f
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/cmsubscription/model/CmNotificationSubscriptionStatus.java
@@ -0,0 +1,32 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.cmsubscription.model;
+
+public enum CmNotificationSubscriptionStatus {
+
+    ACCEPTED("ACCEPTED"), REJECTED("REJECTED");
+
+    private final String cmNotificationSubscriptionStatusValue;
+
+    CmNotificationSubscriptionStatus(final String cmNotificationSubscriptionStatusValue) {
+        this.cmNotificationSubscriptionStatusValue = cmNotificationSubscriptionStatusValue;
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/mapper/CloudEventMapper.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/mapper/CloudEventMapper.java
new file mode 100644
index 00000000..8f196cfc
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/notifications/mapper/CloudEventMapper.java
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (c) 2024 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.mapper;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.cloudevents.CloudEvent;
+import io.cloudevents.core.CloudEventUtils;
+import io.cloudevents.core.data.PojoCloudEventData;
+import io.cloudevents.jackson.PojoCloudEventDataMapper;
+import io.cloudevents.rw.CloudEventRWException;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class CloudEventMapper {
+
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    /**
+     * Generic method to map cloud event data to target event class object.
+     *
+     * @param cloudEvent       input cloud event
+     * @param targetEventClass target event class
+     * @param <T>              target event class type
+     * @return mapped target event
+     */
+    public static <T> T toTargetEvent(final CloudEvent cloudEvent, final Class<T> targetEventClass) {
+        PojoCloudEventData<T> mappedCloudEvent = null;
+
+        try {
+            mappedCloudEvent =
+                CloudEventUtils.mapData(cloudEvent, PojoCloudEventDataMapper.from(objectMapper, targetEventClass));
+
+        } catch (final CloudEventRWException cloudEventRwException) {
+            log.error("Unable to map cloud event to target event class type : {} with cause : {}", targetEventClass,
+                cloudEventRwException.getMessage());
+        }
+
+        return mappedCloudEvent == null ? null : mappedCloudEvent.getValue();
+    }
+
+}
\ No newline at end of file
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java
new file mode 100644
index 00000000..cad5e726
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java
@@ -0,0 +1,253 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  Modifications Copyright (C) 2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.rest.controller;
+
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.model.CmHandles;
+import org.onap.cps.ncmp.dmi.model.DataAccessRequest;
+import org.onap.cps.ncmp.dmi.model.ModuleReferencesRequest;
+import org.onap.cps.ncmp.dmi.model.ModuleResourcesReadRequest;
+import org.onap.cps.ncmp.dmi.model.ModuleSet;
+import org.onap.cps.ncmp.dmi.model.ResourceDataOperationRequests;
+import org.onap.cps.ncmp.dmi.model.YangResources;
+import org.onap.cps.ncmp.dmi.notifications.async.AsyncTaskExecutor;
+import org.onap.cps.ncmp.dmi.rest.api.DmiPluginApi;
+import org.onap.cps.ncmp.dmi.rest.api.DmiPluginInternalApi;
+import org.onap.cps.ncmp.dmi.rest.controller.handlers.DatastoreType;
+import org.onap.cps.ncmp.dmi.service.DmiService;
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RequestMapping("${rest.api.dmi-base-path}")
+@RestController
+@Slf4j
+@RequiredArgsConstructor
+public class DmiRestController implements DmiPluginApi, DmiPluginInternalApi {
+
+    private final DmiService dmiService;
+    private final ObjectMapper objectMapper;
+    private final AsyncTaskExecutor asyncTaskExecutor;
+    private static final Map<OperationEnum, HttpStatus> operationToHttpStatusMap = new HashMap<>(6);
+
+    @Value("${notification.async.executor.time-out-value-in-ms:2000}")
+    private int timeOutInMillis;
+
+    static {
+        operationToHttpStatusMap.put(null, HttpStatus.OK);
+        operationToHttpStatusMap.put(OperationEnum.READ, HttpStatus.OK);
+        operationToHttpStatusMap.put(OperationEnum.CREATE, HttpStatus.CREATED);
+        operationToHttpStatusMap.put(OperationEnum.PATCH, HttpStatus.OK);
+        operationToHttpStatusMap.put(OperationEnum.UPDATE, HttpStatus.OK);
+        operationToHttpStatusMap.put(OperationEnum.DELETE, HttpStatus.NO_CONTENT);
+    }
+
+    @Override
+    public ResponseEntity<ModuleSet> getModuleReferences(final String cmHandle,
+                                                         final ModuleReferencesRequest body) {
+        // For onap-dmi-plugin we don't need cmHandleProperties, so DataAccessReadRequest is not used.
+        final ModuleSet moduleSet = dmiService.getModulesForCmHandle(cmHandle);
+        return ResponseEntity.ok(moduleSet);
+    }
+
+    @Override
+    public ResponseEntity<YangResources> retrieveModuleResources(
+        final String cmHandle,
+        final ModuleResourcesReadRequest moduleResourcesReadRequest) {
+        final List<ModuleReference> moduleReferences = convertRestObjectToJavaApiObject(moduleResourcesReadRequest);
+        final YangResources yangResources = dmiService.getModuleResources(cmHandle, moduleReferences);
+        log.info("Module set tag received: {}", moduleResourcesReadRequest.getModuleSetTag());
+        return new ResponseEntity<>(yangResources, HttpStatus.OK);
+    }
+
+    /**
+     * This method register given list of cm-handles to ncmp.
+     *
+     * @param cmHandles list of cm-handles
+     * @return (@ code ResponseEntity) response entity
+     */
+    public ResponseEntity<String> registerCmHandles(final CmHandles cmHandles) {
+        final List<String> cmHandlesList = cmHandles.getCmHandles();
+        if (cmHandlesList.isEmpty()) {
+            return new ResponseEntity<>("Need at least one cmHandle to process.", HttpStatus.BAD_REQUEST);
+        }
+        dmiService.registerCmHandles(cmHandlesList);
+        return new ResponseEntity<>("cm-handle registered successfully.", HttpStatus.CREATED);
+    }
+
+    /**
+     * This method is not implemented for ONAP DMI plugin.
+     *
+     * @param topic                   client given topic name
+     * @param requestId               requestId generated by NCMP as an ack for client
+     * @param resourceDataOperationRequests   list of operation details
+     * @return (@ code ResponseEntity) response entity
+     */
+    @Override
+    public ResponseEntity<Void> getResourceDataForCmHandleDataOperation(final String topic, final String requestId,
+                                final ResourceDataOperationRequests resourceDataOperationRequests) {
+        log.info("Request Details (for testing purposes)");
+        log.info("Request Id: {}", requestId);
+        log.info("Topic: {}", topic);
+
+        log.info("Details of the first Operation");
+        log.info("Resource Identifier: {}", resourceDataOperationRequests.get(0).getResourceIdentifier());
+        log.info("Module Set Tag: {}", resourceDataOperationRequests.get(0).getCmHandles().get(0).getModuleSetTag());
+        log.info("Operation Id: {}", resourceDataOperationRequests.get(0).getOperationId());
+        log.info("Cm Handles: {}", resourceDataOperationRequests.get(0).getCmHandles());
+        log.info("Options: {}", resourceDataOperationRequests.get(0).getOptions());
+
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+    }
+
+    /**
+     * This method fetches the resource for given cm handle using pass through operational or running datastore.
+     * It filters the response on the basis of options query parameters and returns response. Passthrough Running
+     * supports both read and write operation whereas passthrough operational does not support write operations.
+     *
+     * @param datastoreName         name of the datastore
+     * @param cmHandle              cm handle identifier
+     * @param resourceIdentifier    resource identifier to fetch data
+     * @param optionsParamInQuery   options query parameter
+     * @param topicParamInQuery     topic name for (triggering) async responses
+     * @param dataAccessRequest     data Access Request
+     * @return {@code ResponseEntity} response entity
+     */
+    @Override
+    public ResponseEntity<Object> dataAccessPassthrough(final String datastoreName,
+                                                        final String cmHandle,
+                                                        final String resourceIdentifier,
+                                                        final String optionsParamInQuery,
+                                                        final String topicParamInQuery,
+                                                        final DataAccessRequest dataAccessRequest) {
+        log.info("Module set tag: {}", dataAccessRequest.getModuleSetTag());
+        if (DatastoreType.PASSTHROUGH_OPERATIONAL == DatastoreType.fromDatastoreName(datastoreName)) {
+            return dataAccessPassthroughOperational(resourceIdentifier, cmHandle, dataAccessRequest,
+                    optionsParamInQuery, topicParamInQuery);
+        }
+        return dataAccessPassthroughRunning(resourceIdentifier, cmHandle, dataAccessRequest,
+                optionsParamInQuery, topicParamInQuery);
+    }
+
+    private ResponseEntity<Object> dataAccessPassthroughOperational(final String resourceIdentifier,
+                                                                   final String cmHandle,
+                                                                   final DataAccessRequest dataAccessRequest,
+                                                                   final String optionsParamInQuery,
+                                                                   final String topicParamInQuery) {
+        if (isReadOperation(dataAccessRequest)) {
+            if (hasTopic(topicParamInQuery)) {
+                return handleAsyncRequest(resourceIdentifier, cmHandle, dataAccessRequest, optionsParamInQuery,
+                    topicParamInQuery);
+            }
+
+            final String resourceDataAsJson = dmiService.getResourceData(cmHandle, resourceIdentifier,
+                optionsParamInQuery, DmiService.RESTCONF_CONTENT_PASSTHROUGH_OPERATIONAL_QUERY_PARAM);
+            return ResponseEntity.ok(resourceDataAsJson);
+        }
+        return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+    }
+
+    private ResponseEntity<Object> dataAccessPassthroughRunning(final String resourceIdentifier,
+                                                               final String cmHandle,
+                                                               final DataAccessRequest dataAccessRequest,
+                                                               final String optionsParamInQuery,
+                                                               final String topicParamInQuery) {
+        if (hasTopic(topicParamInQuery)) {
+            asyncTaskExecutor.executeAsyncTask(() ->
+                    getSdncResponseForPassThroughRunning(
+                        resourceIdentifier,
+                        cmHandle,
+                        dataAccessRequest,
+                        optionsParamInQuery),
+                topicParamInQuery,
+                dataAccessRequest.getRequestId(),
+                dataAccessRequest.getOperation(),
+                timeOutInMillis
+            );
+            return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+        }
+
+        final String sdncResponse =
+            getSdncResponseForPassThroughRunning(resourceIdentifier, cmHandle, dataAccessRequest, optionsParamInQuery);
+        return new ResponseEntity<>(sdncResponse, operationToHttpStatusMap.get(dataAccessRequest.getOperation()));
+    }
+
+    private String getSdncResponseForPassThroughRunning(final String resourceIdentifier,
+                                                        final String cmHandle,
+                                                        final DataAccessRequest dataAccessRequest,
+                                                        final String optionsParamInQuery) {
+        if (isReadOperation(dataAccessRequest)) {
+            return dmiService.getResourceData(cmHandle, resourceIdentifier, optionsParamInQuery,
+                DmiService.RESTCONF_CONTENT_PASSTHROUGH_RUNNING_QUERY_PARAM);
+        }
+
+        return dmiService.writeData(dataAccessRequest.getOperation(), cmHandle, resourceIdentifier,
+            dataAccessRequest.getDataType(), dataAccessRequest.getData());
+    }
+
+    private boolean isReadOperation(final DataAccessRequest dataAccessRequest) {
+        return dataAccessRequest.getOperation() == null
+            || dataAccessRequest.getOperation().equals(DataAccessRequest.OperationEnum.READ);
+    }
+
+    private List<ModuleReference> convertRestObjectToJavaApiObject(
+        final ModuleResourcesReadRequest moduleResourcesReadRequest) {
+        return objectMapper
+            .convertValue(moduleResourcesReadRequest.getData().getModules(),
+                new TypeReference<List<ModuleReference>>() {});
+    }
+
+    private boolean hasTopic(final String topicParamInQuery) {
+        return !(topicParamInQuery == null || topicParamInQuery.isBlank());
+    }
+
+    private ResponseEntity<Object> handleAsyncRequest(final String resourceIdentifier,
+                                                      final String cmHandle,
+                                                      final DataAccessRequest dataAccessRequest,
+                                                      final String optionsParamInQuery,
+                                                      final String topicParamInQuery) {
+        asyncTaskExecutor.executeAsyncTask(() ->
+                dmiService.getResourceData(
+                    cmHandle,
+                    resourceIdentifier,
+                    optionsParamInQuery,
+                    DmiService.RESTCONF_CONTENT_PASSTHROUGH_OPERATIONAL_QUERY_PARAM),
+            topicParamInQuery,
+            dataAccessRequest.getRequestId(),
+            dataAccessRequest.getOperation(),
+            timeOutInMillis
+        );
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/handlers/DatastoreType.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/handlers/DatastoreType.java
new file mode 100644
index 00000000..3f280403
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/handlers/DatastoreType.java
@@ -0,0 +1,65 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.rest.controller.handlers;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import lombok.Getter;
+import org.onap.cps.ncmp.dmi.exception.InvalidDatastoreException;
+
+@Getter
+public enum DatastoreType {
+
+    PASSTHROUGH_RUNNING("ncmp-datastore:passthrough-running"),
+    PASSTHROUGH_OPERATIONAL("ncmp-datastore:passthrough-operational");
+
+    DatastoreType(final String datastoreName) {
+        this.datastoreName = datastoreName;
+    }
+
+    private final String datastoreName;
+    private static final Map<String, DatastoreType> datastoreNameToDatastoreType = new HashMap<>();
+
+    static {
+        Arrays.stream(DatastoreType.values()).forEach(
+                type -> datastoreNameToDatastoreType.put(type.getDatastoreName(), type));
+    }
+
+    /**
+     * From datastore name get datastore type.
+     *
+     * @param datastoreName the datastore name
+     * @return the datastore type
+     */
+    public static DatastoreType fromDatastoreName(final String datastoreName) {
+
+        final DatastoreType datastoreType = datastoreNameToDatastoreType.get(datastoreName);
+
+        if (null == datastoreType) {
+            throw new InvalidDatastoreException(datastoreName + " is an invalid datastore name");
+        }
+
+        return datastoreType;
+    }
+
+}
+
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java
new file mode 100644
index 00000000..f0826a81
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java
@@ -0,0 +1,95 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  Modifications Copyright (C) 2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service;
+
+import jakarta.validation.constraints.NotNull;
+import java.util.List;
+import org.onap.cps.ncmp.dmi.exception.DmiException;
+import org.onap.cps.ncmp.dmi.model.DataAccessRequest;
+import org.onap.cps.ncmp.dmi.model.ModuleSet;
+import org.onap.cps.ncmp.dmi.model.YangResources;
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference;
+
+
+
+/**
+ * Interface for handling Dmi plugin Data.
+ */
+public interface DmiService {
+
+    String RESTCONF_CONTENT_PASSTHROUGH_OPERATIONAL_QUERY_PARAM = "content=all";
+    String RESTCONF_CONTENT_PASSTHROUGH_RUNNING_QUERY_PARAM = "content=config";
+
+    /**
+     * This method fetches all modules for given Cm Handle.
+     *
+     * @param cmHandle cm-handle to fetch the modules information
+     * @return {@code String} returns all modules
+     * @throws DmiException can throw dmi exception
+     */
+    ModuleSet getModulesForCmHandle(String cmHandle) throws DmiException;
+
+    /**
+     * This method used to register the given {@code CmHandles} which contains list of {@code CmHandle} to cps
+     * repository.
+     *
+     * @param cmHandles list of cm-handles
+     */
+    void registerCmHandles(List<String> cmHandles);
+
+    /**
+     * Get module resources for the given cm handle and modules.
+     *
+     * @param cmHandle cmHandle
+     * @param modules  a list of module data
+     * @return returns all yang resources
+     */
+    YangResources getModuleResources(String cmHandle, List<ModuleReference> modules);
+
+    /**
+     * This method use to fetch the resource data from cm handle for the given datastore and resource
+     * Identifier. Options query parameter are used to filter the response from network resource.
+     *
+     * @param cmHandle                  cm handle identifier
+     * @param resourceIdentifier        resource identifier
+     * @param optionsParamInQuery       options query parameter
+     * @param restconfContentQueryParam restconf content i.e. datastore to use
+     * @return {@code Object} response from network function
+     */
+    String getResourceData(@NotNull String cmHandle,
+        @NotNull String resourceIdentifier,
+        String optionsParamInQuery,
+        String restconfContentQueryParam);
+
+    /**
+     * Write resource data to sdnc (will default to 'content=config', does not need to be specified).
+     *
+     * @param cmHandle           cmHandle
+     * @param resourceIdentifier resource identifier
+     * @param dataType           accept header parameter
+     * @param data               request data
+     * @return response from sdnc
+     */
+    String writeData(DataAccessRequest.OperationEnum operation, String cmHandle,
+                     String resourceIdentifier, String dataType,
+                     String data);
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java
new file mode 100644
index 00000000..6acbe09b
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java
@@ -0,0 +1,196 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectWriter;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.config.DmiPluginConfig.DmiPluginProperties;
+import org.onap.cps.ncmp.dmi.exception.CmHandleRegistrationException;
+import org.onap.cps.ncmp.dmi.exception.DmiException;
+import org.onap.cps.ncmp.dmi.exception.HttpClientRequestException;
+import org.onap.cps.ncmp.dmi.exception.ModuleResourceNotFoundException;
+import org.onap.cps.ncmp.dmi.exception.ModulesNotFoundException;
+import org.onap.cps.ncmp.dmi.model.DataAccessRequest;
+import org.onap.cps.ncmp.dmi.model.ModuleSet;
+import org.onap.cps.ncmp.dmi.model.ModuleSetSchemasInner;
+import org.onap.cps.ncmp.dmi.model.YangResource;
+import org.onap.cps.ncmp.dmi.model.YangResources;
+import org.onap.cps.ncmp.dmi.service.client.NcmpRestClient;
+import org.onap.cps.ncmp.dmi.service.model.CmHandleOperation;
+import org.onap.cps.ncmp.dmi.service.model.CreatedCmHandle;
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference;
+import org.onap.cps.ncmp.dmi.service.model.ModuleSchema;
+import org.onap.cps.ncmp.dmi.service.operation.SdncOperations;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+
+@Service
+@Slf4j
+public class DmiServiceImpl implements DmiService {
+
+    private SdncOperations sdncOperations;
+    private NcmpRestClient ncmpRestClient;
+    private ObjectMapper objectMapper;
+    private DmiPluginProperties dmiPluginProperties;
+
+    /**
+     * Constructor.
+     *
+     * @param dmiPluginProperties dmiPluginProperties
+     * @param ncmpRestClient      ncmpRestClient
+     * @param sdncOperations      sdncOperations
+     * @param objectMapper        objectMapper
+     */
+    public DmiServiceImpl(final DmiPluginProperties dmiPluginProperties,
+        final NcmpRestClient ncmpRestClient,
+        final SdncOperations sdncOperations, final ObjectMapper objectMapper) {
+        this.dmiPluginProperties = dmiPluginProperties;
+        this.ncmpRestClient = ncmpRestClient;
+        this.objectMapper = objectMapper;
+        this.sdncOperations = sdncOperations;
+    }
+
+    @Override
+    public ModuleSet getModulesForCmHandle(final String cmHandle) throws DmiException {
+        final Collection<ModuleSchema> moduleSchemas = sdncOperations.getModuleSchemasFromNode(cmHandle);
+        if (moduleSchemas.isEmpty()) {
+            throw new ModulesNotFoundException(cmHandle, "SDNC returned no modules for given cm-handle.");
+        } else {
+            final ModuleSet moduleSet = new ModuleSet();
+            moduleSchemas.forEach(moduleSchema ->
+                moduleSet.addSchemasItem(toModuleSetSchemas(moduleSchema)));
+            return moduleSet;
+        }
+    }
+
+    @Override
+    public YangResources getModuleResources(final String cmHandle, final List<ModuleReference> moduleReferences) {
+        final YangResources yangResources = new YangResources();
+        for (final ModuleReference moduleReference : moduleReferences) {
+            final String moduleRequest = createModuleRequest(moduleReference);
+            final ResponseEntity<String> responseEntity = sdncOperations.getModuleResource(cmHandle, moduleRequest);
+            if (responseEntity.getStatusCode() == HttpStatus.OK) {
+                final YangResource yangResource = YangResourceExtractor.toYangResource(moduleReference, responseEntity);
+                yangResources.add(yangResource);
+            } else if (responseEntity.getStatusCode() == HttpStatus.NOT_FOUND) {
+                log.error("SDNC did not return a module resource for the given cmHandle {}", cmHandle);
+                throw new ModuleResourceNotFoundException(cmHandle,
+                    "SDNC did not return a module resource for the given cmHandle.");
+            } else {
+                log.error("Error occurred when getting module resources from SDNC for the given cmHandle {}", cmHandle);
+                throw new HttpClientRequestException(
+                    cmHandle, responseEntity.getBody(), (HttpStatus) responseEntity.getStatusCode());
+            }
+        }
+        return yangResources;
+    }
+
+    @Override
+    public void registerCmHandles(final List<String> cmHandles) {
+        final CmHandleOperation cmHandleOperation = new CmHandleOperation();
+        cmHandleOperation.setDmiPlugin(dmiPluginProperties.getDmiServiceUrl());
+        final List<CreatedCmHandle> createdCmHandleList = new ArrayList<>();
+        for (final String cmHandle : cmHandles) {
+            final CreatedCmHandle createdCmHandle = new CreatedCmHandle();
+            createdCmHandle.setCmHandle(cmHandle);
+            createdCmHandleList.add(createdCmHandle);
+        }
+        cmHandleOperation.setCreatedCmHandles(createdCmHandleList);
+        final String cmHandlesJson;
+        try {
+            cmHandlesJson = objectMapper.writeValueAsString(cmHandleOperation);
+        } catch (final JsonProcessingException e) {
+            log.error("Parsing error occurred while converting cm-handles to JSON {}", cmHandles);
+            throw new DmiException("Internal Server Error.",
+                "Parsing error occurred while converting given cm-handles object list to JSON ");
+        }
+        final ResponseEntity<String> responseEntity = ncmpRestClient.registerCmHandlesWithNcmp(cmHandlesJson);
+        if (!responseEntity.getStatusCode().is2xxSuccessful()) {
+            throw new CmHandleRegistrationException(responseEntity.getBody());
+        }
+    }
+
+    private ModuleSetSchemasInner toModuleSetSchemas(final ModuleSchema moduleSchema) {
+        final ModuleSetSchemasInner moduleSetSchemas = new ModuleSetSchemasInner();
+        moduleSetSchemas.setModuleName(moduleSchema.getIdentifier());
+        moduleSetSchemas.setNamespace(moduleSchema.getNamespace());
+        moduleSetSchemas.setRevision(moduleSchema.getVersion());
+        return moduleSetSchemas;
+    }
+
+    @Override
+    public String getResourceData(final String cmHandle,
+        final String resourceIdentifier,
+        final String optionsParamInQuery,
+        final String restconfContentQueryParam) {
+        final ResponseEntity<String> responseEntity = sdncOperations.getResouceDataForOperationalAndRunning(cmHandle,
+            resourceIdentifier,
+            optionsParamInQuery,
+            restconfContentQueryParam);
+        return prepareAndSendResponse(responseEntity, cmHandle);
+    }
+
+    @Override
+    public String writeData(final DataAccessRequest.OperationEnum operation,
+                            final String cmHandle,
+                            final String resourceIdentifier,
+                            final String dataType, final String data) {
+        final ResponseEntity<String> responseEntity =
+            sdncOperations.writeData(operation, cmHandle, resourceIdentifier, dataType, data);
+        return prepareAndSendResponse(responseEntity, cmHandle);
+    }
+
+    private String prepareAndSendResponse(final ResponseEntity<String> responseEntity, final String cmHandle) {
+        if (responseEntity.getStatusCode().is2xxSuccessful()) {
+            return responseEntity.getBody();
+        } else {
+            throw new HttpClientRequestException(cmHandle, responseEntity.getBody(),
+                    (HttpStatus) responseEntity.getStatusCode());
+        }
+    }
+
+    private String createModuleRequest(final ModuleReference moduleReference) {
+        final Map<String, String> ietfNetconfModuleReferences = new LinkedHashMap<>();
+        ietfNetconfModuleReferences.put("ietf-netconf-monitoring:identifier", moduleReference.getName());
+        ietfNetconfModuleReferences.put("ietf-netconf-monitoring:version", moduleReference.getRevision());
+        final ObjectWriter objectWriter = objectMapper.writer().withRootName("ietf-netconf-monitoring:input");
+        final String moduleRequest;
+        try {
+            moduleRequest = objectWriter.writeValueAsString(ietfNetconfModuleReferences);
+        } catch (final JsonProcessingException e) {
+            log.error("JSON exception occurred when creating the module request for the given module reference {}",
+                moduleReference.getName());
+            throw new DmiException("Unable to process JSON.",
+                "JSON exception occurred when creating the module request.", e);
+        }
+        return moduleRequest;
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/YangResourceExtractor.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/YangResourceExtractor.java
new file mode 100644
index 00000000..d41240b9
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/YangResourceExtractor.java
@@ -0,0 +1,59 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.exception.ModuleResourceNotFoundException;
+import org.onap.cps.ncmp.dmi.model.YangResource;
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference;
+import org.springframework.http.ResponseEntity;
+
+@Slf4j
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class YangResourceExtractor {
+
+    static YangResource toYangResource(final ModuleReference moduleReference,
+                                       final ResponseEntity<String> responseEntity) {
+        final YangResource yangResource = new YangResource();
+        yangResource.setModuleName(moduleReference.getName());
+        yangResource.setRevision(moduleReference.getRevision());
+        yangResource.setYangSource(extractYangSourceFromBody(responseEntity));
+        return yangResource;
+    }
+
+    private static String extractYangSourceFromBody(final ResponseEntity<String> responseEntity) {
+        final JsonObject responseBodyAsJsonObject = new Gson().fromJson(responseEntity.getBody(), JsonObject.class);
+        final JsonObject monitoringOutputAsJsonObject =
+            responseBodyAsJsonObject.getAsJsonObject("ietf-netconf-monitoring:output");
+        if (monitoringOutputAsJsonObject == null
+            || monitoringOutputAsJsonObject.getAsJsonPrimitive("data") == null) {
+            log.error("Error occurred when trying to parse the response body from sdnc {}", responseEntity.getBody());
+            throw new ModuleResourceNotFoundException(responseEntity.getBody(),
+                "Error occurred when trying to parse the response body from sdnc.");
+        }
+        return monitoringOutputAsJsonObject.getAsJsonPrimitive("data").getAsString();
+    }
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/client/NcmpRestClient.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/client/NcmpRestClient.java
new file mode 100644
index 00000000..94783f3b
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/client/NcmpRestClient.java
@@ -0,0 +1,64 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.client;
+
+import org.onap.cps.ncmp.dmi.config.DmiConfiguration.CpsProperties;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.UriComponentsBuilder;
+
+@Component
+public class NcmpRestClient {
+
+    private CpsProperties cpsProperties;
+    private RestTemplate restTemplate;
+
+    public NcmpRestClient(final CpsProperties cpsProperties, final RestTemplate restTemplate) {
+        this.cpsProperties = cpsProperties;
+        this.restTemplate = restTemplate;
+    }
+
+    /**
+     * Register a cmHandle with NCMP using a HTTP call.
+     * @param jsonData json data
+     * @return the response entity
+     */
+    public ResponseEntity<String> registerCmHandlesWithNcmp(final String jsonData) {
+        final var ncmpRegistrationUrl = buildNcmpRegistrationUrl();
+        final var httpHeaders = new HttpHeaders();
+        httpHeaders.setBasicAuth(cpsProperties.getAuthUsername(), cpsProperties.getAuthPassword());
+        httpHeaders.set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
+        final var httpEntity = new HttpEntity<>(jsonData, httpHeaders);
+        return restTemplate.exchange(ncmpRegistrationUrl, HttpMethod.POST, httpEntity, String.class);
+    }
+
+    private String buildNcmpRegistrationUrl() {
+        return UriComponentsBuilder
+            .fromHttpUrl(cpsProperties.getBaseUrl())
+            .path(cpsProperties.getDmiRegistrationUrl())
+            .toUriString();
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/client/SdncRestconfClient.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/client/SdncRestconfClient.java
new file mode 100644
index 00000000..179707ab
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/client/SdncRestconfClient.java
@@ -0,0 +1,87 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.client;
+
+import org.onap.cps.ncmp.dmi.config.DmiConfiguration.SdncProperties;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+
+@Component
+public class SdncRestconfClient {
+
+    private SdncProperties sdncProperties;
+    private RestTemplate restTemplate;
+
+    public SdncRestconfClient(final SdncProperties sdncProperties, final RestTemplate restTemplate) {
+        this.sdncProperties = sdncProperties;
+        this.restTemplate = restTemplate;
+    }
+
+    /**
+     * restconf get operation on sdnc.
+     *
+     * @param getResourceUrl sdnc get url
+     * @return the response entity
+     */
+    public ResponseEntity<String> getOperation(final String getResourceUrl) {
+        return getOperation(getResourceUrl, new HttpHeaders());
+    }
+
+    /**
+     * Overloaded restconf get operation on sdnc with http headers.
+     *
+     * @param getResourceUrl sdnc get url
+     * @param httpHeaders    http headers
+     * @return the response entity
+     */
+    public ResponseEntity<String> getOperation(final String getResourceUrl, final HttpHeaders httpHeaders) {
+        return  httpOperationWithJsonData(HttpMethod.GET, getResourceUrl, null, httpHeaders);
+    }
+
+    /**
+     * restconf http operations on sdnc.
+     *
+     * @param httpMethod HTTP Method
+     * @param resourceUrl sdnc resource url
+     * @param jsonData json data
+     * @param httpHeaders HTTP Headers
+     * @return response entity
+     */
+    public ResponseEntity<String> httpOperationWithJsonData(final HttpMethod httpMethod,
+                                                            final String resourceUrl,
+                                                            final String jsonData,
+                                                            final HttpHeaders httpHeaders) {
+        final String sdncBaseUrl = sdncProperties.getBaseUrl();
+        final String sdncRestconfUrl = sdncBaseUrl.concat(resourceUrl);
+        httpHeaders.setBasicAuth(sdncProperties.getAuthUsername(), sdncProperties.getAuthPassword());
+        final HttpEntity<String> httpEntity;
+        if (jsonData == null) {
+            httpEntity = new HttpEntity<>(httpHeaders);
+        } else {
+            httpEntity = new HttpEntity<>(jsonData, httpHeaders);
+        }
+        return restTemplate.exchange(sdncRestconfUrl, httpMethod, httpEntity, String.class);
+    }
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/CmHandleOperation.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/CmHandleOperation.java
new file mode 100644
index 00000000..82eac92a
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/CmHandleOperation.java
@@ -0,0 +1,35 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import java.util.List;
+import lombok.Getter;
+import lombok.Setter;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+@Getter
+@Setter
+public class CmHandleOperation {
+
+    private String dmiPlugin;
+    private List<CreatedCmHandle> createdCmHandles;
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/CreatedCmHandle.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/CreatedCmHandle.java
new file mode 100644
index 00000000..6ab6a01e
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/CreatedCmHandle.java
@@ -0,0 +1,36 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import java.util.Map;
+import lombok.Getter;
+import lombok.Setter;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+@Getter
+@Setter
+public class CreatedCmHandle {
+
+    private String cmHandle;
+    private Map<String, String> cmHandleProperties;
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/ModuleReference.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/ModuleReference.java
new file mode 100644
index 00000000..75c37dff
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/ModuleReference.java
@@ -0,0 +1,37 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.model;
+
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Module Reference.
+ */
+@Getter
+@Setter
+@EqualsAndHashCode
+public class ModuleReference {
+
+    private String name;
+    private String revision;
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/ModuleSchema.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/ModuleSchema.java
new file mode 100644
index 00000000..c77e0e41
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/model/ModuleSchema.java
@@ -0,0 +1,36 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  Modifications Copyright (C) 2021 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.model;
+
+import java.util.List;
+import lombok.Data;
+
+@Data
+public class ModuleSchema {
+
+    private String identifier;
+    private String version;
+    private String format;
+    private String namespace;
+    private List<String> location;
+
+}
diff --git a/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/operation/SdncOperations.java b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/operation/SdncOperations.java
new file mode 100644
index 00000000..fd94e634
--- /dev/null
+++ b/dmi-service/src/main/java/org/onap/cps/ncmp/dmi/service/operation/SdncOperations.java
@@ -0,0 +1,270 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.operation;
+
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum;
+
+import com.jayway.jsonpath.Configuration;
+import com.jayway.jsonpath.JsonPath;
+import com.jayway.jsonpath.JsonPathException;
+import com.jayway.jsonpath.TypeRef;
+import com.jayway.jsonpath.spi.json.JacksonJsonProvider;
+import com.jayway.jsonpath.spi.mapper.JacksonMappingProvider;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.EnumMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import org.onap.cps.ncmp.dmi.config.DmiConfiguration.SdncProperties;
+import org.onap.cps.ncmp.dmi.exception.SdncException;
+import org.onap.cps.ncmp.dmi.model.DataAccessRequest;
+import org.onap.cps.ncmp.dmi.service.client.SdncRestconfClient;
+import org.onap.cps.ncmp.dmi.service.model.ModuleSchema;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Component;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.util.UriComponentsBuilder;
+
+@Component
+public class SdncOperations {
+
+    private static final String TOPOLOGY_URL_TEMPLATE_DATA = "/rests/data/network-topology:network-topology/";
+    private static final String TOPOLOGY_URL_TEMPLATE_OPERATIONAL =
+        "/rests/operations/network-topology:network-topology/";
+    private static final String GET_SCHEMA_URL = "ietf-netconf-monitoring:netconf-state/schemas";
+    private static final String GET_SCHEMA_SOURCES_URL = "/ietf-netconf-monitoring:get-schema";
+    private static final String PATH_TO_MODULE_SCHEMAS = "$.ietf-netconf-monitoring:schemas.schema";
+    private static final int QUERY_PARAM_SPLIT_LIMIT = 2;
+    private static final int QUERY_PARAM_VALUE_INDEX = 1;
+    private static final int QUERY_PARAM_NAME_INDEX = 0;
+
+    private static EnumMap<OperationEnum, HttpMethod> operationToHttpMethodMap = new EnumMap<>(OperationEnum.class);
+
+    static {
+        operationToHttpMethodMap.put(OperationEnum.READ, HttpMethod.GET);
+        operationToHttpMethodMap.put(OperationEnum.CREATE, HttpMethod.POST);
+        operationToHttpMethodMap.put(OperationEnum.PATCH, HttpMethod.PATCH);
+        operationToHttpMethodMap.put(OperationEnum.UPDATE, HttpMethod.PUT);
+        operationToHttpMethodMap.put(OperationEnum.DELETE, HttpMethod.DELETE);
+    }
+
+    private final SdncProperties sdncProperties;
+    private final SdncRestconfClient sdncRestconfClient;
+    private final String topologyUrlData;
+    private final String topologyUrlOperational;
+
+    private Configuration jsonPathConfiguration = Configuration.builder()
+        .mappingProvider(new JacksonMappingProvider())
+        .jsonProvider(new JacksonJsonProvider())
+        .build();
+
+    /**
+     * Constructor for {@code SdncOperations}. This method also manipulates url properties.
+     *
+     * @param sdncProperties     {@code SdncProperties}
+     * @param sdncRestconfClient {@code SdncRestconfClient}
+     */
+    public SdncOperations(final SdncProperties sdncProperties, final SdncRestconfClient sdncRestconfClient) {
+        this.sdncProperties = sdncProperties;
+        this.sdncRestconfClient = sdncRestconfClient;
+        topologyUrlOperational = getTopologyUrlOperational();
+        topologyUrlData = getTopologyUrlData();
+    }
+
+    /**
+     * This method fetches list of modules usind sdnc client.
+     *
+     * @param nodeId node id for node
+     * @return a collection of module schemas
+     */
+    public Collection<ModuleSchema> getModuleSchemasFromNode(final String nodeId) {
+        final String urlWithNodeId = prepareGetSchemaUrl(nodeId);
+        final ResponseEntity<String> modulesResponseEntity = sdncRestconfClient.getOperation(urlWithNodeId);
+        if (modulesResponseEntity.getStatusCode() == HttpStatus.OK) {
+            final String modulesResponseBody = modulesResponseEntity.getBody();
+            if (modulesResponseBody == null || modulesResponseBody.isBlank()) {
+                return Collections.emptyList();
+            }
+            return convertToModuleSchemas(modulesResponseBody);
+        }
+        throw new SdncException(
+                String.format("SDNC failed to get Modules Schema for node %s", nodeId),
+                (HttpStatus) modulesResponseEntity.getStatusCode(), modulesResponseEntity.getBody());
+    }
+
+    /**
+     * Get module schema.
+     *
+     * @param nodeId           node ID
+     * @param moduleProperties module properties
+     * @return response entity
+     */
+    public ResponseEntity<String> getModuleResource(final String nodeId, final String moduleProperties) {
+        final String getYangResourceUrl = prepareGetOperationSchemaUrl(nodeId);
+        final HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.setContentType(MediaType.APPLICATION_JSON);
+        return sdncRestconfClient.httpOperationWithJsonData(
+            HttpMethod.POST, getYangResourceUrl, moduleProperties, httpHeaders);
+    }
+
+    /**
+     * This method fetches the resource data for given node identifier on given resource using sdnc client.
+     *
+     * @param nodeId                    network resource identifier
+     * @param resourceId                resource identifier
+     * @param optionsParamInQuery       fields query
+     * @param restConfContentQueryParam restConf content query param
+     * @return {@code ResponseEntity} response entity
+     */
+    public ResponseEntity<String> getResouceDataForOperationalAndRunning(final String nodeId,
+        final String resourceId,
+        final String optionsParamInQuery,
+        final String restConfContentQueryParam) {
+        final String getResourceDataUrl = prepareResourceDataUrl(nodeId,
+            resourceId, buildQueryParamMap(optionsParamInQuery, restConfContentQueryParam));
+        return sdncRestconfClient.getOperation(getResourceDataUrl);
+    }
+
+    /**
+     * Write resource data.
+     *
+     * @param nodeId      network resource identifier
+     * @param resourceId  resource identifier
+     * @param contentType http content type
+     * @param requestData request data
+     * @return {@code ResponseEntity} response entity
+     */
+    public ResponseEntity<String> writeData(final DataAccessRequest.OperationEnum operation,
+                                            final String nodeId,
+                                            final String resourceId,
+                                            final String contentType,
+                                            final String requestData) {
+        final String getResourceDataUrl = prepareWriteUrl(nodeId, resourceId);
+        final HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.setContentType(MediaType.parseMediaType(contentType));
+        final HttpMethod httpMethod = operationToHttpMethodMap.get(operation);
+        return sdncRestconfClient.httpOperationWithJsonData(httpMethod, getResourceDataUrl, requestData, httpHeaders);
+    }
+
+    private MultiValueMap<String, String> buildQueryParamMap(final String optionsParamInQuery,
+                                                             final String restConfContentQueryParam) {
+        return getQueryParamsAsMap(optionsParamInQuery, restConfContentQueryParam);
+    }
+
+    private MultiValueMap<String, String> getQueryParamsAsMap(final String optionsParamInQuery,
+                                                              final String restConfContentQueryParam) {
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<>();
+        if (optionsParamInQuery != null && !optionsParamInQuery.isBlank()) {
+            queryParams.setAll(extractQueryParams(optionsParamInQuery, restConfContentQueryParam));
+        }
+        return queryParams;
+    }
+
+    private String stripParenthesisFromOptionsQuery(final String optionsParamInQuery) {
+        return optionsParamInQuery.substring(1, optionsParamInQuery.length() - 1);
+    }
+
+    private String prepareGetSchemaUrl(final String nodeId) {
+        return addResource(addTopologyDataUrlwithNode(nodeId), GET_SCHEMA_URL);
+    }
+
+    private String prepareWriteUrl(final String nodeId, final String resourceId) {
+        return addResource(addTopologyDataUrlwithNode(nodeId), resourceId);
+    }
+
+    private String prepareGetOperationSchemaUrl(final String nodeId) {
+        return UriComponentsBuilder.fromUriString(topologyUrlOperational)
+                .pathSegment("node={nodeId}")
+                .pathSegment("yang-ext:mount")
+                .path(GET_SCHEMA_SOURCES_URL)
+                .buildAndExpand(nodeId).toUriString();
+    }
+
+    private String prepareResourceDataUrl(final String nodeId,
+                                          final String resourceId,
+                                          final MultiValueMap<String, String> queryMap) {
+        return addQuery(addResource(addTopologyDataUrlwithNode(nodeId), resourceId), queryMap);
+    }
+
+    private String addResource(final String url, final String resourceId) {
+        return UriComponentsBuilder.fromUriString(url)
+                .pathSegment(resourceId)
+                .buildAndExpand().toUriString();
+    }
+
+    private String addQuery(final String url, final MultiValueMap<String, String> queryMap) {
+        return UriComponentsBuilder.fromUriString(url)
+                .queryParams(queryMap)
+                .buildAndExpand().toUriString();
+    }
+
+    private String addTopologyDataUrlwithNode(final String nodeId) {
+        return UriComponentsBuilder.fromUriString(topologyUrlData)
+                .pathSegment("node={nodeId}")
+                .pathSegment("yang-ext:mount")
+                .buildAndExpand(nodeId).toUriString();
+    }
+
+    private List<ModuleSchema> convertToModuleSchemas(final String modulesListAsJson) {
+        try {
+            return JsonPath.using(jsonPathConfiguration).parse(modulesListAsJson).read(
+                PATH_TO_MODULE_SCHEMAS, new TypeRef<>() {
+                });
+        } catch (final JsonPathException jsonPathException) {
+            throw new SdncException("SDNC Response processing failed",
+                "SDNC response is not in the expected format.", jsonPathException);
+        }
+    }
+
+    private String getTopologyUrlData() {
+        return UriComponentsBuilder.fromUriString(TOPOLOGY_URL_TEMPLATE_DATA)
+                .path("topology={topologyId}")
+                .buildAndExpand(this.sdncProperties.getTopologyId()).toUriString();
+    }
+
+    private String getTopologyUrlOperational() {
+        return UriComponentsBuilder.fromUriString(
+                        TOPOLOGY_URL_TEMPLATE_OPERATIONAL)
+                .path("topology={topologyId}")
+                .buildAndExpand(this.sdncProperties.getTopologyId()).toUriString();
+    }
+
+    private Map<String, String> extractQueryParams(final String optionsParamInQuery,
+                                                   final String restConfContentQueryParam) {
+        final String QueryParamsAsString = stripParenthesisFromOptionsQuery(optionsParamInQuery)
+                + "," + restConfContentQueryParam;
+        final String[] splitTempQueryByComma = QueryParamsAsString.split(",");
+        return Arrays.stream(splitTempQueryByComma)
+                .map(queryParamPair -> queryParamPair.split("=", QUERY_PARAM_SPLIT_LIMIT))
+                .filter(queryParam -> queryParam.length > 1)
+                .collect(Collectors.toMap(
+                        queryParam -> queryParam[QUERY_PARAM_NAME_INDEX],
+                        queryParam -> queryParam[QUERY_PARAM_VALUE_INDEX]));
+    }
+}
diff --git a/dmi-service/src/main/resources/application.yml b/dmi-service/src/main/resources/application.yml
new file mode 100644
index 00000000..003aa191
--- /dev/null
+++ b/dmi-service/src/main/resources/application.yml
@@ -0,0 +1,128 @@
+#  ============LICENSE_START=======================================================
+#  Copyright (C) 2021-2024 Nordix Foundation
+#  Modifications Copyright (C) 2021 Bell Canada.
+#  ================================================================================
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+#  SPDX-License-Identifier: Apache-2.0
+#  ============LICENSE_END=========================================================
+
+server:
+  port: 8080
+
+dmi:
+  service:
+    url: ${DMI_SERVICE_URL}
+    name: ${DMI_SERVICE_NAME:ncmp-dmi-plugin}
+
+rest:
+  api:
+    dmi-base-path: /dmi
+
+security:
+  permit-uri: /actuator/**,/swagger-ui.html,/swagger-ui/**,/swagger-resources/**,/api-docs/**,/v3/api-docs/**
+  auth:
+    username: ${DMI_USERNAME}
+    password: ${DMI_PASSWORD}
+
+# When updating to sprinboot 2.6.4 an exception would occur when starting the container
+# "Failed to start bean 'documentationPluginsBootstrapper'.
+# This is a known issue with springfox and springboot introduced in 2.6.x:
+# https://github.com/springfox/springfox/issues/3462
+spring:
+  application:
+    name: ncmp-dmi-plugin
+  mvc:
+    pathmatch:
+      matching-strategy: ANT_PATH_MATCHER
+  kafka:
+    bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVER:localhost:9092}
+    security:
+      protocol: PLAINTEXT
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.StringSerializer
+      value-serializer: io.cloudevents.kafka.CloudEventSerializer
+      client-id: ncmp-dmi-plugin
+    consumer:
+      group-id: ${NCMP_CONSUMER_GROUP_ID:ncmp-group}
+      key-deserializer: org.springframework.kafka.support.serializer.ErrorHandlingDeserializer
+      value-deserializer: org.springframework.kafka.support.serializer.ErrorHandlingDeserializer
+      properties:
+        spring.deserializer.key.delegate.class: org.apache.kafka.common.serialization.StringDeserializer
+        spring.deserializer.value.delegate.class: io.cloudevents.kafka.CloudEventDeserializer
+        spring.json.use.type.headers: false
+
+    jackson:
+      serialization:
+        FAIL_ON_EMPTY_BEANS: false
+
+app:
+  ncmp:
+    async:
+      topic: ${NCMP_ASYNC_M2M_TOPIC:ncmp-async-m2m}
+  dmi:
+    avc:
+      cm-subscription-dmi-in: ${CM_SUBSCRIPTION_DMI_IN_TOPIC:ncmp-dmi-cm-avc-subscription}
+      cm-subscription-dmi-out: ${CM_SUBSCRIPTION_DMI_OUT_TOPIC:dmi-ncmp-cm-avc-subscription}
+
+notification:
+  async:
+    executor:
+      time-out-value-in-ms: 2000
+
+# Actuator
+management:
+  endpoints:
+    web:
+      exposure:
+        include: info,health,loggers,prometheus
+  endpoint:
+    health:
+      show-details: always
+      # kubernetes probes: liveness and readiness
+      probes:
+        enabled: true
+    loggers:
+      enabled: true
+
+cps-core:
+  baseUrl: http://${CPS_CORE_HOST}:${CPS_CORE_PORT}
+  dmiRegistrationUrl : /ncmpInventory/v1/ch
+  auth:
+    username: ${CPS_CORE_USERNAME}
+    password: ${CPS_CORE_PASSWORD}
+
+sdnc:
+  baseUrl: http://${SDNC_HOST}:${SDNC_PORT}
+  topologyId: ${SDNC_TOPOLOGY_ID:topology-netconf}
+  auth:
+    username: ${SDNC_USERNAME}
+    password: ${SDNC_PASSWORD}
+
+logging:
+  format: json
+  level:
+    org.springframework: ERROR
+    org.onap.cps: DEBUG
+  pattern:
+    console: "%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"
+    file: "%d %p %c{1.} [%t] %m%n"
+  file: dmi.log
+
+springdoc:
+  swagger-ui:
+    disable-swagger-default-url: true
+    urlsPrimaryName: query
+    urls:
+      - name: query
+        url: /api-docs/openapi.yaml
diff --git a/dmi-service/src/main/resources/logback-spring.xml b/dmi-service/src/main/resources/logback-spring.xml
new file mode 100644
index 00000000..355209b4
--- /dev/null
+++ b/dmi-service/src/main/resources/logback-spring.xml
@@ -0,0 +1,75 @@
+<!--
+ ============LICENSE_START=======================================================
+ Copyright (C) 2022 Nordix Foundation
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+ SPDX-License-Identifier: Apache-2.0
+ ============LICENSE_END=========================================================
+-->
+
+<configuration scan="true" scanPeriod="30 seconds" debug="false">
+
+    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
+    <include resource="org/springframework/boot/logging/logback/console-appender.xml" />
+
+    <springProperty scope="context" name="springAppName" source="spring.application.name"/>
+    <springProperty scope="context" name="username" source="security.auth.username"/>
+    <springProperty scope="context" name="loggingFormat" source="logging.format"/>
+
+    <property name="currentTimeStamp" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC}"/>
+
+    <appender name="jsonConsole"
+              class="ch.qos.logback.core.ConsoleAppender">
+        <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
+            <providers>
+                <pattern>
+                    <omitEmptyFields>true</omitEmptyFields>
+                    <pattern>
+                        {
+                        "logTimeStamp": "${currentTimeStamp:-}",
+                        "logTypeName": "",
+                        "logLevel": "%level",
+                        "traceId": "%X{traceId:-}",
+                        "statusCode": "",
+                        "principalId": "${username:-}",
+                        "serviceName": "${springAppName:-}",
+                        "message": "%message",
+                        "spanId": "%X{spanId:-}",
+                        "processId": "${PID:-}",
+                        "threadName": "%thread",
+                        "class": "%logger{40}",
+                        "exception": "%wEx"
+                        }
+                    </pattern>
+                </pattern>
+            </providers>
+        </encoder>
+    </appender>
+
+    <appender name="asyncConsole" class="ch.qos.logback.classic.AsyncAppender">
+        <if condition='property("loggingFormat").equalsIgnoreCase("json")'>
+            <then>
+                <appender-ref ref="jsonConsole"/>
+            </then>
+            <else>
+                <appender-ref ref="CONSOLE"/>
+            </else>
+        </if>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="asyncConsole"/>
+    </root>
+
+</configuration>
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/api/kafka/MessagingBaseSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/api/kafka/MessagingBaseSpec.groovy
new file mode 100644
index 00000000..13dd043d
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/api/kafka/MessagingBaseSpec.groovy
@@ -0,0 +1,79 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2023 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.api.kafka
+
+import io.cloudevents.CloudEvent
+import io.cloudevents.kafka.CloudEventDeserializer
+import io.cloudevents.kafka.CloudEventSerializer
+import org.apache.kafka.clients.consumer.KafkaConsumer
+import org.apache.kafka.common.serialization.StringDeserializer
+import org.apache.kafka.common.serialization.StringSerializer
+import org.springframework.kafka.core.DefaultKafkaProducerFactory
+import org.springframework.kafka.core.KafkaTemplate
+import org.springframework.kafka.support.serializer.JsonSerializer
+import org.springframework.test.context.DynamicPropertyRegistry
+import org.springframework.test.context.DynamicPropertySource
+import org.testcontainers.containers.KafkaContainer
+import org.testcontainers.utility.DockerImageName
+import spock.lang.Specification
+
+class MessagingBaseSpec extends Specification {
+
+    def setupSpec() {
+        kafkaTestContainer.start()
+    }
+
+    def cleanupSpec() {
+        kafkaTestContainer.stop()
+    }
+
+    static kafkaTestContainer = new KafkaContainer(DockerImageName.parse('registry.nordix.org/onaptest/confluentinc/cp-kafka:6.2.1').asCompatibleSubstituteFor('confluentinc/cp-kafka'))
+
+    def producerConfigProperties(valueSerializer) {
+        return [('bootstrap.servers'): kafkaTestContainer.getBootstrapServers().split(',')[0],
+                ('retries')          : 0,
+                ('batch-size')       : 16384,
+                ('linger.ms')        : 1,
+                ('buffer.memory')    : 33554432,
+                ('key.serializer')   : StringSerializer,
+                ('value.serializer') : valueSerializer]
+    }
+
+    def consumerConfigProperties(consumerGroupId, valueDeserializer) {
+        return [('bootstrap.servers') : kafkaTestContainer.getBootstrapServers().split(',')[0],
+                ('key.deserializer')  : StringDeserializer,
+                ('value.deserializer'): valueDeserializer,
+                ('auto.offset.reset') : 'earliest',
+                ('group.id')          : consumerGroupId
+        ]
+    }
+
+    def kafkaTemplate = new KafkaTemplate<>(new DefaultKafkaProducerFactory<Integer, String>(producerConfigProperties(JsonSerializer)))
+    def kafkaConsumer = new KafkaConsumer<>(consumerConfigProperties('ncmp-test-group', StringDeserializer))
+
+    def cloudEventKafkaTemplate = new KafkaTemplate(new DefaultKafkaProducerFactory<String, CloudEvent>(producerConfigProperties(CloudEventSerializer)))
+    def cloudEventKafkaConsumer = new KafkaConsumer<>(consumerConfigProperties('ncmp-test-group', CloudEventDeserializer))
+
+    @DynamicPropertySource
+    static void registerKafkaProperties(DynamicPropertyRegistry dynamicPropertyRegistry) {
+        dynamicPropertyRegistry.add('spring.kafka.bootstrap-servers', kafkaTestContainer::getBootstrapServers)
+    }
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/DmiConfigurationSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/DmiConfigurationSpec.groovy
new file mode 100644
index 00000000..9d80b71f
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/DmiConfigurationSpec.groovy
@@ -0,0 +1,66 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.web.client.RestTemplateBuilder
+import org.springframework.test.context.ContextConfiguration
+import spock.lang.Specification
+
+@SpringBootTest
+@ContextConfiguration(classes = [DmiConfiguration.CpsProperties, DmiConfiguration.SdncProperties])
+class DmiConfigurationSpec extends Specification {
+
+    @Autowired
+    DmiConfiguration.CpsProperties cpsProperties
+
+    @Autowired
+    DmiConfiguration.SdncProperties sdncProperties
+
+    def 'CPS properties configuration.'() {
+        expect: 'CPS properties are set to values in test configuration yaml file'
+            cpsProperties.baseUrl == 'some url for cps'
+            cpsProperties.dmiRegistrationUrl == 'some registration url'
+            cpsProperties.authUsername == 'some cps core user'
+            cpsProperties.authPassword == 'some cps core password'
+    }
+
+    def 'SDNC properties configuration.'() {
+        expect: 'SDNC properties are set to values in test configuration yaml file'
+            sdncProperties.authUsername == 'test'
+            sdncProperties.authPassword == 'test'
+            sdncProperties.baseUrl == 'http://test'
+            sdncProperties.topologyId == 'test-topology'
+    }
+
+    def 'Rest template building.'() {
+        given: 'a DMI configuration'
+            DmiConfiguration objectUnderTest = new DmiConfiguration()
+        and: 'a rest template builder'
+            RestTemplateBuilder mockRestTemplateBuilder = Spy(RestTemplateBuilder)
+        when: 'rest template method is invoked'
+            objectUnderTest.restTemplate(mockRestTemplateBuilder)
+        then: 'DMI configuration uses the build method on the template builder'
+            1 * mockRestTemplateBuilder.build()
+    }
+
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/DmiPluginConfigSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/DmiPluginConfigSpec.groovy
new file mode 100644
index 00000000..c09403d7
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/DmiPluginConfigSpec.groovy
@@ -0,0 +1,52 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config
+
+import org.springdoc.core.models.GroupedOpenApi
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.context.ContextConfiguration
+import spock.lang.Specification
+
+@SpringBootTest
+@ContextConfiguration(classes = [DmiPluginConfig.DmiPluginProperties])
+class DmiPluginConfigSpec extends Specification {
+
+    @Autowired
+    DmiPluginConfig.DmiPluginProperties dmiPluginProperties
+
+    def 'DMI plugin properties configuration.'() {
+        expect: 'DMI plugin properties are set to values in test configuration yaml file'
+            dmiPluginProperties.dmiServiceUrl == 'some url for the dmi service'
+    }
+
+    def 'DMI plugin api creation.'() {
+        given: 'a DMI plugin configuration'
+            DmiPluginConfig objectUnderTest = new DmiPluginConfig()
+        when: 'the api method is invoked'
+            def result = objectUnderTest.api()
+        then: 'a spring web plugin docket is returned'
+            result instanceof GroupedOpenApi
+        and: 'it is named "dmi-plugin-api"'
+            result.group == 'dmi-plugin-api'
+    }
+
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/kafka/KafkaConfigSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/kafka/KafkaConfigSpec.groovy
new file mode 100644
index 00000000..a3bf52b3
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/config/kafka/KafkaConfigSpec.groovy
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.config.kafka
+
+import io.cloudevents.CloudEvent
+import io.cloudevents.kafka.CloudEventDeserializer
+import io.cloudevents.kafka.CloudEventSerializer
+import org.spockframework.spring.EnableSharedInjection
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.autoconfigure.kafka.KafkaProperties
+import org.springframework.boot.context.properties.EnableConfigurationProperties
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.kafka.core.KafkaTemplate
+import org.springframework.kafka.support.serializer.JsonDeserializer
+import org.springframework.kafka.support.serializer.JsonSerializer
+import spock.lang.Shared
+import spock.lang.Specification
+
+@SpringBootTest(classes = [KafkaProperties, KafkaConfig])
+@EnableSharedInjection
+@EnableConfigurationProperties
+class KafkaConfigSpec extends Specification {
+
+    @Shared
+    @Autowired
+    KafkaTemplate<String, String> legacyEventKafkaTemplate
+
+    @Shared
+    @Autowired
+    KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate
+
+    def 'Verify kafka template serializer and deserializer configuration for #eventType.'() {
+        expect: 'kafka template is instantiated'
+            assert kafkaTemplateInstance.properties['beanName'] == beanName
+        and: 'verify event key and value serializer'
+            assert kafkaTemplateInstance.properties['producerFactory'].configs['value.serializer'].asType(String.class).contains(valueSerializer.getCanonicalName())
+        and: 'verify event key and value deserializer'
+            assert kafkaTemplateInstance.properties['consumerFactory'].configs['spring.deserializer.value.delegate.class'].asType(String.class).contains(delegateDeserializer.getCanonicalName())
+        where: 'the following event type is used'
+            eventType      | kafkaTemplateInstance    || beanName                   | valueSerializer      | delegateDeserializer
+            'legacy event' | legacyEventKafkaTemplate || 'legacyEventKafkaTemplate' | JsonSerializer       | JsonDeserializer
+            'cloud event'  | cloudEventKafkaTemplate  || 'cloudEventKafkaTemplate'  | CloudEventSerializer | CloudEventDeserializer
+    }
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/datajobs/rest/controller/DmiDatajobsRestControllerSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/datajobs/rest/controller/DmiDatajobsRestControllerSpec.groovy
new file mode 100644
index 00000000..c55f53c1
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/datajobs/rest/controller/DmiDatajobsRestControllerSpec.groovy
@@ -0,0 +1,69 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.datajobs.rest.controller
+
+import org.onap.cps.ncmp.dmi.config.WebSecurityConfig
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
+import org.springframework.context.annotation.Import
+import org.springframework.http.HttpStatus
+import org.springframework.security.test.context.support.WithMockUser
+import org.springframework.test.web.servlet.MockMvc
+import spock.lang.Specification
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post
+
+@Import(WebSecurityConfig)
+@WebMvcTest(DmiDatajobsRestController.class)
+@WithMockUser
+class DmiDatajobsRestControllerSpec extends Specification{
+
+    @Autowired
+    private MockMvc mvc
+
+    @Value('${rest.api.dmi-base-path}/v1')
+    def basePathV1
+
+    def 'write request should return 501 HTTP Status' () {
+        given: 'URL to write a data job'
+            def getModuleUrl = "${basePathV1}/writeJob/001"
+        when: 'the request is posted'
+            def response = mvc.perform(
+                post(getModuleUrl)
+                        .contentType('application/3gpp-json-patch+json')
+        ).andReturn().response
+        then: 'response value is Not Implemented'
+            response.status == HttpStatus.NOT_IMPLEMENTED.value()
+    }
+
+    def 'read request should return 501 HTTP Status' () {
+        given: 'URL to write a data job'
+            def getModuleUrl = "${basePathV1}/readJob/001"
+        when: 'the request is posted'
+            def response = mvc.perform(
+                post(getModuleUrl)
+                        .contentType('application/3gpp-json-patch+json')
+        ).andReturn().response
+        then: 'response value is Not Implemented'
+        response.status == HttpStatus.NOT_IMPLEMENTED.value()
+    }
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/async/AsyncTaskExecutorIntegrationSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/async/AsyncTaskExecutorIntegrationSpec.groovy
new file mode 100644
index 00000000..12ca05cf
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/async/AsyncTaskExecutorIntegrationSpec.groovy
@@ -0,0 +1,110 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2022-2023 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.async
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import org.onap.cps.ncmp.dmi.api.kafka.MessagingBaseSpec
+import org.onap.cps.ncmp.dmi.exception.HttpClientRequestException
+import org.onap.cps.ncmp.dmi.model.DataAccessRequest
+import org.onap.cps.ncmp.event.model.DmiAsyncRequestResponseEvent
+import org.spockframework.spring.SpringBean
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.http.HttpStatus
+import org.springframework.test.annotation.DirtiesContext
+import org.testcontainers.spock.Testcontainers
+
+import java.time.Duration
+import java.util.function.Supplier
+
+@SpringBootTest(classes = [AsyncTaskExecutor, DmiAsyncRequestResponseEventProducer])
+@Testcontainers
+@DirtiesContext
+class AsyncTaskExecutorIntegrationSpec extends MessagingBaseSpec {
+
+    @SpringBean
+    DmiAsyncRequestResponseEventProducer cpsAsyncRequestResponseEventProducer =
+        new DmiAsyncRequestResponseEventProducer(kafkaTemplate)
+
+    def spiedObjectMapper = Spy(ObjectMapper)
+    def mockSupplier = Mock(Supplier)
+
+    def objectUnderTest = new AsyncTaskExecutor(cpsAsyncRequestResponseEventProducer)
+
+    private static final String TEST_TOPIC = 'test-topic'
+
+    def setup() {
+        cpsAsyncRequestResponseEventProducer.dmiNcmpTopic = TEST_TOPIC
+        kafkaConsumer.subscribe([TEST_TOPIC] as List<String>)
+    }
+
+    def cleanup() {
+        kafkaConsumer.close()
+    }
+
+    def 'Publish and Subscribe message - success'() {
+        when: 'a successful event is published'
+            objectUnderTest.publishAsyncEvent(TEST_TOPIC, '12345','{}', 'OK', '200')
+        and: 'the topic is polled'
+            def records = kafkaConsumer.poll(Duration.ofMillis(1500))
+        then: 'the record received is the event sent'
+            def record = records.iterator().next()
+            DmiAsyncRequestResponseEvent event  = spiedObjectMapper.readValue(record.value(), DmiAsyncRequestResponseEvent)
+        and: 'the status & code matches expected'
+            assert event.getEventContent().getResponseStatus() == 'OK'
+            assert event.getEventContent().getResponseCode() == '200'
+    }
+
+    def 'Publish and Subscribe message - failure'() {
+        when: 'a failure event is published'
+            def exception = new HttpClientRequestException('some cm handle', 'Node not found', HttpStatus.INTERNAL_SERVER_ERROR)
+            objectUnderTest.publishAsyncFailureEvent(TEST_TOPIC, '67890', exception)
+        and: 'the topic is polled'
+            def records = kafkaConsumer.poll(Duration.ofMillis(1500))
+        then: 'the record received is the event sent'
+            def record = records.iterator().next()
+            DmiAsyncRequestResponseEvent event  = spiedObjectMapper.readValue(record.value(), DmiAsyncRequestResponseEvent)
+        and: 'the status & code matches expected'
+            assert event.getEventContent().getResponseStatus() == 'Internal Server Error'
+            assert event.getEventContent().getResponseCode() == '500'
+    }
+
+    def 'Execute an Async Task using asyncTaskExecutor and throw an error'() {
+        given: 'A task to be executed'
+            def requestId = '123456'
+            def operationEnum = DataAccessRequest.OperationEnum.CREATE
+            def timeOut = 100
+        when: 'AsyncTask has been executed'
+            objectUnderTest.executeAsyncTask(taskSupplierForFailingTask(), TEST_TOPIC, requestId, operationEnum, timeOut)
+            def records = kafkaConsumer.poll(Duration.ofMillis(1500))
+        then: 'the record received is the event sent'
+            def record = records.iterator().next()
+            DmiAsyncRequestResponseEvent event  = spiedObjectMapper.readValue(record.value(), DmiAsyncRequestResponseEvent)
+        and: 'the status & code matches expected'
+            assert event.getEventContent().getResponseStatus() == 'Internal Server Error'
+            assert event.getEventContent().getResponseCode() == '500'
+
+    }
+
+    def taskSupplierForFailingTask() {
+        return () -> { throw new RuntimeException('original exception message') }
+    }
+
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/avc/AvcEventExecutorIntegrationSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/avc/AvcEventExecutorIntegrationSpec.groovy
new file mode 100644
index 00000000..a7557bb9
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/avc/AvcEventExecutorIntegrationSpec.groovy
@@ -0,0 +1,61 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2023 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.avc
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import io.cloudevents.core.CloudEventUtils
+import io.cloudevents.jackson.PojoCloudEventDataMapper
+import org.onap.cps.ncmp.dmi.api.kafka.MessagingBaseSpec
+import org.onap.cps.ncmp.events.avc1_0_0.AvcEvent
+import org.spockframework.spring.SpringBean
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.annotation.DirtiesContext
+import org.testcontainers.spock.Testcontainers
+
+import java.time.Duration
+
+@SpringBootTest(classes = [DmiDataAvcEventProducer])
+@Testcontainers
+@DirtiesContext
+class AvcEventExecutorIntegrationSpec extends MessagingBaseSpec {
+
+    @SpringBean
+    DmiDataAvcEventProducer dmiDataAvcEventProducer = new DmiDataAvcEventProducer(cloudEventKafkaTemplate)
+
+    def dmiService = new DmiDataAvcEventSimulationController(dmiDataAvcEventProducer)
+
+    def objectMapper = new ObjectMapper()
+
+    def 'Publish Avc Event'() {
+        given: 'a simulated event'
+            dmiService.simulateEvents(1)
+        and: 'a consumer subscribed to dmi-cm-events topic'
+            cloudEventKafkaConsumer.subscribe(['dmi-cm-events'])
+        when: 'the next event record is consumed'
+            def record = cloudEventKafkaConsumer.poll(Duration.ofMillis(1500)).iterator().next()
+        then: 'record has correct topic'
+            assert record.topic == 'dmi-cm-events'
+        and: 'the record value can be mapped to an avcEvent'
+            def dmiDataAvcEvent = record.value()
+            def convertedAvcEvent = CloudEventUtils.mapData(dmiDataAvcEvent, PojoCloudEventDataMapper.from(objectMapper, AvcEvent.class)).getValue()
+            assert convertedAvcEvent != null
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiInEventConsumerSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiInEventConsumerSpec.groovy
new file mode 100644
index 00000000..f1f476f6
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiInEventConsumerSpec.groovy
@@ -0,0 +1,149 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.cmsubscription
+
+import ch.qos.logback.classic.Level
+import ch.qos.logback.classic.Logger
+import ch.qos.logback.classic.spi.ILoggingEvent
+import ch.qos.logback.core.read.ListAppender
+import com.fasterxml.jackson.databind.ObjectMapper
+import io.cloudevents.CloudEvent
+import io.cloudevents.core.builder.CloudEventBuilder
+import org.apache.kafka.clients.consumer.ConsumerRecord
+import org.onap.cps.ncmp.dmi.TestUtils
+import org.onap.cps.ncmp.dmi.api.kafka.MessagingBaseSpec
+import org.onap.cps.ncmp.dmi.notifications.cmsubscription.model.CmNotificationSubscriptionStatus
+import org.onap.cps.ncmp.dmi.notifications.mapper.CloudEventMapper
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.CmNotificationSubscriptionDmiOutEvent
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.Data
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.ncmp_to_dmi.CmNotificationSubscriptionDmiInEvent
+import org.slf4j.LoggerFactory
+import org.spockframework.spring.SpringBean
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.annotation.DirtiesContext
+import org.testcontainers.spock.Testcontainers
+
+import java.sql.Timestamp
+import java.time.Duration
+import java.time.OffsetDateTime
+import java.time.ZoneId
+
+
+@Testcontainers
+@DirtiesContext
+class CmNotificationSubscriptionDmiInEventConsumerSpec extends MessagingBaseSpec {
+    def objectMapper = new ObjectMapper()
+    def testTopic = 'dmi-ncmp-cm-avc-subscription'
+    def testDmiName = 'test-ncmp-dmi'
+
+    @SpringBean
+    CmNotificationSubscriptionDmiInEventConsumer objectUnderTest = new CmNotificationSubscriptionDmiInEventConsumer(cloudEventKafkaTemplate)
+
+    def logger = Spy(ListAppender<ILoggingEvent>)
+
+    void setup() {
+        ((Logger) LoggerFactory.getLogger(CloudEventMapper.class)).addAppender(logger)
+        logger.start()
+    }
+
+    void cleanup() {
+        ((Logger) LoggerFactory.getLogger(CloudEventMapper.class)).detachAndStopAllAppenders()
+    }
+
+    def 'Sends subscription cloud event response successfully.'() {
+        given: 'an subscription event response'
+            objectUnderTest.dmiName = testDmiName
+            objectUnderTest.cmNotificationSubscriptionDmiOutTopic = testTopic
+            def correlationId = 'test-subscriptionId#test-ncmp-dmi'
+            def cmSubscriptionDmiOutEventData = new Data(statusCode: subscriptionStatusCode, statusMessage: subscriptionStatusMessage)
+            def subscriptionEventResponse =
+                    new CmNotificationSubscriptionDmiOutEvent().withData(cmSubscriptionDmiOutEventData)
+        and: 'consumer has a subscription'
+            kafkaConsumer.subscribe([testTopic] as List<String>)
+        when: 'an event is published'
+            def eventKey = UUID.randomUUID().toString()
+            objectUnderTest.createAndSendCmNotificationSubscriptionDmiOutEvent(eventKey, "subscriptionCreatedStatus", correlationId, subscriptionAcceptanceType)
+        and: 'topic is polled'
+            def records = kafkaConsumer.poll(Duration.ofMillis(1500))
+        then: 'poll returns one record and close kafkaConsumer'
+            assert records.size() == 1
+            def record = records.iterator().next()
+            kafkaConsumer.close()
+        and: 'the record value matches the expected event value'
+            def expectedValue = objectMapper.writeValueAsString(subscriptionEventResponse)
+            assert expectedValue == record.value
+            assert eventKey == record.key
+        where: 'given #scenario'
+            scenario                   | subscriptionAcceptanceType                 | subscriptionStatusCode | subscriptionStatusMessage
+            'Subscription is Accepted' | CmNotificationSubscriptionStatus.ACCEPTED  | '1'                    | 'ACCEPTED'
+            'Subscription is Rejected' | CmNotificationSubscriptionStatus.REJECTED  | '104'                    | 'REJECTED'
+    }
+
+    def 'Consume valid message.'() {
+        given: 'an event'
+            objectUnderTest.dmiName = testDmiName
+            def eventKey = UUID.randomUUID().toString()
+            def timestamp = new Timestamp(1679521929511)
+            def jsonData = TestUtils.getResourceFileContent('cmNotificationSubscriptionCreationEvent.json')
+            def subscriptionEvent = objectMapper.readValue(jsonData, CmNotificationSubscriptionDmiInEvent.class)
+            objectUnderTest.cmNotificationSubscriptionDmiOutTopic = testTopic
+            def cloudEvent = CloudEventBuilder.v1().withId(UUID.randomUUID().toString()).withSource(URI.create('test-ncmp-dmi'))
+                    .withType(subscriptionType)
+                    .withDataSchema(URI.create("urn:cps:" + CmNotificationSubscriptionDmiInEvent.class.getName() + ":1.0.0"))
+                    .withExtension("correlationid", eventKey)
+                    .withTime(OffsetDateTime.ofInstant(timestamp.toInstant(), ZoneId.of("UTC")))
+                    .withData(objectMapper.writeValueAsBytes(subscriptionEvent)).build()
+            def testEventSent = new ConsumerRecord<String, CloudEvent>('topic-name', 0, 0, eventKey, cloudEvent)
+        when: 'the valid event is consumed'
+            objectUnderTest.consumeCmNotificationSubscriptionDmiInEvent(testEventSent)
+        then: 'no exception is thrown'
+            noExceptionThrown()
+        where: 'given #scenario'
+            scenario                    | subscriptionType
+            'Subscription Create Event' | "subscriptionCreated"
+            'Subscription Delete Event' | "subscriptionDeleted"
+    }
+
+    def 'Consume invalid message.'() {
+        given: 'an invalid event body'
+            objectUnderTest.dmiName = testDmiName
+            def eventKey = UUID.randomUUID().toString()
+            def timestamp = new Timestamp(1679521929511)
+            def invalidJsonBody = "/////"
+            objectUnderTest.cmNotificationSubscriptionDmiOutTopic = testTopic
+            def cloudEvent = CloudEventBuilder.v1().withId(UUID.randomUUID().toString()).withSource(URI.create('test-ncmp-dmi'))
+                    .withType("subscriptionCreated")
+                    .withDataSchema(URI.create("urn:cps:org.onap.ncmp.dmi.cm.subscription:1.0.0"))
+                    .withTime(OffsetDateTime.ofInstant(timestamp.toInstant(), ZoneId.of("UTC")))
+                    .withExtension("correlationid", eventKey).withData(objectMapper.writeValueAsBytes(invalidJsonBody)).build()
+            def testEventSent = new ConsumerRecord<String, CloudEvent>('topic-name', 0, 0, eventKey, cloudEvent)
+        when: 'the invalid event is consumed'
+            objectUnderTest.consumeCmNotificationSubscriptionDmiInEvent(testEventSent)
+        then: 'exception is thrown and event is logged'
+            def loggingEvent = getLoggingEvent()
+            assert loggingEvent.level == Level.ERROR
+            assert loggingEvent.formattedMessage.contains('Unable to map cloud event to target event class type')
+    }
+
+    def getLoggingEvent() {
+        return logger.list[0]
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiOutEventToCloudEventMapperSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiOutEventToCloudEventMapperSpec.groovy
new file mode 100644
index 00000000..8ca629f1
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/cmsubscription/CmNotificationSubscriptionDmiOutEventToCloudEventMapperSpec.groovy
@@ -0,0 +1,69 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.cmsubscription
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import io.cloudevents.core.builder.CloudEventBuilder
+import org.onap.cps.ncmp.dmi.exception.CloudEventConstructionException
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.CmNotificationSubscriptionDmiOutEvent
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.dmi_to_ncmp.Data
+import org.spockframework.spring.SpringBean
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import spock.lang.Specification
+
+@SpringBootTest(classes = [ObjectMapper])
+class CmNotificationSubscriptionDmiOutEventToCloudEventMapperSpec extends Specification {
+
+    @Autowired
+    def objectMapper = new ObjectMapper()
+
+    @SpringBean
+    CmNotificationSubscriptionDmiOutEventToCloudEventMapper objectUnderTest = new CmNotificationSubscriptionDmiOutEventToCloudEventMapper()
+
+    def 'Convert a Cm Subscription DMI Out Event to CloudEvent successfully.'() {
+        given: 'a Cm Subscription DMI Out Event and an event key'
+            def dmiName = 'test-ncmp-dmi'
+            def correlationId = 'subscription1#test-ncmp-dmi'
+            def cmSubscriptionDmiOutEventData = new Data(statusCode: "1", statusMessage: "accepted")
+            def cmSubscriptionDmiOutEvent =
+                    new CmNotificationSubscriptionDmiOutEvent().withData(cmSubscriptionDmiOutEventData)
+        when: 'a Cm Subscription DMI Out Event is converted'
+            def result = objectUnderTest.toCloudEvent(cmSubscriptionDmiOutEvent, "subscriptionCreatedStatus", dmiName, correlationId)
+        then: 'Cm Subscription DMI Out Event is converted as expected'
+            def expectedCloudEvent = CloudEventBuilder.v1().withId(UUID.randomUUID().toString()).withSource(URI.create('test-ncmp-dmi'))
+                    .withType("subscriptionCreated")
+                    .withDataSchema(URI.create("urn:cps:" + CmNotificationSubscriptionDmiOutEvent.class.getName() + ":1.0.0"))
+                    .withExtension("correlationid", correlationId)
+                    .withData(objectMapper.writeValueAsBytes(cmSubscriptionDmiOutEvent)).build()
+            assert expectedCloudEvent.data == result.data
+    }
+
+    def 'Map the Cloud Event to data of the subscription event with null parameters causes an exception'() {
+        given: 'an empty subscription response event and event key'
+            def correlationId = 'subscription1#test-ncmp-dmi'
+            def cmSubscriptionDmiOutEvent = new CmNotificationSubscriptionDmiOutEvent()
+        when: 'the cm subscription dmi out Event map to data of cloud event'
+            objectUnderTest.toCloudEvent(cmSubscriptionDmiOutEvent, "subscriptionCreatedStatus", null , correlationId)
+        then: 'a run time exception is thrown'
+            thrown(CloudEventConstructionException)
+    }
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/mapper/CloudEventMapperSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/mapper/CloudEventMapperSpec.groovy
new file mode 100644
index 00000000..0b404776
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/notifications/mapper/CloudEventMapperSpec.groovy
@@ -0,0 +1,53 @@
+/*
+ * ============LICENSE_START========================================================
+ * Copyright (c) 2024 Nordix Foundation.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an 'AS IS' BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.notifications.mapper
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import io.cloudevents.core.builder.CloudEventBuilder
+import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.client_to_ncmp.CmNotificationSubscriptionNcmpInEvent
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import spock.lang.Specification
+
+@SpringBootTest(classes = [ObjectMapper])
+class CloudEventMapperSpec extends Specification {
+
+    @Autowired
+    ObjectMapper objectMapper
+
+    def 'Cloud event to Target event type when it is #scenario'() {
+        expect: 'Events mapped correctly'
+            assert mappedCloudEvent == (CloudEventMapper.toTargetEvent(testCloudEvent(), targetClass) != null)
+        where: 'below are the scenarios'
+            scenario                | targetClass                                   || mappedCloudEvent
+            'valid concrete type'   | CmNotificationSubscriptionNcmpInEvent.class   || true
+            'invalid concrete type' | ArrayList.class                               || false
+    }
+
+    def testCloudEvent() {
+        return CloudEventBuilder.v1().withData(objectMapper.writeValueAsBytes(new CmNotificationSubscriptionNcmpInEvent()))
+                .withId("cmhandle1")
+                .withSource(URI.create('test-source'))
+                .withDataSchema(URI.create('test'))
+                .withType('org.onap.cm.events.cm-subscription')
+                .build()
+    }
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/ControllerSecuritySpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/ControllerSecuritySpec.groovy
new file mode 100644
index 00000000..3f5d4a80
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/ControllerSecuritySpec.groovy
@@ -0,0 +1,76 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.rest.controller
+
+import org.onap.cps.ncmp.dmi.config.WebSecurityConfig
+import org.springframework.context.annotation.Import
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
+import org.springframework.http.HttpStatus
+import org.springframework.test.web.servlet.MockMvc
+import spock.lang.Specification
+
+@WebMvcTest(controllers = TestController.class)
+@Import(WebSecurityConfig)
+class ControllerSecuritySpec extends Specification {
+
+    @Autowired
+    MockMvc mvc
+
+    def testEndpoint = '/test'
+
+    def 'Get request with valid authentication'() {
+        when: 'request is sent with authentication'
+            def response = mvc.perform(
+                    get(testEndpoint).header("Authorization", 'Basic Y3BzdXNlcjpjcHNyMGNrcyE=')
+            ).andReturn().response
+        then: 'HTTP OK status code is returned'
+            assert response.status == HttpStatus.OK.value()
+    }
+
+    def 'Get request without authentication'() {
+        when: 'request is sent without authentication'
+            def response = mvc.perform(get(testEndpoint)).andReturn().response
+        then: 'HTTP Unauthorized status code is returned'
+            assert response.status == HttpStatus.UNAUTHORIZED.value()
+    }
+
+    def 'Get request with invalid authentication'() {
+        when: 'request is sent with invalid authentication'
+            def response = mvc.perform(
+                    get(testEndpoint).header("Authorization", 'Basic invalid auth')
+            ).andReturn().response
+        then: 'HTTP Unauthorized status code is returned'
+            assert response.status == HttpStatus.UNAUTHORIZED.value()
+    }
+
+    def 'Security Config #scenario permit URIs'() {
+        expect: 'can create a web security configuration'
+            new WebSecurityConfig(permitUris,'user','password')
+        where: 'the following string of permit URIs is provided'
+            scenario  | permitUris
+            'with'    | 'a,b'
+            'without' | ''
+    }
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy
new file mode 100644
index 00000000..a519de7b
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy
@@ -0,0 +1,406 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2023 Nordix Foundation
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.rest.controller
+
+
+import ch.qos.logback.classic.Logger
+import ch.qos.logback.classic.spi.ILoggingEvent
+import ch.qos.logback.core.read.ListAppender
+import org.onap.cps.ncmp.dmi.TestUtils
+import org.onap.cps.ncmp.dmi.config.WebSecurityConfig
+import org.onap.cps.ncmp.dmi.exception.DmiException
+import org.onap.cps.ncmp.dmi.exception.ModuleResourceNotFoundException
+import org.onap.cps.ncmp.dmi.exception.ModulesNotFoundException
+import org.onap.cps.ncmp.dmi.model.ModuleSet
+import org.onap.cps.ncmp.dmi.model.ModuleSetSchemasInner
+import org.onap.cps.ncmp.dmi.model.YangResource
+import org.onap.cps.ncmp.dmi.model.YangResources
+import org.onap.cps.ncmp.dmi.notifications.async.AsyncTaskExecutor
+import org.onap.cps.ncmp.dmi.notifications.async.DmiAsyncRequestResponseEventProducer
+import org.onap.cps.ncmp.dmi.service.DmiService
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference
+import org.slf4j.LoggerFactory
+import org.spockframework.spring.SpringBean
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
+import org.springframework.context.annotation.Import
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import org.springframework.kafka.core.KafkaTemplate
+import org.springframework.security.test.context.support.WithMockUser
+import org.springframework.test.web.servlet.MockMvc
+import spock.lang.Specification
+
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.CREATE
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.DELETE
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.PATCH
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.READ
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.UPDATE
+import static org.springframework.http.HttpStatus.BAD_REQUEST
+import static org.springframework.http.HttpStatus.CREATED
+import static org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR
+import static org.springframework.http.HttpStatus.NO_CONTENT
+import static org.springframework.http.HttpStatus.OK
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post
+
+@Import(WebSecurityConfig)
+@WebMvcTest(DmiRestController.class)
+@WithMockUser
+class DmiRestControllerSpec extends Specification {
+
+    @Autowired
+    private MockMvc mvc
+
+    @SpringBean
+    DmiService mockDmiService = Mock()
+
+    @SpringBean
+    DmiAsyncRequestResponseEventProducer cpsAsyncRequestResponseEventProducer = new DmiAsyncRequestResponseEventProducer(Mock(KafkaTemplate))
+
+    @SpringBean
+    AsyncTaskExecutor asyncTaskExecutor = new AsyncTaskExecutor(cpsAsyncRequestResponseEventProducer)
+
+    def logger = Spy(ListAppender<ILoggingEvent>)
+
+    void setup() {
+        ((Logger) LoggerFactory.getLogger(DmiRestController.class)).addAppender(logger)
+        logger.start()
+    }
+
+    void cleanup() {
+        ((Logger) LoggerFactory.getLogger(DmiRestController.class)).detachAndStopAllAppenders()
+    }
+
+    @Value('${rest.api.dmi-base-path}/v1')
+    def basePathV1
+
+    def 'Get all modules.'() {
+        given: 'URL for getting all modules and some request data'
+            def getModuleUrl = "$basePathV1/ch/node1/modules"
+            def someValidJson = '{}'
+        and: 'DMI service returns some module'
+            def moduleSetSchema = new ModuleSetSchemasInner(namespace:'some-namespace',
+                    moduleName:'some-moduleName',
+                    revision:'some-revision')
+            def moduleSetSchemasList = [moduleSetSchema] as List<ModuleSetSchemasInner>
+            def moduleSet = new ModuleSet()
+            moduleSet.schemas(moduleSetSchemasList)
+            mockDmiService.getModulesForCmHandle('node1') >> moduleSet
+        when: 'the request is posted'
+            def response = mvc.perform(post(getModuleUrl)
+                    .contentType(MediaType.APPLICATION_JSON).content(someValidJson))
+                    .andReturn().response
+        then: 'status is OK'
+            response.status == OK.value()
+        and: 'the response content matches the result from the DMI service'
+            response.getContentAsString() == '{"schemas":[{"moduleName":"some-moduleName","revision":"some-revision","namespace":"some-namespace"}]}'
+    }
+
+    def 'Get all modules with exception handling of #scenario.'() {
+        given: 'URL for getting all modules and some request data'
+            def getModuleUrl = "$basePathV1/ch/node1/modules"
+            def someValidJson = '{}'
+        and: 'a #exception is thrown during the process'
+            mockDmiService.getModulesForCmHandle('node1') >> { throw exception }
+        when: 'the request is posted'
+            def response = mvc.perform( post(getModuleUrl)
+                    .contentType(MediaType.APPLICATION_JSON).content(someValidJson))
+                    .andReturn().response
+        then: 'response status is #expectedResponse'
+            response.status == expectedResponse.value()
+        where: 'the scenario is #scenario'
+            scenario                       | exception                                        || expectedResponse
+            'dmi service exception'        | new DmiException('','')                          || HttpStatus.INTERNAL_SERVER_ERROR
+            'no modules found'             | new ModulesNotFoundException('','')              || HttpStatus.NOT_FOUND
+            'any other runtime exception'  | new RuntimeException()                           || HttpStatus.INTERNAL_SERVER_ERROR
+            'runtime exception with cause' | new RuntimeException('', new RuntimeException()) || HttpStatus.INTERNAL_SERVER_ERROR
+    }
+
+    def 'Register given list.'() {
+        given: 'register cm handle url and cmHandles'
+            def registerCmhandlesPost = "${basePathV1}/inventory/cmHandles"
+            def cmHandleJson = '{"cmHandles":["node1", "node2"]}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(registerCmhandlesPost)
+                            .contentType(MediaType.APPLICATION_JSON)
+                            .content(cmHandleJson)
+            ).andReturn().response
+        then: 'register cm handles in dmi service is invoked with correct parameters'
+            1 * mockDmiService.registerCmHandles(_ as List<String>)
+        and: 'response status is created'
+            response.status == CREATED.value()
+    }
+
+    def 'register cm handles called with empty content.'() {
+        given: 'register cm handle url and empty json'
+            def registerCmhandlesPost = "${basePathV1}/inventory/cmHandles"
+            def emptyJson = '{"cmHandles":[]}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(registerCmhandlesPost).contentType(MediaType.APPLICATION_JSON)
+                            .content(emptyJson)
+            ).andReturn().response
+        then: 'response status is "bad request"'
+            response.status == BAD_REQUEST.value()
+        and: 'dmi service is not called'
+            0 * mockDmiService.registerCmHandles(_)
+    }
+
+    def 'Retrieve module resources.'() {
+        given: 'URL to get module resources'
+            def getModulesEndpoint = "$basePathV1/ch/some-cm-handle/moduleResources"
+        and: 'request data to get some modules'
+            String jsonData = TestUtils.getResourceFileContent('moduleResources.json')
+        and: 'the DMI service returns the yang resources'
+            ModuleReference moduleReference1 = new ModuleReference(name: 'ietf-yang-library', revision: '2016-06-21')
+            ModuleReference moduleReference2 = new ModuleReference(name: 'nc-notifications', revision: '2008-07-14')
+            def moduleReferences = [moduleReference1, moduleReference2]
+            def yangResources = new YangResources()
+            def yangResource = new YangResource(yangSource: '"some-data"', moduleName: 'NAME', revision: 'REVISION')
+            yangResources.add(yangResource)
+            mockDmiService.getModuleResources('some-cm-handle', moduleReferences) >> yangResources
+        when: 'the request is posted'
+            def response = mvc.perform(post(getModulesEndpoint)
+                    .contentType(MediaType.APPLICATION_JSON)
+                    .content(jsonData)).andReturn().response
+        then: 'a OK status is returned'
+            response.status == OK.value()
+        and: 'the response content matches the result from the DMI service'
+            response.getContentAsString() == '[{"yangSource":"\\"some-data\\"","moduleName":"NAME","revision":"REVISION"}]'
+    }
+
+    def 'Retrieve module resources with exception handling.'() {
+        given: 'URL to get module resources'
+            def getModulesEndpoint = "$basePathV1/ch/some-cm-handle/moduleResources"
+        and: 'request data to get some modules'
+            String jsonData = TestUtils.getResourceFileContent('moduleResources.json')
+        and: 'the system throws a not-found exception (during the processing)'
+            mockDmiService.getModuleResources('some-cm-handle', _) >> { throw Mock(ModuleResourceNotFoundException.class) }
+        when: 'the request is posted'
+            def response = mvc.perform(post(getModulesEndpoint)
+                    .contentType(MediaType.APPLICATION_JSON)
+                    .content(jsonData)).andReturn().response
+        then: 'a not found status is returned'
+            response.status == HttpStatus.NOT_FOUND.value()
+    }
+
+    def 'Retrieve module resources and ensure module set tag is logged.'() {
+        given: 'URL to get module resources'
+            def getModulesEndpoint = "$basePathV1/ch/some-cm-handle/moduleResources"
+        and: 'request data to get some modules'
+            String jsonData = TestUtils.getResourceFileContent('moduleResources.json')
+        and: 'the DMI service returns the yang resources'
+            def moduleReferences = []
+            def yangResources = new YangResources()
+            def yangResource = new YangResource()
+            yangResources.add(yangResource)
+            mockDmiService.getModuleResources('some-cm-handle', moduleReferences) >> yangResources
+        when: 'the request is posted'
+            mvc.perform(post(getModulesEndpoint)
+                .contentType(MediaType.APPLICATION_JSON)
+                .content(jsonData))
+        then: 'the module set tag is logged'
+            def loggingMessage = getLoggingMessage(0)
+            assert loggingMessage.contains('module-set-tag1')
+    }
+
+    def 'Get resource data for pass-through operational.'() {
+        given: 'Get resource data url and some request data'
+            def getResourceDataForCmHandleUrl = "${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:passthrough-operational" +
+                    "?resourceIdentifier=parent/child&options=(fields=myfields,depth=5)"
+            def someValidJson = '{}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(getResourceDataForCmHandleUrl).contentType(MediaType.APPLICATION_JSON).content(someValidJson)
+            ).andReturn().response
+        then: 'response status is ok'
+            response.status == OK.value()
+        and: 'dmi service method to get resource data is invoked once'
+            1 * mockDmiService.getResourceData('some-cmHandle',
+                    'parent/child',
+                    '(fields=myfields,depth=5)',
+                    'content=all')
+    }
+
+    def 'Get resource data for pass-through operational with write request (invalid).'() {
+        given: 'Get resource data url'
+            def getResourceDataForCmHandleUrl = "${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:passthrough-operational" +
+                    "?resourceIdentifier=parent/child&options=(fields=myfields,depth=5)"
+        and: 'an invalid write request data for "create" operation'
+            def jsonData = '{"operation":"create"}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(getResourceDataForCmHandleUrl).contentType(MediaType.APPLICATION_JSON).content(jsonData)
+            ).andReturn().response
+        then: 'response status is bad request'
+            response.status == BAD_REQUEST.value()
+        and: 'dmi service is not invoked'
+            0 * mockDmiService.getResourceData(*_)
+    }
+
+    def 'Get resource data for invalid datastore'() {
+        given: 'Get resource data url'
+            def getResourceDataForCmHandleUrl = "${basePathV1}/ch/some-cmHandle/data/ds/dummy-datastore" +
+                "?resourceIdentifier=parent/child&options=(fields=myfields,depth=5)"
+        and: 'an invalid write request data for "create" operation'
+            def jsonData = '{"operation":"create"}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                post(getResourceDataForCmHandleUrl).contentType(MediaType.APPLICATION_JSON).content(jsonData)
+            ).andReturn().response
+        then: 'response status is internal server error'
+            response.status == INTERNAL_SERVER_ERROR.value()
+        and: 'response contains expected error message'
+            response.contentAsString.contains('dummy-datastore is an invalid datastore name')
+    }
+
+    def 'data with #scenario operation using passthrough running.'() {
+        given: 'write data for passthrough running url'
+            def writeDataForPassthroughRunning = "${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:passthrough-running" +
+                    "?resourceIdentifier=some-resourceIdentifier"
+        and: 'request data for #scenario'
+            def jsonData = TestUtils.getResourceFileContent(requestBodyFile)
+        and: 'dmi service is called'
+            mockDmiService.writeData(operationEnum, 'some-cmHandle',
+                    'some-resourceIdentifier', dataType,
+                    'normal request body' ) >> '{some-json}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(writeDataForPassthroughRunning).contentType(MediaType.APPLICATION_JSON)
+                            .content(jsonData)
+            ).andReturn().response
+        then: 'response status is #expectedResponseStatus'
+            response.status == expectedResponseStatus
+        and: 'the response content matches the result from the DMI service'
+            response.getContentAsString() == expectedJsonResponse
+        where: 'given request body and data'
+            scenario   | requestBodyFile                 | operationEnum     | dataType                      || expectedResponseStatus | expectedJsonResponse
+            'Create'   | 'createDataWithNormalChar.json' | CREATE            | 'application/json'            || CREATED.value()        | '{some-json}'
+            'Update'   | 'updateData.json'               | UPDATE            | 'application/json'            || OK.value()             | '{some-json}'
+            'Delete'   | 'deleteData.json'               | DELETE            | 'application/json'            || NO_CONTENT.value()     | '{some-json}'
+            'Read'     | 'readData.json'                 | READ              | 'application/json'            || OK.value()             | ''
+            'Patch'    | 'patchData.json'                | PATCH             | 'application/yang.patch+json' || OK.value()             | '{some-json}'
+    }
+
+    def 'Create data using passthrough for special characters.'(){
+        given: 'create data for cmHandle url'
+            def writeDataForCmHandlePassthroughRunning = "${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:passthrough-running" +
+                    "?resourceIdentifier=some-resourceIdentifier"
+        and: 'request data with special characters'
+            def jsonData = TestUtils.getResourceFileContent('createDataWithSpecialChar.json')
+        and: 'dmi service returns data'
+            mockDmiService.writeData(CREATE, 'some-cmHandle', 'some-resourceIdentifier', 'application/json',
+                    'data with quote \" and new line \n') >> '{some-json}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(writeDataForCmHandlePassthroughRunning).contentType(MediaType.APPLICATION_JSON).content(jsonData)
+            ).andReturn().response
+        then: 'response status is CREATED'
+            response.status == CREATED.value()
+        and: 'the response content matches the result from the DMI service'
+            response.getContentAsString() == '{some-json}'
+    }
+
+    def 'PassThrough Returns OK when topic is used for async'(){
+        given: 'Passthrough read URL and request data  with a topic (parameter)'
+            def readPassThroughUrl ="${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:" +
+                    resourceIdentifier +
+                    '?resourceIdentifier=some-resourceIdentifier&topic=test-topic'
+            def jsonData = TestUtils.getResourceFileContent('readData.json')
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(readPassThroughUrl).contentType(MediaType.APPLICATION_JSON).content(jsonData)
+            ).andReturn().response
+        then: 'response status is OK'
+            assert response.status == HttpStatus.NO_CONTENT.value()
+        where: 'the following values are used'
+            resourceIdentifier << ['passthrough-operational', 'passthrough-running']
+    }
+
+    def 'PassThrough logs module set tag'(){
+        given: 'Passthrough read URL and request data with a module set tag (parameter)'
+            def readPassThroughUrl ="${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:" +
+                'passthrough-running?resourceIdentifier=some-resourceIdentifier'
+            def jsonData = TestUtils.getResourceFileContent('readData.json')
+        when: 'the request is posted'
+            mvc.perform(
+                post(readPassThroughUrl).contentType(MediaType.APPLICATION_JSON).content(jsonData))
+        then: 'response status is OK'
+            def loggingMessage = getLoggingMessage(0)
+            assert loggingMessage.contains('module-set-tag-example')
+    }
+
+    def 'Get resource data for pass-through running with #scenario value in resource identifier param.'() {
+        given: 'Get resource data url'
+            def getResourceDataForCmHandleUrl = "${basePathV1}/ch/some-cmHandle/data/ds/ncmp-datastore:passthrough-running" +
+                    "?resourceIdentifier="+resourceIdentifier+"&options=(fields=myfields,depth=5)"
+        and: 'some valid json data'
+            def json = '{"cmHandleProperties" : { "prop1" : "value1", "prop2" : "value2"}}'
+        when: 'the request is posted'
+            def response = mvc.perform(
+                    post(getResourceDataForCmHandleUrl).contentType(MediaType.APPLICATION_JSON).content(json)
+            ).andReturn().response
+        then: 'response status is ok'
+            response.status == OK.value()
+        and: 'dmi service method to get resource data is invoked once with correct parameters'
+            1 * mockDmiService.getResourceData('some-cmHandle',
+                    resourceIdentifier,
+                    '(fields=myfields,depth=5)',
+                    'content=config')
+        where: 'tokens are used in the resource identifier parameter'
+            scenario                       | resourceIdentifier
+            '/'                            | 'id/with/slashes'
+            '?'                            | 'idWith?'
+            ','                            | 'idWith,'
+            '='                            | 'idWith='
+            '[]'                           | 'idWith[]'
+            '? needs to be encoded as %3F' | 'idWith%3F'
+
+    }
+
+    def 'Execute a data operation for a list of operations.'() {
+        given: 'an endpoint for a data operation request with list of cmhandles in request body'
+            def resourceDataUrl = "$basePathV1/data?topic=client-topic-name&requestId=some-requestId"
+        and: 'list of operation details are received into request body'
+            def dataOperationRequestBody = '[{"operation": "read", "operationId": "14", "datastore": "ncmp-datastore:passthrough-operational", "options": "some options", "resourceIdentifier": "some resourceIdentifier",' +
+                '"cmHandles": [ {"id": "cmHandle123", "moduleSetTag": "module-set-tag1", "cmHandleProperties": { "myProp`": "some value", "otherProp": "other value"}}]}]'
+        when: 'the dmi resource data for dataOperation api is called.'
+            def response = mvc.perform(
+                post(resourceDataUrl).contentType(MediaType.APPLICATION_JSON).content(dataOperationRequestBody)
+            ).andReturn().response
+        then: 'the resource data operation endpoint returns the not implemented response'
+            assert response.status == 501
+        and: 'the job details are correctly received (logged)'
+            assert getLoggingMessage(1).contains('some-requestId')
+            assert getLoggingMessage(2).contains('client-topic-name')
+            assert getLoggingMessage(4).contains('some resourceIdentifier')
+            assert getLoggingMessage(5).contains('module-set-tag1')
+        and: 'the operation Id is correctly received (logged)'
+            assert getLoggingMessage(6).contains('14')
+    }
+
+    def getLoggingMessage(int index) {
+        return logger.list[index].formattedMessage
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy
new file mode 100644
index 00000000..8531d35f
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy
@@ -0,0 +1,273 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2022 Nordix Foundation
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service
+
+import com.fasterxml.jackson.core.JsonProcessingException
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.databind.ObjectWriter
+import org.onap.cps.ncmp.dmi.config.DmiPluginConfig
+import org.onap.cps.ncmp.dmi.exception.CmHandleRegistrationException
+import org.onap.cps.ncmp.dmi.exception.DmiException
+import org.onap.cps.ncmp.dmi.exception.ModuleResourceNotFoundException
+import org.onap.cps.ncmp.dmi.exception.ModulesNotFoundException
+import org.onap.cps.ncmp.dmi.exception.HttpClientRequestException
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference
+import org.onap.cps.ncmp.dmi.model.YangResource
+import org.onap.cps.ncmp.dmi.model.YangResources
+import org.onap.cps.ncmp.dmi.service.client.NcmpRestClient
+import org.onap.cps.ncmp.dmi.service.model.ModuleSchema
+import org.onap.cps.ncmp.dmi.service.operation.SdncOperations
+import org.springframework.http.HttpStatus
+import org.springframework.http.ResponseEntity
+import spock.lang.Specification
+
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.CREATE
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.UPDATE
+
+class DmiServiceImplSpec extends Specification {
+
+
+    def mockNcmpRestClient = Mock(NcmpRestClient)
+    def mockDmiPluginProperties = Mock(DmiPluginConfig.DmiPluginProperties)
+    def spyObjectMapper = Spy(ObjectMapper)
+    def mockObjectMapper = Mock(ObjectMapper)
+    def mockSdncOperations = Mock(SdncOperations)
+    def objectUnderTest = new DmiServiceImpl(mockDmiPluginProperties, mockNcmpRestClient, mockSdncOperations, spyObjectMapper)
+
+    def 'Register cm handles with ncmp.'() {
+        given: 'some cm-handle ids'
+            def givenCmHandlesList = ['node1', 'node2']
+        and: 'json payload'
+            def expectedJson = '{"dmiPlugin":"test-dmi-service","createdCmHandles":[{"cmHandle":"node1"},{"cmHandle":"node2"}]}'
+        and: 'process returns "test-dmi-service" for service name'
+            mockDmiPluginProperties.getDmiServiceUrl() >> 'test-dmi-service'
+        when: 'the cm handles are registered'
+            objectUnderTest.registerCmHandles(givenCmHandlesList)
+        then: 'register cm handle with ncmp is called with the expected json and return "created" status'
+            1 * mockNcmpRestClient.registerCmHandlesWithNcmp(expectedJson) >> new ResponseEntity<>(HttpStatus.CREATED)
+    }
+
+    def 'Register cm handles with ncmp called with exception #scenario.'() {
+        given: 'some cm-handle ids'
+            def cmHandlesList = ['node1', 'node2']
+        and: 'process returns "test-dmi-service" for service name'
+            mockDmiPluginProperties.getDmiServiceUrl() >> 'test-dmi-service'
+        and: 'returns #responseEntity'
+            mockNcmpRestClient.registerCmHandlesWithNcmp(_ as String) >> responseEntity
+        when: 'the cm handles are registered'
+            objectUnderTest.registerCmHandles(cmHandlesList)
+        then: 'a registration exception is thrown'
+            thrown(CmHandleRegistrationException.class)
+        where: 'given #scenario'
+            scenario                                         | responseEntity
+            'ncmp rest client returns bad request'           | new ResponseEntity<>(HttpStatus.BAD_REQUEST)
+            'ncmp rest client returns internal server error' | new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR)
+    }
+
+    def 'Register cm handles with ncmp with wrong data.'() {
+        given: 'some cm-handle ids'
+            def cmHandlesList = ['node1', 'node2']
+        and: ' "JsonProcessingException" occurs during parsing'
+            objectUnderTest.objectMapper = mockObjectMapper
+            mockObjectMapper.writeValueAsString(_) >> { throw new JsonProcessingException('some error.') }
+        when: 'the cmHandles are registered'
+            objectUnderTest.registerCmHandles(cmHandlesList)
+        then: 'a dmi exception is thrown'
+            thrown(DmiException.class)
+    }
+
+    def ' Get modules for a cm-handle.'() {
+        given: 'a cm handle'
+            def cmHandle = 'node1'
+        and: 'process returns one module schema for the cmhandle'
+            def moduleSchema = new ModuleSchema(
+                    identifier: "example-identifier",
+                    namespace: "example:namespace",
+                    version: "example-version")
+            mockSdncOperations.getModuleSchemasFromNode(cmHandle) >> List.of(moduleSchema)
+        when: 'modules for cmHandle is requested'
+            def result = objectUnderTest.getModulesForCmHandle(cmHandle)
+        then: 'one module is returned'
+            result.schemas.size() == 1
+        and: 'module has expected values'
+            with(result.schemas[0]) {
+                it.getRevision() == moduleSchema.getVersion()
+                it.getModuleName() == moduleSchema.getIdentifier()
+                it.getNamespace() == moduleSchema.getNamespace();
+            }
+    }
+
+    def 'no modules found for the cmhandle.'() {
+        given: 'cm handle id'
+            def cmHandle = 'node1'
+        and: 'process returns no modules'
+            mockSdncOperations.getModuleSchemasFromNode(cmHandle) >> Collections.emptyList();
+        when: 'modules for cm-handle is requested'
+            objectUnderTest.getModulesForCmHandle(cmHandle)
+        then: 'module not found exception is thrown'
+            thrown(ModulesNotFoundException)
+    }
+
+    def 'Get multiple module resources.'() {
+        given: 'a cmHandle'
+            def cmHandle = 'some-cmHandle'
+        and: 'multiple module references'
+            def moduleReference1 = new ModuleReference(name: 'name-1', revision: 'revision-1')
+            def moduleReference2 = new ModuleReference(name: 'name-2', revision: 'revision-2')
+            def moduleList = [moduleReference1, moduleReference2]
+        when: 'module resources is requested'
+            def result = objectUnderTest.getModuleResources(cmHandle, moduleList)
+        then: 'SDNC operation service is called same number of module references given'
+            2 * mockSdncOperations.getModuleResource(cmHandle, _) >>> [new ResponseEntity<String>('{"ietf-netconf-monitoring:output": {"data": "some-data1"}}', HttpStatus.OK),
+                                                                       new ResponseEntity<String>('{"ietf-netconf-monitoring:output": {"data": "some-data2"}}', HttpStatus.OK)]
+        and: 'the result contains the expected properties'
+            def yangResources = new YangResources()
+            def yangResource1 = new YangResource(yangSource: 'some-data1', moduleName: 'name-1', revision: 'revision-1')
+            def yangResource2 = new YangResource(yangSource: 'some-data2', moduleName: 'name-2', revision: 'revision-2')
+            yangResources.add(yangResource1)
+            yangResources.add(yangResource2)
+            assert result == yangResources
+    }
+
+    def 'Get a module resource with module resource not found exception for #scenario.'() {
+        given: 'a cmHandle and module reference list'
+            def cmHandle = 'some-cmHandle'
+            def moduleReference = new ModuleReference(name: 'NAME', revision: 'REVISION')
+            def moduleList = [moduleReference]
+        when: 'module resources is requested'
+            objectUnderTest.getModuleResources(cmHandle, moduleList)
+        then: 'SDNC operation service is called once with a response body that contains no data'
+            1 * mockSdncOperations.getModuleResource(cmHandle, _) >> new ResponseEntity<String>(responseBody, HttpStatus.OK)
+        and: 'an exception is thrown'
+            thrown(ModuleResourceNotFoundException)
+        where: 'the following values are returned'
+            scenario                                                              | responseBody
+            'a response body containing no data object'                           | '{"ietf-netconf-monitoring:output": {"null": "some-data"}}'
+            'a response body containing no ietf-netconf-monitoring:output object' | '{"null": {"data": "some-data"}}'
+    }
+
+    def 'Get module resources when sdnc returns #scenario response.'() {
+        given: 'sdnc returns a #scenario response'
+            mockSdncOperations.getModuleResource(_ as String, _ as String) >> new ResponseEntity<String>('some-response-body', httpStatus)
+        when: 'module resources is requested'
+            objectUnderTest.getModuleResources('some-cmHandle', [new ModuleReference()] as LinkedList<ModuleReference>)
+        then: '#expectedException is thrown'
+            thrown(expectedException)
+        where: 'the following values are returned'
+            scenario                | httpStatus                       || expectedException
+            'not found'             | HttpStatus.NOT_FOUND             || ModuleResourceNotFoundException
+            'internal server error' | HttpStatus.INTERNAL_SERVER_ERROR || DmiException
+    }
+
+    def 'Get module resources with JSON processing exception.'() {
+        given: 'a json processing exception during process'
+            def mockObjectWriter = Mock(ObjectWriter)
+            spyObjectMapper.writer() >> mockObjectWriter
+            mockObjectWriter.withRootName(_) >> mockObjectWriter
+            def jsonProcessingException = new JsonProcessingException('')
+            mockObjectWriter.writeValueAsString(_) >> { throw jsonProcessingException }
+        when: 'module resources is requested'
+            objectUnderTest.getModuleResources('some-cmHandle', [new ModuleReference()] as LinkedList<ModuleReference>)
+        then: 'an exception is thrown'
+            def thrownException = thrown(DmiException.class)
+        and: 'the exception has the expected message and details'
+            thrownException.message == 'Unable to process JSON.'
+            thrownException.details == 'JSON exception occurred when creating the module request.'
+        and: 'the cause is the original json processing exception'
+            thrownException.cause == jsonProcessingException
+    }
+
+    def 'Get resource data for passthrough operational.'() {
+        given: 'sdnc operation returns OK response'
+            mockSdncOperations.getResouceDataForOperationalAndRunning(
+                    'someCmHandle',
+                    'someResourceId',
+                    '(fields=x/y/z,depth=10,test=abc)',
+                    'content=all') >> new ResponseEntity<>('response json', HttpStatus.OK)
+        when: 'resource data is requested'
+            def response = objectUnderTest.getResourceData(
+                    'someCmHandle',
+                    'someResourceId',
+                    '(fields=x/y/z,depth=10,test=abc)',
+                    'content=all')
+        then: 'response matches the response returned from the SDNC service'
+            response == 'response json'
+    }
+
+    def 'Get resource data with not found exception.'() {
+        given: 'sdnc operation returns "NOT_FOUND" response'
+            mockSdncOperations.getResouceDataForOperationalAndRunning(*_) >> new ResponseEntity<>(HttpStatus.NOT_FOUND)
+        when: 'resource data is requested'
+            objectUnderTest.getResourceData('someCmHandle', 'someResourceId',
+                    '(fields=x/y/z,depth=10,test=abc)', 'content=config')
+        then: 'http client request exception'
+            thrown(HttpClientRequestException.class)
+    }
+
+    def 'Get resource data for passthrough running.'() {
+        given: 'sdnc operation returns OK response'
+            mockSdncOperations.getResouceDataForOperationalAndRunning(*_) >> new ResponseEntity<>('response json', HttpStatus.OK)
+        when: 'resource data is requested'
+            def response = objectUnderTest.getResourceData(
+                    'someCmHandle',
+                    'someResourceId',
+                    '(fields=x/y/z,depth=10,test=abc)',
+                    'content=config')
+        then: 'response have expected json'
+            response == 'response json'
+    }
+
+    def 'Write resource data for passthrough running with a #scenario from sdnc.'() {
+        given: 'sdnc returns a response with #scenario'
+            mockSdncOperations.writeData(operationEnum, _, _, _, _) >> new ResponseEntity<String>('response json', httpResponse)
+        when: 'resource data is written to sdnc'
+            def response = objectUnderTest.writeData(operationEnum, 'some-cmHandle',
+                    'some-resourceIdentifier', 'some-dataType', '{some-data}')
+        then: 'the response matches the expected data'
+            response == 'response json'
+        where: 'the following values are used'
+            scenario                              | httpResponse       | operationEnum
+            '200 OK with an update operation'     | HttpStatus.OK      | UPDATE
+            '201 CREATED with a create operation' | HttpStatus.CREATED | CREATE
+    }
+
+    def 'Write resource data with special characters.'() {
+        given: 'sdnc returns a created response'
+            mockSdncOperations.writeData(CREATE, 'some-cmHandle',
+                    'some-resourceIdentifier', 'some-dataType', 'data with quote " and \n new line') >> new ResponseEntity<String>('response json', HttpStatus.CREATED)
+        when: 'resource data is written to sdnc'
+            def response = objectUnderTest.writeData(CREATE, 'some-cmHandle',
+                    'some-resourceIdentifier', 'some-dataType', 'data with quote " and \n new line')
+        then: 'the response matches the expected data'
+            response == 'response json'
+    }
+
+    def 'Write resource data for passthrough running with a 500 response from sdnc.'() {
+        given: 'sdnc returns internal server error response'
+            mockSdncOperations.writeData(CREATE, _, _, _, _) >> new ResponseEntity<String>('response json', HttpStatus.INTERNAL_SERVER_ERROR)
+        when: 'resource data is written to sdnc'
+            objectUnderTest.writeData(CREATE, 'some-cmHandle',
+                    'some-resourceIdentifier', 'some-dataType', _ as String)
+        then: 'a dmi exception is thrown'
+            thrown(DmiException.class)
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/YangResourceExtractorSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/YangResourceExtractorSpec.groovy
new file mode 100644
index 00000000..656cfcb5
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/YangResourceExtractorSpec.groovy
@@ -0,0 +1,98 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service
+
+import com.google.gson.JsonSyntaxException
+import org.onap.cps.ncmp.dmi.exception.ModuleResourceNotFoundException
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference
+import org.springframework.http.ResponseEntity
+import spock.lang.Specification
+
+class YangResourceExtractorSpec extends Specification {
+
+    static def BACK_SLASH = '\\';
+    static def NEW_LINE = '\n';
+    static def QUOTE = '"';
+    static def TAB = '\t';
+
+    static def YANG_ESCAPED_NEW_LINE = '\\n'
+    static def YANG_ESCAPED_BACK_SLASH = '\\\\'
+    static def YANG_ESCAPED_QUOTE = '\\"'
+    static def YANG_ESCAPED_TAB = '\\t'
+
+    static def SDNC_OUTPUT_JSON_NAME = '"ietf-netconf-monitoring:output"'
+
+    def moduleReference = new ModuleReference(name: 'test', revision: 'rev')
+    def responseEntity = Mock(ResponseEntity)
+
+    def 'Extract yang resource with escaped characters in the source.'() {
+        given: 'a response entity with a data field of value #jsonValue'
+            responseEntity.getBody() >> '{' + SDNC_OUTPUT_JSON_NAME + ': { "data": "' + jsonValue + '" }}'
+        when: 'the yang resource is extracted'
+            def result = YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+        then: 'the yang source string is as expected'
+            result.getYangSource() == expectedString
+        where: 'the following data is used'
+            jsonValue                                 || expectedString
+            'line1' + YANG_ESCAPED_NEW_LINE + 'line2' || 'line1' + NEW_LINE + 'line2'
+            'a' + YANG_ESCAPED_BACK_SLASH+'b'         || 'a'+BACK_SLASH +'b'
+            'a' + YANG_ESCAPED_QUOTE + 'b'            || 'a'+QUOTE+'b'
+            'a' + YANG_ESCAPED_TAB + 'b'              || 'a'+TAB+'b'
+    }
+
+    def 'Extract yang resource with escaped characters in the source inside escaped double quotes.'() {
+        given: 'a response entity with a data field of value #jsonValue wrapped in escaped double quotes'
+            responseEntity.getBody() >> '{' + SDNC_OUTPUT_JSON_NAME + ': { "data": "' + YANG_ESCAPED_QUOTE + jsonValue + YANG_ESCAPED_QUOTE + '" }}'
+        when: 'the yang resource is extracted'
+            def result = YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+        then: 'the yang source string is as expected'
+            result.getYangSource() == expectedString
+        where: 'the following data is used'
+            jsonValue                                 || expectedString
+            'line1' + YANG_ESCAPED_NEW_LINE + 'line2' || '"line1' + NEW_LINE + 'line2"'
+            'a' + YANG_ESCAPED_BACK_SLASH+'b'         || '"a'+BACK_SLASH +'b"'
+            'a' + YANG_ESCAPED_QUOTE + 'b'            || '"a'+QUOTE+'b"'
+            'a' + YANG_ESCAPED_TAB + 'b'              || '"a'+TAB+'b"'
+    }
+
+    def 'Attempt to extract yang resource with un-escaped double quotes in the source.'() {
+        given: 'a response entity with a data field with unescaped double quotes'
+            responseEntity.getBody() >> '{' + SDNC_OUTPUT_JSON_NAME + ': { "data": "' + QUOTE + 'some data' + QUOTE + '" }}'
+        when: 'Json is converted to String'
+            YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+        then: 'the output of the method is equal to the output from the test template'
+            thrown(JsonSyntaxException)
+    }
+
+    def 'Attempt to extract yang resource without #without.'() {
+        given: 'a response entity with a body without #without'
+            responseEntity.getBody() >> jsonBody
+        when: 'Json is converted to String'
+            YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+        then: 'the output of the method is equal to the output from the test template'
+            thrown(ModuleResourceNotFoundException)
+        where:
+            without               | jsonBody
+            'data'                | '{' + SDNC_OUTPUT_JSON_NAME + ': { "something": "else" }}'
+            SDNC_OUTPUT_JSON_NAME | '{"something:else": { "data": "data" }}'
+    }
+
+}
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/client/NcmpRestClientSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/client/NcmpRestClientSpec.groovy
new file mode 100644
index 00000000..4d7e27e2
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/client/NcmpRestClientSpec.groovy
@@ -0,0 +1,57 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.client
+
+import org.onap.cps.ncmp.dmi.config.DmiConfiguration
+import org.springframework.http.HttpMethod
+import org.springframework.http.ResponseEntity
+import org.springframework.web.client.RestTemplate
+import spock.lang.Specification
+
+class NcmpRestClientSpec extends Specification {
+    def objectUnderTest = new NcmpRestClient(mockCpsProperties, mockRestTemplate)
+    def mockCpsProperties = Mock(DmiConfiguration.CpsProperties)
+    def mockRestTemplate = Mock(RestTemplate)
+
+    def setup() {
+        objectUnderTest.cpsProperties = mockCpsProperties
+        objectUnderTest.restTemplate = mockRestTemplate
+    }
+
+    def 'Register a cm handle.'() {
+        given: 'some request data'
+            def someRequestData = 'some request data'
+        and: 'configuration data'
+            mockCpsProperties.baseUrl >> 'http://some-uri'
+            mockCpsProperties.dmiRegistrationUrl >> 'some-url'
+            mockCpsProperties.authUsername >> 'some-username'
+            mockCpsProperties.authPassword >> 'some-password'
+        and: 'the rest template returns a valid response entity'
+            def mockResponseEntity = Mock(ResponseEntity)
+        when: 'registering a cm handle'
+            def result = objectUnderTest.registerCmHandlesWithNcmp(someRequestData)
+        then: 'the rest template is called with the correct uri and original request data in the body'
+            1 * mockRestTemplate.exchange({ it.toString() == 'http://some-uri/some-url' },
+                    HttpMethod.POST, { it.body.contains(someRequestData) }, String.class) >> mockResponseEntity
+        and: 'the output of the method is equal to the output from the rest template service'
+            result == mockResponseEntity
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/client/SdncRestconfClientSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/client/SdncRestconfClientSpec.groovy
new file mode 100644
index 00000000..f334f780
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/client/SdncRestconfClientSpec.groovy
@@ -0,0 +1,102 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2022 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.client
+
+import org.onap.cps.ncmp.dmi.config.DmiConfiguration
+import org.springframework.http.HttpEntity
+import org.springframework.http.HttpHeaders
+import org.springframework.http.HttpMethod
+import org.springframework.http.ResponseEntity
+import org.springframework.web.client.RestTemplate
+import spock.lang.Specification
+
+import static org.springframework.http.HttpMethod.GET
+import static org.springframework.http.HttpMethod.POST
+import static org.springframework.http.HttpMethod.DELETE
+import static org.springframework.http.HttpMethod.PUT
+
+class SdncRestconfClientSpec extends Specification {
+
+    def mockSdncProperties = Mock(DmiConfiguration.SdncProperties)
+    def mockRestTemplate = Mock(RestTemplate)
+    def objectUnderTest = new SdncRestconfClient(mockSdncProperties, mockRestTemplate)
+
+    def 'SDNC GET operation.'() {
+        given: 'a get resource url'
+            def getResourceUrl = '/getResourceUrl'
+        and: 'test configuration data'
+            setupTestConfigurationData()
+        and: 'the process returns a valid response entity'
+            def mockResponseEntity = Mock(ResponseEntity)
+            mockRestTemplate.exchange({ it.toString() == 'http://some-uri/getResourceUrl' },
+                    HttpMethod.GET, _ as HttpEntity, String.class) >> mockResponseEntity
+        when: 'the resource is fetched'
+            def result = objectUnderTest.getOperation(getResourceUrl)
+        then: 'the output of the method is equal to the output from the rest template service'
+            result == mockResponseEntity
+    }
+
+    def 'SDNC #scenario operation called.'() {
+        given: 'some request data'
+            def someRequestData = 'some request data'
+        and: 'a url for get module resources'
+            def getModuleResourceUrl = '/getModuleResourceUrl'
+        and: 'test configuration data'
+            setupTestConfigurationData()
+        and: 'the process returns a valid response entity'
+            def mockResponseEntity = Mock(ResponseEntity)
+        when: 'the resource is fetched'
+            def result = objectUnderTest.httpOperationWithJsonData(expectedHttpMethod, getModuleResourceUrl, someRequestData, new HttpHeaders())
+        then: 'the rest template is called with the correct uri and json in the body'
+            1 * mockRestTemplate.exchange({ it.toString() == 'http://some-uri/getModuleResourceUrl' },
+                    expectedHttpMethod, { it.body.contains(someRequestData) }, String.class) >> mockResponseEntity
+        and: 'the output of the method is the same as the output from the rest template service'
+            result == mockResponseEntity
+        where: 'the following values are used'
+            scenario || expectedHttpMethod
+            'POST'   || POST
+            'PUT'    || PUT
+            'GET'    || GET
+            'DELETE' || DELETE
+    }
+
+    def 'SDNC GET operation with headers.'() {
+        given: 'a get url'
+            def getResourceUrl = '/getResourceUrl'
+        and: 'test configuration data'
+            setupTestConfigurationData()
+        and: 'the process returns a valid response entity'
+            def mockResponseEntity = Mock(ResponseEntity)
+            mockRestTemplate.exchange({ it.toString() == 'http://some-uri/getResourceUrl' },
+                    HttpMethod.GET, _ as HttpEntity, String.class) >> mockResponseEntity
+        when: 'the resource is fetched with headers'
+            def result = objectUnderTest.getOperation(getResourceUrl, new HttpHeaders())
+        then: 'the output of the method is equal to the output from the rest template service'
+            result == mockResponseEntity
+    }
+
+    def setupTestConfigurationData() {
+        mockSdncProperties.baseUrl >> 'http://some-uri'
+        mockSdncProperties.authUsername >> 'some-username'
+        mockSdncProperties.authPassword >> 'some-password'
+        mockSdncProperties.topologyId >> 'some-topology-id'
+    }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/operation/SdncOperationsSpec.groovy b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/operation/SdncOperationsSpec.groovy
new file mode 100644
index 00000000..9dcb72e6
--- /dev/null
+++ b/dmi-service/src/test/groovy/org/onap/cps/ncmp/dmi/service/operation/SdncOperationsSpec.groovy
@@ -0,0 +1,176 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021-2022 Nordix Foundation
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.service.operation
+
+import org.onap.cps.ncmp.dmi.TestUtils
+import org.onap.cps.ncmp.dmi.config.DmiConfiguration
+import org.onap.cps.ncmp.dmi.exception.SdncException
+import org.onap.cps.ncmp.dmi.service.client.SdncRestconfClient
+import org.spockframework.spring.SpringBean
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.http.HttpHeaders
+import org.springframework.http.HttpMethod
+import org.springframework.http.HttpStatus
+import org.springframework.http.ResponseEntity
+import org.springframework.test.context.ContextConfiguration
+import spock.lang.Specification
+
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.CREATE
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.DELETE
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.PATCH
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.UPDATE
+import static org.onap.cps.ncmp.dmi.model.DataAccessRequest.OperationEnum.READ
+
+@SpringBootTest
+@ContextConfiguration(classes = [DmiConfiguration.SdncProperties, SdncOperations])
+class SdncOperationsSpec extends Specification {
+
+    @SpringBean
+    SdncRestconfClient mockSdncRestClient = Mock()
+
+    @Autowired
+    SdncOperations objectUnderTest
+
+    def 'get modules from node.'() {
+        given: 'a node id and url'
+            def nodeId = 'node1'
+            def expectedUrl = '/rests/data/network-topology:network-topology/topology=test-topology/node=node1/yang-ext:mount/ietf-netconf-monitoring:netconf-state/schemas'
+        and: 'sdnc returns one module during process'
+            mockSdncRestClient.getOperation(expectedUrl) >>
+                ResponseEntity.ok(TestUtils.getResourceFileContent('ModuleSchema.json'))
+        when: 'module schemas from node are fetched'
+            def moduleSchemas = objectUnderTest.getModuleSchemasFromNode(nodeId)
+        then: 'one module is found'
+            moduleSchemas.size() == 1
+        and: 'module schema has expected values'
+            with(moduleSchemas[0]) {
+                it.getIdentifier() == "example-identifier"
+                it.getNamespace() == "example:namespace"
+                it.getVersion() == "example-version"
+                it.getFormat() == "example-format"
+                it.getLocation() == ["example-location"]
+            }
+    }
+
+    def 'No modules from Node: SDNC Response - #scenario .'() {
+        given: 'node id and url'
+            def nodeId = 'node1'
+            def expectedUrl = '/rests/data/network-topology:network-topology/topology=test-topology/node=node1/yang-ext:mount/ietf-netconf-monitoring:netconf-state/schemas'
+        and: 'sdnc operation returns #scenario'
+            mockSdncRestClient.getOperation(expectedUrl) >> ResponseEntity.ok(responseBody)
+        when: 'the module schemas are requested'
+            def moduleSchemas = objectUnderTest.getModuleSchemasFromNode(nodeId)
+        then: 'no module schemas are returned'
+            moduleSchemas.size() == 0
+        where:
+            scenario               | responseBody
+            'null response body'   | null
+            'empty response body ' | ''
+            'no module schema'     | '{ "ietf-netconf-monitoring:schemas" : { "schema" : [] } } '
+    }
+
+    def 'Error handling - modules from node: #scenario'() {
+        given: 'node id and url'
+            def nodeId = 'node1'
+            def expectedUrl = '/rests/data/network-topology:network-topology/topology=test-topology/node=node1/yang-ext:mount/ietf-netconf-monitoring:netconf-state/schemas'
+        and: '#scenario is returned during process'
+            mockSdncRestClient.getOperation(expectedUrl) >> new ResponseEntity<>(sdncResponseBody, sdncHttpStatus)
+        when: 'module schemas from node are fetched'
+            objectUnderTest.getModuleSchemasFromNode(nodeId)
+        then: 'SDNCException is thrown'
+            def thrownException = thrown(SdncException)
+            thrownException.getDetails().contains(expectedExceptionDetails)
+        where:
+            scenario                             | sdncHttpStatus         | sdncResponseBody                        || expectedExceptionDetails
+            'failed response from SDNC'          | HttpStatus.BAD_REQUEST | '{ "errorMessage" : "incorrect input"}' || '{ "errorMessage" : "incorrect input"}'
+            'invalid json response'              | HttpStatus.OK          | 'invalid-json'                          || 'SDNC response is not in the expected format'
+            'response in unexpected json schema' | HttpStatus.OK          | '{ "format" : "incorrect" }'            || 'SDNC response is not in the expected format'
+    }
+
+    def 'Get module resources from SDNC.'() {
+        given: 'node id and url'
+            def nodeId = 'some-node'
+            def expectedUrl = '/rests/operations/network-topology:network-topology/topology=test-topology/node=some-node/yang-ext:mount/ietf-netconf-monitoring:get-schema'
+        when: 'module resource is fetched with the expected parameters'
+            objectUnderTest.getModuleResource(nodeId, 'some-json-data')
+        then: 'the SDNC Rest client is invoked with the correct parameters'
+            1 * mockSdncRestClient.httpOperationWithJsonData(HttpMethod.POST, expectedUrl, 'some-json-data', _ as HttpHeaders)
+    }
+
+    def 'Get resource data from node to SDNC.'() {
+        given: 'expected url'
+            def expectedUrl = '/rests/data/network-topology:network-topology/topology=test-topology/node=node1/yang-ext:mount/testResourceId?a=1&b=2&content=testContent'
+        when: 'resource data is fetched for given node ID'
+            objectUnderTest.getResouceDataForOperationalAndRunning('node1', 'testResourceId',
+                '(a=1,b=2)', 'content=testContent')
+        then: 'the SDNC get operation is executed with the correct URL'
+            1 * mockSdncRestClient.getOperation(expectedUrl)
+    }
+
+    def 'Write resource data with #scenario operation to SDNC.'() {
+        given: 'expected url'
+            def expectedUrl = '/rests/data/network-topology:network-topology/topology=test-topology/node=node1/yang-ext:mount/testResourceId'
+        when: 'write resource data for passthrough running is called'
+            objectUnderTest.writeData(operationEnum, 'node1', 'testResourceId', 'application/json', 'requestData')
+        then: 'the #expectedHttpMethod operation is executed with the correct parameters'
+            1 * mockSdncRestClient.httpOperationWithJsonData(expectedHttpMethod, expectedUrl, 'requestData', _ as HttpHeaders)
+        where: 'the following values are used'
+            scenario  | operationEnum  || expectedHttpMethod
+            'Create'  | CREATE         || HttpMethod.POST
+            'Update'  | UPDATE         || HttpMethod.PUT
+            'Read'    | READ           || HttpMethod.GET
+            'Delete'  | DELETE         || HttpMethod.DELETE
+            'Patch'   | PATCH          || HttpMethod.PATCH
+    }
+
+    def 'build query param list for SDNC where options #scenario'() {
+        when: 'query param list is built'
+            def result = objectUnderTest.buildQueryParamMap(optionsParamInQuery, 'd=4')
+                    .toSingleValueMap().toString()
+        then: 'result matches the expected result'
+            result == expectedResult
+        where: 'following parameters are used'
+            scenario                       | optionsParamInQuery || expectedResult
+            'is single key-value pair'     | '(a=x)'             || '[a:x, d:4]'
+            'is multiple key-value pairs'  | '(a=x,b=y,c=z)'     || '[a:x, b:y, c:z, d:4]'
+            'has / as special char'        | '(a=x,b=y,c=t/z)'   || '[a:x, b:y, c:t/z, d:4]'
+            'has " as special char'        | '(a=x,b=y,c="z")'   || '[a:x, b:y, c:"z", d:4]'
+            'has [] as special char'       | '(a=x,b=y,c=[z])'   || '[a:x, b:y, c:[z], d:4]'
+            'has = in value'               | '(a=(x=y),b=x=y)'   || '[a:(x=y), b:x=y, d:4]'
+            'is empty'                     | ''                  || '[:]'
+            'is null'                      | null                || '[:]'
+    }
+
+    def 'options parameters contains a comma #scenario'() {
+        when: 'query param list is built with #scenario'
+            def result = objectUnderTest.buildQueryParamMap(optionsParamInQuery, 'd=4').toSingleValueMap()
+        then: 'expect 2 elements from options where we are ignoring empty query param value, +1 from content query param (2+1) = 3 elements'
+            def expectedNoOfElements = 3
+        and: 'results contains equal elements as expected'
+            result.size() == expectedNoOfElements
+        where: 'following parameters are used'
+            scenario              | optionsParamInQuery
+            '"," in value'        | '(a=(x,y),b=y)'
+            '"," in string value' | '(a="x,y",b=y)'
+    }
+}
diff --git a/dmi-service/src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java b/dmi-service/src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java
new file mode 100644
index 00000000..c10d91a5
--- /dev/null
+++ b/dmi-service/src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java
@@ -0,0 +1,54 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+
+/**
+ * Common convenience methods for testing.
+ */
+public class TestUtils {
+
+    /**
+     * Convert a file in the test resource folder to file.
+     *
+     * @param filename to name of the file in test/resources
+     * @return the file
+     * @throws IOException when there is an IO issue
+     */
+    public static File readFile(final String filename) {
+        return new File(ClassLoader.getSystemClassLoader().getResource(filename).getFile());
+    }
+
+    /**
+     * Convert a file in the test resource folder to a string.
+     *
+     * @param filename to name of the file in test/resources
+     * @return the content of the file as a String
+     * @throws IOException when there is an IO issue
+     */
+    public static String getResourceFileContent(final String filename) throws IOException {
+        final File file = readFile(filename);
+        return new String(Files.readAllBytes(file.toPath()));
+    }
+}
diff --git a/dmi-service/src/test/java/org/onap/cps/ncmp/dmi/rest/controller/TestController.java b/dmi-service/src/test/java/org/onap/cps/ncmp/dmi/rest/controller/TestController.java
new file mode 100644
index 00000000..5240e239
--- /dev/null
+++ b/dmi-service/src/test/java/org/onap/cps/ncmp/dmi/rest/controller/TestController.java
@@ -0,0 +1,35 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.rest.controller;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class TestController {
+
+    @GetMapping("/test")
+    ResponseEntity<String> test() {
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+}
diff --git a/dmi-service/src/test/resources/ModuleSchema.json b/dmi-service/src/test/resources/ModuleSchema.json
new file mode 100644
index 00000000..50c67154
--- /dev/null
+++ b/dmi-service/src/test/resources/ModuleSchema.json
@@ -0,0 +1,15 @@
+{
+  "ietf-netconf-monitoring:schemas": {
+    "schema": [
+      {
+        "identifier": "example-identifier",
+        "version": "example-version",
+        "format": "example-format",
+        "namespace": "example:namespace",
+        "location": [
+          "example-location"
+        ]
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/application.yml b/dmi-service/src/test/resources/application.yml
new file mode 100644
index 00000000..ddc2b45f
--- /dev/null
+++ b/dmi-service/src/test/resources/application.yml
@@ -0,0 +1,79 @@
+# ============LICENSE_START=======================================================
+# Copyright (C) 2021-2023 Nordix Foundation
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+
+rest:
+  api:
+    dmi-base-path: /dmi
+
+security:
+  permit-uri: /actuator/**,/swagger-ui/**,/swagger-resources/**,/v3/api-docs
+  auth:
+    username: cpsuser
+    password: cpsr0cks!
+
+sdnc:
+  baseUrl: http://test
+  topologyId: test-topology
+  auth:
+    username: test
+    password: test
+
+cps-core:
+  baseUrl: some url for cps
+  dmiRegistrationUrl: some registration url
+  auth:
+    username: some cps core user
+    password: some cps core password
+
+dmi:
+  service:
+    url: some url for the dmi service
+  avc:
+    subscription-topic: ncmp-dmi-cm-avc-subscription
+    subscription-response-topic: dmi-ncmp-cm-avc-subscription
+
+spring:
+  application:
+    name: ncmp-dmi-plugin
+  mvc:
+    pathmatch:
+      matching-strategy: ANT_PATH_MATCHER
+  kafka:
+    bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVER}
+    security:
+      protocol: PLAINTEXT
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.StringSerializer
+      value-serializer: io.cloudevents.kafka.CloudEventSerializer
+      client-id: ncmp-dmi-plugin
+    consumer:
+      group-id: ${NCMP_CONSUMER_GROUP_ID:ncmp-group}
+      key-deserializer: org.springframework.kafka.support.serializer.ErrorHandlingDeserializer
+      value-deserializer: org.springframework.kafka.support.serializer.ErrorHandlingDeserializer
+      properties:
+        spring.deserializer.key.delegate.class: org.apache.kafka.common.serialization.StringDeserializer
+        spring.deserializer.value.delegate.class: io.cloudevents.kafka.CloudEventDeserializer
+        spring.json.use.type.headers: false
+
+app:
+  ncmp:
+    async:
+      topic: ${NCMP_ASYNC_M2M_TOPIC:ncmp-async-m2m}
+
+logging:
+  format: json
diff --git a/dmi-service/src/test/resources/cmNotificationSubscriptionCreationEvent.json b/dmi-service/src/test/resources/cmNotificationSubscriptionCreationEvent.json
new file mode 100644
index 00000000..3b780976
--- /dev/null
+++ b/dmi-service/src/test/resources/cmNotificationSubscriptionCreationEvent.json
@@ -0,0 +1,43 @@
+{
+  "data": {
+    "cmhandles": [
+      {
+        "cmhandleId": "CMHandle1",
+        "private-properties": {
+          "prop1": "prop-value"
+        }
+      },
+      {
+        "cmhandleId": "CMHandle2",
+        "private-properties": {
+          "prop-x": "prop-valuex",
+          "prop-p": "prop-valuep"
+        }
+      },
+      {
+        "cmhandleId": "CMHandle3",
+        "private-properties": {
+          "prop-y": "prop-valuey"
+        }
+      }
+    ],
+    "predicates": [
+      {
+        "targetFilter": [
+          "CMHandle1",
+          "CMHandle2",
+          "CMHandle3"
+        ],
+        "scopeFilter": {
+          "datastore": "ncmp-datastore:passthrough-running",
+          "xpath-filter": [
+            "//_3gpp-nr-nrm-gnbdufunction:GNBDUFunction/_3gpp-nr-nrm-nrcelldu:NRCellDU/",
+            "//_3gpp-nr-nrm-gnbcuupfunction:GNBCUUPFunction//",
+            "//_3gpp-nr-nrm-gnbcucpfunction:GNBCUCPFunction/_3gpp-nr-nrm-nrcelldu:NRCellCU//",
+            "//_3gpp-nr-nrm-nrsectorcarrier:NRSectorCarrier//"
+          ]
+        }
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/createDataWithNormalChar.json b/dmi-service/src/test/resources/createDataWithNormalChar.json
new file mode 100644
index 00000000..31cdf1c5
--- /dev/null
+++ b/dmi-service/src/test/resources/createDataWithNormalChar.json
@@ -0,0 +1,8 @@
+{
+  "operation": "create",
+  "dataType": "application/json",
+  "data": "normal request body",
+  "cmHandleProperties": {
+    "some-property": "some-property-value"
+  }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/createDataWithSpecialChar.json b/dmi-service/src/test/resources/createDataWithSpecialChar.json
new file mode 100644
index 00000000..1e7622ee
--- /dev/null
+++ b/dmi-service/src/test/resources/createDataWithSpecialChar.json
@@ -0,0 +1,8 @@
+{
+  "operation": "create",
+  "dataType": "application/json",
+  "data": "data with quote \" and new line \n",
+  "cmHandleProperties": {
+    "some-property": "some-property-value"
+  }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/deleteData.json b/dmi-service/src/test/resources/deleteData.json
new file mode 100644
index 00000000..2233fa01
--- /dev/null
+++ b/dmi-service/src/test/resources/deleteData.json
@@ -0,0 +1,8 @@
+{
+  "operation": "delete",
+  "dataType": "application/json",
+  "data": "normal request body",
+  "cmHandleProperties": {
+    "some-property": "some-property-value"
+  }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/moduleResources.json b/dmi-service/src/test/resources/moduleResources.json
new file mode 100644
index 00000000..23adfcba
--- /dev/null
+++ b/dmi-service/src/test/resources/moduleResources.json
@@ -0,0 +1,18 @@
+{
+  "data": {
+    "modules": [
+      {
+        "name": "ietf-yang-library",
+        "revision": "2016-06-21"
+      },
+      {
+        "name": "nc-notifications",
+        "revision": "2008-07-14"
+      }
+    ]
+  },
+  "cmHandleProperties": {
+    "subsystemId": "system-001"
+  },
+  "moduleSetTag": "module-set-tag1"
+}
diff --git a/dmi-service/src/test/resources/patchData.json b/dmi-service/src/test/resources/patchData.json
new file mode 100644
index 00000000..e5466eaf
--- /dev/null
+++ b/dmi-service/src/test/resources/patchData.json
@@ -0,0 +1,8 @@
+{
+  "operation": "patch",
+  "dataType": "application/yang.patch+json",
+  "data": "normal request body",
+  "cmHandleProperties": {
+    "some-property": "some-property-value"
+  }
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/readData.json b/dmi-service/src/test/resources/readData.json
new file mode 100644
index 00000000..53f6d2ed
--- /dev/null
+++ b/dmi-service/src/test/resources/readData.json
@@ -0,0 +1,9 @@
+{
+  "operation": "read",
+  "dataType": "application/json",
+  "data": "normal request body",
+  "cmHandleProperties": {
+    "some-property": "some-property-value"
+  },
+  "moduleSetTag": "module-set-tag-example"
+}
\ No newline at end of file
diff --git a/dmi-service/src/test/resources/updateData.json b/dmi-service/src/test/resources/updateData.json
new file mode 100644
index 00000000..7cbf4f0c
--- /dev/null
+++ b/dmi-service/src/test/resources/updateData.json
@@ -0,0 +1,8 @@
+{
+  "operation": "update",
+  "dataType": "application/json",
+  "data": "normal request body",
+  "cmHandleProperties": {
+    "some-property": "some-property-value"
+  }
+}
\ No newline at end of file