Create module structure in DMI Plugin

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>

37 files changed, 2854 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]));
+    }
+}