Move cps files to root dir

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>

17 files changed, 978 insertions, 0 deletions

diff --git a/cps-service/pom.xml b/cps-service/pom.xml
new file mode 100644
index 000000000..3e8cc2deb
--- /dev/null
+++ b/cps-service/pom.xml
@@ -0,0 +1,68 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"

+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">

+  <modelVersion>4.0.0</modelVersion>

+  <parent>

+    <groupId>org.onap.cps</groupId>

+    <artifactId>cps-parent</artifactId>

+    <version>0.0.1-SNAPSHOT</version>

+    <relativePath>../cps-parent/pom.xml</relativePath>

+  </parent>

+

+  <artifactId>cps-service</artifactId>

+

+  <dependencies>

+    <dependency>

+      <groupId>org.opendaylight.yangtools</groupId>

+      <artifactId>yang-parser-api</artifactId>

+    </dependency>

+    <dependency>

+      <groupId>org.opendaylight.yangtools</groupId>

+      <artifactId>yang-parser-impl</artifactId>

+    </dependency>

+    <dependency>

+      <groupId>org.opendaylight.yangtools</groupId>

+      <artifactId>yang-model-util</artifactId>

+    </dependency>

+    <!-- required for processing yang data in json format -->

+    <dependency>

+      <groupId>org.opendaylight.yangtools</groupId>

+      <artifactId>yang-data-codec-gson</artifactId>

+    </dependency>

+    <dependency>

+      <groupId>org.projectlombok</groupId>

+      <artifactId>lombok</artifactId>

+    </dependency>

+    <dependency>

+      <!-- For logging -->

+      <groupId>org.slf4j</groupId>

+      <artifactId>slf4j-api</artifactId>

+    </dependency>

+    <dependency>

+      <!-- For dependency injection -->

+      <groupId>org.springframework</groupId>

+      <artifactId>spring-context</artifactId>

+    </dependency>

+    <dependency>

+      <!-- For parsing JSON object -->

+      <groupId>com.google.code.gson</groupId>

+      <artifactId>gson</artifactId>

+    </dependency>

+    <!-- T E S T   D E P E N D E N C I E S -->

+    <dependency>

+      <groupId>org.codehaus.groovy</groupId>

+      <artifactId>groovy</artifactId>

+      <scope>test</scope>

+    </dependency>

+    <dependency>

+      <groupId>org.spockframework</groupId>

+      <artifactId>spock-core</artifactId>

+      <scope>test</scope>

+    </dependency>

+    <dependency>

+      <groupId>cglib</groupId>

+      <artifactId>cglib-nodep</artifactId>

+      <scope>test</scope>

+    </dependency>

+  </dependencies>

+</project>

diff --git a/cps-service/src/main/java/org/onap/cps/api/CpService.java b/cps-service/src/main/java/org/onap/cps/api/CpService.java
new file mode 100644
index 000000000..4d94a4654
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/CpService.java
@@ -0,0 +1,79 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  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.api;
+
+import java.io.File;
+import java.io.IOException;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParserException;
+
+/**
+ * Configuration and persistency service interface which holds methods for parsing and storing yang models and data.
+ */
+public interface CpService {
+
+    /**
+     * Parse and validate a string representing a yang model to generate a schema context.
+     *
+     * @param yangModelContent the input stream
+     * @return the schema context
+     */
+    SchemaContext parseAndValidateModel(final String yangModelContent);
+
+    /**
+     * Parse and validate a file representing a yang model to generate a schema context.
+     *
+     * @param yangModelFile the yang file
+     * @return the schema context
+     */
+    SchemaContext parseAndValidateModel(final File yangModelFile);
+
+    /**
+     * Store schema context for a yang model.
+     *
+     * @param schemaContext the schema context
+     * @param dataspaceName the dataspace name
+     */
+    void storeSchemaContext(final SchemaContext schemaContext, final String dataspaceName);
+
+    /**
+     * Store the JSON structure in the database.
+     *
+     * @param jsonStructure the JSON structure.
+     * @return entity ID.
+     */
+    Integer storeJsonStructure(final String jsonStructure);
+
+    /**
+     * Read a JSON Object using the object identifier.
+     *
+     * @param jsonObjectId the JSON object identifier.
+     * @return the JSON structure.
+     */
+    String getJsonById(final int jsonObjectId);
+
+    /**
+     * Delete a JSON Object using the object identifier.
+     *
+     * @param jsonObjectId the JSON object identifier.
+     */
+    void deleteJsonById(final int jsonObjectId);
+}
diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java
new file mode 100644
index 000000000..c33746e86
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java
@@ -0,0 +1,100 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  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.api.impl;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.Optional;
+import org.onap.cps.api.CpService;
+import org.onap.cps.exceptions.CpsException;
+import org.onap.cps.exceptions.CpsValidationException;
+import org.onap.cps.spi.DataPersistencyService;
+import org.onap.cps.spi.ModelPersistencyService;
+import org.onap.cps.utils.YangUtils;
+import org.opendaylight.yangtools.yang.common.Revision;
+import org.opendaylight.yangtools.yang.model.api.Module;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParserException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+
+@Component
+public class CpServiceImpl implements CpService {
+
+    @Autowired
+    private ModelPersistencyService modelPersistencyService;
+
+    @Autowired
+    private DataPersistencyService dataPersistencyService;
+
+    @Override
+    public final SchemaContext parseAndValidateModel(final String yangModelContent) {
+
+        try {
+            final File tempFile = File.createTempFile("yang", ".yang");
+            try (BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile))) {
+                writer.write(yangModelContent);
+            }
+            return parseAndValidateModel(tempFile);
+        } catch (IOException e) {
+            throw new CpsException(e);
+        }
+    }
+
+    @Override
+    public final SchemaContext parseAndValidateModel(final File yangModelFile) {
+        try {
+            return YangUtils.parseYangModelFile(yangModelFile);
+        } catch (YangParserException e) {
+            throw new CpsValidationException("Yang file validation failed", e.getMessage());
+        } catch (IOException e) {
+            throw new CpsException(e);
+        }
+    }
+
+    @Override
+    public final Integer storeJsonStructure(final String jsonStructure) {
+        return dataPersistencyService.storeJsonStructure(jsonStructure);
+    }
+
+    @Override
+    public final String getJsonById(final int jsonObjectId) {
+        return dataPersistencyService.getJsonById(jsonObjectId);
+    }
+
+    @Override
+    public void deleteJsonById(int jsonObjectId) {
+        dataPersistencyService.deleteJsonById(jsonObjectId);
+    }
+
+    @Override
+    public final void storeSchemaContext(final SchemaContext schemaContext, final String dataspaceName) {
+        for (final Module module : schemaContext.getModules()) {
+            Optional<Revision> optionalRevision = module.getRevision();
+            String revisionValue = optionalRevision.isPresent() ? optionalRevision.get().toString() : null;
+            modelPersistencyService.storeModule(module.getNamespace().toString(), module.toString(),
+                revisionValue, dataspaceName);
+        }
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/exceptions/CpsException.java b/cps-service/src/main/java/org/onap/cps/exceptions/CpsException.java
new file mode 100644
index 000000000..b54453cd9
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsException.java
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  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.exceptions;
+
+import lombok.Getter;
+import org.springframework.core.NestedExceptionUtils;
+
+/**
+ * CP Service exception.
+ */
+public class CpsException extends RuntimeException {
+
+    @Getter
+    String details;
+
+    /**
+     * Constructor.
+     *
+     * @param cause the cause of the exception
+     */
+    public CpsException(Throwable cause) {
+        super(cause.getMessage(), cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param cause   the cause of the exception
+     */
+    public CpsException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param details the error details
+     */
+    public CpsException(String message, String details) {
+        super(message);
+        this.details = details;
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/exceptions/CpsNotFoundException.java b/cps-service/src/main/java/org/onap/cps/exceptions/CpsNotFoundException.java
new file mode 100644
index 000000000..f44fe806c
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsNotFoundException.java
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  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.exceptions;
+
+import lombok.Getter;
+
+/**
+ * CP Service exception. Indicates the requested data being absent.
+ */
+public class CpsNotFoundException extends CpsException {
+
+    /**
+     * Constructor.
+     *
+     * @param cause the cause of the exception
+     */
+    public CpsNotFoundException(Throwable cause) {
+        super(cause.getMessage(), cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param cause   the cause of the exception
+     */
+    public CpsNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param details the error details
+     */
+    public CpsNotFoundException(String message, String details) {
+        super(message, details);
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/exceptions/CpsValidationException.java b/cps-service/src/main/java/org/onap/cps/exceptions/CpsValidationException.java
new file mode 100644
index 000000000..dba9c165b
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsValidationException.java
@@ -0,0 +1,55 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  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.exceptions;
+
+/**
+ * CP Service exception. Indicates the parameter validation failure.
+ */
+public class CpsValidationException extends CpsException {
+
+    /**
+     * Constructor.
+     *
+     * @param cause the cause of the exception
+     */
+    public CpsValidationException(Throwable cause) {
+        super(cause.getMessage(), cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param cause   the cause of the exception
+     */
+    public CpsValidationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param details the error details
+     */
+    public CpsValidationException(String message, String details) {
+        super(message, details);
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/DataPersistencyService.java b/cps-service/src/main/java/org/onap/cps/spi/DataPersistencyService.java
new file mode 100644
index 000000000..ce51f40ac
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/spi/DataPersistencyService.java
@@ -0,0 +1,49 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 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.spi;
+
+/**
+ * Defines methods to access and manipulate data using the chosen database solution.
+ */
+public interface DataPersistencyService {
+
+    /**
+     * Store the JSON structure in the database.
+     *
+     * @param jsonStructure the JSON structure.
+     * @return jsonEntityID the ID of the JSON entity.
+     */
+    Integer storeJsonStructure(final String jsonStructure);
+
+    /**
+     * Get the JSON structure from the database using the entity identifier.
+     *
+     * @param jsonStructureId the json entity identifier.
+     * @return a JSON Structure.
+     */
+    String getJsonById(int jsonStructureId);
+
+    /**
+     * Delete the JSON structure from the database using the entity identifier.
+     *
+     * @param jsonStructureId the json entity identifier.
+     */
+    void deleteJsonById(int jsonStructureId);
+}
\ No newline at end of file
diff --git a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistencyService.java b/cps-service/src/main/java/org/onap/cps/spi/ModelPersistencyService.java
new file mode 100644
index 000000000..2afdaa82a
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/spi/ModelPersistencyService.java
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  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.spi;
+
+/**
+ * Defines methods to access and manipulate data using the chosen database solution.
+ */
+public interface ModelPersistencyService {
+
+    /**
+     * Store the module from a yang model in the database.
+     *
+     * @param namespace module namespace
+     * @param moduleContent module content
+     * @param revision module revision
+     * @param dataspaceName the name of the dataspace the module is associated with
+     */
+    void storeModule(final String namespace, final String moduleContent, final String revision,
+        final String dataspaceName);
+
+}
diff --git a/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java b/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java
new file mode 100644
index 000000000..e9757eca0
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java
@@ -0,0 +1,99 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 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.utils;
+
+import com.google.gson.stream.JsonReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.Iterator;
+import java.util.ServiceLoader;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
+import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
+import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream;
+import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParser;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParserException;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParserFactory;
+import org.opendaylight.yangtools.yang.model.repo.api.StatementParserMode;
+import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
+
+public class YangUtils {
+
+    private static final YangParserFactory PARSER_FACTORY;
+
+    private YangUtils() {
+        throw new IllegalStateException("Utility class");
+    }
+
+    static {
+        final Iterator<YangParserFactory> it = ServiceLoader.load(YangParserFactory.class).iterator();
+        if (!it.hasNext()) {
+            throw new IllegalStateException("No YangParserFactory found");
+        }
+        PARSER_FACTORY = it.next();
+    }
+
+    /**
+     * Parse a file containing yang modules.
+     * @param yangModelFile  a file containing one or more yang modules
+     *                   (please note the file has to have a .yang extension if not an exception will be thrown)
+     * @return a SchemaContext representing the yang model
+     * @throws IOException when the system as an IO issue
+     * @throws YangParserException when the file does not contain a valid yang structure
+     */
+    public static SchemaContext parseYangModelFile(final File yangModelFile) throws IOException, YangParserException {
+        YangTextSchemaSource yangTextSchemaSource = YangTextSchemaSource.forFile(yangModelFile);
+        final YangParser yangParser = PARSER_FACTORY
+                .createParser(StatementParserMode.DEFAULT_MODE);
+        yangParser.addSource(yangTextSchemaSource);
+        return yangParser.buildEffectiveModel();
+    }
+
+    /**
+     * Parse a file containing json data for a certain model (schemaContext).
+     * @param jsonData a string containing json data for the given model
+     * @param schemaContext the SchemaContext for the given data
+     * @return the NormalizedNode representing the json data
+     */
+    public static NormalizedNode<?, ?> parseJsonData(final String jsonData, final SchemaContext schemaContext)
+            throws IOException {
+        JSONCodecFactory jsonCodecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02
+                .getShared(schemaContext);
+        final NormalizedNodeResult normalizedNodeResult = new NormalizedNodeResult();
+        final NormalizedNodeStreamWriter normalizedNodeStreamWriter = ImmutableNormalizedNodeStreamWriter
+                .from(normalizedNodeResult);
+        try (JsonParserStream jsonParserStream = JsonParserStream
+                .create(normalizedNodeStreamWriter, jsonCodecFactory)) {
+            final JsonReader jsonReader = new JsonReader(new StringReader(jsonData));
+            jsonParserStream.parse(jsonReader);
+        }
+        return normalizedNodeResult.getResult();
+    }
+
+    public static void chopNormalizedNode(NormalizedNode<?, ?> tree) {
+        //TODO Toine Siebelink, add code from proto-type (other user story)
+    }
+
+}
diff --git a/cps-service/src/main/resources/logback-spring.xml b/cps-service/src/main/resources/logback-spring.xml
new file mode 100644
index 000000000..8a4ae07c5
--- /dev/null
+++ b/cps-service/src/main/resources/logback-spring.xml
@@ -0,0 +1,48 @@
+<configuration scan="true" debug="false">
+    <include resource="org/springframework/boot/logging/logback/base.xml" />
+
+    <property name="queueSize" value="256" />
+    <property name="maxFileSize" value="20MB" />
+    <property name="maxHistory" value="30" />
+    <property name="totalSizeCap" value="20MB" />
+
+    <!-- log file names -->
+    <property name="logName" value="cps" />
+
+    <property name="currentTimeStamp" value="%d{&quot;yyyy-MM-dd'T'HH:mm:ss.SSSXXX&quot;,UTC}"/>
+
+    <property name="debugPattern"
+        value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX}|%thread|%X{RequestID}| %logger{50} - %msg%n" />
+
+    <appender name="Debug"
+        class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>../log/${logName}.log</file>
+        <rollingPolicy
+            class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+            <fileNamePattern>${logName}.%d{yyyy-MM-dd}.%i.log.zip
+            </fileNamePattern>
+            <maxFileSize>${maxFileSize}</maxFileSize>
+            <maxHistory>${maxHistory}</maxHistory>
+            <totalSizeCap>${totalSizeCap}</totalSizeCap>
+        </rollingPolicy>
+        <encoder>
+            <pattern>${debugPattern}</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="asyncDebug" class="ch.qos.logback.classic.AsyncAppender">
+        <queueSize>256</queueSize>
+        <appender-ref ref="Debug" />
+        <includeCallerData>true</includeCallerData>
+    </appender>
+
+    <logger name="org.onap.cps" level="DEBUG" additivity="false">
+        <appender-ref ref="asyncDebug" />
+    </logger>
+
+
+    <root level="INFO">
+        <appender-ref ref="asyncDebug" />
+    </root>
+
+</configuration>
\ No newline at end of file
diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy
new file mode 100644
index 000000000..5f42810bd
--- /dev/null
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy
@@ -0,0 +1,116 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  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.api.impl
+
+import org.onap.cps.TestUtils
+import org.onap.cps.exceptions.CpsValidationException
+import org.onap.cps.spi.DataPersistencyService
+import org.opendaylight.yangtools.yang.common.Revision
+import org.opendaylight.yangtools.yang.model.api.SchemaContext
+import spock.lang.Specification
+
+class CpServiceImplSpec extends Specification {
+
+    def mockDataPersistencyService = Mock(DataPersistencyService)
+    def objectUnderTest = new CpServiceImpl()
+
+    def setup() {
+        objectUnderTest.dataPersistencyService = mockDataPersistencyService
+    }
+
+    def 'Cps Service provides to its client the id assigned by the system when storing a data structure'() {
+        given: 'that data persistency service is giving id 123 to a data structure it is asked to store'
+            mockDataPersistencyService.storeJsonStructure(_) >> 123
+        expect: 'Cps service returns the same id when storing data structure'
+            objectUnderTest.storeJsonStructure('') == 123
+    }
+
+    def 'Parse and Validate a Yang Model with a Valid Yang Model'() {
+        given: 'a yang model (file)'
+            def yangModel = TestUtils.getResourceFileContent('bookstore.yang')
+        when: 'a valid model is parsed and validated'
+            def result = objectUnderTest.parseAndValidateModel(yangModel)
+        then: 'Verify a schema context for that model is created with the correct identity'
+            assertModule(result)
+    }
+
+    def 'Parse and Validate a Yang Model Using a File'() {
+        given: 'a yang file that contains a yang model'
+            File file = new File(ClassLoader.getSystemClassLoader().getResource('bookstore.yang').getFile())
+        when: 'a model is parsed and validated'
+            def result = objectUnderTest.parseAndValidateModel(file)
+        then: 'Verify a schema context for that model is created with the correct identity'
+            assertModule(result)
+
+    }
+
+    def assertModule(SchemaContext schemaContext){
+        def optionalModule = schemaContext.findModule('bookstore', Revision.of('2020-09-15'))
+        return schemaContext.modules.size() == 1 && optionalModule.isPresent()
+    }
+
+    def 'Parse and Validate an Invalid Model'() {
+        given: 'a yang file that contains a invalid yang model'
+            File file = new File(ClassLoader.getSystemClassLoader().getResource('invalid.yang').getFile())
+        when: 'the model is parsed and validated'
+            objectUnderTest.parseAndValidateModel(file)
+        then: 'a CpsValidationException is thrown'
+            thrown(CpsValidationException)
+    }
+
+    def 'Store a SchemaContext'() {
+        expect: 'No exception to be thrown when a valid model (schema) is stored'
+            objectUnderTest.storeSchemaContext(Stub(SchemaContext.class), "sampleDataspace")
+    }
+
+    def 'Read a JSON object with a valid identifier'(){
+        given: 'that the data persistence service returns a JSON structure for identifier 1'
+            mockDataPersistencyService.getJsonById(1) >> '{name : hello}'
+        expect: 'that the same JSON structure is returned by CPS'
+            objectUnderTest.getJsonById(1) == '{name : hello}'
+    }
+
+    def 'Read a JSON object with an identifier that does not exist'(){
+        given: 'that the data persistence service throws an exception'
+            def exceptionThrownByPersistenceService = new IllegalStateException()
+            mockDataPersistencyService.getJsonById(_) >> {throw exceptionThrownByPersistenceService}
+        when: 'we try to get the JSON structure'
+            objectUnderTest.getJsonById(1);
+        then: 'the same exception is thrown by CPS'
+            thrown(IllegalStateException)
+    }
+
+    def 'Delete a JSON object with a valid identifier'(){
+        given: 'that the data persistence service can delete a JSON structure for identifier 1'
+            mockDataPersistencyService.deleteJsonById(1)
+        expect: 'No exception is thrown when we delete a JSON structure with identifier 1'
+            objectUnderTest.deleteJsonById(1)
+    }
+
+    def 'Delete a JSON object with an identifier that does not exist'(){
+        given: 'that the data persistence service throws an exception'
+            mockDataPersistencyService.deleteJsonById(_) >> {throw new IllegalStateException()}
+        when: 'we try to delete a JSON structure'
+            objectUnderTest.deleteJsonById(100);
+        then: 'the same exception is thrown by CPS'
+            thrown(IllegalStateException)
+    }
+}
\ No newline at end of file
diff --git a/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy
new file mode 100644
index 000000000..8aabc4844
--- /dev/null
+++ b/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy
@@ -0,0 +1,80 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 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.utils
+
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode
+import org.opendaylight.yangtools.yang.common.QName
+import org.opendaylight.yangtools.yang.common.Revision
+import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException
+import spock.lang.Specification
+import spock.lang.Unroll
+
+class YangUtilsSpec extends Specification{
+    def 'Parsing a valid Yang Model'() {
+        given: 'a yang model (file)'
+            def file = new File(ClassLoader.getSystemClassLoader().getResource('bookstore.yang').getFile())
+        when: 'the file is parsed'
+            def result = YangUtils.parseYangModelFile(file)
+        then: 'the result contain 1 module of the correct name and revision'
+            result.modules.size() == 1
+            def optionalModule = result.findModule('bookstore', Revision.of('2020-09-15'))
+            optionalModule.isPresent()
+    }
+
+    @Unroll
+    def 'parsing invalid yang file (#description)'() {
+        given: 'a file with #description'
+            File file = new File(ClassLoader.getSystemClassLoader().getResource(filename).getFile());
+        when: 'the file is parsed'
+            YangUtils.parseYangModelFile(file)
+        then: 'an exception is thrown'
+            thrown(expectedException)
+        where: 'the following parameters are used'
+             filename           | description          || expectedException
+            'invalid.yang'      | 'no valid content'   || YangSyntaxErrorException
+            'someOtherFile.txt' | 'no .yang extension' || IllegalArgumentException
+    }
+
+    def 'Parsing a valid Json String'() {
+        given: 'a yang model (file)'
+            def jsonData = org.onap.cps.TestUtils.getResourceFileContent('bookstore.json')
+        and: 'a model for that data'
+            def file = new File(ClassLoader.getSystemClassLoader().getResource('bookstore.yang').getFile())
+            def schemaContext = YangUtils.parseYangModelFile(file)
+        when: 'the json data is parsed'
+            NormalizedNode<?, ?> result = YangUtils.parseJsonData(jsonData, schemaContext);
+        then: 'the result is a normalized node of the correct type'
+            result.nodeType == QName.create('org:onap:ccsdk:sample','2020-09-15','bookstore')
+    }
+
+    def 'Parsing an invalid Json String'() {
+        given: 'a yang model (file)'
+            def jsonData = '{incomplete json'
+        and: 'a model'
+            def file = new File(ClassLoader.getSystemClassLoader().getResource('bookstore.yang').getFile())
+            def schemaContext = YangUtils.parseYangModelFile(file)
+        when: 'the invalid json is parsed'
+            YangUtils.parseJsonData(jsonData, schemaContext);
+        then: ' an exception is thrown'
+            thrown(IllegalStateException)
+    }
+
+
+}
diff --git a/cps-service/src/test/java/org/onap/cps/TestUtils.java b/cps-service/src/test/java/org/onap/cps/TestUtils.java
new file mode 100644
index 000000000..07647520b
--- /dev/null
+++ b/cps-service/src/test/java/org/onap/cps/TestUtils.java
@@ -0,0 +1,41 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 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;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+
+/**
+ * Common convenience methods for testing.
+ */
+public class TestUtils {
+    /**
+     * Convert a file in the test resource folder to a string.
+     *
+     * @param filename to name of the file in test/resources
+     * @return the content of the file as a String
+     * @throws IOException when there is an IO issue
+     */
+    public static String getResourceFileContent(final String filename) throws IOException {
+        File file = new File(ClassLoader.getSystemClassLoader().getResource(filename).getFile());
+        return new String(Files.readAllBytes(file.toPath()));
+    }
+}
diff --git a/cps-service/src/test/resources/bookstore.json b/cps-service/src/test/resources/bookstore.json
new file mode 100644
index 000000000..44d5d424c
--- /dev/null
+++ b/cps-service/src/test/resources/bookstore.json
@@ -0,0 +1,34 @@
+{
+   "test:bookstore":{
+      "categories":[
+         {
+            "name":"web",
+            "books":[
+               {
+                  "authors":[
+                     "Toine Siebelink","David Lang"
+                  ],
+                  "lang":"en",
+                  "price":"123456",
+                  "pub_year":"2020",
+                  "title":"My first book"
+               }
+            ]
+         },
+         {
+            "name":"art",
+            "books":[
+               {
+                  "authors":[
+                     "Test"
+                  ],
+                  "lang":"en",
+                  "price":"1234",
+                  "pub_year":"2020",
+                  "title":"My 2nd book"
+               }
+            ]
+         }
+      ]
+   }
+}
\ No newline at end of file
diff --git a/cps-service/src/test/resources/bookstore.yang b/cps-service/src/test/resources/bookstore.yang
new file mode 100644
index 000000000..01eac5f33
--- /dev/null
+++ b/cps-service/src/test/resources/bookstore.yang
@@ -0,0 +1,50 @@
+module bookstore {
+    yang-version 1.1;
+
+    namespace "org:onap:ccsdk:sample";
+
+    prefix book-store;
+
+    revision "2020-09-15" {
+        description
+        "Sample Model";
+    }
+
+    typedef year {
+        type uint16 {
+            range "1000..9999";
+        }
+    }
+
+    container bookstore {
+
+    list categories {
+
+        key name;
+
+        leaf name {
+            type string;
+        }
+
+        list books {
+            key title;
+
+            leaf title {
+                type string;
+            }
+            leaf lang {
+                type string;
+            }
+            leaf-list authors {
+                type string;
+            }
+            leaf pub_year {
+                type year;
+            }
+            leaf price {
+                type uint64;
+            }
+        }
+    }
+    }
+}
diff --git a/cps-service/src/test/resources/invalid.yang b/cps-service/src/test/resources/invalid.yang
new file mode 100644
index 000000000..66cfd1079
--- /dev/null
+++ b/cps-service/src/test/resources/invalid.yang
@@ -0,0 +1 @@
+no yang at all!
diff --git a/cps-service/src/test/resources/someOtherFile.txt b/cps-service/src/test/resources/someOtherFile.txt
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/cps-service/src/test/resources/someOtherFile.txt