VSE: Create an anchor in the given dataspace

Issue-ID: CPS-42
https://jira.onap.org/browse/CPS-42

Signed-off-by: Rishi Chail <rishi.chail@est.tech>
Change-Id: If67be6f13889808da4d9fe830595766af67e4fdf

7 files changed, 168 insertions, 16 deletions

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
index 4d94a46547..6b59949ca0 100644..100755
--- a/cps-service/src/main/java/org/onap/cps/api/CpService.java
+++ b/cps-service/src/main/java/org/onap/cps/api/CpService.java
@@ -21,9 +21,9 @@
 package org.onap.cps.api;
 
 import java.io.File;
-import java.io.IOException;
+import org.onap.cps.api.model.AnchorDetails;
+import org.onap.cps.exceptions.CpsValidationException;
 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.
@@ -36,7 +36,7 @@ public interface CpService {
      * @param yangModelContent the input stream
      * @return the schema context
      */
-    SchemaContext parseAndValidateModel(final String yangModelContent);
+    SchemaContext parseAndValidateModel(String yangModelContent);
 
     /**
      * Parse and validate a file representing a yang model to generate a schema context.
@@ -44,7 +44,7 @@ public interface CpService {
      * @param yangModelFile the yang file
      * @return the schema context
      */
-    SchemaContext parseAndValidateModel(final File yangModelFile);
+    SchemaContext parseAndValidateModel(File yangModelFile);
 
     /**
      * Store schema context for a yang model.
@@ -52,7 +52,7 @@ public interface CpService {
      * @param schemaContext the schema context
      * @param dataspaceName the dataspace name
      */
-    void storeSchemaContext(final SchemaContext schemaContext, final String dataspaceName);
+    void storeSchemaContext(SchemaContext schemaContext, String dataspaceName);
 
     /**
      * Store the JSON structure in the database.
@@ -60,7 +60,7 @@ public interface CpService {
      * @param jsonStructure the JSON structure.
      * @return entity ID.
      */
-    Integer storeJsonStructure(final String jsonStructure);
+    Integer storeJsonStructure(String jsonStructure);
 
     /**
      * Read a JSON Object using the object identifier.
@@ -68,12 +68,21 @@ public interface CpService {
      * @param jsonObjectId the JSON object identifier.
      * @return the JSON structure.
      */
-    String getJsonById(final int jsonObjectId);
+    String getJsonById(int jsonObjectId);
 
     /**
      * Delete a JSON Object using the object identifier.
      *
      * @param jsonObjectId the JSON object identifier.
      */
-    void deleteJsonById(final int jsonObjectId);
+    void deleteJsonById(int jsonObjectId);
+
+    /**
+     * Create an anchor using provided anchorDetails object.
+     *
+     * @param anchorDetails the anchor details object.
+     * @return the anchor name.
+     * @throws CpsValidationException if input data is invalid.
+     */
+    String createAnchor(AnchorDetails anchorDetails);
 }
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
index c33746e861..8cdadbeb55 100644..100755
--- 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
@@ -26,9 +26,11 @@ import java.io.FileWriter;
 import java.io.IOException;
 import java.util.Optional;
 import org.onap.cps.api.CpService;
+import org.onap.cps.api.model.AnchorDetails;
 import org.onap.cps.exceptions.CpsException;
 import org.onap.cps.exceptions.CpsValidationException;
 import org.onap.cps.spi.DataPersistencyService;
+import org.onap.cps.spi.FragmentPersistenceService;
 import org.onap.cps.spi.ModelPersistencyService;
 import org.onap.cps.utils.YangUtils;
 import org.opendaylight.yangtools.yang.common.Revision;
@@ -48,6 +50,9 @@ public class CpServiceImpl implements CpService {
     @Autowired
     private DataPersistencyService dataPersistencyService;
 
+    @Autowired
+    private FragmentPersistenceService fragmentPersistenceService;
+
     @Override
     public final SchemaContext parseAndValidateModel(final String yangModelContent) {
 
@@ -57,7 +62,7 @@ public class CpServiceImpl implements CpService {
                 writer.write(yangModelContent);
             }
             return parseAndValidateModel(tempFile);
-        } catch (IOException e) {
+        } catch (final IOException e) {
             throw new CpsException(e);
         }
     }
@@ -66,9 +71,9 @@ public class CpServiceImpl implements CpService {
     public final SchemaContext parseAndValidateModel(final File yangModelFile) {
         try {
             return YangUtils.parseYangModelFile(yangModelFile);
-        } catch (YangParserException e) {
+        } catch (final YangParserException e) {
             throw new CpsValidationException("Yang file validation failed", e.getMessage());
-        } catch (IOException e) {
+        } catch (final IOException e) {
             throw new CpsException(e);
         }
     }
@@ -91,10 +96,15 @@ public class CpServiceImpl implements CpService {
     @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;
+            final Optional<Revision> optionalRevision = module.getRevision();
+            final String revisionValue = optionalRevision.map(Object::toString).orElse(null);
             modelPersistencyService.storeModule(module.getNamespace().toString(), module.toString(),
                 revisionValue, dataspaceName);
         }
     }
-}
+
+    @Override
+    public String createAnchor(AnchorDetails anchorDetails) {
+        return fragmentPersistenceService.createAnchor(anchorDetails);
+    }
+}
\ No newline at end of file
diff --git a/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java b/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java
new file mode 100755
index 0000000000..576168ae75
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java
@@ -0,0 +1,42 @@
+/*-

+ * ============LICENSE_START=======================================================

+ *  Copyright (C) 2020 Nordix Foundation. 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.model;

+

+import java.io.Serializable;

+import lombok.Getter;

+import lombok.NoArgsConstructor;

+import lombok.Setter;

+

+@Getter

+@Setter

+@NoArgsConstructor

+public class AnchorDetails implements Serializable {

+

+    private static final long serialVersionUID = 1464791260718603291L;

+

+    private String anchorName;

+

+    private String dataspace;

+

+    private String namespace;

+

+    private String revision;

+}
\ No newline at end of file
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
index b54453cd90..4dd19dd82b 100644
--- a/cps-service/src/main/java/org/onap/cps/exceptions/CpsException.java
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsException.java
@@ -20,13 +20,14 @@
 package org.onap.cps.exceptions;
 
 import lombok.Getter;
-import org.springframework.core.NestedExceptionUtils;
 
 /**
  * CP Service exception.
  */
 public class CpsException extends RuntimeException {
 
+    private static final long serialVersionUID = 5573438585188332404L;
+
     @Getter
     String 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
index f44fe806cf..4613da8f23 100644
--- a/cps-service/src/main/java/org/onap/cps/exceptions/CpsNotFoundException.java
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsNotFoundException.java
@@ -19,13 +19,14 @@
 
 package org.onap.cps.exceptions;
 
-import lombok.Getter;
 
 /**
  * CP Service exception. Indicates the requested data being absent.
  */
 public class CpsNotFoundException extends CpsException {
 
+    private static final long serialVersionUID = -1852996415384288431L;
+
     /**
      * Constructor.
      *
diff --git a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
new file mode 100755
index 0000000000..48dbb0cc25
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
@@ -0,0 +1,34 @@
+/*-

+ * ============LICENSE_START=======================================================

+ *  Copyright (C) 2020 Nordix Foundation. 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;

+

+import org.onap.cps.api.model.AnchorDetails;

+

+public interface FragmentPersistenceService {

+

+    /**

+     * Create an Anchor.

+     *

+     * @param anchorDetails the anchorDetails object.

+     * @return the anchor name.

+     */

+    String createAnchor(AnchorDetails anchorDetails);

+}

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
index 5f42810bd5..3c51cca597 100644..100755
--- 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
@@ -21,8 +21,11 @@
 package org.onap.cps.api.impl
 
 import org.onap.cps.TestUtils
+import org.onap.cps.api.model.AnchorDetails
+import org.onap.cps.exceptions.CpsNotFoundException
 import org.onap.cps.exceptions.CpsValidationException
 import org.onap.cps.spi.DataPersistencyService
+import org.onap.cps.spi.FragmentPersistenceService
 import org.opendaylight.yangtools.yang.common.Revision
 import org.opendaylight.yangtools.yang.model.api.SchemaContext
 import spock.lang.Specification
@@ -30,10 +33,12 @@ import spock.lang.Specification
 class CpServiceImplSpec extends Specification {
 
     def mockDataPersistencyService = Mock(DataPersistencyService)
+    def mockFragmentPersistenceService = Mock(FragmentPersistenceService)
     def objectUnderTest = new CpServiceImpl()
 
     def setup() {
         objectUnderTest.dataPersistencyService = mockDataPersistencyService
+        objectUnderTest.fragmentPersistenceService = mockFragmentPersistenceService
     }
 
     def 'Cps Service provides to its client the id assigned by the system when storing a data structure'() {
@@ -113,4 +118,54 @@ class CpServiceImplSpec extends Specification {
         then: 'the same exception is thrown by CPS'
             thrown(IllegalStateException)
     }
+
+    def 'Create an anchor with a non-existant dataspace'(){
+        given: 'that the dataspace does not exist service throws an exception'
+            AnchorDetails anchorDetails = new AnchorDetails()
+            anchorDetails.setDataspace('dummyDataspace')
+            mockFragmentPersistenceService.createAnchor(anchorDetails) >> {throw new CpsValidationException(_ as String, _ as String)}
+        when: 'we try to create a anchor with a non-existant dataspace'
+            objectUnderTest.createAnchor(anchorDetails)
+        then: 'the same exception is thrown by CPS'
+            thrown(CpsValidationException)
+    }
+
+    def 'Create an anchor with invalid dataspace, namespace and revision'(){
+        given: 'that the dataspace, namespace and revison combination does not exist service throws an exception'
+            AnchorDetails anchorDetails = new AnchorDetails()
+            anchorDetails.setDataspace('dummyDataspace')
+            anchorDetails.setNamespace('dummyNamespace')
+            anchorDetails.setRevision('dummyRevision')
+            mockFragmentPersistenceService.createAnchor(anchorDetails) >> {throw new CpsValidationException(_ as String, _ as String)}
+        when: 'we try to create a anchor with a non-existant dataspace, namespace and revison combination'
+            objectUnderTest.createAnchor(anchorDetails)
+        then: 'the same exception is thrown by CPS'
+            thrown(CpsValidationException)
+    }
+
+    def 'Create a duplicate anchor'(){
+        given: 'that the anchor already exist service throws an exception'
+            AnchorDetails anchorDetails = new AnchorDetails()
+            anchorDetails.setDataspace('dummyDataspace')
+            anchorDetails.setNamespace('dummyNamespace')
+            anchorDetails.setRevision('dummyRevision')
+            anchorDetails.setRevision('dummyAnchorName')
+            mockFragmentPersistenceService.createAnchor(anchorDetails) >> {throw new CpsValidationException(_ as String, _ as String)}
+        when: 'we try to create a duplicate anchor'
+            objectUnderTest.createAnchor(anchorDetails)
+        then: 'the same exception is thrown by CPS'
+            thrown(CpsValidationException)
+    }
+
+    def 'Create an anchor with supplied anchor name, dataspace, namespace and revision'(){
+        given: 'that the anchor does not pre-exist service creates an anchor'
+            AnchorDetails anchorDetails = new AnchorDetails()
+            anchorDetails.setDataspace('dummyDataspace')
+            anchorDetails.setNamespace('dummyNamespace')
+            anchorDetails.setRevision('dummyRevision')
+            anchorDetails.setRevision('dummyAnchorName')
+            mockFragmentPersistenceService.createAnchor(anchorDetails) >> 'dummyAnchorName'
+        expect: 'anchor name is returned by service'
+            objectUnderTest.createAnchor(anchorDetails) == 'dummyAnchorName'
+    }
 }
\ No newline at end of file