Added ETSI Delete VNF BB

Change-Id: Ie82734f25468b75d9b4ab3096639a9afdf6fe2c1
Issue-ID: SO-1632
Signed-off-by: Lathish <lathishbabu.ganesan@est.tech>

5 files changed, 199 insertions, 69 deletions

diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java
index 667ac133af..0153b4b3f9 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/Constants.java
@@ -25,21 +25,20 @@ package org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks;
  */
 public class Constants {
 
-    public static final String CREATE_VNF_REQUEST_PARAM_NAME = "createVnfRequest";
-    public static final String CREATE_VNF_RESPONSE_PARAM_NAME = "createVnfResponse";
-    
-    public static final String INPUT_PARAMETER = "inputParameter";
+  public static final String CREATE_VNF_REQUEST_PARAM_NAME = "createVnfRequest";
+  public static final String CREATE_VNF_RESPONSE_PARAM_NAME = "createVnfResponse";
+  public static final String INPUT_PARAMETER = "inputParameter";
+  public static final String DELETE_VNF_RESPONSE_PARAM_NAME = "deleteVnfResponse";
 
-    public static final String DOT = ".";
-    public static final String UNDERSCORE = "_";
-    public static final String SPACE = "\\s+";
+  public static final String DOT = ".";
+  public static final String UNDERSCORE = "_";
+  public static final String SPACE = "\\s+";
 
-    public static final String VNFM_ADAPTER_DEFAULT_URL = "http://so-vnfm-adapter.onap:9092/so/vnfm-adapter/v1/";
-    public static final String VNFM_ADAPTER_DEFAULT_AUTH = "Basic dm5mbTpwYXNzd29yZDEk";
-    
-    public static final String FORWARD_SLASH = "/";
-    public static final String PRELOAD_VNFS_URL = "/restconf/config/VNF-API:preload-vnfs/vnf-preload-list/";
+  public static final String VNFM_ADAPTER_DEFAULT_URL = "http://so-vnfm-adapter.onap:9092/so/vnfm-adapter/v1/";
+  public static final String VNFM_ADAPTER_DEFAULT_AUTH = "Basic dm5mbTpwYXNzd29yZDEk";
 
+  public static final String FORWARD_SLASH = "/";
+  public static final String PRELOAD_VNFS_URL = "/restconf/config/VNF-API:preload-vnfs/vnf-preload-list/";
 
-    private Constants() {}
+  private Constants() {}
 }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/EtsiVnfDeleteTask.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/EtsiVnfDeleteTask.java
new file mode 100644
index 0000000000..857c5cb6fe
--- /dev/null
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/EtsiVnfDeleteTask.java
@@ -0,0 +1,84 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 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.so.bpmn.infrastructure.adapter.vnfm.tasks;
+
+import static org.onap.so.bpmn.servicedecomposition.entities.ResourceKey.GENERIC_VNF_ID;
+import org.onap.so.bpmn.common.BuildingBlockExecution;
+import org.onap.so.bpmn.servicedecomposition.bbobjects.GenericVnf;
+import org.onap.so.bpmn.servicedecomposition.tasks.ExtractPojosForBB;
+import org.onap.so.client.exception.ExceptionBuilder;
+import org.onap.vnfmadapter.v1.model.DeleteVnfResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import com.google.common.base.Optional;
+
+/**
+ *
+ * @author Lathishbabu Ganesan (lathishbabu.ganesan@est.tech)
+ */
+@Component
+public class EtsiVnfDeleteTask {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(EtsiVnfDeleteTask.class);
+  private final ExtractPojosForBB extractPojosForBB;
+  private final ExceptionBuilder exceptionUtil;
+  private final VnfmAdapterServiceProvider vnfmAdapterServiceProvider;
+
+  @Autowired
+  public EtsiVnfDeleteTask(final ExceptionBuilder exceptionUtil, final ExtractPojosForBB extractPojosForBB,
+      final VnfmAdapterServiceProvider vnfmAdapterServiceProvider) {
+    this.exceptionUtil = exceptionUtil;
+    this.extractPojosForBB = extractPojosForBB;
+    this.vnfmAdapterServiceProvider = vnfmAdapterServiceProvider;
+  }
+
+  /**
+   * Invoke VNFM adapter to delete the VNF
+   *
+   * @param execution {@link org.onap.so.bpmn.common.DelegateExecutionImpl}
+   */
+  public void invokeVnfmAdapter(final BuildingBlockExecution execution) {
+    try {
+      LOGGER.debug("Executing invokeVnfmAdapter  ...");
+      final GenericVnf vnf = extractPojosForBB.extractByKey(execution, GENERIC_VNF_ID);
+
+      final Optional<DeleteVnfResponse> response = vnfmAdapterServiceProvider.invokeDeleteRequest(vnf.getVnfId());
+
+      if (!response.isPresent()) {
+        final String errorMessage = "Unexpected error while processing delete request";
+        LOGGER.error(errorMessage);
+        exceptionUtil.buildAndThrowWorkflowException(execution, 1211, errorMessage);
+      }
+
+      final DeleteVnfResponse vnfResponse = response.get();
+
+      LOGGER.debug("Vnf delete response: {}", vnfResponse);
+      execution.setVariable(Constants.DELETE_VNF_RESPONSE_PARAM_NAME, vnfResponse);
+
+      LOGGER.debug("Finished executing invokeVnfmAdapter ...");
+    } catch (final Exception exception) {
+      LOGGER.error("Unable to invoke delete request", exception);
+      exceptionUtil.buildAndThrowWorkflowException(execution, 1212, exception);
+    }
+  }
+}
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProvider.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProvider.java
index 02303ef09d..a76a4bf3c1 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProvider.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProvider.java
@@ -22,17 +22,19 @@ package org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks;
 
 import org.onap.vnfmadapter.v1.model.CreateVnfRequest;
 import org.onap.vnfmadapter.v1.model.CreateVnfResponse;
-
+import org.onap.vnfmadapter.v1.model.DeleteVnfResponse;
 import com.google.common.base.Optional;
 
 
 /**
  * Provide a service which interacts with VNFM adapter for instantiating, monitoring VNF
- * 
+ *
  * @author waqas.ikram@est.tech
  */
 public interface VnfmAdapterServiceProvider {
 
-    Optional<CreateVnfResponse> invokeCreateInstantiationRequest(final String vnfId, final CreateVnfRequest request);
+  Optional<CreateVnfResponse> invokeCreateInstantiationRequest(final String vnfId, final CreateVnfRequest request);
+
+  Optional<DeleteVnfResponse> invokeDeleteRequest(final String vnfId);
 
 }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProviderImpl.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProviderImpl.java
index afdcccfd36..f727423e85 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProviderImpl.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterServiceProviderImpl.java
@@ -25,13 +25,13 @@ import org.onap.so.rest.exceptions.RestProcessingException;
 import org.onap.so.rest.service.HttpRestServiceProvider;
 import org.onap.vnfmadapter.v1.model.CreateVnfRequest;
 import org.onap.vnfmadapter.v1.model.CreateVnfResponse;
+import org.onap.vnfmadapter.v1.model.DeleteVnfResponse;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
-
 import com.google.common.base.Optional;
 
 /**
@@ -40,50 +40,85 @@ import com.google.common.base.Optional;
 @Service
 public class VnfmAdapterServiceProviderImpl implements VnfmAdapterServiceProvider {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(VnfmAdapterServiceProviderImpl.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(VnfmAdapterServiceProviderImpl.class);
+
+  private final VnfmAdapterUrlProvider urlProvider;
+  private final HttpRestServiceProvider httpServiceProvider;
+
+  @Autowired
+  public VnfmAdapterServiceProviderImpl(final VnfmAdapterUrlProvider urlProvider,
+      final HttpRestServiceProvider httpServiceProvider) {
+    this.urlProvider = urlProvider;
+    this.httpServiceProvider = httpServiceProvider;
+  }
+
+  @Override
+  public Optional<CreateVnfResponse> invokeCreateInstantiationRequest(final String vnfId,
+      final CreateVnfRequest request) {
+    try {
+      final String url = urlProvider.getCreateInstantiateUrl(vnfId);
+
+      final ResponseEntity<CreateVnfResponse> response =
+          httpServiceProvider.postHttpRequest(request, url, CreateVnfResponse.class);
+
+      final HttpStatus httpStatus = response.getStatusCode();
+      if (!(httpStatus.equals(HttpStatus.ACCEPTED)) && !(httpStatus.equals(HttpStatus.OK))) {
+        LOGGER.error("Unable to invoke HTTP POST using URL: {}, Response Code: {}", url, httpStatus.value());
+        return Optional.absent();
+      }
+
+      if (!response.hasBody()) {
+        LOGGER.error("Received response without body: {}", response);
+        return Optional.absent();
+      }
+
+      final CreateVnfResponse createVnfResponse = response.getBody();
 
-    private final VnfmAdapterUrlProvider urlProvider;
-    private final HttpRestServiceProvider httpServiceProvider;
+      if (createVnfResponse.getJobId() == null || createVnfResponse.getJobId().isEmpty()) {
+        LOGGER.error("Received invalid instantiation response: {}", response);
+        return Optional.absent();
+      }
 
-    @Autowired
-    public VnfmAdapterServiceProviderImpl(final VnfmAdapterUrlProvider urlProvider,
-            final HttpRestServiceProvider httpServiceProvider) {
-        this.urlProvider = urlProvider;
-        this.httpServiceProvider = httpServiceProvider;
+      return Optional.of(createVnfResponse);
+    } catch (final RestProcessingException | InvalidRestRequestException httpInvocationException) {
+      LOGGER.error("Unexpected error while processing create and instantiation request", httpInvocationException);
+      return Optional.absent();
     }
 
-    @Override
-    public Optional<CreateVnfResponse> invokeCreateInstantiationRequest(final String vnfId,
-            final CreateVnfRequest request) {
-        try {
-            final String url = urlProvider.getCreateInstantiateUrl(vnfId);
+  }
 
-            final ResponseEntity<CreateVnfResponse> response =
-                    httpServiceProvider.postHttpRequest(request, url, CreateVnfResponse.class);
+  @Override
+  public Optional<DeleteVnfResponse> invokeDeleteRequest(final String vnfId) {
+    try {
+      final String url = urlProvider.getDeleteUrl(vnfId);
+      LOGGER.debug("Will send request to vnfm adapter using url: {}", url);
 
-            final HttpStatus httpStatus = response.getStatusCode();
-            if (!(httpStatus.equals(HttpStatus.ACCEPTED)) && !(httpStatus.equals(HttpStatus.OK))) {
-                LOGGER.error("Unable to invoke HTTP POST using URL: {}, Response Code: {}", url, httpStatus.value());
-                return Optional.absent();
-            }
+      final ResponseEntity<DeleteVnfResponse> response =
+          httpServiceProvider.deleteHttpRequest(url, DeleteVnfResponse.class);
 
-            if (!response.hasBody()) {
-                LOGGER.error("Received response without body: {}", response);
-                return Optional.absent();
-            }
+      LOGGER.debug("Response received: ", response);
 
-            final CreateVnfResponse createVnfResponse = response.getBody();
+      final HttpStatus httpStatus = response.getStatusCode();
 
-            if (createVnfResponse.getJobId() == null || createVnfResponse.getJobId().isEmpty()) {
-                LOGGER.error("Received invalid instantiation response: {}", response);
-                return Optional.absent();
-            }
+      if (!(httpStatus.equals(HttpStatus.ACCEPTED)) && !(httpStatus.equals(HttpStatus.OK))) {
+        LOGGER.error("Unable to invoke HTTP DELETE using URL: {}, Response Code: {}", url, httpStatus.value());
+        return Optional.absent();
+      }
 
-            return Optional.of(createVnfResponse);
-        } catch (final RestProcessingException | InvalidRestRequestException httpInvocationException) {
-            LOGGER.error("Unexpected error while processing create and instantiation request", httpInvocationException);
-            return Optional.absent();
-        }
+      if (!response.hasBody()) {
+        LOGGER.error("Received response without body: {}", response);
+        return Optional.absent();
+      }
+      final DeleteVnfResponse deleteVnfResponse = response.getBody();
 
+      if (deleteVnfResponse.getJobId() == null || deleteVnfResponse.getJobId().isEmpty()) {
+        LOGGER.error("Received invalid delete response: {}", response);
+        return Optional.absent();
+      }
+      return Optional.of(deleteVnfResponse);
+    } catch (final RestProcessingException | InvalidRestRequestException httpInvocationException) {
+      LOGGER.error("Unexpected error while processing delete request", httpInvocationException);
+      return Optional.absent();
     }
+  }
 }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterUrlProvider.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterUrlProvider.java
index 03ee0712e7..61063fe90e 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterUrlProvider.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/adapter/vnfm/tasks/VnfmAdapterUrlProvider.java
@@ -21,7 +21,6 @@
 package org.onap.so.bpmn.infrastructure.adapter.vnfm.tasks;
 
 import java.net.URI;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.web.util.UriComponentsBuilder;
@@ -36,23 +35,34 @@ import org.springframework.web.util.UriComponentsBuilder;
 @Service
 public class VnfmAdapterUrlProvider {
 
-    private final URI baseUri;
-
-    @Autowired
-    public VnfmAdapterUrlProvider(final VnfmBasicHttpConfigProvider etsiVnfmAdapter) {
-        this.baseUri = UriComponentsBuilder.fromHttpUrl(etsiVnfmAdapter.getUrl()).build().toUri();
-    }
-
-    /**
-     * Get VNFM create and instantiate URL
-     * 
-     * @param vnfId The identifier of the VNF. This must be the vnf-id of an existing generic-vnf in
-     *        AAI.
-     * @return VNFM create and instantiate URL
-     */
-    public String getCreateInstantiateUrl(final String vnfId) {
-        return UriComponentsBuilder.fromUri(baseUri).pathSegment("vnfs").pathSegment(vnfId).build().toString();
-    }
+  private final URI baseUri;
+
+  @Autowired
+  public VnfmAdapterUrlProvider(final VnfmBasicHttpConfigProvider etsiVnfmAdapter) {
+    this.baseUri = UriComponentsBuilder.fromHttpUrl(etsiVnfmAdapter.getUrl()).build().toUri();
+  }
+
+  /**
+   * Get VNFM create and instantiate URL
+   * 
+   * @param vnfId The identifier of the VNF. This must be the vnf-id of an existing generic-vnf in
+   *        AAI.
+   * @return VNFM create and instantiate URL
+   */
+  public String getCreateInstantiateUrl(final String vnfId) {
+    return UriComponentsBuilder.fromUri(baseUri).pathSegment("vnfs").pathSegment(vnfId).build().toString();
+  }
+
+  /**
+   * Get VNFM delete URL
+   * 
+   * @param vnfId The identifier of the VNF. This must be the vnf-id of an existing generic-vnf in
+   *        AAI.
+   * @return VNFM delete URL
+   */
+  public String getDeleteUrl(final String vnfId) {
+    return UriComponentsBuilder.fromUri(baseUri).pathSegment("vnfs").pathSegment(vnfId).build().toString();
+  }
 
 
 }