Javadoc and logging improvement

Added Javadocs and logging for these classes.

Change-Id: I26dd974357cfb9ccaed3f9afd0510dc07e9bc33e
Issue-ID: SO-2052
Signed-off-by: Manamohan <MS00534989@Techmahindra.com>

7 files changed, 219 insertions, 10 deletions

diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIDeleteTasks.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIDeleteTasks.java
index 18ba91263b..15f8c5e4ef 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIDeleteTasks.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIDeleteTasks.java
@@ -80,6 +80,16 @@ public class AAIDeleteTasks {
     @Autowired
     private AAIInstanceGroupResources aaiInstanceGroupResources;
 
+    /**
+     * BPMN access method to delete the VfModule from A&AI.
+     *
+     * It will extract the genericVnf & VfModule from the BBObject.
+     *
+     * Before deleting it set the aaiVfModuleRollback as false & then it will delete the VfModule.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteVfModule(BuildingBlockExecution execution) throws Exception {
         GenericVnf genericVnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
         VfModule vfModule = extractPojosForBB.extractByKey(execution, ResourceKey.VF_MODULE_ID);
@@ -89,10 +99,21 @@ public class AAIDeleteTasks {
             aaiVfModuleResources.deleteVfModule(vfModule, genericVnf);
             execution.setVariable("aaiVfModuleRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteVfModule process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the Vnf from A&AI.
+     *
+     * It will extract the genericVnf from the BBObject.
+     *
+     * Before deleting it set the aaiVnfRollback as false & then it will delete the Vnf.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteVnf(BuildingBlockExecution execution) throws Exception {
         GenericVnf genericVnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
 
@@ -101,79 +122,154 @@ public class AAIDeleteTasks {
             aaiVnfResources.deleteVnf(genericVnf);
             execution.setVariable("aaiVnfRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteVnf process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the ServiceInstance from A&AI.
+     *
+     * It will extract the serviceInstance from the BBObject.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteServiceInstance(BuildingBlockExecution execution) throws Exception {
         try {
             ServiceInstance serviceInstance =
                     extractPojosForBB.extractByKey(execution, ResourceKey.SERVICE_INSTANCE_ID);
             aaiSIResources.deleteServiceInstance(serviceInstance);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteServiceInstance process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
 
     }
 
+    /**
+     * BPMN access method to delete the l3network from A&AI.
+     *
+     * It will extract the l3network from the BBObject.
+     *
+     * After deleting the l3network it set the isRollbackNeeded as true.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteNetwork(BuildingBlockExecution execution) throws Exception {
         try {
             L3Network l3network = extractPojosForBB.extractByKey(execution, ResourceKey.NETWORK_ID);
             aaiNetworkResources.deleteNetwork(l3network);
             execution.setVariable("isRollbackNeeded", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteNetwork process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the Collection from A&AI.
+     *
+     * It will extract the serviceInstance from the BBObject.
+     *
+     * Then it will get the collection from serviceinstance.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteCollection(BuildingBlockExecution execution) throws Exception {
         try {
             ServiceInstance serviceInstance =
                     extractPojosForBB.extractByKey(execution, ResourceKey.SERVICE_INSTANCE_ID);
             aaiNetworkResources.deleteCollection(serviceInstance.getCollection());
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteCollection process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the InstanceGroup from A&AI.
+     *
+     * It will extract the serviceInstance from the BBObject.
+     *
+     * Then it will get the Instance group from serviceInstance.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteInstanceGroup(BuildingBlockExecution execution) throws Exception {
         try {
             ServiceInstance serviceInstance =
                     extractPojosForBB.extractByKey(execution, ResourceKey.SERVICE_INSTANCE_ID);
             aaiNetworkResources.deleteNetworkInstanceGroup(serviceInstance.getCollection().getInstanceGroup());
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteInstanceGroup process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the VolumeGroup from A&AI.
+     *
+     * It will extract the volumeGroup from the BBObject and cloudRegion from execution object .
+     *
+     * Then it will delete from A&AI.
+     *
+     * @param execution
+     * @throws Exception
+     */
     public void deleteVolumeGroup(BuildingBlockExecution execution) {
         try {
             VolumeGroup volumeGroup = extractPojosForBB.extractByKey(execution, ResourceKey.VOLUME_GROUP_ID);
             CloudRegion cloudRegion = execution.getGeneralBuildingBlock().getCloudRegion();
             aaiVolumeGroupResources.deleteVolumeGroup(volumeGroup, cloudRegion);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteVolumeGroup process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the Configuration from A&AI.
+     *
+     * It will extract the configuration from the BBObject.
+     *
+     * Then it will delete from A&AI.
+     *
+     * @param execution
+     */
     public void deleteConfiguration(BuildingBlockExecution execution) {
         try {
             Configuration configuration = extractPojosForBB.extractByKey(execution, ResourceKey.CONFIGURATION_ID);
             aaiConfigurationResources.deleteConfiguration(configuration);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteConfiguration process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * BPMN access method to delete the InstanceGroupVnf from A&AI.
+     *
+     * It will extract the instanceGroup from the BBObject.
+     *
+     * Then it will delete from A&AI.
+     *
+     * @param execution
+     */
     public void deleteInstanceGroupVnf(BuildingBlockExecution execution) {
         try {
             InstanceGroup instanceGroup = extractPojosForBB.extractByKey(execution, ResourceKey.INSTANCE_GROUP_ID);
             aaiInstanceGroupResources.deleteInstanceGroup(instanceGroup);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIDeleteTasks deleteInstanceGroupVnf process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+
     public void deleteNetworkPolicies(BuildingBlockExecution execution) {
         try {
             String fqdns = execution.getVariable(contrailNetworkPolicyFqdnList);
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIUpdateTasks.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIUpdateTasks.java
index 20f4443291..86645391b4 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIUpdateTasks.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/aai/tasks/AAIUpdateTasks.java
@@ -92,6 +92,7 @@ public class AAIUpdateTasks {
                     OrchestrationStatus.ASSIGNED);
             execution.setVariable("aaiServiceInstanceRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusAssignedService", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -108,6 +109,7 @@ public class AAIUpdateTasks {
             aaiServiceInstanceResources.updateOrchestrationStatusServiceInstance(serviceInstance,
                     OrchestrationStatus.ACTIVE);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusActiveService", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -122,6 +124,7 @@ public class AAIUpdateTasks {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVnfResources.updateOrchestrationStatusVnf(vnf, OrchestrationStatus.ASSIGNED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusAssignedVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -136,6 +139,7 @@ public class AAIUpdateTasks {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVnfResources.updateOrchestrationStatusVnf(vnf, OrchestrationStatus.ACTIVE);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusActiveVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -155,6 +159,7 @@ public class AAIUpdateTasks {
             aaiVolumeGroupResources.updateOrchestrationStatusVolumeGroup(volumeGroup, cloudRegion,
                     OrchestrationStatus.ASSIGNED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusAssignedVolumeGroup", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -174,6 +179,7 @@ public class AAIUpdateTasks {
             aaiVolumeGroupResources.updateOrchestrationStatusVolumeGroup(volumeGroup, cloudRegion,
                     OrchestrationStatus.ACTIVE);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusActiveVolumeGroup", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -193,6 +199,7 @@ public class AAIUpdateTasks {
             aaiVolumeGroupResources.updateOrchestrationStatusVolumeGroup(volumeGroup, cloudRegion,
                     OrchestrationStatus.CREATED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusCreatedVolumeGroup", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -215,6 +222,7 @@ public class AAIUpdateTasks {
 
             aaiVolumeGroupResources.updateHeatStackIdVolumeGroup(volumeGroup, cloudRegion);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateHeatStackIdVolumeGroup", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -231,6 +239,7 @@ public class AAIUpdateTasks {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf, OrchestrationStatus.ASSIGNED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusAssignedVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -247,6 +256,7 @@ public class AAIUpdateTasks {
             aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf,
                     OrchestrationStatus.PENDING_ACTIVATION);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusPendingActivationVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -273,6 +283,9 @@ public class AAIUpdateTasks {
                 aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf, OrchestrationStatus.ASSIGNED);
             }
         } catch (Exception ex) {
+            logger.error(
+                    "Exception occurred in AAIUpdateTasks updateOrchestrationStatusAssignedOrPendingActivationVfModule",
+                    ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -281,7 +294,7 @@ public class AAIUpdateTasks {
      * BPMN access method to update status of VfModule to Created in AAI
      *
      * @param execution
-     * 
+     *
      */
     public void updateOrchestrationStatusCreatedVfModule(BuildingBlockExecution execution) {
         try {
@@ -289,6 +302,7 @@ public class AAIUpdateTasks {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf, OrchestrationStatus.CREATED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusCreatedVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -307,6 +321,7 @@ public class AAIUpdateTasks {
             aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf, OrchestrationStatus.CREATED);
             execution.setVariable("aaiDeactivateVfModuleRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusDeactivateVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -346,6 +361,7 @@ public class AAIUpdateTasks {
             L3Network l3Network = extractPojosForBB.extractByKey(execution, ResourceKey.NETWORK_ID);
             updateNetworkAAI(l3Network, status);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateNetwork", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -386,6 +402,7 @@ public class AAIUpdateTasks {
             aaiCollectionResources.updateCollection(copiedNetworkCollection);
             execution.setVariable("aaiNetworkCollectionActivateRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusActiveNetworkCollection", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -403,6 +420,7 @@ public class AAIUpdateTasks {
             aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf, OrchestrationStatus.ACTIVE);
             execution.setVariable("aaiActivateVfModuleRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusActivateVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -423,6 +441,7 @@ public class AAIUpdateTasks {
             vfModule.setHeatStackId(heatStackId);
             aaiVfModuleResources.updateHeatStackIdVfModule(vfModule, vnf);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateHeatStackIdVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -466,6 +485,7 @@ public class AAIUpdateTasks {
 
             execution.setVariable("aaiNetworkActivateRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateNetworkCreated", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -495,6 +515,7 @@ public class AAIUpdateTasks {
                 }
             }
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateNetworkUpdated", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -509,6 +530,7 @@ public class AAIUpdateTasks {
             L3Network l3network = extractPojosForBB.extractByKey(execution, ResourceKey.NETWORK_ID);
             aaiNetworkResources.updateNetwork(l3network);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateObjectNetwork", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -524,6 +546,7 @@ public class AAIUpdateTasks {
                     extractPojosForBB.extractByKey(execution, ResourceKey.SERVICE_INSTANCE_ID);
             aaiServiceInstanceResources.updateServiceInstance(serviceInstance);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateServiceInstance", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -538,6 +561,7 @@ public class AAIUpdateTasks {
             GenericVnf genericVnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVnfResources.updateObjectVnf(genericVnf);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateObjectVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -559,6 +583,7 @@ public class AAIUpdateTasks {
             aaiVfModuleResources.updateOrchestrationStatusVfModule(vfModule, vnf, OrchestrationStatus.ASSIGNED);
             execution.setVariable("aaiDeleteVfModuleRollback", true);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusDeleteVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -574,6 +599,7 @@ public class AAIUpdateTasks {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVfModuleResources.changeAssignVfModule(vfModule, vnf);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateModelVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -589,6 +615,7 @@ public class AAIUpdateTasks {
             aaiConfigurationResources.updateOrchestrationStatusConfiguration(configuration,
                     OrchestrationStatus.ASSIGNED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusAssignFabricConfiguration", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -603,6 +630,8 @@ public class AAIUpdateTasks {
             Configuration configuration = extractPojosForBB.extractByKey(execution, ResourceKey.CONFIGURATION_ID);
             aaiConfigurationResources.updateOrchestrationStatusConfiguration(configuration, OrchestrationStatus.ACTIVE);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusActivateFabricConfiguration",
+                    ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -618,6 +647,8 @@ public class AAIUpdateTasks {
             aaiConfigurationResources.updateOrchestrationStatusConfiguration(configuration,
                     OrchestrationStatus.ASSIGNED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusDeactivateFabricConfiguration",
+                    ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -640,6 +671,7 @@ public class AAIUpdateTasks {
                 aaiVnfResources.updateObjectVnf(copiedGenericVnf);
             }
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateIpv4OamAddressVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -662,6 +694,7 @@ public class AAIUpdateTasks {
                 aaiVnfResources.updateObjectVnf(copiedGenericVnf);
             }
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateManagementV6AddressVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -681,6 +714,7 @@ public class AAIUpdateTasks {
                 aaiVfModuleResources.updateContrailServiceInstanceFqdnVfModule(vfModule, vnf);
             }
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateContrailServiceInstanceFqdnVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -695,6 +729,7 @@ public class AAIUpdateTasks {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVnfResources.updateOrchestrationStatusVnf(vnf, OrchestrationStatus.CONFIGASSIGNED);
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusConfigAssignedVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
@@ -704,12 +739,13 @@ public class AAIUpdateTasks {
      *
      * @param execution
      */
-    public void updateOrchestrationStausConfigDeployConfigureVnf(BuildingBlockExecution execution) {
+    public void updateOrchestrationStatusConfigDeployConfigureVnf(BuildingBlockExecution execution) {
         try {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVnfResources.updateOrchestrationStatusVnf(vnf, OrchestrationStatus.CONFIGURE);
 
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusConfigDeployConfigureVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
 
@@ -720,12 +756,13 @@ public class AAIUpdateTasks {
      *
      * @param execution
      */
-    public void updateOrchestrationStausConfigDeployConfiguredVnf(BuildingBlockExecution execution) {
+    public void updateOrchestrationStatusConfigDeployConfiguredVnf(BuildingBlockExecution execution) {
         try {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
             aaiVnfResources.updateOrchestrationStatusVnf(vnf, OrchestrationStatus.CONFIGURED);
 
         } catch (Exception ex) {
+            logger.error("Exception occurred in AAIUpdateTasks updateOrchestrationStatusConfigDeployConfiguredVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
 
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/ConfigDeployVnf.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/ConfigDeployVnf.java
index cdbe0db57c..6a8058938f 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/ConfigDeployVnf.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/ConfigDeployVnf.java
@@ -62,7 +62,7 @@ public class ConfigDeployVnf {
      * @param execution
      */
     public void updateAAIConfigure(BuildingBlockExecution execution) {
-        aaiUpdateTask.updateOrchestrationStausConfigDeployConfigureVnf(execution);
+        aaiUpdateTask.updateOrchestrationStatusConfigDeployConfigureVnf(execution);
 
     }
 
@@ -129,7 +129,7 @@ public class ConfigDeployVnf {
      * @param execution
      */
     public void updateAAIConfigured(BuildingBlockExecution execution) {
-        aaiUpdateTask.updateOrchestrationStausConfigDeployConfiguredVnf(execution);
+        aaiUpdateTask.updateOrchestrationStatusConfigDeployConfiguredVnf(execution);
 
     }
 }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/UnassignVnf.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/UnassignVnf.java
index e51774c12c..0afca71b99 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/UnassignVnf.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/flowspecific/tasks/UnassignVnf.java
@@ -30,12 +30,15 @@ import org.onap.so.bpmn.servicedecomposition.modelinfo.ModelInfoInstanceGroup;
 import org.onap.so.bpmn.servicedecomposition.tasks.ExtractPojosForBB;
 import org.onap.so.client.exception.ExceptionBuilder;
 import org.onap.so.client.orchestration.AAIInstanceGroupResources;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 
 @Component()
 public class UnassignVnf {
+    private static final Logger logger = LoggerFactory.getLogger(UnassignVnf.class);
     @Autowired
     private ExceptionBuilder exceptionUtil;
     @Autowired
@@ -45,6 +48,17 @@ public class UnassignVnf {
     @Autowired
     private AAIObjectInstanceNameGenerator aaiObjectInstanceNameGenerator;
 
+    /**
+     * BPMN access method to deleting instanceGroup in AAI.
+     *
+     * It will extract the vnf from BBobject ,It will get the instance group from the vnf and add it into a list.
+     *
+     * Then iterate that list and check the ModelInfoInstanceGroup type.
+     *
+     * Then it will delete that.
+     *
+     * @param execution
+     */
     public void deleteInstanceGroups(BuildingBlockExecution execution) {
         try {
             GenericVnf vnf = extractPojosForBB.extractByKey(execution, ResourceKey.GENERIC_VNF_ID);
@@ -56,6 +70,7 @@ public class UnassignVnf {
                 }
             }
         } catch (Exception ex) {
+            logger.error("Exception occurred in UnassignVnf deleteInstanceGroups", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCActivateTasks.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCActivateTasks.java
index b85e33144f..f61b40ad23 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCActivateTasks.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCActivateTasks.java
@@ -52,6 +52,7 @@ import org.springframework.stereotype.Component;
 @Component
 public class SDNCActivateTasks extends AbstractSDNCTask {
 
+    private static final Logger logger = LoggerFactory.getLogger(SDNCActivateTasks.class);
     public static final String SDNC_REQUEST = "SDNCRequest";
     @Autowired
     private SDNCVnfResources sdncVnfResources;
@@ -66,6 +67,13 @@ public class SDNCActivateTasks extends AbstractSDNCTask {
     @Autowired
     private Environment env;
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object.
+     *
+     * Which is used for activate the vnf.
+     *
+     * @param execution
+     */
     public void activateVnf(BuildingBlockExecution execution) {
         try {
             GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
@@ -82,13 +90,14 @@ public class SDNCActivateTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.VNF);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCActivateTasks activateVnf process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
     /**
      * BPMN access method to perform Assign action on SDNC for L3Network
-     * 
+     *
      * @param execution
      * @throws BBObjectNotFoundException
      */
@@ -112,6 +121,13 @@ public class SDNCActivateTasks extends AbstractSDNCTask {
         }
     }
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object.
+     *
+     * Which is used for activate the activateVfModule.
+     *
+     * @param execution
+     */
     public void activateVfModule(BuildingBlockExecution execution) {
         GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
         RequestContext requestContext = gBBInput.getRequestContext();
@@ -131,6 +147,7 @@ public class SDNCActivateTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.VFMODULE);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCActivateTasks activateVfModule process", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCDeactivateTasks.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCDeactivateTasks.java
index 3c42f76d73..96b656ff95 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCDeactivateTasks.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCDeactivateTasks.java
@@ -53,6 +53,7 @@ import org.springframework.stereotype.Component;
 @Component
 public class SDNCDeactivateTasks extends AbstractSDNCTask {
 
+    private static final Logger logger = LoggerFactory.getLogger(SDNCDeactivateTasks.class);
     public static final String SDNC_REQUEST = "SDNCRequest";
     @Autowired
     private SDNCNetworkResources sdncNetworkResources;
@@ -69,6 +70,12 @@ public class SDNCDeactivateTasks extends AbstractSDNCTask {
     @Autowired
     private Environment env;
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object. Which is used for deactivate
+     * VfModule.
+     *
+     * @param execution
+     */
     public void deactivateVfModule(BuildingBlockExecution execution) {
         try {
             GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
@@ -86,13 +93,14 @@ public class SDNCDeactivateTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.VFMODULE);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCDeactivateTasks deactivateVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
     /**
      * BPMN access method to perform Service Topology Deactivate action on SDNC for Vnf
-     * 
+     *
      * @param execution
      * @throws Exception
      */
@@ -113,15 +121,16 @@ public class SDNCDeactivateTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.VNF);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCDeactivateTasks deactivateVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
     /*
      * BPMN access method to perform Service Topology Deactivate action on SDNC for Service Instance
-     * 
+     *
      * @param execution
-     * 
+     *
      * @throws Exception
      */
     public void deactivateServiceInstance(BuildingBlockExecution execution) throws Exception {
@@ -138,13 +147,14 @@ public class SDNCDeactivateTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.SERVICE);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCDeactivateTasks deactivateServiceInstance", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
     /**
      * BPMN access method to invoke deactivate on a L3Network object
-     * 
+     *
      * @param execution
      */
     public void deactivateNetwork(BuildingBlockExecution execution) {
@@ -163,6 +173,7 @@ public class SDNCDeactivateTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.NETWORK);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCDeactivateTasks deactivateNetwork", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
diff --git a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCUnassignTasks.java b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCUnassignTasks.java
index e3c9785ab2..4817ba8b61 100644
--- a/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCUnassignTasks.java
+++ b/bpmn/so-bpmn-tasks/src/main/java/org/onap/so/bpmn/infrastructure/sdnc/tasks/SDNCUnassignTasks.java
@@ -53,6 +53,7 @@ import org.springframework.stereotype.Component;
 @Component
 public class SDNCUnassignTasks extends AbstractSDNCTask {
 
+    private static final Logger logger = LoggerFactory.getLogger(SDNCUnassignTasks.class);
     public static final String SDNC_REQUEST = "SDNCRequest";
     @Autowired
     private SDNCServiceInstanceResources sdncSIResources;
@@ -69,6 +70,13 @@ public class SDNCUnassignTasks extends AbstractSDNCTask {
     @Autowired
     private Environment env;
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object.
+     *
+     * Which is used for unassign the ServiceInstance.
+     *
+     * @param execution
+     */
     public void unassignServiceInstance(BuildingBlockExecution execution) {
         try {
             GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
@@ -83,10 +91,18 @@ public class SDNCUnassignTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.SERVICE);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCUnassignTasks unassignServiceInstance", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object.
+     *
+     * Which is used for unassign the VfModule.
+     *
+     * @param execution
+     */
     public void unassignVfModule(BuildingBlockExecution execution) {
         try {
             GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
@@ -102,10 +118,18 @@ public class SDNCUnassignTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.VFMODULE);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCUnassignTasks unassignVfModule", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object.
+     *
+     * Which is used for unassign the Vnf.
+     *
+     * @param execution
+     */
     public void unassignVnf(BuildingBlockExecution execution) {
         try {
             GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
@@ -122,10 +146,18 @@ public class SDNCUnassignTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.VNF);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCUnassignTasks unassignVnf", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }
 
+    /**
+     * This method is used to prepare a SDNC request and set it to the execution Object.
+     *
+     * Which is used for unassign the Network.
+     *
+     * @param execution
+     */
     public void unassignNetwork(BuildingBlockExecution execution) throws Exception {
         try {
             GeneralBuildingBlock gBBInput = execution.getGeneralBuildingBlock();
@@ -144,6 +176,7 @@ public class SDNCUnassignTasks extends AbstractSDNCTask {
             sdncRequest.setTopology(SDNCTopology.NETWORK);
             execution.setVariable(SDNC_REQUEST, sdncRequest);
         } catch (Exception ex) {
+            logger.error("Exception occurred in SDNCUnassignTasks unassignNetwork", ex);
             exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex);
         }
     }