Add directed graph reterive and execution service.

Change-Id: Ia31af4d14e38e6229166cda0f39fa090764ef1cb
Issue-ID: CCSDK-672
Signed-off-by: Muthuramalingam, Brinda Santh(bs2796) <bs2796@att.com>

3 files changed, 81 insertions, 4 deletions

diff --git a/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintDGExecutionService.kt b/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintDGExecutionService.kt
new file mode 100644
index 000000000..993f10eef
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintDGExecutionService.kt
@@ -0,0 +1,71 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.
+ */
+
+package org.onap.ccsdk.apps.blueprintsprocessor.services.workflow
+
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceInput
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceOutput
+import org.onap.ccsdk.apps.blueprintsprocessor.services.workflow.utils.SvcGraphUtils
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintConstants
+import org.onap.ccsdk.apps.controllerblueprints.core.service.BluePrintRuntimeService
+import org.slf4j.LoggerFactory
+import org.springframework.stereotype.Service
+import java.io.File
+
+
+interface BlueprintDGExecutionService {
+
+    fun executeDirectedGraph(bluePrintRuntimeService: BluePrintRuntimeService<*>,
+                             executionServiceInput: ExecutionServiceInput): ExecutionServiceOutput
+
+}
+
+@Service
+class DefaultBlueprintDGExecutionService(val blueprintSvcLogicService: BlueprintSvcLogicService) : BlueprintDGExecutionService {
+
+    private val log = LoggerFactory.getLogger(DefaultBlueprintDGExecutionService::class.java)
+
+    override fun executeDirectedGraph(bluePrintRuntimeService: BluePrintRuntimeService<*>,
+                                      executionServiceInput: ExecutionServiceInput): ExecutionServiceOutput {
+
+        val bluePrintContext = bluePrintRuntimeService.bluePrintContext()
+
+        val workflowName = executionServiceInput.actionIdentifiers.actionName
+
+        // Get the DG Node Template
+        val nodeTemplateName = bluePrintContext.workflowFirstStepNodeTemplate(workflowName)
+
+        log.info("Executing workflow($workflowName) directed graph NodeTemplate($nodeTemplateName)")
+
+        // Get the DG file info
+        val artifactDefinition = bluePrintContext.nodeTemplateArtifactForArtifactType(nodeTemplateName,
+                WorkflowServiceConstants.ARTIFACT_TYPE_DIRECTED_GRAPH)
+
+        // Populate the DG Path
+        val dgFilePath = bluePrintRuntimeService.getAsString(BluePrintConstants.PROPERTY_BLUEPRINT_BASE_PATH)
+                .plus(File.separator).plus(artifactDefinition.file)
+
+        log.info("Executing directed graph ($dgFilePath)")
+
+        // Create DG instance
+        val graph = SvcGraphUtils.getSvcGraphFromFile(dgFilePath)
+
+        // Execute the DG
+        return blueprintSvcLogicService.execute(graph, bluePrintRuntimeService, executionServiceInput) as ExecutionServiceOutput
+
+    }
+
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintSvcLogicService.kt b/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintSvcLogicService.kt
index 0600f62d2..ab7d73856 100644
--- a/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintSvcLogicService.kt
+++ b/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/BlueprintSvcLogicService.kt
@@ -36,7 +36,7 @@ interface BlueprintSvcLogicService : SvcLogicService {
 
     fun unRegisterExecutors(name: String)
 
-    fun execute(graph: SvcLogicGraph, bluePrintRuntimeService: BluePrintRuntimeService<*>): Any
+    fun execute(graph: SvcLogicGraph, bluePrintRuntimeService: BluePrintRuntimeService<*>, input: Any): Any
 
     @Deprecated("Populate Graph Dynamically from Blueprints, No need to get from Database Store ")
     override fun getStore(): SvcLogicStore {
@@ -93,10 +93,11 @@ class DefaultBlueprintSvcLogicService : BlueprintSvcLogicService {
         }
     }
 
-    override fun execute(graph: SvcLogicGraph, bluePrintRuntimeService: BluePrintRuntimeService<*>): Any {
-        //Initialise BlueprintSvcLogic Context
+    override fun execute(graph: SvcLogicGraph, bluePrintRuntimeService: BluePrintRuntimeService<*>, input: Any): Any {
+        //Initialise BlueprintSvcLogic Context with Blueprint Runtime Service and Input Request
         val blueprintSvcLogicContext = BlueprintSvcLogicContext()
         blueprintSvcLogicContext.setBluePrintRuntimeService(bluePrintRuntimeService)
+        blueprintSvcLogicContext.setRequest(input)
         // Execute the Graph
         execute(graph, blueprintSvcLogicContext)
         // Get the Response
diff --git a/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/WorkflowServiceConfiguration.kt b/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/WorkflowServiceConfiguration.kt
index b9c041e9c..b3186e849 100644
--- a/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/WorkflowServiceConfiguration.kt
+++ b/ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/workflow/WorkflowServiceConfiguration.kt
@@ -21,6 +21,11 @@ import org.springframework.context.annotation.Configuration
 
 @Configuration
 @ComponentScan
-open class WorkflowServiceConfiguration {
+open class WorkflowServiceConfiguration
 
+
+class WorkflowServiceConstants {
+    companion object {
+        const val ARTIFACT_TYPE_DIRECTED_GRAPH = "artifact-directed-graph"
+    }
 }
\ No newline at end of file