ms/blueprintsprocessor/modules/services/workflow-service/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/services/workflow/BluePrintWorkflowExecutionServiceImpl.kt

   1 /*
   2  *  Copyright © 2019 IBM.
   3  *
   4  *  Licensed under the Apache License, Version 2.0 (the "License");
   5  *  you may not use this file except in compliance with the License.
   6  *  You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *  Unless required by applicable law or agreed to in writing, software
  11  *  distributed under the License is distributed on an "AS IS" BASIS,
  12  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *  See the License for the specific language governing permissions and
  14  *  limitations under the License.
  15  */
  16
  17 package org.onap.ccsdk.cds.blueprintsprocessor.services.workflow
  18
  19 import org.onap.ccsdk.cds.blueprintsprocessor.core.api.data.ExecutionServiceInput
  20 import org.onap.ccsdk.cds.blueprintsprocessor.core.api.data.ExecutionServiceOutput
  21 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintConstants
  22 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  23 import org.onap.ccsdk.cds.controllerblueprints.core.asObjectNode
  24 import org.onap.ccsdk.cds.controllerblueprints.core.interfaces.BluePrintWorkflowExecutionService
  25 import org.onap.ccsdk.cds.controllerblueprints.core.service.BluePrintRuntimeService
  26 import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
  27 import org.slf4j.LoggerFactory
  28 import org.springframework.stereotype.Service
  29
  30 @Service("bluePrintWorkflowExecutionService")
  31 open class BluePrintWorkflowExecutionServiceImpl(
  32         private val componentWorkflowExecutionService: ComponentWorkflowExecutionService,
  33         private val dgWorkflowExecutionService: DGWorkflowExecutionService,
  34         private val imperativeWorkflowExecutionService: ImperativeWorkflowExecutionService
  35 ) : BluePrintWorkflowExecutionService<ExecutionServiceInput, ExecutionServiceOutput> {
  36
  37     private val log = LoggerFactory.getLogger(BluePrintWorkflowExecutionServiceImpl::class.java)!!
  38
  39     override suspend fun executeBluePrintWorkflow(bluePrintRuntimeService: BluePrintRuntimeService<*>,
  40                                                   executionServiceInput: ExecutionServiceInput,
  41                                                   properties: MutableMap<String, Any>): ExecutionServiceOutput {
  42
  43         val bluePrintContext = bluePrintRuntimeService.bluePrintContext()
  44
  45         val workflowName = executionServiceInput.actionIdentifiers.actionName
  46
  47         // Assign Workflow inputs
  48         //check if request structure exists
  49         if (!executionServiceInput.payload.has("$workflowName-request")) {
  50             throw BluePrintProcessorException("Input request missing the expected '$workflowName-request' block!")
  51         }
  52         val input = executionServiceInput.payload.get("$workflowName-request")
  53         bluePrintRuntimeService.assignWorkflowInputs(workflowName, input)
  54
  55         val workflow = bluePrintContext.workflowByName(workflowName)
  56
  57         val steps = workflow.steps ?: throw BluePrintProcessorException("could't get steps for workflow($workflowName)")
  58
  59         /** If workflow has multiple steps, then it is imperative workflow */
  60         val executionServiceOutput: ExecutionServiceOutput = if (steps.size > 1) {
  61             imperativeWorkflowExecutionService
  62                     .executeBluePrintWorkflow(bluePrintRuntimeService, executionServiceInput, properties)
  63         } else {
  64             // Get the DG Node Template
  65             val nodeTemplateName = bluePrintContext.workflowFirstStepNodeTemplate(workflowName)
  66
  67             val derivedFrom = bluePrintContext.nodeTemplateNodeType(nodeTemplateName).derivedFrom
  68
  69             log.info("Executing workflow($workflowName) NodeTemplate($nodeTemplateName), derived from($derivedFrom)")
  70             /** Return ExecutionServiceOutput based on DG node or Component Node */
  71             when {
  72                 derivedFrom.startsWith(BluePrintConstants.MODEL_TYPE_NODE_COMPONENT, true) -> {
  73                     componentWorkflowExecutionService
  74                             .executeBluePrintWorkflow(bluePrintRuntimeService, executionServiceInput, properties)
  75                 }
  76                 derivedFrom.startsWith(BluePrintConstants.MODEL_TYPE_NODE_WORKFLOW, true) -> {
  77                     dgWorkflowExecutionService
  78                             .executeBluePrintWorkflow(bluePrintRuntimeService, executionServiceInput, properties)
  79                 }
  80                 else -> {
  81                     throw BluePrintProcessorException("couldn't execute workflow($workflowName) step mapped " +
  82                             "to node template($nodeTemplateName) derived from($derivedFrom)")
  83                 }
  84             }
  85         }
  86         executionServiceOutput.commonHeader = executionServiceInput.commonHeader
  87         executionServiceOutput.actionIdentifiers = executionServiceInput.actionIdentifiers
  88         // Resolve Workflow Outputs
  89         val workflowOutputs = bluePrintRuntimeService.resolveWorkflowOutputs(workflowName)
  90
  91         // Set the Response Payload
  92         executionServiceOutput.payload = JacksonUtils.objectMapper.createObjectNode()
  93         executionServiceOutput.payload.set("$workflowName-response", workflowOutputs.asObjectNode())
  94         return executionServiceOutput
  95     }
  96
  97 }