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(
  40         bluePrintRuntimeService: BluePrintRuntimeService<*>,
  41         executionServiceInput: ExecutionServiceInput,
  42         properties: MutableMap<String, Any>
  43     ): ExecutionServiceOutput {
  44
  45         val bluePrintContext = bluePrintRuntimeService.bluePrintContext()
  46
  47         val workflowName = executionServiceInput.actionIdentifiers.actionName
  48
  49         // Assign Workflow inputs
  50         // check if request structure exists
  51         if (!executionServiceInput.payload.has("$workflowName-request")) {
  52             throw BluePrintProcessorException("Input request missing the expected '$workflowName-request' block!")
  53         }
  54         val input = executionServiceInput.payload.get("$workflowName-request")
  55         bluePrintRuntimeService.assignWorkflowInputs(workflowName, input)
  56
  57         val workflow = bluePrintContext.workflowByName(workflowName)
  58
  59         val steps = workflow.steps ?: throw BluePrintProcessorException("could't get steps for workflow($workflowName)")
  60
  61         /** If workflow has multiple steps, then it is imperative workflow */
  62         val executionServiceOutput: ExecutionServiceOutput = if (steps.size > 1) {
  63             imperativeWorkflowExecutionService
  64                 .executeBluePrintWorkflow(bluePrintRuntimeService, executionServiceInput, properties)
  65         } else {
  66             // Get the DG Node Template
  67             val nodeTemplateName = bluePrintContext.workflowFirstStepNodeTemplate(workflowName)
  68
  69             val derivedFrom = bluePrintContext.nodeTemplateNodeType(nodeTemplateName).derivedFrom
  70
  71             log.info("Executing workflow($workflowName) NodeTemplate($nodeTemplateName), derived from($derivedFrom)")
  72             /** Return ExecutionServiceOutput based on DG node or Component Node */
  73             when {
  74                 derivedFrom.startsWith(BluePrintConstants.MODEL_TYPE_NODE_COMPONENT, true) -> {
  75                     componentWorkflowExecutionService
  76                         .executeBluePrintWorkflow(bluePrintRuntimeService, executionServiceInput, properties)
  77                 }
  78                 derivedFrom.startsWith(BluePrintConstants.MODEL_TYPE_NODE_WORKFLOW, true) -> {
  79                     dgWorkflowExecutionService
  80                         .executeBluePrintWorkflow(bluePrintRuntimeService, executionServiceInput, properties)
  81                 }
  82                 else -> {
  83                     throw BluePrintProcessorException(
  84                         "couldn't execute workflow($workflowName) step mapped " +
  85                                 "to node template($nodeTemplateName) derived from($derivedFrom)"
  86                     )
  87                 }
  88             }
  89         }
  90         executionServiceOutput.commonHeader = executionServiceInput.commonHeader
  91         executionServiceOutput.actionIdentifiers = executionServiceInput.actionIdentifiers
  92         // Resolve Workflow Outputs
  93         val workflowOutputs = bluePrintRuntimeService.resolveWorkflowOutputs(workflowName)
  94
  95         // Set the Response Payload
  96         executionServiceOutput.payload = JacksonUtils.objectMapper.createObjectNode()
  97         executionServiceOutput.payload.set("$workflowName-response", workflowOutputs.asObjectNode())
  98         return executionServiceOutput
  99     }
 100 }