bpmn/mso-infrastructure-bpmn/src/main/java/org/onap/so/bpmn/common/workflow/service/WorkflowProcessor.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP - SO
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Modifications Copyright (c) 2019 Samsung
   8  * ================================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  * ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.so.bpmn.common.workflow.service;
  24
  25 import java.util.HashMap;
  26 import java.util.Map;
  27 import java.util.Objects;
  28 import java.util.UUID;
  29
  30 import org.camunda.bpm.engine.RuntimeService;
  31 import org.camunda.bpm.engine.runtime.ProcessInstance;
  32 import org.camunda.bpm.engine.variable.impl.VariableMapImpl;
  33 import org.onap.so.bpmn.common.workflow.context.WorkflowResponse;
  34 import org.openecomp.mso.bpmn.common.workflow.service.WorkflowProcessorException;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37 import org.springframework.scheduling.annotation.Async;
  38 import org.springframework.stereotype.Service;
  39
  40 @Service
  41 public class WorkflowProcessor extends ProcessEngineAwareService {
  42
  43         private static final Logger logger = LoggerFactory.getLogger(WorkflowProcessor.class);
  44         protected static final String logMarker = "[WRKFLOW-RESOURCE]";
  45
  46         @Async
  47         public void startProcess( String processKey, VariableMapImpl variableMap)
  48         {
  49
  50                 long startTime = System.currentTimeMillis();
  51                 Map<String, Object> inputVariables = null;
  52                 String processInstanceId = null;
  53                 try {
  54                         inputVariables = getInputVariables(variableMap);
  55                         // This variable indicates that the flow was invoked asynchronously
  56                         inputVariables.put("isAsyncProcess", "true");
  57
  58                         // Note: this creates a random businessKey if it wasn't specified.
  59                         String businessKey = getBusinessKey(inputVariables);
  60
  61                         logger.debug("***Received MSO startProcessInstanceByKey with processKey: {} and variables: {}", processKey,
  62                                 inputVariables);
  63
  64                         RuntimeService runtimeService = getProcessEngineServices().getRuntimeService();
  65                         ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processKey, businessKey,
  66                                         inputVariables);
  67                         processInstanceId = processInstance.getId();
  68
  69                         logger.debug(logMarker + "Process " + processKey + ":" + processInstanceId + " "
  70                                         + (processInstance.isEnded() ? "ENDED" : "RUNNING"));
  71                 } catch (Exception e) {
  72                         WorkflowResponse workflowResponse = new WorkflowResponse();
  73                         workflowResponse.setResponse("Error occurred while executing the process: " + e);
  74                         workflowResponse.setProcessInstanceID(processInstanceId);
  75                         workflowResponse.setMessageCode(500);
  76                         workflowResponse.setMessage("Fail");
  77                         throw new WorkflowProcessorException(workflowResponse);
  78                 }
  79         }
  80
  81         // Note: the business key is used to identify the process in unit tests
  82         protected static String getBusinessKey(Map<String, Object> inputVariables) {
  83         return getOrCreate(inputVariables, "mso-business-key");
  84         }
  85
  86
  87         protected static Map<String, Object> getInputVariables(VariableMapImpl variableMap) {
  88                 Map<String, Object> inputVariables = new HashMap<>();
  89                 @SuppressWarnings("unchecked")
  90                 Map<String, Object> vMap = (Map<String, Object>) variableMap.get("variables");
  91                 for (Map.Entry<String, Object> entry : vMap.entrySet()) {
  92                         String vName = entry.getKey();
  93                         Object value = entry.getValue();
  94                         @SuppressWarnings("unchecked")
  95                         Map<String, Object> valueMap = (Map<String,Object>)value; // value, type
  96                         inputVariables.put(vName, valueMap.get("value"));
  97                 }
  98                 return inputVariables;
  99         }
 100
 101     protected static String getOrCreate(Map<String, Object> inputVariables, String key) {
 102         String value = Objects.toString(inputVariables.get(key), null);
 103         if (value == null) {
 104             value = UUID.randomUUID().toString();
 105             inputVariables.put(key, value);
 106         }
 107         return value;
 108     }
 109
 110 }