gerrit.onap Code Review - so.git/blob

   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 import org.camunda.bpm.engine.RuntimeService;
  30 import org.camunda.bpm.engine.runtime.ProcessInstance;
  31 import org.camunda.bpm.engine.variable.impl.VariableMapImpl;
  32 import org.onap.so.bpmn.common.workflow.context.WorkflowResponse;
  33 import org.openecomp.mso.bpmn.common.workflow.service.WorkflowProcessorException;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36 import org.springframework.scheduling.annotation.Async;
  37 import org.springframework.stereotype.Service;
  38
  39 @Service
  40 public class WorkflowProcessor extends ProcessEngineAwareService {
  41
  42     private static final Logger logger = LoggerFactory.getLogger(WorkflowProcessor.class);
  43     protected static final String logMarker = "[WRKFLOW-RESOURCE]";
  44
  45     @Async
  46     public void startProcess(String processKey, VariableMapImpl variableMap) {
  47
  48         Map<String, Object> inputVariables;
  49         String processInstanceId = null;
  50         try {
  51             inputVariables = getInputVariables(variableMap);
  52             // This variable indicates that the flow was invoked asynchronously
  53             inputVariables.put("isAsyncProcess", "true");
  54
  55             // Note: this creates a random businessKey if it wasn't specified.
  56             String businessKey = getBusinessKey(inputVariables);
  57
  58             logger.debug("***Received MSO startProcessInstanceByKey with processKey: {} and variables: {}", processKey,
  59                     inputVariables);
  60
  61             RuntimeService runtimeService = getProcessEngineServices().getRuntimeService();
  62             ProcessInstance processInstance =
  63                     runtimeService.startProcessInstanceByKey(processKey, businessKey, inputVariables);
  64             processInstanceId = processInstance.getId();
  65
  66             logger.debug(logMarker + "Process " + processKey + ":" + processInstanceId + " "
  67                     + (processInstance.isEnded() ? "ENDED" : "RUNNING"));
  68         } catch (Exception e) {
  69             WorkflowResponse workflowResponse = new WorkflowResponse();
  70             workflowResponse.setResponse("Error occurred while executing the process: " + e);
  71             workflowResponse.setProcessInstanceID(processInstanceId);
  72             workflowResponse.setMessageCode(500);
  73             workflowResponse.setMessage("Fail");
  74             throw new WorkflowProcessorException(workflowResponse);
  75         }
  76     }
  77
  78     // Note: the business key is used to identify the process in unit tests
  79     protected static String getBusinessKey(Map<String, Object> inputVariables) {
  80         return getOrCreate(inputVariables, "mso-business-key");
  81     }
  82
  83
  84     protected static Map<String, Object> getInputVariables(VariableMapImpl variableMap) {
  85         Map<String, Object> inputVariables = new HashMap<>();
  86         @SuppressWarnings("unchecked")
  87         Map<String, Object> vMap = (Map<String, Object>) variableMap.get("variables");
  88         if (vMap != null) {
  89             for (Map.Entry<String, Object> entry : vMap.entrySet()) {
  90                 String vName = entry.getKey();
  91                 Object value = entry.getValue();
  92                 @SuppressWarnings("unchecked")
  93                 Map<String, Object> valueMap = (Map<String, Object>) value; // value, type
  94                 inputVariables.put(vName, valueMap.get("value"));
  95             }
  96         }
  97         return inputVariables;
  98     }
  99
 100     protected static String getOrCreate(Map<String, Object> inputVariables, String key) {
 101         String value = Objects.toString(inputVariables.get(key), null);
 102         if (value == null) {
 103             value = UUID.randomUUID().toString();
 104             inputVariables.put(key, value);
 105         }
 106         return value;
 107     }
 108
 109 }