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 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         long startTime = System.currentTimeMillis();
  49         Map<String, Object> inputVariables = null;
  50         String processInstanceId = null;
  51         try {
  52             inputVariables = getInputVariables(variableMap);
  53             // This variable indicates that the flow was invoked asynchronously
  54             inputVariables.put("isAsyncProcess", "true");
  55
  56             // Note: this creates a random businessKey if it wasn't specified.
  57             String businessKey = getBusinessKey(inputVariables);
  58
  59             logger.debug("***Received MSO startProcessInstanceByKey with processKey: {} and variables: {}", processKey,
  60                     inputVariables);
  61
  62             RuntimeService runtimeService = getProcessEngineServices().getRuntimeService();
  63             ProcessInstance processInstance =
  64                     runtimeService.startProcessInstanceByKey(processKey, businessKey, inputVariables);
  65             processInstanceId = processInstance.getId();
  66
  67             logger.debug(logMarker + "Process " + processKey + ":" + processInstanceId + " "
  68                     + (processInstance.isEnded() ? "ENDED" : "RUNNING"));
  69         } catch (Exception e) {
  70             WorkflowResponse workflowResponse = new WorkflowResponse();
  71             workflowResponse.setResponse("Error occurred while executing the process: " + e);
  72             workflowResponse.setProcessInstanceID(processInstanceId);
  73             workflowResponse.setMessageCode(500);
  74             workflowResponse.setMessage("Fail");
  75             throw new WorkflowProcessorException(workflowResponse);
  76         }
  77     }
  78
  79     // Note: the business key is used to identify the process in unit tests
  80     protected static String getBusinessKey(Map<String, Object> inputVariables) {
  81         return getOrCreate(inputVariables, "mso-business-key");
  82     }
  83
  84
  85     protected static Map<String, Object> getInputVariables(VariableMapImpl variableMap) {
  86         Map<String, Object> inputVariables = new HashMap<>();
  87         @SuppressWarnings("unchecked")
  88         Map<String, Object> vMap = (Map<String, Object>) variableMap.get("variables");
  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         return inputVariables;
  97     }
  98
  99     protected static String getOrCreate(Map<String, Object> inputVariables, String key) {
 100         String value = Objects.toString(inputVariables.get(key), null);
 101         if (value == null) {
 102             value = UUID.randomUUID().toString();
 103             inputVariables.put(key, value);
 104         }
 105         return value;
 106     }
 107
 108 }