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  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.so.bpmn.common.workflow.service;
  22
  23 import java.util.HashMap;
  24 import java.util.Map;
  25 import java.util.Objects;
  26 import java.util.UUID;
  27
  28 import org.camunda.bpm.engine.RuntimeService;
  29 import org.camunda.bpm.engine.runtime.ProcessInstance;
  30 import org.camunda.bpm.engine.variable.impl.VariableMapImpl;
  31 import org.onap.so.bpmn.common.workflow.context.WorkflowResponse;
  32 import org.onap.so.logger.MsoLogger;
  33 import org.openecomp.mso.bpmn.common.workflow.service.WorkflowProcessorException;
  34 import org.springframework.scheduling.annotation.Async;
  35 import org.springframework.stereotype.Service;
  36
  37 @Service
  38 public class WorkflowProcessor extends ProcessEngineAwareService {
  39
  40         private static final MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL, WorkflowProcessor.class);
  41
  42         protected static final String logMarker = "[WRKFLOW-RESOURCE]";
  43         protected static final long DEFAULT_WAIT_TIME = 30000;  //default wait time
  44
  45         @Async
  46         public void startProcess( String processKey, VariableMapImpl variableMap) throws InterruptedException
  47         {
  48
  49                 long startTime = System.currentTimeMillis();
  50                 Map<String, Object> inputVariables = null;
  51                 String processInstanceId = null;
  52                 try {
  53                         inputVariables = getInputVariables(variableMap);
  54                         // This variable indicates that the flow was invoked asynchronously
  55                         inputVariables.put("isAsyncProcess", "true");
  56
  57                         // Note: this creates a random businessKey if it wasn't specified.
  58                         String businessKey = getBusinessKey(inputVariables);
  59
  60                         msoLogger.debug("***Received MSO startProcessInstanceByKey with processKey: " + processKey
  61                                         + " and variables: " + inputVariables);
  62
  63                         RuntimeService runtimeService = getProcessEngineServices().getRuntimeService();
  64                         ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processKey, businessKey,
  65                                         inputVariables);
  66                         processInstanceId = processInstance.getId();
  67
  68                         msoLogger.debug(logMarker + "Process " + processKey + ":" + processInstanceId + " "
  69                                         + (processInstance.isEnded() ? "ENDED" : "RUNNING"));
  70                 } catch (Exception e) {
  71
  72                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.InternalError,
  73                                         logMarker + "Error in starting the process: " + e.getMessage());
  74
  75                         WorkflowResponse workflowResponse = new WorkflowResponse();
  76                         workflowResponse.setResponse("Error occurred while executing the process: " + e);
  77                         workflowResponse.setProcessInstanceID(processInstanceId);
  78                         workflowResponse.setMessageCode(500);
  79                         workflowResponse.setMessage("Fail");
  80                         throw new WorkflowProcessorException(workflowResponse);
  81                 }
  82         }
  83
  84         protected static String getKeyValueFromInputVariables(Map<String,Object> inputVariables, String key) {
  85                 if (inputVariables == null) {
  86                         return "";
  87                 }
  88
  89                 return Objects.toString(inputVariables.get(key), "N/A");
  90         }
  91
  92         // Note: the business key is used to identify the process in unit tests
  93         protected static String getBusinessKey(Map<String, Object> inputVariables) {
  94         return getOrCreate(inputVariables, "mso-business-key");
  95         }
  96
  97         protected static String getRequestId(Map<String, Object> inputVariables) {
  98         return getOrCreate(inputVariables, "mso-request-id");
  99         }
 100
 101         protected static Map<String, Object> getInputVariables(VariableMapImpl variableMap) {
 102                 Map<String, Object> inputVariables = new HashMap<>();
 103                 @SuppressWarnings("unchecked")
 104                 Map<String, Object> vMap = (Map<String, Object>) variableMap.get("variables");
 105                 for (Map.Entry<String, Object> entry : vMap.entrySet()) {
 106                         String vName = entry.getKey();
 107                         Object value = entry.getValue();
 108                         @SuppressWarnings("unchecked")
 109                         Map<String, Object> valueMap = (Map<String,Object>)value; // value, type
 110                         inputVariables.put(vName, valueMap.get("value"));
 111                 }
 112                 return inputVariables;
 113         }
 114
 115     protected static String getOrCreate(Map<String, Object> inputVariables, String key) {
 116         String value = Objects.toString(inputVariables.get(key), null);
 117         if (value == null) {
 118             value = UUID.randomUUID().toString();
 119             inputVariables.put(key, value);
 120         }
 121         return value;
 122     }
 123
 124         protected long getWaitTime(Map<String, Object> inputVariables)
 125         {
 126
 127                 String timeout = Objects.toString(inputVariables.get("mso-service-request-timeout"), null);
 128
 129                 if (timeout != null) {
 130                         try {
 131                                 return Long.parseLong(timeout)*1000;
 132                         } catch (NumberFormatException nex) {
 133                                 msoLogger.debug("Invalid input for mso-service-request-timeout");
 134                         }
 135                 }
 136
 137                 return DEFAULT_WAIT_TIME;
 138         }
 139 }