appc-dispatcher/appc-command-executor/appc-command-executor-core/src/main/java/org/openecomp/appc/executor/impl/CommandExecutorImpl.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * openECOMP : APP-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights
   6  *                                              reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 /**
  23  *
  24  */
  25 package org.openecomp.appc.executor.impl;
  26
  27
  28 import java.util.Date;
  29 import java.util.concurrent.TimeUnit;
  30
  31 import org.apache.commons.lang.ObjectUtils;
  32 import org.openecomp.appc.domainmodel.lcm.RuntimeContext;
  33 import org.openecomp.appc.exceptions.APPCException;
  34 import org.openecomp.appc.executionqueue.ExecutionQueueService;
  35 import org.openecomp.appc.executionqueue.impl.ExecutionQueueServiceFactory;
  36 import org.openecomp.appc.executor.CommandExecutor;
  37
  38 import com.att.eelf.configuration.EELFLogger;
  39 import com.att.eelf.configuration.EELFManager;
  40
  41
  42 public class CommandExecutorImpl implements CommandExecutor {
  43
  44     private CommandTaskFactory executionTaskFactory ;
  45     private static final EELFLogger logger = EELFManager.getInstance().getLogger(CommandExecutorImpl.class);
  46
  47     private ExecutionQueueService executionQueueService;
  48     private ExpiredMessageHandler expiredMessageHandler;
  49
  50     public CommandExecutorImpl(){
  51
  52     }
  53
  54     public void setExecutionQueueService(ExecutionQueueService executionQueueService) {
  55         this.executionQueueService = executionQueueService;
  56     }
  57
  58     public void setExpiredMessageHandler(ExpiredMessageHandler expiredMessageHandler) {
  59         this.expiredMessageHandler = expiredMessageHandler;
  60     }
  61
  62     public void initialize() {
  63         logger.info("initialization started of CommandExecutorImpl");
  64         executionQueueService = ExecutionQueueServiceFactory.getExecutionQueueService();
  65         executionQueueService.registerMessageExpirationListener(expiredMessageHandler);
  66     }
  67
  68     public void setExecutionTaskFactory(CommandTaskFactory executionTaskFactory) {
  69         this.executionTaskFactory = executionTaskFactory;
  70     }
  71
  72     /**
  73      * Execute given command
  74      * Create command request and enqueue it for execution.
  75      * @param commandExecutorInput Contains CommandHeader,  command , target Id , payload and conf ID (optional)
  76      * @throws APPCException in case of error.
  77      */
  78     @Override
  79     public void executeCommand (RuntimeContext commandExecutorInput) throws APPCException{
  80         if (logger.isTraceEnabled()) {
  81             logger.trace("Entering to executeCommand with CommandExecutorInput = "+ ObjectUtils.toString(commandExecutorInput));
  82         }
  83         enqueRequest(commandExecutorInput);
  84         if (logger.isTraceEnabled()) {
  85             logger.trace("Exiting from executeCommand");
  86         }
  87     }
  88
  89     @SuppressWarnings("unchecked")
  90     private void enqueRequest(RuntimeContext request) throws APPCException{
  91         if (logger.isTraceEnabled()) {
  92             logger.trace("Entering to enqueRequest with CommandRequest = "+ ObjectUtils.toString(request));
  93         }
  94         try {
  95             CommandTask commandTask = getMessageExecutor(request.getRequestContext().getAction().name());
  96             commandTask.setCommandRequest(request);
  97             long remainingTTL = getRemainingTTL(request);
  98             executionQueueService.putMessage(commandTask,remainingTTL, TimeUnit.MILLISECONDS);
  99         } catch (Exception e) {
 100             logger.error("Exception: "+e.getMessage());
 101             throw new APPCException(e);
 102         }
 103
 104         if (logger.isTraceEnabled()) {
 105             logger.trace("Exiting from enqueRequest");
 106         }
 107     }
 108
 109     private long getRemainingTTL(RuntimeContext request) {
 110         Date requestTimestamp = request.getRequestContext().getCommonHeader().getTimeStamp();
 111         int ttl = request.getRequestContext().getCommonHeader().getFlags().getTtl();
 112         return ttl*1000 + requestTimestamp.getTime() - System.currentTimeMillis();
 113     }
 114
 115     private CommandTask getMessageExecutor(String action){
 116         if (logger.isTraceEnabled()) {
 117             logger.trace("Entering to getMessageExecutor with command = "+ action);
 118         }
 119         CommandTask executionTask = executionTaskFactory.getExecutionTask(action);
 120         if (logger.isTraceEnabled()) {
 121             logger.trace("Exiting from getMessageExecutor");
 122         }
 123         return executionTask;
 124     }
 125
 126
 127 }