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.exceptions.APPCException;
  33 import org.openecomp.appc.executionqueue.ExecutionQueueService;
  34 import org.openecomp.appc.executionqueue.impl.ExecutionQueueServiceFactory;
  35 import org.openecomp.appc.executor.CommandExecutor;
  36 import org.openecomp.appc.executor.impl.objects.CommandRequest;
  37 import org.openecomp.appc.executor.impl.objects.LCMCommandRequest;
  38 import org.openecomp.appc.executor.impl.objects.LCMReadOnlyCommandRequest;
  39 import org.openecomp.appc.executor.objects.CommandExecutorInput;
  40 import com.att.eelf.configuration.EELFLogger;
  41 import com.att.eelf.configuration.EELFManager;
  42
  43
  44 public class CommandExecutorImpl implements CommandExecutor {
  45
  46     private CommandTaskFactory executionTaskFactory ;
  47     private static final EELFLogger logger = EELFManager.getInstance().getLogger(CommandExecutorImpl.class);
  48
  49     private ExecutionQueueService executionQueueService;
  50     private ExpiredMessageHandler expiredMessageHandler;
  51
  52     public CommandExecutorImpl(){
  53
  54     }
  55
  56     public void setExecutionQueueService(ExecutionQueueService executionQueueService) {
  57         this.executionQueueService = executionQueueService;
  58     }
  59
  60     public void setExpiredMessageHandler(ExpiredMessageHandler expiredMessageHandler) {
  61         this.expiredMessageHandler = expiredMessageHandler;
  62     }
  63
  64     public void initialize() {
  65         logger.info("initialization started of CommandExecutorImpl");
  66         executionQueueService = ExecutionQueueServiceFactory.getExecutionQueueService();
  67         executionQueueService.registerMessageExpirationListener(expiredMessageHandler);
  68     }
  69
  70     public void setExecutionTaskFactory(CommandTaskFactory executionTaskFactory) {
  71         this.executionTaskFactory = executionTaskFactory;
  72     }
  73
  74     /**
  75      * Execute given command
  76      * Create command request and enqueue it for execution.
  77      * @param commandExecutorInput Contains CommandHeader,  command , target Id , payload and conf ID (optional)
  78      * @throws APPCException in case of error.
  79      */
  80     @Override
  81     public void executeCommand (CommandExecutorInput commandExecutorInput) throws APPCException{
  82         if (logger.isTraceEnabled()) {
  83             logger.trace("Entering to executeCommand with CommandExecutorInput = "+ ObjectUtils.toString(commandExecutorInput));
  84         }
  85         CommandRequest request = getCommandRequest(commandExecutorInput);
  86         enqueRequest(request);
  87         if (logger.isTraceEnabled()) {
  88             logger.trace("Exiting from executeCommand");
  89         }
  90     }
  91
  92     private CommandRequest getCommandRequest(CommandExecutorInput commandExecutorInput){
  93         if (logger.isTraceEnabled()) {
  94             logger.trace("Entering to getCommandRequest with CommandExecutorInput = "+ ObjectUtils.toString(commandExecutorInput));
  95         }
  96         CommandRequest commandRequest;
  97
  98         switch(commandExecutorInput.getRuntimeContext().getRequestContext().getAction()){
  99             case Sync:
 100                 commandRequest = new LCMReadOnlyCommandRequest(commandExecutorInput);
 101                 break;
 102             case Audit:
 103                 commandRequest = new LCMReadOnlyCommandRequest(commandExecutorInput);
 104                 break;
 105             default:
 106                 commandRequest = new LCMCommandRequest(commandExecutorInput);
 107                 break;
 108         }
 109         if (logger.isTraceEnabled()) {
 110             logger.trace("Exiting from getCommandRequest with (CommandRequest = "+ ObjectUtils.toString(commandRequest)+")");
 111         }
 112         return commandRequest;
 113     }
 114
 115     @SuppressWarnings("unchecked")
 116     private void enqueRequest(CommandRequest request) throws APPCException{
 117         if (logger.isTraceEnabled()) {
 118             logger.trace("Entering to enqueRequest with CommandRequest = "+ ObjectUtils.toString(request));
 119         }
 120         try {
 121             CommandTask<? extends CommandRequest> commandTask = getMessageExecutor(request.getCommandExecutorInput().getRuntimeContext().getRequestContext().getAction().name());
 122             commandTask.setCommandRequest(request);
 123             long remainingTTL = getRemainingTTL(request);
 124             executionQueueService.putMessage(commandTask,remainingTTL, TimeUnit.MILLISECONDS);
 125         } catch (Exception e) {
 126             logger.error("Exception: "+e.getMessage());
 127             throw new APPCException(e);
 128         }
 129
 130         if (logger.isTraceEnabled()) {
 131             logger.trace("Exiting from enqueRequest");
 132         }
 133     }
 134
 135     private long getRemainingTTL(CommandRequest request) {
 136         Date requestTimestamp = request.getCommandExecutorInput().getRuntimeContext().getRequestContext().getCommonHeader().getTimeStamp();
 137         int ttl = request.getCommandExecutorInput().getRuntimeContext().getRequestContext().getCommonHeader().getFlags().getTtl();
 138         return ttl*1000 + requestTimestamp.getTime() - System.currentTimeMillis();
 139     }
 140
 141     private CommandTask<? extends CommandRequest> getMessageExecutor(String action){
 142         if (logger.isTraceEnabled()) {
 143             logger.trace("Entering to getMessageExecutor with command = "+ action);
 144         }
 145         CommandTask<? extends CommandRequest> executionTask = executionTaskFactory.getExecutionTask(action);
 146         if (logger.isTraceEnabled()) {
 147             logger.trace("Exiting from getMessageExecutor");
 148         }
 149         return executionTask;
 150     }
 151
 152
 153 }