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.time.Instant;
  29 import java.time.temporal.ChronoUnit;
  30 import java.util.concurrent.TimeUnit;
  31
  32 import org.apache.commons.lang.ObjectUtils;
  33 import org.openecomp.appc.domainmodel.lcm.RuntimeContext;
  34 import org.openecomp.appc.exceptions.APPCException;
  35 import org.openecomp.appc.executionqueue.ExecutionQueueService;
  36 import org.openecomp.appc.executionqueue.impl.ExecutionQueueServiceFactory;
  37 import org.openecomp.appc.executor.CommandExecutor;
  38
  39 import com.att.eelf.configuration.EELFLogger;
  40 import com.att.eelf.configuration.EELFManager;
  41
  42
  43 public class CommandExecutorImpl implements CommandExecutor {
  44
  45     private CommandTaskFactory executionTaskFactory ;
  46     private static final EELFLogger logger = EELFManager.getInstance().getLogger(CommandExecutorImpl.class);
  47
  48     private ExecutionQueueService executionQueueService;
  49     private ExpiredMessageHandler expiredMessageHandler;
  50
  51     public CommandExecutorImpl(){
  52
  53     }
  54
  55     public void setExecutionQueueService(ExecutionQueueService executionQueueService) {
  56         this.executionQueueService = executionQueueService;
  57     }
  58
  59     public void setExpiredMessageHandler(ExpiredMessageHandler expiredMessageHandler) {
  60         this.expiredMessageHandler = expiredMessageHandler;
  61     }
  62
  63     public void initialize() {
  64         logger.info("initialization started of CommandExecutorImpl");
  65         executionQueueService = ExecutionQueueServiceFactory.getExecutionQueueService();
  66         executionQueueService.registerMessageExpirationListener(expiredMessageHandler);
  67     }
  68
  69     public void setExecutionTaskFactory(CommandTaskFactory executionTaskFactory) {
  70         this.executionTaskFactory = executionTaskFactory;
  71     }
  72
  73     /**
  74      * Execute given command
  75      * Create command request and enqueue it for execution.
  76      * @param commandExecutorInput Contains CommandHeader,  command , target Id , payload and conf ID (optional)
  77      * @throws APPCException in case of error.
  78      */
  79     @Override
  80     public void executeCommand (RuntimeContext commandExecutorInput) throws APPCException{
  81         if (logger.isTraceEnabled()) {
  82             logger.trace("Entering to executeCommand with CommandExecutorInput = "+ ObjectUtils.toString(commandExecutorInput));
  83         }
  84         enqueRequest(commandExecutorInput);
  85         if (logger.isTraceEnabled()) {
  86             logger.trace("Exiting from executeCommand");
  87         }
  88     }
  89
  90     @SuppressWarnings("unchecked")
  91     private void enqueRequest(RuntimeContext request) throws APPCException{
  92         if (logger.isTraceEnabled()) {
  93             logger.trace("Entering to enqueRequest with CommandRequest = "+ ObjectUtils.toString(request));
  94         }
  95         try {
  96             CommandTask commandTask = getMessageExecutor(request.getRequestContext().getAction().name());
  97             commandTask.setCommandRequest(request);
  98             long remainingTTL = getRemainingTTL(request);
  99             executionQueueService.putMessage(commandTask,remainingTTL, TimeUnit.MILLISECONDS);
 100         } catch (Exception e) {
 101             logger.error("Exception: "+e.getMessage());
 102             throw new APPCException(e);
 103         }
 104
 105         if (logger.isTraceEnabled()) {
 106             logger.trace("Exiting from enqueRequest");
 107         }
 108     }
 109
 110     private long getRemainingTTL(RuntimeContext request) {
 111         Instant requestTimestamp = request.getRequestContext().getCommonHeader().getTimeStamp();
 112         int ttl = request.getRequestContext().getCommonHeader().getFlags().getTtl();
 113         return ChronoUnit.MILLIS.between(Instant.now(), requestTimestamp.plusSeconds(ttl));
 114     }
 115
 116     private CommandTask getMessageExecutor(String action){
 117         if (logger.isTraceEnabled()) {
 118             logger.trace("Entering to getMessageExecutor with command = "+ action);
 119         }
 120         CommandTask executionTask = executionTaskFactory.getExecutionTask(action);
 121         if (logger.isTraceEnabled()) {
 122             logger.trace("Exiting from getMessageExecutor");
 123         }
 124         return executionTask;
 125     }
 126
 127
 128 }