001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.reef.runtime.common.driver.context; 020 021import org.apache.reef.annotations.audience.DriverSide; 022import org.apache.reef.annotations.audience.Private; 023import org.apache.reef.proto.EvaluatorRuntimeProtocol; 024import org.apache.reef.runtime.common.driver.evaluator.EvaluatorControlHandler; 025import org.apache.reef.runtime.common.driver.evaluator.EvaluatorManager; 026import org.apache.reef.tang.annotations.Parameter; 027 028import javax.inject.Inject; 029import java.util.logging.Level; 030import java.util.logging.Logger; 031 032/** 033 * Handles context control messages. 034 */ 035@DriverSide 036@Private 037public class ContextControlHandler { 038 private static final Logger LOG = Logger.getLogger(ContextControlHandler.class.getName()); 039 private final EvaluatorControlHandler evaluatorControlHandler; 040 private final String evaluatorId; 041 042 /** 043 * @param evaluatorControlHandler used to send the actual evaluator control messages. 044 * @param evaluatorId the ID of the evaluator this ContextControlHandler communicates with. 045 */ 046 @Inject 047 ContextControlHandler(final EvaluatorControlHandler evaluatorControlHandler, 048 @Parameter(EvaluatorManager.EvaluatorIdentifier.class) final String evaluatorId) { 049 this.evaluatorControlHandler = evaluatorControlHandler; 050 this.evaluatorId = evaluatorId; 051 LOG.log(Level.FINE, "Instantiated 'ContextControlHandler'"); 052 } 053 054 public synchronized void send(final EvaluatorRuntimeProtocol.ContextControlProto contextControlProto) { 055 final EvaluatorRuntimeProtocol.EvaluatorControlProto evaluatorControlProto = 056 EvaluatorRuntimeProtocol.EvaluatorControlProto.newBuilder() 057 .setTimestamp(System.currentTimeMillis()) 058 .setIdentifier(evaluatorId) 059 .setContextControl(contextControlProto).build(); 060 this.evaluatorControlHandler.send(evaluatorControlProto); 061 } 062}