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.tests.statepassing; 020 021import org.apache.reef.driver.client.JobMessageObserver; 022import org.apache.reef.driver.context.ActiveContext; 023import org.apache.reef.driver.context.ContextConfiguration; 024import org.apache.reef.driver.context.ServiceConfiguration; 025import org.apache.reef.driver.evaluator.AllocatedEvaluator; 026import org.apache.reef.driver.task.CompletedTask; 027import org.apache.reef.driver.task.TaskConfiguration; 028import org.apache.reef.tang.Configuration; 029import org.apache.reef.tang.annotations.Unit; 030import org.apache.reef.tang.exceptions.BindException; 031import org.apache.reef.wake.EventHandler; 032 033import javax.inject.Inject; 034import java.util.logging.Level; 035import java.util.logging.Logger; 036 037/** 038 * Driver for StatePassingTest. 039 */ 040@Unit 041public class StatePassingDriver { 042 043 private static final Logger LOG = Logger.getLogger(StatePassingDriver.class.getName()); 044 045 private static final int PASSES = 2; 046 private final JobMessageObserver client; 047 private int pass = 0; 048 049 @Inject 050 public StatePassingDriver(final JobMessageObserver client) { 051 this.client = client; 052 } 053 054 private static boolean allEqual(final byte value, final byte[] bytes) { 055 for (int i = 0; i < bytes.length; ++i) { 056 if (bytes[i] != value) { 057 return false; 058 } 059 } 060 return true; 061 } 062 063 private void nextPass(final ActiveContext activeContext) { 064 try { 065 activeContext.submitTask(TaskConfiguration.CONF 066 .set(TaskConfiguration.IDENTIFIER, "StatePassing-" + pass) 067 .set(TaskConfiguration.TASK, StatePassingTask.class) 068 .build()); 069 ++pass; 070 } catch (final BindException e) { 071 throw new RuntimeException(e); 072 } 073 } 074 075 final class EvaluatorAllocatedHandler implements EventHandler<AllocatedEvaluator> { 076 @Override 077 public void onNext(final AllocatedEvaluator eb) { 078 try { 079 final Configuration contextConfiguration = ContextConfiguration.CONF 080 .set(ContextConfiguration.IDENTIFIER, "StatePassingContext") 081 .build(); 082 083 final Configuration serviceConfiguration = ServiceConfiguration.CONF 084 .set(ServiceConfiguration.SERVICES, Counter.class) 085 .build(); 086 087 eb.submitContextAndService(contextConfiguration, serviceConfiguration); 088 } catch (final BindException e) { 089 throw new RuntimeException(e); 090 } 091 } 092 } 093 094 final class ContextActiveHandler implements EventHandler<ActiveContext> { 095 @Override 096 public void onNext(final ActiveContext activeContext) { 097 nextPass(activeContext); 098 } 099 } 100 101 final class TaskCompletedHandler implements EventHandler<CompletedTask> { 102 @Override 103 public void onNext(final CompletedTask completed) { 104 LOG.log(Level.INFO, "Received a completed task: " + completed); 105 final byte[] message = completed.get(); 106 107 if (message.length != pass) { 108 final String msg = "Expected message of length " + pass + ", but got message of length " + message.length; 109 final RuntimeException ex = new RuntimeException(msg); 110 throw ex; 111 } 112 if (!allEqual((byte) 1, message)) { 113 final RuntimeException ex = new RuntimeException("Did not get the right message"); 114 throw ex; 115 } 116 117 if (pass < PASSES) { 118 LOG.log(Level.INFO, "Submitting the next Task"); 119 nextPass(completed.getActiveContext()); 120 } else { 121 LOG.log(Level.INFO, "Done"); 122 completed.getActiveContext().close(); 123 } 124 } 125 } 126}