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.evaluator; 020 021import org.apache.reef.annotations.audience.Private; 022import org.apache.reef.client.FailedRuntime; 023import org.apache.reef.exception.EvaluatorException; 024import org.apache.reef.proto.ReefServiceProtos; 025import org.apache.reef.util.Optional; 026import org.apache.reef.wake.EventHandler; 027import org.apache.reef.wake.remote.RemoteMessage; 028 029import javax.inject.Inject; 030import java.util.logging.Level; 031import java.util.logging.Logger; 032 033/** 034 * The error handler receives all resourcemanager errors from all evaluators in the system. 035 * Its primary function is to dispatch these to the appropriate EvaluatorManager. 036 */ 037@Private 038public final class EvaluatorResourceManagerErrorHandler 039 implements EventHandler<RemoteMessage<ReefServiceProtos.RuntimeErrorProto>> { 040 private static final Logger LOG = Logger.getLogger(EvaluatorResourceManagerErrorHandler.class.toString()); 041 private final Evaluators evaluators; 042 043 044 @Inject 045 EvaluatorResourceManagerErrorHandler(final Evaluators evaluators) { 046 this.evaluators = evaluators; 047 LOG.log(Level.FINE, "Instantiated 'EvaluatorResourceManagerErrorHandler'"); 048 } 049 050 @Override 051 public void onNext(final RemoteMessage<ReefServiceProtos.RuntimeErrorProto> runtimeErrorProtoRemoteMessage) { 052 final ReefServiceProtos.RuntimeErrorProto runtimeErrorProto = runtimeErrorProtoRemoteMessage.getMessage(); 053 final FailedRuntime error = new FailedRuntime(runtimeErrorProto); 054 final String evaluatorId = error.getId(); 055 LOG.log(Level.WARNING, "Runtime error: " + error); 056 057 final EvaluatorException evaluatorException = error.getReason().isPresent() ? 058 new EvaluatorException(evaluatorId, error.getReason().get()) : 059 new EvaluatorException(evaluatorId, "Runtime error"); 060 061 final Optional<EvaluatorManager> evaluatorManager = this.evaluators.get(evaluatorId); 062 if (evaluatorManager.isPresent()) { 063 evaluatorManager.get().onEvaluatorException(evaluatorException); 064 } else { 065 if (this.evaluators.wasClosed(evaluatorId)) { 066 LOG.log(Level.WARNING, "Evaluator [" + evaluatorId + "] has raised exception after it was closed."); 067 } else { 068 LOG.log(Level.WARNING, "Unknown evaluator runtime error: " + error); 069 } 070 } 071 } 072}