| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.tajo.rpc; |
| |
| import java.io.IOException; |
| import java.util.Date; |
| import java.util.List; |
| |
| public class RetriesExhaustedException extends RuntimeException { |
| private static final long serialVersionUID = 1876775844L; |
| |
| public RetriesExhaustedException(final String msg) { |
| super(msg); |
| } |
| |
| public RetriesExhaustedException(final String msg, final IOException e) { |
| super(msg, e); |
| } |
| |
| /** |
| * Datastructure that allows adding more info around Throwable incident. |
| */ |
| public static class ThrowableWithExtraContext { |
| private final Throwable t; |
| private final long when; |
| private final String extras; |
| |
| public ThrowableWithExtraContext(final Throwable t, final long when, |
| final String extras) { |
| this.t = t; |
| this.when = when; |
| this.extras = extras; |
| } |
| |
| @Override |
| public String toString() { |
| return new Date(this.when).toString() + ", " + extras + ", " + t.toString(); |
| } |
| } |
| |
| /** |
| * Create a new RetriesExhaustedException from the list of prior failures. |
| * @param callableVitals Details from the {@link ServerCallable} we were using |
| * when we got this exception. |
| * @param numTries The number of tries we made |
| * @param exceptions List of exceptions that failed before giving up |
| */ |
| public RetriesExhaustedException(final String callableVitals, int numTries, |
| List<Throwable> exceptions) { |
| super(getMessage(callableVitals, numTries, exceptions)); |
| } |
| |
| /** |
| * Create a new RetriesExhaustedException from the list of prior failures. |
| * @param numTries |
| * @param exceptions List of exceptions that failed before giving up |
| */ |
| public RetriesExhaustedException(final int numTries, |
| final List<Throwable> exceptions) { |
| super(getMessage(numTries, exceptions)); |
| } |
| |
| private static String getMessage(String callableVitals, int numTries, |
| List<Throwable> exceptions) { |
| StringBuilder buffer = new StringBuilder("Failed contacting "); |
| buffer.append(callableVitals); |
| buffer.append(" after "); |
| buffer.append(numTries + 1); |
| buffer.append(" attempts.\nExceptions:\n"); |
| for (Throwable t : exceptions) { |
| buffer.append(t.toString()); |
| buffer.append("\n"); |
| } |
| return buffer.toString(); |
| } |
| |
| private static String getMessage(final int numTries, |
| final List<Throwable> exceptions) { |
| StringBuilder buffer = new StringBuilder("Failed after attempts="); |
| buffer.append(numTries + 1); |
| buffer.append(", exceptions:\n"); |
| for (Throwable t : exceptions) { |
| buffer.append(t.toString()); |
| buffer.append("\n"); |
| } |
| return buffer.toString(); |
| } |
| } |