| /** |
| * 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.hadoop.yarn.api.records.impl.pb; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.apache.hadoop.yarn.api.records.SerializedException; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.exceptions.YarnRuntimeException; |
| import org.apache.hadoop.yarn.proto.YarnProtos.SerializedExceptionProto; |
| import org.apache.hadoop.yarn.proto.YarnProtos.SerializedExceptionProtoOrBuilder; |
| |
| public class SerializedExceptionPBImpl extends SerializedException { |
| |
| SerializedExceptionProto proto = null; |
| SerializedExceptionProto.Builder builder = |
| SerializedExceptionProto.newBuilder(); |
| boolean viaProto = false; |
| |
| public SerializedExceptionPBImpl() { |
| } |
| |
| public SerializedExceptionPBImpl(SerializedExceptionProto proto) { |
| this.proto = proto; |
| viaProto = true; |
| } |
| |
| private SerializedExceptionPBImpl(Throwable t) { |
| init(t); |
| } |
| |
| public void init(String message) { |
| maybeInitBuilder(); |
| builder.setMessage(message); |
| } |
| |
| public void init(Throwable t) { |
| maybeInitBuilder(); |
| if (t == null) { |
| return; |
| } |
| |
| if (t.getCause() == null) { |
| } else { |
| builder.setCause(new SerializedExceptionPBImpl(t.getCause()).getProto()); |
| } |
| StringWriter sw = new StringWriter(); |
| PrintWriter pw = new PrintWriter(sw); |
| t.printStackTrace(pw); |
| pw.close(); |
| if (sw.toString() != null) |
| builder.setTrace(sw.toString()); |
| if (t.getMessage() != null) |
| builder.setMessage(t.getMessage()); |
| builder.setClassName(t.getClass().getCanonicalName()); |
| } |
| |
| public void init(String message, Throwable t) { |
| init(t); |
| if (message != null) |
| builder.setMessage(message); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public Throwable deSerialize() { |
| |
| SerializedException cause = getCause(); |
| SerializedExceptionProtoOrBuilder p = viaProto ? proto : builder; |
| Class<?> realClass = null; |
| try { |
| realClass = Class.forName(p.getClassName()); |
| } catch (ClassNotFoundException e) { |
| throw new YarnRuntimeException(e); |
| } |
| Class classType = null; |
| if (YarnException.class.isAssignableFrom(realClass)) { |
| classType = YarnException.class; |
| } else if (IOException.class.isAssignableFrom(realClass)) { |
| classType = IOException.class; |
| } else if (RuntimeException.class.isAssignableFrom(realClass)) { |
| classType = RuntimeException.class; |
| } else { |
| classType = Throwable.class; |
| } |
| return instantiateException(realClass.asSubclass(classType), getMessage(), |
| cause == null ? null : cause.deSerialize()); |
| } |
| |
| @Override |
| public String getMessage() { |
| SerializedExceptionProtoOrBuilder p = viaProto ? proto : builder; |
| return p.getMessage(); |
| } |
| |
| @Override |
| public String getRemoteTrace() { |
| SerializedExceptionProtoOrBuilder p = viaProto ? proto : builder; |
| return p.getTrace(); |
| } |
| |
| @Override |
| public SerializedException getCause() { |
| SerializedExceptionProtoOrBuilder p = viaProto ? proto : builder; |
| if (p.hasCause()) { |
| return new SerializedExceptionPBImpl(p.getCause()); |
| } else { |
| return null; |
| } |
| } |
| |
| public SerializedExceptionProto getProto() { |
| proto = viaProto ? proto : builder.build(); |
| viaProto = true; |
| return proto; |
| } |
| |
| @Override |
| public int hashCode() { |
| return getProto().hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (other == null) { |
| return false; |
| } |
| if (other.getClass().isAssignableFrom(this.getClass())) { |
| return this.getProto().equals(this.getClass().cast(other).getProto()); |
| } |
| return false; |
| } |
| |
| private void maybeInitBuilder() { |
| if (viaProto || builder == null) { |
| builder = SerializedExceptionProto.newBuilder(proto); |
| } |
| viaProto = false; |
| } |
| |
| private static <T extends Throwable> T instantiateExceptionImpl( |
| String message, Class<? extends T> cls, Throwable cause) |
| throws NoSuchMethodException, InstantiationException, |
| IllegalAccessException, InvocationTargetException { |
| Constructor<? extends T> cn; |
| T ex = null; |
| cn = |
| cls.getConstructor(message == null ? new Class[0] |
| : new Class[] {String.class}); |
| cn.setAccessible(true); |
| ex = message == null ? cn.newInstance() : cn.newInstance(message); |
| ex.initCause(cause); |
| return ex; |
| } |
| |
| private static <T extends Throwable> T instantiateException( |
| Class<? extends T> cls, String message, Throwable cause) { |
| T ex = null; |
| try { |
| // Try constructor with String argument, if it fails, try default. |
| try { |
| ex = instantiateExceptionImpl(message, cls, cause); |
| } catch (NoSuchMethodException e) { |
| ex = instantiateExceptionImpl(null, cls, cause); |
| } |
| } catch (SecurityException e) { |
| throw new YarnRuntimeException(e); |
| } catch (NoSuchMethodException e) { |
| throw new YarnRuntimeException(e); |
| } catch (IllegalArgumentException e) { |
| throw new YarnRuntimeException(e); |
| } catch (InstantiationException e) { |
| throw new YarnRuntimeException(e); |
| } catch (IllegalAccessException e) { |
| throw new YarnRuntimeException(e); |
| } catch (InvocationTargetException e) { |
| throw new YarnRuntimeException(e); |
| } |
| return ex; |
| } |
| } |