/**
* 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 = Exception.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 instantiateException(
Class<? extends T> cls, String message, Throwable cause) {
Constructor<? extends T> cn;
T ex = null;
try {
cn = cls.getConstructor(String.class);
cn.setAccessible(true);
ex = cn.newInstance(message);
ex.initCause(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;
}
}