/*
* Copyright (c) 2011-2014 The original author or authors
* ------------------------------------------------------
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* The Apache License v2.0 is available at
* http://www.opensource.org/licenses/apache2.0.php
*
* You may elect to redistribute this code under either of these licenses.
*/
package io.vertx.core.eventbus.impl.codecs;
import io.netty.util.CharsetUtil;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.eventbus.MessageCodec;
import io.vertx.core.eventbus.ReplyException;
import io.vertx.core.eventbus.ReplyFailure;
/**
* @author <a href="http://tfox.org">Tim Fox</a>
*/
public class ReplyExceptionMessageCodec implements MessageCodec<ReplyException, ReplyException> {
@Override
public void encodeToWire(Buffer buffer, ReplyException body) {
buffer.appendByte((byte)body.failureType().toInt());
buffer.appendInt(body.failureCode());
if (body.getMessage() == null) {
buffer.appendByte((byte)0);
} else {
buffer.appendByte((byte)1);
byte[] encoded = body.getMessage().getBytes(CharsetUtil.UTF_8);
buffer.appendInt(encoded.length);
buffer.appendBytes(encoded);
}
}
@Override
public ReplyException decodeFromWire(int pos, Buffer buffer) {
int i = (int) buffer.getByte(pos);
ReplyFailure rf = ReplyFailure.fromInt(i);
pos++;
int failureCode = buffer.getInt(pos);
pos += 4;
boolean isNull = buffer.getByte(pos) == (byte)0;
String message;
if (!isNull) {
pos++;
int strLength = buffer.getInt(pos);
pos += 4;
byte[] bytes = buffer.getBytes(pos, pos + strLength);
message = new String(bytes, CharsetUtil.UTF_8);
} else {
message = null;
}
return new ReplyException(rf, failureCode, message);
}
@Override
public ReplyException transform(ReplyException exception) {
return exception;
}
@Override
public String name() {
return "replyexception";
}
@Override
public byte systemCodecID() {
return 15;
}
}