/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.transport;
import org.elasticsearch.common.ContextAndHeaderHolder;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.transport.TransportAddress;
import java.io.IOException;
/**
* The transport message is also a {@link ContextAndHeaderHolder context holder} that holds <b>transient</b> context, that is,
* the context is not serialized with message.
*/
public abstract class TransportMessage<TM extends TransportMessage<TM>> extends ContextAndHeaderHolder implements Streamable {
private TransportAddress remoteAddress;
protected TransportMessage() {
}
protected TransportMessage(TM message) {
copyContextAndHeadersFrom(message);
}
public void remoteAddress(TransportAddress remoteAddress) {
this.remoteAddress = remoteAddress;
}
public TransportAddress remoteAddress() {
return remoteAddress;
}
@Override
public void readFrom(StreamInput in) throws IOException {
headers = in.readBoolean() ? in.readMap() : null;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
if (headers == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeMap(headers);
}
}
}