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Elasticsearch subproject :server
/*
* 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.Version;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;
public final class TcpTransportChannel implements TransportChannel {
private final TcpTransport transport;
private final Version version;
private final String action;
private final long requestId;
private final String profileName;
private final long reservedBytes;
private final AtomicBoolean released = new AtomicBoolean();
private final String channelType;
private final TcpChannel channel;
TcpTransportChannel(TcpTransport transport, TcpChannel channel, String channelType, String action,
long requestId, Version version, String profileName, long reservedBytes) {
this.version = version;
this.channel = channel;
this.transport = transport;
this.action = action;
this.requestId = requestId;
this.profileName = profileName;
this.reservedBytes = reservedBytes;
this.channelType = channelType;
}
@Override
public String getProfileName() {
return profileName;
}
@Override
public void sendResponse(TransportResponse response) throws IOException {
sendResponse(response, TransportResponseOptions.EMPTY);
}
@Override
public void sendResponse(TransportResponse response, TransportResponseOptions options) throws IOException {
try {
transport.sendResponse(version, channel, response, requestId, action, options);
} finally {
release(false);
}
}
@Override
public void sendResponse(Exception exception) throws IOException {
try {
transport.sendErrorResponse(version, channel, exception, requestId, action);
} finally {
release(true);
}
}
private Exception releaseBy;
private void release(boolean isExceptionResponse) {
if (released.compareAndSet(false, true)) {
assert (releaseBy = new Exception()) != null; // easier to debug if it's already closed
transport.getInFlightRequestBreaker().addWithoutBreaking(-reservedBytes);
} else if (isExceptionResponse == false) {
// only fail if we are not sending an error - we might send the error triggered by the previous
// sendResponse call
throw new IllegalStateException("reserved bytes are already released", releaseBy);
}
}
@Override
public String getChannelType() {
return channelType;
}
@Override
public Version getVersion() {
return version;
}
public TcpChannel getChannel() {
return channel;
}
}