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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 org.elasticsearch.common.breaker.CircuitBreaker;
import org.elasticsearch.indices.breaker.CircuitBreakerService;
import java.io.IOException;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
public final class TcpTransportChannel implements TransportChannel {
private final AtomicBoolean released = new AtomicBoolean();
private final OutboundHandler outboundHandler;
private final TcpChannel channel;
private final String action;
private final long requestId;
private final Version version;
private final Set features;
private final CircuitBreakerService breakerService;
private final long reservedBytes;
private final boolean compressResponse;
TcpTransportChannel(OutboundHandler outboundHandler, TcpChannel channel, String action, long requestId, Version version,
Set features, CircuitBreakerService breakerService, long reservedBytes, boolean compressResponse) {
this.version = version;
this.features = features;
this.channel = channel;
this.outboundHandler = outboundHandler;
this.action = action;
this.requestId = requestId;
this.breakerService = breakerService;
this.reservedBytes = reservedBytes;
this.compressResponse = compressResponse;
}
@Override
public String getProfileName() {
return channel.getProfile();
}
@Override
public void sendResponse(TransportResponse response) throws IOException {
try {
outboundHandler.sendResponse(version, features, channel, requestId, action, response, compressResponse, false);
} finally {
release(false);
}
}
@Override
public void sendResponse(Exception exception) throws IOException {
try {
outboundHandler.sendErrorResponse(version, features, channel, requestId, action, exception);
} 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
breakerService.getBreaker(CircuitBreaker.IN_FLIGHT_REQUESTS).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 "transport";
}
@Override
public Version getVersion() {
return version;
}
public TcpChannel getChannel() {
return channel;
}
}