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Apache Synapse - Non-blocking HTTP/s Transport
/*
* 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.synapse.transport.utils.conn;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.config.MessageConstraints;
import org.apache.http.entity.ContentLengthStrategy;
import org.apache.http.impl.nio.DefaultNHttpClientConnection;
import org.apache.http.nio.NHttpClientEventHandler;
import org.apache.http.nio.NHttpMessageParserFactory;
import org.apache.http.nio.NHttpMessageWriterFactory;
import org.apache.http.nio.reactor.IOSession;
import org.apache.http.nio.util.ByteBufferAllocator;
import org.apache.synapse.transport.passthru.TargetHandler;
import java.io.IOException;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
/**
* An extension of the DefaultNHttpClientConnection class, that has some
* additional stuff related to synapse NHttp transport implementation
*/
public class SynapseNHttpClientConnection extends DefaultNHttpClientConnection {
private boolean markedForRelease = false;
public SynapseNHttpClientConnection(IOSession session,
int bufferSize,
int fragmentSizeHint,
ByteBufferAllocator allocator,
CharsetDecoder charDecoder,
CharsetEncoder charEncoder,
MessageConstraints constraints,
ContentLengthStrategy incomingContentStrategy,
ContentLengthStrategy outgoingContentStrategy,
NHttpMessageWriterFactory requestWriterFactory,
NHttpMessageParserFactory responseParserFactory) {
super(session, bufferSize, fragmentSizeHint, allocator,
charDecoder, charEncoder, constraints, incomingContentStrategy,
outgoingContentStrategy, requestWriterFactory, responseParserFactory);
}
@Override
public void close() throws IOException {
super.close();
}
@Override
public void shutdown() throws IOException {
super.shutdown();
}
@Override
public void submitRequest(final HttpRequest request) throws IOException, HttpException {
super.submitRequest(request);
}
@Override
public void consumeInput(final NHttpClientEventHandler handler) {
super.consumeInput(handler);
if (markedForRelease) {
if (handler instanceof TargetHandler) {
resetState();
((TargetHandler) handler).getTargetConfiguration().getConnections().releaseConnection(this);
}
}
}
@Override
public void produceOutput(final NHttpClientEventHandler handler) {
super.produceOutput(handler);
}
/**
* Mark this connection to be released to the pool.
*
* This needs to be called after finishing work related to a particular request/response,
* and only when keep-alive is enabled
*/
public void markForRelease() {
this.markedForRelease = true;
}
private void resetState() {
markedForRelease = false;
}
}