/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.hc.core5.http.nio.support;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.http.EntityDetails;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpRequest;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.HttpStatus;
import org.apache.hc.core5.http.nio.AsyncClientExchangeHandler;
import org.apache.hc.core5.http.nio.AsyncRequestProducer;
import org.apache.hc.core5.http.nio.AsyncResponseConsumer;
import org.apache.hc.core5.http.nio.CapacityChannel;
import org.apache.hc.core5.http.nio.DataStreamChannel;
import org.apache.hc.core5.http.nio.RequestChannel;
import org.apache.hc.core5.util.Args;
/**
* @since 5.0
*/
public class BasicClientExchangeHandler implements AsyncClientExchangeHandler {
private final AsyncRequestProducer requestProducer;
private final AsyncResponseConsumer responseConsumer;
private final FutureCallback resultCallback;
private final AtomicBoolean outputTerminated;
public BasicClientExchangeHandler(
final AsyncRequestProducer requestProducer,
final AsyncResponseConsumer responseConsumer,
final FutureCallback resultCallback) {
this.requestProducer = Args.notNull(requestProducer, "Request producer");
this.responseConsumer = Args.notNull(responseConsumer, "Response consumer");
this.resultCallback = resultCallback;
this.outputTerminated = new AtomicBoolean(false);
}
@Override
public void produceRequest(final RequestChannel requestChannel) throws HttpException, IOException {
final HttpRequest request = requestProducer.produceRequest();
final EntityDetails entityDetails = requestProducer.getEntityDetails();
requestChannel.sendRequest(request, entityDetails);
}
@Override
public int available() {
return requestProducer.available();
}
@Override
public void produce(final DataStreamChannel channel) throws IOException {
if (outputTerminated.get()) {
channel.endStream();
return;
}
requestProducer.produce(channel);
}
@Override
public void consumeInformation(final HttpResponse response) throws HttpException, IOException {
}
@Override
public void consumeResponse(final HttpResponse response, final EntityDetails entityDetails) throws HttpException, IOException {
if (response.getCode() >= HttpStatus.SC_CLIENT_ERROR) {
outputTerminated.set(true);
requestProducer.releaseResources();
}
responseConsumer.consumeResponse(response, entityDetails, new FutureCallback() {
@Override
public void completed(final T result) {
if (resultCallback != null) {
resultCallback.completed(result);
}
}
@Override
public void failed(final Exception ex) {
if (resultCallback != null) {
resultCallback.failed(ex);
}
}
@Override
public void cancelled() {
if (resultCallback != null) {
resultCallback.cancelled();
}
}
});
}
@Override
public void cancel() {
if (resultCallback != null) {
resultCallback.cancelled();
}
releaseResources();
}
@Override
public void updateCapacity(final CapacityChannel capacityChannel) throws IOException {
responseConsumer.updateCapacity(capacityChannel);
}
@Override
public int consume(final ByteBuffer src) throws IOException {
return responseConsumer.consume(src);
}
@Override
public void streamEnd(final List extends Header> trailers) throws HttpException, IOException {
responseConsumer.streamEnd(trailers);
}
@Override
public final void failed(final Exception cause) {
if (resultCallback != null) {
resultCallback.failed(cause);
}
requestProducer.failed(cause);
responseConsumer.failed(cause);
releaseResources();
}
@Override
public final void releaseResources() {
requestProducer.releaseResources();
responseConsumer.releaseResources();
}
}