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AsyncClientConnectionEviction.java
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AsyncClientConnectionEviction.java
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/*
* ====================================================================
* 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
* <http://www.apache.org/>.
*
*/
package org.apache.hc.client5.http.examples;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
import org.apache.hc.client5.http.async.methods.SimpleRequestProducer;
import org.apache.hc.client5.http.async.methods.SimpleResponseConsumer;
import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.io.CloseMode;
import org.apache.hc.core5.reactor.IOReactorConfig;
import org.apache.hc.core5.util.TimeValue;
import org.apache.hc.core5.util.Timeout;
/**
* Example demonstrating how to evict expired and idle connections
* from the connection pool.
*/
public class AsyncClientConnectionEviction {
public static void main(final String[] args) throws Exception {
final IOReactorConfig ioReactorConfig = IOReactorConfig.custom()
.setSoTimeout(Timeout.ofSeconds(5))
.build();
final CloseableHttpAsyncClient client = HttpAsyncClients.custom()
.setIOReactorConfig(ioReactorConfig)
.evictExpiredConnections()
.evictIdleConnections(TimeValue.ofSeconds(10))
.build();
client.start();
final SimpleHttpRequest request = SimpleRequestBuilder.get()
.setHttpHost(new HttpHost("httpbin.org"))
.setPath("/")
.build();
System.out.println("Executing request " + request);
final Future<SimpleHttpResponse> future1 = client.execute(
SimpleRequestProducer.create(request),
SimpleResponseConsumer.create(),
new FutureCallback<SimpleHttpResponse>() {
@Override
public void completed(final SimpleHttpResponse response) {
System.out.println(request + "->" + new StatusLine(response));
System.out.println(response.getBody());
}
@Override
public void failed(final Exception ex) {
System.out.println(request + "->" + ex);
}
@Override
public void cancelled() {
System.out.println(request + " cancelled");
}
});
future1.get();
Thread.sleep(TimeUnit.SECONDS.toMillis(30));
// Previous connection should get evicted from the pool by now
final Future<SimpleHttpResponse> future2 = client.execute(
request,
new FutureCallback<SimpleHttpResponse>() {
@Override
public void completed(final SimpleHttpResponse response) {
System.out.println(request + "->" + new StatusLine(response));
System.out.println(response.getBody());
}
@Override
public void failed(final Exception ex) {
System.out.println(request + "->" + ex);
}
@Override
public void cancelled() {
System.out.println(request + " cancelled");
}
});
future2.get();
System.out.println("Shutting down");
client.close(CloseMode.GRACEFUL);
}
}