/*
* ====================================================================
* 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.http.impl.nio.bootstrap;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.http.ExceptionLogger;
import org.apache.http.impl.nio.DefaultHttpServerIODispatch;
import org.apache.http.impl.nio.DefaultNHttpServerConnection;
import org.apache.http.impl.nio.reactor.DefaultListeningIOReactor;
import org.apache.http.impl.nio.reactor.IOReactorConfig;
import org.apache.http.nio.NHttpConnectionFactory;
import org.apache.http.nio.protocol.HttpAsyncService;
import org.apache.http.nio.reactor.IOEventDispatch;
import org.apache.http.nio.reactor.IOReactorException;
import org.apache.http.nio.reactor.IOReactorExceptionHandler;
import org.apache.http.nio.reactor.ListenerEndpoint;
/**
* @since 4.4
*/
public class HttpServer {
enum Status { READY, ACTIVE, STOPPING }
private final int port;
private final InetAddress ifAddress;
private final IOReactorConfig ioReactorConfig;
private final HttpAsyncService httpService;
private final NHttpConnectionFactory<? extends DefaultNHttpServerConnection> connectionFactory;
private final ExceptionLogger exceptionLogger;
private final ExecutorService listenerExecutorService;
private final ThreadGroup dispatchThreads;
private final AtomicReference<Status> status;
private final DefaultListeningIOReactor ioReactor;
private volatile ListenerEndpoint endpoint;
HttpServer(
final int port,
final InetAddress ifAddress,
final IOReactorConfig ioReactorConfig,
final HttpAsyncService httpService,
final NHttpConnectionFactory<? extends DefaultNHttpServerConnection> connectionFactory,
final ExceptionLogger exceptionLogger) {
this.port = port;
this.ifAddress = ifAddress;
this.ioReactorConfig = ioReactorConfig;
this.httpService = httpService;
this.connectionFactory = connectionFactory;
this.exceptionLogger = exceptionLogger;
this.listenerExecutorService = Executors.newSingleThreadExecutor(
new ThreadFactoryImpl("HTTP-listener-" + this.port));
this.dispatchThreads = new ThreadGroup("I/O-dispatchers");
try {
this.ioReactor = new DefaultListeningIOReactor(
this.ioReactorConfig,
new ThreadFactoryImpl("I/O-dispatch", this.dispatchThreads));
} catch (IOReactorException ex) {
throw new IllegalStateException(ex);
}
this.ioReactor.setExceptionHandler(new IOReactorExceptionHandler() {
@Override
public boolean handle(final IOException ex) {
exceptionLogger.log(ex);
return false;
}
@Override
public boolean handle(final RuntimeException ex) {
exceptionLogger.log(ex);
return false;
}
});
this.status = new AtomicReference<Status>(Status.READY);
}
public ListenerEndpoint getEndpoint() {
return this.endpoint;
}
public void start() throws IOException {
if (this.status.compareAndSet(Status.READY, Status.ACTIVE)) {
this.endpoint = this.ioReactor.listen(new InetSocketAddress(this.ifAddress, this.port > 0 ? this.port : 0));
final IOEventDispatch ioEventDispatch = new DefaultHttpServerIODispatch(
this.httpService, this.connectionFactory);
this.listenerExecutorService.execute(new Runnable() {
@Override
public void run() {
try {
ioReactor.execute(ioEventDispatch);
} catch (Exception ex) {
exceptionLogger.log(ex);
}
}
});
}
}
public void awaitTermination(final long timeout, final TimeUnit timeUnit) throws InterruptedException {
this.listenerExecutorService.awaitTermination(timeout, timeUnit);
}
public void shutdown(final long gracePeriod, final TimeUnit timeUnit) {
if (this.status.compareAndSet(Status.ACTIVE, Status.STOPPING)) {
try {
this.ioReactor.shutdown(timeUnit.toMillis(gracePeriod));
} catch (IOException ex) {
this.exceptionLogger.log(ex);
}
}
}
}