| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.client; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.net.SocketAddress; |
| import java.net.SocketException; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.SocketChannel; |
| import java.util.Map; |
| |
| import org.eclipse.jetty.client.api.Connection; |
| import org.eclipse.jetty.io.EndPoint; |
| import org.eclipse.jetty.io.ManagedSelector; |
| import org.eclipse.jetty.io.SelectChannelEndPoint; |
| import org.eclipse.jetty.io.SelectorManager; |
| import org.eclipse.jetty.io.ssl.SslClientConnectionFactory; |
| import org.eclipse.jetty.util.Promise; |
| import org.eclipse.jetty.util.annotation.ManagedAttribute; |
| import org.eclipse.jetty.util.annotation.ManagedObject; |
| import org.eclipse.jetty.util.component.ContainerLifeCycle; |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| |
| @ManagedObject |
| public abstract class AbstractHttpClientTransport extends ContainerLifeCycle implements HttpClientTransport |
| { |
| protected static final Logger LOG = Log.getLogger(HttpClientTransport.class); |
| |
| private final int selectors; |
| private volatile HttpClient client; |
| private volatile SelectorManager selectorManager; |
| |
| protected AbstractHttpClientTransport(int selectors) |
| { |
| this.selectors = selectors; |
| } |
| |
| protected HttpClient getHttpClient() |
| { |
| return client; |
| } |
| |
| @Override |
| public void setHttpClient(HttpClient client) |
| { |
| this.client = client; |
| } |
| |
| @ManagedAttribute(value = "The number of selectors", readonly = true) |
| public int getSelectors() |
| { |
| return selectors; |
| } |
| |
| @Override |
| protected void doStart() throws Exception |
| { |
| selectorManager = newSelectorManager(client); |
| selectorManager.setConnectTimeout(client.getConnectTimeout()); |
| addBean(selectorManager); |
| super.doStart(); |
| } |
| |
| @Override |
| protected void doStop() throws Exception |
| { |
| super.doStop(); |
| removeBean(selectorManager); |
| } |
| |
| @Override |
| public void connect(InetSocketAddress address, Map<String, Object> context) |
| { |
| SocketChannel channel = null; |
| try |
| { |
| channel = SocketChannel.open(); |
| HttpDestination destination = (HttpDestination)context.get(HTTP_DESTINATION_CONTEXT_KEY); |
| HttpClient client = destination.getHttpClient(); |
| SocketAddress bindAddress = client.getBindAddress(); |
| if (bindAddress != null) |
| channel.bind(bindAddress); |
| configure(client, channel); |
| |
| context.put(SslClientConnectionFactory.SSL_PEER_HOST_CONTEXT_KEY, destination.getHost()); |
| context.put(SslClientConnectionFactory.SSL_PEER_PORT_CONTEXT_KEY, destination.getPort()); |
| |
| if (client.isConnectBlocking()) |
| { |
| channel.socket().connect(address, (int)client.getConnectTimeout()); |
| channel.configureBlocking(false); |
| selectorManager.accept(channel, context); |
| } |
| else |
| { |
| channel.configureBlocking(false); |
| if (channel.connect(address)) |
| selectorManager.accept(channel, context); |
| else |
| selectorManager.connect(channel, context); |
| } |
| } |
| // Must catch all exceptions, since some like |
| // UnresolvedAddressException are not IOExceptions. |
| catch (Throwable x) |
| { |
| // If IPv6 is not deployed, a generic SocketException "Network is unreachable" |
| // exception is being thrown, so we attempt to provide a better error message. |
| if (x.getClass() == SocketException.class) |
| x = new SocketException("Could not connect to " + address).initCause(x); |
| |
| try |
| { |
| if (channel != null) |
| channel.close(); |
| } |
| catch (IOException xx) |
| { |
| LOG.ignore(xx); |
| } |
| finally |
| { |
| connectFailed(context, x); |
| } |
| } |
| } |
| |
| protected void connectFailed(Map<String, Object> context, Throwable x) |
| { |
| if (LOG.isDebugEnabled()) |
| LOG.debug("Could not connect to {}", context.get(HTTP_DESTINATION_CONTEXT_KEY)); |
| @SuppressWarnings("unchecked") |
| Promise<Connection> promise = (Promise<Connection>)context.get(HTTP_CONNECTION_PROMISE_CONTEXT_KEY); |
| promise.failed(x); |
| } |
| |
| protected void configure(HttpClient client, SocketChannel channel) throws IOException |
| { |
| channel.socket().setTcpNoDelay(client.isTCPNoDelay()); |
| } |
| |
| protected SelectorManager newSelectorManager(HttpClient client) |
| { |
| return new ClientSelectorManager(client, selectors); |
| } |
| |
| protected class ClientSelectorManager extends SelectorManager |
| { |
| private final HttpClient client; |
| |
| protected ClientSelectorManager(HttpClient client, int selectors) |
| { |
| super(client.getExecutor(), client.getScheduler(), selectors); |
| this.client = client; |
| } |
| |
| @Override |
| protected EndPoint newEndPoint(SocketChannel channel, ManagedSelector selector, SelectionKey key) |
| { |
| return new SelectChannelEndPoint(channel, selector, key, getScheduler(), client.getIdleTimeout()); |
| } |
| |
| @Override |
| public org.eclipse.jetty.io.Connection newConnection(SocketChannel channel, EndPoint endPoint, Object attachment) throws IOException |
| { |
| @SuppressWarnings("unchecked") |
| Map<String, Object> context = (Map<String, Object>)attachment; |
| HttpDestination destination = (HttpDestination)context.get(HTTP_DESTINATION_CONTEXT_KEY); |
| return destination.getClientConnectionFactory().newConnection(endPoint, context); |
| } |
| |
| @Override |
| protected void connectionFailed(SocketChannel channel, Throwable x, Object attachment) |
| { |
| @SuppressWarnings("unchecked") |
| Map<String, Object> context = (Map<String, Object>)attachment; |
| connectFailed(context, x); |
| } |
| } |
| } |