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//
// ========================================================================
// Copyright (c) 1995-2015 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.rhttp.client;
import java.io.ByteArrayOutputStream;
import java.io.EOFException;
import java.io.IOException;
import org.eclipse.jetty.client.Address;
import org.eclipse.jetty.client.ContentExchange;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.client.HttpExchange;
import org.eclipse.jetty.http.HttpMethods;
import org.eclipse.jetty.http.HttpURI;
import org.eclipse.jetty.io.Buffer;
import org.eclipse.jetty.io.ByteArrayBuffer;
import org.eclipse.jetty.io.EofException;
/**
* Implementation of {@link RHTTPClient} that uses Jetty's HttpClient.
*
* @version $Revision$ $Date$
*/
public class JettyClient extends AbstractClient
{
private final HttpClient httpClient;
private final Address gatewayAddress;
private final String gatewayPath;
public JettyClient(HttpClient httpClient, Address gatewayAddress, String gatewayPath, String targetId)
{
super(targetId);
this.httpClient = httpClient;
this.gatewayAddress = gatewayAddress;
this.gatewayPath = gatewayPath;
}
public JettyClient(HttpClient httpClient, String gatewayURI, String targetId)
{
super(targetId);
HttpURI uri = new HttpURI(gatewayURI);
this.httpClient = httpClient;
this.gatewayAddress = new Address(uri.getHost(),uri.getPort());
this.gatewayPath = uri.getPath();
}
public String getHost()
{
return gatewayAddress.getHost();
}
public int getPort()
{
return gatewayAddress.getPort();
}
public String getPath()
{
return gatewayPath;
}
@Override
protected void doStart() throws Exception
{
httpClient.start();
super.doStart();
}
@Override
protected void doStop() throws Exception
{
super.doStop();
httpClient.stop();
}
protected void syncHandshake() throws IOException
{
HandshakeExchange exchange = new HandshakeExchange();
exchange.setMethod(HttpMethods.POST);
exchange.setAddress(gatewayAddress);
exchange.setURI(gatewayPath + "/" + urlEncode(getTargetId()) + "/handshake");
httpClient.send(exchange);
getLogger().debug("Client {} handshake sent to gateway", getTargetId(), null);
try
{
int exchangeStatus = exchange.waitForDone();
if (exchangeStatus != HttpExchange.STATUS_COMPLETED)
throw new IOException("Handshake failed");
if (exchange.getResponseStatus() != 200)
throw new IOException("Handshake failed");
getLogger().debug("Client {} handshake returned from gateway", getTargetId(), null);
}
catch (InterruptedException x)
{
Thread.currentThread().interrupt();
throw newIOException(x);
}
}
private IOException newIOException(Throwable x)
{
return (IOException)new IOException().initCause(x);
}
protected void asyncConnect()
{
try
{
ConnectExchange exchange = new ConnectExchange();
exchange.setMethod(HttpMethods.POST);
exchange.setAddress(gatewayAddress);
exchange.setURI(gatewayPath + "/" + urlEncode(getTargetId()) + "/connect");
httpClient.send(exchange);
getLogger().debug("Client {} connect sent to gateway", getTargetId(), null);
}
catch (IOException x)
{
getLogger().debug("Could not send exchange", x);
throw new RuntimeException(x);
}
}
protected void syncDisconnect() throws IOException
{
DisconnectExchange exchange = new DisconnectExchange();
exchange.setMethod(HttpMethods.POST);
exchange.setAddress(gatewayAddress);
exchange.setURI(gatewayPath + "/" + urlEncode(getTargetId()) + "/disconnect");
httpClient.send(exchange);
getLogger().debug("Client {} disconnect sent to gateway", getTargetId(), null);
try
{
int status = exchange.waitForDone();
if (status != HttpExchange.STATUS_COMPLETED)
throw new IOException("Disconnect failed");
if (exchange.getResponseStatus() != 200)
throw new IOException("Disconnect failed");
getLogger().debug("Client {} disconnect returned from gateway", getTargetId(), null);
}
catch (InterruptedException x)
{
Thread.currentThread().interrupt();
throw newIOException(x);
}
}
protected void asyncDeliver(RHTTPResponse response)
{
try
{
DeliverExchange exchange = new DeliverExchange(response);
exchange.setMethod(HttpMethods.POST);
exchange.setAddress(gatewayAddress);
exchange.setURI(gatewayPath + "/" + urlEncode(getTargetId()) + "/deliver");
exchange.setRequestContent(new ByteArrayBuffer(response.getFrameBytes()));
httpClient.send(exchange);
getLogger().debug("Client {} deliver sent to gateway, response {}", getTargetId(), response);
}
catch (IOException x)
{
getLogger().debug("Could not send exchange", x);
throw new RuntimeException(x);
}
}
protected class HandshakeExchange extends ContentExchange
{
protected HandshakeExchange()
{
super(true);
}
@Override
protected void onConnectionFailed(Throwable x)
{
getLogger().warn(x.toString());
getLogger().debug(x);
}
}
protected class ConnectExchange extends ContentExchange
{
private final ByteArrayOutputStream content = new ByteArrayOutputStream();
protected ConnectExchange()
{
super(true);
}
@Override
protected void onResponseContent(Buffer buffer) throws IOException
{
buffer.writeTo(content);
}
@Override
protected void onResponseComplete()
{
int responseStatus = getResponseStatus();
if (responseStatus == 200)
{
try
{
connectComplete(content.toByteArray());
}
catch (IOException x)
{
onException(x);
}
}
else if (responseStatus == 401)
{
notifyConnectRequired();
}
else
{
notifyConnectException();
}
}
@Override
protected void onException(Throwable x)
{
getLogger().debug(x);
if (x instanceof EofException || x instanceof EOFException)
{
notifyConnectClosed();
}
else
{
notifyConnectException();
}
}
@Override
protected void onConnectionFailed(Throwable x)
{
getLogger().debug(x);
}
}
protected class DisconnectExchange extends ContentExchange
{
protected DisconnectExchange()
{
super(true);
}
}
protected class DeliverExchange extends ContentExchange
{
private final RHTTPResponse response;
protected DeliverExchange(RHTTPResponse response)
{
super(true);
this.response = response;
}
@Override
protected void onResponseComplete() throws IOException
{
int responseStatus = getResponseStatus();
if (responseStatus == 401)
{
notifyConnectRequired();
}
else if (responseStatus != 200)
{
notifyDeliverException(response);
}
}
@Override
protected void onException(Throwable x)
{
getLogger().debug(x);
notifyDeliverException(response);
}
@Override
protected void onConnectionFailed(Throwable x)
{
getLogger().debug(x);
}
}
}
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