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/*******************************************************************************
* Copyright (c) 2006 - 2006 Mylar eclipse.org project and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Mylar project committers - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.trac.core.util;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.net.HttpURLConnection;
import java.net.Proxy;
import org.apache.commons.httpclient.Cookie;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpVersion;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.XmlRpcRequest;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientException;
import org.apache.xmlrpc.client.XmlRpcCommonsTransport;
import org.apache.xmlrpc.client.XmlRpcHttpClientConfig;
import org.apache.xmlrpc.client.XmlRpcTransport;
import org.apache.xmlrpc.client.XmlRpcTransportFactory;
import org.eclipse.mylyn.web.core.WebClientUtil;
/**
* A custom transport factory used to establish XML-RPC connections. Uses the Mylar proxy settings.
*
* @author Steffen Pingel
*/
public class TracHttpClientTransportFactory implements XmlRpcTransportFactory {
public static class TracHttpException extends XmlRpcException {
private static final long serialVersionUID = 9032521978140685830L;
public TracHttpException(int responseCode) {
super(responseCode, "HTTP Error " + responseCode);
}
}
/**
* A transport that uses the Apache HttpClient library.
*/
public static class TracHttpClientTransport extends XmlRpcCommonsTransport {
private Proxy proxy;
private Cookie[] cookies;
public TracHttpClientTransport(XmlRpcClient client, Proxy proxy, Cookie[] cookies) {
super(client);
this.proxy = proxy;
this.cookies = cookies;
XmlRpcHttpClientConfig config = (XmlRpcHttpClientConfig) client.getConfig();
// this needs to be set to avoid exceptions
getHttpClient().getParams().setAuthenticationPreemptive(config.getBasicUserName() != null);
}
@Override
protected String getUserAgent() {
return WebClientUtil.USER_AGENT;
}
public HttpClient getHttpClient() {
return (HttpClient) getValue("client");
}
public PostMethod getMethod() {
return (PostMethod) getValue("method");
}
public void setMethod(PostMethod method) {
setValue("method", method);
}
private Object getValue(String name) {
try {
Field field = XmlRpcCommonsTransport.class.getDeclaredField(name);
field.setAccessible(true);
return field.get(this);
} catch (Throwable t) {
throw new RuntimeException("Internal error accessing field: " + name, t);
}
}
private void setValue(String name, Object value) {
try {
Field field = XmlRpcCommonsTransport.class.getDeclaredField(name);
field.setAccessible(true);
field.set(this, value);
} catch (Throwable t) {
throw new RuntimeException("Internal error accessing field: " + name, t);
}
}
@Override
protected InputStream getInputStream() throws XmlRpcException {
int responseCode = getMethod().getStatusCode();
if (responseCode != HttpURLConnection.HTTP_OK) {
throw new TracHttpException(responseCode);
}
return super.getInputStream();
}
@Override
protected void initHttpHeaders(XmlRpcRequest request) throws XmlRpcClientException {
// super call needed to initialize private fields of XmlRpcCommonsTransport
super.initHttpHeaders(request);
// The super method sets a private field that contains the
// HttpClient Method object which is initialized using the wrong url.
// Since the URL can not be modified once the Method object has been
// constructed a new object is constructed here, initialized and
// assigned to the private field
XmlRpcHttpClientConfig config = (XmlRpcHttpClientConfig) request.getConfig();
String url = config.getServerURL().toString();
WebClientUtil.setupHttpClient(getHttpClient(), proxy, url, null, null);
if (cookies != null) {
getHttpClient().getState().addCookies(cookies);
}
PostMethod method = new PostMethod(WebClientUtil.getRequestPath(url));
setMethod(method);
setRequestHeader("Content-Type", "text/xml");
setRequestHeader("User-Agent", getUserAgent());
setCredentials(config);
setCompressionHeaders(config);
if (config.getConnectionTimeout() != 0)
getHttpClient().getHttpConnectionManager().getParams().setConnectionTimeout(
config.getConnectionTimeout());
if (config.getReplyTimeout() != 0)
getHttpClient().getHttpConnectionManager().getParams().setSoTimeout(config.getConnectionTimeout());
method.getParams().setVersion(HttpVersion.HTTP_1_1);
}
}
private XmlRpcClient client;
private Proxy proxy;
private Cookie[] cookies;
public TracHttpClientTransportFactory(XmlRpcClient client) {
this.client = client;
}
public XmlRpcTransport getTransport() {
return new TracHttpClientTransport(client, proxy, cookies);
}
public Proxy getProxy() {
return proxy;
}
public void setProxy(Proxy proxy) {
this.proxy = proxy;
}
public Cookie[] getCookies() {
return cookies;
}
public void setCookies(Cookie[] cookies) {
this.cookies = cookies;
}
}
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