/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Mar 27, 2012
*/
package com.bigdata.rdf.sail.webapp.client;
import org.apache.http.HttpEntity;
/**
* Options for the HTTP connection.
*/
public class ConnectOptions extends AbstractConnectOptions {
/**
* Request entity.
*
* TODO This field is read/written by the {@link RemoteRepository}. We should
* try to encapsulate this within the scope of the logic that manages its
* value and pass it through function calls rather than by side effect on
* this object.
*/
public HttpEntity entity = null;
private volatile String requestURL;
/**
* Return the effective request URL
*
* @param contextPath
* The context path of the web application.
* @param useLBS
* When <code>true</code> the load balancer aware paths will be
* used.
*
* @return The effective request URL (cached).
*/
public String getRequestURL(final String contextPath, final boolean useLBS) {
if (contextPath == null)
throw new IllegalArgumentException();
if (requestURL == null) {
if (useLBS) {
/*
* Use the HA load balancer.
*/
// Index of the WebApp ContextPath in the serviceURL.
final int startContextPath = serviceURL.indexOf(contextPath);
// Index of the last character in the context path.
final int endContextPath = startContextPath + contextPath.length();
// The base URL (up to and including the context path).
final String baseURL = serviceURL.substring(0, endContextPath);
// Everything after that baseURL.
final String rest = serviceURL.substring(endContextPath);
if (update) {
// Request should be proxied to the leader.
requestURL = baseURL + "/LBS/leader" + rest;
} else {
// Request should be load balanced over the services.
requestURL = baseURL + "/LBS/read" + rest;
}
} else {
// Use the URL as given.
requestURL = serviceURL;
}
}
return requestURL;
}
/**
* Return the best URL for error reporting purposes. This is the
* <code>serviceURL</code> provided to the constructor unless the
* {@link #getRequestURL(String, boolean)} has been set, in which case that
* is returned instead.
*/
public String getBestRequestURL() {
String url = requestURL;
if(url == null) {
url = serviceURL;
}
return url;
}
public ConnectOptions(final String serviceURL) {
super(serviceURL);
}
}