/*
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 Apr 18, 2008
*/
package com.bigdata.util.httpd;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.apache.log4j.Logger;
import com.bigdata.util.httpd.NanoHTTPD.Response;
/**
* Overrides some methods on {@link NanoHTTPD} to (a) prevent serving files from
* the local file system; and (b) to expose methods for handling GET, PUT, POST,
* and DELETE requests - these methods all return a
* {@link NanoHTTPD#HTTP_METHOD_NOT_ALLOWED} {@link Response} by default.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public abstract class AbstractHTTPD extends NanoHTTPD implements HTTPGetHandler {
final static private Logger log = Logger.getLogger(AbstractHTTPD.class);
public AbstractHTTPD(final int port) throws IOException {
super(port);
}
@Override
public Response serve(final Request req) {
if (log.isDebugEnabled()) {
log.debug("uri=" + req.uri);
log.debug("method=" + req.method);
log.debug("headers=" + req.headers);
log.debug("params=" + req.params);
} else if (log.isInfoEnabled())
log.info(req.method + " '" + req.uri + "' ");
try {
if (GET.equalsIgnoreCase(req.method)) {
return doGet(req);
} else if (POST.equalsIgnoreCase(req.method)) {
return doPost(req);
} else if (PUT.equalsIgnoreCase(req.method)) {
return doPut(req);
} else if (DELETE.equalsIgnoreCase(req.method)) {
return doDelete(req);
} else {
return new Response(HTTP_METHOD_NOT_ALLOWED, MIME_TEXT_PLAIN,
"" + req.method);
}
} catch (Throwable e) {
log.error(e.getMessage(), e);
final StringWriter w = new StringWriter();
e.printStackTrace(new PrintWriter(w));
/*
* Note: if you send an HTTP_INTERNALERROR (500) the browser won't
* display the response body so you have to send an Ok with the text
* of the error message....
*/
return new Response(HTTP_OK, MIME_TEXT_PLAIN, w.toString());
}
}
/**
* Handle a GET request.
*
* @param req
* The request
*
* @return The response.
*
* @throws Exception
*/
public Response doGet(final Request req) throws Exception {
return new Response(HTTP_METHOD_NOT_ALLOWED, MIME_TEXT_PLAIN,
req.method);
}
/**
* Handle a POST request.
*
* @param req
* The request
*
* @return The response.
*
* @throws Exception
*/
public Response doPost(final Request req) throws Exception {
return new Response(HTTP_METHOD_NOT_ALLOWED, MIME_TEXT_PLAIN,
req.method);
}
/**
* Handle a PUT request.
*
* @param req
* The request
*
* @return The response.
*
* @throws Exception
*/
public Response doPut(final Request req) throws Exception {
return new Response(HTTP_METHOD_NOT_ALLOWED, MIME_TEXT_PLAIN,
req.method);
}
/**
* Handle a DELETE request.
*
* @param req
* The request
*
* @return The response.
*
* @throws Exception
*/
public Response doDelete(final Request req) throws Exception {
return new Response(HTTP_METHOD_NOT_ALLOWED, MIME_TEXT_PLAIN,
req.method);
}
}