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/*
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
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* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
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*/
package org.glassfish.scripting.jython.grizzly;
import com.sun.grizzly.tcp.http11.GrizzlyResponse;
import java.io.IOException;
import java.util.List;
/**
*/
public class WSGIResponse implements Response {
/* From the WSGI spec:
The start_response parameter is a callable accepting two required positional arguments, and one optional argument.
For the sake of illustration, we have named these arguments status, response_headers, and exc_info,
but they are not required to have these names, and the application must invoke the start_response callable
using positional arguments (e.g. start_response(status,response_headers)).
The status parameter is a status string of the form "999 Message here",
and response_headers is a list of (header_name,header_value) tuples describing the HTTP response header.
The optional exc_info parameter is described below in the sections on The start_response() Callable and Error Handling.
It is used only when the application has trapped an error and is attempting to display an error message to the browser.
The start_response callable must return a write(body_data) callable that takes one positional parameter:
a string to be written as part of the HTTP response body.
(Note: the write() callable is provided only to support certain existing frameworks' imperative output APIs;
it should not be used by new applications or frameworks if it can be avoided.
See the Buffering and Streaming section for more details.)
The exec_info object, if passed, will be a sys.exec_info tuple, used to report errors. It is described at
http://pyref.infogami.com/sys.exc_info
*/
private BodyWriter theWriter;
private GrizzlyResponse myResponse;
public static WSGIResponse create(GrizzlyResponse res) {
// set ourselves up to talk to the provided response
return new WSGIResponse(res);
}
public BodyWriter __call__(String status, List response_headers) {
// No error has happened. Write the status normally and such.
int statnum = Integer.parseInt(status.substring(0, status.indexOf(" "))); // parse out the integer status code
myResponse.setStatus(statnum);
// Write each header
for (List header : response_headers) {
String h_name = header.get(0).toString();
String h_value = header.get(1).toString();
myResponse.setHeader(h_name, h_value);
}
// Done setting headers, return the bodyWriter
return theWriter;
}
public BodyWriter __call__(String status, List response_headers, List exec_info) {
// An error has happened, and the application is trying to report that to the browser.
__call__(status, response_headers); // set up the headers and such as normal
for (Object error_status : exec_info) {
// We know that these are python objects, but Java doesn't. Hope that toString() is sane
theWriter.__call__(error_status.toString());
}
return theWriter;
}
private WSGIResponse(GrizzlyResponse res) {
myResponse = res;
try {
theWriter = new WSGIBodyWriter(res.getWriter());
} catch (IOException e) {
System.err.println("WSGI wrapper cancels Construct Self: Interrupted by IOException");
e.printStackTrace();
}
}
}
