Webware for Python

I just committed various minor tweaks and changes to the PSP
documentation and examples.

No code changes.

Jay

Invoking a plain old PSP page with parameters tacked onto the end of the
URL gives me this:

BEGIN REQUEST
Sat Oct 14 01:11:43 2000
receiving request from <socket object, fd=7, family=2, type=1, protocol=0>
received 1302 bytes
request has keys: format, time, environ, input
request uri = /foci/foci/view_petition.psp?count=0
[Sat Oct 14 01:11:43 2000] [error] WebKit: Error while executing script
None
Traceback (innermost last):
  File "Application.py", line 280, in dispatchRequest
    self.handleGoodURL(transaction)
  File "Application.py", line 371, in handleGoodURL
    self.createServletInTransaction(transaction)
  File "Application.py", line 690, in createServletInTransaction
    cache = {
  File "/var/tmp/python-root/usr/lib/python1.5/posixpath.py", line 140, in
getmtime
    st = os.stat(filename)
OSError: [Errno 2] No such file or directory:
'/home/httpd/html/foci/foci/view_petition.psp?count=0'
connection closed.
0.04 secs
END REQUEST

Which suggests that the appserver is not properly splitting the fields out
from the URL and parsing the filename...

-- 
   Fun-Loving * Tripp Lilley  *  http://stargate.eheart.sg505.net/~tlilley/
------------------------------------------------------------------------------
  "That's weak sh*t, from a weak mind, and a weak mind creates weak rhymes.
   You ain't never kicked knowledge one time."

  - Ice-T, "The Syndicate"

On Sat, 14 Oct 2000, Tripp Lilley wrote:

> Invoking a plain old PSP page with parameters tacked onto the end of the
> URL gives me this:

I forgot to mention that I'm running 0.4.1, unmodified.

Is there documentation somewhere of the path that a request follows
through the AppServer? I'd like to fix this bug (myself), but I'm not sure
really where to start tracing the life of the URI :)

-- 
   Fun-Loving * Tripp Lilley  *  http://stargate.eheart.sg505.net/~tlilley/
------------------------------------------------------------------------------
  "That's weak sh*t, from a weak mind, and a weak mind creates weak rhymes.
   You ain't never kicked knowledge one time."

  - Ice-T, "The Syndicate"

Doing:

 > cd WebKit
 > grep "def serverSidePath" *.py

provides a few good starting points. The concrete implementer of this has a 
hefty doc string.

However, since form fields in a GET are working for ordinary pages, but not 
PSP pages, and since all of this ultimately ties back to values passed in 
from the web server (via the adapter), I'm wondering if that's a good place 
to start the thought process:

What adapter are you using? Have you mapped *.psp in Apache or are you 
going through a WebKit specific URL?

I have no problem with this URL:
   http://127.0.0.1/WebKit.cgi/PSPExamples/PSPTests.psp?foo=bar

Note that HTTPRequest keeps the "raw request" it was given, which is a 
dictionary that includes the key "environ" from which it takes many things 
like the request path, the form fields, etc.

Maybe something like:

         print self.request().rawRequest()

in both a PSP and a subclass of Page (e.g, a basic servlet) would help.

-Chuck

At 05:32 AM 10/14/00 +0000, Tripp Lilley wrote:
>On Sat, 14 Oct 2000, Tripp Lilley wrote:
>
> > Invoking a plain old PSP page with parameters tacked onto the end of the
> > URL gives me this:
>
>I forgot to mention that I'm running 0.4.1, unmodified.
>
>Is there documentation somewhere of the path that a request follows
>through the AppServer? I'd like to fix this bug (myself), but I'm not sure
>really where to start tracing the life of the URI :)
>
>--
>    Fun-Loving * Tripp Lilley  *  http://stargate.eheart.sg505.net/~tlilley/
>------------------------------------------------------------------------------
>   "That's weak sh*t, from a weak mind, and a weak mind creates weak rhymes.
>    You ain't never kicked knowledge one time."
>
>   - Ice-T, "The Syndicate"
>
>
>_______________________________________________
>Webware-discuss mailing list
>Webware-discuss@...
>http://lists.sourceforge.net/mailman/listinfo/webware-discuss

On Sat, 14 Oct 2000, Chuck Esterbrook wrote:

> provides a few good starting points. The concrete implementer of this has a 
> hefty doc string.

Cool. Thanks for the starting point.

> What adapter are you using? Have you mapped *.psp in Apache or are you 
> going through a WebKit specific URL?

I'm using mod_python and modpHander::pspHandler. I've mapped *.psp, and
I'm not using a Location directive at all.

> I have no problem with this URL:
>    http://127.0.0.1/WebKit.cgi/PSPExamples/PSPTests.psp?foo=bar

Then you're right: the problem is somewhere in the mechanism between
mod_python, the AddHandler gizmo, and what pspHandler / etc. do with the
request when they have it.

> Note that HTTPRequest keeps the "raw request" it was given, which is a 
> dictionary that includes the key "environ" from which it takes many things 
> like the request path, the form fields, etc.

Cool. I'll look into this more once I get things delivered. For now, I've
done the exceptionally ugly workaround of not using the ? form at all. My
forms are all "POST", and my URLs are now all distinct (ie: no params
unless it's POSTed). Ewww. But I gotta deliver tonight, sooo :)

-- 
   Fun-Loving * Tripp Lilley  *  http://stargate.eheart.sg505.net/~tlilley/
------------------------------------------------------------------------------
  "That's weak sh*t, from a weak mind, and a weak mind creates weak rhymes.
   You ain't never kicked knowledge one time."

  - Ice-T, "The Syndicate"

OUCH.!

Thanks for catching this, Tripp.

I've commited a fix in CVS, but if you want to stick it in your local copy, here
it is.

This is a bug only for mod_python requests that are mapped to *.psp.

In HTTPRequest.py, line 327, in fsPath, add the if self._environ... line from the
snippet below.

def fsPath(self):
    """ The filesystem path of the request, using the webserver's docroot"""
    docroot = self._environ['DOCUMENT_ROOT']
    requri = self._environ['REQUEST_URI'][1:]#strip leading /
    if self._environ['QUERY_STRING']:
        qslength = len(self._environ['QUERY_STRING'])+1
        requri = requri[:-qslength] ##pull off the query string and the ?-mark
    fspath = os.path.join(docroot,requri)
    return fspath

Thanks for catching this, and let me know if you have any other problems.

Jay

Tripp Lilley wrote:

> Invoking a plain old PSP page with parameters tacked onto the end of the
> URL gives me this:
>
> BEGIN REQUEST
> Sat Oct 14 01:11:43 2000
> receiving request from <socket object, fd=7, family=2, type=1, protocol=0>
> received 1302 bytes
> request has keys: format, time, environ, input
> request uri = /foci/foci/view_petition.psp?count=0
> [Sat Oct 14 01:11:43 2000] [error] WebKit: Error while executing script
> None
> Traceback (innermost last):
>   File "Application.py", line 280, in dispatchRequest
>     self.handleGoodURL(transaction)
>   File "Application.py", line 371, in handleGoodURL
>     self.createServletInTransaction(transaction)
>   File "Application.py", line 690, in createServletInTransaction
>     cache = {
>   File "/var/tmp/python-root/usr/lib/python1.5/posixpath.py", line 140, in
> getmtime
>     st = os.stat(filename)
> OSError: [Errno 2] No such file or directory:
> '/home/httpd/html/foci/foci/view_petition.psp?count=0'
> connection closed.
> 0.04 secs
> END REQUEST
>
> Which suggests that the appserver is not properly splitting the fields out
> from the URL and parsing the filename...
>
> --
>    Fun-Loving * Tripp Lilley  *  http://stargate.eheart.sg505.net/~tlilley/
> ------------------------------------------------------------------------------
>   "That's weak sh*t, from a weak mind, and a weak mind creates weak rhymes.
>    You ain't never kicked knowledge one time."
>
>   - Ice-T, "The Syndicate"
>
> _______________________________________________
> Webware-discuss mailing list
> Webware-discuss@...
> http://lists.sourceforge.net/mailman/listinfo/webware-discuss

I received some feedback just now, which I have included below. The poster 
swears he will use the discussion list from now on.   :-)

>Date: Sat, 14 Oct 2000 02:47:44
>From: Tripp Lilley <tlilley@...>
>To: Chuck Esterbrook <echuck@...>
>Subject: doc bug
>
>
>         Webware/PSP/Documentation/UsersGuide.html
>
>mentions a page directive called "import", but the code implements this as
>"imports" (with a "s").
>
>Also, the docs might want to mention in BOLDFACE the equals sign. Reason
>for this is that Python programmers will naturally type:
>
>         <%@ page import "foo,bar" %>
>
>since that's similar to what they're familiar with. However, that will
>result in a barf by the server saying something about a missing tag value.
>To which poor developer (me) replies, "huh? what the heck is a tag?"
>
>The docs have the equals sign, which I found when I looked back at them,
>more carefully, but it wasn't obvious what I was missing from the error.

Webware for Python

Email Archive: webware-discuss (read-only)