[PEAK] Does a PEAK-ized webware esist ?

Ian Bicking ianb at colorstudy.com
Wed Jan 28 19:41:30 EST 2004

On Jan 28, 2004, at 6:08 PM, Phillip J. Eby wrote:
> At 06:49 PM 1/28/04 -0500, Phillip J. Eby wrote:
>> At 11:57 PM 1/28/04 +0100, gian paolo ciceri wrote:
>>> Hi all,
>>> is somewhere an attempt to provide a PEAK wrapper
>>> to webware (similar to the twisted one) ?
>> I have zero WebWare experience.  But if you can point me to the 
>> "twisted one" you refer to above, I might be able to offer a 
>> suggestion as to how to port it.
> Actually, I just found it.  It looks sort of like the closest thing to 
> doing that in PEAK would be to create an IRerunnableCGI adapter for 
> either an Application or an AppServer.
> I get the impression it would look something like:
> class AppAsRerunnableCGI(protocols.Adapter):
>     protocols.advise(
>         instancesProvide=[running.IRerunnableCGI],
>         asAdapterForTypes=[Application],
>     )
>     def runCGI(self,stdin,stdout,stderr,environ):
>         self.subject.dispatchRawRequest(
>             {
>                   "format": "CGI",
>                   "time": time.time(),
>                   "environ": environ,
>                   "input": stdin,       # XXX is this right?
>             },
>             stdout
>         )
> The main parts I'm not sure about here are the input=stdin part and 
> the directly passing 'stdout'.  Someone more familiar with Webware 
> will hopefully pipe up on these aspects.

Yep, that's pretty much what it comes down to.  In Webware the output 
stream, though, is generally of type WebKit.ASStreamOut.ASStreamOut 
(ack... that name shouldn't have slipped in there).  It has some extra 
functions which control buffering.  Unfortunately, there's no good 
minimal wrapper, but WebKit.ThreadedAppServer.TASASStreamOut (double 
ack) could be easily modified to write to a file instead of a socket.

Also, Webware has a lot of prints in it, so if you are actually 
outputing a response to stdout, you should do a sys.stdout = stderr 
before running Webware.  This is unfortunate as well, though not a big 
deal if you are running Webware in its own process.

Application also requires a server (typically AppServer), which has a 
few methods you'd need to implement, though they are very minimal.

Ian Bicking | ianb at colorstudy.com | http://blog.ianbicking.org

More information about the PEAK mailing list