[Zope-PAS] Re: plonePAS and JAX-WS

[Zachery Bir]

On Aug 25, 2006, at 10:17 AM, Tres Seaver wrote:

> Zachery Bir wrote:
>> On Aug 25, 2006, at 5:40 AM, Jens Vagelpohl wrote:
>>
>>> On 25 Aug 2006, at 05:47, Serge Zagorac wrote:
>>>
>>>> Hi All
>>>>
>>>> Is there any way or example how to  configure plonePAS to  
>>>> consume a web
>>>> service  (in my case JAX-WS via SOAP ) in order to get user  
>>>> details?
>>>
>>> This won't be a configuration issue, it will be a coding issue. You
>>> don't mention specifically what "consume a web service" means,  
>>> but you
>>> might be able to put together a Scriptable Multiplugin or write your
>>> own filesystem-based plugin to do the job.
>>>
>>> However, there is one big caveat. Making HTTP calls (or almost any
>>> other network request) out of Zope code during the execution of a  
>>> web
>>> request is risky. The executing thread will wait until the external
>>> request has been answered, and if for whatever reason no answer is
>>> received it will hang forever. There are four threads available in a
>>> normal Zope configuration, the fourth time this happens your website
>>> will be unavailable and Zope must be restarted. A lot of care  
>>> needs to
>>> be taken to ensure there are sensible timeouts on these external  
>>> calls
>>> to prevent hangs.
>>
>> You can get around it, though, if you use something like Zasync. A  
>> bit
>> heavy-handed, but it's there for ya. :^)
>
> You can't authenticate asynchronously -- the original request is  
> stalled
> untill the out-of-process call returns, and there is no way to release
> the thread / connection pool it is using.

Well, fine. Bring you "reality" into it. ;^)

Zac