[Twisted-Python] Twisted on Jython

2013-03-08 Thread Tobias Oberstein 
Hi,

we've been asked if Autobahn runs under Jython. Since there is an upcoming 
Jython version that supports 2.7 Python API, I thought I'd give it a try.

To my astonishment, I was able to get Autobahn working with minor efforts ...

Tested: Twisted 12.3 under Jython from sources (together with zope.interface 
4.05 and setuptools from sources) after applying the following patches. Stock 
AutobahnPython 0.6 from source.

1) Missing __builtin__.buffer

The following is a workaround due to http://bugs.jython.org/issue1521

Include

# workaround for Jython, see: http://bugs.jython.org/issue1521
import __builtin__
if not hasattr(__builtin__, 'buffer'):
def _buffer(object, offset = None, size = None):
   if offset is None:
  offset = 0
   if size is None:
  size = len(object)
   return object[offset:offset+size]
__builtin__.buffer = _buffer

at the beginning of "twisted/python/compat.py".

2) Weird platform ident

Jython identifies itself as "Java" .. I was testing on Windows.

twisted/python/runtime.py

Line 36

#'java': 'java',
'java': 'win32',

This is necessary on Windows since otherwise Posix API is assumed.

Of course above is just a quick hack.

C:\Users\oberstet>jython
Jython 2.7b1 (default:ac42d59644e9, Feb 9 2013, 15:24:52)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys, os
>>> sys.platform
'java1.7.0'
>>> os.name
'java'

IMHO, os.name should return the real underlying OS on Jython, not "java" .. 
what do you think?

===

Where should those issue be adressed? Should Twisted include workarounds or 
should I lobby at Jython to "do the right" thing?

Cheers,
Tobias


Mit freundlichen Grüßen,

Tobias Oberstein
Geschäftsführer

+49(0)9131 940 3574
+49(0)176 23 752 055
tobias.oberst...@tavendo.de
Skype: toberstein
Twitter: @oberstet
Xing: Tobias Oberstein

[cid:image003.png@01CE1BF7.08C826D0]

Tavendo GmbH · Am Weihersbach 13 · 91074 Herzogenaurach · Deutschland
Office / Postanschrift : Waldstrasse 18 · 91054 Erlangen · Deutschland
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Re: [Twisted-Python] Twisted on Jython

2013-03-08 Thread Tobias Oberstein 
it seems that a way to identify the actual OS on which Jython is running can be 
determined using

Jython 2.7b1 (default:ac42d59644e9, Feb 9 2013, 15:24:52)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0
Type "help", "copyright", "credits" or "license" for more information.
>>> import java.lang.System
>>> java.lang.System.getProperty('os.name')
u'Windows 7'
>>>




Mit freundlichen Grüßen,

Tobias Oberstein
Geschäftsführer

+49(0)9131 940 3574
+49(0)176 23 752 055
tobias.oberst...@tavendo.de
Skype: toberstein
Twitter: @oberstet
Xing: Tobias Oberstein

[cid:image001.png@01CE1C06.BD7E36F0]

Tavendo GmbH · Am Weihersbach 13 · 91074 Herzogenaurach · Deutschland
Office / Postanschrift : Waldstrasse 18 · 91054 Erlangen · Deutschland
+49(+)700 GO TAVENDO · +49(0)700 46 828 36 36 · 
www.tavendo.de
Amtsgericht Fürth · HRB 10365 · USt-Id.Nr DE246462916 · Geschäftsführer Tobias 
Oberstein

Von: twisted-python-boun...@twistedmatrix.com 
[mailto:twisted-python-boun...@twistedmatrix.com] Im Auftrag von Tobias 
Oberstein
Gesendet: Freitag, 8. März 2013 12:18
An: Twisted general discussion (twisted-python@twistedmatrix.com)
Betreff: [Twisted-Python] Twisted on Jython

Hi,

we've been asked if Autobahn runs under Jython. Since there is an upcoming 
Jython version that supports 2.7 Python API, I thought I'd give it a try.

To my astonishment, I was able to get Autobahn working with minor efforts ...

Tested: Twisted 12.3 under Jython from sources (together with zope.interface 
4.05 and setuptools from sources) after applying the following patches. Stock 
AutobahnPython 0.6 from source.

1) Missing __builtin__.buffer

The following is a workaround due to http://bugs.jython.org/issue1521

Include

# workaround for Jython, see: http://bugs.jython.org/issue1521
import __builtin__
if not hasattr(__builtin__, 'buffer'):
def _buffer(object, offset = None, size = None):
   if offset is None:
  offset = 0
   if size is None:
  size = len(object)
   return object[offset:offset+size]
__builtin__.buffer = _buffer

at the beginning of "twisted/python/compat.py".

2) Weird platform ident

Jython identifies itself as "Java" .. I was testing on Windows.

twisted/python/runtime.py

Line 36

#'java': 'java',
'java': 'win32',

This is necessary on Windows since otherwise Posix API is assumed.

Of course above is just a quick hack.

C:\Users\oberstet>jython
Jython 2.7b1 (default:ac42d59644e9, Feb 9 2013, 15:24:52)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys, os
>>> sys.platform
'java1.7.0'
>>> os.name
'java'

IMHO, os.name should return the real underlying OS on Jython, not "java" .. 
what do you think?

===

Where should those issue be adressed? Should Twisted include workarounds or 
should I lobby at Jython to "do the right" thing?

Cheers,
Tobias


Mit freundlichen Grüßen,

Tobias Oberstein
Geschäftsführer

+49(0)9131 940 3574
+49(0)176 23 752 055
tobias.oberst...@tavendo.de
Skype: toberstein
Twitter: @oberstet
Xing: Tobias Oberstein

[cid:image002.png@01CE1C06.BD7E36F0]

Tavendo GmbH · Am Weihersbach 13 · 91074 Herzogenaurach · Deutschland
Office / Postanschrift : Waldstrasse 18 · 91054 Erlangen · Deutschland
+49(+)700 GO TAVENDO · +49(0)700 46 828 36 36 · 
www.tavendo.de
Amtsgericht Fürth · HRB 10365 · USt-Id.Nr DE246462916 · Geschäftsführer Tobias 
Oberstein

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Re: [Twisted-Python] Twisted on Jython

2013-03-08 Thread exarkun 
On 11:18 am, tobias.oberst...@tavendo.de wrote:
>Hi,
>
>we've been asked if Autobahn runs under Jython. Since there is an 
>upcoming Jython version that supports 2.7 Python API, I thought I'd 
>give it a try.
>
>To my astonishment, I was able to get Autobahn working with minor 
>efforts ...

That's very cool.  Can you file tickets in the issue tracker and attach 
patches there?  The mailing list is where diffs go to be forgotten.

Here's a start: http://twistedmatrix.com/trac/ticket/3413

Jean-Paul
>Tested: Twisted 12.3 under Jython from sources (together with 
>zope.interface 4.05 and setuptools from sources) after applying the 
>following patches. Stock AutobahnPython 0.6 from source.
>
>1) Missing __builtin__.buffer
>
>The following is a workaround due to http://bugs.jython.org/issue1521
>
>Include
>
># workaround for Jython, see: http://bugs.jython.org/issue1521
>import __builtin__
>if not hasattr(__builtin__, 'buffer'):
>def _buffer(object, offset = None, size = None):
>   if offset is None:
>  offset = 0
>   if size is None:
>  size = len(object)
>   return object[offset:offset+size]
>__builtin__.buffer = _buffer
>
>at the beginning of "twisted/python/compat.py".
>
>2) Weird platform ident
>
>Jython identifies itself as "Java" .. I was testing on Windows.
>
>twisted/python/runtime.py
>
>Line 36
>
>#'java': 'java',
>'java': 'win32',
>
>This is necessary on Windows since otherwise Posix API is assumed.
>
>Of course above is just a quick hack.
>
>C:\Users\oberstet>jython
>Jython 2.7b1 (default:ac42d59644e9, Feb 9 2013, 15:24:52)
>[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0
>Type "help", "copyright", "credits" or "license" for more information.
import sys, os
sys.platform
>'java1.7.0'
os.name
>'java'
>
>IMHO, os.name should return the real underlying OS on Jython, not 
>"java" .. what do you think?
>
>===
>
>Where should those issue be adressed? Should Twisted include 
>workarounds or should I lobby at Jython to "do the right" thing?
>
>Cheers,
>Tobias
>
>
>Mit freundlichen Grüßen,
>
>Tobias Oberstein
>Geschäftsführer
>
>+49(0)9131 940 3574
>+49(0)176 23 752 055
>tobias.oberst...@tavendo.de
>Skype: toberstein
>Twitter: @oberstet
>Xing: Tobias Oberstein
>
>[cid:image003.png@01CE1BF7.08C826D0]
>
>Tavendo GmbH · Am Weihersbach 13 · 91074 Herzogenaurach · Deutschland
>Office / Postanschrift : Waldstrasse 18 · 91054 Erlangen · Deutschland
>+49(+)700 GO TAVENDO · +49(0)700 46 828 36 36 · 
>www.tavendo.de
>Amtsgericht Fürth · HRB 10365 · USt-Id.Nr DE246462916 · Geschäftsführer 
>Tobias Oberstein

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Re: [Twisted-Python] Twisted on Jython

2013-03-08 Thread Tobias Oberstein 
> >To my astonishment, I was able to get Autobahn working with minor
> >efforts ...
> 
> That's very cool.  Can you file tickets in the issue tracker and attach 
> patches
> there?  The mailing list is where diffs go to be forgotten.
> 
> Here's a start: http://twistedmatrix.com/trac/ticket/3413

Hi Jean-Paul,

done: http://twistedmatrix.com/trac/ticket/3413#comment:21

- Tobias

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Re: [Twisted-Python] Twisted on Jython

2013-03-08 Thread Glyph 

On Mar 8, 2013, at 11:47 AM, Tobias Oberstein  
wrote:

>>> To my astonishment, I was able to get Autobahn working with minor
>>> efforts ...
>> 
>> That's very cool.  Can you file tickets in the issue tracker and attach 
>> patches
>> there?  The mailing list is where diffs go to be forgotten.
>> 
>> Here's a start: http://twistedmatrix.com/trac/ticket/3413
> 
> Hi Jean-Paul,
> 
> done: http://twistedmatrix.com/trac/ticket/3413#comment:21

Tobias,

Note that the primary missing criterion from this ticket is the presence of a 
buildbot running Jython.  Any chance you'd want to contribute another bot for 
this purpose?

Thanks!

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Re: [Twisted-Python] Twisted on Jython

2013-03-08 Thread exarkun 
On 07:47 pm, tobias.oberst...@tavendo.de wrote:
>> >To my astonishment, I was able to get Autobahn working with minor
>> >efforts ...
>>
>>That's very cool.  Can you file tickets in the issue tracker and 
>>attach patches
>>there?  The mailing list is where diffs go to be forgotten.
>>
>>Here's a start: http://twistedmatrix.com/trac/ticket/3413
>
>Hi Jean-Paul,
>
>done: http://twistedmatrix.com/trac/ticket/3413#comment:21

Thanks!  Now feel free to harass people however you like in order to get 
them to pay attention to that issue. :)

I suspect one early task will be to get a Jython builder set up on 
http://buildbot.twistedmatrix.com/ again.

Jean-Paul

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