Issue1220

Spiro is an open source tool that can be used to talk between cpython
and jython. (Available here: http://www.freenet.org.nz/python/spiro/)

It works in Jython 2.1, but fails when running as a server in Jython2.5b0

with

It works with Python 2.5 so I figure that it should work with Jython 2.5.
 (Seems to be a pickling issue)

spiro-0.1.0>jython spiroserver.py
2009-01-07 17:43:04 spiroserver.py:120:run():
* Listening for client requests on 127.0.0.1:9091

2009-01-07 17:44:49 spiroserver.py:188:handle():
* Got req from (u'127.0.0.1', 4781)

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': 'do', 'cacheId': None, 'kw': {}, 'args': (0,), 'cmdId': 0,
'cmd': 'ge
t'}

2009-01-07 17:44:49 spiroserver.py:324:executeRequest():
* get: seeking root attrib do

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': None, 'cacheId': 0, 'type':
'reply', 'cm
dId': 0}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': None, 'cacheId': 0, 'kw': {}, 'args': ('import java',),
'cmdId': 1, '
cmd': 'call'}

2009-01-07 17:44:49 spiroserver.py:370:executeRequest():
* about to call object '<bound method SpiroSession.do of
<__main__.SpiroSession
instance at 11>>' with args=('import java',) kw={}

2009-01-07 17:44:49 spiroserver.py:451:do():
* Executing 'import java'

2009-01-07 17:44:49 spiroserver.py:380:executeRequest():
* back from call, allocated cacheId 1

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': 'N.', 'cacheId': 1, 'type':
'reply', 'cm
dId': 1}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': None, 'cacheId': 1, 'kw': {}, 'args': (), 'cmdId': -1, 'cmd':
'goodby
e'}

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': 'java', 'cacheId': None, 'kw': {}, 'args': (0,), 'cmdId': 2,
'cmd': '
get'}

2009-01-07 17:44:49 spiroserver.py:324:executeRequest():
* get: seeking root attrib java

2009-01-07 17:44:49 spiroserver.py:329:executeRequest():
* get: about to eval 'java'

2009-01-07 17:44:49 spiroserver.py:332:executeRequest():
* get: got <java package java 19>

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': None, 'cacheId': 2, 'type':
'reply', 'cm
dId': 2}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': 'lang', 'cacheId': 2, 'kw': {}, 'args': (0,), 'cmdId': 3,
'cmd': 'get
'}

2009-01-07 17:44:49 spiroserver.py:276:executeRequest():
* found item 2 in cache, fetching attrib lang

2009-01-07 17:44:49 spiroserver.py:293:executeRequest():
* about to reply

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': None, 'cacheId': 3, 'type':
'reply', 'cm
dId': 3}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': 'Math', 'cacheId': 3, 'kw': {}, 'args': (0,), 'cmdId': 4,
'cmd': 'get
'}

2009-01-07 17:44:49 spiroserver.py:276:executeRequest():
* found item 3 in cache, fetching attrib Math

2009-01-07 17:44:49 spiroserver.py:293:executeRequest():
* about to reply

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': None, 'cacheId': 4, 'type':
'reply', 'cm
dId': 4}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': 'sqrt', 'cacheId': 4, 'kw': {}, 'args': (0,), 'cmdId': 5,
'cmd': 'get
'}

2009-01-07 17:44:49 spiroserver.py:276:executeRequest():
* found item 4 in cache, fetching attrib sqrt

2009-01-07 17:44:49 spiroserver.py:293:executeRequest():
* about to reply

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': None, 'cacheId': 5, 'type':
'reply', 'cm
dId': 5}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': '__str__', 'cacheId': 5, 'kw': {}, 'args': (0,), 'cmdId': 6,
'cmd': '
get'}

2009-01-07 17:44:49 spiroserver.py:276:executeRequest():
* found item 5 in cache, fetching attrib __str__

2009-01-07 17:44:49 spiroserver.py:293:executeRequest():
* about to reply

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': None, 'cacheId': 6, 'type':
'reply', 'cm
dId': 6}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': None, 'cacheId': 6, 'kw': {}, 'args': (), 'cmdId': 7, 'cmd':
'call'}

2009-01-07 17:44:49 spiroserver.py:370:executeRequest():
* about to call object '<function _thefunc at 47>' with args=() kw={}

2009-01-07 17:44:49 spiroserver.py:380:executeRequest():
* back from call, allocated cacheId 7

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': "S'<java function sqrt
40>'\np0\n.", 'ca
cheId': 7, 'type': 'reply', 'cmdId': 7}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': None, 'cacheId': 7, 'kw': {}, 'args': (), 'cmdId': -1, 'cmd':
'goodby
e'}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': None, 'cacheId': 5, 'kw': {}, 'args': (16,), 'cmdId': 8,
'cmd': 'call
'}

2009-01-07 17:44:49 spiroserver.py:370:executeRequest():
* about to call object '<java function sqrt 40>' with args=(16,) kw={}

2009-01-07 17:44:49 spiroserver.py:380:executeRequest():
* back from call, allocated cacheId 8

2009-01-07 17:44:49 spiroserver.py:555:sendReply():
* sending reply {'status': 'ok', 'val': 'F4.0\n.', 'cacheId': 8, 'type':
'reply'
, 'cmdId': 8}

2009-01-07 17:44:49 spiroserver.py:607:__init__():
* creating SpiroUnpickler

2009-01-07 17:44:49 spiroserver.py:249:executeRequest():
* {'attr': None, 'cacheId': 8, 'kw': {}, 'args': (), 'cmdId': -1, 'cmd':
'goodby
e'}

2009-01-07 17:44:49 spiroserver.py:224:getRequest():
* Traceback (most recent call last):
   +   File "spiroserver.py", line 222, in getRequest
   +     size = int(self.rfile.readline().strip())
   +   File "C:\DEV\jython2.5b0\Lib\socket.py", line 1276, in readline
   +     data = self._sock.recv(self._rbufsize)
   +   File "C:\DEV\jython2.5b0\Lib\socket.py", line 817, in recv
   +     raise _map_exception(jlx)
   + error: (104, 'Software caused connection abort')
   +
   + Failed to read size header, killing client

2009-01-07 17:44:49 spiroserver.py:194:handle():
* Traceback (most recent call last):
   +   File "spiroserver.py", line 192, in handle
   +     req = self.getRequest()
   +   File "spiroserver.py", line 225, in getRequest
   +     thread.exit()
   + SystemExit: 0
   +
   + Failed to get request

2009-01-07 17:44:49 spiroserver.py:130:finish_request():
* Client session terminated

I remember when Spiro was created, mainly because jython could not run
pyro at that time.

But spiro has not been maintained for almost 5 years, and never got past
0.10 alpha stage.

Whereas Pyro has made strides, and there have been successful reports of
running server-side pyro on jython, now that we have a select module.

http://www.razorvine.net/python/PyroAndJython

I highly recommed giving pyro another try.

The issue is that this works with Python 2.5 but not with Jython 2.5.
Has it been resolved why? Isn't this a bug in Jython 2.5? (Regardless of
whether Spiro is a recommended tool for distributed programming)

If you can provide a snippet of code that illustrates a bug, the bug
will be fixed.

I don't think any of the jython development team have the time to spend
debugging an alpha piece of software that the original author abandoned
five years ago.

That makes sense. I'm curious as to why it works with previous versions
of Jython and previous and current versions of Python but not Jython
2.5. I'll take a look over the weekend and see if I can find something
useful. (It may turn out to be a known "issue" that's reported in Pyro /
Jython usage.)