[Quickfix-developers] exception thrown in python with twisted logging

[Robert P. <rob...@gm...>]

Hi folks,

I'm using the python binding from quickfix 1.12.4, and seeing a
possible bug in the python interface to the Application class. The
platform is CentOS 4.4 (equiv to RHEL 4, update 4).

Basically in C++, defining the method

FIX::MyApplication::onCreate(const FIX::SessionID& sessionID )
{
    cout << sessionID.toString() << endl;
}

works, and prints the session ID as a string when the session is
instantiated, but under python, the code:

class MyApplication(quickfix.Application):

    def onCreate(self, sessionID):  print "Session ID = " + sessionID

throws an exception when called: "terminate called after throwing an
instance of 'Swig::DirectorMethodException' ".  However, calling
sessionID.toString() here instead works.

In addition,
Is it possible that onCreate is being called before the session is
instantiated in the SWIG interface, or the ?

It should be very easy to reproduce the bug, since all that is needed
it to call


import quickfix
import time, sys
from twisted.python import log


class QuickFIXQuoteClient(quickfix.Application):
	
    def onCreate(self, sessionID):
        log.msg("QuickFIXQuoteClient: created. SessionID = " +
sessionID.toString())

def onLogon(self, sessionID): return
	def onLogout(self, sessionID): return

#	def toAdmin(self, message, sessionID): return
    def toAdmin(self, message, sessionID):
        log.msg("QuickFIXQuoteClient:toAdmin." )
        log.msg("    session ID = " +  sessionID.toString() )
        log.msg("    message = \n"+message.toXML())

	def toApp(self, message, sessionID):  return
	def fromAdmin(self, message, sessionID): return
	def fromApp(self, message, sessionID): return


fileName = "config.conf"

settings     = quickfix.SessionSettings(fileName)
application  = QuickFIXQuoteClient()
storeFactory = quickfix.FileStoreFactory(settings)
logFactory   = quickfix.FileLogFactory(settings)
initiator = quickfix.SocketInitiator(application, storeFactory,
settings, logFactory)

initiator.start()
while 1 == 1 :
    time.sleep(1)
    print "waiting..."

initiator.stop()

------------------------------------------------------

The following is a stacktrace from gdb python2.3

------------------------------------------------------
terminate called after throwing an instance of 'Swig::DirectorMethodException'

Program received signal SIGABRT, Aborted.
[Switching to Thread -1208904000 (LWP 2747)]
0x007e67a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb) bt
#0  0x007e67a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x008267a5 in raise () from /lib/tls/libc.so.6
#2  0x00828209 in abort () from /lib/tls/libc.so.6
#3  0x00b4a14b in __gnu_cxx::__verbose_terminate_handler () from
/usr/lib/libstdc++.so.6
#4  0x00b47e61 in __cxa_call_unexpected () from /usr/lib/libstdc++.so.6
#5  0x00b47e96 in std::terminate () from /usr/lib/libstdc++.so.6
#6  0x00b47eab in std::terminate () from /usr/lib/libstdc++.so.6
#7  0x00b47da3 in __cxa_call_unexpected () from /usr/lib/libstdc++.so.6
#8  0x0044178a in FIX::SessionFactory::create (this=0xbffcbb30,
sessionID=@0x9e02588, settings=@0x9e17974)
    at /usr/lib/gcc/i386-redhat-linux/3.4.6/../../../../include/c++/3.4.6/ext/new_allocator.h:69
#9  0x00456758 in FIX::Initiator::initialize (this=0x9e006c8) at
/usr/lib/gcc/i386-redhat-linux/3.4.6/../../../../include/c++/3.4.6/bits/stl_tree.h:246
#10 0x004575c5 in Initiator (this=0x9e006c8, application=@0x9e03af0,
messageStoreFactory=@0x9de00a0, settings=@0x9c7d5c8,
logFactory=@0x9dfbf38)
    at Initiator.cpp:60
#11 0x0045d4d1 in SocketInitiator (this=0x9e006c8,
application=@0x9e03af0, factory=@0x9de00a0, settings=@0x9c7d5c8,
logFactory=@0x9dfbf38)
    at SocketInitiator.cpp:49
#12 0x001d177d in _wrap_new_SocketInitiatorBase (self=0x0,
args=0xb78d384c) at QuickfixPython.cpp:150717
#13 0x0099a961 in PyCFunction_Call () from /usr/lib/libpython2.3.so.1.0
#14 0x00977637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0
#15 0x009cca88 in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so.1.0
#16 0x009cf196 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so.1.0
#17 0x0098ae6e in PyFunction_SetClosure () from /usr/lib/libpython2.3.so.1.0
#18 0x00977637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0
#19 0x0097edc8 in PyMethod_New () from /usr/lib/libpython2.3.so.1.0
#20 0x00977637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0
#21 0x009ccc6f in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so.1.0
#22 0x009cf196 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so.1.0
#23 0x0098ae6e in PyFunction_SetClosure () from /usr/lib/libpython2.3.so.1.0
#24 0x00977637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0
#25 0x0097edc8 in PyMethod_New () from /usr/lib/libpython2.3.so.1.0
#26 0x00977637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0
#27 0x009af93c in _PyObject_SlotCompare () from /usr/lib/libpython2.3.so.1.0
#28 0x009a8d1c in PyType_IsSubtype () from /usr/lib/libpython2.3.so.1.0
#29 0x00977637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0
#30 0x009ccc6f in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so.1.0
#31 0x009cf196 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so.1.0
#32 0x009cf45d in PyEval_EvalCode () from /usr/lib/libpython2.3.so.1.0
#33 0x009e8917 in PyErr_Display () from /usr/lib/libpython2.3.so.1.0
#34 0x009e9a42 in PyRun_SimpleFileExFlags () from /usr/lib/libpython2.3.so.1.0
#35 0x009eaa94 in PyRun_AnyFileExFlags () from /usr/lib/libpython2.3.so.1.0
#36 0x009ef78e in Py_Main () from /usr/lib/libpython2.3.so.1.0
#37 0x080485b2 in main ()