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<TITLE>omniORB.installTransientExceptionHandler -> python abort?</TITLE>
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<P><FONT SIZE=2 FACE="Arial">Hi,</FONT>
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<P><FONT SIZE=2 FACE="Arial">I am using omniORB 4.1.0 , omniORBpy 3.0, python 2.5 on rhel4.0 gcc 3.3 or solaris9.</FONT>
<BR><FONT SIZE=2 FACE="Arial">I experimented recently with the exception handler functions, with mixed results.</FONT>
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<P><FONT SIZE=2 FACE="Arial">def transientRetryFunction(cookie, retries, exc):</FONT>
<BR><FONT SIZE=2 FACE="Arial"> print "\nRetrying transient %s:%i\n" % (repr(exc),retries)</FONT>
<BR><FONT SIZE=2 FACE="Arial"> return False</FONT>
<BR><FONT SIZE=2 FACE="Arial">_cookie = "don’t care for now"</FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB.installTransientExceptionHandler(_cookie, transientRetryFunction)</FONT>
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<P><FONT SIZE=2 FACE="Arial">I expected the simple return False to allow the application to carry on as would be expected with no exception handler installed at all. Indeed, this is what I see for my more general SystemExceptionHandler.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">However when I encounter a LOCATION_FORWARD exception, the world ends. In the output below (with trace on 10 - 50 doesn't give much more use that I can tell), ServerObj is an (persistent) object reference pulled out of names, which I know is dead and can't be restarted.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">>>> ServerObj._narrow(ServerInterface)</FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB: AsyncInvoker: thread id = 2 has started. Total threads = 1</FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB: Creating ref to remote: key<....NUP...9........RootPOA.OnDemandRisk.MultiServer.453.1H.AdminPOA.........MultiSrvAdmin></FONT></P>
<P><FONT SIZE=2 FACE="Arial"> target id : IDL:omg.org/CORBA/Object:1.0</FONT>
<BR><FONT SIZE=2 FACE="Arial"> most derived id: </FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB: GIOP::LOCATION_FORWARD -- retry request.</FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB: Unable to open new connection: giop:tcp:elonxapodrp453:53305</FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB: throw giopStream::CommFailure from giopStream.cc:1148(0,NO,TRANSIENT_ConnectFailed)</FONT>
<BR><FONT SIZE=2 FACE="Arial">omniORB: Reverting object reference to original profile</FONT>
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<P><FONT SIZE=2 FACE="Arial">Retrying transient CORBA.TRANSIENT(omniORB.TRANSIENT_FailedOnForwarded, CORBA.COMPLETED_NO):0</FONT>
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<P><FONT SIZE=2 FACE="Arial">Abort</FONT>
</P>
<BR>
<P><FONT SIZE=2 FACE="Arial">And the python interpreter dies without a trace. The relevant section from the documentation is:</FONT>
<BR><FONT SIZE=2 FACE="Arial">When a TRANSIENT exception occurs, the function is called, passing the cookie object, a count of how many times the operation has been retried, and the TRANSIENT exception object itself. If the function returns true, the operation is retried; if it returns false, the original exception is raised in the application. In the case of a TRANSIENT exception due to a failed location forward, the exception propagated to the application is the original exception that caused the TRANSIENT (e.g. a COMM_FAILURE or OBJECT_NOT_EXIST), rather than the TRANSIENT exception.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Anyone have any ideas what I am doing wrong / if this functionality works as I am expecting / what further I can do to pin the problem down and fix it?</FONT></P>
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<P><FONT SIZE=2 FACE="Arial">Thanks,</FONT>
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<P><FONT SIZE=2 FACE="Arial">Richard</FONT>
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