[ome-devel] Python SessionTimeoutException

[Niko Ehrenfeuchter]

Probably I should mention that I've read the forum post from 2010 about 
"Connection and Session timeouts" [1], but unfortunately this did not 
make me any smarter :-/

~Niko

[1] https://www.openmicroscopy.org/community/viewtopic.php?f=6&t=320

On 04.03.2016 15:54, Niko Ehrenfeuchter wrote:
> Dear all,
>
> we're constantly experiencing session timeouts in one of our Python
> scripts (see the traceback below). I was very surprised to see the TTL
> is reported as 60000 ms in the error trace, so I went and checked if
> something is wrong with "omero.sessions.timeout". As this setting had
> not been configured explicitly before, I did so by running
>
>> bin/omero config set omero.sessions.timeout 600000
>> bin/omero admin restart
>
> but the timeout persists. So apparently this is not about
> "omero.sessions.timeout"...?
>
> Am I doing something wrong? Please note that this is on 5.1.2!
>
> Cheers
> Niko
>
>> Traceback (most recent call last):
>>   File "/home/omeronas/misc/test.py", line 518, in <module>
>>     sys.exit(main())
>>   File "/home/omeronas/misc/test.py", line 514, in main
>>     generate_tree(user)
>>   File "/home/omeronas/misc/test.py", line 435, in get_orignames
>>     for image in dset.listChildren():
>>   File
>> "/home/omeronas/OMERO.server/lib/python/omero/gateway/__init__.py",
>> line 687, in listChildren
>>     for child in self._listChildren(ns=ns, val=val, params=params):
>>   File
>> "/home/omeronas/OMERO.server/lib/python/omero/gateway/__init__.py",
>> line 676, in _listChildren
>>     ).findAllByQuery(query, params, self._conn.SERVICE_OPTS)):
>>   File
>> "/home/omeronas/OMERO.server/lib/python/omero/gateway/__init__.py",
>> line 4126, in __call__
>>     return self.handle_exception(e, *args, **kwargs)
>>   File
>> "/home/omeronas/OMERO.server/lib/python/omero/gateway/__init__.py",
>> line 4123, in __call__
>>     return self.f(*args, **kwargs)
>>   File
>> "/home/omeronas/OMERO.server/lib/python/omero_api_IQuery_ice.py", line
>> 213, in findAllByQuery
>>     return _M_omero.api.IQuery._op_findAllByQuery.invoke(self,
>> ((query, params), _ctx))
>> omero.SessionTimeoutException: exception ::omero::SessionTimeoutException
>> {
>>     serverStackTrace = ome.conditions.SessionTimeoutException: Session
>> (started=2016-03-04 15:24:57.51, hits=1888, last access=2016-03-04
>> 15:25:05.955) exceeded timeToLive (60000) by 653 ms
>>         at
>> ome.services.sessions.state.SessionCache.getDataNullOrThrowOnTimeout(SessionCache.java:465)
>>
>>         at
>> ome.services.sessions.state.SessionCache.getSessionContext(SessionCache.java:371)
>>
>>         at
>> ome.services.sessions.state.SessionCache.getSessionContext(SessionCache.java:356)
>>
>>         at
>> ome.services.sessions.SessionManagerImpl.getUserRoles(SessionManagerImpl.java:652)
>>
>>         at
>> ome.security.basic.BasicMethodSecurity.checkMethod(BasicMethodSecurity.java:112)
>>
>>         at
>> ome.security.basic.BasicSecurityWiring.invoke(BasicSecurityWiring.java:81)
>>
>>         at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>>
>>         at
>> ome.services.blitz.fire.AopContextInitializer.invoke(AopContextInitializer.java:43)
>>
>>         at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>>
>>         at
>> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>>
>>         at $Proxy80.findAllByQuery(Unknown Source)
>>         at sun.reflect.GeneratedMethodAccessor675.invoke(Unknown Source)
>>         at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>
>>         at java.lang.reflect.Method.invoke(Method.java:601)
>>         at
>> ome.services.blitz.util.IceMethodInvoker.invoke(IceMethodInvoker.java:179)
>>
>>         at ome.services.throttling.Callback.run(Callback.java:56)
>>         at
>> ome.services.throttling.InThreadThrottlingStrategy.callInvokerOnRawArgs(InThreadThrottlingStrategy.java:56)
>>
>>         at
>> ome.services.blitz.impl.AbstractAmdServant.callInvokerOnRawArgs(AbstractAmdServant.java:149)
>>
>>         at
>> ome.services.blitz.impl.QueryI.findAllByQuery_async(QueryI.java:66)
>>         at sun.reflect.GeneratedMethodAccessor674.invoke(Unknown Source)
>>         at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>
>>         at java.lang.reflect.Method.invoke(Method.java:601)
>>         at
>> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
>>
>>         at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
>>
>>         at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
>>
>>         at omero.cmd.CallContext.invoke(CallContext.java:78)
>>         at
>> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>>
>>         at
>> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>>
>>         at $Proxy81.findAllByQuery_async(Unknown Source)
>>         at omero.api._IQueryTie.findAllByQuery_async(_IQueryTie.java:90)
>>         at omero.api._IQueryDisp.___findAllByQuery(_IQueryDisp.java:341)
>>         at omero.api._IQueryDisp.__dispatch(_IQueryDisp.java:464)
>>         at IceInternal.Incoming.invoke(Incoming.java:222)
>>         at Ice.ConnectionI.invokeAll(ConnectionI.java:2482)
>>         at Ice.ConnectionI.dispatch(ConnectionI.java:1258)
>>         at Ice.ConnectionI.message(ConnectionI.java:1213)
>>         at IceInternal.ThreadPool.run(ThreadPool.java:321)
>>         at IceInternal.ThreadPool.access$300(ThreadPool.java:12)
>>         at
>> IceInternal.ThreadPool$EventHandlerThread.run(ThreadPool.java:693)
>>         at java.lang.Thread.run(Thread.java:722)
>>
>>     serverExceptionClass = ome.conditions.SessionTimeoutException
>>     message = Session (started=2016-03-04 15:24:57.51, hits=1888, last
>> access=2016-03-04 15:25:05.955) exceeded timeToLive (60000) by 653 ms
>> }
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-- 
Niko Ehrenfeuchter | Image Analysis Specialist | Biozentrum, University 
of Basel | Klingelbergstr. 50/70 | CH-4056 Basel
Phone: +41 (61) 26 72673 | nikolaus.ehrenfeuchter at unibas.ch | 
www.biozentrum.unibas.ch | www.microscopynetwork.unibas.ch