Bitten by the CometServlet
Eckart Hertzler
I was trying get the latest comet changes to work with my version of "yet another simple comet chat example".
However the first call to a restful actor results in this:
FAT [20100104-18:18:26.099] application: java.lang.ClassCastException: se.scalablesolutions.akka.comet.AkkaServlet$$anon$1$$anon$2 cannot be cast to org.atmosphere.handler.ReflectorServletProcessor
FAT [20100104-18:18:26.099] application: at org.atmosphere.jersey.AtmosphereFilter$Filter.filter(AtmosphereFilter.java:231)
FAT [20100104-18:18:26.099] application: at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1008)
FAT [20100104-18:18:26.099] application: at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
FAT [20100104-18:18:26.099] application: at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
FAT [20100104-18:18:26.099] application: at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384)
FAT [20100104-18:18:26.099] application: at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451)
FAT [20100104-18:18:26.099] application: at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632)
--> FAT [20100104-18:18:26.099] application: at se.scalablesolutions.akka.comet.AkkaServlet$$anon$1$$anon$2.onRequest(AkkaServlet.scala:34)
FAT [20100104-18:18:26.099] application: at se.scalablesolutions.akka.comet.AkkaServlet$$anon$1.onRequest(AkkaServlet.scala:44)
FAT [20100104-18:18:26.099] application: at org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:144)
FAT [20100104-18:18:26.099] application: at org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:117)
FAT [20100104-18:18:26.099] application: at org.atmosphere.container.JettyCometSupport.service(JettyCometSupport.java:79)
The problem seems to be this piece of code in se.scalablesolutions.akka.comet.AkkaServlet:
-----------------------------------------------------------------------------------
private val handler = new AbstractReflectorAtmosphereHandler {
override def onRequest(event: AtmosphereResource[HttpServletRequest, HttpServletResponse]) {
if (event ne null) {
event.getRequest.setAttribute(ReflectorServletProcessor.ATMOSPHERE_RESOURCE, event)
event.getRequest.setAttribute(ReflectorServletProcessor.ATMOSPHERE_HANDLER, this)
service(event.getRequest, event.getResponse)
}
}
}
-----------------------------------------------------------------------------------
The problem goes away if I replace AbstractReflectorAtmosphereHandler with ReflectorServletProcessor,
which seems to be ok after reading the athmosphere docs.
But is it?
Viktor, can you shed some light on this?
Thanks,
Eckart
Jeanfrancois Arcand
I've fixed that issue this morning and now you no longer needs to change
anything (it should just works). Just download the latest Atmosphere
SNAPSHOT jars.
Note that for Akka 0.6 I can cut a special version of Atmosphere so we
don't rely on snapshot (same for Jersey).
A+
-- Jeanfrancois
>
> Viktor, can you shed some light on this?
>
> Thanks,
>
> Eckart
>
>
>
>
>
>
>
>
>
>
>
> --
>
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>
>
Jonas Bonér
tonight. Had planned to remove Comet for this release.
If you could cut a special release it would be great. Please do it
ASAP if you can. You can email me or Viktor directly.
Thanks again.
----
Jonas Bonér
twitter: @jboner
blog: http://jonasboner.com
work: http://scalablesolutions.se
code: http://github.com/jboner
code: http://akkasource.org
also: http://letitcrash.com
On Jan 4, 2010, at 18:50, Jeanfrancois Arcand <jfarca...@gmail.com>
wrote:
Viktor Klang
I'm resuming my chase for the bug as well. Thanks for cutting the new version out, I'm praying that I'll alleviate the bug, but the 404:s may persist.
Any clues?
| "A complex system that works is invariably
| found to have evolved from a simple system
| that worked." - John Gall
Blog: klangism.blogspot.com
Twttr: twitter.com/viktorklang
Code: github.com/viktorklang
Viktor Klang
Only the very first Atmosphere request works (@Suspend or @Broadcast) but all others after it gets a 404 :/
All other Jersey services work flawlessly though :(
Eckart Hertzler
> Salut,
>
> >
> > [snip]
> > But is it?
>
> I've fixed that issue this morning and now you no longer needs to change
> anything (it should just works). Just download the latest Atmosphere
> SNAPSHOT jars.
>
And I did just work.
Thank you for the fast response (and even faster fix),
Eckart
Viktor Klang
Am Montag, 4. Januar 2010 18:50:33 schrieb Jeanfrancois Arcand:
> Salut,
>
> >
> > [snip]
> > But is it?And I did just work.
>
> I've fixed that issue this morning and now you no longer needs to change
> anything (it should just works). Just download the latest Atmosphere
> SNAPSHOT jars.
>
Thank you for the fast response (and even faster fix),
Eckart, does your Comet sample work now?
Are you running Akka as kernel or in a container?
Eckart
> Note that for Akka 0.6 I can cut a special version of Atmosphere so we
> don't rely on snapshot (same for Jersey).
>
> A+
>
> -- Jeanfrancois
>
> >
> > Viktor, can you shed some light on this?
> >
> > Thanks,
> >
> > Eckart
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --
> >
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> >
> >
> >
>
> --
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Eckart Hertzler
> On Mon, Jan 4, 2010 at 8:28 PM, Eckart Hertzler <eck...@hertzler.de> wrote:
>
> > Am Montag, 4. Januar 2010 18:50:33 schrieb Jeanfrancois Arcand:
> > > Salut,
> > >
> > > >
> > > > [snip]
> > > > But is it?
> > >
> > > I've fixed that issue this morning and now you no longer needs to change
> > > anything (it should just works). Just download the latest Atmosphere
> > > SNAPSHOT jars.
> > >
> >
> > And I did just work.
> >
> > Thank you for the fast response (and even faster fix),
> >
>
> Eckart, does your Comet sample work now?
well, now the exception is not thrown but the suspended get is not resumed either.
... and the list of messages is strangely serialized into JSON by se.scalablesolutions.akka.serialization.Serializer like this:
------------- mvn scala:console output ------------------
scala> new String(Serializer.ScalaJSON.out(List("2","3")))
new String(Serializer.ScalaJSON.out(List("2","3")))
res1: java.lang.String =
��w
["2", "3"]
---------------------------------------------------------
> Are you running Akka as kernel or in a container?
>
embedded in a jetty
> >
> > Eckart
> >
> > > Note that for Akka 0.6 I can cut a special version of Atmosphere so we
> > > don't rely on snapshot (same for Jersey).
> > >
> > > A+
> > >
> > > -- Jeanfrancois
> > >
> > > >
> > > > Viktor, can you shed some light on this?
> > > >
> > > > Thanks,
> > > >
> > > > Eckart
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > >
> > > > You received this message because you are subscribed to the Google
> > Groups "Akka User List" group.
> > > > To post to this group, send email to akka...@googlegroups.com.
> > > > To unsubscribe from this group, send email to
> > akka-user+...@googlegroups.com<akka-user%2Bunsu...@googlegroups.com>
> > .
> > > > For more options, visit this group at
> > http://groups.google.com/group/akka-user?hl=en.
> > > >
> > > >
> > > >
> > >
> > > --
> > >
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> > .
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> > >
> > >
> > >
> >
> > --
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Viktor Klang
Am Montag, 4. Januar 2010 20:34:41 schrieb Viktor Klang:
> On Mon, Jan 4, 2010 at 8:28 PM, Eckart Hertzler <eck...@hertzler.de> wrote:well, now the exception is not thrown but the suspended get is not resumed either.
>
> > Am Montag, 4. Januar 2010 18:50:33 schrieb Jeanfrancois Arcand:
> > > Salut,
> > >
> > > >
> > > > [snip]
> > > > But is it?
> > >
> > > I've fixed that issue this morning and now you no longer needs to change
> > > anything (it should just works). Just download the latest Atmosphere
> > > SNAPSHOT jars.
> > >
> >
> > And I did just work.
> >
> > Thank you for the fast response (and even faster fix),
> >
>
> Eckart, does your Comet sample work now?
... and the list of messages is strangely serialized into JSON by se.scalablesolutions.akka.serialization.Serializer like this:
------------- mvn scala:console output ------------------
scala> new String(Serializer.ScalaJSON.out(List("2","3")))
new String(Serializer.ScalaJSON.out(List("2","3")))
res1: java.lang.String =
��w
["2", "3"]
---------------------------------------------------------
embedded in a jetty
> Are you running Akka as kernel or in a container?
>
Great, thanks for the info Eckart, me and JF are working on it :-)
To unsubscribe from this group, send email to akka-user+...@googlegroups.com.
--
Eckart Hertzler
then I will REST assured...
;-)
>
>
> >
> > > >
> > > > Eckart
> > > >
> > > > > Note that for Akka 0.6 I can cut a special version of Atmosphere so
> > we
> > > > > don't rely on snapshot (same for Jersey).
> > > > >
> > > > > A+
> > > > >
> > > > > -- Jeanfrancois
> > > > >
> > > > > >
> > > > > > Viktor, can you shed some light on this?
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Eckart
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > >
> > > > > > You received this message because you are subscribed to the Google
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> > > > > > To unsubscribe from this group, send email to
> > > > akka-user+...@googlegroups.com<akka-user%2Bunsu...@googlegroups.com>
> > <akka-user%2Bunsu...@googlegroups.com<akka-user%252Buns...@googlegroups.com>
> > >
> > > > .
> > > > > > For more options, visit this group at
> > > > http://groups.google.com/group/akka-user?hl=en.
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > > --
> > > > >
> > > > > You received this message because you are subscribed to the Google
> > Groups
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> > <akka-user%2Bunsu...@googlegroups.com<akka-user%252Buns...@googlegroups.com>
> > >
> > > > .
> > > > > For more options, visit this group at
> > > > http://groups.google.com/group/akka-user?hl=en.
> > > > >
> > > > >
> > > > >
> > > >
> > > > --
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Viktor Klang
And hope no one drops the SOAP... ;-)
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--
Jeanfrancois Arcand
map the exception (I think there is an issue with Jersey as it should
return a 500 instead...quite confusing to debug). The call stack is:
> "Grizzly-9998-WorkerThread(2)"
> org.atmosphere.util.BroadcasterLookup.lookup(BroadcasterLookup.java:65)
> org.atmosphere.jersey.AtmosphereProviders$BroadcasterProvider$1.fromString(AtmosphereProviders.java:76)
> com.sun.jersey.server.impl.model.parameter.multivalued.StringReaderExtractor.extract(StringReaderExtractor.java:75)
> com.sun.jersey.server.impl.model.parameter.PathParamInjectableProvider$PathParamInjectable.getValue(PathParamInjectableProvider.java:74)
> com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:43)
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:119)
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:147)
> com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67)
> com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259)
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71)
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:990)
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384)
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451)
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632)
> se.scalablesolutions.akka.comet.AkkaServlet$$anon$1$$anon$2.onRequest(AkkaServlet.scala:34)
> se.scalablesolutions.akka.comet.AkkaServlet$$anon$1.onRequest(AkkaServlet.scala:44)
> org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:144)
> org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:117)
> org.atmosphere.container.GrizzlyCometSupport.service(GrizzlyCometSupport.java:99)
> org.atmosphere.cpr.AtmosphereServlet.doCometSupport(AtmosphereServlet.java:772)
> org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:755)
> org.atmosphere.cpr.AtmosphereServlet.doGet(AtmosphereServlet.java:742)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> com.sun.grizzly.http.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:195)
> com.sun.grizzly.http.servlet.FilterChainImpl.invokeFilterChain(FilterChainImpl.java:139)
> com.sun.grizzly.http.servlet.ServletAdapter.doService(ServletAdapter.java:376)
> com.sun.grizzly.http.servlet.ServletAdapter.service(ServletAdapter.java:324)
> com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
> com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
> com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:473)
> com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:341)
> com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:84)
> com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:161)
> com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:137)
> com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:88)
> com.sun.grizzly.http.TaskBase.run(TaskBase.java:189)
> com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
> com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
> java.lang.Thread.run(Thread.java:619)
The issue is with the AkkaServlet which *must* set the default
broadcaster to JerseyBroadcaster and not let Atmosphere use it's default
one. The fix is simple but I must admit the 404 was a tough one to debug
as I needed to look at Jersey code to understand the problem :-(
Anyway Viktor will commit a fix and I will tag once I get the OK :-)
A+
-- Jeanfrancois
Viktor Klang
Fix committed to master!
Please checkout master and verify that your stuff is working!
I owe Jean-François one helluva beer!
A+
-- Jeanfrancois
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Viktor Klang
Jonas Bonér
Viktor for your perseverance. Cutting 0.6 tomorrow morning.
----
Jonas Bonér
twitter: @jboner
blog: http://jonasboner.com
work: http://scalablesolutions.se
code: http://github.com/jboner
code: http://akkasource.org
also: http://letitcrash.com
On Jan 4, 2010, at 23:22, Jeanfrancois Arcand <jfarca...@gmail.com>
wrote:
> --
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Viktor Klang
Sweet. Awesome job guys. Thanks a lot JF for steering things up and
Viktor for your perseverance. Cutting 0.6 tomorrow morning.
Sweet! Sleep tight folks! I know I will! :-D
Mark Chadwick
Jonas Bonér
and Jersey or how do we best handle this? Were you creating special
releases JF?
----
Jonas Bonér
twitter: @jboner
blog: http://jonasboner.com
work: http://scalablesolutions.se
code: http://github.com/jboner
code: http://akkasource.org
also: http://letitcrash.com
On Jan 4, 2010, at 23:22, Jeanfrancois Arcand <jfarca...@gmail.com>
wrote:
> OK I've found the issue...Jersey wrongly report a 404 because it can't
> map the exception (I think there is an issue with Jersey as it should
> return a 500 instead...quite confusing to debug). The call stack is:
>
>
>> "Grizzly-9998-WorkerThread(2)"
>> org.atmosphere.util.BroadcasterLookup.lookup(BroadcasterLookup.java:
>> 65)
>> (AtmosphereServlet.java:772)
>> org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:
>> 755)
>> org.atmosphere.cpr.AtmosphereServlet.doGet(AtmosphereServlet.java:
>> 742)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>> com.sun.grizzly.http.servlet.FilterChainImpl.doFilter
>> (FilterChainImpl.java:195)
>> com.sun.grizzly.http.servlet.FilterChainImpl.invokeFilterChain
>> (FilterChainImpl.java:139)
>> com.sun.grizzly.http.servlet.ServletAdapter.doService
>> (ServletAdapter.java:376)
>> com.sun.grizzly.http.servlet.ServletAdapter.service
>> (ServletAdapter.java:324)
>> com.sun.grizzly.tcp.http11.GrizzlyAdapter.service
>> (GrizzlyAdapter.java:166)
>> com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:
>> 791)
>> com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:
>> 473)
>> com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:341)
>> com.sun.grizzly.comet.CometAsyncFilter.doFilter
>> (CometAsyncFilter.java:84)
>> com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters
>> (DefaultAsyncExecutor.java:161)
>> com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt
>> (DefaultAsyncExecutor.java:137)
>> com.sun.grizzly.arp.AsyncProcessorTask.doTask
>> (AsyncProcessorTask.java:88)
>> com.sun.grizzly.http.TaskBase.run(TaskBase.java:189)
>> com.sun.grizzly.util.AbstractThreadPool$Worker.doWork
>> (AbstractThreadPool.java:330)
>> com.sun.grizzly.util.AbstractThreadPool$Worker.run
>> (AbstractThreadPool.java:309)
>> java.lang.Thread.run(Thread.java:619)
>
> The issue is with the AkkaServlet which *must* set the default
> broadcaster to JerseyBroadcaster and not let Atmosphere use it's
> default
> one. The fix is simple but I must admit the 404 was a tough one to
> debug
> as I needed to look at Jersey code to understand the problem :-(
>
> Anyway Viktor will commit a fix and I will tag once I get the OK :-)
>
> A+
>
> -- Jeanfrancois
>
>
>
> --
>
> You received this message because you are subscribed to the Google
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Jeanfrancois Arcand
On 04/01/10 5:52 PM, Jonas Bonér wrote:
> For the release tomorrow. Are we using special versions of Atmosphere
> and Jersey or how do we best handle this? Were you creating special
> releases JF?
yes, working on it. The artifact will be named:
[jersey|atmosphere-module-name]-version-[akka06].jar
atmosphere-runtime-0.5-akka06.jar
jersey-core-1.1.5-akka06.jar
Any better naming in mind?
A+
-- Jeanfrancois
Jonas Bonér
--
Viktor Klang
for Jersey: 1.1.5-ea-20100104
for Atmosphere: 0.5.v20100104
I don't know if theese are the correct ones, but my gut feeling says they are.
Can you change atmosphere.version and jersey.version in $AKKA_HOME/pom.xml and try to build using that?
Thanks Jonas!