| Re: [ecf-dev] ECF3.2 using Spring |
Hi Abhisek,
Ok, good...thanks for including the exception. Now would you please describe the sequencing and what you are doing to start/stop things?
e.g.
1) Start host
2) Start client (remote service then discovered and used successfully?)
3) Stop host (whole process?, unregister remote service?, if not whole framework is stopped, then what bundles are stopped?)
4) Restart host (same way as in 2?)
5) Client discovers remote service and generates exception as below.
Thanks,
Scott
abhisek saikia wrote:
Hi Scott
I am sorry to increase the mail size :)
As per your suggestion 1.I tried using pure java without using any spring code.I have attached the deployable osgi plugin bundles which also inclues source.
On restart server osgi .its throwing the below exception
org.osgi.framework.ServiceException: Service exception on remote service proxy rsid=org.eclipse.ecf.remoteservice.RemoteServiceID[containerID=StringID[ecftcp://localhost:3787/server];containerRelativeID=0]
at org.eclipse.ecf.provider.remoteservice.generic.RemoteServiceImpl.invoke(RemoteServiceImpl.java:131)
at $Proxy0.hello(Unknown Source)
at org.eclipse.ecf.examples.internal.remoteservices.hello.dm.consumer.HelloClientThread.run(HelloClientThread.java:25)
Caused by: org.eclipse.ecf.core.util.ECFException: Exception sending request
at org.eclipse.ecf.provider.remoteservice.generic.RegistrySharedObject.callSynch(RegistrySharedObject.java:445)
at org.eclipse.ecf.provider.remoteservice.generic.RemoteServiceImpl.callSync(RemoteServiceImpl.java:64)
at org.eclipse.ecf.provider.remoteservice.generic.RemoteServiceImpl.invoke(RemoteServiceImpl.java:115)
... 2 more
Caused by: java.net.ConnectException: not connected
at org.eclipse.ecf.provider.generic.ClientSOContainer.checkConnected(ClientSOContainer.java:509)
at org.eclipse.ecf.provider.generic.ClientSOContainer.sendMessage(ClientSOContainer.java:426)
at org.eclipse.ecf.provider.generic.SOContext.sendMessage(SOContext.java:230)
at org.eclipse.ecf.core.sharedobject.BaseSharedObject.sendSharedObjectMsgTo(BaseSharedObject.java:358)
at org.eclipse.ecf.provider.remoteservice.generic.RegistrySharedObject.sendCallRequest(RegistrySharedObject.java:843)
at org.eclipse.ecf.provider.remoteservice.generic.RegistrySharedObject.callSynch(RegistrySharedObject.java:420)
Thanks and Regards
Abhisek
On Mon, May 10, 2010 at 11:59 PM, Scott Lewis <slewis@xxxxxxxxxxxxx <mailto:slewis@xxxxxxxxxxxxx>> wrote:
Hi Abhisek,
<http://dev.eclipse.org/mhonarc/lists/ecf-dev/msg03316.html%29...to>This seems to me to likely be some issue with how/when a given
bundle is started. Given that you are using Spring DM to manage
the runtime (along with the newly minted 'Spring-ECF remote
services bridge' work), I think this may be very well some
interaction with how Spring DM is/is not starting
things...particularly on the consumer.
So, I have a couple of suggestions and observations about how to
proceed.
1) Could you try the hello world examples without Spring DM?
(i.e. just use the product configurations that are present in the
consumer and/or host projects/ directory?). Since I'm not
personally an expert in Spring DM, and wasn't the author of the
code on the 'Using Spring with ECF...' page, I'm not at all
certain what Spring is doing upon startup.
2) *Since ECF 3.2 release* we have changed the consumer/proxy
container creation policy as per this bug:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=303979. Given the
'Using Spring with ECF...' code was written *prior* to this
change, the Spring-ECF bridge code may not be completely up to
date. I have to get in direct contact with the author of that
code to find out if the Spring-ECF bridge can be simplified. I
believe it probably *can* be simplified, as it should no longer be
even necessary for any container to be created in advance of the
remote service registration (host) and/or the discovery
(consumer). So I believe that the Spring-ECF work can/could be
significantly simplified, but like I said I need to interact with
the original author of that work before I can say for sure.
Does this make sense? I will try to reconnect with the Spring-ECF
bridge author and see if we can update both the code and the
documentation around that as quickly as possible (hopefully before
Helios). Like I said, I suspect that the Spring-ECF integration
will get significantly *easier and simpler* now that bug 303979
has been addressed, but we have some work to do on both the
Spring-ECF bridge code, and the documentation...and since the
Spring/ECF work is currently in incubation we haven't completed
that work yet.
Actually, if you/Abhisek would like, I would encourage you to
connect with and work directly with the Spring-ECF bridge author
(Angelo Zerr...see this mailing list posting:
http://dev.eclipse.org/mhonarc/lists/ecf-dev/msg03316.html)...to<mailto:slewis@xxxxxxxxxxxxx <mailto:slewis@xxxxxxxxxxxxx>>>
update the Spring-ECF bridge, and to test/use various remote
services scenarios with Spring. *Also*, some of the Spring DM
work is in the process of being contributed to the new Gemini and
Virgo projects at the Eclipse Foundation, and it would be *very
good* to have the ECF remote services bridge updated and ready to go
Scott
abhisek saikia wrote:
Hi Scott
I just tested a simple hello word sample from
http://wiki.eclipse.org/Using_Spring_with_ECF_Remote_Services
i tried from spring as well as plain java code.
i have 3 osgi bundles
1.hello-interface (contains interface
org.eclipse.ecf.examples.remoteservices.hello.IHello)
2.hello-consumer(containing "client ecf generic container"
creation code and hello service call from a thread )
3.hello-provider (containing "server ecf generic container"
creation code and implementation of IHello)
i have 2 standalone osgi running ,where one osgi(i named it as
client osgi) is running bundle 1 and 2 .Another osgi(i named
it as server osgi) is running bundle 1 and 3 *Failure Scenario: *start client osgi. then start server osgi.
After this for the following code which is running in consumer
bundle is failing at line number 8.this could never be able to
connect to server osgi to perform the remote call
1.public class HelloClientThread extends Thread {
2. private IHello hello;
3. public void setHello(
IHello hello) {
4. this.hello = hello;
}
@Override
5. public void run() {
6. while (true) {
7. try {
8. hello.hello("HelloClientthread");
9. System.out.println("IHello service called with
HelloClientThread (Spring DM).");
Thread.sleep(1000);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
*Success scenario :*
start the server osgi.then start the client osgi
above remote call is successful.
then stop the hello-provider bundle from the server osgi
console.using command "stop [bundle no]"
still the service call from consumer bundle is successful
---this scenario was failing for r-osgi
*Failure Scenario:*
*
start the server osgi.then start the client osgi.remote hello
call is successful.After that restart server osgi.hello call
from consumer bundle stats failing .(its throwing Connection
exception)
I currently dont have the setup with me for which i am not
able to paste the logs.Sorry for my previous brief details
Thanks and Regards
Abhisek
*
* *
On Mon, May 10, 2010 at 8:58 PM, Scott Lewis
<slewis@xxxxxxxxxxxxx <mailto:slewis@xxxxxxxxxxxxx><mailto:ecf-dev@xxxxxxxxxxx <mailto:ecf-dev@xxxxxxxxxxx>>
wrote:
Hi Abhisek,
abhisek saikia wrote:
Hi Scott
Today i tried with ECF generic server.But i found it not
much flexible
For the following scenarios its failing
1.client start first and server start next.client
remote calls
to servers are failing
To diagnose this, you are going to have to describe what
exactly
you are doing and what is happening.
For example...some questions: How are the calls failing? Are
exceptions being thrown? If so, please attach them and/or open
bug reports...as unless we can somehow reproduce these
difficulties we have no way to identify what's wrong...because
what you are seeing doesn't correspond to what we are
seeing with
the existing examples and tests.
What you are describing could be due to a number of
things...including your local network environment, your
client/server environments, your specific OSGi framework
environment (e.g. something with Spring), when/how you are
making
the remote calls, the version of ECF, or other things that are
unique to your use case or situation.
I would prefer to take one use case at a time...i.e. pick a
specific use case, try it out...if it doesn't work then try to
characterize the environment, the use case, and failure
conditions
(e.g. exceptions) with as much detail as possible...and
we'll try
to jointly come to a solution.
Thanks,
Scott
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