Hi All,
I came up with a test that successfully overrides the original
/FailsafeExecutionManagerProvider/ Safeguard class.
It was a bit of a surprise but, in this case, beans.xml is useless
because "The alternatives that you specify in the |beans.xml| file apply
only to classes in the same archive." see:
https://docs.oracle.com/javaee/7/tutorial/cdi-adv002.htm
Because the beans are in different jar files, priority has to be used
instead:
@Priority(Interceptor.Priority.APPLICATION+10)
The precise priority might need to be fine tuned because of the fault
tolerance interceptor... Will have to test the final behavior.
Also, we probably need to reorganize the tomee-microprofile-webapp
project...
This is needed because the code overriding the bean needs to be in a
library and this project only creates a war file, which is in fact a
container for the bundled libraries. The classes we place in there will
not be in the final server.
I'm thinking on something like:
tomee
|
--- tomee-microprofile
|
--- tomee-microprofile-common (The
JAR to be included in .../lib)
|
--- tomee-microprofile-webapp (The
same as now with an additional dependency)
Cheers.
Bruno Baptista
http://twitter.com/brunobat_
On 16/11/18 16:26, Bruno Baptista wrote:
Hi Romain,
Yeah... @Resource would be the right thing to use in order to inject
the managed resource. Something like this:
@Resource(name = "DefaultManagedScheduledExecutorService")
private ManagedScheduledExecutorService executor;
Creating the test now.
Thanks for the help Romain.
Bruno Baptista
http://twitter.com/brunobat_
On 16/11/18 16:07, Romain Manni-Bucau wrote:
FYI this works:
@ApplicationScoped
public class CustomProvider extends FailsafeExecutionManagerProvider {
@Override
@Produces
@Specializes
@ApplicationScoped
public ExecutionManager createExecutionManager() {
return new FailsafeExecutionManager() {
@Override // hardcoded impl for testing purposes
public Object execute(final InvocationContext invocationContext) {
return "replaced";
}
};
}
}
Side note: did you want to use @Resource for the executor injection?
Romain Manni-Bucau
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Le ven. 16 nov. 2018 à 14:54, Romain Manni-Bucau<rmannibu...@gmail.com> a
écrit :
Hi Bruno,
I assume the alternative is activated in the beans.xml? (if not try adding
a @Priority maybe or just drop the annotation which should be useless)
If it is i'd start by writing a small test (with application composer) to
check if it is a bug in tomee cause this is how it must work
Romain Manni-Bucau
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Le ven. 16 nov. 2018 à 12:44, Bruno Baptista<bruno...@gmail.com> a
écrit :
Hi Roman,
This is what I did and it doesn't work. The original bean is always
picked up:
@Specializes@Alternative@ApplicationScopedpublic class
FailsafeContainerExecutionManagerProvider extends
FailsafeExecutionManagerProvider {
@Inject private ManagedScheduledExecutorService executor;
@Produces @ApplicationScoped @Override public ExecutionManager
createExecutionManager() throws Exception {
final MicroprofileAnnotationMapper mapper =
MicroprofileAnnotationMapper.getInstance();
final DefaultExecutorServiceProvider executorServiceProvider = new
DefaultExecutorServiceProvider(executor);
final BulkheadManagerImpl bulkheadManager = new BulkheadManagerImpl();
final FailsafeCircuitBreakerManager circuitBreakerManager = new
FailsafeCircuitBreakerManager();
final FailsafeRetryManager retryManager = new FailsafeRetryManager();
return new FailsafeExecutionManager(
mapper,
bulkheadManager,
circuitBreakerManager,
retryManager,
new ExecutionPlanFactory(circuitBreakerManager, retryManager,
bulkheadManager, mapper,
executorServiceProvider),
executorServiceProvider);
}
}
I feel that this needs to be done in a different way... Would you be able
to point me to a similar override currently being done?
Cheers
Bruno Baptista
https://twitter.com/brunobat_
http://tomitribe.com
https://tribestream.io
Bruno Baptista
http://twitter.com/brunobat_
On 16/11/18 10:28, Romain Manni-Bucau wrote:
Hi Bruno,
it is a palin bean so @Specializes works, did you put it on the method?
Romain Manni-Bucau
@rmannibucau<https://twitter.com/rmannibucau> <https://twitter.com/rmannibucau> |
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Le ven. 16 nov. 2018 à 11:00, Bruno Baptista<bruno...@gmail.com>
<bruno...@gmail.com> a écrit :
Hi all,
We have a problem with the integration of the Safeguard Fault Tolerance
library on TomEE 8 and I need help to solve it. This is a follow up to
the original email thread, from Oct 3, in the Geronimo mailing list,
where we decided to do perform the override in the container side.
I need to override the starting point for the library, originally here:
https://github.com/apache/geronimo-safeguard/blob/master/safeguard-impl/src/main/java/org/apache/safeguard/impl/cdi/FailsafeExecutionManagerProvider.java
Because it's not using a managed executor service from TomEE... Like
this one: "java:comp/DefaultManagedScheduledExecutorService"
I Expect to do the wiring in here
.../apache-tomee/tomee/tomee-microprofile-webapp/src
Like using a @Specializes bean or something, but I think we cannot do
that there. Could someone help me wire up this new bean?
I had a PR to fix this the lib itself but it was decided not to move
with it. For the curious, it's
here:https://github.com/apache/geronimo-safeguard/pull/2
Cheers
--
Bruno Baptistahttp://twitter.com/brunobat_
