David Maplesden created CXF-8824:
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Summary: CDI beans produced by {{@Produces}} methods are generated
twice
Key: CXF-8824
URL: https://issues.apache.org/jira/browse/CXF-8824
Project: CXF
Issue Type: Bug
Components: Integration, JAX-RS
Affects Versions: 3.5.5, 3.2.0
Environment: CXF 3.5.5 running in Tomcat 9.0.70 using JBoss Weld 3.1.9
as the CDI implementation. Using cxf-integration-cdi and CXFCdiServlet
Reporter: David Maplesden
We recently upgraded from CXF 3.1.9 to 3.5.5 and after upgrade encountered this
bug.
Specifically we have some {{javax.ws.rs.container.ContainerRequestFilter}}
implementations that are built using {{@Produces}} methods on our base
{{javax.ws.rs.core.Application}} class. Since the upgrade we have discovered
that these filters are being added to the request interceptor chain twice.
After debugging I found that all CDI managed beans built by {{@Produces}}
methods that use the {{@Provider}} annotation for discovery are now processed
twice.
It appears to me that the problem is in the current implementation of
{{{}JAXRSCdiResourceExtension{}}}. This implementation has {{@Observes}}
methods for both {{ProcessProducerMethod}} events and {{ProcessBean}} events -
but {{ProcessProducerMethod}} extends {{ProcessBean}} so both of these handlers
get called for each {{ProcessProducerMethod}} event fired by the CDI
implementation. This means both handlers add the producer method to the list of
{{providerBeans}} and the producer method is subsequently called twice when
{{loadProviders()}} is called and two instances of the provider are passed to
the {{{}JAXRSServerFactoryBean{}}}.
I believe this behaviour was introduced by this commit:
[https://github.com/apache/cxf/commit/4b96a222aea61f9fe80083c4c4bb1519955890ab]
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