Integration with RESTeasy broken with 2.3

[cowtowncoder]

Looks like changes made in ProviderBase for 2.3 broke integration by RESTeasy, by removing call used by its jackson-based provider:

https://github.com/resteasy/Resteasy/blob/e30b28d6cdd2cdfaaa90e94c471ae88d6b813bbe/jaxrs/providers/jackson2/src/main/java/org/jboss/resteasy/plugins/providers/jackson/ResteasyJackson2Provider.java#L107

as reported by @tbroyer.

Beyond fixing the immediate issue, it would be great if we could figure out a way to add tests for downstream dependencies, simple sanity checks to at least ensure that up-to-date versions compile with new Jackson JAX-RS provider implementations (and better yet, work to some degree). Something like this actually works with Jersey, since there are small tests we use for integration tests.

[cowtowncoder]

Specific issue should be fixed, but what I really want to do is figure out a way to guard against basic integration issues if possible.

[tbroyer]

There are several tools that can help:

• https://github.com/jeluard/semantic-versioning
• http://mojo.codehaus.org/clirr-maven-plugin/
• https://code.google.com/p/japi-checker/wiki/MavenPlugin
• http://javadiff.sourceforge.net/ (doclet to use with the maven-javadoc-plugin, and analyze differences manually to detect breaking changes; Guava uses it if you want an example)

[cowtowncoder]

Thanks.

[cowtowncoder]

Immediate issue resolved.

[night199uk]

Is this in 2.3.2?
I'm trying to upgrade my wildfly 8 server modules to 2.3.2 to work around this, by replacing the modules for jackson-jaxrs with the 2.3.2 variants but I still see the same issue no matter what I do.
I need jackson-datatype-hibernate4 for lazy initialization handling and wildfly uses hibernate 4.3, which only seems to be supported by jackson-datatype-hibernate4:2.3+.
Link to the relevant Wildfly issue:
https://issues.jboss.org/browse/WFLY-2959

[cowtowncoder]

@night199uk Fix should be in 2.3.2; deprecated methods were added back. Can you provide exception for failure? Perhaps there is some other compatibility issue that causes problems.

[night199uk]

17:49:51,096 ERROR [io.undertow.request](default task-1) UT005023: Exception handling request to /x.x.x.x-x-0.0.1-SNAPSHOT/rest/y/y: java.lang.NoSuchMethodError: org.jboss.resteasy.plugins.providers.jackson.ResteasyJackson2Provider._configForWriting(Lcom/fasterxml/jackson/databind/ObjectMapper;[Ljava/lang/annotation/Annotation;)Lcom/fasterxml/jackson/jaxrs/json/JsonEndpointConfig;
at org.jboss.resteasy.plugins.providers.jackson.ResteasyJackson2Provider.writeTo(ResteasyJackson2Provider.java:137) [resteasy-jackson2-provider-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.writeTo(AbstractWriterInterceptorContext.java:129) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.ServerWriterInterceptorContext.writeTo(ServerWriterInterceptorContext.java:62) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.proceed(AbstractWriterInterceptorContext.java:118) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.security.doseta.DigitalSigningInterceptor.aroundWriteTo(DigitalSigningInterceptor.java:143) [resteasy-crypto-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.proceed(AbstractWriterInterceptorContext.java:122) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.plugins.interceptors.encoding.GZIPEncodingInterceptor.aroundWriteTo(GZIPEncodingInterceptor.java:100) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.proceed(AbstractWriterInterceptorContext.java:122) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.plugins.interceptors.encoding.ServerContentEncodingAnnotationFilter.aroundWriteTo(ServerContentEncodingAnnotationFilter.java:60) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.proceed(AbstractWriterInterceptorContext.java:122) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.ServerResponseWriter.writeNomapResponse(ServerResponseWriter.java:99) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.writeResponse(SynchronousDispatcher.java:427) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:376) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.6.Final.jar:]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:687) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.7.0_07]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.7.0_07]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.7.0_07]

All Wildfly jackson libs under modules/ were replaced with their respective 2.3.2 variants. I'm now sure how to dump the classloader to check what wildfly is actually using, and annoyingly the jackson versions are not in the stacktrace, but the 2.3.0 libs were removed from the filesystem so I'm basically certain wildfly is using 2.3.2. Eclipse recognizes the method as deprecated from the 2.3.2 source included via maven in my pom.xml so I don't see any issues there. If there is a class loader issue loading the wrong jackson libs, I can't figure it out.

[night199uk]

I uploaded a simple test project to the wildfly issue here:
https://issues.jboss.org/browse/WFLY-2959
You can deploy the second version of that directly on Wildfly 8 to test.

[cowtowncoder]

Thanks.

[cowtowncoder]

Hmmh. There seems to be some discrepancy between naming here; error message is missing leading underscore? However since ResteasyJackson2Provider uses name with leading underscore, maybe this is not the actual problem.

Looking at method definitions (2.2 vs 2.3), this might be something else: maybe it's linkage problem. If so, the problem is that while I added back protected EP_CONFIG _configForWriting(MAPPER mapper, Annotation[] annotations), it is in ProviderBase; but 2.2 had it defined in JacksonJsonProvider.java.
So perhaps it is source compatible but NOT binary compatible, because class in which method is declared has changed (that is: JacksonJsonProvider does not have that method, its super-class has). I am not 100% sure about this, but I think byte code does store references this way (method name and class/interface it is defined in, to resolve during loading of class).

I will go ahead and add an override, just in case.

[cowtowncoder]

Added explicit overrides for sub-classes, hoping this resolves remaining problem.
Will try to see if I can reproduce the fix now.