GradleTest fails alleging an issue with jackson-bom version 2.15.0-rc1

[cowtowncoder]

So, after publishing 2.15.0-rc1, GradleTest started failing with:

[ERROR] Failures: 
[ERROR]   GradleTest.testJacksonBomDependency:36->build:64 FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':checkMetadata'.
> Missing dependency to 'jackson-bom'. Gradle Metadata publishing is most likely broken:
    - com.fasterxml.jackson.core:jackson-core:2.15.0-rc1

At first I was wondering if that might be due to:

FasterXML/jackson-core#955

but after upgrading (just to be sure), via #17 failure persists. Perhaps that's just due to oddities of handling of (Pre-)Release Candidates, version number. Or maybe I made some mistake in publishing. But would be good to figure out.

[cowtowncoder]

@jjohannes I was wondering if you had an idea of what is the problem here?

[jjohannes]

@cowtowncoder happy to check. The issue is valid. Which shows, at least, that this test is useful to some degree. Maybe we could print a more actionable message though.

Two things to check in such a case:

• Is the .module file present?
  It is: https://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-core/2.15.0-rc1/jackson-core-2.15.0-rc1.module
• Does the pom.xml contain the comment that informs Gradle about the existence of the file?
  It does not: https://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-core/2.15.0-rc1/jackson-core-2.15.0-rc1.pom

I am pretty sure it is the same problem as with jackson-module-afterburner. Here the shade plugin was added in core that rewrites the pom and removes the comment:
FasterXML/jackson-core#843

We can do the same fix in the core pom.xml as here:
FasterXML/jackson-modules-base@6df8246#diff-679477445fa9271ed890643e4b1e942bd43356a47c02f6e98e908d1538969787

[cowtowncoder]

Ah! Yes, that makes sense. Should have remembered... I'll have a look at this tomorrow, hope we can get it fixed for 2.15.0-rc2.

And yes, improved message would always be a nice improvement. Although at least now I have better idea what to look for (which is pretty obvious in hindsight -- I should have been able to figure it out).

[cowtowncoder]

Fixed via FasterXML/jackson-core#966 I hope.
Will leave open until we can publish 2.15.0-rc2

[cowtowncoder]

2.15.0-rc2 was released, no longer failing, closing.

[cowtowncoder]

With Jackson 2.15.1 release (https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.15.1), getting closer to getting GradleTest.testJacksonBomDependency to pass -- mr-bean module the lone problem (due to shading of ASM):

[ERROR] Failures: 
[ERROR]   GradleTest.testJacksonBomDependency:36->build:64 FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':checkMetadata'.
> Dependencies of com.fasterxml.jackson.module:jackson-module-mrbean:2.15.1 are wrong in Gradle Metadata:
    POM:    com.fasterxml.jackson.core:jackson-core:2.15.1, com.fasterxml.jackson.core:jackson-databind:2.15.1, org.ow2.asm:asm:9.4
    Gradle: com.fasterxml.jackson.core:jackson-core:2.15.1, com.fasterxml.jackson.core:jackson-databind:2.15.1

[jjohannes]

Good to hear that the issue with core is fixed in 2.15.1 👍

Regarding mrbean: was this just some timing issue with the releases and this will be fine in 2.16? Or is it unclear why this problem still exists?

[cowtowncoder]

@jjohannes I think it's a real problem, need to fix project definition in pom.xml similar to how Afterburner was changed. I forget what specifically is involved; or why it wasn't included as a failure earlier.