Re: Guideline for upgrading plugin to JDK 9+

Sun, 20 Oct 2019 14:38:44 -0700

Title: Re: Guideline for upgrading plugin to JDK 9+
I think that's the second option:

[INFO] --- maven-enforcer-plugin:3.0.0-M1:enforce (display-info) @ cucumber-reports ---
[INFO] Restricted to JDK 1.8 yet com.fasterxml.jackson.core:jackson-annotations:jar:2.10.0.pr2:compile contains module-info.class targeted to 53.0
[INFO] Restricted to JDK 1.8 yet com.fasterxml.jackson.core:jackson-databind:jar:2.10.0.pr2:compile contains module-info.class targeted to 53.0
[INFO] Restricted to JDK 1.8 yet com.fasterxml.jackson.core:jackson-core:jar:2.10.0.pr2:compile contains module-info.class targeted to 53.0
[INFO] Ignoring requireUpperBoundDeps in com.google.guava:guava
[WARNING] Rule 2: org.apache.maven.plugins.enforcer.EnforceBytecodeVersion failed with message:
Found Banned Dependency: com.fasterxml.jackson.core:jackson-annotations:jar:2.10.0.pr2
Found Banned Dependency: com.fasterxml.jackson.core:jackson-databind:jar:2.10.0.pr2
Found Banned Dependency: com.fasterxml.jackson.core:jackson-core:jar:2.10.0.pr2


but then how to skip this particular 'violation' in this dependency? Or maybe discard all such problems?

Damian


 You should not change to JDK 9 if not absolutely necessary.

Did your dependency really change the API to JDK 9? Or did they just compile with JDK 9 and add a module information file which requires the increased class file level? Those files can be ignored in the pom...


 Am 20.10.2019 um 23:16 schrieb Damian Szczepanik <[email protected]>:

Hi,

After upgrading some plugin dependencies I found that dependency is compiled against JDK 9 while my plugin still uses 8 - compilation has failed.

Is there any recommendation, guideline, best practices that guide about:
  1. Should I upgrade the plugin to JDK 9+ or it's not mandatory because from SLA perspective Jenkins should be upgraded?
  2. Jenkins does not support 9 so should I upgrade to 11 at least?
  3. Is there any plugin that have been already upgraded and could be taken as good reference how to make it painless?
  4. What I would loose? eg Jenkins with older JDK won't be able to install new version of my plugin
Damian

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