Support the Gradle configuration cache

[PinkMoustacheMan]

Since Gradle is working strongly towards its configuration cache, the io.openliberty.tools.gradle.Liberty Plugin should support it as well.

Issue

When the org.gradle.configuration-cache Gradle property is enabled, tasks provided by the plugin, such as libertyStop and libertyDev fail with the following error message:

Task `:libertyDev` of type `io.openliberty.tools.gradle.tasks.DevTask`: invocation of 'Task.project' at execution time is unsupported.

Versions used

Gradle 8.11.1
Open Liberty Gradle Tools 3.9.1

---

Here is the full error message

08:45:07: Executing 'libertyDev'…

Calculating task graph as no cached configuration is available for tasks: libertyDev
> Task :libertyDev FAILED
[Incubating] Problems report is available at: file:///home/my_user/workspace/open-liberty-test/build/reports/problems/problems-report.html

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* What went wrong:
Execution failed for task ':libertyDev'.
> Could not get unknown property 'liberty' for root project 'open-liberty-test' of type org.gradle.api.Project.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
Configuration cache problems found in this build.

1 problem was found storing the configuration cache.
- Task `:libertyDev` of type `io.openliberty.tools.gradle.tasks.DevTask`: invocation of 'Task.project' at execution time is unsupported.
  See https://docs.gradle.org/8.11.1/userguide/configuration_cache.html#config_cache:requirements:use_project_during_execution

See the complete report at file:///home/my_user/workspace/open-liberty-test/build/reports/configuration-cache/cqtvlhct0pddw26hh6a2ntcyy/5gu9nyybhjaeql176gp7pgak/configuration-cache-report.html
> Invocation of 'Task.project' by task ':libertyDev' at execution time is unsupported.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

BUILD FAILED in 296ms
10 actionable tasks: 1 executed, 9 up-to-date
Configuration cache entry discarded with 1 problem.
08:45:08: Execution finished 'libertyDev'.

[cherylking]

Thank you for bringing this to our attention. We will look into it.