KAFKA-8786: Deprecated Gradle features making it incompatible with Gradle 6.0

[aljoshare]

The lines 549-552 of the build.gradle makes it incompatible with Gradle 6.0. It was fixed by changing

additionalSourceDirs = files(javaProjects.sourceSets.main.allSource.srcDirs)
sourceDirectories = files(javaProjects.sourceSets.main.allSource.srcDirs)
classDirectories = files(javaProjects.sourceSets.main.output)
executionData = files(javaProjects.jacocoTestReport.executionData)

to

additionalSourceDirs.from = javaProjects.sourceSets.main.allSource.srcDirs
sourceDirectories.from = javaProjects.sourceSets.main.allSource.srcDirs
classDirectories.from = javaProjects.sourceSets.main.output
executionData.from = javaProjects.jacocoTestReport.executionData

No expected changes to unit or integration tests.

[stanislavkozlovski]

Is there an expected date for Gradle 6.0? I couldn't find it in https://gradle.org/releases/

[aljoshare]

There is no specific date but the period between the major releases is about a year which implies that version 6.0 will probably be released in the fourth quarter of 2019

[stanislavkozlovski]

Right, does this compile with the current gradle version?

retest this please

[ijuma]

Gradle 6.0 is the next release and it's required for Java 13 support (unfortunately).

[ijuma]

retest this please

[ijuma]

Thanks for the PR. We need to update the readme to specify the minimum version of gradle required after these changes.

[ijuma]

This will be done as part of #7909. I'll credit @AljoschaP as the co-author of the change.