[Gradle JDK Automanagement] Install only used JDKs #479
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| /** | ||
| * Option to include a specific java major version when generating/checking the gradle jdk configuration files. | ||
| */ | ||
| @Input | ||
| @Option( | ||
| option = "includeJava", | ||
| description = "Generates the jdk configuration directories for the Java major version.") | ||
| public abstract SetProperty<String> getIncludedJavaMajorVersion(); |
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I think we could avoid this if we were to regenerate the jdk configs at the same time (ie same gradle invocation in excavator) as bumping the versions? The problem should only present itself when changing the versions used, then trying to run gradle again but the wrong JDKs are included. I think we might be able to do that.
If that doesn't work, I think I'd prefer an option to just use all the configured versions rather than including specific ones. That way we don't need to keep updating excavators with specific versions, they can just include everything they need.
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I think we could avoid this if we were to regenerate the jdk configs at the same time (ie same gradle invocation in excavator) as bumping the versions? The problem should only present itself when changing the versions used, then trying to run gradle again but the wrong JDKs are included. I think we might be able to do that.
I am not sure how that would work. If we want to bump a version of jdk used (eg. javaVersions libraryTarget = 21), when running any gradle task ./gradlew setupJdks we don't have the jdk files configured so we are not installing anything. Then if jdk 21 doesn't exist, gradle will complain during the configuration phase that no toolchain was found for java == 21 when it was configuring eg. javaCompiler.
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Ah, makes sense, of course we have to do it in two invocations.
I think I'd just prefer the option then to use all the JDKs rather than opting into specific ones.
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I wonder if this should just be something you can set via an environment variable instead, so we can just set export GRADLE_JDKS_INSTALL_ALL_JDKS=true in the excavator and not have to worry about it setting it on all the different commands.
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Also probably need a test for this behaviour, whatever it ends up being.
Before this PR
Atm we are generating jdk configurations for all jdks that are configured by gradle-jdks-latest. This means extra work if the repository only uses a subset of those JDKs. This is especially relevant in the context of circle VMs - we end up installing jdks that might not be used during circle ci jobs.
After this PR
Continuation for: #472.
gradle-baselineplugins.gq generateGradleJdkConfigs --includeAllJdksthat can generate all the jdk configuration files. Required by the excavator runs internally,==COMMIT_MSG==
Install only used JDKs
==COMMIT_MSG==
Possible downsides?