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Cache Gradle wrapper distribution separately from the dependency cache (#1098)

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The Gradle wrapper distribution (~/.gradle/wrapper) only depends on
gradle-wrapper.properties, which changes rarely, but it was previously
cached in the same entry as ~/.gradle/caches, keyed on volatile
**/*.gradle* files with no restoreKeys (issue #269). Every dependency
change therefore re-downloaded the wrapper.

Move ~/.gradle/wrapper into a dedicated `gradle-wrapper` additional
cache keyed only on **/gradle-wrapper.properties, reusing the
additionalCaches infrastructure introduced for the Maven wrapper fix.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Bruno Borges
2026-07-09 21:00:52 -04:00
committed by GitHub
parent bc6a9b1b01
commit ac3a4a8d4b
4 changed files with 117 additions and 12 deletions
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81
__tests__/cache.test.ts
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@@ -316,6 +316,43 @@ describe('dependency cache', () => {
expect(spyWarning).not.toHaveBeenCalled();
expect(spyInfo).toHaveBeenCalledWith('gradle cache is not found');
});
it('restores the gradle wrapper distribution cache independently of the main cache', async () => {
createFile(join(workspace, 'build.gradle'));
await restore('gradle', '');
// Main dependency cache no longer carries the wrapper path.
expect(spyCacheRestore).toHaveBeenCalledWith(
[join(os.homedir(), '.gradle', 'caches')],
expect.any(String)
);
// Wrapper distribution is restored on its own, keyed only on the
// wrapper properties file.
expect(spyCacheRestore).toHaveBeenCalledWith(
[join(os.homedir(), '.gradle', 'wrapper')],
expect.stringContaining('setup-java-')
);
expect(spyGlobHashFiles).toHaveBeenCalledWith(
'**/gradle-wrapper.properties'
);
});
it('skips the gradle wrapper cache when no wrapper properties exist', async () => {
createFile(join(workspace, 'build.gradle'));
spyGlobHashFiles.mockImplementation((pattern: string) =>
Promise.resolve(
pattern === '**/gradle-wrapper.properties' ? '' : 'hash-stub'
)
);
await restore('gradle', '');
// Only the main dependency cache is restored; the wrapper cache path is
// never touched because the project does not use the gradle wrapper.
expect(spyCacheRestore).toHaveBeenCalledTimes(1);
expect(spyCacheRestore).toHaveBeenCalledWith(
[join(os.homedir(), '.gradle', 'caches')],
expect.any(String)
);
expect(spyWarning).not.toHaveBeenCalled();
});
});
describe('for sbt', () => {
it('throws error if no build.sbt found', async () => {
@@ -587,6 +624,50 @@ describe('dependency cache', () => {
expect.stringMatching(/^Cache saved with the key:.*/)
);
});
it('saves the gradle wrapper distribution cache under its own key', async () => {
createFile(join(workspace, 'build.gradle'));
(core.getState as jest.Mock<any>).mockImplementation((name: any) => {
switch (name) {
case 'cache-primary-key':
return 'setup-java-cache-primary-key';
case 'cache-matched-key':
return 'setup-java-cache-matched-key';
case 'cache-primary-key-gradle-wrapper':
return 'setup-java-gradle-wrapper-key';
default:
return '';
}
});
await save('gradle');
expect(spyCacheSave).toHaveBeenCalledWith(
[join(os.homedir(), '.gradle', 'wrapper')],
'setup-java-gradle-wrapper-key'
);
expect(spyWarning).not.toHaveBeenCalled();
});
it('does not save the gradle wrapper cache on an exact wrapper hit', async () => {
createFile(join(workspace, 'build.gradle'));
(core.getState as jest.Mock<any>).mockImplementation((name: any) => {
switch (name) {
case 'cache-primary-key':
return 'setup-java-cache-primary-key';
case 'cache-matched-key':
return 'setup-java-cache-matched-key';
case 'cache-primary-key-gradle-wrapper':
case 'cache-matched-key-gradle-wrapper':
return 'setup-java-gradle-wrapper-key';
default:
return '';
}
});
await save('gradle');
expect(spyCacheSave).not.toHaveBeenCalledWith(
[join(os.homedir(), '.gradle', 'wrapper')],
expect.any(String)
);
});
});
describe('for sbt', () => {
it('uploads cache even if no build.sbt found', async () => {