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Support pinning java-version as "latest"

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Add a `latest` alias for the `java-version` input that floats to the newest
available stable (GA) release. It is normalized to the SemVer wildcard at the
base-installer layer and always resolves from remote (like `check-latest: true`).

List-based distributions resolve it automatically via the existing newest-first
matching. Corretto selects its newest available major; Oracle and GraalVM look up
the newest GA major via the Adoptium API and request it, failing with an actionable
error if that major isn't published yet. The jdkfile distribution rejects `latest`.

Closes #832

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Bruno Borges
2026-07-09 15:20:59 -04:00
parent 548a822bee
commit 71ee2e9aa6
18 changed files with 441 additions and 19 deletions
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31
src/util.ts
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@@ -6,6 +6,7 @@ import * as cache from '@actions/cache';
import * as core from '@actions/core';
import * as tc from '@actions/tool-cache';
import * as httpm from '@actions/http-client';
import {
INPUT_JOB_STATUS,
DISTRIBUTIONS_ONLY_MAJOR_VERSION
@@ -382,3 +383,33 @@ export function renameWinArchive(javaArchivePath: string): string {
fs.renameSync(javaArchivePath, javaArchivePathRenamed);
return javaArchivePathRenamed;
}
interface IAdoptiumAvailableReleases {
most_recent_feature_release: number;
}
// Resolve the newest available stable/GA feature (major) release.
//
// Some distributions (e.g. Oracle, GraalVM) construct their download URLs from a
// concrete major version and don't expose an endpoint to list every available
// release, so a bare `latest` alias can't be resolved from their own metadata.
// The Adoptium (Temurin) API is used as a proxy for "what is the newest GA major
// version out there", which those distributions typically publish at the same time.
export async function getLatestMajorVersion(
http: httpm.HttpClient
): Promise<number> {
const availableReleasesUrl =
'https://api.adoptium.net/v3/info/available_releases';
const response =
await http.getJson<IAdoptiumAvailableReleases>(availableReleasesUrl);
const mostRecent = response.result?.most_recent_feature_release;
if (!mostRecent || Number.isNaN(Number(mostRecent))) {
throw new Error(
`Could not determine the latest available Java major version from ${availableReleasesUrl}`
);
}
return Number(mostRecent);
}