Fix Oracle JDK 21 e2e and warn on archived GA fallback (#1327)

Oracle no longer serves JDK 21 under /java/21/latest/, so a major-only
request falls back to the archived 21 GA build and reports version 21.
The e2e check required a concrete version for floating Oracle requests,
so the oracle 21 jobs failed.

Move floating Oracle e2e coverage to JDK 25 and keep a single oracle 21
job that exercises the archive fallback without the concrete-version
requirement. Warn when a major-only request falls back from /latest/ to
the archived GA release, since that build may lack security updates.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

.github/workflows/e2e-versions.yml

@@ -80,10 +80,14 @@ jobs:
             version: 25
           - distribution: oracle
             os: macos-15-intel
-            version: 21
+            version: 25
           - distribution: oracle
             os: windows-latest
-            version: 21
+            version: 25
+          - distribution: oracle
+            os: ubuntu-latest
+            version: 25
+          # Oracle no longer publishes JDK 21 under /latest, so a major-only request resolves to the archived GA build.
           - distribution: oracle
             os: ubuntu-latest
             version: 21
@@ -127,7 +131,7 @@ jobs:
           JAVA_VERSION: ${{ matrix.version }}
           JAVA_PATH: ${{ steps.setup-java.outputs.path }}
           SETUP_JAVA_VERSION: ${{ steps.setup-java.outputs.version }}
-          REQUIRE_CONCRETE_VERSION: ${{ (matrix.distribution == 'oracle' || matrix.distribution == 'graalvm') && !contains(matrix.version, '.') && !contains(matrix.version, '-ea') }}
+          REQUIRE_CONCRETE_VERSION: ${{ ((matrix.distribution == 'oracle' && matrix.version != 21) || matrix.distribution == 'graalvm') && !contains(matrix.version, '.') && !contains(matrix.version, '-ea') }}
         run: bash __tests__/verify-java.sh "$JAVA_VERSION" "$JAVA_PATH" "$SETUP_JAVA_VERSION" "$REQUIRE_CONCRETE_VERSION"
         shell: bash
 

__tests__/distributors/oracle-installer.test.ts

@@ -185,6 +185,19 @@ describe('findPackageForDownload', () => {
     expect(spyHttpClientGet).toHaveBeenCalledTimes(1);
   });
 
+  it('warns when a major-only request falls back to the archived GA release', async () => {
+    spyHttpClient = jest.spyOn(HttpClient.prototype, 'head');
+    spyHttpClient
+      .mockResolvedValueOnce({message: {statusCode: 404}})
+      .mockResolvedValueOnce({message: {statusCode: 200}});
+
+    await distribution['findPackageForDownload']('21');
+
+    expect(core.warning).toHaveBeenCalledWith(
+      'Oracle JDK 21 is no longer available from the latest endpoint. Falling back to its archived GA release, which may not include security updates.'
+    );
+  });
+
   it('always resolves major-only requests remotely', () => {
     expect(distribution['requiresRemoteResolution']()).toBe(true);
     const exactDistribution = new OracleDistribution({

dist/setup/182.index.js

@@ -82,6 +82,7 @@ class OracleDistribution extends _base_installer_js__WEBPACK_IMPORTED_MODULE_3__
             possibleUrls.push(`${ORACLE_DL_BASE}/${major}/latest/jdk-${major}_${platform}-${arch}_bin.${extension}`);
         }
         const floatingUrl = isOnlyMajorProvided ? possibleUrls[0] : undefined;
+        let latestUrlNotFound = false;
         possibleUrls.push(`${ORACLE_DL_BASE}/${major}/archive/jdk-${range}_${platform}-${arch}_bin.${extension}`);
         if (parseInt(major) < 17) {
             throw new Error('Oracle JDK is only supported for JDK 17 and later');
@@ -90,6 +91,9 @@ class OracleDistribution extends _base_installer_js__WEBPACK_IMPORTED_MODULE_3__
             const response = await this.http.head(url);
             if (response.message.statusCode === _actions_http_client__WEBPACK_IMPORTED_MODULE_5__/* .HttpCodes */ .Hv.OK) {
                 const floating = url === floatingUrl;
+                if (latestUrlNotFound) {
+                    _actions_core__WEBPACK_IMPORTED_MODULE_0__/* .warning */ .$e(`Oracle JDK ${major} is no longer available from the latest endpoint. Falling back to its archived GA release, which may not include security updates.`);
+                }
                 return {
                     url,
                     version: range,
@@ -100,6 +104,9 @@ class OracleDistribution extends _base_installer_js__WEBPACK_IMPORTED_MODULE_3__
                         : undefined
                 };
             }
+            if (url === floatingUrl) {
+                latestUrlNotFound = true;
+            }
             if (response.message.statusCode !== _actions_http_client__WEBPACK_IMPORTED_MODULE_5__/* .HttpCodes */ .Hv.NotFound) {
                 throw new Error(`Http request for Oracle JDK failed with status code: ${response.message.statusCode}`);
             }

src/distributions/oracle/installer.ts

@@ -109,6 +109,7 @@ export class OracleDistribution extends JavaBase {
       );
     }
     const floatingUrl = isOnlyMajorProvided ? possibleUrls[0] : undefined;
+    let latestUrlNotFound = false;
 
     possibleUrls.push(
       `${ORACLE_DL_BASE}/${major}/archive/jdk-${range}_${platform}-${arch}_bin.${extension}`
@@ -123,6 +124,11 @@ export class OracleDistribution extends JavaBase {
 
       if (response.message.statusCode === HttpCodes.OK) {
         const floating = url === floatingUrl;
+        if (latestUrlNotFound) {
+          core.warning(
+            `Oracle JDK ${major} is no longer available from the latest endpoint. Falling back to its archived GA release, which may not include security updates.`
+          );
+        }
         return {
           url,
           version: range,
@@ -134,6 +140,10 @@ export class OracleDistribution extends JavaBase {
         };
       }
 
+      if (url === floatingUrl) {
+        latestUrlNotFound = true;
+      }
+
       if (response.message.statusCode !== HttpCodes.NotFound) {
         throw new Error(
           `Http request for Oracle JDK failed with status code: ${response.message.statusCode}`