Add stable and oldstable aliases (#300)

.github/workflows/versions.yml

@@ -12,6 +12,57 @@ on:
     - cron: 0 0 * * *
 
 jobs:
+  stable:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Go Stable
+        uses: ./
+        with:
+          go-version: stable
+      - name: Verify Go
+        run: go version
+
+  oldstable:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Go oldStable
+        uses: ./
+        with:
+          go-version: oldstable
+      - name: Verify Go
+        run: go version
+  
+  aliases-arch:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        version: [stable, oldstable]
+        architecture: [x64, x32]
+        exclude:
+        - os: macos-latest
+          architecture: x32
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Go ${{ matrix.version }} ${{ matrix.architecture }}
+        uses: ./
+        with:
+          go-version: ${{ matrix.version }}
+          architecture: ${{ matrix.architecture }}
+      - name: Verify Go
+        run: go version
+
   local-cache:
     name: Setup local-cache version
     runs-on: ${{ matrix.os }}

README.md

@@ -16,6 +16,7 @@ The V3 edition of the action offers:
 - Proxy support
 - Check latest version
 - Caching packages dependencies
+- stable and oldstable aliases
 - Bug Fixes (including issues around version matching and semver)
 
 The action will first check the local cache for a version match. If a version is not found locally, it will pull it from the `main` branch of the [go-versions](https://github.com/actions/go-versions/blob/main/versions-manifest.json) repository. On miss or failure, it will fall back to downloading directly from [go dist](https://storage.googleapis.com/golang). To change the default behavior, please use the [check-latest input](#check-latest-version).
@@ -95,6 +96,33 @@ steps:
       check-latest: true
   - run: go run hello.go
 ```
+
+## Using stable/oldstable aliases
+
+If `stable` is provided, action will get the latest stable version from the [`go-versions`](https://github.com/actions/go-versions/blob/main/versions-manifest.json) repository manifest. 
+
+If `oldstable` is provided, when current release is 1.19.x, action will resolve version as 1.18.x, where x is the latest patch release.
+
+**Note:** using these aliases will result in same version as using corresponding minor release with `check-latest` input set to `true`
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: 'stable'
+  - run: go run hello.go
+```
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: 'oldstable'
+  - run: go run hello.go
+```
+
 ## Caching dependency files and build outputs:
 
 The action has a built-in functionality for caching and restoring go modules and build outputs. It uses [actions/cache](https://github.com/actions/cache) under the hood but requires less configuration settings. The `cache` input is optional, and caching is turned off by default.

__tests__/setup-go.test.ts

@@ -41,6 +41,7 @@ describe('setup-go', () => {
   let mkdirpSpy: jest.SpyInstance;
   let execSpy: jest.SpyInstance;
   let getManifestSpy: jest.SpyInstance;
+  let getAllVersionsSpy: jest.SpyInstance;
 
   beforeAll(async () => {
     process.env['GITHUB_ENV'] = ''; // Stub out Environment file functionality so we can verify it writes to standard out (toolkit is backwards compatible)
@@ -83,6 +84,7 @@ describe('setup-go', () => {
     cacheSpy = jest.spyOn(tc, 'cacheDir');
     getSpy = jest.spyOn(im, 'getVersionsDist');
     getManifestSpy = jest.spyOn(tc, 'getManifestFromRepo');
+    getAllVersionsSpy = jest.spyOn(im, 'getManifest');
 
     // io
     whichSpy = jest.spyOn(io, 'which');
@@ -700,7 +702,7 @@ describe('setup-go', () => {
 
       findSpy.mockImplementation(() => '');
       dlSpy.mockImplementation(async () => '/some/temp/path');
-      const toolPath = path.normalize('/cache/go/1.17.5/x64');
+      const toolPath = path.normalize('/cache/go/1.17.6/x64');
       extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
       cacheSpy.mockImplementation(async () => toolPath);
 
@@ -779,6 +781,7 @@ describe('setup-go', () => {
       getManifestSpy.mockImplementation(() => {
         throw new Error('Unable to download manifest');
       });
+      getAllVersionsSpy.mockImplementationOnce(() => undefined);
 
       dlSpy.mockImplementation(async () => '/some/temp/path');
       let toolPath = path.normalize('/cache/go/1.13.7/x64');
@@ -926,5 +929,32 @@ use .
         );
       }
     }, 100000);
+
+    it.each(['stable', 'oldstable'])(
+      'acquires latest go version with %s go-version input',
+      async (alias: string) => {
+        const arch = 'x64';
+        os.platform = 'darwin';
+        os.arch = arch;
+
+        inputs['go-version'] = alias;
+        inputs['architecture'] = os.arch;
+
+        // ... but not in the local cache
+        findSpy.mockImplementation(() => '');
+
+        dlSpy.mockImplementation(async () => '/some/temp/path');
+        let toolPath = path.normalize(`/cache/go/${alias}/${arch}`);
+        cacheSpy.mockImplementation(async () => toolPath);
+
+        await main.run();
+
+        const releaseIndex = alias === 'stable' ? 0 : 1;
+
+        expect(logSpy).toHaveBeenCalledWith(
+          `${alias} version resolved as ${goTestManifest[releaseIndex].version}`
+        );
+      }
+    );
   });
 });

dist/cache-save/index.js

@@ -60313,7 +60313,7 @@ var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (
 var __importStar = (this && this.__importStar) || function (mod) {
     if (mod && mod.__esModule) return mod;
     var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
     __setModuleDefault(result, mod);
     return result;
 };
@@ -60418,7 +60418,7 @@ var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (
 var __importStar = (this && this.__importStar) || function (mod) {
     if (mod && mod.__esModule) return mod;
     var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
     __setModuleDefault(result, mod);
     return result;
 };
@@ -60437,7 +60437,7 @@ const cache = __importStar(__nccwpck_require__(7799));
 const core = __importStar(__nccwpck_require__(2186));
 const exec = __importStar(__nccwpck_require__(1514));
 const package_managers_1 = __nccwpck_require__(6663);
-exports.getCommandOutput = (toolCommand) => __awaiter(void 0, void 0, void 0, function* () {
+const getCommandOutput = (toolCommand) => __awaiter(void 0, void 0, void 0, function* () {
     let { stdout, stderr, exitCode } = yield exec.getExecOutput(toolCommand, undefined, { ignoreReturnCode: true });
     if (exitCode) {
         stderr = !stderr.trim()
@@ -60447,14 +60447,16 @@ exports.getCommandOutput = (toolCommand) => __awaiter(void 0, void 0, void 0, fu
     }
     return stdout.trim();
 });
-exports.getPackageManagerInfo = (packageManager) => __awaiter(void 0, void 0, void 0, function* () {
+exports.getCommandOutput = getCommandOutput;
+const getPackageManagerInfo = (packageManager) => __awaiter(void 0, void 0, void 0, function* () {
     if (!package_managers_1.supportedPackageManagers[packageManager]) {
         throw new Error(`It's not possible to use ${packageManager}, please, check correctness of the package manager name spelling.`);
     }
     const obtainedPackageManager = package_managers_1.supportedPackageManagers[packageManager];
     return obtainedPackageManager;
 });
-exports.getCacheDirectoryPath = (packageManagerInfo) => __awaiter(void 0, void 0, void 0, function* () {
+exports.getPackageManagerInfo = getPackageManagerInfo;
+const getCacheDirectoryPath = (packageManagerInfo) => __awaiter(void 0, void 0, void 0, function* () {
     let pathList = yield Promise.all(packageManagerInfo.cacheFolderCommandList.map(command => exports.getCommandOutput(command)));
     const emptyPaths = pathList.filter(item => !item);
     if (emptyPaths.length) {
@@ -60462,6 +60464,7 @@ exports.getCacheDirectoryPath = (packageManagerInfo) => __awaiter(void 0, void 0
     }
     return pathList;
 });
+exports.getCacheDirectoryPath = getCacheDirectoryPath;
 function isGhes() {
     const ghUrl = new URL(process.env['GITHUB_SERVER_URL'] || 'https://github.com');
     return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';

dist/setup/index.js

@@ -63007,7 +63007,7 @@ var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (
 var __importStar = (this && this.__importStar) || function (mod) {
     if (mod && mod.__esModule) return mod;
     var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
     __setModuleDefault(result, mod);
     return result;
 };
@@ -63032,7 +63032,7 @@ const path_1 = __importDefault(__nccwpck_require__(1017));
 const fs_1 = __importDefault(__nccwpck_require__(7147));
 const constants_1 = __nccwpck_require__(9042);
 const cache_utils_1 = __nccwpck_require__(1678);
-exports.restoreCache = (versionSpec, packageManager, cacheDependencyPath) => __awaiter(void 0, void 0, void 0, function* () {
+const restoreCache = (versionSpec, packageManager, cacheDependencyPath) => __awaiter(void 0, void 0, void 0, function* () {
     const packageManagerInfo = yield cache_utils_1.getPackageManagerInfo(packageManager);
     const platform = process.env.RUNNER_OS;
     const cachePaths = yield cache_utils_1.getCacheDirectoryPath(packageManagerInfo);
@@ -63056,6 +63056,7 @@ exports.restoreCache = (versionSpec, packageManager, cacheDependencyPath) => __a
     core.saveState(constants_1.State.CacheMatchedKey, cacheKey);
     core.info(`Cache restored from key: ${cacheKey}`);
 });
+exports.restoreCache = restoreCache;
 const findDependencyFile = (packageManager) => {
     let dependencyFile = packageManager.dependencyFilePattern;
     const workspace = process.env.GITHUB_WORKSPACE;
@@ -63090,7 +63091,7 @@ var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (
 var __importStar = (this && this.__importStar) || function (mod) {
     if (mod && mod.__esModule) return mod;
     var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
     __setModuleDefault(result, mod);
     return result;
 };
@@ -63109,7 +63110,7 @@ const cache = __importStar(__nccwpck_require__(7799));
 const core = __importStar(__nccwpck_require__(2186));
 const exec = __importStar(__nccwpck_require__(1514));
 const package_managers_1 = __nccwpck_require__(6663);
-exports.getCommandOutput = (toolCommand) => __awaiter(void 0, void 0, void 0, function* () {
+const getCommandOutput = (toolCommand) => __awaiter(void 0, void 0, void 0, function* () {
     let { stdout, stderr, exitCode } = yield exec.getExecOutput(toolCommand, undefined, { ignoreReturnCode: true });
     if (exitCode) {
         stderr = !stderr.trim()
@@ -63119,14 +63120,16 @@ exports.getCommandOutput = (toolCommand) => __awaiter(void 0, void 0, void 0, fu
     }
     return stdout.trim();
 });
-exports.getPackageManagerInfo = (packageManager) => __awaiter(void 0, void 0, void 0, function* () {
+exports.getCommandOutput = getCommandOutput;
+const getPackageManagerInfo = (packageManager) => __awaiter(void 0, void 0, void 0, function* () {
     if (!package_managers_1.supportedPackageManagers[packageManager]) {
         throw new Error(`It's not possible to use ${packageManager}, please, check correctness of the package manager name spelling.`);
     }
     const obtainedPackageManager = package_managers_1.supportedPackageManagers[packageManager];
     return obtainedPackageManager;
 });
-exports.getCacheDirectoryPath = (packageManagerInfo) => __awaiter(void 0, void 0, void 0, function* () {
+exports.getPackageManagerInfo = getPackageManagerInfo;
+const getCacheDirectoryPath = (packageManagerInfo) => __awaiter(void 0, void 0, void 0, function* () {
     let pathList = yield Promise.all(packageManagerInfo.cacheFolderCommandList.map(command => exports.getCommandOutput(command)));
     const emptyPaths = pathList.filter(item => !item);
     if (emptyPaths.length) {
@@ -63134,6 +63137,7 @@ exports.getCacheDirectoryPath = (packageManagerInfo) => __awaiter(void 0, void 0
     }
     return pathList;
 });
+exports.getCacheDirectoryPath = getCacheDirectoryPath;
 function isGhes() {
     const ghUrl = new URL(process.env['GITHUB_SERVER_URL'] || 'https://github.com');
     return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';
@@ -63196,7 +63200,7 @@ var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (
 var __importStar = (this && this.__importStar) || function (mod) {
     if (mod && mod.__esModule) return mod;
     var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
     __setModuleDefault(result, mod);
     return result;
 };
@@ -63213,7 +63217,7 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
     return (mod && mod.__esModule) ? mod : { "default": mod };
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.parseGoVersionFile = exports.makeSemver = exports.getVersionsDist = exports.findMatch = exports.getInfoFromManifest = exports.extractGoArchive = exports.getGo = void 0;
+exports.resolveStableVersionInput = exports.parseGoVersionFile = exports.makeSemver = exports.getVersionsDist = exports.findMatch = exports.getInfoFromManifest = exports.getManifest = exports.extractGoArchive = exports.getGo = void 0;
 const tc = __importStar(__nccwpck_require__(7784));
 const core = __importStar(__nccwpck_require__(2186));
 const path = __importStar(__nccwpck_require__(1017));
@@ -63222,12 +63226,26 @@ const httpm = __importStar(__nccwpck_require__(6255));
 const sys = __importStar(__nccwpck_require__(4300));
 const fs_1 = __importDefault(__nccwpck_require__(7147));
 const os_1 = __importDefault(__nccwpck_require__(2037));
+const utils_1 = __nccwpck_require__(1314);
 function getGo(versionSpec, checkLatest, auth, arch = os_1.default.arch()) {
     return __awaiter(this, void 0, void 0, function* () {
+        let manifest;
         let osPlat = os_1.default.platform();
+        if (versionSpec === utils_1.StableReleaseAlias.Stable ||
+            versionSpec === utils_1.StableReleaseAlias.OldStable) {
+            manifest = yield getManifest(auth);
+            let stableVersion = yield resolveStableVersionInput(versionSpec, arch, osPlat, manifest);
+            if (!stableVersion) {
+                stableVersion = yield resolveStableVersionDist(versionSpec, arch);
+                if (!stableVersion) {
+                    throw new Error(`Unable to find Go version '${versionSpec}' for platform ${osPlat} and architecture ${arch}.`);
+                }
+            }
+            versionSpec = stableVersion;
+        }
         if (checkLatest) {
             core.info('Attempting to resolve the latest version from the manifest...');
-            const resolvedVersion = yield resolveVersionFromManifest(versionSpec, true, auth, arch);
+            const resolvedVersion = yield resolveVersionFromManifest(versionSpec, true, auth, arch, manifest);
             if (resolvedVersion) {
                 versionSpec = resolvedVersion;
                 core.info(`Resolved as '${versionSpec}'`);
@@ -63251,7 +63269,7 @@ function getGo(versionSpec, checkLatest, auth, arch = os_1.default.arch()) {
         // Try download from internal distribution (popular versions only)
         //
         try {
-            info = yield getInfoFromManifest(versionSpec, true, auth, arch);
+            info = yield getInfoFromManifest(versionSpec, true, auth, arch, manifest);
             if (info) {
                 downloadPath = yield installGoVersion(info, auth, arch);
             }
@@ -63290,10 +63308,10 @@ function getGo(versionSpec, checkLatest, auth, arch = os_1.default.arch()) {
     });
 }
 exports.getGo = getGo;
-function resolveVersionFromManifest(versionSpec, stable, auth, arch) {
+function resolveVersionFromManifest(versionSpec, stable, auth, arch, manifest) {
     return __awaiter(this, void 0, void 0, function* () {
         try {
-            const info = yield getInfoFromManifest(versionSpec, stable, auth, arch);
+            const info = yield getInfoFromManifest(versionSpec, stable, auth, arch, manifest);
             return info === null || info === void 0 ? void 0 : info.resolvedVersion;
         }
         catch (err) {
@@ -63336,12 +63354,21 @@ function extractGoArchive(archivePath) {
     });
 }
 exports.extractGoArchive = extractGoArchive;
-function getInfoFromManifest(versionSpec, stable, auth, arch = os_1.default.arch()) {
+function getManifest(auth) {
+    return __awaiter(this, void 0, void 0, function* () {
+        return tc.getManifestFromRepo('actions', 'go-versions', auth, 'main');
+    });
+}
+exports.getManifest = getManifest;
+function getInfoFromManifest(versionSpec, stable, auth, arch = os_1.default.arch(), manifest) {
     return __awaiter(this, void 0, void 0, function* () {
         let info = null;
-        const releases = yield tc.getManifestFromRepo('actions', 'go-versions', auth, 'main');
+        if (!manifest) {
+            core.debug('No manifest cached');
+            manifest = yield getManifest(auth);
+        }
         core.info(`matching ${versionSpec}...`);
-        const rel = yield tc.findFromManifest(versionSpec, stable, releases, arch);
+        const rel = yield tc.findFromManifest(versionSpec, stable, manifest, arch);
         if (rel && rel.files.length > 0) {
             info = {};
             info.type = 'manifest';
@@ -63452,6 +63479,47 @@ function parseGoVersionFile(versionFilePath) {
     return contents.trim();
 }
 exports.parseGoVersionFile = parseGoVersionFile;
+function resolveStableVersionDist(versionSpec, arch) {
+    return __awaiter(this, void 0, void 0, function* () {
+        let archFilter = sys.getArch(arch);
+        let platFilter = sys.getPlatform();
+        const dlUrl = 'https://golang.org/dl/?mode=json&include=all';
+        let candidates = yield module.exports.getVersionsDist(dlUrl);
+        if (!candidates) {
+            throw new Error(`golang download url did not return results`);
+        }
+        const fixedCandidates = candidates.map(item => {
+            return Object.assign(Object.assign({}, item), { version: makeSemver(item.version) });
+        });
+        const stableVersion = yield resolveStableVersionInput(versionSpec, archFilter, platFilter, fixedCandidates);
+        return stableVersion;
+    });
+}
+function resolveStableVersionInput(versionSpec, arch, platform, manifest) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const releases = manifest
+            .map(item => {
+            const index = item.files.findIndex(item => item.arch === arch && item.filename.includes(platform));
+            if (index === -1) {
+                return '';
+            }
+            return item.version;
+        })
+            .filter(item => !!item && !semver.prerelease(item));
+        if (versionSpec === utils_1.StableReleaseAlias.Stable) {
+            core.info(`stable version resolved as ${releases[0]}`);
+            return releases[0];
+        }
+        else {
+            const versions = releases.map(release => `${semver.major(release)}.${semver.minor(release)}`);
+            const uniqueVersions = Array.from(new Set(versions));
+            const oldstableVersion = releases.find(item => item.startsWith(uniqueVersions[1]));
+            core.info(`oldstable version resolved as ${oldstableVersion}`);
+            return oldstableVersion;
+        }
+    });
+}
+exports.resolveStableVersionInput = resolveStableVersionInput;
 
 
 /***/ }),
@@ -63476,7 +63544,7 @@ var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (
 var __importStar = (this && this.__importStar) || function (mod) {
     if (mod && mod.__esModule) return mod;
     var result = {};
-    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
     __setModuleDefault(result, mod);
     return result;
 };
@@ -63523,9 +63591,10 @@ function run() {
                 let auth = !token ? undefined : `token ${token}`;
                 const checkLatest = core.getBooleanInput('check-latest');
                 const installDir = yield installer.getGo(versionSpec, checkLatest, auth, arch);
+                const installDirVersion = path_1.default.basename(path_1.default.dirname(installDir));
                 core.addPath(path_1.default.join(installDir, 'bin'));
                 core.info('Added go to the path');
-                const version = installer.makeSemver(versionSpec);
+                const version = installer.makeSemver(installDirVersion);
                 // Go versions less than 1.9 require GOROOT to be set
                 if (semver.lt(version, '1.9.0')) {
                     core.info('Setting GOROOT for Go version < 1.9');
@@ -63678,6 +63747,22 @@ function getArch(arch) {
 exports.getArch = getArch;
 
 
+/***/ }),
+
+/***/ 1314:
+/***/ ((__unused_webpack_module, exports) => {
+
+"use strict";
+
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.StableReleaseAlias = void 0;
+var StableReleaseAlias;
+(function (StableReleaseAlias) {
+    StableReleaseAlias["Stable"] = "stable";
+    StableReleaseAlias["OldStable"] = "oldstable";
+})(StableReleaseAlias = exports.StableReleaseAlias || (exports.StableReleaseAlias = {}));
+
+
 /***/ }),
 
 /***/ 2877:

package-lock.json

@@ -28,7 +28,7 @@
         "nock": "^10.0.6",
         "prettier": "^1.17.1",
         "ts-jest": "^27.0.5",
-        "typescript": "^3.8.3"
+        "typescript": "^4.3.3"
       }
     },
     "node_modules/@actions/cache": {
@@ -4694,9 +4694,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "3.9.10",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
-      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.3.tgz",
+      "integrity": "sha512-rUvLW0WtF7PF2b9yenwWUi9Da9euvDRhmH7BLyBG4DCFfOJ850LGNknmRpp8Z8kXNUPObdZQEfKOiHtXuQHHKA==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -8565,9 +8565,9 @@
       }
     },
     "typescript": {
-      "version": "3.9.10",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
-      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.3.tgz",
+      "integrity": "sha512-rUvLW0WtF7PF2b9yenwWUi9Da9euvDRhmH7BLyBG4DCFfOJ850LGNknmRpp8Z8kXNUPObdZQEfKOiHtXuQHHKA==",
       "dev": true
     },
     "universalify": {

package.json

@@ -42,6 +42,6 @@
     "nock": "^10.0.6",
     "prettier": "^1.17.1",
     "ts-jest": "^27.0.5",
-    "typescript": "^3.8.3"
+    "typescript": "^4.3.3"
   }
 }

src/installer.ts

@@ -6,6 +6,7 @@ import * as httpm from '@actions/http-client';
 import * as sys from './system';
 import fs from 'fs';
 import os from 'os';
+import {StableReleaseAlias} from './utils';
 
 type InstallationType = 'dist' | 'manifest';
 
@@ -35,15 +36,41 @@ export async function getGo(
   auth: string | undefined,
   arch = os.arch()
 ) {
+  let manifest: tc.IToolRelease[] | undefined;
   let osPlat: string = os.platform();
 
+  if (
+    versionSpec === StableReleaseAlias.Stable ||
+    versionSpec === StableReleaseAlias.OldStable
+  ) {
+    manifest = await getManifest(auth);
+    let stableVersion = await resolveStableVersionInput(
+      versionSpec,
+      arch,
+      osPlat,
+      manifest
+    );
+
+    if (!stableVersion) {
+      stableVersion = await resolveStableVersionDist(versionSpec, arch);
+      if (!stableVersion) {
+        throw new Error(
+          `Unable to find Go version '${versionSpec}' for platform ${osPlat} and architecture ${arch}.`
+        );
+      }
+    }
+
+    versionSpec = stableVersion;
+  }
+
   if (checkLatest) {
     core.info('Attempting to resolve the latest version from the manifest...');
     const resolvedVersion = await resolveVersionFromManifest(
       versionSpec,
       true,
       auth,
-      arch
+      arch,
+      manifest
     );
     if (resolvedVersion) {
       versionSpec = resolvedVersion;
@@ -69,7 +96,7 @@ export async function getGo(
   // Try download from internal distribution (popular versions only)
   //
   try {
-    info = await getInfoFromManifest(versionSpec, true, auth, arch);
+    info = await getInfoFromManifest(versionSpec, true, auth, arch, manifest);
     if (info) {
       downloadPath = await installGoVersion(info, auth, arch);
     } else {
@@ -118,10 +145,17 @@ async function resolveVersionFromManifest(
   versionSpec: string,
   stable: boolean,
   auth: string | undefined,
-  arch: string
+  arch: string,
+  manifest: tc.IToolRelease[] | undefined
 ): Promise<string | undefined> {
   try {
-    const info = await getInfoFromManifest(versionSpec, stable, auth, arch);
+    const info = await getInfoFromManifest(
+      versionSpec,
+      stable,
+      auth,
+      arch,
+      manifest
+    );
     return info?.resolvedVersion;
   } catch (err) {
     core.info('Unable to resolve a version from the manifest...');
@@ -174,21 +208,26 @@ export async function extractGoArchive(archivePath: string): Promise<string> {
   return extPath;
 }
 
+export async function getManifest(auth: string | undefined) {
+  return tc.getManifestFromRepo('actions', 'go-versions', auth, 'main');
+}
+
 export async function getInfoFromManifest(
   versionSpec: string,
   stable: boolean,
   auth: string | undefined,
-  arch = os.arch()
+  arch = os.arch(),
+  manifest?: tc.IToolRelease[] | undefined
 ): Promise<IGoVersionInfo | null> {
   let info: IGoVersionInfo | null = null;
-  const releases = await tc.getManifestFromRepo(
-    'actions',
-    'go-versions',
-    auth,
-    'main'
-  );
+  if (!manifest) {
+    core.debug('No manifest cached');
+    manifest = await getManifest(auth);
+  }
+
   core.info(`matching ${versionSpec}...`);
-  const rel = await tc.findFromManifest(versionSpec, stable, releases, arch);
+
+  const rel = await tc.findFromManifest(versionSpec, stable, manifest, arch);
 
   if (rel && rel.files.length > 0) {
     info = <IGoVersionInfo>{};
@@ -326,3 +365,69 @@ export function parseGoVersionFile(versionFilePath: string): string {
 
   return contents.trim();
 }
+
+async function resolveStableVersionDist(versionSpec: string, arch: string) {
+  let archFilter = sys.getArch(arch);
+  let platFilter = sys.getPlatform();
+  const dlUrl: string = 'https://golang.org/dl/?mode=json&include=all';
+  let candidates: IGoVersion[] | null = await module.exports.getVersionsDist(
+    dlUrl
+  );
+  if (!candidates) {
+    throw new Error(`golang download url did not return results`);
+  }
+
+  const fixedCandidates = candidates.map(item => {
+    return {
+      ...item,
+      version: makeSemver(item.version)
+    };
+  });
+
+  const stableVersion = await resolveStableVersionInput(
+    versionSpec,
+    archFilter,
+    platFilter,
+    fixedCandidates
+  );
+
+  return stableVersion;
+}
+
+export async function resolveStableVersionInput(
+  versionSpec: string,
+  arch: string,
+  platform: string,
+  manifest: tc.IToolRelease[] | IGoVersion[]
+) {
+  const releases = manifest
+    .map(item => {
+      const index = item.files.findIndex(
+        item => item.arch === arch && item.filename.includes(platform)
+      );
+      if (index === -1) {
+        return '';
+      }
+      return item.version;
+    })
+    .filter(item => !!item && !semver.prerelease(item));
+
+  if (versionSpec === StableReleaseAlias.Stable) {
+    core.info(`stable version resolved as ${releases[0]}`);
+
+    return releases[0];
+  } else {
+    const versions = releases.map(
+      release => `${semver.major(release)}.${semver.minor(release)}`
+    );
+    const uniqueVersions = Array.from(new Set(versions));
+
+    const oldstableVersion = releases.find(item =>
+      item.startsWith(uniqueVersions[1])
+    );
+
+    core.info(`oldstable version resolved as ${oldstableVersion}`);
+
+    return oldstableVersion;
+  }
+}

src/main.ts

@@ -4,7 +4,7 @@ import * as installer from './installer';
 import * as semver from 'semver';
 import path from 'path';
 import {restoreCache} from './cache-restore';
-import {isGhes, isCacheFeatureAvailable} from './cache-utils';
+import {isCacheFeatureAvailable} from './cache-utils';
 import cp from 'child_process';
 import fs from 'fs';
 import os from 'os';
@@ -31,6 +31,7 @@ export async function run() {
       let auth = !token ? undefined : `token ${token}`;
 
       const checkLatest = core.getBooleanInput('check-latest');
+
       const installDir = await installer.getGo(
         versionSpec,
         checkLatest,
@@ -38,10 +39,12 @@ export async function run() {
         arch
       );
 
+      const installDirVersion = path.basename(path.dirname(installDir));
+
       core.addPath(path.join(installDir, 'bin'));
       core.info('Added go to the path');
 
-      const version = installer.makeSemver(versionSpec);
+      const version = installer.makeSemver(installDirVersion);
       // Go versions less than 1.9 require GOROOT to be set
       if (semver.lt(version, '1.9.0')) {
         core.info('Setting GOROOT for Go version < 1.9');

src/utils.ts

@@ -0,0 +1,4 @@
+export enum StableReleaseAlias {
+  Stable = 'stable',
+  OldStable = 'oldstable'
+}