Revert compression changes related to windows but keep version logging (#1049)

* Revert compression changes related to windows
 due to symlink issues

* Added tips and workarounds for cross os

README.md

@@ -28,7 +28,6 @@ See ["Caching dependencies to speed up workflows"](https://docs.github.com/en/ac
 * Fix zstd not working for windows on gnu tar in issues.
 * Allowing users to provide a custom timeout as input for aborting download of a cache segment using an environment variable `SEGMENT_DOWNLOAD_TIMEOUT_MINS`. Default is 60 minutes.
 * Two new actions available for granular control over caches - [restore](restore/action.yml) and [save](save/action.yml)
-* Add support for cross os caching. For example, a cache saved on windows can be restored on ubuntu and vice versa.
 
 Refer [here](https://github.com/actions/cache/blob/v2/README.md) for previous versions
 
@@ -245,6 +244,7 @@ Following are some of the known practices/workarounds which community has used t
 - [Cache segment restore timeout](./tips-and-workarounds.md#cache-segment-restore-timeout)
 - [Update a cache](./tips-and-workarounds.md#update-a-cache)
 - [Use cache across feature branches](./tips-and-workarounds.md#use-cache-across-feature-branches)
+- [Improving cache restore performance on Windows/Using cross-os caching](./tips-and-workarounds.md#improving-cache-restore-performance-on-windows-using-cross-os-caching)
 - [Force deletion of caches overriding default cache eviction policy](./tips-and-workarounds.md#force-deletion-of-caches-overriding-default-cache-eviction-policy)
 
 #### Windows environment variables

RELEASES.md

@@ -60,3 +60,6 @@
 - Update `@actions/cache` on windows to use gnu tar and zstd by default and fallback to bsdtar and zstd if gnu tar is not available. ([issue](https://github.com/actions/cache/issues/984))
 - Added support for fallback to gzip to restore old caches on windows.
 - Added logs for cache version in case of a cache miss.
+
+### 3.2.2
+- Reverted the changes made in 3.2.1 to use gnu tar and zstd by default on windows.

dist/restore-only/index.js

@@ -1177,6 +1177,10 @@ function getVersion(app) {
 // Use zstandard if possible to maximize cache performance
 function getCompressionMethod() {
     return __awaiter(this, void 0, void 0, function* () {
+        if (process.platform === 'win32' && !(yield isGnuTarInstalled())) {
+            // Disable zstd due to bug https://github.com/actions/cache/issues/301
+            return constants_1.CompressionMethod.Gzip;
+        }
         const versionOutput = yield getVersion('zstd');
         const version = semver.clean(versionOutput);
         if (!versionOutput.toLowerCase().includes('zstd command line interface')) {
@@ -1200,16 +1204,13 @@ function getCacheFileName(compressionMethod) {
         : constants_1.CacheFilename.Zstd;
 }
 exports.getCacheFileName = getCacheFileName;
-function getGnuTarPathOnWindows() {
+function isGnuTarInstalled() {
     return __awaiter(this, void 0, void 0, function* () {
-        if (fs.existsSync(constants_1.GnuTarPathOnWindows)) {
-            return constants_1.GnuTarPathOnWindows;
-        }
         const versionOutput = yield getVersion('tar');
-        return versionOutput.toLowerCase().includes('gnu tar') ? io.which('tar') : '';
+        return versionOutput.toLowerCase().includes('gnu tar');
     });
 }
-exports.getGnuTarPathOnWindows = getGnuTarPathOnWindows;
+exports.isGnuTarInstalled = isGnuTarInstalled;
 function assertDefined(name, value) {
     if (value === undefined) {
         throw Error(`Expected ${name} but value was undefiend`);
@@ -3431,7 +3432,6 @@ function getCacheEntry(keys, paths, options) {
         const version = getCacheVersion(paths, options === null || options === void 0 ? void 0 : options.compressionMethod);
         const resource = `cache?keys=${encodeURIComponent(keys.join(','))}&version=${version}`;
         const response = yield requestUtils_1.retryTypedResponse('getCacheEntry', () => __awaiter(this, void 0, void 0, function* () { return httpClient.getJson(getCacheApiUrl(resource)); }));
-        // Cache not found
         if (response.statusCode === 204) {
             // List cache for primary key only if cache miss occurs
             if (core.isDebug()) {
@@ -3445,7 +3445,6 @@ function getCacheEntry(keys, paths, options) {
         const cacheResult = response.result;
         const cacheDownloadUrl = cacheResult === null || cacheResult === void 0 ? void 0 : cacheResult.archiveLocation;
         if (!cacheDownloadUrl) {
-            // Cache achiveLocation not found. This should never happen, and hence bail out.
             throw new Error('Cache not found.');
         }
         core.setSecret(cacheDownloadUrl);
@@ -38223,19 +38222,21 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const constants_1 = __webpack_require__(931);
 const IS_WINDOWS = process.platform === 'win32';
-// Returns tar path and type: BSD or GNU
+function getTarPath(args, compressionMethod) {
-function getTarPath() {
     return __awaiter(this, void 0, void 0, function* () {
         switch (process.platform) {
             case 'win32': {
-                const gnuTar = yield utils.getGnuTarPathOnWindows();
+                const systemTar = `${process.env['windir']}\\System32\\tar.exe`;
-                const systemTar = constants_1.SystemTarPathOnWindows;
+                if (compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                if (gnuTar) {
+                    // We only use zstandard compression on windows when gnu tar is installed due to
-                    // Use GNUtar as default on windows
+                    // a bug with compressing large files with bsdtar + zstd
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--force-local');
                 }
                 else if (fs_1.existsSync(systemTar)) {
-                    return { path: systemTar, type: constants_1.ArchiveToolType.BSD };
+                    return systemTar;
+                }
+                else if (yield utils.isGnuTarInstalled()) {
+                    args.push('--force-local');
                 }
                 break;
             }
@@ -38243,92 +38244,25 @@ function getTarPath() {
                 const gnuTar = yield io.which('gtar', false);
                 if (gnuTar) {
                     // fix permission denied errors when extracting BSD tar archive with GNU tar - https://github.com/actions/cache/issues/527
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--delay-directory-restore');
-                }
+                    return gnuTar;
-                else {
-                    return {
-                        path: yield io.which('tar', true),
-                        type: constants_1.ArchiveToolType.BSD
-                    };
                 }
+                break;
             }
             default:
                 break;
         }
-        // Default assumption is GNU tar is present in path
+        return yield io.which('tar', true);
-        return {
-            path: yield io.which('tar', true),
-            type: constants_1.ArchiveToolType.GNU
-        };
     });
 }
-// Return arguments for tar as per tarPath, compressionMethod, method type and os
+function execTar(args, compressionMethod, cwd) {
-function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
     return __awaiter(this, void 0, void 0, function* () {
-        const args = [`"${tarPath.path}"`];
+        try {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
+            yield exec_1.exec(`"${yield getTarPath(args, compressionMethod)}"`, args, { cwd });
-        const tarFile = 'cache.tar';
-        const workingDirectory = getWorkingDirectory();
-        // Speficic args for BSD tar on windows for workaround
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        // Method specific args
-        switch (type) {
-            case 'create':
-                args.push('--posix', '-cf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--exclude', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--files-from', constants_1.ManifestFilename);
-                break;
-            case 'extract':
-                args.push('-xf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'));
-                break;
-            case 'list':
-                args.push('-tf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P');
-                break;
         }
-        // Platform specific args
+        catch (error) {
-        if (tarPath.type === constants_1.ArchiveToolType.GNU) {
+            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            switch (process.platform) {
-                case 'win32':
-                    args.push('--force-local');
-                    break;
-                case 'darwin':
-                    args.push('--delay-directory-restore');
-                    break;
-            }
         }
-        return args;
-    });
-}
-// Returns commands to run tar and compression program
-function getCommands(compressionMethod, type, archivePath = '') {
-    return __awaiter(this, void 0, void 0, function* () {
-        let args;
-        const tarPath = yield getTarPath();
-        const tarArgs = yield getTarArgs(tarPath, compressionMethod, type, archivePath);
-        const compressionArgs = type !== 'create'
-            ? yield getDecompressionProgram(tarPath, compressionMethod, archivePath)
-            : yield getCompressionProgram(tarPath, compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        if (BSD_TAR_ZSTD && type !== 'create') {
-            args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')];
-        }
-        else {
-            args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')];
-        }
-        if (BSD_TAR_ZSTD) {
-            return args;
-        }
-        return [args.join(' ')];
     });
 }
 function getWorkingDirectory() {
@@ -38336,116 +38270,91 @@ function getWorkingDirectory() {
     return (_a = process.env['GITHUB_WORKSPACE']) !== null && _a !== void 0 ? _a : process.cwd();
 }
 // Common function for extractTar and listTar to get the compression method
-function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
+function getCompressionProgram(compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
+    // -d: Decompress.
-        // -d: Decompress.
+    // unzstd is equivalent to 'zstd -d'
-        // unzstd is equivalent to 'zstd -d'
+    // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+    // Using 30 here because we also support 32-bit self-hosted runners.
-        // Using 30 here because we also support 32-bit self-hosted runners.
+    switch (compressionMethod) {
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
+        case constants_1.CompressionMethod.Zstd:
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
+            return [
-            IS_WINDOWS;
+                '--use-compress-program',
-        switch (compressionMethod) {
+                IS_WINDOWS ? 'zstd -d --long=30' : 'unzstd --long=30'
-            case constants_1.CompressionMethod.Zstd:
+            ];
-                return BSD_TAR_ZSTD
+        case constants_1.CompressionMethod.ZstdWithoutLong:
-                    ? [
+            return ['--use-compress-program', IS_WINDOWS ? 'zstd -d' : 'unzstd'];
-                        'zstd -d --long=30 --force -o',
+        default:
-                        constants_1.TarFilename,
+            return ['-z'];
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+    }
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -d --long=30"' : 'unzstd --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -d --force -o',
-                        constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd'];
-            default:
-                return ['-z'];
-        }
-    });
 }
-// Used for creating the archive
-// -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
-// zstdmt is equivalent to 'zstd -T0'
-// --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-// Using 30 here because we also support 32-bit self-hosted runners.
-// Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
-function getCompressionProgram(tarPath, compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        switch (compressionMethod) {
-            case constants_1.CompressionMethod.Zstd:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --long=30 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -T0 --long=30"' : 'zstdmt --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -T0"' : 'zstdmt'];
-            default:
-                return ['-z'];
-        }
-    });
-}
-// Executes all commands as separate processes
-function execCommands(commands, cwd) {
-    return __awaiter(this, void 0, void 0, function* () {
-        for (const command of commands) {
-            try {
-                yield exec_1.exec(command, undefined, { cwd });
-            }
-            catch (error) {
-                throw new Error(`${command.split(' ')[0]} failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            }
-        }
-    });
-}
-// List the contents of a tar
 function listTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
-        const commands = yield getCommands(compressionMethod, 'list', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-tf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P'
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.listTar = listTar;
-// Extract a tar
 function extractTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Create directory to extract tar into
         const workingDirectory = getWorkingDirectory();
         yield io.mkdirP(workingDirectory);
-        const commands = yield getCommands(compressionMethod, 'extract', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-xf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.extractTar = extractTar;
-// Create a tar
 function createTar(archiveFolder, sourceDirectories, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Write source directories to manifest.txt to avoid command length limits
-        fs_1.writeFileSync(path.join(archiveFolder, constants_1.ManifestFilename), sourceDirectories.join('\n'));
+        const manifestFilename = 'manifest.txt';
-        const commands = yield getCommands(compressionMethod, 'create');
+        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        yield execCommands(commands, archiveFolder);
+        fs_1.writeFileSync(path.join(archiveFolder, manifestFilename), sourceDirectories.join('\n'));
+        const workingDirectory = getWorkingDirectory();
+        // -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
+        // zstdmt is equivalent to 'zstd -T0'
+        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+        // Using 30 here because we also support 32-bit self-hosted runners.
+        // Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
+        function getCompressionProgram() {
+            switch (compressionMethod) {
+                case constants_1.CompressionMethod.Zstd:
+                    return [
+                        '--use-compress-program',
+                        IS_WINDOWS ? 'zstd -T0 --long=30' : 'zstdmt --long=30'
+                    ];
+                case constants_1.CompressionMethod.ZstdWithoutLong:
+                    return ['--use-compress-program', IS_WINDOWS ? 'zstd -T0' : 'zstdmt'];
+                default:
+                    return ['-z'];
+            }
+        }
+        const args = [
+            '--posix',
+            ...getCompressionProgram(),
+            '-cf',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--exclude',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--files-from',
+            manifestFilename
+        ];
+        yield execTar(args, compressionMethod, archiveFolder);
     });
 }
 exports.createTar = createTar;
@@ -47195,7 +47104,6 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const cacheHttpClient = __importStar(__webpack_require__(114));
 const tar_1 = __webpack_require__(434);
-const constants_1 = __webpack_require__(931);
 class ValidationError extends Error {
     constructor(message) {
         super(message);
@@ -47257,31 +47165,16 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
         for (const key of keys) {
             checkKey(key);
         }
-        let cacheEntry;
+        const compressionMethod = yield utils.getCompressionMethod();
-        let compressionMethod = yield utils.getCompressionMethod();
         let archivePath = '';
         try {
             // path are needed to compute version
-            cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
+            const cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
                 compressionMethod
             });
             if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                // This is to support the old cache entry created by gzip on windows.
+                // Cache not found
-                if (process.platform === 'win32' &&
+                return undefined;
-                    compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                    compressionMethod = constants_1.CompressionMethod.Gzip;
-                    cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
-                        compressionMethod
-                    });
-                    if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                        return undefined;
-                    }
-                    core.info("Couldn't find cache entry with zstd compression, falling back to gzip compression.");
-                }
-                else {
-                    // Cache not found
-                    return undefined;
-                }
             }
             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
             core.debug(`Archive Path: ${archivePath}`);
@@ -53362,11 +53255,6 @@ var CompressionMethod;
     CompressionMethod["ZstdWithoutLong"] = "zstd-without-long";
     CompressionMethod["Zstd"] = "zstd";
 })(CompressionMethod = exports.CompressionMethod || (exports.CompressionMethod = {}));
-var ArchiveToolType;
-(function (ArchiveToolType) {
-    ArchiveToolType["GNU"] = "gnu";
-    ArchiveToolType["BSD"] = "bsd";
-})(ArchiveToolType = exports.ArchiveToolType || (exports.ArchiveToolType = {}));
 // The default number of retry attempts.
 exports.DefaultRetryAttempts = 2;
 // The default delay in milliseconds between retry attempts.
@@ -53375,12 +53263,6 @@ exports.DefaultRetryDelay = 5000;
 // over the socket during this period, the socket is destroyed and the download
 // is aborted.
 exports.SocketTimeout = 5000;
-// The default path of GNUtar on hosted Windows runners
-exports.GnuTarPathOnWindows = `${process.env['PROGRAMFILES']}\\Git\\usr\\bin\\tar.exe`;
-// The default path of BSDtar on hosted Windows runners
-exports.SystemTarPathOnWindows = `${process.env['SYSTEMDRIVE']}\\Windows\\System32\\tar.exe`;
-exports.TarFilename = 'cache.tar';
-exports.ManifestFilename = 'manifest.txt';
 //# sourceMappingURL=constants.js.map
 
 /***/ }),

dist/restore/index.js

@@ -1177,6 +1177,10 @@ function getVersion(app) {
 // Use zstandard if possible to maximize cache performance
 function getCompressionMethod() {
     return __awaiter(this, void 0, void 0, function* () {
+        if (process.platform === 'win32' && !(yield isGnuTarInstalled())) {
+            // Disable zstd due to bug https://github.com/actions/cache/issues/301
+            return constants_1.CompressionMethod.Gzip;
+        }
         const versionOutput = yield getVersion('zstd');
         const version = semver.clean(versionOutput);
         if (!versionOutput.toLowerCase().includes('zstd command line interface')) {
@@ -1200,16 +1204,13 @@ function getCacheFileName(compressionMethod) {
         : constants_1.CacheFilename.Zstd;
 }
 exports.getCacheFileName = getCacheFileName;
-function getGnuTarPathOnWindows() {
+function isGnuTarInstalled() {
     return __awaiter(this, void 0, void 0, function* () {
-        if (fs.existsSync(constants_1.GnuTarPathOnWindows)) {
-            return constants_1.GnuTarPathOnWindows;
-        }
         const versionOutput = yield getVersion('tar');
-        return versionOutput.toLowerCase().includes('gnu tar') ? io.which('tar') : '';
+        return versionOutput.toLowerCase().includes('gnu tar');
     });
 }
-exports.getGnuTarPathOnWindows = getGnuTarPathOnWindows;
+exports.isGnuTarInstalled = isGnuTarInstalled;
 function assertDefined(name, value) {
     if (value === undefined) {
         throw Error(`Expected ${name} but value was undefiend`);
@@ -3431,7 +3432,6 @@ function getCacheEntry(keys, paths, options) {
         const version = getCacheVersion(paths, options === null || options === void 0 ? void 0 : options.compressionMethod);
         const resource = `cache?keys=${encodeURIComponent(keys.join(','))}&version=${version}`;
         const response = yield requestUtils_1.retryTypedResponse('getCacheEntry', () => __awaiter(this, void 0, void 0, function* () { return httpClient.getJson(getCacheApiUrl(resource)); }));
-        // Cache not found
         if (response.statusCode === 204) {
             // List cache for primary key only if cache miss occurs
             if (core.isDebug()) {
@@ -3445,7 +3445,6 @@ function getCacheEntry(keys, paths, options) {
         const cacheResult = response.result;
         const cacheDownloadUrl = cacheResult === null || cacheResult === void 0 ? void 0 : cacheResult.archiveLocation;
         if (!cacheDownloadUrl) {
-            // Cache achiveLocation not found. This should never happen, and hence bail out.
             throw new Error('Cache not found.');
         }
         core.setSecret(cacheDownloadUrl);
@@ -38136,19 +38135,21 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const constants_1 = __webpack_require__(931);
 const IS_WINDOWS = process.platform === 'win32';
-// Returns tar path and type: BSD or GNU
+function getTarPath(args, compressionMethod) {
-function getTarPath() {
     return __awaiter(this, void 0, void 0, function* () {
         switch (process.platform) {
             case 'win32': {
-                const gnuTar = yield utils.getGnuTarPathOnWindows();
+                const systemTar = `${process.env['windir']}\\System32\\tar.exe`;
-                const systemTar = constants_1.SystemTarPathOnWindows;
+                if (compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                if (gnuTar) {
+                    // We only use zstandard compression on windows when gnu tar is installed due to
-                    // Use GNUtar as default on windows
+                    // a bug with compressing large files with bsdtar + zstd
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--force-local');
                 }
                 else if (fs_1.existsSync(systemTar)) {
-                    return { path: systemTar, type: constants_1.ArchiveToolType.BSD };
+                    return systemTar;
+                }
+                else if (yield utils.isGnuTarInstalled()) {
+                    args.push('--force-local');
                 }
                 break;
             }
@@ -38156,92 +38157,25 @@ function getTarPath() {
                 const gnuTar = yield io.which('gtar', false);
                 if (gnuTar) {
                     // fix permission denied errors when extracting BSD tar archive with GNU tar - https://github.com/actions/cache/issues/527
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--delay-directory-restore');
-                }
+                    return gnuTar;
-                else {
-                    return {
-                        path: yield io.which('tar', true),
-                        type: constants_1.ArchiveToolType.BSD
-                    };
                 }
+                break;
             }
             default:
                 break;
         }
-        // Default assumption is GNU tar is present in path
+        return yield io.which('tar', true);
-        return {
-            path: yield io.which('tar', true),
-            type: constants_1.ArchiveToolType.GNU
-        };
     });
 }
-// Return arguments for tar as per tarPath, compressionMethod, method type and os
+function execTar(args, compressionMethod, cwd) {
-function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
     return __awaiter(this, void 0, void 0, function* () {
-        const args = [`"${tarPath.path}"`];
+        try {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
+            yield exec_1.exec(`"${yield getTarPath(args, compressionMethod)}"`, args, { cwd });
-        const tarFile = 'cache.tar';
-        const workingDirectory = getWorkingDirectory();
-        // Speficic args for BSD tar on windows for workaround
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        // Method specific args
-        switch (type) {
-            case 'create':
-                args.push('--posix', '-cf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--exclude', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--files-from', constants_1.ManifestFilename);
-                break;
-            case 'extract':
-                args.push('-xf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'));
-                break;
-            case 'list':
-                args.push('-tf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P');
-                break;
         }
-        // Platform specific args
+        catch (error) {
-        if (tarPath.type === constants_1.ArchiveToolType.GNU) {
+            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            switch (process.platform) {
-                case 'win32':
-                    args.push('--force-local');
-                    break;
-                case 'darwin':
-                    args.push('--delay-directory-restore');
-                    break;
-            }
         }
-        return args;
-    });
-}
-// Returns commands to run tar and compression program
-function getCommands(compressionMethod, type, archivePath = '') {
-    return __awaiter(this, void 0, void 0, function* () {
-        let args;
-        const tarPath = yield getTarPath();
-        const tarArgs = yield getTarArgs(tarPath, compressionMethod, type, archivePath);
-        const compressionArgs = type !== 'create'
-            ? yield getDecompressionProgram(tarPath, compressionMethod, archivePath)
-            : yield getCompressionProgram(tarPath, compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        if (BSD_TAR_ZSTD && type !== 'create') {
-            args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')];
-        }
-        else {
-            args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')];
-        }
-        if (BSD_TAR_ZSTD) {
-            return args;
-        }
-        return [args.join(' ')];
     });
 }
 function getWorkingDirectory() {
@@ -38249,116 +38183,91 @@ function getWorkingDirectory() {
     return (_a = process.env['GITHUB_WORKSPACE']) !== null && _a !== void 0 ? _a : process.cwd();
 }
 // Common function for extractTar and listTar to get the compression method
-function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
+function getCompressionProgram(compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
+    // -d: Decompress.
-        // -d: Decompress.
+    // unzstd is equivalent to 'zstd -d'
-        // unzstd is equivalent to 'zstd -d'
+    // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+    // Using 30 here because we also support 32-bit self-hosted runners.
-        // Using 30 here because we also support 32-bit self-hosted runners.
+    switch (compressionMethod) {
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
+        case constants_1.CompressionMethod.Zstd:
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
+            return [
-            IS_WINDOWS;
+                '--use-compress-program',
-        switch (compressionMethod) {
+                IS_WINDOWS ? 'zstd -d --long=30' : 'unzstd --long=30'
-            case constants_1.CompressionMethod.Zstd:
+            ];
-                return BSD_TAR_ZSTD
+        case constants_1.CompressionMethod.ZstdWithoutLong:
-                    ? [
+            return ['--use-compress-program', IS_WINDOWS ? 'zstd -d' : 'unzstd'];
-                        'zstd -d --long=30 --force -o',
+        default:
-                        constants_1.TarFilename,
+            return ['-z'];
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+    }
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -d --long=30"' : 'unzstd --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -d --force -o',
-                        constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd'];
-            default:
-                return ['-z'];
-        }
-    });
 }
-// Used for creating the archive
-// -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
-// zstdmt is equivalent to 'zstd -T0'
-// --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-// Using 30 here because we also support 32-bit self-hosted runners.
-// Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
-function getCompressionProgram(tarPath, compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        switch (compressionMethod) {
-            case constants_1.CompressionMethod.Zstd:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --long=30 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -T0 --long=30"' : 'zstdmt --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -T0"' : 'zstdmt'];
-            default:
-                return ['-z'];
-        }
-    });
-}
-// Executes all commands as separate processes
-function execCommands(commands, cwd) {
-    return __awaiter(this, void 0, void 0, function* () {
-        for (const command of commands) {
-            try {
-                yield exec_1.exec(command, undefined, { cwd });
-            }
-            catch (error) {
-                throw new Error(`${command.split(' ')[0]} failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            }
-        }
-    });
-}
-// List the contents of a tar
 function listTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
-        const commands = yield getCommands(compressionMethod, 'list', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-tf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P'
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.listTar = listTar;
-// Extract a tar
 function extractTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Create directory to extract tar into
         const workingDirectory = getWorkingDirectory();
         yield io.mkdirP(workingDirectory);
-        const commands = yield getCommands(compressionMethod, 'extract', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-xf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.extractTar = extractTar;
-// Create a tar
 function createTar(archiveFolder, sourceDirectories, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Write source directories to manifest.txt to avoid command length limits
-        fs_1.writeFileSync(path.join(archiveFolder, constants_1.ManifestFilename), sourceDirectories.join('\n'));
+        const manifestFilename = 'manifest.txt';
-        const commands = yield getCommands(compressionMethod, 'create');
+        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        yield execCommands(commands, archiveFolder);
+        fs_1.writeFileSync(path.join(archiveFolder, manifestFilename), sourceDirectories.join('\n'));
+        const workingDirectory = getWorkingDirectory();
+        // -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
+        // zstdmt is equivalent to 'zstd -T0'
+        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+        // Using 30 here because we also support 32-bit self-hosted runners.
+        // Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
+        function getCompressionProgram() {
+            switch (compressionMethod) {
+                case constants_1.CompressionMethod.Zstd:
+                    return [
+                        '--use-compress-program',
+                        IS_WINDOWS ? 'zstd -T0 --long=30' : 'zstdmt --long=30'
+                    ];
+                case constants_1.CompressionMethod.ZstdWithoutLong:
+                    return ['--use-compress-program', IS_WINDOWS ? 'zstd -T0' : 'zstdmt'];
+                default:
+                    return ['-z'];
+            }
+        }
+        const args = [
+            '--posix',
+            ...getCompressionProgram(),
+            '-cf',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--exclude',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--files-from',
+            manifestFilename
+        ];
+        yield execTar(args, compressionMethod, archiveFolder);
     });
 }
 exports.createTar = createTar;
@@ -47166,7 +47075,6 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const cacheHttpClient = __importStar(__webpack_require__(114));
 const tar_1 = __webpack_require__(434);
-const constants_1 = __webpack_require__(931);
 class ValidationError extends Error {
     constructor(message) {
         super(message);
@@ -47228,31 +47136,16 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
         for (const key of keys) {
             checkKey(key);
         }
-        let cacheEntry;
+        const compressionMethod = yield utils.getCompressionMethod();
-        let compressionMethod = yield utils.getCompressionMethod();
         let archivePath = '';
         try {
             // path are needed to compute version
-            cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
+            const cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
                 compressionMethod
             });
             if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                // This is to support the old cache entry created by gzip on windows.
+                // Cache not found
-                if (process.platform === 'win32' &&
+                return undefined;
-                    compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                    compressionMethod = constants_1.CompressionMethod.Gzip;
-                    cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
-                        compressionMethod
-                    });
-                    if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                        return undefined;
-                    }
-                    core.info("Couldn't find cache entry with zstd compression, falling back to gzip compression.");
-                }
-                else {
-                    // Cache not found
-                    return undefined;
-                }
             }
             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
             core.debug(`Archive Path: ${archivePath}`);
@@ -53362,11 +53255,6 @@ var CompressionMethod;
     CompressionMethod["ZstdWithoutLong"] = "zstd-without-long";
     CompressionMethod["Zstd"] = "zstd";
 })(CompressionMethod = exports.CompressionMethod || (exports.CompressionMethod = {}));
-var ArchiveToolType;
-(function (ArchiveToolType) {
-    ArchiveToolType["GNU"] = "gnu";
-    ArchiveToolType["BSD"] = "bsd";
-})(ArchiveToolType = exports.ArchiveToolType || (exports.ArchiveToolType = {}));
 // The default number of retry attempts.
 exports.DefaultRetryAttempts = 2;
 // The default delay in milliseconds between retry attempts.
@@ -53375,12 +53263,6 @@ exports.DefaultRetryDelay = 5000;
 // over the socket during this period, the socket is destroyed and the download
 // is aborted.
 exports.SocketTimeout = 5000;
-// The default path of GNUtar on hosted Windows runners
-exports.GnuTarPathOnWindows = `${process.env['PROGRAMFILES']}\\Git\\usr\\bin\\tar.exe`;
-// The default path of BSDtar on hosted Windows runners
-exports.SystemTarPathOnWindows = `${process.env['SYSTEMDRIVE']}\\Windows\\System32\\tar.exe`;
-exports.TarFilename = 'cache.tar';
-exports.ManifestFilename = 'manifest.txt';
 //# sourceMappingURL=constants.js.map
 
 /***/ }),

dist/save-only/index.js

@@ -1233,6 +1233,10 @@ function getVersion(app) {
 // Use zstandard if possible to maximize cache performance
 function getCompressionMethod() {
     return __awaiter(this, void 0, void 0, function* () {
+        if (process.platform === 'win32' && !(yield isGnuTarInstalled())) {
+            // Disable zstd due to bug https://github.com/actions/cache/issues/301
+            return constants_1.CompressionMethod.Gzip;
+        }
         const versionOutput = yield getVersion('zstd');
         const version = semver.clean(versionOutput);
         if (!versionOutput.toLowerCase().includes('zstd command line interface')) {
@@ -1256,16 +1260,13 @@ function getCacheFileName(compressionMethod) {
         : constants_1.CacheFilename.Zstd;
 }
 exports.getCacheFileName = getCacheFileName;
-function getGnuTarPathOnWindows() {
+function isGnuTarInstalled() {
     return __awaiter(this, void 0, void 0, function* () {
-        if (fs.existsSync(constants_1.GnuTarPathOnWindows)) {
-            return constants_1.GnuTarPathOnWindows;
-        }
         const versionOutput = yield getVersion('tar');
-        return versionOutput.toLowerCase().includes('gnu tar') ? io.which('tar') : '';
+        return versionOutput.toLowerCase().includes('gnu tar');
     });
 }
-exports.getGnuTarPathOnWindows = getGnuTarPathOnWindows;
+exports.isGnuTarInstalled = isGnuTarInstalled;
 function assertDefined(name, value) {
     if (value === undefined) {
         throw Error(`Expected ${name} but value was undefiend`);
@@ -3487,7 +3488,6 @@ function getCacheEntry(keys, paths, options) {
         const version = getCacheVersion(paths, options === null || options === void 0 ? void 0 : options.compressionMethod);
         const resource = `cache?keys=${encodeURIComponent(keys.join(','))}&version=${version}`;
         const response = yield requestUtils_1.retryTypedResponse('getCacheEntry', () => __awaiter(this, void 0, void 0, function* () { return httpClient.getJson(getCacheApiUrl(resource)); }));
-        // Cache not found
         if (response.statusCode === 204) {
             // List cache for primary key only if cache miss occurs
             if (core.isDebug()) {
@@ -3501,7 +3501,6 @@ function getCacheEntry(keys, paths, options) {
         const cacheResult = response.result;
         const cacheDownloadUrl = cacheResult === null || cacheResult === void 0 ? void 0 : cacheResult.archiveLocation;
         if (!cacheDownloadUrl) {
-            // Cache achiveLocation not found. This should never happen, and hence bail out.
             throw new Error('Cache not found.');
         }
         core.setSecret(cacheDownloadUrl);
@@ -38187,19 +38186,21 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const constants_1 = __webpack_require__(931);
 const IS_WINDOWS = process.platform === 'win32';
-// Returns tar path and type: BSD or GNU
+function getTarPath(args, compressionMethod) {
-function getTarPath() {
     return __awaiter(this, void 0, void 0, function* () {
         switch (process.platform) {
             case 'win32': {
-                const gnuTar = yield utils.getGnuTarPathOnWindows();
+                const systemTar = `${process.env['windir']}\\System32\\tar.exe`;
-                const systemTar = constants_1.SystemTarPathOnWindows;
+                if (compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                if (gnuTar) {
+                    // We only use zstandard compression on windows when gnu tar is installed due to
-                    // Use GNUtar as default on windows
+                    // a bug with compressing large files with bsdtar + zstd
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--force-local');
                 }
                 else if (fs_1.existsSync(systemTar)) {
-                    return { path: systemTar, type: constants_1.ArchiveToolType.BSD };
+                    return systemTar;
+                }
+                else if (yield utils.isGnuTarInstalled()) {
+                    args.push('--force-local');
                 }
                 break;
             }
@@ -38207,92 +38208,25 @@ function getTarPath() {
                 const gnuTar = yield io.which('gtar', false);
                 if (gnuTar) {
                     // fix permission denied errors when extracting BSD tar archive with GNU tar - https://github.com/actions/cache/issues/527
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--delay-directory-restore');
-                }
+                    return gnuTar;
-                else {
-                    return {
-                        path: yield io.which('tar', true),
-                        type: constants_1.ArchiveToolType.BSD
-                    };
                 }
+                break;
             }
             default:
                 break;
         }
-        // Default assumption is GNU tar is present in path
+        return yield io.which('tar', true);
-        return {
-            path: yield io.which('tar', true),
-            type: constants_1.ArchiveToolType.GNU
-        };
     });
 }
-// Return arguments for tar as per tarPath, compressionMethod, method type and os
+function execTar(args, compressionMethod, cwd) {
-function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
     return __awaiter(this, void 0, void 0, function* () {
-        const args = [`"${tarPath.path}"`];
+        try {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
+            yield exec_1.exec(`"${yield getTarPath(args, compressionMethod)}"`, args, { cwd });
-        const tarFile = 'cache.tar';
-        const workingDirectory = getWorkingDirectory();
-        // Speficic args for BSD tar on windows for workaround
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        // Method specific args
-        switch (type) {
-            case 'create':
-                args.push('--posix', '-cf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--exclude', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--files-from', constants_1.ManifestFilename);
-                break;
-            case 'extract':
-                args.push('-xf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'));
-                break;
-            case 'list':
-                args.push('-tf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P');
-                break;
         }
-        // Platform specific args
+        catch (error) {
-        if (tarPath.type === constants_1.ArchiveToolType.GNU) {
+            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            switch (process.platform) {
-                case 'win32':
-                    args.push('--force-local');
-                    break;
-                case 'darwin':
-                    args.push('--delay-directory-restore');
-                    break;
-            }
         }
-        return args;
-    });
-}
-// Returns commands to run tar and compression program
-function getCommands(compressionMethod, type, archivePath = '') {
-    return __awaiter(this, void 0, void 0, function* () {
-        let args;
-        const tarPath = yield getTarPath();
-        const tarArgs = yield getTarArgs(tarPath, compressionMethod, type, archivePath);
-        const compressionArgs = type !== 'create'
-            ? yield getDecompressionProgram(tarPath, compressionMethod, archivePath)
-            : yield getCompressionProgram(tarPath, compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        if (BSD_TAR_ZSTD && type !== 'create') {
-            args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')];
-        }
-        else {
-            args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')];
-        }
-        if (BSD_TAR_ZSTD) {
-            return args;
-        }
-        return [args.join(' ')];
     });
 }
 function getWorkingDirectory() {
@@ -38300,116 +38234,91 @@ function getWorkingDirectory() {
     return (_a = process.env['GITHUB_WORKSPACE']) !== null && _a !== void 0 ? _a : process.cwd();
 }
 // Common function for extractTar and listTar to get the compression method
-function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
+function getCompressionProgram(compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
+    // -d: Decompress.
-        // -d: Decompress.
+    // unzstd is equivalent to 'zstd -d'
-        // unzstd is equivalent to 'zstd -d'
+    // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+    // Using 30 here because we also support 32-bit self-hosted runners.
-        // Using 30 here because we also support 32-bit self-hosted runners.
+    switch (compressionMethod) {
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
+        case constants_1.CompressionMethod.Zstd:
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
+            return [
-            IS_WINDOWS;
+                '--use-compress-program',
-        switch (compressionMethod) {
+                IS_WINDOWS ? 'zstd -d --long=30' : 'unzstd --long=30'
-            case constants_1.CompressionMethod.Zstd:
+            ];
-                return BSD_TAR_ZSTD
+        case constants_1.CompressionMethod.ZstdWithoutLong:
-                    ? [
+            return ['--use-compress-program', IS_WINDOWS ? 'zstd -d' : 'unzstd'];
-                        'zstd -d --long=30 --force -o',
+        default:
-                        constants_1.TarFilename,
+            return ['-z'];
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+    }
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -d --long=30"' : 'unzstd --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -d --force -o',
-                        constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd'];
-            default:
-                return ['-z'];
-        }
-    });
 }
-// Used for creating the archive
-// -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
-// zstdmt is equivalent to 'zstd -T0'
-// --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-// Using 30 here because we also support 32-bit self-hosted runners.
-// Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
-function getCompressionProgram(tarPath, compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        switch (compressionMethod) {
-            case constants_1.CompressionMethod.Zstd:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --long=30 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -T0 --long=30"' : 'zstdmt --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -T0"' : 'zstdmt'];
-            default:
-                return ['-z'];
-        }
-    });
-}
-// Executes all commands as separate processes
-function execCommands(commands, cwd) {
-    return __awaiter(this, void 0, void 0, function* () {
-        for (const command of commands) {
-            try {
-                yield exec_1.exec(command, undefined, { cwd });
-            }
-            catch (error) {
-                throw new Error(`${command.split(' ')[0]} failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            }
-        }
-    });
-}
-// List the contents of a tar
 function listTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
-        const commands = yield getCommands(compressionMethod, 'list', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-tf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P'
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.listTar = listTar;
-// Extract a tar
 function extractTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Create directory to extract tar into
         const workingDirectory = getWorkingDirectory();
         yield io.mkdirP(workingDirectory);
-        const commands = yield getCommands(compressionMethod, 'extract', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-xf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.extractTar = extractTar;
-// Create a tar
 function createTar(archiveFolder, sourceDirectories, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Write source directories to manifest.txt to avoid command length limits
-        fs_1.writeFileSync(path.join(archiveFolder, constants_1.ManifestFilename), sourceDirectories.join('\n'));
+        const manifestFilename = 'manifest.txt';
-        const commands = yield getCommands(compressionMethod, 'create');
+        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        yield execCommands(commands, archiveFolder);
+        fs_1.writeFileSync(path.join(archiveFolder, manifestFilename), sourceDirectories.join('\n'));
+        const workingDirectory = getWorkingDirectory();
+        // -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
+        // zstdmt is equivalent to 'zstd -T0'
+        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+        // Using 30 here because we also support 32-bit self-hosted runners.
+        // Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
+        function getCompressionProgram() {
+            switch (compressionMethod) {
+                case constants_1.CompressionMethod.Zstd:
+                    return [
+                        '--use-compress-program',
+                        IS_WINDOWS ? 'zstd -T0 --long=30' : 'zstdmt --long=30'
+                    ];
+                case constants_1.CompressionMethod.ZstdWithoutLong:
+                    return ['--use-compress-program', IS_WINDOWS ? 'zstd -T0' : 'zstdmt'];
+                default:
+                    return ['-z'];
+            }
+        }
+        const args = [
+            '--posix',
+            ...getCompressionProgram(),
+            '-cf',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--exclude',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--files-from',
+            manifestFilename
+        ];
+        yield execTar(args, compressionMethod, archiveFolder);
     });
 }
 exports.createTar = createTar;
@@ -47308,7 +47217,6 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const cacheHttpClient = __importStar(__webpack_require__(114));
 const tar_1 = __webpack_require__(434);
-const constants_1 = __webpack_require__(931);
 class ValidationError extends Error {
     constructor(message) {
         super(message);
@@ -47370,31 +47278,16 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
         for (const key of keys) {
             checkKey(key);
         }
-        let cacheEntry;
+        const compressionMethod = yield utils.getCompressionMethod();
-        let compressionMethod = yield utils.getCompressionMethod();
         let archivePath = '';
         try {
             // path are needed to compute version
-            cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
+            const cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
                 compressionMethod
             });
             if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                // This is to support the old cache entry created by gzip on windows.
+                // Cache not found
-                if (process.platform === 'win32' &&
+                return undefined;
-                    compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                    compressionMethod = constants_1.CompressionMethod.Gzip;
-                    cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
-                        compressionMethod
-                    });
-                    if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                        return undefined;
-                    }
-                    core.info("Couldn't find cache entry with zstd compression, falling back to gzip compression.");
-                }
-                else {
-                    // Cache not found
-                    return undefined;
-                }
             }
             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
             core.debug(`Archive Path: ${archivePath}`);
@@ -53397,11 +53290,6 @@ var CompressionMethod;
     CompressionMethod["ZstdWithoutLong"] = "zstd-without-long";
     CompressionMethod["Zstd"] = "zstd";
 })(CompressionMethod = exports.CompressionMethod || (exports.CompressionMethod = {}));
-var ArchiveToolType;
-(function (ArchiveToolType) {
-    ArchiveToolType["GNU"] = "gnu";
-    ArchiveToolType["BSD"] = "bsd";
-})(ArchiveToolType = exports.ArchiveToolType || (exports.ArchiveToolType = {}));
 // The default number of retry attempts.
 exports.DefaultRetryAttempts = 2;
 // The default delay in milliseconds between retry attempts.
@@ -53410,12 +53298,6 @@ exports.DefaultRetryDelay = 5000;
 // over the socket during this period, the socket is destroyed and the download
 // is aborted.
 exports.SocketTimeout = 5000;
-// The default path of GNUtar on hosted Windows runners
-exports.GnuTarPathOnWindows = `${process.env['PROGRAMFILES']}\\Git\\usr\\bin\\tar.exe`;
-// The default path of BSDtar on hosted Windows runners
-exports.SystemTarPathOnWindows = `${process.env['SYSTEMDRIVE']}\\Windows\\System32\\tar.exe`;
-exports.TarFilename = 'cache.tar';
-exports.ManifestFilename = 'manifest.txt';
 //# sourceMappingURL=constants.js.map
 
 /***/ }),

dist/save/index.js

@@ -1177,6 +1177,10 @@ function getVersion(app) {
 // Use zstandard if possible to maximize cache performance
 function getCompressionMethod() {
     return __awaiter(this, void 0, void 0, function* () {
+        if (process.platform === 'win32' && !(yield isGnuTarInstalled())) {
+            // Disable zstd due to bug https://github.com/actions/cache/issues/301
+            return constants_1.CompressionMethod.Gzip;
+        }
         const versionOutput = yield getVersion('zstd');
         const version = semver.clean(versionOutput);
         if (!versionOutput.toLowerCase().includes('zstd command line interface')) {
@@ -1200,16 +1204,13 @@ function getCacheFileName(compressionMethod) {
         : constants_1.CacheFilename.Zstd;
 }
 exports.getCacheFileName = getCacheFileName;
-function getGnuTarPathOnWindows() {
+function isGnuTarInstalled() {
     return __awaiter(this, void 0, void 0, function* () {
-        if (fs.existsSync(constants_1.GnuTarPathOnWindows)) {
-            return constants_1.GnuTarPathOnWindows;
-        }
         const versionOutput = yield getVersion('tar');
-        return versionOutput.toLowerCase().includes('gnu tar') ? io.which('tar') : '';
+        return versionOutput.toLowerCase().includes('gnu tar');
     });
 }
-exports.getGnuTarPathOnWindows = getGnuTarPathOnWindows;
+exports.isGnuTarInstalled = isGnuTarInstalled;
 function assertDefined(name, value) {
     if (value === undefined) {
         throw Error(`Expected ${name} but value was undefiend`);
@@ -3431,7 +3432,6 @@ function getCacheEntry(keys, paths, options) {
         const version = getCacheVersion(paths, options === null || options === void 0 ? void 0 : options.compressionMethod);
         const resource = `cache?keys=${encodeURIComponent(keys.join(','))}&version=${version}`;
         const response = yield requestUtils_1.retryTypedResponse('getCacheEntry', () => __awaiter(this, void 0, void 0, function* () { return httpClient.getJson(getCacheApiUrl(resource)); }));
-        // Cache not found
         if (response.statusCode === 204) {
             // List cache for primary key only if cache miss occurs
             if (core.isDebug()) {
@@ -3445,7 +3445,6 @@ function getCacheEntry(keys, paths, options) {
         const cacheResult = response.result;
         const cacheDownloadUrl = cacheResult === null || cacheResult === void 0 ? void 0 : cacheResult.archiveLocation;
         if (!cacheDownloadUrl) {
-            // Cache achiveLocation not found. This should never happen, and hence bail out.
             throw new Error('Cache not found.');
         }
         core.setSecret(cacheDownloadUrl);
@@ -38131,19 +38130,21 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const constants_1 = __webpack_require__(931);
 const IS_WINDOWS = process.platform === 'win32';
-// Returns tar path and type: BSD or GNU
+function getTarPath(args, compressionMethod) {
-function getTarPath() {
     return __awaiter(this, void 0, void 0, function* () {
         switch (process.platform) {
             case 'win32': {
-                const gnuTar = yield utils.getGnuTarPathOnWindows();
+                const systemTar = `${process.env['windir']}\\System32\\tar.exe`;
-                const systemTar = constants_1.SystemTarPathOnWindows;
+                if (compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                if (gnuTar) {
+                    // We only use zstandard compression on windows when gnu tar is installed due to
-                    // Use GNUtar as default on windows
+                    // a bug with compressing large files with bsdtar + zstd
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--force-local');
                 }
                 else if (fs_1.existsSync(systemTar)) {
-                    return { path: systemTar, type: constants_1.ArchiveToolType.BSD };
+                    return systemTar;
+                }
+                else if (yield utils.isGnuTarInstalled()) {
+                    args.push('--force-local');
                 }
                 break;
             }
@@ -38151,92 +38152,25 @@ function getTarPath() {
                 const gnuTar = yield io.which('gtar', false);
                 if (gnuTar) {
                     // fix permission denied errors when extracting BSD tar archive with GNU tar - https://github.com/actions/cache/issues/527
-                    return { path: gnuTar, type: constants_1.ArchiveToolType.GNU };
+                    args.push('--delay-directory-restore');
-                }
+                    return gnuTar;
-                else {
-                    return {
-                        path: yield io.which('tar', true),
-                        type: constants_1.ArchiveToolType.BSD
-                    };
                 }
+                break;
             }
             default:
                 break;
         }
-        // Default assumption is GNU tar is present in path
+        return yield io.which('tar', true);
-        return {
-            path: yield io.which('tar', true),
-            type: constants_1.ArchiveToolType.GNU
-        };
     });
 }
-// Return arguments for tar as per tarPath, compressionMethod, method type and os
+function execTar(args, compressionMethod, cwd) {
-function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
     return __awaiter(this, void 0, void 0, function* () {
-        const args = [`"${tarPath.path}"`];
+        try {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
+            yield exec_1.exec(`"${yield getTarPath(args, compressionMethod)}"`, args, { cwd });
-        const tarFile = 'cache.tar';
-        const workingDirectory = getWorkingDirectory();
-        // Speficic args for BSD tar on windows for workaround
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        // Method specific args
-        switch (type) {
-            case 'create':
-                args.push('--posix', '-cf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--exclude', BSD_TAR_ZSTD
-                    ? tarFile
-                    : cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '--files-from', constants_1.ManifestFilename);
-                break;
-            case 'extract':
-                args.push('-xf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P', '-C', workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'));
-                break;
-            case 'list':
-                args.push('-tf', BSD_TAR_ZSTD
-                    ? tarFile
-                    : archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'), '-P');
-                break;
         }
-        // Platform specific args
+        catch (error) {
-        if (tarPath.type === constants_1.ArchiveToolType.GNU) {
+            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            switch (process.platform) {
-                case 'win32':
-                    args.push('--force-local');
-                    break;
-                case 'darwin':
-                    args.push('--delay-directory-restore');
-                    break;
-            }
         }
-        return args;
-    });
-}
-// Returns commands to run tar and compression program
-function getCommands(compressionMethod, type, archivePath = '') {
-    return __awaiter(this, void 0, void 0, function* () {
-        let args;
-        const tarPath = yield getTarPath();
-        const tarArgs = yield getTarArgs(tarPath, compressionMethod, type, archivePath);
-        const compressionArgs = type !== 'create'
-            ? yield getDecompressionProgram(tarPath, compressionMethod, archivePath)
-            : yield getCompressionProgram(tarPath, compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        if (BSD_TAR_ZSTD && type !== 'create') {
-            args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')];
-        }
-        else {
-            args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')];
-        }
-        if (BSD_TAR_ZSTD) {
-            return args;
-        }
-        return [args.join(' ')];
     });
 }
 function getWorkingDirectory() {
@@ -38244,116 +38178,91 @@ function getWorkingDirectory() {
     return (_a = process.env['GITHUB_WORKSPACE']) !== null && _a !== void 0 ? _a : process.cwd();
 }
 // Common function for extractTar and listTar to get the compression method
-function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
+function getCompressionProgram(compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
+    // -d: Decompress.
-        // -d: Decompress.
+    // unzstd is equivalent to 'zstd -d'
-        // unzstd is equivalent to 'zstd -d'
+    // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+    // Using 30 here because we also support 32-bit self-hosted runners.
-        // Using 30 here because we also support 32-bit self-hosted runners.
+    switch (compressionMethod) {
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
+        case constants_1.CompressionMethod.Zstd:
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
+            return [
-            IS_WINDOWS;
+                '--use-compress-program',
-        switch (compressionMethod) {
+                IS_WINDOWS ? 'zstd -d --long=30' : 'unzstd --long=30'
-            case constants_1.CompressionMethod.Zstd:
+            ];
-                return BSD_TAR_ZSTD
+        case constants_1.CompressionMethod.ZstdWithoutLong:
-                    ? [
+            return ['--use-compress-program', IS_WINDOWS ? 'zstd -d' : 'unzstd'];
-                        'zstd -d --long=30 --force -o',
+        default:
-                        constants_1.TarFilename,
+            return ['-z'];
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+    }
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -d --long=30"' : 'unzstd --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -d --force -o',
-                        constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd'];
-            default:
-                return ['-z'];
-        }
-    });
 }
-// Used for creating the archive
-// -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
-// zstdmt is equivalent to 'zstd -T0'
-// --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
-// Using 30 here because we also support 32-bit self-hosted runners.
-// Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
-function getCompressionProgram(tarPath, compressionMethod) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
-            compressionMethod !== constants_1.CompressionMethod.Gzip &&
-            IS_WINDOWS;
-        switch (compressionMethod) {
-            case constants_1.CompressionMethod.Zstd:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --long=30 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : [
-                        '--use-compress-program',
-                        IS_WINDOWS ? '"zstd -T0 --long=30"' : 'zstdmt --long=30'
-                    ];
-            case constants_1.CompressionMethod.ZstdWithoutLong:
-                return BSD_TAR_ZSTD
-                    ? [
-                        'zstd -T0 --force -o',
-                        cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        constants_1.TarFilename
-                    ]
-                    : ['--use-compress-program', IS_WINDOWS ? '"zstd -T0"' : 'zstdmt'];
-            default:
-                return ['-z'];
-        }
-    });
-}
-// Executes all commands as separate processes
-function execCommands(commands, cwd) {
-    return __awaiter(this, void 0, void 0, function* () {
-        for (const command of commands) {
-            try {
-                yield exec_1.exec(command, undefined, { cwd });
-            }
-            catch (error) {
-                throw new Error(`${command.split(' ')[0]} failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-            }
-        }
-    });
-}
-// List the contents of a tar
 function listTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
-        const commands = yield getCommands(compressionMethod, 'list', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-tf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P'
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.listTar = listTar;
-// Extract a tar
 function extractTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Create directory to extract tar into
         const workingDirectory = getWorkingDirectory();
         yield io.mkdirP(workingDirectory);
-        const commands = yield getCommands(compressionMethod, 'extract', archivePath);
+        const args = [
-        yield execCommands(commands);
+            ...getCompressionProgram(compressionMethod),
+            '-xf',
+            archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
+        ];
+        yield execTar(args, compressionMethod);
     });
 }
 exports.extractTar = extractTar;
-// Create a tar
 function createTar(archiveFolder, sourceDirectories, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Write source directories to manifest.txt to avoid command length limits
-        fs_1.writeFileSync(path.join(archiveFolder, constants_1.ManifestFilename), sourceDirectories.join('\n'));
+        const manifestFilename = 'manifest.txt';
-        const commands = yield getCommands(compressionMethod, 'create');
+        const cacheFileName = utils.getCacheFileName(compressionMethod);
-        yield execCommands(commands, archiveFolder);
+        fs_1.writeFileSync(path.join(archiveFolder, manifestFilename), sourceDirectories.join('\n'));
+        const workingDirectory = getWorkingDirectory();
+        // -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
+        // zstdmt is equivalent to 'zstd -T0'
+        // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
+        // Using 30 here because we also support 32-bit self-hosted runners.
+        // Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
+        function getCompressionProgram() {
+            switch (compressionMethod) {
+                case constants_1.CompressionMethod.Zstd:
+                    return [
+                        '--use-compress-program',
+                        IS_WINDOWS ? 'zstd -T0 --long=30' : 'zstdmt --long=30'
+                    ];
+                case constants_1.CompressionMethod.ZstdWithoutLong:
+                    return ['--use-compress-program', IS_WINDOWS ? 'zstd -T0' : 'zstdmt'];
+                default:
+                    return ['-z'];
+            }
+        }
+        const args = [
+            '--posix',
+            ...getCompressionProgram(),
+            '-cf',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--exclude',
+            cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '-P',
+            '-C',
+            workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
+            '--files-from',
+            manifestFilename
+        ];
+        yield execTar(args, compressionMethod, archiveFolder);
     });
 }
 exports.createTar = createTar;
@@ -47281,7 +47190,6 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const cacheHttpClient = __importStar(__webpack_require__(114));
 const tar_1 = __webpack_require__(434);
-const constants_1 = __webpack_require__(931);
 class ValidationError extends Error {
     constructor(message) {
         super(message);
@@ -47343,31 +47251,16 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
         for (const key of keys) {
             checkKey(key);
         }
-        let cacheEntry;
+        const compressionMethod = yield utils.getCompressionMethod();
-        let compressionMethod = yield utils.getCompressionMethod();
         let archivePath = '';
         try {
             // path are needed to compute version
-            cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
+            const cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
                 compressionMethod
             });
             if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                // This is to support the old cache entry created by gzip on windows.
+                // Cache not found
-                if (process.platform === 'win32' &&
+                return undefined;
-                    compressionMethod !== constants_1.CompressionMethod.Gzip) {
-                    compressionMethod = constants_1.CompressionMethod.Gzip;
-                    cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
-                        compressionMethod
-                    });
-                    if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                        return undefined;
-                    }
-                    core.info("Couldn't find cache entry with zstd compression, falling back to gzip compression.");
-                }
-                else {
-                    // Cache not found
-                    return undefined;
-                }
             }
             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
             core.debug(`Archive Path: ${archivePath}`);
@@ -53370,11 +53263,6 @@ var CompressionMethod;
     CompressionMethod["ZstdWithoutLong"] = "zstd-without-long";
     CompressionMethod["Zstd"] = "zstd";
 })(CompressionMethod = exports.CompressionMethod || (exports.CompressionMethod = {}));
-var ArchiveToolType;
-(function (ArchiveToolType) {
-    ArchiveToolType["GNU"] = "gnu";
-    ArchiveToolType["BSD"] = "bsd";
-})(ArchiveToolType = exports.ArchiveToolType || (exports.ArchiveToolType = {}));
 // The default number of retry attempts.
 exports.DefaultRetryAttempts = 2;
 // The default delay in milliseconds between retry attempts.
@@ -53383,12 +53271,6 @@ exports.DefaultRetryDelay = 5000;
 // over the socket during this period, the socket is destroyed and the download
 // is aborted.
 exports.SocketTimeout = 5000;
-// The default path of GNUtar on hosted Windows runners
-exports.GnuTarPathOnWindows = `${process.env['PROGRAMFILES']}\\Git\\usr\\bin\\tar.exe`;
-// The default path of BSDtar on hosted Windows runners
-exports.SystemTarPathOnWindows = `${process.env['SYSTEMDRIVE']}\\Windows\\System32\\tar.exe`;
-exports.TarFilename = 'cache.tar';
-exports.ManifestFilename = 'manifest.txt';
 //# sourceMappingURL=constants.js.map
 
 /***/ }),

package-lock.json

@@ -1,15 +1,15 @@
 {
   "name": "cache",
-  "version": "3.2.1",
+  "version": "3.2.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "cache",
-      "version": "3.2.1",
+      "version": "3.2.2",
       "license": "MIT",
       "dependencies": {
-        "@actions/cache": "^3.1.0",
+        "@actions/cache": "^3.1.1",
         "@actions/core": "^1.10.0",
         "@actions/exec": "^1.1.1",
         "@actions/io": "^1.1.2"
@@ -36,9 +36,9 @@
       }
     },
     "node_modules/@actions/cache": {
-      "version": "3.1.0",
+      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.1.tgz",
-      "integrity": "sha512-wKGJkpK3uFTgwy+KA0fxz0H3/ZPymdi0IlyhMmyoMeWd+CIv8xVPWdGlrPDDdN9bFgve2yvEPZVaKRb43Uwtyg==",
+      "integrity": "sha512-gOUdNap8FvlpoQAMYWiNPi9Ltt7jKWv9RuUVKg9cp/vQA9qTXoKiBkTioUAgIejh/qf7jrojYn3lCyIRIsoSeQ==",
       "dependencies": {
         "@actions/core": "^1.10.0",
         "@actions/exec": "^1.0.1",
@@ -9722,9 +9722,9 @@
   },
   "dependencies": {
     "@actions/cache": {
-      "version": "3.1.0",
+      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.1.tgz",
-      "integrity": "sha512-wKGJkpK3uFTgwy+KA0fxz0H3/ZPymdi0IlyhMmyoMeWd+CIv8xVPWdGlrPDDdN9bFgve2yvEPZVaKRb43Uwtyg==",
+      "integrity": "sha512-gOUdNap8FvlpoQAMYWiNPi9Ltt7jKWv9RuUVKg9cp/vQA9qTXoKiBkTioUAgIejh/qf7jrojYn3lCyIRIsoSeQ==",
       "requires": {
         "@actions/core": "^1.10.0",
         "@actions/exec": "^1.0.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cache",
-  "version": "3.2.1",
+  "version": "3.2.2",
   "private": true,
   "description": "Cache dependencies and build outputs",
   "main": "dist/restore/index.js",
@@ -23,7 +23,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^3.1.0",
+    "@actions/cache": "^3.1.1",
     "@actions/core": "^1.10.0",
     "@actions/exec": "^1.1.1",
     "@actions/io": "^1.1.2"

tips-and-workarounds.md

@@ -19,6 +19,24 @@ A cache today is immutable and cannot be updated. But some use cases require the
 ## Use cache across feature branches
 Reusing cache across feature branches is not allowed today to provide cache [isolation](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#restrictions-for-accessing-a-cache). However if both feature branches are from the default branch, a good way to achieve this is to ensure that the default branch has a cache. This cache will then be consumable by both feature branches.
 
+## Improving cache restore performance on Windows/Using cross-os caching
+Currently, cache restore is slow on Windows due to tar being inherently slow and the compression algorithm `gzip` in use. `zstd` is the default algorithm in use on linux and macos. It was disabled on Windows due to issues with bsd tar(libarchive), the tar implementation in use on Windows. 
+
+To improve cache restore performance, we can re-enable `zstd` as the compression algorithm using the following workaround. Add the following step to your workflow before the cache step:
+
+```yaml
+    - if: ${{ runner.os == 'Windows' }}
+      name: Use GNU tar
+      shell: cmd
+      run: |
+        echo "Adding GNU tar to PATH"
+        echo C:\Program Files\Git\usr\bin>>"%GITHUB_PATH%"
+```
+
+The `cache` action will use GNU tar instead of bsd tar on Windows. This should work on all Github Hosted runners as it is. For self-hosted runners, please ensure you have GNU tar and `zstd` installed.
+
+The above workaround is also needed if you wish to use cross-os caching since difference of compression algorithms will result in different cache versions for the same cache key. So the above workaround will ensure `zstd` is used for caching on all platforms thus resulting in the same cache version for the same cache key.
+
 ## Force deletion of caches overriding default cache eviction policy
 Caches have [branch scope restriction](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#restrictions-for-accessing-a-cache) in place. This means that if caches for a specific branch are using a lot of storage quota, it may result into more frequently used caches from `default` branch getting thrashed. For example, if there are many pull requests happening on a repo and are creating caches, these cannot be used in default branch scope but will still occupy a lot of space till they get cleaned up by [eviction policy](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#usage-limits-and-eviction-policy). But sometime we want to clean them up on a faster cadence so as to ensure default branch is not thrashing. In order to achieve this, [gh-actions-cache cli](https://github.com/actions/gh-actions-cache/) can be used to delete caches for specific branches.