Attempt to delete the archive after extraction (#209)

This reduces storage space used once the Action has finished executing.

__tests__/actionUtils.test.ts

@@ -1,4 +1,5 @@
 import * as core from "@actions/core";
+import * as fs from "fs";
 import * as os from "os";
 import * as path from "path";
 
@@ -234,3 +235,15 @@ test("isValidEvent returns true for pull request event", () => {
 
     expect(isValidEvent).toBe(true);
 });
+
+test("unlinkFile unlinks file", async () => {
+    const testDirectory = fs.mkdtempSync("unlinkFileTest");
+    const testFile = path.join(testDirectory, "test.txt");
+    fs.writeFileSync(testFile, "hello world");
+
+    await actionUtils.unlinkFile(testFile);
+
+    expect(fs.existsSync(testFile)).toBe(false);
+
+    fs.rmdirSync(testDirectory);
+});

__tests__/restore.test.ts

@@ -241,6 +241,7 @@ test("restore with cache found", async () => {
         .mockReturnValue(fileSize);
 
     const extractTarMock = jest.spyOn(tar, "extractTar");
+    const unlinkFileMock = jest.spyOn(actionUtils, "unlinkFile");
     const setCacheHitOutputMock = jest.spyOn(actionUtils, "setCacheHitOutput");
 
     await run();
@@ -258,6 +259,9 @@ test("restore with cache found", async () => {
     expect(extractTarMock).toHaveBeenCalledTimes(1);
     expect(extractTarMock).toHaveBeenCalledWith(archivePath, cachePath);
 
+    expect(unlinkFileMock).toHaveBeenCalledTimes(1);
+    expect(unlinkFileMock).toHaveBeenCalledWith(archivePath);
+
     expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
     expect(setCacheHitOutputMock).toHaveBeenCalledWith(true);
 

dist/restore/index.js

@@ -1651,6 +1651,7 @@ const io = __importStar(__webpack_require__(1));
 const fs = __importStar(__webpack_require__(747));
 const os = __importStar(__webpack_require__(87));
 const path = __importStar(__webpack_require__(622));
+const util = __importStar(__webpack_require__(669));
 const uuidV4 = __importStar(__webpack_require__(826));
 const constants_1 = __webpack_require__(694);
 // From https://github.com/actions/toolkit/blob/master/packages/tool-cache/src/tool-cache.ts#L23
@@ -1743,6 +1744,10 @@ function isValidEvent() {
     return getSupportedEvents().includes(githubEvent);
 }
 exports.isValidEvent = isValidEvent;
+function unlinkFile(path) {
+    return util.promisify(fs.unlink)(path);
+}
+exports.unlinkFile = unlinkFile;
 
 
 /***/ }),
@@ -2831,18 +2836,29 @@ function run() {
             try {
                 const cacheEntry = yield cacheHttpClient.getCacheEntry(keys);
                 if (!((_a = cacheEntry) === null || _a === void 0 ? void 0 : _a.archiveLocation)) {
-                    core.info(`Cache not found for input keys: ${keys.join(", ")}.`);
+                    core.info(`Cache not found for input keys: ${keys.join(", ")}`);
                     return;
                 }
                 const archivePath = path.join(yield utils.createTempDirectory(), "cache.tgz");
                 core.debug(`Archive Path: ${archivePath}`);
                 // Store the cache result
                 utils.setCacheState(cacheEntry);
+                try {
                     // Download the cache from the cache entry
                     yield cacheHttpClient.downloadCache(cacheEntry.archiveLocation, archivePath);
                     const archiveFileSize = utils.getArchiveFileSize(archivePath);
                     core.info(`Cache Size: ~${Math.round(archiveFileSize / (1024 * 1024))} MB (${archiveFileSize} B)`);
                     yield tar_1.extractTar(archivePath, cachePath);
+                }
+                finally {
+                    // Try to delete the archive to save space
+                    try {
+                        yield utils.unlinkFile(archivePath);
+                    }
+                    catch (error) {
+                        core.debug(`Failed to delete archive: ${error}`);
+                    }
+                }
                 const isExactKeyMatch = utils.isExactKeyMatch(primaryKey, cacheEntry);
                 utils.setCacheHitOutput(isExactKeyMatch);
                 core.info(`Cache restored from key: ${cacheEntry && cacheEntry.cacheKey}`);

dist/save/index.js

@@ -1651,6 +1651,7 @@ const io = __importStar(__webpack_require__(1));
 const fs = __importStar(__webpack_require__(747));
 const os = __importStar(__webpack_require__(87));
 const path = __importStar(__webpack_require__(622));
+const util = __importStar(__webpack_require__(669));
 const uuidV4 = __importStar(__webpack_require__(826));
 const constants_1 = __webpack_require__(694);
 // From https://github.com/actions/toolkit/blob/master/packages/tool-cache/src/tool-cache.ts#L23
@@ -1743,6 +1744,10 @@ function isValidEvent() {
     return getSupportedEvents().includes(githubEvent);
 }
 exports.isValidEvent = isValidEvent;
+function unlinkFile(path) {
+    return util.promisify(fs.unlink)(path);
+}
+exports.unlinkFile = unlinkFile;
 
 
 /***/ }),

src/restore.ts

@@ -75,6 +75,7 @@ async function run(): Promise<void> {
             // Store the cache result
             utils.setCacheState(cacheEntry);
 
+            try {
                 // Download the cache from the cache entry
                 await cacheHttpClient.downloadCache(
                     cacheEntry.archiveLocation,
@@ -89,6 +90,14 @@ async function run(): Promise<void> {
                 );
 
                 await extractTar(archivePath, cachePath);
+            } finally {
+                // Try to delete the archive to save space
+                try {
+                    await utils.unlinkFile(archivePath);
+                } catch (error) {
+                    core.debug(`Failed to delete archive: ${error}`);
+                }
+            }
 
             const isExactKeyMatch = utils.isExactKeyMatch(
                 primaryKey,

src/utils/actionUtils.ts

@@ -3,6 +3,7 @@ import * as io from "@actions/io";
 import * as fs from "fs";
 import * as os from "os";
 import * as path from "path";
+import * as util from "util";
 import * as uuidV4 from "uuid/v4";
 
 import { Events, Outputs, State } from "../constants";
@@ -105,3 +106,7 @@ export function isValidEvent(): boolean {
     const githubEvent = process.env[Events.Key] || "";
     return getSupportedEvents().includes(githubEvent);
 }
+
+export function unlinkFile(path: fs.PathLike): Promise<void> {
+    return util.promisify(fs.unlink)(path);
+}