@@ -1,8 +1,14 @@
+import * as cache from '@actions/cache';
+import * as core from '@actions/core';
 import {
   validateVersion,
-  validatePythonVersionFormatForPyPy
+  validatePythonVersionFormatForPyPy,
+  isCacheFeatureAvailable
 } from '../src/utils';
 
+jest.mock('@actions/cache');
+jest.mock('@actions/core');
+
 describe('validatePythonVersionFormatForPyPy', () => {
   it.each([
     ['3.6', true],
@@ -32,3 +38,39 @@ describe('validateVersion', () => {
     expect(validateVersion(input)).toEqual(expected);
   });
 });
+
+describe('isCacheFeatureAvailable', () => {
+  it('isCacheFeatureAvailable disabled on GHES', () => {
+    jest.spyOn(cache, 'isFeatureAvailable').mockImplementation(() => false);
+    try {
+      process.env['GITHUB_SERVER_URL'] = 'http://example.com';
+      isCacheFeatureAvailable();
+    } catch (error) {
+      expect(error).toHaveProperty(
+        'message',
+        'Caching is only supported on GHES version >= 3.5. If you are on a version >= 3.5, please check with your GHES admin if the Actions cache service is enabled or not.'
+      );
+    } finally {
+      delete process.env['GITHUB_SERVER_URL'];
+    }
+  });
+
+  it('isCacheFeatureAvailable disabled on dotcom', () => {
+    jest.spyOn(cache, 'isFeatureAvailable').mockImplementation(() => false);
+    const infoMock = jest.spyOn(core, 'warning');
+    const message =
+      'The runner was not able to contact the cache service. Caching will be skipped';
+    try {
+      process.env['GITHUB_SERVER_URL'] = 'http://github.com';
+      expect(isCacheFeatureAvailable()).toBe(false);
+      expect(infoMock).toHaveBeenCalledWith(message);
+    } finally {
+      delete process.env['GITHUB_SERVER_URL'];
+    }
+  });
+
+  it('isCacheFeatureAvailable is enabled', () => {
+    jest.spyOn(cache, 'isFeatureAvailable').mockImplementation(() => true);
+    expect(isCacheFeatureAvailable()).toBe(true);
+  });
+});
@@ -3728,10 +3728,7 @@ const options_1 = __webpack_require__(538);
 const requestUtils_1 = __webpack_require__(899);
 const versionSalt = '1.0';
 function getCacheApiUrl(resource) {
-    // Ideally we just use ACTIONS_CACHE_URL
-    const baseUrl = (process.env['ACTIONS_CACHE_URL'] ||
-        process.env['ACTIONS_RUNTIME_URL'] ||
-        '').replace('pipelines', 'artifactcache');
+    const baseUrl = process.env['ACTIONS_CACHE_URL'] || '';
     if (!baseUrl) {
         throw new Error('Cache Service Url not found, unable to restore cache.');
     }
@@ -5920,7 +5917,8 @@ function downloadCacheStorageSDK(archiveLocation, archivePath, options) {
             //
             // If the file exceeds the buffer maximum length (~1 GB on 32-bit systems and ~2 GB
             // on 64-bit systems), split the download into multiple segments
-            const maxSegmentSize = buffer.constants.MAX_LENGTH;
+            // ~2 GB = 2147483647, beyond this, we start getting out of range error. So, capping it accordingly.
+            const maxSegmentSize = Math.min(2147483647, buffer.constants.MAX_LENGTH);
             const downloadProgress = new DownloadProgress(contentLength);
             const fd = fs.openSync(archivePath, 'w');
             try {
@@ -41451,6 +41449,15 @@ function checkKey(key) {
         throw new ValidationError(`Key Validation Error: ${key} cannot contain commas.`);
     }
 }
+/**
+ * isFeatureAvailable to check the presence of Actions cache service
+ *
+ * @returns boolean return true if Actions cache service feature is available, otherwise false
+ */
+function isFeatureAvailable() {
+    return !!process.env['ACTIONS_CACHE_URL'];
+}
+exports.isFeatureAvailable = isFeatureAvailable;
 /**
  * Restores cache from keys
  *
 
@@ -1,6 +1,6 @@
 {
   "name": "setup-python",
-  "version": "2.2.2",
+  "version": "3.1.0",
   "private": true,
   "description": "Setup python action",
   "main": "dist/index.js",
@@ -23,7 +23,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^1.0.8",
+    "@actions/cache": "^2.0.0",
     "@actions/core": "^1.2.3",
     "@actions/exec": "^1.1.0",
     "@actions/glob": "^0.2.0",
 
@@ -4,16 +4,13 @@ import * as finderPyPy from './find-pypy';
 import * as path from 'path';
 import * as os from 'os';
 import {getCacheDistributor} from './cache-distributions/cache-factory';
-import {isGhes} from './utils';
+import {isCacheFeatureAvailable} from './utils';
 
 function isPyPyVersion(versionSpec: string) {
   return versionSpec.startsWith('pypy-');
 }
 
 async function cacheDependencies(cache: string, pythonVersion: string) {
-  if (isGhes()) {
-    throw new Error('Caching is not supported on GHES');
-  }
   const cacheDependencyPath =
     core.getInput('cache-dependency-path') || undefined;
   const cacheDistributor = getCacheDistributor(
@@ -43,7 +40,7 @@ async function run() {
       }
 
       const cache = core.getInput('cache');
-      if (cache) {
+      if (cache && isCacheFeatureAvailable()) {
         await cacheDependencies(cache, pythonVersion);
       }
     }
 
@@ -1,3 +1,5 @@
+import * as cache from '@actions/cache';
+import * as core from '@actions/core';
 import fs from 'fs';
 import * as path from 'path';
 import * as semver from 'semver';
@@ -99,3 +101,21 @@ export function isGhes(): boolean {
   );
   return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';
 }
+
+export function isCacheFeatureAvailable(): boolean {
+  if (!cache.isFeatureAvailable()) {
+    if (isGhes()) {
+      throw new Error(
+        'Caching is only supported on GHES version >= 3.5. If you are on a version >= 3.5, please check with your GHES admin if the Actions cache service is enabled or not.'
+      );
+    } else {
+      core.warning(
+        'The runner was not able to contact the cache service. Caching will be skipped'
+      );
+    }
+
+    return false;
+  }
+
+  return true;
+}
Original file line number	Diff line number	Diff line change
`@@ -4,16 +4,13 @@ import * as finderPyPy from './find-pypy';`
`4`	`4`	`import * as path from 'path';`
`5`	`5`	`import * as os from 'os';`
`6`	`6`	`import {getCacheDistributor} from './cache-distributions/cache-factory';`
`7`		`-import {isGhes} from './utils';`
	`7`	`+import {isCacheFeatureAvailable} from './utils';`
`8`	`8`
`9`	`9`	`function isPyPyVersion(versionSpec: string) {`
`10`	`10`	`return versionSpec.startsWith('pypy-');`
`11`	`11`	`}`
`12`	`12`
`13`	`13`	`async function cacheDependencies(cache: string, pythonVersion: string) {`
`14`		`- if (isGhes()) {`
`15`		`- throw new Error('Caching is not supported on GHES');`
`16`		`- }`
`17`	`14`	`const cacheDependencyPath =`
`18`	`15`	`core.getInput('cache-dependency-path') \|\| undefined;`
`19`	`16`	`const cacheDistributor = getCacheDistributor(`
`@@ -43,7 +40,7 @@ async function run() {`
`43`	`40`	`}`
`44`	`41`
`45`	`42`	`const cache = core.getInput('cache');`
`46`		`- if (cache) {`
	`43`	`+ if (cache && isCacheFeatureAvailable()) {`
`47`	`44`	`await cacheDependencies(cache, pythonVersion);`
`48`	`45`	`}`
`49`	`46`	`}`