Add backend ids

Fix `fail-on-cache-miss` not working

.github/workflows/check-dist.yml

@@ -15,3 +15,5 @@ jobs:
   call-check-dist:
     name: Check dist/
     uses: actions/reusable-workflows/.github/workflows/check-dist.yml@main
+    with:
+      node-version: "20.x"

.github/workflows/release-new-action-version.yml

@@ -0,0 +1,28 @@
+name: Release new action version
+on:
+  release:
+    types: [released]
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+env:
+  TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
+permissions:
+  contents: write
+
+jobs:
+  update_tag:
+    name: Update the major tag to include the ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }} changes
+    environment:
+      name: releaseNewActionVersion
+    runs-on: ubuntu-latest
+    steps:
+    - name: Update the ${{ env.TAG_NAME }} tag
+      id: update-major-tag
+      uses: actions/publish-action@v0.3.0
+      with:
+        source-tag: ${{ env.TAG_NAME }}
+        slack-webhook: ${{ secrets.SLACK_WEBHOOK }}

.github/workflows/workflow.yml

@@ -21,10 +21,10 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v3
-    - name: Setup Node.js 16.x
+    - name: Setup Node.js 20.x
       uses: actions/setup-node@v3
       with:
-        node-version: 16.x
+        node-version: 20.x
         cache: npm
     - run: npm ci
     - name: Prettier Format Check

.licenses/npm/@actions/cache.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/cache"
-version: 3.2.3
+version: 3.2.4
 type: npm
 summary: Actions cache lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/cache

README.md

@@ -14,6 +14,11 @@ See ["Caching dependencies to speed up workflows"](https://docs.github.com/en/ac
 
 ## What's New
 
+### v4
+
+* Updated to node 20
+* Added a `save-always` flag to save the cache even if a prior step fails
+
 ### v3
 
 * Added support for caching in GHES 3.5+.
@@ -90,7 +95,7 @@ jobs:
 
     - name: Cache Primes
       id: cache-primes
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: prime-numbers
         key: ${{ runner.os }}-primes
@@ -121,7 +126,7 @@ jobs:
 
     - name: Restore cached Primes
       id: cache-primes-restore
-      uses: actions/cache/restore@v3
+      uses: actions/cache/restore@v4
       with:
         path: |
           path/to/dependencies
@@ -132,7 +137,7 @@ jobs:
     .
     - name: Save Primes
       id: cache-primes-save
-      uses: actions/cache/save@v3
+      uses: actions/cache/save@v4
       with:
         path: |
           path/to/dependencies
@@ -186,7 +191,7 @@ A cache key can include any of the contexts, functions, literals, and operators
 For example, using the [`hashFiles`](https://docs.github.com/en/actions/learn-github-actions/expressions#hashfiles) function allows you to create a new cache when dependencies change.
 
 ```yaml
-  - uses: actions/cache@v3
+  - uses: actions/cache@v4
     with:
       path: |
         path/to/dependencies
@@ -204,7 +209,7 @@ Additionally, you can use arbitrary command output in a cache key, such as a dat
       echo "date=$(/bin/date -u "+%Y%m%d")" >> $GITHUB_OUTPUT
     shell: bash
 
-  - uses: actions/cache@v3
+  - uses: actions/cache@v4
     with:
       path: path/to/dependencies
       key: ${{ runner.os }}-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/lockfiles') }}
@@ -226,7 +231,7 @@ Example:
 steps:
   - uses: actions/checkout@v3
 
-  - uses: actions/cache@v3
+  - uses: actions/cache@v4
     id: cache
     with:
       path: path/to/dependencies
@@ -258,7 +263,7 @@ jobs:
 
       - name: Cache Primes
         id: cache-primes
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: prime-numbers
           key: primes
@@ -269,7 +274,7 @@ jobs:
 
       - name: Cache Numbers
         id: cache-numbers
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: numbers
           key: primes
@@ -285,7 +290,7 @@ jobs:
 
       - name: Cache Primes
         id: cache-primes
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: prime-numbers
           key: primes

RELEASES.md

@@ -1,77 +1,54 @@
 # Releases
 
-### 3.0.0
+### 4.0.2
 
-- Updated minimum runner version support from node 12 -> node 16
+- Fixed restore `fail-on-cache-miss` not working.
 
-### 3.0.1
+### 4.0.1
 
-- Added support for caching from GHES 3.5.
+- Updated `isGhes` check
-- Fixed download issue for files > 2GB during restore.
 
-### 3.0.2
+### 4.0.0
 
-- Added support for dynamic cache size cap on GHES.
+- Updated minimum runner version support from node 12 -> node 20
 
-### 3.0.3
+### 3.3.3
 
-- Fixed avoiding empty cache save when no files are available for caching. ([issue](https://github.com/actions/cache/issues/624))
+- Updates @actions/cache to v3.2.3 to fix accidental mutated path arguments to `getCacheVersion` [actions/toolkit#1378](https://github.com/actions/toolkit/pull/1378)
+- Additional audit fixes of npm package(s)
 
-### 3.0.4
+### 3.3.2
 
-- Fixed tar creation error while trying to create tar with path as `~/` home folder on `ubuntu-latest`. ([issue](https://github.com/actions/cache/issues/689))
+- Fixes bug with Azure SDK causing blob downloads to get stuck.
 
-### 3.0.5
+### 3.3.1
 
-- Removed error handling by consuming actions/cache 3.0 toolkit, Now cache server error handling will be done by toolkit. ([PR](https://github.com/actions/cache/pull/834))
+- Reduced segment size to 128MB and segment timeout to 10 minutes to fail fast in case the cache download is stuck.
 
-### 3.0.6
+### 3.3.0
 
-- Fixed [#809](https://github.com/actions/cache/issues/809) - zstd -d: no such file or directory error
+- Added option to lookup cache without downloading it.
-- Fixed [#833](https://github.com/actions/cache/issues/833) - cache doesn't work with github workspace directory
 
-### 3.0.7
+### 3.2.6
 
-- Fixed [#810](https://github.com/actions/cache/issues/810) - download stuck issue. A new timeout is introduced in the download process to abort the download if it gets stuck and doesn't finish within an hour.
+- Fix zstd not being used after zstd version upgrade to 1.5.4 on hosted runners.
 
-### 3.0.8
+### 3.2.5
 
-- Fix zstd not working for windows on gnu tar in issues [#888](https://github.com/actions/cache/issues/888) and [#891](https://github.com/actions/cache/issues/891).
+- Added fix to prevent from setting MYSYS environment variable globally.
-- 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.
 
-### 3.0.9
+### 3.2.4
 
-- Enhanced the warning message for cache unavailablity in case of GHES.
+- Added option to fail job on cache miss.
 
-### 3.0.10
+### 3.2.3
 
-- Fix a bug with sorting inputs.
+- Support cross os caching on Windows as an opt-in feature.
-- Update definition for restore-keys in README.md
+- Fix issue with symlink restoration on Windows for cross-os caches.
 
-### 3.0.11
+### 3.2.2
 
-- Update toolkit version to 3.0.5 to include `@actions/core@^1.10.0`
+- Reverted the changes made in 3.2.1 to use gnu tar and zstd by default on windows.
-- Update `@actions/cache` to use updated `saveState` and `setOutput` functions from `@actions/core@^1.10.0`
-
-### 3.1.0-beta.1
-
-- 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))
-
-### 3.1.0-beta.2
-
-- Added support for fallback to gzip to restore old caches on windows.
-
-### 3.1.0-beta.3
-
-- Bug fixes for bsdtar fallback if gnutar not available and gzip fallback if cache saved using old cache action on windows.
-
-### 3.2.0-beta.1
-
-- Added two new actions - [restore](restore/action.yml) and [save](save/action.yml) for granular control on cache.
-
-### 3.2.0
-
-- Released the two new actions - [restore](restore/action.yml) and [save](save/action.yml) for granular control on cache
 
 ### 3.2.1
 
@@ -79,40 +56,75 @@
 - 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
+### 3.2.0
 
-- Reverted the changes made in 3.2.1 to use gnu tar and zstd by default on windows.
+- Released the two new actions - [restore](restore/action.yml) and [save](save/action.yml) for granular control on cache
 
-### 3.2.3
+### 3.2.0-beta.1
 
-- Support cross os caching on Windows as an opt-in feature.
+- Added two new actions - [restore](restore/action.yml) and [save](save/action.yml) for granular control on cache.
-- Fix issue with symlink restoration on Windows for cross-os caches.
 
-### 3.2.4
+### 3.1.0-beta.3
 
-- Added option to fail job on cache miss.
+- Bug fixes for bsdtar fallback if gnutar not available and gzip fallback if cache saved using old cache action on windows.
 
-### 3.2.5
+### 3.1.0-beta.2
 
-- Added fix to prevent from setting MYSYS environment variable globally.
+- Added support for fallback to gzip to restore old caches on windows.
 
-### 3.2.6
+### 3.1.0-beta.1
 
-- Fix zstd not being used after zstd version upgrade to 1.5.4 on hosted runners.
+- 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))
 
-### 3.3.0
+### 3.0.11
 
-- Added option to lookup cache without downloading it.
+- Update toolkit version to 3.0.5 to include `@actions/core@^1.10.0`
+- Update `@actions/cache` to use updated `saveState` and `setOutput` functions from `@actions/core@^1.10.0`
 
-### 3.3.1
+### 3.0.10
 
-- Reduced segment size to 128MB and segment timeout to 10 minutes to fail fast in case the cache download is stuck.
+- Fix a bug with sorting inputs.
+- Update definition for restore-keys in README.md
 
-### 3.3.2
+### 3.0.9
 
-- Fixes bug with Azure SDK causing blob downloads to get stuck.
+- Enhanced the warning message for cache unavailablity in case of GHES.
 
-### 3.3.3
+### 3.0.8
 
-- Updates @actions/cache to v3.2.3 to fix accidental mutated path arguments to `getCacheVersion` [actions/toolkit#1378](https://github.com/actions/toolkit/pull/1378)
+- Fix zstd not working for windows on gnu tar in issues [#888](https://github.com/actions/cache/issues/888) and [#891](https://github.com/actions/cache/issues/891).
-- Additional audit fixes of npm package(s)
+- 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.
+
+### 3.0.7
+
+- Fixed [#810](https://github.com/actions/cache/issues/810) - download stuck issue. A new timeout is introduced in the download process to abort the download if it gets stuck and doesn't finish within an hour.
+
+### 3.0.6
+
+- Fixed [#809](https://github.com/actions/cache/issues/809) - zstd -d: no such file or directory error
+- Fixed [#833](https://github.com/actions/cache/issues/833) - cache doesn't work with github workspace directory
+
+### 3.0.5
+
+- Removed error handling by consuming actions/cache 3.0 toolkit, Now cache server error handling will be done by toolkit. ([PR](https://github.com/actions/cache/pull/834))
+
+### 3.0.4
+
+- Fixed tar creation error while trying to create tar with path as `~/` home folder on `ubuntu-latest`. ([issue](https://github.com/actions/cache/issues/689))
+
+### 3.0.3
+
+- Fixed avoiding empty cache save when no files are available for caching. ([issue](https://github.com/actions/cache/issues/624))
+
+### 3.0.2
+
+- Added support for dynamic cache size cap on GHES.
+
+### 3.0.1
+
+- Added support for caching from GHES 3.5.
+- Fixed download issue for files > 2GB during restore.
+
+### 3.0.0
+
+- Updated minimum runner version support from node 12 -> node 16

__tests__/restoreImpl.test.ts

@@ -449,3 +449,19 @@ test("restore with lookup-only set", async () => {
     );
     expect(failedMock).toHaveBeenCalledTimes(0);
 });
+
+test("restore failure with earlyExit should call process exit", async () => {
+    testUtils.setInput(Inputs.Path, "node_modules");
+    const failedMock = jest.spyOn(core, "setFailed");
+    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
+    const processExitMock = jest.spyOn(process, "exit").mockImplementation();
+
+    // call restoreImpl with `earlyExit` set to true
+    await restoreImpl(new StateProvider(), true);
+
+    expect(restoreCacheMock).toHaveBeenCalledTimes(0);
+    expect(failedMock).toHaveBeenCalledWith(
+        "Input required and not supplied: key"
+    );
+    expect(processExitMock).toHaveBeenCalledWith(1);
+});

__tests__/save.test.ts

@@ -2,7 +2,7 @@ import * as cache from "@actions/cache";
 import * as core from "@actions/core";
 
 import { Events, Inputs, RefKey } from "../src/constants";
-import run from "../src/save";
+import { saveRun } from "../src/saveImpl";
 import * as actionUtils from "../src/utils/actionUtils";
 import * as testUtils from "../src/utils/testUtils";
 
@@ -100,7 +100,7 @@ test("save with valid inputs uploads a cache", async () => {
             return Promise.resolve(cacheId);
         });
 
-    await run();
+    await saveRun();
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(

__tests__/saveImpl.test.ts

@@ -2,7 +2,7 @@ import * as cache from "@actions/cache";
 import * as core from "@actions/core";
 
 import { Events, Inputs, RefKey } from "../src/constants";
-import run from "../src/saveImpl";
+import { saveImpl } from "../src/saveImpl";
 import { StateProvider } from "../src/stateProvider";
 import * as actionUtils from "../src/utils/actionUtils";
 import * as testUtils from "../src/utils/testUtils";
@@ -77,7 +77,7 @@ test("save with invalid event outputs warning", async () => {
     const invalidEvent = "commit_comment";
     process.env[Events.Key] = invalidEvent;
     delete process.env[RefKey];
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
     expect(logWarningMock).toHaveBeenCalledWith(
         `Event Validation Error: The event type ${invalidEvent} is not supported because it's not tied to a branch or tag ref.`
     );
@@ -100,7 +100,7 @@ test("save with no primary key in state outputs warning", async () => {
         });
     const saveCacheMock = jest.spyOn(cache, "saveCache");
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(0);
     expect(logWarningMock).toHaveBeenCalledWith(`Key is not specified.`);
@@ -115,7 +115,7 @@ test("save without AC available should no-op", async () => {
 
     const saveCacheMock = jest.spyOn(cache, "saveCache");
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(0);
 });
@@ -128,7 +128,7 @@ test("save on ghes without AC available should no-op", async () => {
 
     const saveCacheMock = jest.spyOn(cache, "saveCache");
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(0);
 });
@@ -161,7 +161,7 @@ test("save on GHES with AC available", async () => {
             return Promise.resolve(cacheId);
         });
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(
@@ -194,7 +194,7 @@ test("save with exact match returns early", async () => {
         });
     const saveCacheMock = jest.spyOn(cache, "saveCache");
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(0);
     expect(infoMock).toHaveBeenCalledWith(
@@ -221,7 +221,7 @@ test("save with missing input outputs warning", async () => {
         });
     const saveCacheMock = jest.spyOn(cache, "saveCache");
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(0);
     expect(logWarningMock).toHaveBeenCalledWith(
@@ -259,7 +259,7 @@ test("save with large cache outputs warning", async () => {
             );
         });
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(
@@ -306,7 +306,7 @@ test("save with reserve cache failure outputs warning", async () => {
             throw error;
         });
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(
@@ -349,7 +349,7 @@ test("save with server error outputs warning", async () => {
             throw new Error("HTTP Error Occurred");
         });
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(
@@ -392,7 +392,7 @@ test("save with valid inputs uploads a cache", async () => {
             return Promise.resolve(cacheId);
         });
 
-    await run(new StateProvider());
+    await saveImpl(new StateProvider());
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(

__tests__/saveOnly.test.ts

@@ -2,7 +2,7 @@ import * as cache from "@actions/cache";
 import * as core from "@actions/core";
 
 import { Events, Inputs, RefKey } from "../src/constants";
-import run from "../src/saveOnly";
+import { saveOnlyRun } from "../src/saveImpl";
 import * as actionUtils from "../src/utils/actionUtils";
 import * as testUtils from "../src/utils/testUtils";
 
@@ -90,7 +90,7 @@ test("save with valid inputs uploads a cache", async () => {
             return Promise.resolve(cacheId);
         });
 
-    await run();
+    await saveOnlyRun();
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(
@@ -122,7 +122,7 @@ test("save failing logs the warning message", async () => {
             return Promise.resolve(cacheId);
         });
 
-    await run();
+    await saveOnlyRun();
 
     expect(saveCacheMock).toHaveBeenCalledTimes(1);
     expect(saveCacheMock).toHaveBeenCalledWith(

action.yml

@@ -26,14 +26,18 @@ inputs:
     description: 'Check if a cache entry exists for the given input(s) (key, restore-keys) without downloading the cache'
     default: 'false'
     required: false
+  save-always:
+    description: 'Run the post step to save the cache even if another step before fails'
+    default: 'false'
+    required: false    
 outputs:
   cache-hit:
     description: 'A boolean value to indicate an exact match was found for the primary key'
 runs:
-  using: 'node16'
+  using: 'node20'
   main: 'dist/restore/index.js'
   post: 'dist/save/index.js'
-  post-if: success()
+  post-if: "success() || github.event.inputs.save-always"
 branding:
   icon: 'archive'
   color: 'gray-dark'

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cache",
-  "version": "3.3.3",
+  "version": "4.0.2",
   "private": true,
   "description": "Cache dependencies and build outputs",
   "main": "dist/restore/index.js",
@@ -23,10 +23,10 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^3.2.3",
+    "@actions/cache": "file:/workspaces/toolkit/packages/cache",
-    "@actions/core": "^1.10.0",
+    "@actions/core": "file:/workspaces/toolkit/packages/core",
-    "@actions/exec": "^1.1.1",
+    "@actions/exec": "file:/workspaces/toolkit/packages/exec",
-    "@actions/io": "^1.1.2"
+    "@actions/io": "file:/workspaces/toolkit/packages/io"
   },
   "devDependencies": {
     "@types/jest": "^27.5.2",
@@ -34,7 +34,7 @@
     "@types/node": "^16.18.3",
     "@typescript-eslint/eslint-plugin": "^5.45.0",
     "@typescript-eslint/parser": "^5.45.0",
-    "@zeit/ncc": "^0.20.5",
+    "@vercel/ncc": "^0.38.1",
     "eslint": "^8.28.0",
     "eslint-config-prettier": "^8.5.0",
     "eslint-plugin-import": "^2.26.0",

restore/action.yml

@@ -31,7 +31,7 @@ outputs:
   cache-matched-key:
     description: 'Key of the cache that was restored, it could either be the primary key on cache-hit or a partial/complete match of one of the restore keys'
 runs:
-  using: 'node16'
+  using: 'node20'
   main: '../dist/restore-only/index.js'
 branding:
   icon: 'archive'

save/action.yml

@@ -16,7 +16,7 @@ inputs:
     default: 'false'
     required: false
 runs:
-  using: 'node16'
+  using: 'node20'
   main: '../dist/save-only/index.js'
 branding:
   icon: 'archive'

src/restoreImpl.ts

@@ -10,7 +10,8 @@ import {
 import * as utils from "./utils/actionUtils";
 
 export async function restoreImpl(
-    stateProvider: IStateProvider
+    stateProvider: IStateProvider,
+    earlyExit?: boolean | undefined
 ): Promise<string | undefined> {
     try {
         if (!utils.isCacheFeatureAvailable()) {
@@ -83,6 +84,9 @@ export async function restoreImpl(
         return cacheKey;
     } catch (error: unknown) {
         core.setFailed((error as Error).message);
+        if (earlyExit) {
+            process.exit(1);
+        }
     }
 }
 
@@ -90,14 +94,7 @@ async function run(
     stateProvider: IStateProvider,
     earlyExit: boolean | undefined
 ): Promise<void> {
-    try {
+    await restoreImpl(stateProvider, earlyExit);
-        await restoreImpl(stateProvider);
-    } catch (err) {
-        console.error(err);
-        if (earlyExit) {
-            process.exit(1);
-        }
-    }
 
     // node will stay alive if any promises are not resolved,
     // which is a possibility if HTTP requests are dangling

src/save.ts

@@ -1,10 +1,3 @@
-import saveImpl from "./saveImpl";
+import { saveRun } from "./saveImpl";
-import { StateProvider } from "./stateProvider";
 
-async function run(): Promise<void> {
+saveRun(true);
-    await saveImpl(new StateProvider());
-}
-
-run();
-
-export default run;

src/saveImpl.ts

@@ -2,7 +2,11 @@ import * as cache from "@actions/cache";
 import * as core from "@actions/core";
 
 import { Events, Inputs, State } from "./constants";
-import { IStateProvider } from "./stateProvider";
+import {
+    IStateProvider,
+    NullStateProvider,
+    StateProvider
+} from "./stateProvider";
 import * as utils from "./utils/actionUtils";
 
 // Catch and log any unhandled exceptions.  These exceptions can leak out of the uploadChunk method in
@@ -10,7 +14,9 @@ import * as utils from "./utils/actionUtils";
 // throw an uncaught exception.  Instead of failing this action, just warn.
 process.on("uncaughtException", e => utils.logWarning(e.message));
 
-async function saveImpl(stateProvider: IStateProvider): Promise<number | void> {
+export async function saveImpl(
+    stateProvider: IStateProvider
+): Promise<number | void> {
     let cacheId = -1;
     try {
         if (!utils.isCacheFeatureAvailable()) {
@@ -72,4 +78,47 @@ async function saveImpl(stateProvider: IStateProvider): Promise<number | void> {
     return cacheId;
 }
 
-export default saveImpl;
+export async function saveOnlyRun(
+    earlyExit?: boolean | undefined
+): Promise<void> {
+    try {
+        const cacheId = await saveImpl(new NullStateProvider());
+        if (cacheId === -1) {
+            core.warning(`Cache save failed.`);
+        }
+    } catch (err) {
+        console.error(err);
+        if (earlyExit) {
+            process.exit(1);
+        }
+    }
+
+    // node will stay alive if any promises are not resolved,
+    // which is a possibility if HTTP requests are dangling
+    // due to retries or timeouts. We know that if we got here
+    // that all promises that we care about have successfully
+    // resolved, so simply exit with success.
+    if (earlyExit) {
+        process.exit(0);
+    }
+}
+
+export async function saveRun(earlyExit?: boolean | undefined): Promise<void> {
+    try {
+        await saveImpl(new StateProvider());
+    } catch (err) {
+        console.error(err);
+        if (earlyExit) {
+            process.exit(1);
+        }
+    }
+
+    // node will stay alive if any promises are not resolved,
+    // which is a possibility if HTTP requests are dangling
+    // due to retries or timeouts. We know that if we got here
+    // that all promises that we care about have successfully
+    // resolved, so simply exit with success.
+    if (earlyExit) {
+        process.exit(0);
+    }
+}

src/saveOnly.ts

@@ -1,15 +1,3 @@
-import * as core from "@actions/core";
+import { saveOnlyRun } from "./saveImpl";
 
-import saveImpl from "./saveImpl";
+saveOnlyRun(true);
-import { NullStateProvider } from "./stateProvider";
-
-async function run(): Promise<void> {
-    const cacheId = await saveImpl(new NullStateProvider());
-    if (cacheId === -1) {
-        core.warning(`Cache save failed.`);
-    }
-}
-
-run();
-
-export default run;