Support caching for mono repos and repositories with complex structure

Author: MaksimZhukov

Diff for: .github/workflows/e2e-cache.yml

@@ -101,6 +101,8 @@ jobs:
   node-yarn2-depencies-caching:
     name: Test yarn 2 (Node ${{ matrix.node-version}}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
+    env:
+      YARN_ENABLE_IMMUTABLE_INSTALLS: false
     strategy:
       fail-fast: false
       matrix:

Diff for: README.md

@@ -41,7 +41,7 @@ nvm lts syntax: `lts/erbium`, `lts/fermium`, `lts/*`
 
 ### Caching packages dependencies
 
-The action has a built-in functionality for caching and restoring npm/yarn dependencies. Supported package managers are `npm`, `yarn`, `pnpm`. The `cache` input is optional, and caching is turned off by default.
+The action has a built-in functionality for caching and restoring npm/yarn dependencies. Supported package managers are `npm`, `yarn`, `pnpm`. The `cache` input is optional, and caching is turned off by default. By default, the action searches for the dependency file in the project root and uses its hash as a part of cache key. Use `cache-dependency-path` to specify custom dependency file path. The field accepts wildcards or an array of files to be cached. 
 
 **Caching npm dependencies:**
 ```yaml
@@ -90,7 +90,7 @@ steps:
 - run: pnpm test
 ```
 
-> At the moment, only `lock` files in the project root are supported.
+For more examlpes of caching, please see the [Advanced usage](docs/advanced-usage.md#caching-packages-dependencies) guide.
 
 ### Matrix Testing:
 ```yaml
@@ -114,10 +114,11 @@ jobs:
 
 1. [Check latest version](docs/advanced-usage.md#check-latest-version)
 2. [Using different architectures](docs/advanced-usage.md#architecture)
-3. [Using multiple operating systems and architectures](docs/advanced-usage.md#multiple-operating-systems-and-architectures)
-4. [Publishing to npmjs and GPR with npm](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-npm)
-5. [Publishing to npmjs and GPR with yarn](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-yarn)
-6. [Using private packages](docs/advanced-usage.md#use-private-packages)
+3. [Caching packages dependencies](docs/advanced-usage.md#caching-packages-dependencies)
+4. [Using multiple operating systems and architectures](docs/advanced-usage.md#multiple-operating-systems-and-architectures)
+5. [Publishing to npmjs and GPR with npm](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-npm)
+6. [Publishing to npmjs and GPR with yarn](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-yarn)
+7. [Using private packages](docs/advanced-usage.md#use-private-packages)
 
 # License
 

Diff for: action.yml

@@ -21,6 +21,8 @@ inputs:
     default: ${{ github.token }}
   cache:
     description: 'Used to specify a package manager for caching in the default directory. Supported values: npm, yarn, pnpm'
+  cache-dependency-path:
+    description: 'Used to specify path to a dependencies file: package-lock.json, yarn.lock, etc. Supports wildcards or an array of file names.'
 # TODO: add input to control forcing to pull from cloud or dist. 
 #       escape valve for someone having issues or needing the absolute latest which isn't cached yet
 # Deprecated option, do not use. Will not be supported after October 1, 2019

Diff for: dist/setup/index.js

@@ -1,6 +1,6 @@
 # Advanced usage
 
-### Check latest version:
+### Check latest version
 
 The `check-latest` flag defaults to `false`. When set to `false`, the action will first check the local cache for a semver match. If unable to find a specific version in the cache, the action will attempt to download a version of Node.js. It will pull LTS versions from [node-versions releases](https://github.com/actions/node-versions/releases) and on miss or failure will fall back to the previous behavior of downloading directly from [node dist](https://nodejs.org/dist/). Use the default or set `check-latest` to `false` if you prefer stability and if you want to ensure a specific version of Node.js is always used.
 
@@ -19,7 +19,7 @@ steps:
 - run: npm test
 ```
 
-### Architecture:
+### Architecture
 
 You can use any of the [supported operating systems](https://docs.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners), and the compatible `architecture` can be selected using `architecture`. Values are `x86`, `x64`, `arm64`, `armv6l`, `armv7l`, `ppc64le`, `s390x` (not all of the architectures are available on all platforms).
 
@@ -39,7 +39,37 @@ jobs:
       - run: npm test
 ```
 
-### Multiple Operating Systems and Architectures:
+### Caching packages dependencies
+
+**Using wildcard patterns to cache dependencies**
+```yaml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: '14'
+    cache: 'npm'
+    cache-dependency-path: '**/package-lock.json'
+- run: npm install
+- run: npm test
+```
+
+**Using a list of file paths to cache dependencies**
+```yaml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: '14'
+    cache: 'npm'
+    cache-dependency-path: |
+      server/app/package-lock.json
+      frontend/app/package-lock.json
+- run: npm install
+- run: npm test
+```
+
+### Multiple Operating Systems and Architectures
 
 ```yaml
 jobs:
@@ -74,7 +104,7 @@ jobs:
       - run: npm test
 ```
 
-### Publish to npmjs and GPR with npm:
+### Publish to npmjs and GPR with npm
 ```yaml
 steps:
 - uses: actions/checkout@v2
@@ -94,7 +124,7 @@ steps:
     NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 ```
 
-### Publish to npmjs and GPR with yarn:
+### Publish to npmjs and GPR with yarn
 ```yaml
 steps:
 - uses: actions/checkout@v2
@@ -114,7 +144,7 @@ steps:
     NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 ```
 
-### Use private packages:
+### Use private packages
 ```yaml
 steps:
 - uses: actions/checkout@v2

Diff for: docs/advanced-usage.md

@@ -11,7 +11,10 @@ import {
   PackageManagerInfo
 } from './cache-utils';
 
-export const restoreCache = async (packageManager: string) => {
+export const restoreCache = async (
+  packageManager: string,
+  cacheDependencyPath?: string
+) => {
   const packageManagerInfo = await getPackageManagerInfo(packageManager);
   if (!packageManagerInfo) {
     throw new Error(`Caching for '${packageManager}' is not supported`);
@@ -22,9 +25,17 @@ export const restoreCache = async (packageManager: string) => {
     packageManagerInfo,
     packageManager
   );
-  const lockFilePath = findLockFile(packageManagerInfo);
+  const lockFilePath = cacheDependencyPath
+    ? cacheDependencyPath
+    : findLockFile(packageManagerInfo);
   const fileHash = await glob.hashFiles(lockFilePath);
 
+  if (!fileHash) {
+    throw new Error(
+      'Some specified paths were not resolved, unable to cache dependencies.'
+    );
+  }
+
   const primaryKey = `node-cache-${platform}-${packageManager}-${fileHash}`;
   core.debug(`primary key is ${primaryKey}`);
 

Diff for: src/cache-restore.ts

@@ -51,7 +51,8 @@ export async function run() {
       if (isGhes()) {
         throw new Error('Caching is not supported on GHES');
       }
-      await restoreCache(cache);
+      const cacheDependencyPath = core.getInput('cache-dependency-path');
+      await restoreCache(cache, cacheDependencyPath);
     }
 
     const matchersPath = path.join(__dirname, '../..', '.github');