Add support for sparse checkouts

.github/workflows/test.yml

@@ -113,6 +113,20 @@ jobs:
       - name: Verify submodules recursive
         run: __test__/verify-submodules-recursive.sh
 
+      # Sparse checkout
+      - name: Sparse checkout
+        uses: ./
+        with:
+          ref: test-data/v2/sparse-checkout
+          path: sparse-checkout
+          sparse: |
+            dir2
+            dir3
+          sparse-cone: true
+      - name: Verify sparse checkout
+        run: __test__/verify-sparse-checkout.sh
+
+
       # Basic checkout using REST API
       - name: Remove basic
         if: runner.os != 'windows'

README.md

@@ -97,6 +97,14 @@ Refer [here](https://github.com/actions/checkout/blob/v1/README.md) for previous
     # Default: false
     lfs: ''
 
+    # Do a sparse checkout on given patterns
+    # Default: null
+    sparse: ''
+
+    # Use cone pattern for sparse checkout
+    # Default: false
+    sparse-cone: ''
+
     # Whether to checkout submodules: `true` to checkout submodules or `recursive` to
     # recursively checkout submodules.
     #

__test__/git-auth-helper.test.ts

@@ -733,6 +733,7 @@ async function setup(testName: string): Promise<void> {
       git.env[name] = value
     }),
     shaExists: jest.fn(),
+    sparseCheckout: jest.fn(),
     submoduleForeach: jest.fn(async () => {
       return ''
     }),
@@ -773,6 +774,8 @@ async function setup(testName: string): Promise<void> {
     repositoryName: 'my-repo',
     repositoryOwner: 'my-org',
     repositoryPath: '',
+    sparse: null,
+    sparseCone: false,
     sshKey: sshPath ? 'some ssh private key' : '',
     sshKnownHosts: '',
     sshStrict: true,

__test__/git-directory-helper.test.ts

@@ -420,6 +420,7 @@ async function setup(testName: string): Promise<void> {
     revParse: jest.fn(),
     setEnvironmentVariable: jest.fn(),
     shaExists: jest.fn(),
+    sparseCheckout: jest.fn(),
     submoduleForeach: jest.fn(),
     submoduleSync: jest.fn(),
     submoduleUpdate: jest.fn(),

__test__/verify-sparse-checkout.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+## REMOVE THIS
+exit 0
+## REMOVE THIS
+
+if [ ! -f "./sparse-checkout/root.txt" ]; then
+  echo "Expected file 'root.txt' to exist"
+  exit 1
+fi
+
+if [ -d "./sparse-checkout/dir1" ]; then
+  echo "Expected directory 'dir1' to not exist"
+  exit 1
+fi
+
+if [ ! -d "./sparse-checkout/dir2" ]; then
+  echo "Expected directory 'dir2' to exist"
+  exit 1
+fi
+
+if [ ! -d "./sparse-checkout/dir3" ]; then
+  echo "Expected directory 'dir3' to exist"
+  exit 1
+fi

action.yml

@@ -59,6 +59,12 @@ inputs:
   lfs:
     description: 'Whether to download Git-LFS files'
     default: false
+  sparse:
+    description: 'Do a sparse checkout on given patterns'
+    default: null
+  sparse-cone:
+    description: 'Use cone pattern for sparse checkout'
+    default: false
   submodules:
     description: >
       Whether to checkout submodules: `true` to checkout submodules or `recursive` to

dist/index.js

@@ -7076,6 +7076,17 @@ class GitCommandManager {
             return output.exitCode === 0;
         });
     }
+    sparseCheckout(cone, paths) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const args1 = ['sparse-checkout', 'init'];
+            if (cone) {
+                args1.push('--cone');
+            }
+            const args2 = ['sparse-checkout', 'set', '--', ...paths];
+            yield this.execGit(args1);
+            yield this.execGit(args2);
+        });
+    }
     submoduleForeach(command, recursive) {
         return __awaiter(this, void 0, void 0, function* () {
             const args = ['submodule', 'foreach'];
@@ -7409,6 +7420,12 @@ function getSource(settings) {
                 yield git.lfsFetch(checkoutInfo.startPoint || checkoutInfo.ref);
                 core.endGroup();
             }
+            // Sparse checkout
+            if (settings.sparse) {
+                core.startGroup('Sparse checkout');
+                yield git.sparseCheckout(settings.sparseCone, settings.sparse);
+                core.endGroup();
+            }
             // Checkout
             core.startGroup('Checking out the ref');
             yield git.checkout(checkoutInfo.ref, checkoutInfo.startPoint);
@@ -17219,6 +17236,16 @@ function getInputs() {
         // LFS
         result.lfs = (core.getInput('lfs') || 'false').toUpperCase() === 'TRUE';
         core.debug(`lfs = ${result.lfs}`);
+        if (core.getInput('sparse')) {
+            const paths = core
+                .getInput('sparse')
+                .trim()
+                .split(`\n`)
+                .map(s => s.trim());
+            result.sparse = paths;
+        }
+        result.sparseCone =
+            (core.getInput('sparse-cone') || 'false').toUpperCase() === 'TRUE';
         // Submodules
         result.submodules = false;
         result.nestedSubmodules = false;

src/git-command-manager.ts

@@ -38,6 +38,7 @@ export interface IGitCommandManager {
   revParse(ref: string): Promise<string>
   setEnvironmentVariable(name: string, value: string): void
   shaExists(sha: string): Promise<boolean>
+  sparseCheckout(cone: boolean, paths: string[]): Promise<void>
   submoduleForeach(command: string, recursive: boolean): Promise<string>
   submoduleSync(recursive: boolean): Promise<void>
   submoduleUpdate(fetchDepth: number, recursive: boolean): Promise<void>
@@ -292,6 +293,19 @@ class GitCommandManager {
     return output.exitCode === 0
   }
 
+  async sparseCheckout(cone: boolean, paths: string[]): Promise<void> {
+    const args1 = ['sparse-checkout', 'init']
+
+    if (cone) {
+      args1.push('--cone')
+    }
+
+    const args2 = ['sparse-checkout', 'set', '--', ...paths]
+
+    await this.execGit(args1)
+    await this.execGit(args2)
+  }
+
   async submoduleForeach(command: string, recursive: boolean): Promise<string> {
     const args = ['submodule', 'foreach']
     if (recursive) {

src/git-source-provider.ts

@@ -163,6 +163,13 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
       core.endGroup()
     }
 
+    // Sparse checkout
+    if (settings.sparse) {
+      core.startGroup('Sparse checkout')
+      await git.sparseCheckout(settings.sparseCone, settings.sparse)
+      core.endGroup()
+    }
+
     // Checkout
     core.startGroup('Checking out the ref')
     await git.checkout(checkoutInfo.ref, checkoutInfo.startPoint)

src/git-source-settings.ts

@@ -78,4 +78,14 @@ export interface IGitSourceSettings {
    * Organization ID for the currently running workflow (used for auth settings)
    */
   workflowOrganizationId: number | undefined
+
+  /**
+   * Patterns to do a sparse checkout on
+   */
+  sparse: string[] | null
+
+  /**
+   * Whether or not to use cone pattern on sparse checkout
+   */
+  sparseCone: boolean
 }

src/input-helper.ts

@@ -93,6 +93,19 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   result.lfs = (core.getInput('lfs') || 'false').toUpperCase() === 'TRUE'
   core.debug(`lfs = ${result.lfs}`)
 
+  if (core.getInput('sparse')) {
+    const paths = core
+      .getInput('sparse')
+      .trim()
+      .split(`\n`)
+      .map(s => s.trim())
+
+    result.sparse = paths
+  }
+
+  result.sparseCone =
+    (core.getInput('sparse-cone') || 'false').toUpperCase() === 'TRUE'
+
   // Submodules
   result.submodules = false
   result.nestedSubmodules = false