Added separate parameter for submodules fetch depth

__test__/git-auth-helper.test.ts

@@ -763,6 +763,7 @@ async function setup(testName: string): Promise<void> {
     lfs: false,
     submodules: false,
     nestedSubmodules: false,
+    submodulesFetchDepth: 1,
     persistCredentials: true,
     ref: 'refs/heads/main',
     repositoryName: 'my-repo',

__test__/input-helper.test.ts

@@ -75,6 +75,7 @@ describe('input-helper tests', () => {
     expect(settings.commit).toBeTruthy()
     expect(settings.commit).toBe('1234567890123456789012345678901234567890')
     expect(settings.fetchDepth).toBe(1)
+    expect(settings.submodulesFetchDepth).toBe(1)
     expect(settings.lfs).toBe(false)
     expect(settings.ref).toBe('refs/heads/some-ref')
     expect(settings.repositoryName).toBe('some-repo')
@@ -123,4 +124,18 @@ describe('input-helper tests', () => {
     expect(settings.ref).toBe('refs/heads/some-other-ref')
     expect(settings.commit).toBeFalsy()
   })
+
+  it('sets submodulesFetchDepth independently from fetchDepth', () => {
+    inputs['fetch-depth'] = '10'
+    inputs['submodules-fetch-depth'] = '20'
+
+    const settings: IGitSourceSettings = inputHelper.getInputs()
+    expect(settings.submodulesFetchDepth).toBe(20)
+  })
+
+  it('sets submodulesFetchDepth equal to fetchDepth by default', () => {
+    inputs['fetch-depth'] = '10'
+    const settings: IGitSourceSettings = inputHelper.getInputs()
+    expect(settings.submodulesFetchDepth).toBe(10)
+  })
 })

action.yml

@@ -68,6 +68,8 @@ inputs:
       When the `ssh-key` input is not provided, SSH URLs beginning with `git@github.com:` are
       converted to HTTPS.
     default: false
+  submodules-fetch-depth:
+    description: 'Number of commits to fetch for submodules. If not present defaults to fetch-depth'
 runs:
   using: node12
   main: dist/index.js

dist/index.js

@@ -6255,7 +6255,7 @@ function getSource(settings) {
                     // Checkout submodules
                     core.startGroup('Fetching submodules');
                     yield git.submoduleSync(settings.nestedSubmodules);
-                    yield git.submoduleUpdate(settings.fetchDepth, settings.nestedSubmodules);
+                    yield git.submoduleUpdate(settings.submodulesFetchDepth, settings.nestedSubmodules);
                     yield git.submoduleForeach('git config --local gc.auto 0', settings.nestedSubmodules);
                     core.endGroup();
                     // Persist credentials
@@ -14572,6 +14572,12 @@ function getInputs() {
         result.fetchDepth = 0;
     }
     core.debug(`fetch depth = ${result.fetchDepth}`);
+    // Submodules fetch depth
+    result.submodulesFetchDepth = Math.floor(Number(core.getInput('submodules-fetch-depth') || '-1'));
+    if (isNaN(result.submodulesFetchDepth) || result.submodulesFetchDepth < 0) {
+        result.submodulesFetchDepth = result.fetchDepth;
+    }
+    core.debug(`submodules fetch depth = ${result.submodulesFetchDepth}`);
     // LFS
     result.lfs = (core.getInput('lfs') || 'false').toUpperCase() === 'TRUE';
     core.debug(`lfs = ${result.lfs}`);

src/git-source-provider.ts

@@ -180,7 +180,7 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
         core.startGroup('Fetching submodules')
         await git.submoduleSync(settings.nestedSubmodules)
         await git.submoduleUpdate(
-          settings.fetchDepth,
+          settings.submodulesFetchDepth,
           settings.nestedSubmodules
         )
         await git.submoduleForeach(

src/git-source-settings.ts

@@ -49,6 +49,11 @@ export interface IGitSourceSettings {
    */
   nestedSubmodules: boolean
 
+  /**
+   * The fetch depth for submodules
+   */
+  submodulesFetchDepth: number
+
   /**
    * The auth token to use when fetching the repository
    */

src/input-helper.ts

@@ -88,6 +88,15 @@ export function getInputs(): IGitSourceSettings {
   }
   core.debug(`fetch depth = ${result.fetchDepth}`)
 
+  // Submodules fetch depth
+  result.submodulesFetchDepth = Math.floor(
+    Number(core.getInput('submodules-fetch-depth') || '-1')
+  )
+  if (isNaN(result.submodulesFetchDepth) || result.submodulesFetchDepth < 0) {
+    result.submodulesFetchDepth = result.fetchDepth
+  }
+  core.debug(`submodules fetch depth = ${result.submodulesFetchDepth}`)
+
   // LFS
   result.lfs = (core.getInput('lfs') || 'false').toUpperCase() === 'TRUE'
   core.debug(`lfs = ${result.lfs}`)