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Fix: Checkout Issue in self hosted runner due to faulty submodule check-ins #1196

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merged 6 commits into from Apr 14, 2023
Merged

Fix: Checkout Issue in self hosted runner due to faulty submodule check-ins #1196

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7f14f1d
Fix Self hosted runner issue wrt bad submodules - solution cleanup wo…
megamanics Mar 2, 2023
39cfb84
Fix format with npm run format output
megamanics Mar 2, 2023
d12863b
Add mock implementation for new function submoduleStatus
megamanics Mar 2, 2023
c8466ed
Merge branch 'main' into megamanics/main
Link- Mar 9, 2023
bb965fa
Add 2 test cases for submodule status.
sminnie Mar 19, 2023
6b84265
Codeql-Action Analyse revert v1 to v2
megamanics Apr 12, 2023
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3 changes: 3 additions & 0 deletions __test__/git-auth-helper.test.ts
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Expand Up @@ -770,6 +770,9 @@ async function setup(testName: string): Promise<void> {
return ''
}),
submoduleSync: jest.fn(),
submoduleStatus: jest.fn(async () => {
return true
}),
submoduleUpdate: jest.fn(),
tagExists: jest.fn(),
tryClean: jest.fn(),
Expand Down
62 changes: 62 additions & 0 deletions __test__/git-directory-helper.test.ts
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Expand Up @@ -281,6 +281,65 @@ describe('git-directory-helper tests', () => {
expect(git.branchDelete).toHaveBeenCalledWith(false, 'local-branch-2')
})

const cleanWhenSubmoduleStatusIsFalse =
'cleans when submodule status is false'

it(cleanWhenSubmoduleStatusIsFalse, async () => {
// Arrange
await setup(cleanWhenSubmoduleStatusIsFalse)
await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')

//mock bad submodule

const submoduleStatus = git.submoduleStatus as jest.Mock<any, any>
submoduleStatus.mockImplementation(async (remote: boolean) => {
return false
})

// Act
await gitDirectoryHelper.prepareExistingDirectory(
git,
repositoryPath,
repositoryUrl,
clean,
ref
)

// Assert
const files = await fs.promises.readdir(repositoryPath)
expect(files).toHaveLength(0)
expect(git.tryClean).toHaveBeenCalled()
})

const doesNotCleanWhenSubmoduleStatusIsTrue =
'does not clean when submodule status is true'

it(doesNotCleanWhenSubmoduleStatusIsTrue, async () => {
// Arrange
await setup(doesNotCleanWhenSubmoduleStatusIsTrue)
await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')

const submoduleStatus = git.submoduleStatus as jest.Mock<any, any>
submoduleStatus.mockImplementation(async (remote: boolean) => {
return true
})

// Act
await gitDirectoryHelper.prepareExistingDirectory(
git,
repositoryPath,
repositoryUrl,
clean,
ref
)

// Assert

const files = await fs.promises.readdir(repositoryPath)
expect(files.sort()).toEqual(['.git', 'my-file'])
expect(git.tryClean).toHaveBeenCalled()
})

const removesLockFiles = 'removes lock files'
it(removesLockFiles, async () => {
// Arrange
Expand Down Expand Up @@ -423,6 +482,9 @@ async function setup(testName: string): Promise<void> {
submoduleForeach: jest.fn(),
submoduleSync: jest.fn(),
submoduleUpdate: jest.fn(),
submoduleStatus: jest.fn(async () => {
return true
}),
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tagExists: jest.fn(),
tryClean: jest.fn(async () => {
return true
Expand Down
12 changes: 12 additions & 0 deletions dist/index.js
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Expand Up @@ -765,6 +765,13 @@ class GitCommandManager {
yield this.execGit(args);
});
}
submoduleStatus() {
return __awaiter(this, void 0, void 0, function* () {
const output = yield this.execGit(['submodule', 'status'], true);
core.debug(output.stdout);
return output.exitCode === 0;
});
}
tagExists(pattern) {
return __awaiter(this, void 0, void 0, function* () {
const output = yield this.execGit(['tag', '--list', pattern]);
Expand Down Expand Up @@ -1023,6 +1030,11 @@ function prepareExistingDirectory(git, repositoryPath, repositoryUrl, clean, ref
}
}
core.endGroup();
// Check for submodules and delete any existing files if submodules are present
if (!(yield git.submoduleStatus())) {
remove = true;
core.info('Bad Submodules found, removing existing files');
}
// Clean
if (clean) {
core.startGroup('Cleaning the repository');
Expand Down
7 changes: 7 additions & 0 deletions src/git-command-manager.ts
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Expand Up @@ -41,6 +41,7 @@ export interface IGitCommandManager {
submoduleForeach(command: string, recursive: boolean): Promise<string>
submoduleSync(recursive: boolean): Promise<void>
submoduleUpdate(fetchDepth: number, recursive: boolean): Promise<void>
submoduleStatus(): Promise<boolean>
tagExists(pattern: string): Promise<boolean>
tryClean(): Promise<boolean>
tryConfigUnset(configKey: string, globalConfig?: boolean): Promise<boolean>
Expand Down Expand Up @@ -357,6 +358,12 @@ class GitCommandManager {
await this.execGit(args)
}

async submoduleStatus(): Promise<boolean> {
const output = await this.execGit(['submodule', 'status'], true)
core.debug(output.stdout)
return output.exitCode === 0
}

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for more info on the git submodule command, see: https://git-scm.com/docs/git-submodule#Documentation/git-submodule.txt-status--cached--recursive--ltpathgt82308203

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@jww3 jww3 Apr 12, 2023 •
edited

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As far as I can tell (lots of googling and some experimentation with the git command line), git submodule status always returns an exit code of 0.

What am I missing here? I'd like to see for myself a case where git submodule status returns a non-zero exit code. Is there an easy way to demonstrate it?

In other words, what's the easiest way to "corrupt" a submodule?

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@jww3 This can be recreated by cloning https://github.com/test-SKi/test-bad-module-clone & using checkout action with any self-hosted runner to see the failure.

Steps to recreate one scenario:

git checkout -b new
git clone git@github.com:test-SKi/submodule-repo.git
echo "recreate bad submodule issue" >>  README.md
git add .
git commit
git push --set-upstream origin new

async tagExists(pattern: string): Promise<boolean> {
const output = await this.execGit(['tag', '--list', pattern])
return !!output.stdout.trim()
Expand Down
6 changes: 6 additions & 0 deletions src/git-directory-helper.ts
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Expand Up @@ -81,6 +81,12 @@ export async function prepareExistingDirectory(
}
core.endGroup()

// Check for submodules and delete any existing files if submodules are present
if (!(await git.submoduleStatus())) {
remove = true
core.info('Bad Submodules found, removing existing files')
}

// Clean
if (clean) {
core.startGroup('Cleaning the repository')
Expand Down