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feat: skip action gracefully for workflow validation errors (#460)

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* feat: skip action gracefully for workflow validation errors

Handle workflow_not_found_on_default_branch and workflow_content_mismatch
errors by skipping the action with a warning instead of failing. This
improves user experience when adding Claude Code workflows to new
repositories or making workflow changes in PRs.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Update src/github/token.ts

---------

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Ashwin Bhat
2025-08-18 10:50:15 -07:00
committed by GitHub
parent 02e9ed3181
commit e89411bb6f
2 changed files with 27 additions and 1 deletions
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26
src/github/token.ts
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@@ -31,8 +31,33 @@ async function exchangeForAppToken(oidcToken: string): Promise<string> {
const responseJson = (await response.json()) as {
error?: {
message?: string;
details?: {
error_code?: string;
};
};
type?: string;
message?: string;
};
// Check for specific workflow validation error codes that should skip the action
const errorCode = responseJson.error?.details?.error_code;
if (
errorCode === "workflow_not_found_on_default_branch" ||
errorCode === "workflow_content_mismatch"
) {
const message =
responseJson.message ??
responseJson.error?.message ??
"Workflow validation failed";
core.warning(`Skipping action due to workflow validation: ${message}`);
console.log(
"Action skipped due to workflow validation error. This is expected when adding Claude Code workflows to new repositories or on PRs with workflow changes.",
);
core.setOutput("skipped_due_to_workflow_validation_mismatch", "true");
process.exit(0);
}
console.error(
`App token exchange failed: ${response.status} ${response.statusText} - ${responseJson?.error?.message ?? "Unknown error"}`,
);
@@ -77,6 +102,7 @@ export async function setupGitHubToken(): Promise<string> {
core.setOutput("GITHUB_TOKEN", appToken);
return appToken;
} catch (error) {
// Only set failed if we get here - workflow validation errors will exit(0) before this
core.setFailed(
`Failed to setup GitHub token: ${error}\n\nIf you instead wish to use this action with a custom GitHub token or custom GitHub app, provide a \`github_token\` in the \`uses\` section of the app in your workflow yml file.`,
);