[llvm] [GitHub] Add workflow to check author's commit access on new PRs (PR #123593)

[Mats Jun Larsen via llvm-commits]

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@@ -290,6 +290,32 @@ def run(self) -> bool:
         return True
 
 
+class CheckCommitAccess:
+    def __init__(self, token: str, repo: str, pr_number: int, author: str):
+        self.repo = github.Github(token).get_repo(repo)
+        self.pr = self.repo.get_issue(pr_number).as_pull_request()
+        self.author = author
+
+    def can_merge(self, user: str) -> bool:
+        try:
+            return self.repo.get_collaborator_permission(user) in ["admin", "write"]
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junlarsen wrote:

This is probably plenty sufficient, but there's also the collaborators endpoint that enumerates explicit permissions like push: https://docs.github.com/en/rest/collaborators/collaborators?apiVersion=2022-11-28#list-repository-collaborators

It does however require paginating through the list so this is probably kinder to the rate limits

https://github.com/llvm/llvm-project/pull/123593