Handle Additional GitHub secondary rate limit failure

.release-notes/68.md

@@ -0,0 +1,3 @@
+## Handle Additional GitHub secondary rate limit failure
+
+In our previous version, we added support for retrying when a secondary rate limit failure occurred. However, since that time, we have seen secondary rate limit failures that are not handled by the previous fix. This update adds a retry for the one time we know that the limit can be triggered. If the rate limit is triggered, the bot will wait for 30 seconds before trying again. If it encounters 5 failures, it will give up and quit.

entrypoint.py

@@ -12,6 +12,7 @@
 from git.exc import GitCommandError
 from github import Github
 from github.GithubException import RateLimitExceededException
+from github.GithubException import GithubException
 
 CHANGELOG_LABELS = ['changelog - added',
                     'changelog - changed',
@@ -67,6 +68,20 @@
         else:
             print(ERROR + "Search failed again. Giving up." + ENDC)
             raise
+    except GithubException as e:
+        if "You have exceeded a secondary rate limit" in e.data['message']:
+            search_failures += 1
+            if search_failures <= 5:
+                print(NOTICE
+                    + "Search failed due to secondary rate limit exceeded. "
+                    + "Sleeping and trying again."
+                    + ENDC)
+                time.sleep(30)
+            else:
+                print(ERROR + "Search failed again. Giving up." + ENDC)
+                raise
+        else:
+            raise
 
 repo = github.get_repo(repo_name)
 pull_request = repo.get_pull(pr_id)