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Retry gh api on transient failures in classify-pr action #108

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Merged
mtfishman merged 1 commit into from
May 6, 2026
Merged

Retry gh api on transient failures in classify-pr action #108

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21 changes: 20 additions & 1 deletion .github/actions/classify-pr/action.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,26 @@ runs:
echo "triggers=true" >> "$GITHUB_OUTPUT"
exit 0
fi
files=$(gh api --paginate "repos/${REPO}/pulls/${PR_NUMBER}/files" --jq '.[].filename')
# Retry the API call on transient failures. GitHub's API
# occasionally returns a 5xx HTML error page, which causes
# `gh api --jq` to exit non-zero with a JSON parse error like
# `invalid character '<' looking for beginning of value`. A
# short retry loop with backoff lets transient flakes recover
# without flunking the run.
attempt=1
while :; do
if files=$(gh api --paginate "repos/${REPO}/pulls/${PR_NUMBER}/files" --jq '.[].filename'); then
break
fi
if [ "$attempt" -ge 3 ]; then
echo "classify-pr: gh api failed after 3 attempts" >&2
exit 1
fi
delay=$((2 ** attempt))
echo "classify-pr: gh api attempt $attempt failed; retrying in ${delay}s..." >&2
sleep "$delay"
attempt=$((attempt + 1))
done
if [ -z "$files" ]; then
echo "No files reported for PR #${PR_NUMBER}; defaulting to triggers=true."
echo "triggers=true" >> "$GITHUB_OUTPUT"
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