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fix(#1408): deduplicate retro dispatches on PR merge #1412

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fix(#1408): deduplicate retro dispatches on PR merge #1412

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25 changes: 24 additions & 1 deletion internal/scaffold/fullsend-repo/.github/workflows/dispatch.yml
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
# lint-workflow-size: max-lines=390
# lint-workflow-size: max-lines=415
# Dispatcher workflow that routes events to agent workflows based on stage.
# Routing logic determines the stage from event context — the shim only
# forwards the raw event. Adding a new stage requires only a case branch
Expand Down Expand Up @@ -324,6 +324,29 @@ jobs:
comment: (.comment // null | if . then {body: .body[:4096]} else null end)
}' "$GITHUB_EVENT_PATH")

# Deduplicate retro dispatches — if a retro workflow run is
# already queued or in-progress for the same source repo + PR,
# skip this dispatch. Multiple shim runs for the same PR close
# event each call dispatch independently; this check prevents
# all but the first from launching a redundant retro run.
if [[ "$STAGE" == "retro" ]]; then
RETRO_PR=$(echo "$EVENT_PAYLOAD" | jq -r '(.pull_request.number // .issue.number) | tostring')
if [[ -n "$RETRO_PR" && "$RETRO_PR" != "null" ]]; then
ACTIVE_IDS=$(gh api "repos/${DISPATCH_REPO}/actions/workflows/retro.yml/runs?per_page=10" \
--jq '[.workflow_runs[] | select(.status == "queued" or .status == "in_progress") | .id] | .[]' 2>/dev/null || true)
for rid in $ACTIVE_IDS; do
RUN_INPUTS=$(gh api "repos/${DISPATCH_REPO}/actions/runs/${rid}" --jq '.inputs' 2>/dev/null || echo '{}')
RUN_SRC=$(echo "$RUN_INPUTS" | jq -r '.source_repo // empty')
RUN_PR=$(echo "$RUN_INPUTS" | jq -r '.event_payload' 2>/dev/null \
| jq -r '(.pull_request.number // .issue.number) | tostring' 2>/dev/null || true)
if [[ "$RUN_SRC" == "$SOURCE_REPO" && "$RUN_PR" == "$RETRO_PR" ]]; then
echo "::notice::Retro already active for ${SOURCE_REPO}#${RETRO_PR} (run ${rid}) — skipping duplicate dispatch"
exit 0
fi
done
fi
fi

echo "Scanning for workflows with stage: $STAGE"

dispatched=0
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