fix: auto-rebase on merge conflict (mergeable=false)

When merge returns non-200, check mergeable flag. If false,
rebase the PR branch onto master via worktree. If rebase fails,
spawn dev-agent to resolve. Prevents infinite 405 retry loops.

Extracted try_merge_or_rebase() helper used at all 3 merge points.
This commit is contained in:
openhands 2026-03-15 10:21:40 +00:00
parent 996d197401
commit b4d14c4c98

View file

@ -29,6 +29,53 @@ log() {
printf '[%s] poll: %s\n' "$(date -u '+%Y-%m-%d %H:%M:%S UTC')" "$*" >> "$LOGFILE"
}
# HELPER: try merge, rebase if mergeable=false, then retry once
try_merge_or_rebase() {
local pr_num="$1" issue_num="$2" branch="$3"
local merge_code mergeable
merge_code=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
-H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/pulls/${pr_num}/merge" \
-d '{"Do":"merge","delete_branch_after_merge":true}')
if [ "$merge_code" = "200" ] || [ "$merge_code" = "204" ]; then
log "PR #${pr_num} merged! Closing #${issue_num}"
curl -sf -X PATCH -H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/issues/${issue_num}" -d '{"state":"closed"}' >/dev/null 2>&1 || true
curl -sf -X DELETE -H "Authorization: token ${CODEBERG_TOKEN}" \
"${API}/issues/${issue_num}/labels/in-progress" >/dev/null 2>&1 || true
matrix_send "dev" "✅ PR #${pr_num} merged! Issue #${issue_num} done." 2>/dev/null || true
return 0
fi
# Merge failed — check if it's a conflict (mergeable=false)
mergeable=$(curl -sf -H "Authorization: token ${CODEBERG_TOKEN}" \
"${API}/pulls/${pr_num}" | jq -r '.mergeable // true')
if [ "$mergeable" = "false" ]; then
log "PR #${pr_num} has conflicts — rebasing"
local worktree="/tmp/rebase-pr-${pr_num}"
rm -rf "$worktree"
if git -C "${PROJECT_REPO_ROOT}" worktree add "$worktree" "$branch" 2>/dev/null &&
git -C "$worktree" rebase "origin/${PRIMARY_BRANCH}" 2>/dev/null &&
git -C "$worktree" push --force-with-lease origin "$branch" 2>/dev/null; then
log "PR #${pr_num} rebased — CI will re-run, merge on next poll"
git -C "${PROJECT_REPO_ROOT}" worktree remove "$worktree" 2>/dev/null || true
else
log "PR #${pr_num} rebase failed — spawning dev-agent to fix"
git -C "${PROJECT_REPO_ROOT}" worktree remove --force "$worktree" 2>/dev/null || true
nohup "${SCRIPT_DIR}/dev-agent.sh" "$issue_num" >> "$LOGFILE" 2>&1 &
log "started dev-agent PID $! for PR #${pr_num} (rebase fix)"
fi
else
log "merge failed (HTTP ${merge_code}) — not a conflict, may need approval"
fi
return 1
}
# --- Check if dev-agent already running ---
if [ -f "$LOCKFILE" ]; then
LOCK_PID=$(cat "$LOCKFILE" 2>/dev/null || echo "")
@ -143,24 +190,10 @@ if [ "$ORPHAN_COUNT" -gt 0 ]; then
jq -r '[.[] | select(.state == "REQUEST_CHANGES") | select(.stale == false)] | length') || true
if [ "$CI_STATE" = "success" ] && [ "${HAS_APPROVE:-0}" -gt 0 ]; then
PR_BRANCH=$(curl -sf -H "Authorization: token ${CODEBERG_TOKEN}" \
"${API}/pulls/${HAS_PR}" | jq -r '.head.ref') || true
log "PR #${HAS_PR} approved + CI green → merging"
MERGE_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
-H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/pulls/${HAS_PR}/merge" \
-d '{"Do":"merge","delete_branch_after_merge":true}')
if [ "$MERGE_CODE" = "200" ] || [ "$MERGE_CODE" = "204" ] ; then
log "PR #${HAS_PR} merged! Closing #${ISSUE_NUM}"
curl -sf -X PATCH -H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/issues/${ISSUE_NUM}" -d '{"state":"closed"}' >/dev/null 2>&1 || true
curl -sf -X DELETE -H "Authorization: token ${CODEBERG_TOKEN}" \
"${API}/issues/${ISSUE_NUM}/labels/in-progress" >/dev/null 2>&1 || true
matrix_send "dev" "✅ PR #${HAS_PR} merged! Issue #${ISSUE_NUM} done." 2>/dev/null || true
else
log "merge failed (HTTP ${MERGE_CODE})"
fi
try_merge_or_rebase "$HAS_PR" "$ISSUE_NUM" "$PR_BRANCH"
exit 0
elif [ "$CI_STATE" = "success" ] && [ "${HAS_CHANGES:-0}" -gt 0 ]; then
@ -225,18 +258,7 @@ for i in $(seq 0 $(($(echo "$OPEN_PRS" | jq 'length') - 1))); do
# Try merge if approved + CI green
if [ "$CI_STATE" = "success" ] && [ "${HAS_APPROVE:-0}" -gt 0 ]; then
log "PR #${PR_NUM} (issue #${STUCK_ISSUE}) approved + CI green → merging"
MERGE_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
-H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/pulls/${PR_NUM}/merge" \
-d '{"Do":"merge","delete_branch_after_merge":true}')
if [ "$MERGE_CODE" = "200" ] || [ "$MERGE_CODE" = "204" ]; then
log "PR #${PR_NUM} merged! Closing #${STUCK_ISSUE}"
curl -sf -X PATCH -H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/issues/${STUCK_ISSUE}" -d '{"state":"closed"}' >/dev/null 2>&1 || true
matrix_send "dev" "✅ PR #${PR_NUM} merged! Issue #${STUCK_ISSUE} done." 2>/dev/null || true
fi
try_merge_or_rebase "$PR_NUM" "$STUCK_ISSUE" "$PR_BRANCH"
continue
fi
@ -298,19 +320,10 @@ for i in $(seq 0 $((BACKLOG_COUNT - 1))); do
jq -r '[.[] | select(.state == "REQUEST_CHANGES") | select(.stale == false)] | length') || true
if [ "$CI_STATE" = "success" ] && [ "${HAS_APPROVE:-0}" -gt 0 ]; then
EXISTING_BRANCH=$(curl -sf -H "Authorization: token ${CODEBERG_TOKEN}" \
"${API}/pulls/${EXISTING_PR}" | jq -r '.head.ref') || true
log "#${ISSUE_NUM} PR #${EXISTING_PR} approved + CI green → merging"
MERGE_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
-H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/pulls/${EXISTING_PR}/merge" \
-d '{"Do":"merge","delete_branch_after_merge":true}')
if [ "$MERGE_CODE" = "200" ] || [ "$MERGE_CODE" = "204" ] ; then
log "PR #${EXISTING_PR} merged! Closing #${ISSUE_NUM}"
curl -sf -X PATCH -H "Authorization: token ${CODEBERG_TOKEN}" \
-H "Content-Type: application/json" \
"${API}/issues/${ISSUE_NUM}" -d '{"state":"closed"}' >/dev/null 2>&1 || true
matrix_send "dev" "✅ PR #${EXISTING_PR} merged! Issue #${ISSUE_NUM} done." 2>/dev/null || true
fi
try_merge_or_rebase "$EXISTING_PR" "$ISSUE_NUM" "$EXISTING_BRANCH"
continue
elif [ "${HAS_CHANGES:-0}" -gt 0 ]; then