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fix: ci_fix_count/ci_fix_increment not atomic — potential race under concurrent polls (#118)

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Wrap ci_fix_count(), ci_fix_increment(), and ci_fix_reset() with flock
on a shared lockfile to prevent concurrent modification of the JSON
tracker. Uses flock(1) in command-wrapping mode so each Python process
holds an exclusive lock for the duration of its read-modify-write cycle.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
openhands 2026-03-18 06:30:17 +00:00
parent 23364c6c01
commit 1352620c3d
1 changed files with 4 additions and 3 deletions
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7
dev/dev-poll.sh
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@ -22,13 +22,14 @@ source "$(dirname "$0")/../lib/ci-helpers.sh"
# Track CI fix attempts per PR to avoid infinite respawn loops
CI_FIX_TRACKER="${FACTORY_ROOT}/dev/ci-fixes-${PROJECT_NAME:-harb}.json"
CI_FIX_LOCK="${CI_FIX_TRACKER}.lock"
ci_fix_count() {
local pr="$1"
python3 -c "import json,sys;d=json.load(open('$CI_FIX_TRACKER')) if __import__('os').path.exists('$CI_FIX_TRACKER') else {};print(d.get(str($pr),0))" 2>/dev/null || echo 0
flock "$CI_FIX_LOCK" python3 -c "import json,sys;d=json.load(open('$CI_FIX_TRACKER')) if __import__('os').path.exists('$CI_FIX_TRACKER') else {};print(d.get(str($pr),0))" 2>/dev/null || echo 0
}
ci_fix_increment() {
local pr="$1"
python3 -c "
flock "$CI_FIX_LOCK" python3 -c "
import json,os
f='$CI_FIX_TRACKER'
d=json.load(open(f)) if os.path.exists(f) else {}
@ -38,7 +39,7 @@ json.dump(d,open(f,'w'))
}
ci_fix_reset() {
local pr="$1"
python3 -c "
flock "$CI_FIX_LOCK" python3 -c "
import json,os
f='$CI_FIX_TRACKER'
d=json.load(open(f)) if os.path.exists(f) else {}