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Make async git checkout return immediately

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Once the job is dispatched the agent cloned synchronously even with
async=1, so a slow clone blew past the controller's 5s dispatch timeout
and the job was marked failed while the worker kept building. Run the
clone in the background thread and return 202 + job id right away.
This commit is contained in:
Brett Williams
2026-08-31 00:46:36 -05:00
parent cde111e584
commit 1faa544ead
1 changed files with 25 additions and 3 deletions
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agent/build_agent.py
+25 -3
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@@ -228,15 +228,18 @@ def checkout_project():
build_root = os.path.join(TMP_DIR, BUILD_DIR)
repo_dir = os.path.join(build_root, job_id)
start_time = datetime.datetime.now()
if async_mode:
os.makedirs(build_root, exist_ok=True)
_set_step(job_id, "cloning_repo", repo_url=repo_url)
system_status['status'] = "cloning_repo"
_run_checkout_build_background(job_id, repo_url, repo_dir, start_time)
return jsonify({"id": job_id, "async": True, "message": "Build started"}), 202
try:
os.makedirs(build_root, exist_ok=True)
_set_step(job_id, "cloning_repo", repo_url=repo_url)
system_status['status'] = "cloning_repo"
subprocess.check_call(['git', 'clone', repo_url, repo_dir])
system_status['status'] = "ready"
if async_mode:
_run_build_background(job_id, repo_dir, start_time)
return jsonify({"id": job_id, "async": True, "message": "Build started"}), 202
return install_and_build(repo_dir, job_id, start_time)
except Exception as e:
print(f"Error processing checkout: {e}")
@@ -251,6 +254,25 @@ def checkout_project():
if not async_mode:
build_lock.release()
def _run_checkout_build_background(job_id, repo_url, repo_dir, start_time):
"""Run git clone + install_and_build in a background thread so async
checkouts return immediately. Assumes build_lock is held; the thread
releases it when the work finishes."""
def runner():
try:
subprocess.check_call(['git', 'clone', repo_url, repo_dir])
install_and_build(repo_dir, job_id, start_time)
except Exception as e:
print(f"Background checkout/build failed for {job_id}: {e}")
system_status['status'] = "ready"
system_status['running_job'] = None
_clear_progress(job_id)
shutil.rmtree(repo_dir, ignore_errors=True)
finally:
build_lock.release()
threading.Thread(target=runner, name=f"checkout-{job_id}", daemon=True).start()
def _run_build_background(job_id, project_path, start_time):
"""Run install_and_build in a background thread. Assumes build_lock is held;
the thread releases it when the build finishes."""