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Detect grgsm_scanner crash-on-startup and report to UI

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grgsm_scanner exits in <300ms with osmo_fsm assertion error due to
libosmocore incompatibility. Added crash detection: if process exits
in <5s with non-zero code, counts as crash. After 3 crashes, stops
retrying and sends error to SSE stream so the UI can display it.

Also drains remaining queue items after process exits and logs exit
code and scan duration for diagnostics.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Smittix
2026-02-08 16:00:31 +00:00
parent 995bc17418
commit 15efe56762
1 changed files with 36 additions and 2 deletions
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38
routes/gsm_spy.py
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@@ -1218,6 +1218,7 @@ def scanner_thread(cmd, device_index):
strongest_tower = None
auto_monitor_triggered = False # Moved outside loop - persists across scans
scan_count = 0
crash_count = 0
process = None
try:
@@ -1266,7 +1267,8 @@ def scanner_thread(cmd, device_index):
stderr_thread.start()
# Process output with timeout
last_output = time.time()
scan_start = time.time()
last_output = scan_start
scan_timeout = 120 # 2 minute maximum per scan
while app_module.gsm_spy_scanner_running:
@@ -1326,6 +1328,15 @@ def scanner_thread(cmd, device_index):
logger.warning(f"Scan timeout after {scan_timeout}s")
break
# Drain remaining queue items after process exits
while not output_queue_local.empty():
try:
msg_type, line = output_queue_local.get_nowait()
if line:
logger.info(f"Scanner [{msg_type}] (drain): {line.strip()}")
except queue.Empty:
break
# Clean up process with timeout
if process.poll() is None:
logger.info("Terminating scanner process")
@@ -1333,7 +1344,30 @@ def scanner_thread(cmd, device_index):
else:
process.wait() # Reap zombie
logger.info(f"Scan #{scan_count} complete")
exit_code = process.returncode
scan_duration = time.time() - scan_start
logger.info(f"Scan #{scan_count} complete (exit code: {exit_code}, duration: {scan_duration:.1f}s)")
# Detect crash pattern: process exits too quickly with no data
if scan_duration < 5 and exit_code != 0:
crash_count += 1
logger.error(
f"grgsm_scanner crashed on startup (exit code: {exit_code}). "
f"Crash count: {crash_count}. Check gr-gsm/libosmocore compatibility."
)
try:
app_module.gsm_spy_queue.put_nowait({
'type': 'error',
'message': f'grgsm_scanner crashed (exit code: {exit_code}). '
'This may be a gr-gsm/libosmocore compatibility issue. '
'Try rebuilding gr-gsm from source.',
'timestamp': time.strftime('%Y-%m-%dT%H:%M:%S')
})
except queue.Full:
pass
if crash_count >= 3:
logger.error("grgsm_scanner crashed 3 times, stopping scanner")
break
except FileNotFoundError:
logger.error(