Reload uWSGI workers when files change

docker/watch_simple.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+"""
+Simple file watcher using stat() instead of watchdog (no external deps).
+Watches core/ and app/ for changes and restarts ur_gia.
+"""
+import os
+import sys
+import time
+import subprocess
+
+
+def get_mtime(path):
+    """Recursively get the most recent mtime in a directory tree."""
+    max_mtime = 0
+    for root, dirs, files in os.walk(path):
+        # Skip pycache and hidden dirs
+        dirs[:] = [d for d in dirs if not d.startswith('.') and d != '__pycache__']
+        for file in files:
+            if file.endswith(('.pyc', '.pyo')):
+                continue
+            try:
+                mtime = os.path.getmtime(os.path.join(root, file))
+                max_mtime = max(max_mtime, mtime)
+            except OSError:
+                pass
+    return max_mtime
+
+
+def restart_ur():
+    """Restart ur_gia container."""
+    print(f'[{time.strftime("%H:%M:%S")}] Restarting ur_gia...', flush=True)
+    result = subprocess.run(
+        'podman restart ur_gia 2>/dev/null || docker restart ur_gia 2>/dev/null',
+        shell=True,
+        capture_output=True,
+    )
+    if result.returncode == 0:
+        print(f'[{time.strftime("%H:%M:%S")}] ur_gia restarted', flush=True)
+    else:
+        print(f'[{time.strftime("%H:%M:%S")}] restart failed', flush=True)
+
+
+def main():
+    paths = ['/code/GIA/core', '/code/GIA/app']
+    last_mtimes = {}
+
+    for path in paths:
+        if os.path.exists(path):
+            print(f'Watching: {path}', flush=True)
+            last_mtimes[path] = get_mtime(path)
+        else:
+            print(f'Not found: {path}', flush=True)
+
+    print(f'[{time.strftime("%H:%M:%S")}] Watcher started', flush=True)
+    restart_debounce = 0
+
+    try:
+        while True:
+            time.sleep(2)
+            restart_debounce -= 2
+
+            for path in paths:
+                if not os.path.exists(path):
+                    continue
+                current_mtime = get_mtime(path)
+                if current_mtime > last_mtimes.get(path, 0):
+                    print(f'[{time.strftime("%H:%M:%S")}] Changes in {path}', flush=True)
+                    last_mtimes[path] = current_mtime
+                    if restart_debounce <= 0:
+                        restart_ur()
+                        restart_debounce = 5  # Don't restart more than every 5s
+    except KeyboardInterrupt:
+        print('Watcher stopped', flush=True)
+        sys.exit(0)
+
+
+if __name__ == '__main__':
+    main()