logging fix

unified-worker/unified_worker.py

@@ -139,11 +139,20 @@ sqs = boto3.client('sqs', region_name=config.aws_region)
 s3 = boto3.client('s3', region_name=config.aws_region)
 ses = boto3.client('ses', region_name=config.aws_region)
 
-# DynamoDB
+# DynamoDB - initialized lazily
 dynamodb = boto3.resource('dynamodb', region_name=config.aws_region)
 DYNAMODB_AVAILABLE = False
 rules_table = None
 messages_table = None
+_dynamodb_initialized = False
+
+def init_dynamodb():
+    """Initialize DynamoDB tables (called once from main)"""
+    global DYNAMODB_AVAILABLE, rules_table, messages_table, _dynamodb_initialized
+    
+    if _dynamodb_initialized:
+        return
+    _dynamodb_initialized = True
     
     try:
         rules_table = dynamodb.Table(config.rules_table)
@@ -1268,15 +1277,20 @@ def start_health_server(worker: UnifiedWorker):
 # ENTRY POINT
 # ============================================
 
-# Global flag to prevent double execution
-_worker_started = False
-
 def main():
-    global _worker_started
-    if _worker_started:
-        log("⚠ Worker already started, ignoring duplicate call", 'WARNING')
-        return
-    _worker_started = True
+    # Use a lock file to prevent double execution
+    import fcntl
+    lock_file = '/tmp/unified_worker.lock'
+    
+    try:
+        lock_fd = open(lock_file, 'w')
+        fcntl.flock(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
+    except (IOError, OSError):
+        print("Another instance is already running, exiting.", flush=True)
+        sys.exit(0)
+    
+    # Initialize DynamoDB (only once)
+    init_dynamodb()
     
     worker = UnifiedWorker()