feat(backend): add config.log_sql (enables sql trace logging)

invokeai/app/api/dependencies.py

@@ -76,8 +76,9 @@ class ApiDependencies:
 
         logger.info(f"Using database at {db_location}")
         db_conn = sqlite3.connect(db_location, check_same_thread=False)  # TODO: figure out a better threading solution
-        # enable logging of SQL statements
-        # db_conn.set_trace_callback(print)
+
+        if config.log_sql:
+            db_conn.set_trace_callback(print)
         db_conn.execute("PRAGMA foreign_keys = ON;")
 
         graph_execution_manager = SqliteItemStorage[GraphExecutionState](

invokeai/app/services/config/invokeai_config.py

@@ -234,6 +234,7 @@ class InvokeAIAppConfig(InvokeAISettings):
     # note - would be better to read the log_format values from logging.py, but this creates circular dependencies issues
     log_format          : Literal['plain', 'color', 'syslog', 'legacy'] = Field(default="color", description='Log format. Use "plain" for text-only, "color" for colorized output, "legacy" for 2.3-style logging and "syslog" for syslog-style', category="Logging")
     log_level           : Literal["debug", "info", "warning", "error", "critical"] = Field(default="info", description="Emit logging messages at this level or  higher", category="Logging")
+    log_sql             : bool = Field(default=False, description="Log SQL queries", category="Logging")
 
     dev_reload          : bool = Field(default=False, description="Automatically reload when Python sources are changed.", category="Development")