Make 3+ verbose level turn on engine echo (#37)

Author: msg555

subsetter/__main__.py

@@ -6,7 +6,7 @@
 
 import yaml
 
-from subsetter.config_model import SubsetterConfig
+from subsetter.config_model import DatabaseOutputConfig, SubsetterConfig
 from subsetter.plan_model import SubsetPlan
 from subsetter.planner import Planner
 from subsetter.sampler import Sampler
@@ -128,7 +128,7 @@ def _dict_merge(lhs, rhs):
                     exc_info=args.verbose > 1,
                 )
                 sys.exit(1)
-        return SubsetterConfig.model_validate(config_data)
+        config = SubsetterConfig.model_validate(config_data)
     except ValueError as exc:
         LOGGER.error(
             "Unexpected subsetter config file format: %s",
@@ -137,6 +137,13 @@ def _dict_merge(lhs, rhs):
         )
         sys.exit(1)
 
+    if args.verbose > 2:
+        config.source.echo = True
+        if config.sampler and isinstance(config.sampler.output, DatabaseOutputConfig):
+            config.sampler.output.echo = True
+
+    return config
+
 
 def _main_plan(args):
     config = _get_config(args)

subsetter/common.py

@@ -164,6 +164,7 @@ def get_connect_args(
     sqlite_databases: Optional[Dict[str, str]] = {}
     isolation_level: Optional[IsolationLevel] = None
     ssl: SSLConfig = SSLConfig()
+    echo: bool = False
 
     def database_url(
         self,
@@ -198,6 +199,7 @@ def database_engine(
                 self.dialect or DEFAULT_DIALECT,
                 env_prefix=env_prefix,
             ),
+            echo=self.echo,
         )
 
         @sa.event.listens_for(engine, "connect")