Add debug logging (dbt-labs#768)

* set snowflake connector log level on env variable

* set snowflake connector log level on env variable

* set snowflake connector log level on env variable

* add boto packages

* add logging about stting up logging

* merge paw/type-fix

* add changie

* fix event import

* add unit tests

* add unit tests

.changes/unreleased/Under the Hood-20230925-120144.yaml

@@ -0,0 +1,6 @@
+kind: Under the Hood
+body: allow for adding snowflake-python-collector logs to dbt output
+time: 2023-09-25T12:01:44.778426-07:00
+custom:
+  Author: colin-rogers-dbt
+  Issue: "768"

dbt/adapters/snowflake/connections.py

@@ -1,5 +1,7 @@
 import base64
 import datetime
+import os
+
 import pytz
 import re
 from contextlib import contextmanager
@@ -47,6 +49,12 @@
 
 
 logger = AdapterLogger("Snowflake")
+
+if os.getenv("DBT_SNOWFLAKE_CONNECTOR_DEBUG_LOGGING"):
+    for logger_name in ["snowflake.connector", "botocore", "boto3"]:
+        logger.debug(f"Setting {logger_name} to DEBUG")
+        logger.set_adapter_dependency_log_level(logger_name, "DEBUG")
+
 _TOKEN_REQUEST_URL = "https://{}.snowflakecomputing.com/oauth/token-request"
 
 ERROR_REDACTION_PATTERNS = {

tests/unit/test_connections.py

@@ -0,0 +1,25 @@
+import os
+from importlib import reload
+from unittest.mock import Mock
+import dbt.adapters.snowflake.connections as connections
+import dbt.events
+
+
+def test_connections_sets_logs_in_response_to_env_var(monkeypatch):
+    """Test that setting the DBT_SNOWFLAKE_CONNECTOR_DEBUG_LOGGING environment variable happens on import"""
+    log_mock = Mock()
+    monkeypatch.setattr(dbt.events, "AdapterLogger", Mock(return_value=log_mock))
+    monkeypatch.setattr(os, "environ", {"DBT_SNOWFLAKE_CONNECTOR_DEBUG_LOGGING": "true"})
+    reload(connections)
+
+    assert log_mock.debug.call_count == 3
+    assert log_mock.set_adapter_dependency_log_level.call_count == 3
+
+
+def test_connections_does_not_set_logs_in_response_to_env_var(monkeypatch):
+    log_mock = Mock()
+    monkeypatch.setattr(dbt.events, "AdapterLogger", Mock(return_value=log_mock))
+    reload(connections)
+
+    assert log_mock.debug.call_count == 0
+    assert log_mock.set_adapter_dependency_log_level.call_count == 0