Fix: Give aiplatform logging its own log namespace, let the user conf…

…igure their own root logger (#1081)

* Don't throw exception when getting representation of GCA resources not yet created

* Fixes for PR feedback

* Linted changes

* Fixes for PR feedback

* Linted changes

* Base.py no longer sets root logger config

* Added logging tests

* Removed dangerous pattern encouraging setting of custom logger namespace names

* Blacken formatting changes

* Added python 3.6 compatability for setting stream handler

* Removed unused imports

* Revert "Removed dangerous pattern encouraging setting of custom logger namespace names"

This reverts commit 35fdda8.

* Removed optional logger name param

* Added explicit __name__ as param for test

* Rerun tests

Co-authored-by: Sam Goodman <goodmansam@google.com>
Co-authored-by: Karl Weinmeister <11586922+kweinmeister@users.noreply.github.com>

google/cloud/aiplatform/base.py

@@ -47,22 +47,26 @@
 from google.cloud.aiplatform.compat.types import encryption_spec as gca_encryption_spec
 from google.protobuf import json_format
 
-logging.basicConfig(level=logging.INFO, stream=sys.stdout)
-
 # This is the default retry callback to be used with get methods.
 _DEFAULT_RETRY = retry.Retry()
 
 
 class Logger:
     """Logging wrapper class with high level helper methods."""
 
-    def __init__(self, name: str = ""):
-        """Initializes logger with name.
+    def __init__(self, name: str):
+        """Initializes logger with optional name.
 
         Args:
             name (str): Name to associate with logger.
         """
         self._logger = logging.getLogger(name)
+        self._logger.setLevel(logging.INFO)
+
+        handler = logging.StreamHandler(sys.stdout)
+        handler.setLevel(logging.INFO)
+
+        self._logger.addHandler(handler)
 
     def log_create_with_lro(
         self,

tests/unit/aiplatform/test_logging.py

@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from google.cloud.aiplatform import base
+import logging
+
+
+class TestLogging:
+    def test_no_root_logging_handler_override(self, caplog):
+        # Users should be able to control the root logger in their apps
+        # The aiplatform module import should not override their root logger config
+        caplog.set_level(logging.DEBUG)
+
+        logging.debug("Debug level")
+        logging.info("Info level")
+        logging.critical("Critical level")
+
+        assert "Debug level\n" in caplog.text
+        assert "Info level\n" in caplog.text
+        assert "Critical level\n" in caplog.text
+
+    def test_log_level_coexistance(self, caplog):
+        # The aiplatform module and the root logger can have different log levels.
+        aip_logger = base.Logger(__name__)
+
+        caplog.set_level(logging.DEBUG)
+
+        logging.debug("This should exist")
+        logging.info("This should too")
+
+        aip_logger.info("This should also exist")
+        aip_logger.debug("This should NOT exist")
+
+        assert "This should exist\n" in caplog.text
+        assert "This should too\n" in caplog.text
+        assert "This should also exist\n" in caplog.text
+        assert "This should NOT exist\n" not in caplog.text