fix: avoid duplicating log in stderr.

Jacksunwei · copybara-github · commit 16d96960122d · 2025-05-27T13:28:00.000-07:00
This was introduced to work around google-auth kills all logs via `google` root logging namespace. Given we're now using `google_adk` as root logging namesapce, we don't need additional Stream log handler now.

PiperOrigin-RevId: 763924531
diff --git a/src/google/adk/cli/utils/logs.py b/src/google/adk/cli/utils/logs.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import annotations
+
 import logging
 import os
-import sys
 import tempfile
 import time
 
@@ -27,14 +28,8 @@ def setup_adk_logger(level=logging.INFO):
   # Configure the root logger format and level.
   logging.basicConfig(level=level, format=LOGGING_FORMAT)
 
-  # Set up adk_logger and log to stderr.
-  handler = logging.StreamHandler(sys.stderr)
-  handler.setLevel(level)
-  handler.setFormatter(logging.Formatter(LOGGING_FORMAT))
-
   adk_logger = logging.getLogger('google_adk')
   adk_logger.setLevel(level)
-  adk_logger.addHandler(handler)
 
 
 def log_to_tmp_folder(
