feat: allow setting agent/application name for BigQuery tools

contributing/samples/bigquery/agent.py

@@ -25,13 +25,18 @@
 # Define an appropriate credential type
 CREDENTIALS_TYPE = AuthCredentialTypes.OAUTH2
 
+# Define an appropriate application name
+BIGQUERY_AGENT_NAME = "adk_sample_bigquery_agent"
+
 
 # Define BigQuery tool config with write mode set to allowed. Note that this is
 # only to demonstrate the full capability of the BigQuery tools. In production
 # you may want to change to BLOCKED (default write mode, effectively makes the
 # tool read-only) or PROTECTED (only allows writes in the anonymous dataset of a
 # BigQuery session) write mode.
-tool_config = BigQueryToolConfig(write_mode=WriteMode.ALLOWED)
+tool_config = BigQueryToolConfig(
+    write_mode=WriteMode.ALLOWED, application_name=BIGQUERY_AGENT_NAME
+)
 
 if CREDENTIALS_TYPE == AuthCredentialTypes.OAUTH2:
   # Initiaze the tools to do interactive OAuth
@@ -64,7 +69,7 @@
 # debug CLI
 root_agent = LlmAgent(
     model="gemini-2.0-flash",
-    name="bigquery_agent",
+    name=BIGQUERY_AGENT_NAME,
     description=(
         "Agent to answer questions about BigQuery data and models and execute"
         " SQL queries."

src/google/adk/tools/bigquery/client.py

@@ -26,11 +26,16 @@
 
 
 def get_bigquery_client(
-    *, project: Optional[str], credentials: Credentials
+    *,
+    project: Optional[str],
+    credentials: Credentials,
+    user_agent: Optional[str] = None,
 ) -> bigquery.Client:
   """Get a BigQuery client."""
 
-  client_info = google.api_core.client_info.ClientInfo(user_agent=USER_AGENT)
+  user_agent = f"{USER_AGENT} {user_agent}" if user_agent else USER_AGENT
+
+  client_info = google.api_core.client_info.ClientInfo(user_agent=user_agent)
 
   bigquery_client = bigquery.Client(
       project=project, credentials=credentials, client_info=client_info

src/google/adk/tools/bigquery/config.py

@@ -15,8 +15,10 @@
 from __future__ import annotations
 
 from enum import Enum
+from typing import Optional
 
 from pydantic import BaseModel
+from pydantic import field_validator
 
 from ...utils.feature_decorator import experimental
 
@@ -58,4 +60,21 @@ class BigQueryToolConfig(BaseModel):
   max_query_result_rows: int = 50
   """Maximum number of rows to return from a query.
 
-  By default, the query result will be limited to 50 rows."""
+  By default, the query result will be limited to 50 rows.
+  """
+
+  application_name: Optional[str] = None
+  """Name of the application using the BigQuery tools.
+
+  By default, no particular application name will be set in the BigQuery
+  interaction. But if the the tool user (agent builder) wants to differentiate
+  their application/agent for tracking or support purpose, they can set this field.
+  """
+
+  @field_validator('application_name')
+  @classmethod
+  def validate_application_name(cls, v):
+    """Validate the application name."""
+    if v and ' ' in v:
+      raise ValueError('Application name should not contain spaces.')
+    return v

src/google/adk/tools/bigquery/metadata_tool.py

@@ -18,9 +18,12 @@
 from google.cloud import bigquery
 
 from . import client
+from .config import BigQueryToolConfig
 
 
-def list_dataset_ids(project_id: str, credentials: Credentials) -> list[str]:
+def list_dataset_ids(
+    project_id: str, credentials: Credentials, settings: BigQueryToolConfig
+) -> list[str]:
   """List BigQuery dataset ids in a Google Cloud project.
 
   Args:
@@ -45,7 +48,9 @@ def list_dataset_ids(project_id: str, credentials: Credentials) -> list[str]:
   """
   try:
     bq_client = client.get_bigquery_client(
-        project=project_id, credentials=credentials
+        project=project_id,
+        credentials=credentials,
+        user_agent=settings.application_name,
     )
 
     datasets = []
@@ -60,7 +65,10 @@ def list_dataset_ids(project_id: str, credentials: Credentials) -> list[str]:
 
 
 def get_dataset_info(
-    project_id: str, dataset_id: str, credentials: Credentials
+    project_id: str,
+    dataset_id: str,
+    credentials: Credentials,
+    settings: BigQueryToolConfig,
 ) -> dict:
   """Get metadata information about a BigQuery dataset.
 
@@ -111,7 +119,9 @@ def get_dataset_info(
   """
   try:
     bq_client = client.get_bigquery_client(
-        project=project_id, credentials=credentials
+        project=project_id,
+        credentials=credentials,
+        user_agent=settings.application_name,
     )
     dataset = bq_client.get_dataset(
         bigquery.DatasetReference(project_id, dataset_id)
@@ -125,7 +135,10 @@ def get_dataset_info(
 
 
 def list_table_ids(
-    project_id: str, dataset_id: str, credentials: Credentials
+    project_id: str,
+    dataset_id: str,
+    credentials: Credentials,
+    settings: BigQueryToolConfig,
 ) -> list[str]:
   """List table ids in a BigQuery dataset.
 
@@ -144,7 +157,9 @@ def list_table_ids(
   """
   try:
     bq_client = client.get_bigquery_client(
-        project=project_id, credentials=credentials
+        project=project_id,
+        credentials=credentials,
+        user_agent=settings.application_name,
     )
 
     tables = []
@@ -161,7 +176,11 @@ def list_table_ids(
 
 
 def get_table_info(
-    project_id: str, dataset_id: str, table_id: str, credentials: Credentials
+    project_id: str,
+    dataset_id: str,
+    table_id: str,
+    credentials: Credentials,
+    settings: BigQueryToolConfig,
 ) -> dict:
   """Get metadata information about a BigQuery table.
 
@@ -260,7 +279,9 @@ def get_table_info(
   """
   try:
     bq_client = client.get_bigquery_client(
-        project=project_id, credentials=credentials
+        project=project_id,
+        credentials=credentials,
+        user_agent=settings.application_name,
     )
     return bq_client.get_table(
         bigquery.TableReference(

src/google/adk/tools/bigquery/query_tool.py

@@ -80,7 +80,9 @@ def execute_sql(
   try:
     # Get BigQuery client
     bq_client = client.get_bigquery_client(
-        project=project_id, credentials=credentials
+        project=project_id,
+        credentials=credentials,
+        user_agent=settings.application_name,
     )
 
     # BigQuery connection properties where applicable

tests/unittests/tools/bigquery/test_bigquery_client.py

@@ -15,9 +15,9 @@
 from __future__ import annotations
 
 import os
-import re
 from unittest import mock
 
+import google.adk
 from google.adk.tools.bigquery.client import get_bigquery_client
 from google.auth.exceptions import DefaultCredentialsError
 from google.oauth2.credentials import Credentials
@@ -109,8 +109,8 @@ def test_bigquery_client_project_set_with_env():
       assert client.project == "test-gcp-project"
 
 
-def test_bigquery_client_user_agent():
-  """Test BigQuery client user agent."""
+def test_bigquery_client_user_agent_default():
+  """Test BigQuery client default user agent."""
   with mock.patch(
       "google.cloud.bigquery.client.Connection", autospec=True
   ) as mock_connection:
@@ -123,7 +123,33 @@ def test_bigquery_client_user_agent():
     # Verify that the tracking user agent was set
     client_info_arg = mock_connection.call_args[1].get("client_info")
     assert client_info_arg is not None
-    assert re.search(
-        r"adk-bigquery-tool google-adk/([0-9A-Za-z._\-+/]+)",
-        client_info_arg.user_agent,
+    expected_user_agents = {
+        "adk-bigquery-tool",
+        f"google-adk/{google.adk.__version__}",
+    }
+    actual_user_agents = set(client_info_arg.user_agent.split())
+    assert expected_user_agents.issubset(actual_user_agents)
+
+
+def test_bigquery_client_user_agent_custom():
+  """Test BigQuery client custom user agent."""
+  with mock.patch(
+      "google.cloud.bigquery.client.Connection", autospec=True
+  ) as mock_connection:
+    # Trigger the BigQuery client creation
+    get_bigquery_client(
+        project="test-gcp-project",
+        credentials=mock.create_autospec(Credentials, instance=True),
+        user_agent="custom_user_agent",
     )
+
+    # Verify that the tracking user agent was set
+    client_info_arg = mock_connection.call_args[1].get("client_info")
+    assert client_info_arg is not None
+    expected_user_agents = {
+        "adk-bigquery-tool",
+        f"google-adk/{google.adk.__version__}",
+        "custom_user_agent",
+    }
+    actual_user_agents = set(client_info_arg.user_agent.split())
+    assert expected_user_agents.issubset(actual_user_agents)