feat(telemetry): Refactor "telemetry.py" to "telemetry/recording/__init__.py" to unblock further telemetry improvements.

src/google/adk/flows/llm_flows/base_llm_flow.py

@@ -36,9 +36,9 @@
 from ...models.base_llm_connection import BaseLlmConnection
 from ...models.llm_request import LlmRequest
 from ...models.llm_response import LlmResponse
-from ...telemetry import trace_call_llm
-from ...telemetry import trace_send_data
-from ...telemetry import tracer
+from ...telemetry.recording import trace_call_llm
+from ...telemetry.recording import trace_send_data
+from ...telemetry.recording import tracer
 from ...tools.tool_context import ToolContext
 from . import functions
 

src/google/adk/flows/llm_flows/functions.py

@@ -32,9 +32,9 @@
 from ...auth.auth_tool import AuthToolArguments
 from ...events.event import Event
 from ...events.event_actions import EventActions
-from ...telemetry import trace_tool_call
-from ...telemetry import trace_tool_response
-from ...telemetry import tracer
+from ...telemetry.recording import trace_tool_call
+from ...telemetry.recording import trace_tool_response
+from ...telemetry.recording import tracer
 from ...tools.base_tool import BaseTool
 from ...tools.tool_context import ToolContext
 

src/google/adk/runners.py

@@ -40,7 +40,7 @@
 from .sessions.base_session_service import BaseSessionService
 from .sessions.in_memory_session_service import InMemorySessionService
 from .sessions.session import Session
-from .telemetry import tracer
+from .telemetry.recording import tracer
 from .tools.built_in_code_execution_tool import built_in_code_execution
 
 logger = logging.getLogger(__name__)

src/google/adk/telemetry/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2025 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.

src/google/adk/telemetry.py → src/google/adk/telemetry/recording/__init__.py

@@ -27,10 +27,10 @@
 from google.genai import types
 from opentelemetry import trace
 
-from .agents.invocation_context import InvocationContext
-from .events.event import Event
-from .models.llm_request import LlmRequest
-from .models.llm_response import LlmResponse
+from ...agents.invocation_context import InvocationContext
+from ...events.event import Event
+from ...models.llm_request import LlmRequest
+from ...models.llm_response import LlmResponse
 
 
 tracer = trace.get_tracer('gcp.vertex.agent')