Update adk sample to use --otel_to_cloud instead of custom main.py (#446)

Author: aabmass

samples/adk-sql-agent/README.md

@@ -35,13 +35,13 @@ Configure the environment and run the sample:
 python -m venv venv/
 source venv/bin/activate
 pip install -r requirements.txt
-env $(cat opentelemetry.env | xargs) python main.py
+env $(cat opentelemetry.env | xargs) adk web --otel_to_cloud
 ```
 
 Alternatively if you have [`uv`](https://docs.astral.sh/uv/) installed:
 
 ```sh
-uv run --env-file opentelemetry.env main.py
+uv run --env-file opentelemetry.env adk web --otel_to_cloud
 ```
 
 ## Viewing the results

samples/adk-sql-agent/main.py

@@ -1,2 +1,6 @@
+OTEL_SERVICE_NAME=adk-sql-agent
 OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED=true
 OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT=true
+
+# Prevent ADK instrumentation from overwhelming span attribute limits. This will be the default in the future.
+ADK_CAPTURE_MESSAGE_CONTENT_IN_SPANS=false

samples/adk-sql-agent/opentelemetry.env

@@ -19,13 +19,11 @@ description = "An ADK agent that can run queries on an ephemeral SQLite database
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
-    "google-adk>=1.6.1",
+    "google-adk>=1.17.0",
     "opentelemetry-exporter-gcp-logging>=1.9.0a0",
     "opentelemetry-exporter-gcp-monitoring>=1.9.0a0",
     "opentelemetry-exporter-otlp-proto-grpc>=1.33.0",
-    "opentelemetry-instrumentation-google-genai>=0.2b0",
-    "opentelemetry-instrumentation-httpx>=0.54b0",
-    "opentelemetry-instrumentation-requests>=0.54b0",
+    "opentelemetry-instrumentation-google-genai>=0.4b0",
     "opentelemetry-instrumentation-sqlite3>=0.54b0",
     "opentelemetry-instrumentation-vertexai>=2.0b0",
 ]