Google ADK

OTEL_EXPORTER_OTLP_HEADERS=cozeloop-workspace-id={CozeLoop空间ID},Authorization=Bearer {个人访问令牌或服务访问令牌}
OTEL_EXPORTER_OTLP_TRACES_ENDPOINT=https://api.coze.cn/v1/loop/opentelemetry/v1/traces
GOOGLE_API_KEY=***

import datetime
import os
from zoneinfo import ZoneInfo

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import (
    BatchSpanProcessor,
)
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from google.adk.agents import Agent
from google.adk.runners import Runner
from google.adk.sessions import InMemorySessionService
from google.genai import types

# Gemini API Key (Get from Google AI Studio: https://aistudio.google.com/app/apikey)
os.environ["GOOGLE_API_KEY"] = "***" # your google api key

# OTEL env
os.environ["OTEL_EXPORTER_OTLP_TRACES_ENDPOINT"] = "https://api.coze.cn/v1/loop/opentelemetry/v1/traces" # cozeloop otel endpoint
os.environ["OTEL_EXPORTER_OTLP_HEADERS"] = "cozeloop-workspace-id=***,Authorization=Bearer ***" # set your 'spaceID' and 'pat or sat token'

# OTEL configuration
otlp_exporter = OTLPSpanExporter(
    timeout=10,
)
trace.set_tracer_provider(TracerProvider())
trace.get_tracer_provider().add_span_processor(
    BatchSpanProcessor(otlp_exporter)
)
tracer = trace.get_tracer(__name__)

# Import and configure the automatic instrumentor from OpenInference
from openinference.instrumentation.google_adk import GoogleADKInstrumentor
GoogleADKInstrumentor().instrument()


def get_weather(city: str) -> dict:
    if city.lower() == "new york":
        return {
            "status": "success",
            "report": (
                "The weather in New York is sunny with a temperature of 25 degrees"
                " Celsius (77 degrees Fahrenheit)."
            ),
        }
    else:
        return {
            "status": "error",
            "error_message": f"Weather information for '{city}' is not available.",
        }


def get_current_time(city: str) -> dict:
    if city.lower() == "new york":
        tz_identifier = "America/New_York"
    else:
        return {
            "status": "error",
            "error_message": (
                f"Sorry, I don't have timezone information for {city}."
            ),
        }

    tz = ZoneInfo(tz_identifier)
    now = datetime.datetime.now(tz)
    report = (
        f'The current time in {city} is {now.strftime("%Y-%m-%d %H:%M:%S %Z%z")}'
    )
    return {"status": "success", "report": report}


async def main():
    # set custom span
    with tracer.start_as_current_span("root_span") as span:
        span.set_attribute("cozeloop.span_type", "custom")

        agent = Agent(
            name="weather_time_agent",
            model="gemini-2.0-flash",
            description=(
                "Agent to answer questions about the time and weather in a city."
            ),
            instruction=(
                "You are a helpful agent who can answer user questions about the time and weather in a city."
            ),
            tools=[get_weather, get_current_time],
        )

        APP_NAME = "weather_time_app"
        USER_ID = "demo-user"
        SESSION_ID = "demo-session"

        # start ADK workflow
        session_service = InMemorySessionService()
        runner = Runner(agent=agent, app_name=APP_NAME, session_service=session_service)
        await session_service.create_session(app_name=APP_NAME, user_id=USER_ID, session_id=SESSION_ID)
        user_msg = types.Content(role="user", parts=[types.Part(text="What is the weather in New York?")])
        async for event in runner.run_async(user_id=USER_ID, session_id=SESSION_ID, new_message=user_msg):
            if event.is_final_response():
                print(event.content.parts[0].text)


if __name__ == "__main__":
    import asyncio

    asyncio.run(main())

# 设置自定义Span节点 root_span
with tracer.start_as_current_span("root_span") as span:
    span.set_attribute("cozeloop.span_type", "custom")

    # init Agent
    agent = Agent(
    name="weather_time_agent",
    model="gemini-2.0-flash",
    description=(
        "Agent to answer questions about the time and weather in a city."
    ),
    instruction=(
        "You are a helpful agent who can answer user questions about the time and weather in a city."
    ),
    tools=[get_weather, get_current_time],
        )

    APP_NAME = "weather_time_app"
    USER_ID = "demo-user"
    SESSION_ID = "demo-session"

    # start ADK workflow, use run_async 
    session_service = InMemorySessionService()
    runner = Runner(agent=agent, app_name=APP_NAME, session_service=session_service)
    await session_service.create_session(app_name=APP_NAME, user_id=USER_ID, session_id=SESSION_ID)
    user_msg = types.Content(role="user", parts=[types.Part(text="What is the weather in New York?")])
    async for event in runner.run_async(user_id=USER_ID, session_id=SESSION_ID, new_message=user_msg):
        if event.is_final_response():
                print(event.content.parts[0].text)