mirror of
https://github.com/google/adk-docs.git
synced 2026-09-14 16:16:59 +08:00
Milen Kovachev
ab749867b0
- Add pip install "google-adk[gcp]" step to Eventarc Prerequisites. - Clarify datacontenttype inference defaults and specify application/json in snippet prompt. - Update Runtime Lambda table entry to use ctx.session_id and note support for payload and Context. - Update OMIT table entry to list all mandatory attributes (type, source, bus, id, specversion). Addresses feedback in https://github.com/google/adk-docs/pull/2045#issuecomment-5184438669 Co-authored-by: Joe Fernandez <931947+joefernandez@users.noreply.github.com>
98 lines
3.3 KiB
Python
98 lines
3.3 KiB
Python
# Copyright 2026 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import asyncio
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import os
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from google.adk.agents import Agent
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from google.adk.integrations.eventarc import EventarcCredentialsConfig
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from google.adk.integrations.eventarc import EventarcToolConfig
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from google.adk.integrations.eventarc import EventarcToolset
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from google.adk.runners import Runner
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from google.adk.sessions import InMemorySessionService
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from google.genai import types
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import google.auth
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# Define constants for this example agent
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AGENT_NAME = "eventarc_agent"
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APP_NAME = "eventarc_app"
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USER_ID = "user1234"
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SESSION_ID = "1234"
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GEMINI_MODEL = "gemini-flash-latest"
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# Define Eventarc tool config.
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# You can optionally set the project_id here, or let the agent infer it from context/user input.
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tool_config = EventarcToolConfig(project_id=os.getenv("GOOGLE_CLOUD_PROJECT"))
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# Uses externally-managed Application Default Credentials (ADC) by default.
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# This decouples authentication from the agent / tool lifecycle.
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# https://cloud.google.com/docs/authentication/provide-credentials-adc
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application_default_credentials, _ = google.auth.default()
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credentials_config = EventarcCredentialsConfig(
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credentials=application_default_credentials
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)
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# Instantiate an Eventarc toolset
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eventarc_toolset = EventarcToolset(
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credentials_config=credentials_config, tool_config=tool_config
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)
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# Agent Definition
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root_agent = Agent(
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model=GEMINI_MODEL,
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name=AGENT_NAME,
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description=(
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"Agent to publish structured CloudEvents to Google Cloud Eventarc"
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" Message Buses."
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),
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instruction="""\
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You are a cloud integration agent with access to Google Cloud Eventarc tools.
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You can publish structured CloudEvents to Eventarc Message Buses using the publish_message tool.
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""",
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tools=[eventarc_toolset],
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)
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# Session and Runner
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session_service = InMemorySessionService()
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session = asyncio.run(
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session_service.create_session(
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app_name=APP_NAME, user_id=USER_ID, session_id=SESSION_ID
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)
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)
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runner = Runner(
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agent=root_agent, app_name=APP_NAME, session_service=session_service
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)
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# Agent Interaction
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def call_agent(query: str):
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"""Helper function to call the agent with a query."""
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content = types.Content(role="user", parts=[types.Part(text=query)])
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events = runner.run(user_id=USER_ID, session_id=SESSION_ID, new_message=content)
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print("USER:", query)
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for event in events:
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if event.is_final_response():
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final_response = event.content.parts[0].text
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print("AGENT:", final_response)
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# Example call to publish a CloudEvent
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call_agent(
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"Publish an event of type 'com.example.user.signup' to bus"
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" 'projects/my-project/locations/us-central1/messageBuses/my-bus' with data"
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" '{\"user\": \"alice\"}', datacontenttype 'application/json', and source"
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" '//my-service/auth'"
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)
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