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78 lines
3.0 KiB
Python
78 lines
3.0 KiB
Python
# Copyright 2025 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 os
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from google.adk.agents.llm_agent import LlmAgent
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from google.adk.auth.auth_credential import AuthCredentialTypes
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from google.adk.tools.spanner.settings import Capabilities
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from google.adk.tools.spanner.settings import SpannerToolSettings
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from google.adk.tools.spanner.spanner_credentials import SpannerCredentialsConfig
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from google.adk.tools.spanner.spanner_toolset import SpannerToolset
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import google.auth
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# Define an appropriate credential type
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CREDENTIALS_TYPE = AuthCredentialTypes.OAUTH2
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# Define Spanner tool config with read capability set to allowed.
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tool_settings = SpannerToolSettings(capabilities=[Capabilities.DATA_READ])
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if CREDENTIALS_TYPE == AuthCredentialTypes.OAUTH2:
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# Initiaze the tools to do interactive OAuth
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# The environment variables OAUTH_CLIENT_ID and OAUTH_CLIENT_SECRET
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# must be set
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credentials_config = SpannerCredentialsConfig(
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client_id=os.getenv("OAUTH_CLIENT_ID"),
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client_secret=os.getenv("OAUTH_CLIENT_SECRET"),
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scopes=[
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"https://www.googleapis.com/auth/spanner.admin",
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"https://www.googleapis.com/auth/spanner.data",
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],
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)
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elif CREDENTIALS_TYPE == AuthCredentialTypes.SERVICE_ACCOUNT:
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# Initialize the tools to use the credentials in the service account key.
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# If this flow is enabled, make sure to replace the file path with your own
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# service account key file
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# https://cloud.google.com/iam/docs/service-account-creds#user-managed-keys
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creds, _ = google.auth.load_credentials_from_file("service_account_key.json")
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credentials_config = SpannerCredentialsConfig(credentials=creds)
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else:
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# Initialize the tools to use the application default credentials.
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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 = SpannerCredentialsConfig(
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credentials=application_default_credentials
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)
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spanner_toolset = SpannerToolset(
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credentials_config=credentials_config, spanner_tool_settings=tool_settings
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)
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# The variable name `root_agent` determines what your root agent is for the
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# debug CLI
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root_agent = LlmAgent(
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model="gemini-2.5-flash",
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name="spanner_agent",
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description=(
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"Agent to answer questions about Spanner database tables and"
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" execute SQL queries."
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),
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instruction="""\
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You are a data agent with access to several Spanner tools.
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Make use of those tools to answer the user's questions.
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""",
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tools=[spanner_toolset],
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)
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