mirror of
https://github.com/google/adk-docs.git
synced 2026-09-14 16:16:59 +08:00
Ivan Cheung
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
// 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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package main
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import (
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"context"
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"fmt"
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"log"
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"google.golang.org/adk/agent"
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"google.golang.org/adk/agent/llmagent"
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"google.golang.org/adk/model/gemini"
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"google.golang.org/adk/runner"
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"google.golang.org/adk/session"
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"google.golang.org/adk/tool"
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"google.golang.org/adk/tool/functiontool"
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"google.golang.org/genai"
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)
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func main() {
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ctx := context.Background()
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model, err := gemini.NewModel(ctx, "gemini-2.0-flash", &genai.ClientConfig{})
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if err != nil {
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log.Fatal(err)
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}
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userPreferenceTool, err := functiontool.New(
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functiontool.Config{
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Name: "update_user_preference",
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Description: "Updates a user-specific preference.",
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},
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updateUserPreference,
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)
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if err != nil {
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log.Fatal(err)
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}
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mainAgent, err := llmagent.New(llmagent.Config{
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Name: "main_agent",
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Model: model,
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Instruction: "You are an agent that can update user preferences. When a user asks to set a preference, identify the preference key and the desired value. For example, in 'set my theme to dark', the key is 'theme' and the value is 'dark'. Then, call the 'update_user_preference' tool with these values.",
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Tools: []tool.Tool{userPreferenceTool},
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})
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if err != nil {
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log.Fatal(err)
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}
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sessionService := session.InMemoryService()
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runner, err := runner.New(runner.Config{
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AppName: "user_preference",
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Agent: mainAgent,
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SessionService: sessionService,
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})
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if err != nil {
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log.Fatal(err)
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}
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session, err := sessionService.Create(ctx, &session.CreateRequest{
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AppName: "user_preference",
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UserID: "user1234",
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})
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if err != nil {
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log.Fatal(err)
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}
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run(ctx, runner, session.Session.ID(), "set my theme to dark")
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}
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func run(ctx context.Context, r *runner.Runner, sessionID string, prompt string) {
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fmt.Printf("\n> %s\n", prompt)
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events := r.Run(
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ctx,
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"user1234",
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sessionID,
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genai.NewContentFromText(prompt, genai.RoleUser),
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agent.RunConfig{
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StreamingMode: agent.StreamingModeNone,
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},
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)
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for event, err := range events {
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if err != nil {
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log.Fatalf("ERROR during agent execution: %v", err)
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}
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if event.Content.Parts[0].Text != "" {
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fmt.Printf("Agent Response: %s\n", event.Content.Parts[0].Text)
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}
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}
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}
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