mirror of
https://github.com/google/adk-docs.git
synced 2026-09-14 16:16:59 +08:00
Mikalai Senkevich
95 lines
2.5 KiB
Go
95 lines
2.5 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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"os"
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"strings"
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"google.golang.org/adk/v2/agent"
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"google.golang.org/adk/v2/agent/llmagent"
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"google.golang.org/adk/v2/cmd/launcher"
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"google.golang.org/adk/v2/cmd/launcher/full"
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"google.golang.org/adk/v2/model/gemini"
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"google.golang.org/adk/v2/tool"
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"google.golang.org/adk/v2/tool/functiontool"
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"google.golang.org/genai"
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)
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type getCapitalCityArgs struct {
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Country string `json:"country" jsonschema:"The country for which to find the capital city."`
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}
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func getCapitalCity(ctx agent.Context, args getCapitalCityArgs) (string, error) {
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capitals := map[string]string{
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"united states": "Washington, D.C.",
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"canada": "Ottawa",
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"france": "Paris",
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"japan": "Tokyo",
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}
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capital, ok := capitals[strings.ToLower(args.Country)]
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if !ok {
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return "", fmt.Errorf("couldn't find the capital for %s", args.Country)
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}
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return capital, nil
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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-flash-latest", &genai.ClientConfig{
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APIKey: os.Getenv("GOOGLE_API_KEY"),
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})
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if err != nil {
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log.Fatalf("Failed to create model: %v", err)
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}
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capitalTool, err := functiontool.New(
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functiontool.Config{
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Name: "get_capital_city",
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Description: "Retrieves the capital city for a given country.",
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},
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getCapitalCity,
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)
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if err != nil {
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log.Fatalf("Failed to create function tool: %v", err)
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}
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geoAgent, err := llmagent.New(llmagent.Config{
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Name: "capital_agent",
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Model: model,
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Description: "Agent to find the capital city of a country.",
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Instruction: "I can answer your questions about the capital city of a country.",
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Tools: []tool.Tool{capitalTool},
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})
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if err != nil {
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log.Fatalf("Failed to create agent: %v", err)
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}
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config := &launcher.Config{
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AgentLoader: agent.NewSingleLoader(geoAgent),
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}
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l := full.NewLauncher()
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err = l.Execute(ctx, config, os.Args[1:])
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if err != nil {
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log.Fatalf("run failed: %v\n\n%s", err, l.CommandLineSyntax())
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}
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}
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