main.go•2.46 kB
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0
package main
import (
"context"
"errors"
"os"
"github.com/firebase/genkit/go/ai"
"github.com/firebase/genkit/go/genkit"
"github.com/firebase/genkit/go/plugins/googlegenai"
"google.golang.org/genai"
)
// duneQuestionInput is a question about Dune.
type duneQuestionInput struct {
Question string `json:"question"`
FilePath string `json:"path"`
}
func main() {
ctx := context.Background()
g := genkit.Init(ctx,
genkit.WithDefaultModel("googleai/gemini-2.5-flash-preview-04-17"),
genkit.WithPlugins(&googlegenai.GoogleAI{}),
)
genkit.DefineFlow(g, "duneFlowGeminiAI", func(ctx context.Context, input *duneQuestionInput) (string, error) {
prompt := "What is the text I provided you with?"
if input == nil {
return "", errors.New("empty flow input, provide at least a source file to read")
}
if len(input.Question) > 0 {
prompt = input.Question
}
textContent, err := os.ReadFile(input.FilePath)
if err != nil {
return "", err
}
// generate a request with a large text content to be cached
resp, err := genkit.Generate(ctx, g, ai.WithConfig(&genai.GenerateContentConfig{
Temperature: genai.Ptr[float32](0.7),
}),
ai.WithMessages(
ai.NewUserTextMessage(string(textContent)).WithCacheTTL(360),
),
ai.WithPrompt(prompt),
)
if err != nil {
return "", nil
}
// use previous messages to keep the conversation going and keep
// asking questions related to the large content that was cached
resp, err = genkit.Generate(ctx, g, ai.WithConfig(&genai.GenerateContentConfig{
Temperature: genai.Ptr[float32](0.7),
}),
ai.WithMessages(resp.History()...),
ai.WithPrompt("now rewrite the previous summary and make it look like a pirate wrote it"),
)
if err != nil {
return "", nil
}
text := resp.Text()
return text, nil
})
<-ctx.Done()
}