Mistral AI を使用して Go で生成 AI アプリケーションを構築する

go run chat/main.go

const userMessageFormat = "[INST] %s [/INST]"
const modelID8X7BInstruct = "mistral.mixtral-8x7b-instruct-v0:1"
const bos = "<s>" 
const eos = "</s>"

var verbose *bool

func main() {
    reader := bufio.NewReader(os.Stdin)

    first := true
    var msg string

    for {
        fmt.Print("\nEnter your message: ")

        input, _ := reader.ReadString('\n')
        input = strings.TrimSpace(input)

        if first {
            msg = bos + fmt.Sprintf(userMessageFormat, input)
        } else {
            msg = msg + fmt.Sprintf(userMessageFormat, input)
        }

        payload := MistralRequest{
            Prompt: msg,
        }

        response, err := send(payload)

        fmt.Println("[Assistant]:", response)

        msg = msg + response + eos + " "

        first = false
    }
}

go run chat-streaming/main.go

    output, err := brc.InvokeModelWithResponseStream(context.Background(), &bedrockruntime.InvokeModelWithResponseStreamInput{
        Body:        payloadBytes,
        ModelId:     aws.String(modelID7BInstruct),
        ContentType: aws.String("application/json"),
    })
    //...

    //...
    resp, err := processStreamingOutput(output, func(ctx context.Context, part []byte) error {
        fmt.Print(string(part))
        return nil
    })

func processStreamingOutput(output *bedrockruntime.InvokeModelWithResponseStreamOutput, handler StreamingOutputHandler) (MistralResponse, error) {

    var combinedResult string

    resp := MistralResponse{}
    op := Outputs{}

    for event := range output.GetStream().Events() {
        switch v := event.(type) {
        case *types.ResponseStreamMemberChunk:

            var pr MistralResponse

            err := json.NewDecoder(bytes.NewReader(v.Value.Bytes)).Decode(&pr)
            if err != nil {
                return resp, err
            }

            handler(context.Background(), []byte(pr.Outputs[0].Text))

            combinedResult += pr.Outputs[0].Text
            op.StopReason = pr.Outputs[0].StopReason
    //...
    }

    op.Text = combinedResult
    resp.Outputs = []Outputs{op}

    return resp, nil
}