Salve Amazon Bedrock - Amazon Bedrock

Le traduzioni sono generate tramite traduzione automatica. In caso di conflitto tra il contenuto di una traduzione e la versione originale in Inglese, quest'ultima prevarrà.

Salve Amazon Bedrock

I seguenti esempi di codice mostrano come iniziare a usare Amazon Bedrock.

Go
SDKper Go V2
Nota

C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

package main import ( "context" "encoding/json" "flag" "fmt" "log" "os" "strings" "github.com/aws/aws-sdk-go-v2/aws" "github.com/aws/aws-sdk-go-v2/config" "github.com/aws/aws-sdk-go-v2/service/bedrockruntime" ) // Each model provider defines their own individual request and response formats. // For the format, ranges, and default values for the different models, refer to: // https://docs.aws.amazon.com/bedrock/latest/userguide/model-parameters.html type ClaudeRequest struct { Prompt string `json:"prompt"` MaxTokensToSample int `json:"max_tokens_to_sample"` // Omitting optional request parameters } type ClaudeResponse struct { Completion string `json:"completion"` } // main uses the AWS SDK for Go (v2) to create an Amazon Bedrock Runtime client // and invokes Anthropic Claude 2 inside your account and the chosen region. // This example uses the default settings specified in your shared credentials // and config files. func main() { region := flag.String("region", "us-east-1", "The AWS region") flag.Parse() fmt.Printf("Using AWS region: %s\n", *region) ctx := context.Background() sdkConfig, err := config.LoadDefaultConfig(ctx, config.WithRegion(*region)) if err != nil { fmt.Println("Couldn't load default configuration. Have you set up your AWS account?") fmt.Println(err) return } client := bedrockruntime.NewFromConfig(sdkConfig) modelId := "anthropic.claude-v2" prompt := "Hello, how are you today?" // Anthropic Claude requires you to enclose the prompt as follows: prefix := "Human: " postfix := "\n\nAssistant:" wrappedPrompt := prefix + prompt + postfix request := ClaudeRequest{ Prompt: wrappedPrompt, MaxTokensToSample: 200, } body, err := json.Marshal(request) if err != nil { log.Panicln("Couldn't marshal the request: ", err) } result, err := client.InvokeModel(ctx, &bedrockruntime.InvokeModelInput{ ModelId: aws.String(modelId), ContentType: aws.String("application/json"), Body: body, }) if err != nil { errMsg := err.Error() if strings.Contains(errMsg, "no such host") { fmt.Printf("Error: The Bedrock service is not available in the selected region. Please double-check the service availability for your region at https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services/.\n") } else if strings.Contains(errMsg, "Could not resolve the foundation model") { fmt.Printf("Error: Could not resolve the foundation model from model identifier: \"%v\". Please verify that the requested model exists and is accessible within the specified region.\n", modelId) } else { fmt.Printf("Error: Couldn't invoke Anthropic Claude. Here's why: %v\n", err) } os.Exit(1) } var response ClaudeResponse err = json.Unmarshal(result.Body, &response) if err != nil { log.Fatal("failed to unmarshal", err) } fmt.Println("Prompt:\n", prompt) fmt.Println("Response from Anthropic Claude:\n", response.Completion) }
  • Per API i dettagli, vedi InvokeModelin AWS SDK for Go APIReference.

JavaScript
SDKper JavaScript (v3)
Nota

C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

/** * @typedef {Object} Content * @property {string} text * * @typedef {Object} Usage * @property {number} input_tokens * @property {number} output_tokens * * @typedef {Object} ResponseBody * @property {Content[]} content * @property {Usage} usage */ import { fileURLToPath } from "url"; import { BedrockRuntimeClient, InvokeModelCommand, } from "@aws-sdk/client-bedrock-runtime"; const AWS_REGION = "us-east-1"; const MODEL_ID = "anthropic.claude-3-haiku-20240307-v1:0"; const PROMPT = "Hi. In a short paragraph, explain what you can do."; const hello = async () => { console.log("=".repeat(35)); console.log("Welcome to the Amazon Bedrock demo!"); console.log("=".repeat(35)); console.log("Model: Anthropic Claude 3 Haiku"); console.log(`Prompt: ${PROMPT}\n`); console.log("Invoking model...\n"); // Create a new Bedrock Runtime client instance. const client = new BedrockRuntimeClient({ region: AWS_REGION }); // Prepare the payload for the model. const payload = { anthropic_version: "bedrock-2023-05-31", max_tokens: 1000, messages: [{ role: "user", content: [{ type: "text", text: PROMPT }] }], }; // Invoke Claude with the payload and wait for the response. const apiResponse = await client.send( new InvokeModelCommand({ contentType: "application/json", body: JSON.stringify(payload), modelId: MODEL_ID, }), ); // Decode and return the response(s) const decodedResponseBody = new TextDecoder().decode(apiResponse.body); /** @type {ResponseBody} */ const responseBody = JSON.parse(decodedResponseBody); const responses = responseBody.content; if (responses.length === 1) { console.log(`Response: ${responses[0].text}`); } else { console.log("Haiku returned multiple responses:"); console.log(responses); } console.log(`\nNumber of input tokens: ${responseBody.usage.input_tokens}`); console.log(`Number of output tokens: ${responseBody.usage.output_tokens}`); }; if (process.argv[1] === fileURLToPath(import.meta.url)) { await hello(); }
  • Per API i dettagli, vedi InvokeModelin AWS SDK for JavaScript APIReference.

Per un elenco completo delle guide per AWS SDK sviluppatori e degli esempi di codice, consultaUtilizzo di Amazon Bedrock con un AWS SDK. Questo argomento include anche informazioni su come iniziare e dettagli sulle SDK versioni precedenti.