add amazonbedrock AI provider

Signed-off-by: Su Wei <suwei007@gmail.com>

pkg/ai/amzonbedrock.go

@@ -0,0 +1,151 @@
+package ai
+
+import (
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/fatih/color"
+
+	"github.com/k8sgpt-ai/k8sgpt/pkg/cache"
+	"github.com/k8sgpt-ai/k8sgpt/pkg/util"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/bedrockruntime"
+)
+
+// AmazonBedRockClient represents the client for interacting with the Amazon Bedrock service.
+type AmazonBedRockClient struct {
+	client      *bedrockruntime.BedrockRuntime
+	language    string
+	model       string
+	temperature float32
+}
+
+// InvokeModelResponseBody represents the response body structure from the model invocation.
+type InvokeModelResponseBody struct {
+	Completion  string `json:"completion"`
+	Stop_reason string `json:"stop_reason"`
+}
+
+const BEDROCK_REGION = "us-east-1" // default use us-east-1 region
+
+// GetModelOrDefault check config model
+func GetModelOrDefault(model string) string {
+	modelList := []string{"anthropic.claude-v2", "anthropic.claude-v1", "anthropic.claude-instant-v1"}
+
+	// Check if the provided model is in the list
+	for _, m := range modelList {
+		if m == model {
+			return model // Return the provided model
+		}
+	}
+
+	// Return the default model if the provided model is not in the list
+	return modelList[0]
+}
+
+// Configure configures the AmazonBedRockClient with the provided configuration and language.
+func (a *AmazonBedRockClient) Configure(config IAIConfig, language string) error {
+
+	// Create a new AWS session
+	sess, err := session.NewSession(&aws.Config{
+		Region: aws.String(BEDROCK_REGION),
+	})
+
+	if err != nil {
+		return err
+	}
+
+	// Create a new BedrockRuntime client
+	a.client = bedrockruntime.New(sess)
+	a.language = language
+	a.model = GetModelOrDefault(config.GetModel())
+	a.temperature = config.GetTemperature()
+
+	return nil
+}
+
+// GetCompletion sends a request to the model for generating completion based on the provided prompt.
+func (a *AmazonBedRockClient) GetCompletion(ctx context.Context, prompt string, promptTmpl string) (string, error) {
+
+	// Prepare the input data for the model invocation
+	request := map[string]interface{}{
+		"prompt":               fmt.Sprintf("\n\nHuman: %s  \n\nAssistant:", prompt),
+		"max_tokens_to_sample": 1024,
+		"temperature":          a.temperature,
+		"top_p":                0.9,
+	}
+
+	body, err := json.Marshal(request)
+	if err != nil {
+		return "", err
+	}
+
+	// Build the parameters for the model invocation
+	params := &bedrockruntime.InvokeModelInput{
+		Body:        body,
+		ModelId:     aws.String(a.model),
+		ContentType: aws.String("application/json"),
+		Accept:      aws.String("application/json"),
+	}
+	// Invoke the model
+	resp, err := a.client.InvokeModelWithContext(ctx, params)
+
+	if err != nil {
+		return "", err
+	}
+	// Parse the response body
+	output := &InvokeModelResponseBody{}
+	err = json.Unmarshal(resp.Body, output)
+	if err != nil {
+		return "", err
+	}
+	return output.Completion, nil
+}
+
+// Parse generates a completion for the provided prompt using the Amazon Bedrock model.
+func (a *AmazonBedRockClient) Parse(ctx context.Context, prompt []string, cache cache.ICache, promptTmpl string) (string, error) {
+	inputKey := strings.Join(prompt, " ")
+	// Check for cached data
+	cacheKey := util.GetCacheKey(a.GetName(), a.language, inputKey)
+
+	if !cache.IsCacheDisabled() && cache.Exists(cacheKey) {
+		response, err := cache.Load(cacheKey)
+		if err != nil {
+			return "", err
+		}
+
+		if response != "" {
+			output, err := base64.StdEncoding.DecodeString(response)
+			if err != nil {
+				color.Red("error decoding cached data: %v", err)
+				return "", nil
+			}
+			return string(output), nil
+		}
+	}
+
+	response, err := a.GetCompletion(ctx, inputKey, promptTmpl)
+
+	if err != nil {
+		return "", err
+	}
+
+	err = cache.Store(cacheKey, base64.StdEncoding.EncodeToString([]byte(response)))
+
+	if err != nil {
+		color.Red("error storing value to cache: %v", err)
+		return "", nil
+	}
+
+	return response, nil
+}
+
+// GetName returns the name of the AmazonBedRockClient.
+func (a *AmazonBedRockClient) GetName() string {
+	return "amazonbedrock"
+}

pkg/ai/iai.go

@@ -26,6 +26,7 @@ var (
 		&LocalAIClient{},
 		&NoOpAIClient{},
 		&CohereClient{},
+		&AmazonBedRockClient{},
 	}
 	Backends = []string{
 		"openai",
@@ -33,6 +34,7 @@ var (
 		"azureopenai",
 		"noopai",
 		"cohere",
+		"amazonbedrock",
 	}
 )