feat: rework to how bedrock data models are structured and accessed (#1369)

* feat: rework to how bedrock data models are structured and accessed

Signed-off-by: AlexsJones <alexsimonjones@gmail.com>

* feat: rework to how bedrock data models are structured and accessed

Signed-off-by: AlexsJones <alexsimonjones@gmail.com>

---------

Signed-off-by: AlexsJones <alexsimonjones@gmail.com>

pkg/ai/amazonbedrock.go

@@ -2,8 +2,8 @@ package ai
 
 import (
 	"context"
-	"encoding/json"
-	"fmt"
+	"errors"
+	"github.com/k8sgpt-ai/k8sgpt/pkg/ai/bedrock_support"
 	"os"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -13,18 +13,18 @@ import (
 
 const amazonbedrockAIClientName = "amazonbedrock"
 
-// AmazonBedRockClient represents the client for interacting with the Amazon Bedrock service.
+// AmazonBedRockClient represents the client for interacting with the AmazonCompletion Bedrock service.
 type AmazonBedRockClient struct {
 	nopCloser
 
 	client      *bedrockruntime.BedrockRuntime
-	model       string
+	model       *bedrock_support.BedrockModel
 	temperature float32
 	topP        float32
 	maxTokens   int
 }
 
-// Amazon BedRock support region list US East (N. Virginia),US West (Oregon),Asia Pacific (Singapore),Asia Pacific (Tokyo),Europe (Frankfurt)
+// AmazonCompletion BedRock support region list US East (N. Virginia),US West (Oregon),Asia Pacific (Singapore),Asia Pacific (Tokyo),Europe (Frankfurt)
 // https://docs.aws.amazon.com/bedrock/latest/userguide/what-is-bedrock.html#bedrock-regions
 const BEDROCK_DEFAULT_REGION = "us-east-1" // default use us-east-1 region
 
@@ -44,41 +44,109 @@ var BEDROCKER_SUPPORTED_REGION = []string{
 	EU_Central_1,
 }
 
-const (
-	ModelAnthropicClaudeSonnetV3_5    = "anthropic.claude-3-5-sonnet-20240620-v1:0"
-	ModelAnthropicClaudeSonnetV3_5_V2 = "us.anthropic.claude-3-5-sonnet-20241022-v2:0"
-	ModelAnthropicClaudeV2            = "anthropic.claude-v2"
-	ModelAnthropicClaudeV1            = "anthropic.claude-v1"
-	ModelAnthropicClaudeInstantV1     = "anthropic.claude-instant-v1"
-	ModelA21J2UltraV1                 = "ai21.j2-ultra-v1"
-	ModelA21J2JumboInstruct           = "ai21.j2-jumbo-instruct"
-	ModelAmazonTitanExpressV1         = "amazon.titan-text-express-v1"
-)
-
-var BEDROCK_MODELS = []string{
-	ModelAnthropicClaudeV2,
-	ModelAnthropicClaudeV1,
-	ModelAnthropicClaudeInstantV1,
-	ModelA21J2UltraV1,
-	ModelA21J2JumboInstruct,
-	ModelAmazonTitanExpressV1,
-}
-
-//const TOPP = 0.9 moved to config
-
-// GetModelOrDefault check config model
-func GetModelOrDefault(model string) string {
-
-	// Check if the provided model is in the list
-	for _, m := range BEDROCK_MODELS {
-		if m == model {
-			return model // Return the provided model
-		}
+var (
+	models = []bedrock_support.BedrockModel{
+		{
+			Name:       "anthropic.claude-3-5-sonnet-20240620-v1:0",
+			Completion: &bedrock_support.CohereCompletion{},
+			Response:   &bedrock_support.CohereResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "us.anthropic.claude-3-5-sonnet-20241022-v2:0",
+			Completion: &bedrock_support.CohereCompletion{},
+			Response:   &bedrock_support.CohereResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "us.anthropic.claude-3-5-sonnet-20241022-v2:0",
+			Completion: &bedrock_support.CohereCompletion{},
+			Response:   &bedrock_support.CohereResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "anthropic.claude-v2",
+			Completion: &bedrock_support.CohereCompletion{},
+			Response:   &bedrock_support.CohereResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "anthropic.claude-v1",
+			Completion: &bedrock_support.CohereCompletion{},
+			Response:   &bedrock_support.CohereResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "anthropic.claude-instant-v1",
+			Completion: &bedrock_support.CohereCompletion{},
+			Response:   &bedrock_support.CohereResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "ai21.j2-ultra-v1",
+			Completion: &bedrock_support.AI21{},
+			Response:   &bedrock_support.AI21Response{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "ai21.j2-jumbo-instruct",
+			Completion: &bedrock_support.AI21{},
+			Response:   &bedrock_support.AI21Response{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
+		{
+			Name:       "amazon.titan-text-express-v1",
+			Completion: &bedrock_support.AmazonCompletion{},
+			Response:   &bedrock_support.AmazonResponse{},
+			Config: bedrock_support.BedrockModelConfig{
+				// sensible defaults
+				MaxTokens:   100,
+				Temperature: 0.5,
+				TopP:        0.9,
+			},
+		},
 	}
-
-	// Return the default model if the provided model is not in the list
-	return BEDROCK_MODELS[0]
-}
+)
 
 // GetModelOrDefault check config region
 func GetRegionOrDefault(region string) string {
@@ -97,6 +165,16 @@ func GetRegionOrDefault(region string) string {
 	return BEDROCK_DEFAULT_REGION
 }
 
+// Get model from string
+func (a *AmazonBedRockClient) getModelFromString(model string) (*bedrock_support.BedrockModel, error) {
+	for _, m := range models {
+		if model == m.Name {
+			return &m, nil
+		}
+	}
+	return nil, errors.New("model not found")
+}
+
 // Configure configures the AmazonBedRockClient with the provided configuration.
 func (a *AmazonBedRockClient) Configure(config IAIConfig) error {
 
@@ -111,9 +189,15 @@ func (a *AmazonBedRockClient) Configure(config IAIConfig) error {
 		return err
 	}
 
+	foundModel, err := a.getModelFromString(config.GetModel())
+	if err != nil {
+		return err
+	}
+	// TODO: Override the completion config somehow
+
 	// Create a new BedrockRuntime client
 	a.client = bedrockruntime.New(sess)
-	a.model = GetModelOrDefault(config.GetModel())
+	a.model = foundModel
 	a.temperature = config.GetTemperature()
 	a.topP = config.GetTopP()
 	a.maxTokens = config.GetMaxTokens()
@@ -124,45 +208,19 @@ func (a *AmazonBedRockClient) Configure(config IAIConfig) error {
 // GetCompletion sends a request to the model for generating completion based on the provided prompt.
 func (a *AmazonBedRockClient) GetCompletion(ctx context.Context, prompt string) (string, error) {
 
-	// Prepare the input data for the model invocation based on the model & the Response Body per model as well.
-	var request map[string]interface{}
-	switch a.model {
-	case ModelAnthropicClaudeSonnetV3_5, ModelAnthropicClaudeSonnetV3_5_V2, ModelAnthropicClaudeV2, ModelAnthropicClaudeV1, ModelAnthropicClaudeInstantV1:
-		request = map[string]interface{}{
-			"prompt":               fmt.Sprintf("\n\nHuman: %s  \n\nAssistant:", prompt),
-			"max_tokens_to_sample": a.maxTokens,
-			"temperature":          a.temperature,
-			"top_p":                a.topP,
-		}
-	case ModelA21J2UltraV1, ModelA21J2JumboInstruct:
-		request = map[string]interface{}{
-			"prompt":      prompt,
-			"maxTokens":   a.maxTokens,
-			"temperature": a.temperature,
-			"topP":        a.topP,
-		}
-	case ModelAmazonTitanExpressV1:
-		request = map[string]interface{}{
-			"inputText": fmt.Sprintf("\n\nUser: %s", prompt),
-			"textGenerationConfig": map[string]interface{}{
-				"maxTokenCount": a.maxTokens,
-				"temperature":   a.temperature,
-				"topP":          a.topP,
-			},
-		}
-	default:
-		return "", fmt.Errorf("model %s not supported", a.model)
-	}
+	// override config defaults
+	a.model.Config.MaxTokens = a.maxTokens
+	a.model.Config.Temperature = a.temperature
+	a.model.Config.TopP = a.topP
 
-	body, err := json.Marshal(request)
+	body, err := a.model.Completion.GetCompletion(ctx, prompt, a.model.Config)
 	if err != nil {
 		return "", err
 	}
-
 	// Build the parameters for the model invocation
 	params := &bedrockruntime.InvokeModelInput{
 		Body:        body,
-		ModelId:     aws.String(a.model),
+		ModelId:     aws.String(a.model.Name),
 		ContentType: aws.String("application/json"),
 		Accept:      aws.String("application/json"),
 	}
@@ -173,54 +231,9 @@ func (a *AmazonBedRockClient) GetCompletion(ctx context.Context, prompt string)
 		return "", err
 	}
 
-	// Response type changes as per model
-	switch a.model {
-	case ModelAnthropicClaudeSonnetV3_5, ModelAnthropicClaudeSonnetV3_5_V2, ModelAnthropicClaudeV2, ModelAnthropicClaudeV1, ModelAnthropicClaudeInstantV1:
-		type InvokeModelResponseBody struct {
-			Completion  string `json:"completion"`
-			Stop_reason string `json:"stop_reason"`
-		}
-		output := &InvokeModelResponseBody{}
-		err = json.Unmarshal(resp.Body, output)
-		if err != nil {
-			return "", err
-		}
-		return output.Completion, nil
-	case ModelA21J2UltraV1, ModelA21J2JumboInstruct:
-		type Data struct {
-			Text string `json:"text"`
-		}
-		type Completion struct {
-			Data Data `json:"data"`
-		}
-		type InvokeModelResponseBody struct {
-			Completions []Completion `json:"completions"`
-		}
-		output := &InvokeModelResponseBody{}
-		err = json.Unmarshal(resp.Body, output)
-		if err != nil {
-			return "", err
-		}
-		return output.Completions[0].Data.Text, nil
-	case ModelAmazonTitanExpressV1:
-		type Result struct {
-			TokenCount       int    `json:"tokenCount"`
-			OutputText       string `json:"outputText"`
-			CompletionReason string `json:"completionReason"`
-		}
-		type InvokeModelResponseBody struct {
-			InputTextTokenCount int      `json:"inputTextTokenCount"`
-			Results             []Result `json:"results"`
-		}
-		output := &InvokeModelResponseBody{}
-		err = json.Unmarshal(resp.Body, output)
-		if err != nil {
-			return "", err
-		}
-		return output.Results[0].OutputText, nil
-	default:
-		return "", fmt.Errorf("model %s not supported", a.model)
-	}
+	// Parse the response
+	return a.model.Response.ParseResponse(resp.Body)
+
 }
 
 // GetName returns the name of the AmazonBedRockClient.

pkg/ai/bedrock_support/completions.go

@@ -0,0 +1,67 @@
+package bedrock_support
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+)
+
+type ICompletion interface {
+	GetCompletion(ctx context.Context, prompt string, modelConfig BedrockModelConfig) ([]byte, error)
+}
+
+type CohereCompletion struct {
+	completion ICompletion
+}
+
+func (a *CohereCompletion) GetCompletion(ctx context.Context, prompt string, modelConfig BedrockModelConfig) ([]byte, error) {
+	request := map[string]interface{}{
+		"prompt":               fmt.Sprintf("\n\nHuman: %s  \n\nAssistant:", prompt),
+		"max_tokens_to_sample": modelConfig.MaxTokens,
+		"temperature":          modelConfig.Temperature,
+		"top_p":                modelConfig.TopP,
+	}
+	body, err := json.Marshal(request)
+	if err != nil {
+		return []byte{}, err
+	}
+	return body, nil
+}
+
+type AI21 struct {
+	completion ICompletion
+}
+
+func (a *AI21) GetCompletion(ctx context.Context, prompt string, modelConfig BedrockModelConfig) ([]byte, error) {
+	request := map[string]interface{}{
+		"prompt":      prompt,
+		"maxTokens":   modelConfig.MaxTokens,
+		"temperature": modelConfig.Temperature,
+		"topP":        modelConfig.TopP,
+	}
+	body, err := json.Marshal(request)
+	if err != nil {
+		return []byte{}, err
+	}
+	return body, nil
+}
+
+type AmazonCompletion struct {
+	completion ICompletion
+}
+
+func (a *AmazonCompletion) GetCompletion(ctx context.Context, prompt string, modelConfig BedrockModelConfig) ([]byte, error) {
+	request := map[string]interface{}{
+		"inputText": fmt.Sprintf("\n\nUser: %s", prompt),
+		"textGenerationConfig": map[string]interface{}{
+			"maxTokenCount": modelConfig.MaxTokens,
+			"temperature":   modelConfig.Temperature,
+			"topP":          modelConfig.TopP,
+		},
+	}
+	body, err := json.Marshal(request)
+	if err != nil {
+		return []byte{}, err
+	}
+	return body, nil
+}

pkg/ai/bedrock_support/model.go

@@ -0,0 +1,13 @@
+package bedrock_support
+
+type BedrockModelConfig struct {
+	MaxTokens   int
+	Temperature float32
+	TopP        float32
+}
+type BedrockModel struct {
+	Name       string
+	Completion ICompletion
+	Response   IResponse
+	Config     BedrockModelConfig
+}

pkg/ai/bedrock_support/responses.go

@@ -0,0 +1,68 @@
+package bedrock_support
+
+import "encoding/json"
+
+type IResponse interface {
+	ParseResponse(rawResponse []byte) (string, error)
+}
+
+type CohereResponse struct {
+	response IResponse
+}
+
+func (a *CohereResponse) ParseResponse(rawResponse []byte) (string, error) {
+	type InvokeModelResponseBody struct {
+		Completion  string `json:"completion"`
+		Stop_reason string `json:"stop_reason"`
+	}
+	output := &InvokeModelResponseBody{}
+	err := json.Unmarshal(rawResponse, output)
+	if err != nil {
+		return "", err
+	}
+	return output.Completion, nil
+}
+
+type AI21Response struct {
+	response IResponse
+}
+
+func (a *AI21Response) ParseResponse(rawResponse []byte) (string, error) {
+	type Data struct {
+		Text string `json:"text"`
+	}
+	type Completion struct {
+		Data Data `json:"data"`
+	}
+	type InvokeModelResponseBody struct {
+		Completions []Completion `json:"completions"`
+	}
+	output := &InvokeModelResponseBody{}
+	err := json.Unmarshal(rawResponse, output)
+	if err != nil {
+		return "", err
+	}
+	return output.Completions[0].Data.Text, nil
+}
+
+type AmazonResponse struct {
+	response IResponse
+}
+
+func (a *AmazonResponse) ParseResponse(rawResponse []byte) (string, error) {
+	type Result struct {
+		TokenCount       int    `json:"tokenCount"`
+		OutputText       string `json:"outputText"`
+		CompletionReason string `json:"completionReason"`
+	}
+	type InvokeModelResponseBody struct {
+		InputTextTokenCount int      `json:"inputTextTokenCount"`
+		Results             []Result `json:"results"`
+	}
+	output := &InvokeModelResponseBody{}
+	err := json.Unmarshal(rawResponse, output)
+	if err != nil {
+		return "", err
+	}
+	return output.Results[0].OutputText, nil
+}