feat: support aws claude

relay/channel/aws/relay-aws.go

@@ -0,0 +1,211 @@
+package aws
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/jinzhu/copier"
+	"github.com/pkg/errors"
+	"io"
+	"net/http"
+	"one-api/common"
+	relaymodel "one-api/dto"
+	"one-api/relay/channel/claude"
+	relaycommon "one-api/relay/common"
+	"strings"
+
+	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go-v2/service/bedrockruntime"
+	"github.com/aws/aws-sdk-go-v2/service/bedrockruntime/types"
+)
+
+func newAwsClient(c *gin.Context, info *relaycommon.RelayInfo) (*bedrockruntime.Client, error) {
+	awsSecret := strings.Split(info.ApiKey, "|")
+	if len(awsSecret) != 3 {
+		return nil, errors.New("invalid aws secret key")
+	}
+	ak := awsSecret[0]
+	sk := awsSecret[1]
+	region := awsSecret[2]
+	client := bedrockruntime.New(bedrockruntime.Options{
+		Region:      region,
+		Credentials: aws.NewCredentialsCache(credentials.NewStaticCredentialsProvider(ak, sk, "")),
+	})
+
+	return client, nil
+}
+
+func wrapErr(err error) *relaymodel.OpenAIErrorWithStatusCode {
+	return &relaymodel.OpenAIErrorWithStatusCode{
+		StatusCode: http.StatusInternalServerError,
+		Error: relaymodel.OpenAIError{
+			Message: fmt.Sprintf("%s", err.Error()),
+		},
+	}
+}
+
+func awsModelID(requestModel string) (string, error) {
+	if awsModelID, ok := awsModelIDMap[requestModel]; ok {
+		return awsModelID, nil
+	}
+
+	return "", errors.Errorf("model %s not found", requestModel)
+}
+
+func awsHandler(c *gin.Context, info *relaycommon.RelayInfo, requestMode int) (*relaymodel.OpenAIErrorWithStatusCode, *relaymodel.Usage) {
+	awsCli, err := newAwsClient(c, info)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "newAwsClient")), nil
+	}
+
+	awsModelId, err := awsModelID(c.GetString("request_model"))
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "awsModelID")), nil
+	}
+
+	awsReq := &bedrockruntime.InvokeModelInput{
+		ModelId:     aws.String(awsModelId),
+		Accept:      aws.String("application/json"),
+		ContentType: aws.String("application/json"),
+	}
+
+	claudeReq_, ok := c.Get("converted_request")
+	if !ok {
+		return wrapErr(errors.New("request not found")), nil
+	}
+	claudeReq := claudeReq_.(*claude.ClaudeRequest)
+	awsClaudeReq := &AwsClaudeRequest{
+		AnthropicVersion: "bedrock-2023-05-31",
+	}
+	if err = copier.Copy(awsClaudeReq, claudeReq); err != nil {
+		return wrapErr(errors.Wrap(err, "copy request")), nil
+	}
+
+	awsReq.Body, err = json.Marshal(awsClaudeReq)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "marshal request")), nil
+	}
+
+	awsResp, err := awsCli.InvokeModel(c.Request.Context(), awsReq)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "InvokeModel")), nil
+	}
+
+	claudeResponse := new(claude.ClaudeResponse)
+	err = json.Unmarshal(awsResp.Body, claudeResponse)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "unmarshal response")), nil
+	}
+
+	openaiResp := claude.ResponseClaude2OpenAI(requestMode, claudeResponse)
+	usage := relaymodel.Usage{
+		PromptTokens:     claudeResponse.Usage.InputTokens,
+		CompletionTokens: claudeResponse.Usage.OutputTokens,
+		TotalTokens:      claudeResponse.Usage.InputTokens + claudeResponse.Usage.OutputTokens,
+	}
+	openaiResp.Usage = usage
+
+	c.JSON(http.StatusOK, openaiResp)
+	return nil, &usage
+}
+
+func awsStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, requestMode int) (*relaymodel.OpenAIErrorWithStatusCode, *relaymodel.Usage) {
+	awsCli, err := newAwsClient(c, info)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "newAwsClient")), nil
+	}
+
+	awsModelId, err := awsModelID(c.GetString("request_model"))
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "awsModelID")), nil
+	}
+
+	awsReq := &bedrockruntime.InvokeModelWithResponseStreamInput{
+		ModelId:     aws.String(awsModelId),
+		Accept:      aws.String("application/json"),
+		ContentType: aws.String("application/json"),
+	}
+
+	claudeReq_, ok := c.Get("converted_request")
+	if !ok {
+		return wrapErr(errors.New("request not found")), nil
+	}
+	claudeReq := claudeReq_.(*claude.ClaudeRequest)
+
+	awsClaudeReq := &AwsClaudeRequest{
+		AnthropicVersion: "bedrock-2023-05-31",
+	}
+	if err = copier.Copy(awsClaudeReq, claudeReq); err != nil {
+		return wrapErr(errors.Wrap(err, "copy request")), nil
+	}
+	awsReq.Body, err = json.Marshal(awsClaudeReq)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "marshal request")), nil
+	}
+
+	awsResp, err := awsCli.InvokeModelWithResponseStream(c.Request.Context(), awsReq)
+	if err != nil {
+		return wrapErr(errors.Wrap(err, "InvokeModelWithResponseStream")), nil
+	}
+	stream := awsResp.GetStream()
+	defer stream.Close()
+
+	c.Writer.Header().Set("Content-Type", "text/event-stream")
+	var usage relaymodel.Usage
+	var id string
+	var model string
+	c.Stream(func(w io.Writer) bool {
+		event, ok := <-stream.Events()
+		if !ok {
+			c.Render(-1, common.CustomEvent{Data: "data: [DONE]"})
+			return false
+		}
+
+		switch v := event.(type) {
+		case *types.ResponseStreamMemberChunk:
+			claudeResp := new(claude.ClaudeResponse)
+			err := json.NewDecoder(bytes.NewReader(v.Value.Bytes)).Decode(claudeResp)
+			if err != nil {
+				common.SysError("error unmarshalling stream response: " + err.Error())
+				return false
+			}
+
+			response, claudeUsage := claude.StreamResponseClaude2OpenAI(requestMode, claudeResp)
+			if claudeUsage != nil {
+				usage.PromptTokens += claudeUsage.InputTokens
+				usage.CompletionTokens += claudeUsage.OutputTokens
+			}
+
+			if response == nil {
+				return true
+			}
+
+			if response.Id != "" {
+				id = response.Id
+			}
+			if response.Model != "" {
+				model = response.Model
+			}
+			response.Id = id
+			response.Model = model
+
+			jsonStr, err := json.Marshal(response)
+			if err != nil {
+				common.SysError("error marshalling stream response: " + err.Error())
+				return true
+			}
+			c.Render(-1, common.CustomEvent{Data: "data: " + string(jsonStr)})
+			return true
+		case *types.UnknownUnionMember:
+			fmt.Println("unknown tag:", v.Tag)
+			return false
+		default:
+			fmt.Println("union is nil or unknown type")
+			return false
+		}
+	})
+
+	return nil, &usage
+}