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feat: add support for Claude 3 tool use (function calling) (#1587)
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* feat: add tool support for AWS & Claude

* fix: add {} for openai compatibility in streaming tool_use
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dirname committed Jul 1, 2024
1 parent 1ce1e52 commit 0fc07ea
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Showing 6 changed files with 168 additions and 14 deletions.
121 changes: 115 additions & 6 deletions relay/adaptor/anthropic/main.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -29,19 +29,55 @@ func stopReasonClaude2OpenAI(reason *string) string {
return "stop"
case "max_tokens":
return "length"
case "tool_use":
return "tool_calls"
default:
return *reason
}
}

func ConvertRequest(textRequest model.GeneralOpenAIRequest) *Request {
claudeTools := make([]Tool, 0, len(textRequest.Tools))

for _, tool := range textRequest.Tools {
if params, ok := tool.Function.Parameters.(map[string]any); ok {
claudeTools = append(claudeTools, Tool{
Name: tool.Function.Name,
Description: tool.Function.Description,
InputSchema: InputSchema{
Type: params["type"].(string),
Properties: params["properties"],
Required: params["required"],
},
})
}
}

claudeRequest := Request{
Model: textRequest.Model,
MaxTokens: textRequest.MaxTokens,
Temperature: textRequest.Temperature,
TopP: textRequest.TopP,
TopK: textRequest.TopK,
Stream: textRequest.Stream,
Tools: claudeTools,
}
if len(claudeTools) > 0 {
claudeToolChoice := struct {
Type string `json:"type"`
Name string `json:"name,omitempty"`
}{Type: "auto"} // default value https://docs.anthropic.com/en/docs/build-with-claude/tool-use#controlling-claudes-output
if choice, ok := textRequest.ToolChoice.(map[string]any); ok {
if function, ok := choice["function"].(map[string]any); ok {
claudeToolChoice.Type = "tool"
claudeToolChoice.Name = function["name"].(string)
}
} else if toolChoiceType, ok := textRequest.ToolChoice.(string); ok {
if toolChoiceType == "any" {
claudeToolChoice.Type = toolChoiceType
}
}
claudeRequest.ToolChoice = claudeToolChoice
}
if claudeRequest.MaxTokens == 0 {
claudeRequest.MaxTokens = 4096
Expand All @@ -64,7 +100,24 @@ func ConvertRequest(textRequest model.GeneralOpenAIRequest) *Request {
if message.IsStringContent() {
content.Type = "text"
content.Text = message.StringContent()
if message.Role == "tool" {
claudeMessage.Role = "user"
content.Type = "tool_result"
content.Content = content.Text
content.Text = ""
content.ToolUseId = message.ToolCallId
}
claudeMessage.Content = append(claudeMessage.Content, content)
for i := range message.ToolCalls {
inputParam := make(map[string]any)
_ = json.Unmarshal([]byte(message.ToolCalls[i].Function.Arguments.(string)), &inputParam)
claudeMessage.Content = append(claudeMessage.Content, Content{
Type: "tool_use",
Id: message.ToolCalls[i].Id,
Name: message.ToolCalls[i].Function.Name,
Input: inputParam,
})
}
claudeRequest.Messages = append(claudeRequest.Messages, claudeMessage)
continue
}
Expand Down Expand Up @@ -97,16 +150,35 @@ func StreamResponseClaude2OpenAI(claudeResponse *StreamResponse) (*openai.ChatCo
var response *Response
var responseText string
var stopReason string
tools := make([]model.Tool, 0)

switch claudeResponse.Type {
case "message_start":
return nil, claudeResponse.Message
case "content_block_start":
if claudeResponse.ContentBlock != nil {
responseText = claudeResponse.ContentBlock.Text
if claudeResponse.ContentBlock.Type == "tool_use" {
tools = append(tools, model.Tool{
Id: claudeResponse.ContentBlock.Id,
Type: "function",
Function: model.Function{
Name: claudeResponse.ContentBlock.Name,
Arguments: "",
},
})
}
}
case "content_block_delta":
if claudeResponse.Delta != nil {
responseText = claudeResponse.Delta.Text
if claudeResponse.Delta.Type == "input_json_delta" {
tools = append(tools, model.Tool{
Function: model.Function{
Arguments: claudeResponse.Delta.PartialJson,
},
})
}
}
case "message_delta":
if claudeResponse.Usage != nil {
Expand All @@ -120,6 +192,10 @@ func StreamResponseClaude2OpenAI(claudeResponse *StreamResponse) (*openai.ChatCo
}
var choice openai.ChatCompletionsStreamResponseChoice
choice.Delta.Content = responseText
if len(tools) > 0 {
choice.Delta.Content = nil // compatible with other OpenAI derivative applications, like LobeOpenAICompatibleFactory ...
choice.Delta.ToolCalls = tools
}
choice.Delta.Role = "assistant"
finishReason := stopReasonClaude2OpenAI(&stopReason)
if finishReason != "null" {
Expand All @@ -136,12 +212,27 @@ func ResponseClaude2OpenAI(claudeResponse *Response) *openai.TextResponse {
if len(claudeResponse.Content) > 0 {
responseText = claudeResponse.Content[0].Text
}
tools := make([]model.Tool, 0)
for _, v := range claudeResponse.Content {
if v.Type == "tool_use" {
args, _ := json.Marshal(v.Input)
tools = append(tools, model.Tool{
Id: v.Id,
Type: "function", // compatible with other OpenAI derivative applications
Function: model.Function{
Name: v.Name,
Arguments: string(args),
},
})
}
}
choice := openai.TextResponseChoice{
Index: 0,
Message: model.Message{
Role: "assistant",
Content: responseText,
Name: nil,
Role: "assistant",
Content: responseText,
Name: nil,
ToolCalls: tools,
},
FinishReason: stopReasonClaude2OpenAI(claudeResponse.StopReason),
}
Expand Down Expand Up @@ -176,6 +267,7 @@ func StreamHandler(c *gin.Context, resp *http.Response) (*model.ErrorWithStatusC
var usage model.Usage
var modelName string
var id string
var lastToolCallChoice openai.ChatCompletionsStreamResponseChoice

for scanner.Scan() {
data := scanner.Text()
Expand All @@ -196,9 +288,20 @@ func StreamHandler(c *gin.Context, resp *http.Response) (*model.ErrorWithStatusC
if meta != nil {
usage.PromptTokens += meta.Usage.InputTokens
usage.CompletionTokens += meta.Usage.OutputTokens
modelName = meta.Model
id = fmt.Sprintf("chatcmpl-%s", meta.Id)
continue
if len(meta.Id) > 0 { // only message_start has an id, otherwise it's a finish_reason event.
modelName = meta.Model
id = fmt.Sprintf("chatcmpl-%s", meta.Id)
continue
} else { // finish_reason case
if len(lastToolCallChoice.Delta.ToolCalls) > 0 {
lastArgs := &lastToolCallChoice.Delta.ToolCalls[len(lastToolCallChoice.Delta.ToolCalls)-1].Function
if len(lastArgs.Arguments.(string)) == 0 { // compatible with OpenAI sending an empty object `{}` when no arguments.
lastArgs.Arguments = "{}"
response.Choices[len(response.Choices)-1].Delta.Content = nil
response.Choices[len(response.Choices)-1].Delta.ToolCalls = lastToolCallChoice.Delta.ToolCalls
}
}
}
}
if response == nil {
continue
Expand All @@ -207,6 +310,12 @@ func StreamHandler(c *gin.Context, resp *http.Response) (*model.ErrorWithStatusC
response.Id = id
response.Model = modelName
response.Created = createdTime

for _, choice := range response.Choices {
if len(choice.Delta.ToolCalls) > 0 {
lastToolCallChoice = choice
}
}
err = render.ObjectData(c, response)
if err != nil {
logger.SysError(err.Error())
Expand Down
21 changes: 21 additions & 0 deletions relay/adaptor/anthropic/model.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -16,13 +16,31 @@ type Content struct {
Type string `json:"type"`
Text string `json:"text,omitempty"`
Source *ImageSource `json:"source,omitempty"`
// tool_calls
Id string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Input any `json:"input,omitempty"`
Content string `json:"content,omitempty"`
ToolUseId string `json:"tool_use_id,omitempty"`
}

type Message struct {
Role string `json:"role"`
Content []Content `json:"content"`
}

type Tool struct {
Name string `json:"name"`
Description string `json:"description,omitempty"`
InputSchema InputSchema `json:"input_schema"`
}

type InputSchema struct {
Type string `json:"type"`
Properties any `json:"properties,omitempty"`
Required any `json:"required,omitempty"`
}

type Request struct {
Model string `json:"model"`
Messages []Message `json:"messages"`
Expand All @@ -33,6 +51,8 @@ type Request struct {
Temperature float64 `json:"temperature,omitempty"`
TopP float64 `json:"top_p,omitempty"`
TopK int `json:"top_k,omitempty"`
Tools []Tool `json:"tools,omitempty"`
ToolChoice any `json:"tool_choice,omitempty"`
//Metadata `json:"metadata,omitempty"`
}

Expand Down Expand Up @@ -61,6 +81,7 @@ type Response struct {
type Delta struct {
Type string `json:"type"`
Text string `json:"text"`
PartialJson string `json:"partial_json,omitempty"`
StopReason *string `json:"stop_reason"`
StopSequence *string `json:"stop_sequence"`
}
Expand Down
24 changes: 22 additions & 2 deletions relay/adaptor/aws/main.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import (
"encoding/json"
"fmt"
"github.com/songquanpeng/one-api/common/ctxkey"
"github.com/songquanpeng/one-api/relay/adaptor/openai"
"io"
"net/http"

Expand Down Expand Up @@ -143,6 +144,8 @@ func StreamHandler(c *gin.Context, awsCli *bedrockruntime.Client) (*relaymodel.E
c.Writer.Header().Set("Content-Type", "text/event-stream")
var usage relaymodel.Usage
var id string
var lastToolCallChoice openai.ChatCompletionsStreamResponseChoice

c.Stream(func(w io.Writer) bool {
event, ok := <-stream.Events()
if !ok {
Expand All @@ -163,15 +166,32 @@ func StreamHandler(c *gin.Context, awsCli *bedrockruntime.Client) (*relaymodel.E
if meta != nil {
usage.PromptTokens += meta.Usage.InputTokens
usage.CompletionTokens += meta.Usage.OutputTokens
id = fmt.Sprintf("chatcmpl-%s", meta.Id)
return true
if len(meta.Id) > 0 { // only message_start has an id, otherwise it's a finish_reason event.
id = fmt.Sprintf("chatcmpl-%s", meta.Id)
return true
} else { // finish_reason case
if len(lastToolCallChoice.Delta.ToolCalls) > 0 {
lastArgs := &lastToolCallChoice.Delta.ToolCalls[len(lastToolCallChoice.Delta.ToolCalls)-1].Function
if len(lastArgs.Arguments.(string)) == 0 { // compatible with OpenAI sending an empty object `{}` when no arguments.
lastArgs.Arguments = "{}"
response.Choices[len(response.Choices)-1].Delta.Content = nil
response.Choices[len(response.Choices)-1].Delta.ToolCalls = lastToolCallChoice.Delta.ToolCalls
}
}
}
}
if response == nil {
return true
}
response.Id = id
response.Model = c.GetString(ctxkey.OriginalModel)
response.Created = createdTime

for _, choice := range response.Choices {
if len(choice.Delta.ToolCalls) > 0 {
lastToolCallChoice = choice
}
}
jsonStr, err := json.Marshal(response)
if err != nil {
logger.SysError("error marshalling stream response: " + err.Error())
Expand Down
3 changes: 3 additions & 0 deletions relay/adaptor/aws/model.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,12 @@ type Request struct {
// AnthropicVersion should be "bedrock-2023-05-31"
AnthropicVersion string `json:"anthropic_version"`
Messages []anthropic.Message `json:"messages"`
System string `json:"system,omitempty"`
MaxTokens int `json:"max_tokens,omitempty"`
Temperature float64 `json:"temperature,omitempty"`
TopP float64 `json:"top_p,omitempty"`
TopK int `json:"top_k,omitempty"`
StopSequences []string `json:"stop_sequences,omitempty"`
Tools []anthropic.Tool `json:"tools,omitempty"`
ToolChoice any `json:"tool_choice,omitempty"`
}
9 changes: 5 additions & 4 deletions relay/model/message.go
View file
Original file line number Diff line number Diff line change
@@ -1,10 +1,11 @@
package model

type Message struct {
Role string `json:"role,omitempty"`
Content any `json:"content,omitempty"`
Name *string `json:"name,omitempty"`
ToolCalls []Tool `json:"tool_calls,omitempty"`
Role string `json:"role,omitempty"`
Content any `json:"content,omitempty"`
Name *string `json:"name,omitempty"`
ToolCalls []Tool `json:"tool_calls,omitempty"`
ToolCallId string `json:"tool_call_id,omitempty"`
}

func (m Message) IsStringContent() bool {
Expand Down
4 changes: 2 additions & 2 deletions relay/model/tool.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,13 @@ package model

type Tool struct {
Id string `json:"id,omitempty"`
Type string `json:"type"`
Type string `json:"type,omitempty"` // when splicing claude tools stream messages, it is empty
Function Function `json:"function"`
}

type Function struct {
Description string `json:"description,omitempty"`
Name string `json:"name"`
Name string `json:"name,omitempty"` // when splicing claude tools stream messages, it is empty
Parameters any `json:"parameters,omitempty"` // request
Arguments any `json:"arguments,omitempty"` // response
}

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