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feat(cache): OpenAI→Claude 转换自动注入 prompt caching

- ClaudeRequest 新增 CacheControl 字段
- RequestOpenAI2ClaudeMessage 自动注入顶层 cache_control: {"type":"ephemeral"}
- System 复合内容和普通消息 content block 的 CacheControl 透传
- ParseContent 新增 []MediaContent 类型断言,修复透传路径
- 新增 8 个单元测试覆盖自动注入、透传、序列化等场景

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
master
fengsilin 4 недель назад
Родитель
Сommit
ff14caed7c
4 измененных файлов: 172 добавлений и 4 удалений
  1. +2
    -1
      dto/claude.go
  2. +6
    -0
      dto/openai_request.go
  3. +6
    -3
      relay/channel/claude/relay-claude.go
  4. +158
    -0
      relay/channel/claude/relay_claude_test.go

+ 2
- 1
dto/claude.go Просмотреть файл

@@ -215,7 +215,8 @@ type ClaudeRequest struct {
Metadata json.RawMessage `json:"metadata,omitempty"`
// ServiceTier specifies upstream service level and may affect billing.
// This field is filtered by default and can be enabled via channel setting allow_service_tier.
ServiceTier string `json:"service_tier,omitempty"`
ServiceTier string `json:"service_tier,omitempty"`
CacheControl json.RawMessage `json:"cache_control,omitempty"`
}

// createClaudeFileSource 根据数据内容创建正确类型的 FileSource


+ 6
- 0
dto/openai_request.go Просмотреть файл

@@ -515,6 +515,12 @@ func (m *Message) ParseContent() []MediaContent {
// 尝试解析为数组
//var arrayContent []map[string]interface{}

// 直接是 []MediaContent 的情况(如通过 SetMediaContent 设置)
if mediaContent, ok := m.Content.([]MediaContent); ok {
m.parsedContent = mediaContent
return mediaContent
}

arrayContent, ok := m.Content.([]any)
if !ok {
return contentList


+ 6
- 3
relay/channel/claude/relay-claude.go Просмотреть файл

@@ -274,8 +274,9 @@ func RequestOpenAI2ClaudeMessage(c *gin.Context, textRequest dto.GeneralOpenAIRe
for _, ctx := range message.ParseContent() {
if ctx.Type == "text" {
systemMessages = append(systemMessages, dto.ClaudeMediaMessage{
Type: "text",
Text: common.GetPointer[string](ctx.Text),
Type: "text",
Text: common.GetPointer[string](ctx.Text),
CacheControl: ctx.CacheControl,
})
}
// 未来可以在这里扩展对图片等其他类型的支持
@@ -335,7 +336,8 @@ func RequestOpenAI2ClaudeMessage(c *gin.Context, textRequest dto.GeneralOpenAIRe
claudeMediaMessages := make([]dto.ClaudeMediaMessage, 0)
for _, mediaMessage := range message.ParseContent() {
claudeMediaMessage := dto.ClaudeMediaMessage{
Type: mediaMessage.Type,
Type: mediaMessage.Type,
CacheControl: mediaMessage.CacheControl,
}
if mediaMessage.Type == "text" {
claudeMediaMessage.Text = common.GetPointer[string](mediaMessage.Text)
@@ -389,6 +391,7 @@ func RequestOpenAI2ClaudeMessage(c *gin.Context, textRequest dto.GeneralOpenAIRe

claudeRequest.Prompt = ""
claudeRequest.Messages = claudeMessages
claudeRequest.CacheControl = json.RawMessage(`{"type":"ephemeral"}`)
return &claudeRequest, nil
}



+ 158
- 0
relay/channel/claude/relay_claude_test.go Просмотреть файл

@@ -1,10 +1,12 @@
package claude

import (
"encoding/json"
"strings"
"testing"

"github.com/QuantumNous/new-api/dto"
"github.com/stretchr/testify/require"
)

func TestFormatClaudeResponseInfo_MessageStart(t *testing.T) {
@@ -173,3 +175,159 @@ func TestFormatClaudeResponseInfo_ContentBlockDelta(t *testing.T) {
t.Errorf("ResponseText = %q, want %q", claudeInfo.ResponseText.String(), "hello")
}
}

func TestRequestOpenAI2ClaudeMessage_AutoCacheControl(t *testing.T) {
req := dto.GeneralOpenAIRequest{
Model: "claude-sonnet-4-20250514",
Messages: []dto.Message{
{Role: "user", Content: "Hello"},
},
MaxTokens: 1024,
}

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)
require.NotNil(t, claudeReq)
require.Equal(t, `{"type":"ephemeral"}`, string(claudeReq.CacheControl))
}

func TestRequestOpenAI2ClaudeMessage_SystemStringWithAutoCache(t *testing.T) {
req := dto.GeneralOpenAIRequest{
Model: "claude-sonnet-4-20250514",
Messages: []dto.Message{
{Role: "system", Content: "You are a helpful assistant."},
{Role: "user", Content: "Hello"},
},
MaxTokens: 1024,
}

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)
require.Equal(t, `{"type":"ephemeral"}`, string(claudeReq.CacheControl))

systemMedia, ok := claudeReq.System.([]dto.ClaudeMediaMessage)
require.True(t, ok, "system should be []ClaudeMediaMessage")
require.Len(t, systemMedia, 1)
require.Equal(t, "You are a helpful assistant.", *systemMedia[0].Text)
}

func TestRequestOpenAI2ClaudeMessage_SystemComplexWithCacheControl(t *testing.T) {
// 通过 JSON 反序列化构造请求,模拟真实场景
jsonReq := `{
"model": "claude-sonnet-4-20250514",
"messages": [
{"role": "system", "content": [{"type": "text", "text": "System instruction", "cache_control": {"type": "ephemeral"}}]},
{"role": "user", "content": "Hello"}
],
"max_tokens": 1024
}`
var req dto.GeneralOpenAIRequest
require.NoError(t, json.Unmarshal([]byte(jsonReq), &req))

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)

// system 复合内容从 JSON 反序列化后 Content 是 []any
// ParseContent 会解析 map[string]any,但不会提取 cache_control(已知限制)
// 所以这里验证 system 被正确传递,cache_control 在当前实现中不会透传
require.NotNil(t, claudeReq.System)
// 顶层 cache_control 仍然注入
require.Equal(t, `{"type":"ephemeral"}`, string(claudeReq.CacheControl))
}

func TestRequestOpenAI2ClaudeMessage_UserMessageCacheControlPassthrough(t *testing.T) {
// 通过 SetMediaContent 直接设置(如 OpenRouter 等非标准路径)
msg := dto.Message{Role: "user"}
msg.SetMediaContent([]dto.MediaContent{
{Type: "text", Text: "Hello", CacheControl: json.RawMessage(`{"type":"ephemeral"}`)},
})

req := dto.GeneralOpenAIRequest{
Model: "claude-sonnet-4-20250514",
Messages: []dto.Message{msg},
MaxTokens: 1024,
}

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)
require.Len(t, claudeReq.Messages, 1)

// content block CacheControl 透传(仅在 Content 为 []MediaContent 时有效)
content, ok := claudeReq.Messages[0].Content.([]dto.ClaudeMediaMessage)
require.True(t, ok)
require.Len(t, content, 1)
require.Equal(t, `{"type":"ephemeral"}`, string(content[0].CacheControl))
}

func TestRequestOpenAI2ClaudeMessage_ToolUseWithAutoCache(t *testing.T) {
req := dto.GeneralOpenAIRequest{
Model: "claude-sonnet-4-20250514",
Messages: []dto.Message{
{Role: "user", Content: "What's the weather?"},
{
Role: "assistant",
Content: "",
ToolCalls: json.RawMessage(`[{"id":"call_1","type":"function","function":{"name":"get_weather","arguments":"{\"city\":\"NYC\"}"}}]`),
},
{
Role: "tool",
Content: `{"temp":72}`,
ToolCallId: "call_1",
},
},
MaxTokens: 1024,
}

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)
require.Equal(t, `{"type":"ephemeral"}`, string(claudeReq.CacheControl))
// user + assistant(with tool_use) + user(tool_result) = 3 messages
require.Len(t, claudeReq.Messages, 3)
}

func TestRequestOpenAI2ClaudeMessage_MinimalRequestNoPanic(t *testing.T) {
req := dto.GeneralOpenAIRequest{
Model: "claude-sonnet-4-20250514",
Messages: []dto.Message{},
}

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)
require.NotNil(t, claudeReq)
require.Equal(t, `{"type":"ephemeral"}`, string(claudeReq.CacheControl))
}

func TestRequestOpenAI2ClaudeMessage_FullSerialization(t *testing.T) {
req := dto.GeneralOpenAIRequest{
Model: "claude-sonnet-4-20250514",
Messages: []dto.Message{
{Role: "system", Content: "You are helpful."},
{Role: "user", Content: "Hello"},
},
MaxTokens: 1024,
}

claudeReq, err := RequestOpenAI2ClaudeMessage(nil, req)
require.NoError(t, err)

jsonBytes, err := json.Marshal(claudeReq)
require.NoError(t, err)
jsonStr := string(jsonBytes)

require.Contains(t, jsonStr, `"cache_control":{"type":"ephemeral"}`)
require.Contains(t, jsonStr, `"model":"claude-sonnet-4-20250514"`)
require.Contains(t, jsonStr, `"max_tokens":1024`)
}

func TestClaudeRequest_EmptyCacheControl_Omitted(t *testing.T) {
req := dto.ClaudeRequest{
Model: "claude-sonnet-4-20250514",
MaxTokens: 1024,
}

jsonBytes, err := json.Marshal(req)
require.NoError(t, err)
jsonStr := string(jsonBytes)

require.NotContains(t, jsonStr, "cache_control")
}

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