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lines changed

‎go.mod‎

Lines changed: 32 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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1+
module github.com/missuo/claude2openai
2+
3+
go 1.22.1
4+
5+
require github.com/gin-gonic/gin v1.9.1
6+
7+
require (
8+
github.com/bytedance/sonic v1.9.1 // indirect
9+
github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
10+
github.com/gabriel-vasile/mimetype v1.4.2 // indirect
11+
github.com/gin-contrib/sse v0.1.0 // indirect
12+
github.com/go-playground/locales v0.14.1 // indirect
13+
github.com/go-playground/universal-translator v0.18.1 // indirect
14+
github.com/go-playground/validator/v10 v10.14.0 // indirect
15+
github.com/goccy/go-json v0.10.2 // indirect
16+
github.com/json-iterator/go v1.1.12 // indirect
17+
github.com/klauspost/cpuid/v2 v2.2.4 // indirect
18+
github.com/leodido/go-urn v1.2.4 // indirect
19+
github.com/mattn/go-isatty v0.0.19 // indirect
20+
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
21+
github.com/modern-go/reflect2 v1.0.2 // indirect
22+
github.com/pelletier/go-toml/v2 v2.0.8 // indirect
23+
github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
24+
github.com/ugorji/go/codec v1.2.11 // indirect
25+
golang.org/x/arch v0.3.0 // indirect
26+
golang.org/x/crypto v0.9.0 // indirect
27+
golang.org/x/net v0.10.0 // indirect
28+
golang.org/x/sys v0.8.0 // indirect
29+
golang.org/x/text v0.9.0 // indirect
30+
google.golang.org/protobuf v1.30.0 // indirect
31+
gopkg.in/yaml.v3 v3.0.1 // indirect
32+
)

‎go.sum‎

Lines changed: 86 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,86 @@
1+
github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
2+
github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s=
3+
github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U=
4+
github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
5+
github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 h1:qSGYFH7+jGhDF8vLC+iwCD4WpbV1EBDSzWkJODFLams=
6+
github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
7+
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
8+
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
9+
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
10+
github.com/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q7OhCmWKU=
11+
github.com/gabriel-vasile/mimetype v1.4.2/go.mod h1:zApsH/mKG4w07erKIaJPFiX0Tsq9BFQgN3qGY5GnNgA=
12+
github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
13+
github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
14+
github.com/gin-gonic/gin v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg=
15+
github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU=
16+
github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
17+
github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
18+
github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
19+
github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
20+
github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
21+
github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
22+
github.com/go-playground/validator/v10 v10.14.0 h1:vgvQWe3XCz3gIeFDm/HnTIbj6UGmg/+t63MyGU2n5js=
23+
github.com/go-playground/validator/v10 v10.14.0/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
24+
github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
25+
github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
26+
github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
27+
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
28+
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
29+
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
30+
github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
31+
github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
32+
github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
33+
github.com/klauspost/cpuid/v2 v2.2.4 h1:acbojRNwl3o09bUq+yDCtZFc1aiwaAAxtcn8YkZXnvk=
34+
github.com/klauspost/cpuid/v2 v2.2.4/go.mod h1:RVVoqg1df56z8g3pUjL/3lE5UfnlrJX8tyFgg4nqhuY=
35+
github.com/leodido/go-urn v1.2.4 h1:XlAE/cm/ms7TE/VMVoduSpNBoyc2dOxHs5MZSwAN63Q=
36+
github.com/leodido/go-urn v1.2.4/go.mod h1:7ZrI8mTSeBSHl/UaRyKQW1qZeMgak41ANeCNaVckg+4=
37+
github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
38+
github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
39+
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
40+
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
41+
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
42+
github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
43+
github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
44+
github.com/pelletier/go-toml/v2 v2.0.8 h1:0ctb6s9mE31h0/lhu+J6OPmVeDxJn+kYnJc2jZR9tGQ=
45+
github.com/pelletier/go-toml/v2 v2.0.8/go.mod h1:vuYfssBdrU2XDZ9bYydBu6t+6a6PYNcZljzZR9VXg+4=
46+
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
47+
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
48+
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
49+
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
50+
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
51+
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
52+
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
53+
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
54+
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
55+
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
56+
github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
57+
github.com/stretchr/testify v1.8.3 h1:RP3t2pwF7cMEbC1dqtB6poj3niw/9gnV4Cjg5oW5gtY=
58+
github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
59+
github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
60+
github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
61+
github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
62+
github.com/ugorji/go/codec v1.2.11/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
63+
golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
64+
golang.org/x/arch v0.3.0 h1:02VY4/ZcO/gBOH6PUaoiptASxtXU10jazRCP865E97k=
65+
golang.org/x/arch v0.3.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
66+
golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
67+
golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
68+
golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
69+
golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
70+
golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
71+
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
72+
golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
73+
golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
74+
golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
75+
golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
76+
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
77+
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
78+
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
79+
google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
80+
google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
81+
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
82+
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
83+
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
84+
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
85+
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
86+
rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

‎main.go‎

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package main
2+
3+
import (
4+
"bytes"
5+
"encoding/json"
6+
"fmt"
7+
"io"
8+
"net/http"
9+
"strings"
10+
"time"
11+
12+
"github.com/gin-gonic/gin"
13+
)
14+
15+
type OpenAIRequest struct {
16+
Model string `json:"model"`
17+
Messages []struct {
18+
Role string `json:"role"`
19+
Content string `json:"content"`
20+
} `json:"messages"`
21+
Stream bool `json:"stream"`
22+
}
23+
24+
type ClaudeAPIResponse struct {
25+
Content []struct {
26+
Text string `json:"text"`
27+
} `json:"content"`
28+
ID string `json:"id"`
29+
Model string `json:"model"`
30+
Usage struct {
31+
InputTokens int `json:"input_tokens"`
32+
OutputTokens int `json:"output_tokens"`
33+
} `json:"usage"`
34+
}
35+
36+
type OpenAIResponse struct {
37+
ID string `json:"id"`
38+
Object string `json:"object"`
39+
Created int64 `json:"created"`
40+
Model string `json:"model"`
41+
SystemFingerprint string `json:"system_fingerprint,omitempty"`
42+
Choices []struct {
43+
Index int `json:"index"`
44+
Message struct {
45+
Role string `json:"role"`
46+
Content string `json:"content"`
47+
} `json:"message"`
48+
Logprobs interface{} `json:"logprobs"`
49+
FinishReason string `json:"finish_reason"`
50+
} `json:"choices"`
51+
Usage struct {
52+
PromptTokens int `json:"prompt_tokens"`
53+
CompletionTokens int `json:"completion_tokens"`
54+
TotalTokens int `json:"total_tokens"`
55+
} `json:"usage"`
56+
}
57+
58+
func proxyToClaude(c *gin.Context) {
59+
var openAIReq OpenAIRequest
60+
61+
if err := c.BindJSON(&openAIReq); err != nil {
62+
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
63+
return
64+
}
65+
fmt.Println(openAIReq)
66+
var newMessages []struct {
67+
Role string `json:"role"`
68+
Content string `json:"content"`
69+
}
70+
for i := 0; i < len(openAIReq.Messages); i++ {
71+
if openAIReq.Messages[i].Role == "system" && i+1 < len(openAIReq.Messages) {
72+
openAIReq.Messages[i+1].Content = openAIReq.Messages[i].Content + " " + openAIReq.Messages[i+1].Content
73+
} else if openAIReq.Messages[i].Role != "system" {
74+
newMessages = append(newMessages, openAIReq.Messages[i])
75+
}
76+
}
77+
78+
openAIReq.Messages = newMessages
79+
80+
claudeReqBody, err := json.Marshal(map[string]interface{}{
81+
"model": openAIReq.Model,
82+
"max_tokens": 4096,
83+
"messages": openAIReq.Messages,
84+
})
85+
if err != nil {
86+
c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to marshal request for Claude API"})
87+
return
88+
}
89+
authorizationHeader := c.GetHeader("Authorization")
90+
if !strings.HasPrefix(authorizationHeader, "Bearer ") {
91+
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid Authorization header format"})
92+
return
93+
}
94+
95+
apiKey := strings.TrimPrefix(authorizationHeader, "Bearer ")
96+
req, _ := http.NewRequest("POST", "https://api.anthropic.com/v1/messages", bytes.NewBuffer(claudeReqBody))
97+
req.Header.Set("Content-Type", "application/json")
98+
req.Header.Set("x-api-key", apiKey)
99+
req.Header.Set("anthropic-version", "2023-06-01")
100+
101+
client := &http.Client{}
102+
resp, err := client.Do(req)
103+
if err != nil {
104+
c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to call Claude API"})
105+
return
106+
}
107+
defer resp.Body.Close()
108+
109+
body, err := io.ReadAll(resp.Body)
110+
if err != nil {
111+
c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to read response from Claude API"})
112+
return
113+
}
114+
115+
var claudeResp ClaudeAPIResponse
116+
if err := json.Unmarshal(body, &claudeResp); err != nil {
117+
c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to parse response from Claude API"})
118+
return
119+
}
120+
121+
openAIResp := OpenAIResponse{
122+
ID: claudeResp.ID,
123+
Object: "chat.completion",
124+
Created: time.Now().Unix(),
125+
Model: claudeResp.Model,
126+
Choices: []struct {
127+
Index int `json:"index"`
128+
Message struct {
129+
Role string `json:"role"`
130+
Content string `json:"content"`
131+
} `json:"message"`
132+
Logprobs interface{} `json:"logprobs"`
133+
FinishReason string `json:"finish_reason"`
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}{
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{
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Index: 0,
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Message: struct {
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Role string `json:"role"`
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Content string `json:"content"`
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}{
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Role: "assistant",
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Content: claudeResp.Content[0].Text,
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},
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Logprobs: nil,
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FinishReason: "stop",
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},
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},
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Usage: struct {
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PromptTokens int `json:"prompt_tokens"`
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CompletionTokens int `json:"completion_tokens"`
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TotalTokens int `json:"total_tokens"`
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}{
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PromptTokens: len(openAIReq.Messages[0].Content),
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CompletionTokens: claudeResp.Usage.OutputTokens,
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TotalTokens: claudeResp.Usage.InputTokens + claudeResp.Usage.OutputTokens,
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},
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}
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c.JSON(http.StatusOK, openAIResp)
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}
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func main() {
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router := gin.Default()
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router.POST("/v1/completions", proxyToClaude)
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router.Run(":8080")
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}

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