From 0f1e287134496bb09527be5f206a9684da26cf00 Mon Sep 17 00:00:00 2001 From: kaireewu Date: Thu, 18 Jan 2024 17:32:23 +0800 Subject: [PATCH] =?UTF-8?q?feat:=20=E5=AE=9E=E7=8E=B0=E5=9F=BA=E7=A1=80?= =?UTF-8?q?=E7=9A=84=E9=9A=8F=E6=9C=BA=E8=BD=AC=E5=8F=91=E8=83=BD=E5=8A=9B?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .gitignore | 4 ++ Makefile | 6 +++ aiproxy.example.yml | 16 +++++++ config.go | 43 ++++++++++++++++++ go.mod | 42 ++++++++++++++++++ go.sum | 101 ++++++++++++++++++++++++++++++++++++++++++ main.go | 104 ++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 316 insertions(+) create mode 100644 .gitignore create mode 100644 Makefile create mode 100644 aiproxy.example.yml create mode 100644 config.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..8df67a4 --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +.idea/ +.vscode/ +aiproxy +aiproxy.yml diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..18b498f --- /dev/null +++ b/Makefile @@ -0,0 +1,6 @@ +export GOOS=linux +export GOARCH=amd64 + +# 构建目标 +build: + go build -ldflags="-s -w" -o aiproxy . \ No newline at end of file diff --git a/aiproxy.example.yml b/aiproxy.example.yml new file mode 100644 index 0000000..9c54bb4 --- /dev/null +++ b/aiproxy.example.yml @@ -0,0 +1,16 @@ +# 用于访问代理接口的 KEY，自己随意定义 +InKeys: + - sk-xbwMZecelXS +# 模型池，每个模型可以有多组转发目标 +# 每一组转发目标由 target 和 key 组成 +ApiPools: + gpt-4-1106-preview: + - Target: https://api.openai.com + Key: sk-key1 + - Target: https://api.proxy.cc + Key: sk-key2 + gpt-3.5-turbo: + - Target: https://api.proxy.cc + Key: sk-key2 + - Target: https://api.free.io + Key: sk-key3 diff --git a/config.go b/config.go new file mode 100644 index 0000000..525c599 --- /dev/null +++ b/config.go @@ -0,0 +1,43 @@ +package main + +import ( + "fmt" + "github.com/spf13/viper" +) + +type AiTarget struct { + TargetURL string `mapstructure:"Target"` + OpenAIKey string `mapstructure:"Key"` +} + +type AppConfig struct { + InKeys []string `mapstructure:"InKeys"` + ApiPools map[string][]AiTarget `mapstructure:"ApiPools"` +} + +var ( + config *AppConfig +) + +func InitConfig() { + v := viper.NewWithOptions(viper.KeyDelimiter("::")) + v.SetConfigName("aiproxy") + v.SetConfigType("yaml") + v.AddConfigPath("/etc/") + v.AddConfigPath("$HOME/.config/") + v.AddConfigPath(".") + + err := v.ReadInConfig() + if err != nil { + panic(fmt.Errorf("fatal on read config file: %w", err)) + } + err = v.Unmarshal(&config) + if err != nil { + panic(fmt.Errorf("fatal on parse config file: %w", err)) + } + var models []string + for k, _ := range config.ApiPools { + models = append(models, k) + } + fmt.Printf("loaded models: %+v", models) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..c324951 --- /dev/null +++ b/go.mod @@ -0,0 +1,42 @@ +module aiproxy + +go 1.21.4 + +require ( + github.com/gofiber/fiber/v2 v2.52.0 + github.com/json-iterator/go v1.1.12 + github.com/spf13/viper v1.18.2 +) + +require ( + github.com/andybalholm/brotli v1.1.0 // indirect + github.com/fsnotify/fsnotify v1.7.0 // indirect + github.com/google/uuid v1.5.0 // indirect + github.com/hashicorp/hcl v1.0.0 // indirect + github.com/klauspost/compress v1.17.4 // indirect + github.com/magiconair/properties v1.8.7 // indirect + github.com/mattn/go-colorable v0.1.13 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/mattn/go-runewidth v0.0.15 // indirect + github.com/mitchellh/mapstructure v1.5.0 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.1.1 // indirect + github.com/rivo/uniseg v0.4.4 // indirect + github.com/sagikazarmark/locafero v0.4.0 // indirect + github.com/sagikazarmark/slog-shim v0.1.0 // indirect + github.com/sourcegraph/conc v0.3.0 // indirect + github.com/spf13/afero v1.11.0 // indirect + github.com/spf13/cast v1.6.0 // indirect + github.com/spf13/pflag v1.0.5 // indirect + github.com/subosito/gotenv v1.6.0 // indirect + github.com/valyala/bytebufferpool v1.0.0 // indirect + github.com/valyala/fasthttp v1.51.0 // indirect + github.com/valyala/tcplisten v1.0.0 // indirect + go.uber.org/multierr v1.11.0 // indirect + golang.org/x/exp v0.0.0-20240112132812-db7319d0e0e3 // indirect + golang.org/x/sys v0.16.0 // indirect + golang.org/x/text v0.14.0 // indirect + gopkg.in/ini.v1 v1.67.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..7913f5e --- /dev/null +++ b/go.sum @@ -0,0 +1,101 @@ +github.com/andybalholm/brotli v1.1.0 h1:eLKJA0d02Lf0mVpIDgYnqXcUn0GqVmEFny3VuID1U3M= +github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY= +github.com/davecgh/go-spew v1.1.0/go.mod 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h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/main.go b/main.go new file mode 100644 index 0000000..1342bbe --- /dev/null +++ b/main.go @@ -0,0 +1,104 @@ +package main + +import ( + "bytes" + "github.com/gofiber/fiber/v2" + "github.com/gofiber/fiber/v2/middleware/cors" + jsoniter "github.com/json-iterator/go" + "log" + "math/rand" + "net/http" + "slices" + "strconv" + "time" +) + +type ModelMsg struct { + Model string `json:"model"` +} + +func main() { + InitConfig() + app := fiber.New(fiber.Config{ + StreamRequestBody: true, + DisablePreParseMultipartForm: true, + ReduceMemoryUsage: true, + JSONEncoder: jsoniter.Marshal, + JSONDecoder: jsoniter.Unmarshal, + }) + app.Use(cors.New(cors.ConfigDefault)) + app.Get("/ping", ping) + app.Get("/version", version) + app.All("/v1/*", proxy) + log.Fatal(app.Listen("0.0.0.0:8080")) +} + +func pickTarget(all []AiTarget) *AiTarget { + if len(all) < 1 { + return nil + } + r := rand.New(rand.NewSource(time.Now().UnixNano())) + n := r.Intn(len(all)) + return &all[n] +} + +func proxy(c *fiber.Ctx) (fErr error) { + defer func() { + if err := recover(); err != nil { + if e, ok := err.(error); ok { + fErr = e + } + } + }() + author := c.Get("Authorization") + if author == "" { + panic(fiber.NewError(fiber.StatusUnauthorized, "missing token")) + } + if author[:7] != "Bearer " { + panic(fiber.NewError(fiber.StatusUnauthorized, "invalid token")) + } + token := author[7:] + if !slices.Contains(config.InKeys, token) { + panic(fiber.NewError(fiber.StatusForbidden, "invalid token")) + } + raw := c.BodyRaw() + if len(raw) == 0 { + panic(fiber.NewError(fiber.StatusBadRequest, "empty body")) + } + var msg ModelMsg + if err := jsoniter.Unmarshal(raw, &msg); err != nil { + panic(fiber.NewError(fiber.StatusBadRequest, err.Error())) + } + targets, ok := config.ApiPools[msg.Model] + if !ok { + panic(fiber.NewError(fiber.StatusBadRequest, "invalid model")) + } + t := pickTarget(targets) + if t == nil { + panic(fiber.NewError(fiber.StatusInternalServerError, "no target")) + } + url := t.TargetURL + c.OriginalURL() + req, _ := http.NewRequest(c.Method(), url, bytes.NewReader(raw)) + req.Header.Set("Authorization", "Bearer "+t.OpenAIKey) + req.Header.Set("Content-Type", "application/json") + resp, err := http.DefaultClient.Do(req) + if err != nil { + panic(err) + } + c.Context().SetContentType(resp.Header.Get("Content-Type")) + if resp.Header.Get("Transfer-Encoding") != "" { + c.Set("Transfer-Encoding", resp.Header.Get("Transfer-Encoding")) + } else if resp.ContentLength != 0 { + c.Set("Content-Length", strconv.Itoa(int(resp.ContentLength))) + } + log.Printf("api: %s, model: %s, key: %s, status: %d", t.TargetURL, msg.Model, t.OpenAIKey, resp.StatusCode) + + return c.SendStream(resp.Body, -1) +} + +func version(c *fiber.Ctx) error { + return c.SendString("v0.1.0") +} +func ping(c *fiber.Ctx) error { + return c.SendStatus(200) +}