352 lines
9.9 KiB
Go
352 lines
9.9 KiB
Go
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// fetch_openrouter.go - OpenRouter 模型数据采集器
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// Phase 1 单数据源采集器，抓取模型基础信息与价格信息
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package main
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import (
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"database/sql"
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"encoding/json"
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"flag"
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"fmt"
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"io"
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"net/http"
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"os"
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"time"
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_ "github.com/lib/pq"
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)
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// Config 采集配置
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type Config struct {
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APIKey string
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APIURL string
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OutPath string
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MaxRetries int
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TimeoutSec int
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// PostgreSQL 连接参数（新增）
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DBConn string // e.g. "host=/var/run/postgresql dbname=llm_intelligence sslmode=disable"
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}
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// OpenRouter API 响应结构（仅关键字段）
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type APIResponse struct {
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Data []ModelInfo `json:"data"`
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}
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type ModelInfo struct {
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ID string `json:"id"`
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Name string `json:"name,omitempty"`
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Created int64 `json:"created,omitempty"`
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Description string `json:"description,omitempty"`
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ContextLength int `json:"context_length,omitempty"`
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Capabilities []string `json:"capabilities,omitempty"`
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Pricing ModelPricing `json:"pricing,omitempty"`
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}
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type ModelPricing struct {
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Input float64 `json:"input,omitempty"`
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Output float64 `json:"output,omitempty"`
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}
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func main() {
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cfg := parseArgs()
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if err := run(cfg); err != nil {
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fmt.Fprintf(os.Stderr, "采集失败: %v\n", err)
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os.Exit(1)
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}
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}
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func parseArgs() Config {
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apiKey := flag.String("api-key", "", "OpenRouter API Key（建议通过环境变量注入）")
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apiURL := flag.String("api-url", "https://openrouter.ai/api/v1/models", "API 地址")
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outPath := flag.String("out", "models.json", "输出文件路径")
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maxRetries := flag.Int("retry", 3, "最大重试次数")
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timeoutSec := flag.Int("timeout", 30, "请求超时（秒）")
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dbConn := flag.String("db", os.Getenv("DATABASE_URL"), "PostgreSQL 连接字符串（默认从 DATABASE_URL 环境变量读取）")
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flag.Parse()
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return Config{
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APIKey: *apiKey,
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APIURL: *apiURL,
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OutPath: *outPath,
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MaxRetries: *maxRetries,
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TimeoutSec: *timeoutSec,
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DBConn: *dbConn,
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}
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}
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func run(cfg Config) error {
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models, err := fetchModels(cfg)
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if err != nil {
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return err
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}
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// 优先写入 PostgreSQL；若配置了 DBConn 则入库
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if cfg.DBConn != "" {
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if err := summarizeDB(cfg.DBConn, models); err != nil {
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fmt.Fprintf(os.Stderr, "警告: PostgreSQL 写入失败: %v\n", err)
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fmt.Fprintln(os.Stderr, "降级为仅写入 JSON")
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}
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}
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return summarize(cfg.OutPath, models)
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}
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// fetchModels 抓取 OpenRouter 模型列表
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func fetchModels(cfg Config) ([]ModelInfo, error) {
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// 无 API Key 时返回模拟数据（写入由后续 summarize 统一处理）
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if cfg.APIKey == "" {
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fmt.Println("警告: 未提供 API Key，使用模拟数据")
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return []ModelInfo{
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{ID: "openai/gpt-4o", ContextLength: 128000,
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Pricing: ModelPricing{Input: 2.5, Output: 10.0}},
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{ID: "anthropic/claude-3.5-sonnet:free", ContextLength: 200000,
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Pricing: ModelPricing{}},
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}, nil
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}
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client := &http.Client{Timeout: time.Duration(cfg.TimeoutSec) * time.Second}
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req, err := http.NewRequest("GET", cfg.APIURL, nil)
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if err != nil {
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return nil, fmt.Errorf("构造请求失败: %w", err)
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}
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req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
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req.Header.Set("Content-Type", "application/json")
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var resp *http.Response
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for i := 0; i <= cfg.MaxRetries; i++ {
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resp, err = client.Do(req)
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if err == nil {
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break
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}
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if i < cfg.MaxRetries {
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time.Sleep(time.Duration(i+1) * time.Second)
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}
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}
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if err != nil {
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return nil, fmt.Errorf("请求失败: %w", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(resp.Body)
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return nil, fmt.Errorf("非 200 响应: %d %s", resp.StatusCode, string(body))
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}
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("读取响应失败: %w", err)
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}
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// 健壮解析，兼容字段缺失和结构差异
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models, err := parseModels(body)
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if err != nil {
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return nil, fmt.Errorf("JSON 解析失败: %w", err)
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}
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// TODO: 字段标准化映射（OpenRouter id → 标准厂商名、模型名）
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return models, nil
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}
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// parseModels 健壮解析模型列表，兼容字段缺失/类型不一致/嵌套结构差异
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func parseModels(raw []byte) ([]ModelInfo, error) {
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var wrapper struct {
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Data json.RawMessage `json:"data"`
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}
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if err := json.Unmarshal(raw, &wrapper); err != nil {
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return nil, fmt.Errorf("解析 data 字段失败: %w", err)
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}
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// data 为数组，每元素字段可能不同，统一用 map[string]any 兼容
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var rawItems []any
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if err := json.Unmarshal(wrapper.Data, &rawItems); err != nil {
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return nil, fmt.Errorf("解析模型数组失败: %w", err)
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}
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models := make([]ModelInfo, 0, len(rawItems))
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for _, item := range rawItems {
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m, ok := item.(map[string]any)
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if !ok {
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continue // 跳过非法条目
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}
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model := ModelInfo{
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ID: getString(m, "id"),
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Name: getString(m, "name"),
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}
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if model.ID == "" {
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continue // id 为必填
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}
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// pricing 可能为嵌套对象（如 {openrouter: {input: 1}}），尝试多路径取值
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if p, ok := m["pricing"].(map[string]any); ok {
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model.Pricing.Input = getPrice(p, "input", "prompt")
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model.Pricing.Output = getPrice(p, "output", "completion")
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}
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model.ContextLength = getInt(m, "context_length")
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model.Description = getString(m, "description")
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model.Created = getInt64(m, "created")
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if caps, ok := m["capabilities"].([]any); ok {
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for _, c := range caps {
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if s, ok := c.(string); ok {
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model.Capabilities = append(model.Capabilities, s)
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}
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}
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}
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models = append(models, model)
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}
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return models, nil
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}
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func getString(m map[string]any, key string) string {
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if v, ok := m[key].(string); ok {
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return v
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}
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return ""
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}
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func getInt(m map[string]any, key string) int {
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if v, ok := m[key].(float64); ok {
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return int(v)
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}
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return 0
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}
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func getInt64(m map[string]any, key string) int64 {
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if v, ok := m[key].(float64); ok {
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return int64(v)
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}
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return 0
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}
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// getPrice 多路径取值，兼容不同嵌套结构（如 {input:1} 或 {openrouter:{input:1}}）
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func getPrice(m map[string]any, keys ...string) float64 {
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for _, k := range keys {
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if v, ok := m[k].(float64); ok {
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return v
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}
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}
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return 0
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}
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// summarize 输出采集摘要到 JSON 文件（保持向后兼容）
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func summarize(outPath string, models []ModelInfo) error {
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return writeJSON(outPath, models)
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}
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// summarizeDB 将采集结果写入 PostgreSQL（models + model_prices 表）
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func summarizeDB(connStr string, models []ModelInfo) error {
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db, err := sql.Open("postgres", connStr)
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if err != nil {
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return fmt.Errorf("连接数据库失败: %w", err)
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}
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defer db.Close()
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if err := db.Ping(); err != nil {
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return fmt.Errorf("ping 数据库失败: %w", err)
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}
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tx, err := db.Begin()
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if err != nil {
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return fmt.Errorf("开启事务失败: %w", err)
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}
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defer tx.Rollback()
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now := time.Now()
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insertedModels := 0
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insertedPrices := 0
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for _, m := range models {
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isFree := len(m.ID) > 5 && m.ID[len(m.ID)-5:] == ":free"
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// upsert models 表
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var modelID int64
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err := tx.QueryRow(`
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INSERT INTO models (source, external_id, name, description, context_length, capabilities, created_at_source, is_free, status, raw_payload, created_at, updated_at)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
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ON CONFLICT (external_id) DO UPDATE SET
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name = EXCLUDED.name,
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description = EXCLUDED.description,
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context_length = EXCLUDED.context_length,
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capabilities = EXCLUDED.capabilities,
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created_at_source = EXCLUDED.created_at_source,
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is_free = EXCLUDED.is_free,
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status = EXCLUDED.status,
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raw_payload = EXCLUDED.raw_payload,
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updated_at = $12
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RETURNING id
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`, "openrouter", m.ID, m.Name, m.Description, m.ContextLength,
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jsonCapabilities(m.Capabilities), m.Created, isFree, "active",
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rawPayload(m), now, now).Scan(&modelID)
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if err != nil {
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return fmt.Errorf("写入 models 失败 (%s): %w", m.ID, err)
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}
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insertedModels++
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// upsert model_prices 表（当天有效日期）
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effectiveDate := now.Format("2006-01-02")
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_, err = tx.Exec(`
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INSERT INTO model_prices (model_id, source, currency, input_price_per_mtok, output_price_per_mtok, effective_date, source_url, created_at)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
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ON CONFLICT (model_id, source, currency, effective_date) DO UPDATE SET
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input_price_per_mtok = EXCLUDED.input_price_per_mtok,
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output_price_per_mtok = EXCLUDED.output_price_per_mtok,
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created_at = EXCLUDED.created_at
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`, modelID, "openrouter", "USD", m.Pricing.Input, m.Pricing.Output, effectiveDate, "https://openrouter.ai/api/v1/models", now)
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if err != nil {
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return fmt.Errorf("写入 model_prices 失败 (%s): %w", m.ID, err)
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}
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insertedPrices++
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}
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if err := tx.Commit(); err != nil {
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return fmt.Errorf("提交事务失败: %w", err)
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}
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fmt.Printf("PostgreSQL 写入完成: %d models, %d prices\n", insertedModels, insertedPrices)
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return nil
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}
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func jsonCapabilities(caps []string) []byte {
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if len(caps) == 0 {
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return []byte("[]")
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}
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b, _ := json.Marshal(caps)
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return b
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}
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func rawPayload(m ModelInfo) []byte {
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b, _ := json.Marshal(m)
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return b
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}
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// writeJSON 统一写入 JSON 文件（含摘要信息）
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func writeJSON(outPath string, models []ModelInfo) error {
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total := len(models)
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var freeCnt, paidCnt int
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for _, m := range models {
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if len(m.ID) > 5 && m.ID[len(m.ID)-5:] == ":free" {
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freeCnt++
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} else if m.Pricing.Input > 0 || m.Pricing.Output > 0 {
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paidCnt++
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}
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}
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summary := fmt.Sprintf("采集完成: 共 %d 模型（免费 %d / 付费 %d）\n", total, freeCnt, paidCnt)
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fmt.Print(summary)
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out, err := os.Create(outPath)
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if err != nil {
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return fmt.Errorf("创建输出文件失败: %w", err)
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}
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defer out.Close()
|
|||
|
|
|
|||
|
|
enc := json.NewEncoder(out)
|
|||
|
|
enc.SetIndent("", " ")
|
|||
|
|
if err := enc.Encode(map[string]any{
|
|||
|
|
"generated_at": time.Now().Format(time.RFC3339),
|
|||
|
|
"total": total,
|
|||
|
|
"free": freeCnt,
|
|||
|
|
"paid": paidCnt,
|
|||
|
|
"models": models,
|
|||
|
|
}); err != nil {
|
|||
|
|
return fmt.Errorf("写入 JSON 失败: %w", err)
|
|||
|
|
}
|
|||
|
|
fmt.Printf("结果已写入: %s\n", outPath)
|
|||
|
|
return nil
|
|||
|
|
}
|