187 lines
5.7 KiB
Go
187 lines
5.7 KiB
Go
package ragflow
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import (
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"bytes"
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"context"
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"io"
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"net"
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"net/http"
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"net/url"
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"strings"
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"sync"
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"time"
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"github.com/gogf/gf/v2/encoding/gjson"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/frame/g"
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)
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// gclient 完全不能用!
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// 1. New() 默认 ResponseHeaderTimeout=30s
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// 2. Clone() 内部调用 New(),链式调用会重置 Transport
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// 3. 必须用原生 http.Client
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var (
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// globalClient 全局 RAGFlow 客户端(单例,延迟初始化)
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globalClient *Client
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clientOnce sync.Once
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)
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// initClient 延迟初始化客户端
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func initClient() {
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clientOnce.Do(func() {
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ctx := context.Background()
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// 读取配置
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baseURL, apiKey := loadConfig(ctx)
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// 如果配置不完整,跳过初始化
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if baseURL == "" || apiKey == "" {
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g.Log().Warning(ctx, "⚠️ RAGFlow 配置未找到,请在项目 config.yml 中添加 ragflow.base_url 和 ragflow.api_key")
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return
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}
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// 自定义 Transport,增大连接池(解决并发连接不足导致的超时)
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transport := &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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DialContext: (&net.Dialer{
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Timeout: 30 * time.Second,
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KeepAlive: 30 * time.Second,
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}).DialContext,
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MaxIdleConns: 200, // 最大空闲连接数
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MaxIdleConnsPerHost: 100, // 每个 host 最大空闲连接数(关键!默认只有 2)
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MaxConnsPerHost: 100, // 每个 host 最大连接数
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IdleConnTimeout: 90 * time.Second, // 空闲连接超时
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TLSHandshakeTimeout: 10 * time.Second,
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ExpectContinueTimeout: 1 * time.Second,
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ResponseHeaderTimeout: 180 * time.Second, // 等待响应头超时(关键!)
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}
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// 使用原生 http.Client(gclient 完全不能用,Clone() 内部调用 New() 会重置 Transport)
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httpClient := &http.Client{
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Transport: transport,
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Timeout: 0, // 不设置全局超时,由 context 控制
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}
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// 验证 Transport 设置
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g.Log().Infof(ctx, "✅ Transport 配置: ResponseHeaderTimeout=%v, MaxIdleConnsPerHost=%d, DisableKeepAlives=%v",
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transport.ResponseHeaderTimeout, transport.MaxIdleConnsPerHost, transport.DisableKeepAlives)
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globalClient = &Client{
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BaseURL: strings.TrimSuffix(baseURL, "/"),
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APIKey: apiKey,
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HTTPClient: httpClient,
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}
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g.Log().Infof(ctx, "✅ RAGFlow 全局客户端初始化成功: baseURL=%s", baseURL)
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})
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}
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// loadConfig 从配置文件加载 RAGFlow 配置
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func loadConfig(ctx context.Context) (baseURL, apiKey string) {
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// 使用 GoFrame 全局配置(从项目的 config.yml 读取)
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baseURL = g.Cfg().MustGet(ctx, "ragflow.base_url", "").String()
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apiKey = g.Cfg().MustGet(ctx, "ragflow.api_key", "").String()
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return
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}
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// GetGlobalClient 获取全局客户端(延迟初始化)
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// 使用示例:client := ragflow.GetGlobalClient()
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func GetGlobalClient() *Client {
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initClient()
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return globalClient
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}
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// Client RAGFlow API 客户端
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type Client struct {
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BaseURL string
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APIKey string
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HTTPClient *http.Client // 原生 HTTP 客户端(gclient 不能用)
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}
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// CommonResponse 通用响应结构
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type CommonResponse struct {
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Code int `json:"code"`
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Message string `json:"message"`
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Data interface{} `json:"data,omitempty"`
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}
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// IsSuccess 检查响应是否成功
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func (r *CommonResponse) IsSuccess() bool {
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return r.Code == 0
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}
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// request 发送 HTTP 请求
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func (c *Client) request(ctx context.Context, method, path string, body interface{}, result interface{}) (err error) {
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fullURL := c.BaseURL + path
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var reqBody string
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if body != nil {
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jsonData, err := gjson.Encode(body)
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if err != nil {
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return gerror.Newf("marshal request body failed: %v", err)
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}
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reqBody = string(jsonData)
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}
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// 使用独立的 context 设置 300 秒超时(RAGFlow 高并发时响应较慢)
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reqCtx, cancel := context.WithTimeout(context.Background(), 300*time.Second)
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defer cancel()
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startTime := time.Now()
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// 创建请求
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req, err := http.NewRequestWithContext(reqCtx, method, fullURL, bytes.NewReader([]byte(reqBody)))
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if err != nil {
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return gerror.Newf("create request failed: %v", err)
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}
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// 设置请求头
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req.Header.Set("Authorization", "Bearer "+c.APIKey)
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req.Header.Set("Content-Type", "application/json")
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// 发送请求
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g.Log().Infof(ctx, "[RAGFlow HTTP] 发送请求: method=%s, url=%s", method, fullURL)
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resp, err := c.HTTPClient.Do(req)
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elapsed := time.Since(startTime)
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if err != nil {
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g.Log().Errorf(ctx, "[RAGFlow HTTP] 请求失败(耗时 %v): method=%s, url=%s, error=%v", elapsed, method, fullURL, err)
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return gerror.Newf("request failed: %v", err)
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}
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g.Log().Infof(ctx, "[RAGFlow HTTP] 收到响应(耗时 %v): status=%d, url=%s", elapsed, resp.StatusCode, fullURL)
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defer resp.Body.Close()
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// 读取响应
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respBody, err := io.ReadAll(resp.Body)
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if err != nil {
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return gerror.Newf("read response failed: %v", err)
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}
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// 打印响应详情
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g.Log().Debugf(ctx, "[RAGFlow HTTP] 响应: status=%d, body=%s", resp.StatusCode, respBody)
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if resp.StatusCode != http.StatusOK {
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g.Log().Errorf(ctx, "[RAGFlow HTTP] 非200响应: status=%d, body=%s", resp.StatusCode, respBody)
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return gerror.Newf("http status %d: %s", resp.StatusCode, respBody)
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}
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if err = gjson.DecodeTo(respBody, result); err != nil {
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g.Log().Errorf(ctx, "[RAGFlow HTTP] 解析响应失败: body=%s, error=%v", string(respBody), err)
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return gerror.Newf("unmarshal response failed: %v", err)
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}
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return
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}
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// buildQueryString 构建查询字符串
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func buildQueryString(params map[string]interface{}) string {
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if len(params) == 0 {
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return ""
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}
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parts := make([]string, 0, len(params))
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for k, v := range params {
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parts = append(parts, url.QueryEscape(k)+"="+url.QueryEscape(g.NewVar(v).String()))
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}
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return strings.Join(parts, "&")
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}
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