优化
This commit is contained in:
truewhile
2026-08-24 17:00:18 +08:00
parent afae22ffe2
commit 0aff87c69d
39 changed files with 846 additions and 219 deletions
+72 -41
View File
@@ -1,18 +1,16 @@
// 115 开放平台 HTTP 客户端(移植自 QMediaSync 的 v115open,去掉 resty 依赖,
// 使用 net/http + 简单限流重试;只保留只读能力:授权/列目录/详情/下载直链)。
// 115 开放平台 HTTP 客户端(集成全局三级令牌桶限流、熔断保护与防 405 重定向策略)。
package cloud115
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strings"
"sync"
"sync/atomic"
"time"
)
@@ -22,21 +20,35 @@ type OpenClient struct {
HTTP *http.Client
AccessToken string
RefreshTokenStr string
// 全局 QPS 限流(115 开放平台免费额度较低)
lastSecond int64
reqInSecond int64
executor *QueueExecutor
}
var openClientMu sync.Mutex
// default115HTTPClient 创建带有防 405 重定向保护的 http.Client。
func default115HTTPClient() *http.Client {
return &http.Client{
Timeout: 60 * time.Second,
// 防止 Go 标准库在遇到 301/302/307 重定向时将 POST 降级为 GET 导致 115 报 405 Method Not Allowed
CheckRedirect: func(req *http.Request, via []*http.Request) error {
if len(via) >= 5 {
return errors.New("stopped after 5 redirects")
}
// 如果原请求是 POST,重定向时不允许静默转为 GET(直接终止自动重定向,由业务层处理响应)
if len(via) > 0 && via[len(via)-1].Method == http.MethodPost {
return http.ErrUseLastResponse
}
return nil
},
}
}
// NewOpenClient 构造客户端。
func NewOpenClient(appID, accessToken, refreshToken string) *OpenClient {
return &OpenClient{
AppID: appID,
HTTP: &http.Client{Timeout: 60 * time.Second},
HTTP: default115HTTPClient(),
AccessToken: accessToken,
RefreshTokenStr: refreshToken,
executor: GetGlobalExecutor(),
}
}
@@ -46,30 +58,6 @@ func (c *OpenClient) SetAuthToken(accessToken, refreshToken string) {
c.RefreshTokenStr = refreshToken
}
// throttle 简单的每秒限流(默认 4 QPS,115 免费应用限额约 5 QPS)。
func (c *OpenClient) throttle(n int) {
for i := 0; i < n; i++ {
now := time.Now().Unix()
last := atomic.LoadInt64(&c.lastSecond)
if last != now {
if atomic.CompareAndSwapInt64(&c.lastSecond, last, now) {
atomic.StoreInt64(&c.reqInSecond, 0)
}
}
count := atomic.LoadInt64(&c.reqInSecond)
if count >= 4 {
time.Sleep(300 * time.Millisecond)
i--
continue
}
if atomic.CompareAndSwapInt64(&c.reqInSecond, count, count+1) {
return
}
time.Sleep(50 * time.Millisecond)
i--
}
}
// RespState 兼容 115 不同端点返回的 state 类型(proapi 返回布尔、passport 返回数字)。
type RespState bool
@@ -101,38 +89,65 @@ type RespBase struct {
Raw json.RawMessage `json:"-"` // 原始响应体(外层附加字段用)
}
// doJSON 执行 GET 请求并解析为统一响应;带 AccessToken(access=true 时)。
// doJSON 执行 HTTP 请求并解析为统一响应;带 AccessToken(access=true 时)。
func (c *OpenClient) doJSON(ctx context.Context, method, rawURL string, form map[string]string, access bool, retries int) (*RespBase, error) {
executor := c.executor
if executor == nil {
executor = GetGlobalExecutor()
}
var lastErr error
for attempt := 0; attempt <= retries; attempt++ {
c.throttle(1)
// 1. 获取全局三级令牌桶(QPS/QPM/QPH)令牌,若在熔断状态则阻塞等待冷却
if err := executor.Acquire(ctx); err != nil {
return nil, err
}
req, err := c.buildRequest(ctx, method, rawURL, form, access)
if err != nil {
return nil, err
}
resp, err := c.HTTP.Do(req)
if err != nil {
lastErr = err
if attempt < retries {
time.Sleep(time.Duration(attempt+1) * 500 * time.Millisecond)
time.Sleep(time.Duration(attempt+1) * 1 * time.Second)
continue
}
return nil, err
}
body, readErr := io.ReadAll(io.LimitReader(resp.Body, 16<<20))
_ = resp.Body.Close()
if readErr != nil {
lastErr = readErr
continue
}
// 检查 HTTP 状态码:特别处理 405/406/429 等限流和异常阻断
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
if resp.StatusCode == http.StatusMethodNotAllowed || resp.StatusCode == http.StatusNotAcceptable || resp.StatusCode == http.StatusTooManyRequests {
// 触发全局熔断冷却,防止短时间连续重试导致 IP 被完全拉黑
executor.MarkThrottled()
lastErr = fmt.Errorf("115 接口触发频控/安全拦截(HTTP %d):%s", resp.StatusCode, strings.TrimSpace(string(body)))
if attempt < retries {
// 阻塞等待 115 限流冷却解封后自动重试当前请求
if waitErr := executor.throttleManager.WaitThrottleRecovery(ctx); waitErr != nil {
return nil, waitErr
}
continue
}
return nil, lastErr
}
lastErr = fmt.Errorf("115 接口返回 HTTP %d:%s", resp.StatusCode, strings.TrimSpace(string(body)))
if attempt < retries {
time.Sleep(time.Duration(attempt+1) * 500 * time.Millisecond)
time.Sleep(time.Duration(attempt+1) * 1 * time.Second)
continue
}
return nil, lastErr
}
var base RespBase
if err := json.Unmarshal(body, &base); err != nil {
return nil, fmt.Errorf("115 接口响应解析失败:%w", err)
@@ -141,13 +156,29 @@ func (c *OpenClient) doJSON(ctx context.Context, method, rawURL string, form map
if base.State {
return &base, nil
}
// 业务失败:限流/Token 错误不重试,其余按配置重试
if IsThrottleCode(base.Code) || isTokenCode(base.Code) {
// 业务返回限流错误码(406 / 770004):标记全局熔断,等待冷却后重试
if IsThrottleCode(base.Code) {
executor.MarkThrottled()
lastErr = NewOpenAPIResponseError(base.Code, base.Errno, base.Message, base.Error, "115 访问频率达到上限,已进入冷却")
if attempt < retries {
// 阻塞等待限流冷却解封后自动重试当前请求
if waitErr := executor.throttleManager.WaitThrottleRecovery(ctx); waitErr != nil {
return nil, waitErr
}
continue
}
return &base, lastErr
}
// Token 失效不重试
if isTokenCode(base.Code) {
return &base, nil
}
lastErr = NewOpenAPIResponseError(base.Code, base.Errno, base.Message, base.Error, "115 接口调用失败")
if attempt < retries {
time.Sleep(time.Duration(attempt+1) * 500 * time.Millisecond)
time.Sleep(time.Duration(attempt+1) * 1 * time.Second)
continue
}
return &base, lastErr