Files
smartmate/backend/gateway/middleware/token_quota_guard.go
Losita b08ee17893 Version: 0.9.66.dev.260504
后端:
1. 阶段 2 user/auth 服务边界落地,新增 `cmd/userauth` go-zero zrpc 服务、`services/userauth` 核心实现、gateway user API/zrpc client 与 shared contracts/ports,迁移注册、登录、刷新 token、登出、JWT、黑名单和 token 额度治理
2. gateway 与启动装配切流,`cmd/all` 只保留边缘路由、鉴权和轻量组合,通过 userauth zrpc 访问核心用户能力;拆分 MySQL/Redis 初始化与 AutoMigrate 边界,`userauth` 自迁 `users` 和 token 记账幂等表,`all` 不再迁用户表
3. 清退 Gin 单体旧 user/auth DAO、model、service、router、middleware 和 JWT handler,并同步调整 agent/schedule/cache/outbox 相关调用依赖
4. 补齐 refresh token 防并发重放、MySQL 幂等 token 记账、额度 `>=` 拦截和 RPC 错误映射,避免重复记账与内部错误透出

文档:
1. 新增《学习计划论坛与Token商店PRD》
2026-05-04 15:20:47 +08:00

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package middleware
import (
"context"
"errors"
"net/http"
"time"
"github.com/LoveLosita/smartflow/backend/respond"
"github.com/LoveLosita/smartflow/backend/shared/ports"
"github.com/gin-gonic/gin"
)
// TokenQuotaGuard 在请求入口做 token 额度门禁。
// 职责边界:
// 1. 只负责调用 user/auth 服务判断当前用户是否还能继续消耗 token
// 2. 不再直连 users 表或 Redis 额度细节;
// 3. 额度超限时直接拒绝,不进入业务 handler。
func TokenQuotaGuard(checker ports.TokenQuotaChecker) gin.HandlerFunc {
return func(c *gin.Context) {
if checker == nil {
c.JSON(http.StatusInternalServerError, respond.InternalError(errors.New("token quota checker dependency not initialized")))
c.Abort()
return
}
userID := c.GetInt("user_id")
if userID <= 0 {
c.JSON(http.StatusUnauthorized, respond.ErrUnauthorized)
c.Abort()
return
}
ctx, cancel := context.WithTimeout(c.Request.Context(), 2*time.Second)
defer cancel()
resp, err := checker.CheckTokenQuota(ctx, userID)
if err != nil {
writeRespondError(c, err)
c.Abort()
return
}
if resp == nil || !resp.Allowed {
c.JSON(http.StatusBadRequest, respond.TokenUsageExceedsLimit)
c.Abort()
return
}
c.Next()
}
}