73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package middleware
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import (
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"fmt"
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"net/http"
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"github.com/QuantumNous/new-api/common"
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"github.com/gin-gonic/gin"
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)
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const (
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EmailVerificationRateLimitMark = "EV"
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EmailVerificationMaxRequests = 2 // 30秒内最多2次
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EmailVerificationDuration = 30 // 30秒时间窗口
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)
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func redisEmailVerificationRateLimiter(c *gin.Context) {
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allowed, _, ttlSeconds, err := redisFixedWindowTake(
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c.Request.Context(),
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redisIPRateLimitKey(EmailVerificationRateLimitMark, c.ClientIP()),
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EmailVerificationMaxRequests,
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EmailVerificationDuration,
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)
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if err != nil {
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memoryEmailVerificationRateLimiter(c)
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return
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}
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if allowed {
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c.Next()
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return
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}
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waitSeconds := int64(EmailVerificationDuration)
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if ttlSeconds > 0 {
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waitSeconds = ttlSeconds
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}
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c.JSON(http.StatusTooManyRequests, gin.H{
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"success": false,
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"message": fmt.Sprintf("发送过于频繁，请等待 %d 秒后再试", waitSeconds),
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})
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c.Abort()
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}
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func memoryEmailVerificationRateLimiter(c *gin.Context) {
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key := EmailVerificationRateLimitMark + ":" + c.ClientIP()
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if !inMemoryRateLimiter.Request(key, EmailVerificationMaxRequests, EmailVerificationDuration) {
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c.JSON(http.StatusTooManyRequests, gin.H{
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"success": false,
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"message": "发送过于频繁，请稍后再试",
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})
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c.Abort()
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return
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}
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c.Next()
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}
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func EmailVerificationRateLimit() gin.HandlerFunc {
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// Keep the fallback ready before requests arrive so a concurrent Redis
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// outage cannot race the in-memory limiter's first initialization.
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inMemoryRateLimiter.Init(common.RateLimitKeyExpirationDuration)
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return func(c *gin.Context) {
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if common.RedisEnabled {
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redisEmailVerificationRateLimiter(c)
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} else {
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memoryEmailVerificationRateLimiter(c)
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}
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}
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}
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