From 85bd2fb1af5af64a032cab9d872c552cdfe10c7f Mon Sep 17 00:00:00 2001 From: Nebulizer1213 Date: Sun, 19 Jun 2022 01:43:12 -0400 Subject: [PATCH] update --- GinRateLimit.go | 15 +++-- README.md | 13 ++-- go.mod | 38 ++++++----- go.sum | 165 ++++++++++++++++++------------------------------ redis.go | 9 ++- 5 files changed, 107 insertions(+), 133 deletions(-) diff --git a/GinRateLimit.go b/GinRateLimit.go index ed18a52..3824ed3 100644 --- a/GinRateLimit.go +++ b/GinRateLimit.go @@ -31,7 +31,7 @@ type InMemoryStoreType struct { mutex *sync.Mutex } -func (s *InMemoryStoreType) Limit(key string) bool { +func (s *InMemoryStoreType) Limit(key string) (bool, time.Duration) { s.mutex.Lock() defer s.mutex.Unlock() _, ok := s.data[key] @@ -42,17 +42,18 @@ func (s *InMemoryStoreType) Limit(key string) bool { if u.ts+s.rate <= time.Now().Unix() { u.tokens = s.limit } + remaining := time.Duration((s.rate - (time.Now().Unix() - u.ts)) * time.Second.Nanoseconds()) if u.tokens <= 0 { - return true + return true, remaining } u.tokens-- u.ts = time.Now().Unix() s.data[key] = u - return false + return false, time.Duration(0) } type store interface { - Limit(key string) bool + Limit(key string) (bool, time.Duration) } func InMemoryStore(rate time.Duration, limit int) *InMemoryStoreType { @@ -63,12 +64,12 @@ func InMemoryStore(rate time.Duration, limit int) *InMemoryStoreType { return &store } -func RateLimiter(keyFunc func(c *gin.Context) string, errorHandler func(c *gin.Context), s store) func(ctx *gin.Context) { +func RateLimiter(keyFunc func(c *gin.Context) string, errorHandler func(c *gin.Context, remaining time.Duration), s store) func(ctx *gin.Context) { return func(c *gin.Context) { key := keyFunc(c) - limited := s.Limit(key) + limited, remaining := s.Limit(key) if limited { - errorHandler(c) + errorHandler(c, remaining) c.Abort() } else { c.Next() diff --git a/README.md b/README.md index 8125287..561fd89 100644 --- a/README.md +++ b/README.md @@ -33,8 +33,8 @@ func keyFunc(c *gin.Context) string { return c.ClientIP() } -func errorHandler(c *gin.Context) { - c.String(429, "Too many requests") +func errorHandler(c *gin.Context, remaining time.Duration) { + c.String(429, "Too many requests. Try again in "+remaining.String()) } func main() { @@ -71,8 +71,8 @@ func keyFunc(c *gin.Context) string { return c.ClientIP() } -func errorHandler(c *gin.Context) { - c.String(429, "Too many requests") +func errorHandler(c *gin.Context, remaining time.Duration) { + c.String(429, "Too many requests. Try again in "+remaining.String()) } func main() { @@ -94,12 +94,15 @@ Custom Store Example ```go package main +import "time" + type CustomStore struct { } // Your store must have a method called Limit that takes a key and returns a bool -func (s *CustomStore) Limit(key string) bool { +func (s *CustomStore) Limit(key string) (bool, time.Duration) { // Do your rate limit logic, and return true if the user went over the rate limit, otherwise return false + // Return the amount of time the client needs to wait to make a new request if UserWentOverLimit { return true } diff --git a/go.mod b/go.mod index 0b98eba..a4001d3 100644 --- a/go.mod +++ b/go.mod @@ -1,28 +1,34 @@ module github.com/JGLTechnologies/GinRateLimit -go 1.17 +go 1.18 require ( - github.com/gin-gonic/gin v1.7.7 - github.com/go-redis/redis/v8 v8.11.4 + github.com/gin-gonic/gin v1.8.1 + github.com/go-redis/redis/v8 v8.11.5 +) + +require ( + github.com/goccy/go-json v0.9.7 // indirect + github.com/pelletier/go-toml/v2 v2.0.1 // indirect + golang.org/x/net v0.0.0-20210428140749-89ef3d95e781 // indirect + golang.org/x/text v0.3.6 // indirect ) require ( github.com/cespare/xxhash/v2 v2.1.2 // indirect github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect github.com/gin-contrib/sse v0.1.0 // indirect - github.com/go-playground/locales v0.13.0 // indirect - github.com/go-playground/universal-translator v0.17.0 // indirect - github.com/go-playground/validator/v10 v10.4.1 // indirect - github.com/golang/protobuf v1.5.2 // indirect - github.com/json-iterator/go v1.1.9 // indirect - github.com/leodido/go-urn v1.2.0 // indirect - github.com/mattn/go-isatty v0.0.12 // indirect + github.com/go-playground/locales v0.14.0 // indirect + github.com/go-playground/universal-translator v0.18.0 // indirect + github.com/go-playground/validator/v10 v10.10.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/leodido/go-urn v1.2.1 // indirect + github.com/mattn/go-isatty v0.0.14 // indirect github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect - github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect - github.com/ugorji/go/codec v1.1.7 // indirect - golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 // indirect - golang.org/x/sys v0.0.0-20210423082822-04245dca01da // indirect - google.golang.org/protobuf v1.26.0 // indirect - gopkg.in/yaml.v2 v2.4.0 // indirect; indirec + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/ugorji/go/codec v1.2.7 // indirect + golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect + golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect + google.golang.org/protobuf v1.28.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect ) diff --git a/go.sum b/go.sum index 058a7e8..7bacd89 100644 --- a/go.sum +++ b/go.sum @@ -1,139 +1,100 @@ github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE= github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78= github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc= -github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4= -github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ= github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE= github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI= -github.com/gin-gonic/gin v1.7.7 h1:3DoBmSbJbZAWqXJC3SLjAPfutPJJRN1U5pALB7EeTTs= -github.com/gin-gonic/gin v1.7.7/go.mod h1:axIBovoeJpVj8S3BwE0uPMTeReE4+AfFtqpqaZ1qq1U= +github.com/gin-gonic/gin v1.8.1 h1:4+fr/el88TOO3ewCmQr8cx/CtZ/umlIRIs5M4NTNjf8= +github.com/gin-gonic/gin v1.8.1/go.mod h1:ji8BvRH1azfM+SYow9zQ6SZMvR8qOMZHmsCuWR9tTTk= github.com/go-playground/assert/v2 v2.0.1 h1:MsBgLAaY856+nPRTKrp3/OZK38U/wa0CcBYNjji3q3A= github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4= -github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q= -github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8= -github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no= -github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA= -github.com/go-playground/validator/v10 v10.4.1 h1:pH2c5ADXtd66mxoE0Zm9SUhxE20r7aM3F26W0hOn+GE= -github.com/go-playground/validator/v10 v10.4.1/go.mod h1:nlOn6nFhuKACm19sB/8EGNn9GlaMV7XkbRSipzJ0Ii4= -github.com/go-redis/redis/v8 v8.11.4 h1:kHoYkfZP6+pe04aFTnhDH6GDROa5yJdHJVNxV3F46Tg= -github.com/go-redis/redis/v8 v8.11.4/go.mod h1:2Z2wHZXdQpCDXEGzqMockDpNyYvi2l4Pxt6RJr792+w= -github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE= -github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= -github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw= -github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= -github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= -github.com/golang/protobuf v1.4.0-rc.2/go.mod 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h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI= +github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo= +github.com/goccy/go-json v0.9.7 h1:IcB+Aqpx/iMHu5Yooh7jEzJk1JZ7Pjtmys2ukPr7EeM= +github.com/goccy/go-json v0.9.7/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I= github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= -github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw= -github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= -github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= -github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= -github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU= github.com/google/go-cmp v0.5.5/go.mod 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v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo= +gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/redis.go b/redis.go index ef85436..b753327 100644 --- a/redis.go +++ b/redis.go @@ -2,6 +2,7 @@ package GinRateLimit import ( "context" + "fmt" "github.com/go-redis/redis/v8" "time" ) @@ -13,7 +14,7 @@ type RedisStoreType struct { ctx context.Context } -func (s *RedisStoreType) Limit(key string) bool { +func (s *RedisStoreType) Limit(key string) (bool, time.Duration) { p := s.client.Pipeline() defer func(s *RedisStoreType, p redis.Pipeliner) { p.Exec(s.ctx) @@ -32,12 +33,14 @@ func (s *RedisStoreType) Limit(key string) bool { if ts+s.rate <= time.Now().Unix() { p.Set(s.ctx, key+"hits", 0, time.Duration(0)) } + remaining := time.Duration((s.rate - (time.Now().Unix() - ts)) * time.Second.Nanoseconds()) if hits >= int64(s.limit) { - return true + return true, remaining } + fmt.Println(hits) p.Incr(s.ctx, key+"hits") p.Set(s.ctx, key+"ts", time.Now().Unix(), time.Duration(0)) - return false + return false, time.Duration(0) } func RedisStore(rate time.Duration, limit int, redisClient *redis.Client) *RedisStoreType {