LamNguyen done assignment about redis week2

cmd/student-manager/main.go

@@ -1,4 +1,4 @@
-package main
+package main2
 
 import (
 	"encoding/json"

go.mod

@@ -3,39 +3,42 @@ module github.com/EngineerProOrg/BE-K01
 go 1.19
 
 require (
-	github.com/gin-gonic/gin v1.9.0
+	github.com/gin-gonic/gin v1.9.1
 	github.com/go-redis/redis/v8 v8.11.5
 	gorm.io/driver/mysql v1.5.1
 	gorm.io/gorm v1.25.1
 )
 
 require (
-	github.com/bytedance/sonic v1.8.0 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/bytedance/sonic v1.9.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.11.2 // indirect
+	github.com/go-playground/validator/v10 v10.14.1 // indirect
+	github.com/go-redis/redis v6.15.9+incompatible // indirect
 	github.com/go-sql-driver/mysql v1.7.0 // indirect
-	github.com/goccy/go-json v0.10.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
-	github.com/leodido/go-urn v1.2.1 // indirect
-	github.com/mattn/go-isatty v0.0.17 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/redis/go-redis/v9 v9.0.5 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.2.9 // indirect
-	golang.org/x/arch v0.0.0-20210923205945-b76863e36670 // indirect
-	golang.org/x/crypto v0.5.0 // indirect
-	golang.org/x/net v0.7.0 // indirect
-	golang.org/x/sys v0.5.0 // indirect
-	golang.org/x/text v0.7.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // indirect
+	golang.org/x/arch v0.3.0 // indirect
+	golang.org/x/crypto v0.9.0 // indirect
+	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -0,0 +1,93 @@
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s=
+github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 h1:qSGYFH7+jGhDF8vLC+iwCD4WpbV1EBDSzWkJODFLams=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+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/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q7OhCmWKU=
+github.com/gabriel-vasile/mimetype v1.4.2/go.mod h1:zApsH/mKG4w07erKIaJPFiX0Tsq9BFQgN3qGY5GnNgA=
+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 v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg=
+github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
+github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
+github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
+github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
+github.com/go-playground/validator/v10 v10.14.1 h1:9c50NUPC30zyuKprjL3vNZ0m5oG+jU0zvx4AqHGnv4k=
+github.com/go-playground/validator/v10 v10.14.1/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
+github.com/go-redis/redis v6.15.9+incompatible h1:K0pv1D7EQUjfyoMql+r/jZqCLizCGKFlFgcHWWmHQjg=
+github.com/go-redis/redis v6.15.9+incompatible/go.mod h1:NAIEuMOZ/fxfXJIrKDQDz8wamY7mA7PouImQ2Jvg6kA=
+github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
+github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
+github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
+github.com/klauspost/cpuid/v2 v2.2.5 h1:0E5MSMDEoAulmXNFquVs//DdoomxaoTY1kUhbc/qbZg=
+github.com/klauspost/cpuid/v2 v2.2.5/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/leodido/go-urn v1.2.4 h1:XlAE/cm/ms7TE/VMVoduSpNBoyc2dOxHs5MZSwAN63Q=
+github.com/leodido/go-urn v1.2.4/go.mod h1:7ZrI8mTSeBSHl/UaRyKQW1qZeMgak41ANeCNaVckg+4=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
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+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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+github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
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+github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
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+golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
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+golang.org/x/arch v0.3.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
+golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
+golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
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+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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+google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/driver/mysql v1.5.1/go.mod h1:Jo3Xu7mMhCyj8dlrb3WoCaRd1FhsVh+yMXb1jUInf5o=
+gorm.io/gorm v1.25.1/go.mod h1:L4uxeKpfBml98NYqVqwAdmV1a2nBtAec/cf3fpucW/k=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

internal/user/handler/count.go

@@ -0,0 +1,15 @@
+package handler
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+//Dùng hyperloglog để lưu xấp sỉ số người gọi api /ping , và trả về trong api /count
+
+func (hdl *userHandler) CountHyperLogLog() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		count := hdl.redis.PFCount(ctx, "membersCallPingAPI").Val()
+		ctx.JSON(200, gin.H{"count": count})
+	}
+
+}

internal/user/handler/interator.go

@@ -0,0 +1,23 @@
+package handler
+
+import (
+	"github.com/redis/go-redis/v9"
+	"github.com/gin-gonic/gin"
+)
+
+type UserHandler interface {
+	Login() gin.HandlerFunc
+	Ping() gin.HandlerFunc
+	GetCounter() gin.HandlerFunc
+	RateLimitPing() gin.HandlerFunc
+	Top10() gin.HandlerFunc
+	CountHyperLogLog() gin.HandlerFunc
+
+}
+type userHandler struct {
+	redis *redis.Client
+}
+
+func NewUserHandler(redis *redis.Client) UserHandler {
+	return &userHandler{redis: redis}
+}

internal/user/handler/list_counter_request_to_ping.go

@@ -0,0 +1,19 @@
+package handler
+
+import (
+	"github.com/EngineerProOrg/BE-K01/internal/user/model"
+	"github.com/gin-gonic/gin"
+)
+
+// đếm số lượng lần 1 người gọi api /ping
+func (hdl *userHandler) GetCounter() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		var userName model.LoginPing
+		if err := ctx.ShouldBindJSON(&userName); err != nil {
+			ctx.JSON(400, gin.H{"error": err.Error()})
+			return
+		}
+		count := hdl.redis.Get(ctx, userName.Username).Val()
+		ctx.JSON(200, gin.H{"count": count})
+	}
+}

internal/user/handler/login.go

@@ -0,0 +1,48 @@
+package handler
+
+import (
+	"github.com/EngineerProOrg/BE-K01/internal/user/model"
+	"github.com/gin-gonic/gin"
+	"crypto/rand"
+    "encoding/base64"
+	"time"
+
+)
+
+
+// 1 API /login, để tạo session cho mỗi người đăng nhập, dùng redis để lưu session id, user name ấy
+func (hdl *userHandler) Login() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		var user model.User
+		if err := ctx.ShouldBindJSON(&user); err != nil {
+			ctx.JSON(400, gin.H{"error": err.Error()})
+			return
+		}
+
+		sessionId, error := generateSessionID()
+		if error != nil {
+			ctx.JSON(400, gin.H{"error": error.Error()})
+			return
+		}
+		if err := hdl.redis.Set(ctx, sessionId, user.Username, time.Duration(10000000000000)).Err() ; err != nil {
+			ctx.JSON(400, gin.H{"error": err.Error()})
+			return
+		}
+		ctx.JSON(200, gin.H{"sessionId": sessionId})
+	}
+}
+
+func generateSessionID() (string, error) {
+    // Generate 32 bytes of random data
+    randomBytes := make([]byte, 32)
+    _, err := rand.Read(randomBytes)
+
+    if err != nil {
+        return "", err
+    }
+
+    // Encode the random data to base64
+    sessionID := base64.URLEncoding.EncodeToString(randomBytes)
+
+    return sessionID, nil
+}

internal/user/handler/ping.go

@@ -0,0 +1,37 @@
+package handler
+
+import (
+	"github.com/EngineerProOrg/BE-K01/internal/user/model"
+	"github.com/gin-gonic/gin"
+	"time"
+)
+
+// 1 API /ping chỉ cho phép 1 người được gọi tại một thời điểm ( với sleep ở bên trong api đó trong 5s)
+func (hdl *userHandler) Ping() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+
+		var nameUser model.LoginPing
+		if err := ctx.ShouldBindJSON(&nameUser); err != nil {
+			ctx.JSON(400, gin.H{"error": err.Error()})
+			return
+		}
+
+		lockKey := "distributed-lock"
+		lockValue := "distributed-lock-value"
+
+		setNXResult := hdl.redis.SetNX(ctx, lockKey, lockValue, time.Duration(5000000000))
+		if setNXResult.Err() != nil || !setNXResult.Val() {
+			ctx.JSON(400, gin.H{"error": "lock is being used"})
+			return
+		}
+
+
+		hdl.redis.Incr(ctx, nameUser.Username) // serve as a counter for the number of requests of each user
+
+		hdl.redis.ZIncrBy(ctx, "leaderboard", 1, nameUser.Username) // serve for api top10 (leaderboard)
+
+		hdl.redis.PFAdd(ctx, "membersCallPingAPI", nameUser.Username) // serve for api count unique users call api /ping use hyperloglog
+
+		ctx.JSON(200, gin.H{"message": "pong"})
+	}
+}

internal/user/handler/rate_limit_ping.go

@@ -0,0 +1,33 @@
+package handler
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/EngineerProOrg/BE-K01/internal/user/model"
+	"time"
+)
+
+// rate limit mỗi người chỉ được gọi API /ping 2 lần trong 60s
+
+func (hdl *userHandler) RateLimitPing() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		var nameUser model.LoginPing
+		if err := ctx.ShouldBindJSON(&nameUser); err != nil {
+			ctx.JSON(400, gin.H{"error": err.Error()})
+			return
+		}
+
+		exists, _ := hdl.redis.Exists(ctx, nameUser.Username).Result()
+		if exists == 0 {
+			hdl.redis.Set(ctx, nameUser.Username, 0, time.Duration(60*time.Second))
+		} else {
+			count := hdl.redis.Get(ctx, nameUser.Username).Val()
+			if count == "2" {
+				ctx.JSON(400, gin.H{"error": "limit 2 requests per 5s"})
+				return
+			}
+		}
+		hdl.redis.Incr(ctx, nameUser.Username) // serve as a counter for the number of requests of each user
+
+		ctx.JSON(200, gin.H{"message": "pong"})
+	}
+}

internal/user/handler/top10.go

@@ -0,0 +1,16 @@
+package handler
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+func (hdl *userHandler) Top10() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		top10, err := hdl.redis.ZRevRangeWithScores(ctx, "leaderboard", 0, 9).Result()
+		if err != nil {
+			ctx.JSON(400, gin.H{"error": err.Error()})
+			return
+		}
+		ctx.JSON(200, gin.H{"top10": top10})
+	}
+}

internal/user/model/user.go

@@ -0,0 +1,11 @@
+package model
+
+
+type User struct {
+	Username string `json:"username"`
+	Password string `json:"password"`	
+}
+
+type LoginPing struct {
+	Username string `json:"username"`
+}

main.go

@@ -0,0 +1,20 @@
+package main
+
+import(
+	"github.com/gin-gonic/gin"
+	"github.com/EngineerProOrg/BE-K01/internal/user/handler"
+	"github.com/EngineerProOrg/BE-K01/tools/redis"
+)
+func main() {
+	router := gin.Default()
+
+	redis := redis.NewRedisClient()
+	userHdl := handler.NewUserHandler(redis)
+	router.POST("/login", userHdl.Login())
+	router.GET("/ping", userHdl.Ping())
+	router.GET("/get-counter", userHdl.GetCounter())
+	router.GET("/rate-limit-ping", userHdl.RateLimitPing())
+	router.GET("/top10", userHdl.Top10())
+	router.GET("/count-hyperloglog", userHdl.CountHyperLogLog())
+	router.Run(":8080")
+}