init: quickie - redis caching implementation

Author: CompeyDev

.gitignore

@@ -0,0 +1,22 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# Ignore redis binary dump (dump.rdb) files
+
+*.rdb

go.mod

@@ -0,0 +1,34 @@
+module github.com/datalinkhq/quickie
+
+go 1.19
+
+require (
+	github.com/JGLTechnologies/gin-rate-limit v1.5.2
+	github.com/gin-gonic/gin v1.8.1
+	github.com/go-redis/redis/v8 v8.11.5
+)
+
+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 v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-playground/validator/v10 v10.11.1 // indirect
+	github.com/goccy/go-json v0.9.11 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/onsi/gomega v1.24.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
+	github.com/ugorji/go/codec v1.2.7 // indirect
+	golang.org/x/crypto v0.1.0 // indirect
+	golang.org/x/net v0.1.0 // indirect
+	golang.org/x/sys v0.1.0 // indirect
+	golang.org/x/text v0.4.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)

go.sum

@@ -0,0 +1,109 @@
+github.com/JGLTechnologies/gin-rate-limit v1.5.2 h1:zPMvOBhiIE6rozLFnLHes5EhCzkqCwILhTANuSfYKiw=
+github.com/JGLTechnologies/gin-rate-limit v1.5.2/go.mod h1:XGo66/RNHkTgCPdaaFyFtTVnm2G45FDrvT5OFjCTnQ0=
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+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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src/impl.go

@@ -0,0 +1,146 @@
+package main
+
+import (
+	json "encoding/json"
+	fmt "fmt"
+	http "net/http"
+	os "os"
+	time "time"
+
+	ratelimit "github.com/JGLTechnologies/gin-rate-limit"
+	gin "github.com/gin-gonic/gin"
+	redis "github.com/go-redis/redis/v8"
+)
+
+type dataValue struct {
+	Table string `json:"table"`
+	Value any    `json:"value"`
+}
+
+func main() {
+	gin.SetMode(gin.ReleaseMode)
+	secret := os.Getenv("SECRET")
+
+	client := redis.NewClient(&redis.Options{
+		Addr:     "localhost:6379",
+		Password: "",
+		DB:       0,
+	})
+
+	store := ratelimit.RedisStore(&ratelimit.RedisOptions{
+		RedisClient: client,
+		Rate:        time.Second,
+		Limit:       5,
+	})
+	limiter := ratelimit.RateLimiter(store, &ratelimit.Options{
+		ErrorHandler: requestsHandler,
+		KeyFunc:      getClientIP,
+	})
+	router := gin.Default()
+	router.POST("/set/:table", limiter, func(c *gin.Context) {
+		_, clientInitErr := client.Ping(c).Result()
+
+		if clientInitErr != nil {
+			panic("Failed to initialize redis client! Is the server running?")
+		}
+		if c.GetHeader("Authorization") == secret {
+			fmt.Println(c.GetHeader("Authorization"))
+			fmt.Println(secret)
+			value := c.Query("value")
+			key := c.Query("key")
+			table := c.Param("table")
+			fmt.Println("Table: ", table)
+
+			if value == "" || key == "" {
+				data := generateResponseData(400, "error", "Invalid request")
+				c.JSON(http.StatusOK, data)
+				return
+
+			} else {
+				var dataValues []*dataValue
+				dataValues = append(dataValues, &dataValue{Table: table, Value: value})
+
+				s, _ := json.Marshal(dataValues)
+
+				_, err := client.Set(c, fmt.Sprintf("%s_%s", table, key), s, 0).Result()
+
+				if err != nil {
+					c.JSON(http.StatusInternalServerError, generateResponseData(500, "Internal Server Error", "Saving data failed!", fmt.Sprint(err)))
+
+					return
+				}
+
+				fetched, err := client.Get(c, fmt.Sprintf("%s_%s", table, key)).Result()
+				trueValue := string(s)
+				// Verify if the saved value matches the requested value to be saved
+				if fetched != trueValue || err != nil {
+					c.JSON(http.StatusInternalServerError, generateResponseData(500, "Internal Server Error", "Value matching failed!"))
+					return
+				} else if fetched == fmt.Sprint(s) && err == nil {
+					data := generateResponseData(200, "success", fmt.Sprintf("Key: %s", key), fmt.Sprintf("Value: %s", fetched))
+					c.JSON(http.StatusOK, data)
+					return
+				}
+
+			}
+
+		} else {
+			data := generateResponseData(400, "Bad Request")
+			c.JSON(http.StatusBadRequest, data)
+			return
+		}
+	})
+
+	router.GET("/get/:table", limiter, func(c *gin.Context) {
+		if c.GetHeader("Authorization") == secret {
+			// TODO: search for a key using a reference, like "findMany where condition" in prisma.
+			key := c.Query("key")
+			table := c.Param("table")
+			if key == "" {
+				c.JSON(http.StatusBadRequest, generateResponseData(400, "Bad Request"))
+				return
+			} else {
+				value, err := client.Get(c, fmt.Sprintf("%s_%s", table, key)).Result()
+
+				if err != nil {
+					c.JSON(http.StatusInternalServerError, generateResponseData(500, "Internal Server Error"))
+					return
+				} else {
+					c.JSON(http.StatusOK, generateResponseData(200, "success", value))
+					return
+				}
+			}
+		} else {
+			data := generateResponseData(400, "Bad Request")
+			c.JSON(http.StatusBadRequest, data)
+			return
+		}
+	})
+
+	router.Run()
+}
+
+func generateResponseData(code int, status string, other ...interface{}) gin.H {
+	return gin.H{
+		"code":    code,
+		"status":  status,
+		"details": other,
+	}
+}
+
+func (s dataValue) MarshalBinary() ([]byte, error) {
+	return json.Marshal(s)
+}
+
+func (s dataValue) UnmarshalBinary(data []byte) error {
+	return json.Unmarshal(data, &s)
+}
+
+func getClientIP(c *gin.Context) string {
+	return c.ClientIP()
+}
+
+func requestsHandler(c *gin.Context, info ratelimit.Info) {
+	resetIn := time.Until(info.ResetTime).String()
+	c.JSON(http.StatusTooManyRequests, generateResponseData(429, "Too Many Requests", fmt.Sprintf("Try again in %s", resetIn)))
+}

src/redis.go

@@ -0,0 +1,12 @@
+package main
+
+import "github.com/go-redis/redis/v8"
+
+// Use this library for redis related operations as a wrapper
+func InitializeRedisClient() *redis.Client {
+	return redis.NewClient(&redis.Options{
+		Addr:     "localhost:6379",
+		Password: "",
+		DB:       0,
+	})
+}

version.go

@@ -0,0 +1,3 @@
+package quickie
+
+const Version = "v0.0.1"