Go-ReJSON is a Go client for ReJSON Redis Module.
ReJSON is a Redis module that implements ECMA-404 The JSON Data Interchange Standard as a native data type. It allows storing, updating and fetching JSON values from Redis keys (documents).
Primary features of ReJSON Module:
* Full support of the JSON standard
* JSONPath-like syntax for selecting element inside documents
* Documents are stored as binary data in a tree structure, allowing fast access to sub-elements
* Typed atomic operations for all JSON values types
Each and every feature of ReJSON Module is fully incorporated in the project.
Enjoy ReJSON with the type-safe Redis client, Go-Redis/Redis or use the print-like Redis-api client GoModule/Redigo.
Go-ReJSON supports both the clients. Use any of the above two client you want, Go-ReJSON helps you out with all its features and functionalities in a more generic and standard way.
Support for mediocregopher/radix and other Redis clients is in our RoadMap. Any contributions on the support for other clients is hearty welcome.
go get github.com/nitishm/go-rejson
package main
import (
"encoding/json"
"flag"
"fmt"
"log"
"github.com/nitishm/go-rejson"
goredis "github.com/go-redis/redis/v8"
"github.com/gomodule/redigo/redis"
)
// Name - student name
type Name struct {
First string `json:"first,omitempty"`
Middle string `json:"middle,omitempty"`
Last string `json:"last,omitempty"`
}
// Student - student object
type Student struct {
Name Name `json:"name,omitempty"`
Rank int `json:"rank,omitempty"`
}
func Example_JSONSet(rh *rejson.Handler) {
student := Student{
Name: Name{
"Mark",
"S",
"Pronto",
},
Rank: 1,
}
res, err := rh.JSONSet("student", ".", student)
if err != nil {
log.Fatalf("Failed to JSONSet")
return
}
if res.(string) == "OK" {
fmt.Printf("Success: %s\n", res)
} else {
fmt.Println("Failed to Set: ")
}
studentJSON, err := redis.Bytes(rh.JSONGet("student", "."))
if err != nil {
log.Fatalf("Failed to JSONGet")
return
}
readStudent := Student{}
err = json.Unmarshal(studentJSON, &readStudent)
if err != nil {
log.Fatalf("Failed to JSON Unmarshal")
return
}
fmt.Printf("Student read from redis : %#v\n", readStudent)
}
func main() {
var addr = flag.String("Server", "localhost:6379", "Redis server address")
rh := rejson.NewReJSONHandler()
flag.Parse()
// Redigo Client
conn, err := redis.Dial("tcp", *addr)
if err != nil {
log.Fatalf("Failed to connect to redis-server @ %s", *addr)
}
defer func() {
_, err = conn.Do("FLUSHALL")
err = conn.Close()
if err != nil {
log.Fatalf("Failed to communicate to redis-server @ %v", err)
}
}()
rh.SetRedigoClient(conn)
fmt.Println("Executing Example_JSONSET for Redigo Client")
Example_JSONSet(rh)
// GoRedis Client
cli := goredis.NewClient(&goredis.Options{Addr: *addr})
defer func() {
if err := cli.FlushAll().Err(); err != nil {
log.Fatalf("goredis - failed to flush: %v", err)
}
if err := cli.Close(); err != nil {
log.Fatalf("goredis - failed to communicate to redis-server: %v", err)
}
}()
rh.SetGoRedisClient(cli)
fmt.Println("\nExecuting Example_JSONSET for Redigo Client")
Example_JSONSet(rh)
}
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