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https://github.com/nitishm/go-rejson

Golang client for redislabs' ReJSON module with support for multilple redis clients (redigo, go-redis)
https://github.com/nitishm/go-rejson

go-redis golang golang-client json multiclient redigo redis redis-client rejson

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Golang client for redislabs' ReJSON module with support for multilple redis clients (redigo, go-redis)

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> _Note: Currently, go-ReJSON only support redislabs/rejson with version <=1.0.8. If you are using higher versions, some commands might not work as expected_

# Go-ReJSON - a golang client for ReJSON (a JSON data type for Redis)

Go-ReJSON is a [Go](https://golang.org/) client for [ReJSON](https://github.com/RedisLabsModules/rejson) Redis Module.

[![Go Reference](https://pkg.go.dev/badge/github.com/nitishm/go-rejson.svg)](https://pkg.go.dev/github.com/nitishm/go-rejson/v4)
![test](https://github.com/nitishm/go-rejson/workflows/test/badge.svg)
![code-analysis](https://github.com/nitishm/go-rejson/workflows/code-analysis/badge.svg)
[![codecov](https://coveralls.io/repos/github/nitishm/go-rejson/badge.svg?branch=master)](https://coveralls.io/github/nitishm/go-rejson?branch=master)
[![Go Report Card](https://goreportcard.com/badge/github.com/nitishm/go-rejson)](https://goreportcard.com/report/github.com/nitishm/go-rejson)
[![GitHub release](https://img.shields.io/github/release/nitishm/go-rejson.svg)](https://github.com/nitishm/go-rejson/releases)

> 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`](https://github.com/go-redis/redis) or use the
print-like Redis-api client [`GoModule/Redigo`](https://github.com/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 to the support for other
clients is hearty welcome.

## Installation

go get github.com/nitishm/go-rejson/v4

## Example usage

```golang
package main

import (
"context"
"encoding/json"
"flag"
"fmt"
"log"

"github.com/nitishm/go-rejson/v4"
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(context.Background()).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 GoRedis Client")
Example_JSONSet(rh)
}
```