jsonrpc-lite

Parse and Serialize JSON-RPC2 messages in golang

https://www.jsonrpc.org/specification

Interface Inspired by https://github.com/teambition/jsonrpc-lite

ID Fork from golang.org/x/tools/internal/jsonrpc2@feee8acb394c170fe9eb4eb9f538b8877d9a3cd4

Features

• No depend
• Only Parse and Serialize JSON-RPC2 messages
• No net.Conn, http, websocket control, You can use any protocol
• Support batch

Examples

package main

import (
	"fmt"
	"github.com/sb-im/jsonrpc-lite"
)

func main() {
	recv := []byte(`
	{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}
	`)

	fmt.Printf("Server RECV: %s\n", recv)
	rpc := jsonrpc.ParseObject(recv)
	if rpc.Type != jsonrpc.TypeRequest {
		panic("Not jsonrpc.TypeRequest")
	}

	send, err := jsonrpc.NewSuccess(rpc.ID, rpc).ToJSON()
	if err != nil {
		panic(err)
	}
	fmt.Printf("Server SEND: %s\n", send)
}

Recv

// alone
rpc := jsonrpc.ParseObject([]byte(`
{"jsonrpc": "2.0", "method": "subtract", "params": {"subtrahend": 23, "minuend": 42}, "id": 3}`
))

if rpc.Type != jsonrpc.TypeRequest {
	fmt.Println(rpc)
}


// Batch
rpcs := jsonrpc.Batch([]byte(`
[
	{"jsonrpc": "2.0", "method": "sum", "params": [1,2,4], "id": "1"},
	{"jsonrpc": "2.0", "method": "notify_hello", "params": [7]},
	{"jsonrpc": "2.0", "method": "subtract", "params": [42,23], "id": "2"},
	{"foo": "boo"},
	{"jsonrpc": "2.0", "method": "foo.get", "params": {"name": "myself"}, "id": "5"},
	{"jsonrpc": "2.0", "method": "get_data", "id": "9"}
]
`))

for i, rpc := range rpcs {
	fmt.Println(i, rpc)
}

Request

data, err := jsonrpc.NewRequest("123", "test", []string{"sss", "zzz"}).ToJSON()
if err != nil {
	panic(err)
}
fmt.Printf("%s\n", data)

Notify

data, err := jsonrpc.NewNotify("test", []string{"sss", "zzz"}).ToJSON()
if err != nil {
	panic(err)
}
fmt.Printf("%s\n", data)

Success

data, err := jsonrpc.NewSuccess(1234, []string{"sss", "zzz"}).ToJSON()
if err != nil {
	panic(err)
}
fmt.Printf("%s\n", data)

Error

Custom error

// NewError
data, err := jsonrpc.NewError(233, 1, "This is Error", []string{"sss", "zzz"}).ToJSON()
if err != nil {
	panic(err)
}
fmt.Printf("%s\n", data)

Errors

The error codes from and including -32768 to -32000 are reserved for pre-defined error

// NewErrors
res := jsonrpc.NewErrors(1234)
res.Errors.ParseError([]string{"data", "data2"})
data, err := res.ToJSON()
if err != nil {
	panic(err)
}
fmt.Printf("%s\n", data)

TODO

• Automatic verification ToJSON() is JSON-RPC 2.0 Specification