48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
// Program adder demonstrates a trivial JSON-RPC server that communicates over
|
|
// the process's stdin and stdout.
|
|
//
|
|
// Usage:
|
|
// go build github.com/creachadair/jrpc2/tools/examples/adder
|
|
// ./adder
|
|
//
|
|
// Queries to try (copy and paste):
|
|
// {"jsonrpc":"2.0", "id":1, "method":"Add", "params":[1,2,3]}
|
|
// {"jsonrpc":"2.0", "id":2, "method":"rpc.serverInfo"}
|
|
//
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"log"
|
|
"os"
|
|
|
|
"github.com/creachadair/jrpc2"
|
|
"github.com/creachadair/jrpc2/channel"
|
|
"github.com/creachadair/jrpc2/handler"
|
|
)
|
|
|
|
// Add will be exported as a method named "Add".
|
|
func Add(ctx context.Context, vs ...int) int {
|
|
sum := 0
|
|
for _, v := range vs {
|
|
sum += v
|
|
}
|
|
return sum
|
|
}
|
|
|
|
func main() {
|
|
// Set up the server to respond to "Add" by calling the add function.
|
|
s := jrpc2.NewServer(handler.Map{
|
|
"Add": handler.New(Add),
|
|
}, nil)
|
|
|
|
// Start the server on a channel comprising stdin/stdout.
|
|
s.Start(channel.Line(os.Stdin, os.Stdout))
|
|
log.Print("Server started")
|
|
|
|
// Wait for the server to exit, and report any errors.
|
|
if err := s.Wait(); err != nil {
|
|
log.Printf("Server exited: %v", err)
|
|
}
|
|
}
|