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