/
main.go
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/
main.go
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// Copyright (c) 2019 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"context"
"errors"
"fmt"
"log"
"net"
"go.uber.org/yarpc"
"go.uber.org/yarpc/api/transport"
"go.uber.org/yarpc/internal/examples/streaming"
"go.uber.org/yarpc/transport/grpc"
)
type handler struct {
}
func (h *handler) HelloUnary(context.Context, *streaming.HelloRequest) (*streaming.HelloResponse, error) {
return nil, errors.New("NOT READY")
}
func (h *handler) HelloOutStream(streaming.HelloServiceHelloOutStreamYARPCServer) (*streaming.HelloResponse, error) {
return nil, nil
}
func (h *handler) HelloInStream(*streaming.HelloRequest, streaming.HelloServiceHelloInStreamYARPCServer) error {
return nil
}
func (h *handler) HelloThere(stream streaming.HelloServiceHelloThereYARPCServer) error {
for {
msg, err := stream.Recv()
if err != nil {
fmt.Printf("Error reading from stream: %q\n", err.Error())
return err
}
if msg.Id == "exit" {
fmt.Println("Received 'exit' message, closing connection")
return nil
}
fmt.Printf("Received a message: %q\n", msg.Id)
resp := fmt.Sprintf("Got your message: %q, thanks!", msg.Id)
if err := stream.Send(&streaming.HelloResponse{Id: resp}); err != nil {
fmt.Printf("Error sending message to stream: %q\n", err.Error())
return err
}
fmt.Printf("Sent response message: %q\n", resp)
}
}
func main() {
if err := do(); err != nil {
log.Fatal(err)
}
}
func do() error {
var inbound transport.Inbound
listener, err := net.Listen("tcp", "127.0.0.1:24039")
if err != nil {
return err
}
inbound = grpc.NewTransport().NewInbound(listener)
dispatcher := yarpc.NewDispatcher(yarpc.Config{
Name: "keyvalue",
Inbounds: yarpc.Inbounds{inbound},
})
handler := &handler{}
dispatcher.Register(streaming.BuildHelloYARPCProcedures(handler))
if err := dispatcher.Start(); err != nil {
return err
}
select {}
}