client-server pair done

master
Jordan Orelli 8 years ago
parent adaf7b2454
commit 6de3f3ed55

@ -2,13 +2,83 @@ package main
import ( import (
"fmt" "fmt"
"flag"
"time"
"log"
"os" "os"
"context"
"github.com/therecipe/qt/widgets" "github.com/therecipe/qt/widgets"
"github.com/jordanorelli/grpc-ui/lib/count"
"google.golang.org/grpc"
) )
var (
info_log *log.Logger
error_log *log.Logger
)
func bg(label *widgets.QLabel) {
info_log.Println("bg goroutine started")
defer info_log.Println("bg goroutine exited")
time.Sleep(5*time.Second)
conn, err := grpc.Dial("localhost:9001", grpc.WithInsecure())
if err != nil {
label.SetText(fmt.Sprintf("error: %v", err))
return
}
req := count.NextRequest{Name: "example-param"}
client := count.NewCountClient(conn)
for range time.Tick(time.Second) {
reply, err := client.Next(context.TODO(), &req)
if err != nil {
label.SetText(fmt.Sprintf("error: %v", err))
continue
}
label.SetText(fmt.Sprintf("count: %v", reply.GetVal()))
}
label.SetText(fmt.Sprintf("Connection: %v", conn))
}
func main() { func main() {
fmt.Println("Hey from VSCode") var options struct {
infoLogPath string
errorLogPath string
}
flag.StringVar(&options.infoLogPath, "info-log", "count-client.log", "file path of an info log")
flag.StringVar(&options.errorLogPath, "error-log", "count-client.log", "file path of an error log")
flag.Parse()
{
f, err := os.OpenFile(options.infoLogPath, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
if err != nil {
panic(err)
}
info_log = log.New(f, "i ", log.LstdFlags)
}
{
f, err := os.OpenFile(options.errorLogPath, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
if err != nil {
panic(err)
}
error_log = log.New(f, "e ", log.LstdFlags)
}
widgets.NewQApplication(len(os.Args), os.Args) widgets.NewQApplication(len(os.Args), os.Args)
widgets.QApplication_Exec()
label := widgets.NewQLabel(nil, 0)
label.SetText("this is a label")
label.Show()
info_log.Println("spawning bg goroutine")
go bg(label)
info_log.Println("starting qapplication")
code := widgets.QApplication_Exec()
info_log.Printf("QApplication exited with code: %d\n", code)
os.Exit(code)
} }

@ -0,0 +1,37 @@
package main
import (
"net"
"sync"
"google.golang.org/grpc"
"golang.org/x/net/context"
"github.com/jordanorelli/grpc-ui/lib/count"
)
type countServer struct {
sync.Mutex
last int64
}
func (c *countServer) Next(ctx context.Context, r *count.NextRequest) (*count.NextReply, error) {
return &count.NextReply{Val: c.incr()}, nil
}
func (c *countServer) incr() int64 {
c.Lock()
defer c.Unlock()
c.last += 1
return c.last
}
func main() {
lis, err := net.Listen("tcp", "localhost:9001")
if err != nil {
panic(err)
}
s := grpc.NewServer()
count.RegisterCountServer(s, &countServer{})
s.Serve(lis)
}

@ -0,0 +1,13 @@
syntax = "proto3";
service Count {
rpc Next (NextRequest) returns (NextReply) {}
}
message NextRequest {
string name = 1;
}
message NextReply {
int64 val = 1;
}

@ -0,0 +1,158 @@
// Code generated by protoc-gen-go.
// source: count.proto
// DO NOT EDIT!
/*
Package count is a generated protocol buffer package.
It is generated from these files:
count.proto
It has these top-level messages:
NextRequest
NextReply
*/
package count
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import (
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
type NextRequest struct {
Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
}
func (m *NextRequest) Reset() { *m = NextRequest{} }
func (m *NextRequest) String() string { return proto.CompactTextString(m) }
func (*NextRequest) ProtoMessage() {}
func (*NextRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
func (m *NextRequest) GetName() string {
if m != nil {
return m.Name
}
return ""
}
type NextReply struct {
Val int64 `protobuf:"varint,1,opt,name=val" json:"val,omitempty"`
}
func (m *NextReply) Reset() { *m = NextReply{} }
func (m *NextReply) String() string { return proto.CompactTextString(m) }
func (*NextReply) ProtoMessage() {}
func (*NextReply) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (m *NextReply) GetVal() int64 {
if m != nil {
return m.Val
}
return 0
}
func init() {
proto.RegisterType((*NextRequest)(nil), "NextRequest")
proto.RegisterType((*NextReply)(nil), "NextReply")
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// Client API for Count service
type CountClient interface {
Next(ctx context.Context, in *NextRequest, opts ...grpc.CallOption) (*NextReply, error)
}
type countClient struct {
cc *grpc.ClientConn
}
func NewCountClient(cc *grpc.ClientConn) CountClient {
return &countClient{cc}
}
func (c *countClient) Next(ctx context.Context, in *NextRequest, opts ...grpc.CallOption) (*NextReply, error) {
out := new(NextReply)
err := grpc.Invoke(ctx, "/Count/Next", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for Count service
type CountServer interface {
Next(context.Context, *NextRequest) (*NextReply, error)
}
func RegisterCountServer(s *grpc.Server, srv CountServer) {
s.RegisterService(&_Count_serviceDesc, srv)
}
func _Count_Next_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(NextRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(CountServer).Next(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/Count/Next",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(CountServer).Next(ctx, req.(*NextRequest))
}
return interceptor(ctx, in, info, handler)
}
var _Count_serviceDesc = grpc.ServiceDesc{
ServiceName: "Count",
HandlerType: (*CountServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "Next",
Handler: _Count_Next_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "count.proto",
}
func init() { proto.RegisterFile("count.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 121 bytes of a gzipped FileDescriptorProto
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0xb8, 0xf4, 0xe0, 0x9a, 0x95, 0x18, 0x92, 0xd8, 0xc0, 0xb6, 0x1a, 0x03, 0x02, 0x00, 0x00, 0xff,
0xff, 0x24, 0x44, 0x00, 0xd7, 0x84, 0x00, 0x00, 0x00,
}
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