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grpc-ui
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client-server pair done

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master
Jordan Orelli 8 years ago
parent adaf7b2454
commit 6de3f3ed55
4 changed files with 280 additions and 2 deletions
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74
cmd/count-client/main.go
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@ -2,13 +2,83 @@ package main
import (
"fmt"
"flag"
"time"
"log"
"os"
"context"
"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() {
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.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)
}

37
cmd/count-server/main.go
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@ -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)
}

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

158
lib/count/count.pb.go
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@ -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
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xe2, 0x4e, 0xce, 0x2f, 0xcd,
0x2b, 0xd1, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x57, 0x52, 0xe4, 0xe2, 0xf6, 0x4b, 0xad, 0x28, 0x09,
0x4a, 0x2d, 0x2c, 0x4d, 0x2d, 0x2e, 0x11, 0x12, 0xe2, 0x62, 0xc9, 0x4b, 0xcc, 0x4d, 0x95, 0x60,
0x54, 0x60, 0xd4, 0xe0, 0x0c, 0x02, 0xb3, 0x95, 0x64, 0xb9, 0x38, 0x21, 0x4a, 0x0a, 0x72, 0x2a,
0x85, 0x04, 0xb8, 0x98, 0xcb, 0x12, 0x73, 0xc0, 0xf2, 0xcc, 0x41, 0x20, 0xa6, 0x91, 0x36, 0x17,
0xab, 0x33, 0xc8, 0x40, 0x21, 0x25, 0x2e, 0x16, 0x90, 0x3a, 0x21, 0x1e, 0x3d, 0x24, 0x13, 0xa5,
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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