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rpc.go
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rpc.go
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package main
import(
"net"
"errors"
"runtime"
"context"
"net/http"
"time"
"gogrpcgin/conf"
"gogrpcgin/utils"
"gogrpcgin/service"
"google.golang.org/grpc/reflection"
"google.golang.org/grpc"
"golang.org/x/net/trace"
)
// dev/pro
const Env = "dev"
// rpc run
func main() {
// init config
conf.InitConfig(Env,"rpc")
//new server engine
server := newServer()
// register service
service.ServiceReg(server)
// run
serviceRun(server)
}
// service run
func serviceRun(server *grpc.Server) {
address := conf.Conf.App.Rpc.RpcAddr
lis, err := net.Listen("tcp", address)
if err != nil {
utils.LogFatalfError(err)
}
utils.LogPrint("RPC server listen on %s\n", address)
// open trace
startTrace()
// 开启服务
reflection.Register(server)
if err := server.Serve(lis); err != nil {
utils.LogFatalfError(err)
}
}
// open trace
// like: http://localhost:50052/debug/requests
// like: http://localhost:50052/debug/events
func startTrace() {
grpc.EnableTracing = true
trace.AuthRequest = func(req *http.Request) (any, sensitive bool) {
return true, true
}
var traceAddr = conf.Conf.App.Rpc.RpcTraceAddr
utils.LogPrint("Trace listen on %s\n",traceAddr)
go http.ListenAndServe(traceAddr, nil)
}
// new server engine
func newServer() *grpc.Server{
return grpc.NewServer(grpc.UnaryInterceptor(composeUnaryServerInterceptors(serverRecoveryInterceptorHandle,
serverDurationInterceptorHandle)))
}
// server recovery interceptor handle
func serverRecoveryInterceptorHandle(ctx context.Context,req interface{},info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler)(interface{}, error) {
defer func() (err error){
if r := recover(); r != nil {
str, ok := r.(string)
if ok {
err = errors.New(str)
} else {
err = errors.New("panic!!!")
}
//打印堆栈
stack := make([]byte, 1024*8)
stack = stack[:runtime.Stack(stack, false)]
utils.LogPrint("[Recovery] panic recovered:\n\n%s\n\n%s" , r,stack)
}
return
}()
return handler(ctx, req)
}
// server duration interceptor handle
func serverDurationInterceptorHandle(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler) (interface{}, error) {
start := time.Now()
resp, err := handler(ctx, req)
utils.LogPrint("invoke server method=%s duration=%s error=%v", info.FullMethod, time.Since(start), err)
return resp, err
}
// multi interceptors
func composeUnaryServerInterceptors(interceptor, next grpc.UnaryServerInterceptor) grpc.UnaryServerInterceptor {
return func(
ctx context.Context,
req interface{},
info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler) (interface{}, error) {
return interceptor(ctx, req, info,
func(nextCtx context.Context, nextReq interface{}) (interface{}, error) {
return next(nextCtx, nextReq, info, handler)
})
}
}