dex/vendor/google.golang.org/grpc/benchmark/worker/main.go

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2016-10-04 12:58:50 +05:30
/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package main
import (
"flag"
"fmt"
"io"
"net"
"runtime"
"strconv"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc"
testpb "google.golang.org/grpc/benchmark/grpc_testing"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
)
var (
driverPort = flag.Int("driver_port", 10000, "port for communication with driver")
serverPort = flag.Int("server_port", 0, "port for benchmark server if not specified by server config message")
)
type byteBufCodec struct {
}
func (byteBufCodec) Marshal(v interface{}) ([]byte, error) {
b, ok := v.(*[]byte)
if !ok {
return nil, fmt.Errorf("failed to marshal: %v is not type of *[]byte", v)
}
return *b, nil
}
func (byteBufCodec) Unmarshal(data []byte, v interface{}) error {
b, ok := v.(*[]byte)
if !ok {
return fmt.Errorf("failed to marshal: %v is not type of *[]byte", v)
}
*b = data
return nil
}
func (byteBufCodec) String() string {
return "bytebuffer"
}
// workerServer implements WorkerService rpc handlers.
// It can create benchmarkServer or benchmarkClient on demand.
type workerServer struct {
stop chan<- bool
serverPort int
}
func (s *workerServer) RunServer(stream testpb.WorkerService_RunServerServer) error {
var bs *benchmarkServer
defer func() {
// Close benchmark server when stream ends.
grpclog.Printf("closing benchmark server")
if bs != nil {
bs.closeFunc()
}
}()
for {
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
var out *testpb.ServerStatus
switch argtype := in.Argtype.(type) {
case *testpb.ServerArgs_Setup:
grpclog.Printf("server setup received:")
if bs != nil {
grpclog.Printf("server setup received when server already exists, closing the existing server")
bs.closeFunc()
}
bs, err = startBenchmarkServer(argtype.Setup, s.serverPort)
if err != nil {
return err
}
out = &testpb.ServerStatus{
Stats: bs.getStats(false),
Port: int32(bs.port),
Cores: int32(bs.cores),
}
case *testpb.ServerArgs_Mark:
grpclog.Printf("server mark received:")
grpclog.Printf(" - %v", argtype)
if bs == nil {
return grpc.Errorf(codes.InvalidArgument, "server does not exist when mark received")
}
out = &testpb.ServerStatus{
Stats: bs.getStats(argtype.Mark.Reset_),
Port: int32(bs.port),
Cores: int32(bs.cores),
}
}
if err := stream.Send(out); err != nil {
return err
}
}
}
func (s *workerServer) RunClient(stream testpb.WorkerService_RunClientServer) error {
var bc *benchmarkClient
defer func() {
// Shut down benchmark client when stream ends.
grpclog.Printf("shuting down benchmark client")
if bc != nil {
bc.shutdown()
}
}()
for {
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
var out *testpb.ClientStatus
switch t := in.Argtype.(type) {
case *testpb.ClientArgs_Setup:
grpclog.Printf("client setup received:")
if bc != nil {
grpclog.Printf("client setup received when client already exists, shuting down the existing client")
bc.shutdown()
}
bc, err = startBenchmarkClient(t.Setup)
if err != nil {
return err
}
out = &testpb.ClientStatus{
Stats: bc.getStats(false),
}
case *testpb.ClientArgs_Mark:
grpclog.Printf("client mark received:")
grpclog.Printf(" - %v", t)
if bc == nil {
return grpc.Errorf(codes.InvalidArgument, "client does not exist when mark received")
}
out = &testpb.ClientStatus{
Stats: bc.getStats(t.Mark.Reset_),
}
}
if err := stream.Send(out); err != nil {
return err
}
}
}
func (s *workerServer) CoreCount(ctx context.Context, in *testpb.CoreRequest) (*testpb.CoreResponse, error) {
grpclog.Printf("core count: %v", runtime.NumCPU())
return &testpb.CoreResponse{Cores: int32(runtime.NumCPU())}, nil
}
func (s *workerServer) QuitWorker(ctx context.Context, in *testpb.Void) (*testpb.Void, error) {
grpclog.Printf("quiting worker")
s.stop <- true
return &testpb.Void{}, nil
}
func main() {
grpc.EnableTracing = false
flag.Parse()
lis, err := net.Listen("tcp", ":"+strconv.Itoa(*driverPort))
if err != nil {
grpclog.Fatalf("failed to listen: %v", err)
}
grpclog.Printf("worker listening at port %v", *driverPort)
s := grpc.NewServer()
stop := make(chan bool)
testpb.RegisterWorkerServiceServer(s, &workerServer{
stop: stop,
serverPort: *serverPort,
})
go func() {
<-stop
// Wait for 1 second before stopping the server to make sure the return value of QuitWorker is sent to client.
// TODO revise this once server graceful stop is supported in gRPC.
time.Sleep(time.Second)
s.Stop()
}()
s.Serve(lis)
}