forked from fullstorydev/grpcurl
/
testserver.go
177 lines (153 loc) · 4.9 KB
/
testserver.go
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// Command testserver spins up a test GRPC server.
package main
import (
"flag"
"fmt"
"net"
"os"
"sync/atomic"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/interop/grpc_testing"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/reflection"
"google.golang.org/grpc/status"
"github.com/fullstorydev/grpcurl"
grpcurl_testing "github.com/fullstorydev/grpcurl/testing"
)
var (
getUnixSocket func() string // nil when run on non-unix platforms
help = flag.Bool("help", false, "Print usage instructions and exit.")
cacert = flag.String("cacert", "",
`File containing trusted root certificates for verifying client certs. Ignored
if TLS is not in use (e.g. no -cert or -key specified).`)
cert = flag.String("cert", "",
`File containing server certificate (public key). Must also provide -key option.
Server uses plain-text if no -cert and -key options are given.`)
key = flag.String("key", "",
`File containing server private key. Must also provide -cert option. Server uses
plain-text if no -cert and -key options are given.`)
requirecert = flag.Bool("requirecert", false,
`Require clients to authenticate via client certs. Must be using TLS (e.g. must
also provide -cert and -key options).`)
port = flag.Int("p", 0, "Port on which to listen. Ephemeral port used if not specified.")
noreflect = flag.Bool("noreflect", false, "Indicates that server should not support server reflection.")
quiet = flag.Bool("q", false, "Suppresses server request and stream logging.")
)
func main() {
flag.Parse()
if *help {
flag.PrintDefaults()
os.Exit(0)
}
grpclog.SetLoggerV2(grpclog.NewLoggerV2(os.Stdout, os.Stdout, os.Stderr))
if len(flag.Args()) > 0 {
fmt.Fprintln(os.Stderr, "No arguments expected.")
os.Exit(2)
}
if (*cert == "") != (*key == "") {
fmt.Fprintln(os.Stderr, "The -cert and -key arguments must be used together and both be present.")
os.Exit(2)
}
if *requirecert && *cert == "" {
fmt.Fprintln(os.Stderr, "The -requirecert arg cannot be used without -cert and -key arguments.")
os.Exit(2)
}
var opts []grpc.ServerOption
if *cert != "" {
creds, err := grpcurl.ServerTransportCredentials(*cacert, *cert, *key, *requirecert)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to configure transport credentials: %v\n", err)
os.Exit(1)
}
opts = []grpc.ServerOption{grpc.Creds(creds)}
}
if !*quiet {
opts = append(opts, grpc.UnaryInterceptor(unaryLogger), grpc.StreamInterceptor(streamLogger))
}
var network, addr string
if getUnixSocket != nil && getUnixSocket() != "" {
network = "unix"
addr = getUnixSocket()
} else {
network = "tcp"
addr = fmt.Sprintf("127.0.0.1:%d", *port)
}
l, err := net.Listen(network, addr)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to listen on socket: %v\n", err)
os.Exit(1)
}
fmt.Printf("Listening on %v\n", l.Addr())
svr := grpc.NewServer(opts...)
grpc_testing.RegisterTestServiceServer(svr, grpcurl_testing.TestServer{})
if !*noreflect {
reflection.Register(svr)
}
if err := svr.Serve(l); err != nil {
fmt.Fprintf(os.Stderr, "GRPC server returned error: %v\n", err)
os.Exit(1)
}
}
var id int32
func unaryLogger(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
i := atomic.AddInt32(&id, 1) - 1
grpclog.Infof("start <%d>: %s\n", i, info.FullMethod)
start := time.Now()
rsp, err := handler(ctx, req)
var code codes.Code
if stat, ok := status.FromError(err); ok {
code = stat.Code()
} else {
code = codes.Unknown
}
grpclog.Infof("completed <%d>: %v (%d) %v\n", i, code, code, time.Now().Sub(start))
return rsp, err
}
func streamLogger(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
i := atomic.AddInt32(&id, 1) - 1
start := time.Now()
grpclog.Infof("start <%d>: %s\n", i, info.FullMethod)
err := handler(srv, loggingStream{ss: ss, id: i})
var code codes.Code
if stat, ok := status.FromError(err); ok {
code = stat.Code()
} else {
code = codes.Unknown
}
grpclog.Infof("completed <%d>: %v(%d) %v\n", i, code, code, time.Now().Sub(start))
return err
}
type loggingStream struct {
ss grpc.ServerStream
id int32
}
func (l loggingStream) SetHeader(md metadata.MD) error {
return l.ss.SetHeader(md)
}
func (l loggingStream) SendHeader(md metadata.MD) error {
return l.ss.SendHeader(md)
}
func (l loggingStream) SetTrailer(md metadata.MD) {
l.ss.SetTrailer(md)
}
func (l loggingStream) Context() context.Context {
return l.ss.Context()
}
func (l loggingStream) SendMsg(m interface{}) error {
err := l.ss.SendMsg(m)
if err == nil {
grpclog.Infof("stream <%d>: sent message\n", l.id)
}
return err
}
func (l loggingStream) RecvMsg(m interface{}) error {
err := l.ss.RecvMsg(m)
if err == nil {
grpclog.Infof("stream <%d>: received message\n", l.id)
}
return err
}