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grpc.go
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grpc.go
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package redrunner
import (
"crypto/tls"
"net"
"os"
"code.cloudfoundry.org/lager"
"github.com/tedsuo/ifrit"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
type GRPCRegisterFunc func(server *grpc.Server)
type grpcServer struct {
logger lager.Logger
listenAddr string
tlsConfig *tls.Config
registerFunc GRPCRegisterFunc
}
func NewGRPCServer(
logger lager.Logger,
listenAddr string,
tlsConfig *tls.Config,
registerFunc GRPCRegisterFunc,
) ifrit.Runner {
return &grpcServer{
logger: logger,
listenAddr: listenAddr,
tlsConfig: tlsConfig,
registerFunc: registerFunc,
}
}
func (s *grpcServer) Run(signals <-chan os.Signal, ready chan<- struct{}) error {
logger := s.logger.Session("grpc-server")
lis, err := net.Listen("tcp", s.listenAddr)
if err != nil {
return err
}
serverOption := grpc.Creds(credentials.NewTLS(s.tlsConfig))
grpcServer := grpc.NewServer(serverOption)
s.registerFunc(grpcServer)
errCh := make(chan error, 1)
go func() {
errCh <- grpcServer.Serve(lis)
}()
close(ready)
logger.Info("started")
select {
case err = <-errCh:
return err
case <-signals:
grpcServer.GracefulStop()
}
logger.Info("exiting")
return nil
}