/
grpc.go
126 lines (102 loc) · 3.16 KB
/
grpc.go
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package servers
import (
"fmt"
"net"
"go.uber.org/zap"
"google.golang.org/grpc"
_ "google.golang.org/grpc/encoding/gzip"
"google.golang.org/grpc/reflection"
)
const (
defaultServerName = "default server"
)
type GRPCServerConfig struct {
Port int64 `yaml:"port"`
EnableRecover bool `yaml:"enable_recover"` // TODO write recover and tls
EnableReflection bool `yaml:"enable_reflection"`
}
func (c *GRPCServerConfig) Validate() error {
return nil
}
type grpcServerOptions struct {
serverName string
serverOptions []grpc.ServerOption
unaryServerInterceptors []grpc.UnaryServerInterceptor
streamServerInterceptors []grpc.StreamServerInterceptor
//healthCheckHandler TODO
}
type GRPCServerOption func(serverOptions *grpcServerOptions)
func GRPCWithServerName(serverName string) GRPCServerOption {
return func(serverOptions *grpcServerOptions) {
serverOptions.serverName = serverName
}
}
func GRPCWithUnaryInterceptors(ins ...grpc.UnaryServerInterceptor) GRPCServerOption {
return func(serverOptions *grpcServerOptions) {
serverOptions.unaryServerInterceptors = ins
}
}
func GRPCWithStreamInterceptors(ins ...grpc.StreamServerInterceptor) GRPCServerOption {
return func(serverOptions *grpcServerOptions) {
serverOptions.streamServerInterceptors = ins
}
}
func GRPCWithServerOptions(opts ...grpc.ServerOption) GRPCServerOption {
return func(serverOptions *grpcServerOptions) {
serverOptions.serverOptions = opts
}
}
type GRPCServer struct {
Server *grpc.Server
logger *zap.Logger
serverName string
address string
}
func NewGRPCServer(cfg GRPCServerConfig, logger *zap.Logger, opts ...GRPCServerOption) *GRPCServer {
serverOptions := &grpcServerOptions{
serverName: defaultServerName,
serverOptions: nil,
unaryServerInterceptors: nil,
streamServerInterceptors: nil,
}
for _, opt := range opts {
opt(serverOptions)
}
grpcOptions := []grpc.ServerOption{
grpc.ChainUnaryInterceptor(serverOptions.unaryServerInterceptors...),
grpc.ChainStreamInterceptor(serverOptions.streamServerInterceptors...),
}
grpcOptions = append(grpcOptions, serverOptions.serverOptions...)
server := grpc.NewServer(grpcOptions...)
if cfg.EnableReflection {
reflection.Register(server)
}
return &GRPCServer{
Server: server,
logger: logger,
serverName: serverOptions.serverName,
address: fmt.Sprintf(":%d", cfg.Port),
}
}
func (s *GRPCServer) Run() error {
s.logger.Sugar().Infof("starting grpc server %s at %s", s.serverName, s.address)
l, err := net.Listen("tcp", s.address)
if err != nil {
return fmt.Errorf("cannot listen grpc server %s on %s: %w", s.serverName, s.address, err)
}
err = s.Server.Serve(l)
if err != nil {
return fmt.Errorf("serve grpc server %s on %s: %w", s.serverName, s.address, err)
}
return nil
}
func (s *GRPCServer) GracefullyStop() error {
s.logger.Sugar().Infof("gracefully stopping grpc server %s on: %s", s.serverName, s.address)
s.Server.GracefulStop()
return nil
}
func (s *GRPCServer) ForcefullyStop() error {
s.logger.Sugar().Infof("forcefully stopping grpc server %s on: %s", s.serverName, s.address)
s.Server.Stop()
return nil
}