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// Copyright 2016 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v3rpc
import (
"crypto/tls"
"math"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/client/v3/credentials"
"go.etcd.io/etcd/server/v3/etcdserver"
grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
"google.golang.org/grpc"
"google.golang.org/grpc/health"
healthpb "google.golang.org/grpc/health/grpc_health_v1"
)
const (
grpcOverheadBytes = 512 * 1024
maxSendBytes = math.MaxInt32
)
func Server(s *etcdserver.EtcdServer, tls *tls.Config, interceptor grpc.UnaryServerInterceptor, gopts ...grpc.ServerOption) *grpc.Server {
var opts []grpc.ServerOption
opts = append(opts, grpc.CustomCodec(&codec{}))
if tls != nil {
bundle := credentials.NewBundle(credentials.Config{TLSConfig: tls})
opts = append(opts, grpc.Creds(bundle.TransportCredentials()))
}
chainUnaryInterceptors := []grpc.UnaryServerInterceptor{
newLogUnaryInterceptor(s),
newUnaryInterceptor(s),
grpc_prometheus.UnaryServerInterceptor,
}
if interceptor != nil {
chainUnaryInterceptors = append(chainUnaryInterceptors, interceptor)
}
chainStreamInterceptors := []grpc.StreamServerInterceptor{
newStreamInterceptor(s),
grpc_prometheus.StreamServerInterceptor,
}
if s.Cfg.ExperimentalEnableDistributedTracing {
chainUnaryInterceptors = append(chainUnaryInterceptors, otelgrpc.UnaryServerInterceptor(s.Cfg.ExperimentalTracerOptions...))
chainStreamInterceptors = append(chainStreamInterceptors, otelgrpc.StreamServerInterceptor(s.Cfg.ExperimentalTracerOptions...))
}
opts = append(opts, grpc.ChainUnaryInterceptor(chainUnaryInterceptors...))
opts = append(opts, grpc.ChainStreamInterceptor(chainStreamInterceptors...))
opts = append(opts, grpc.MaxRecvMsgSize(int(s.Cfg.MaxRequestBytes+grpcOverheadBytes)))
opts = append(opts, grpc.MaxSendMsgSize(maxSendBytes))
opts = append(opts, grpc.MaxConcurrentStreams(s.Cfg.MaxConcurrentStreams))
grpcServer := grpc.NewServer(append(opts, gopts...)...)
pb.RegisterKVServer(grpcServer, NewQuotaKVServer(s))
pb.RegisterWatchServer(grpcServer, NewWatchServer(s))
pb.RegisterLeaseServer(grpcServer, NewQuotaLeaseServer(s))
pb.RegisterClusterServer(grpcServer, NewClusterServer(s))
pb.RegisterAuthServer(grpcServer, NewAuthServer(s))
hsrv := health.NewServer()
healthNotifier := newHealthNotifier(hsrv, s)
pb.RegisterMaintenanceServer(grpcServer, NewMaintenanceServer(s, healthNotifier))
healthpb.RegisterHealthServer(grpcServer, hsrv)
// set zero values for metrics registered for this grpc server
grpc_prometheus.Register(grpcServer)
return grpcServer
}
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