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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 (
"context"
"time"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/api/v3/v3rpc/rpctypes"
"go.etcd.io/etcd/client/pkg/v3/types"
"go.etcd.io/etcd/server/v3/etcdserver"
"go.etcd.io/etcd/server/v3/etcdserver/api"
"go.etcd.io/etcd/server/v3/etcdserver/api/membership"
)
type ClusterServer struct {
cluster api.Cluster
server *etcdserver.EtcdServer
}
func NewClusterServer(s *etcdserver.EtcdServer) *ClusterServer {
return &ClusterServer{
cluster: s.Cluster(),
server: s,
}
}
func (cs *ClusterServer) MemberAdd(ctx context.Context, r *pb.MemberAddRequest) (*pb.MemberAddResponse, error) {
urls, err := types.NewURLs(r.PeerURLs)
if err != nil {
return nil, rpctypes.ErrGRPCMemberBadURLs
}
now := time.Now()
var m *membership.Member
if r.IsLearner {
m = membership.NewMemberAsLearner("", urls, "", &now)
} else {
m = membership.NewMember("", urls, "", &now)
}
membs, merr := cs.server.AddMember(ctx, *m)
if merr != nil {
return nil, togRPCError(merr)
}
return &pb.MemberAddResponse{
Header: cs.header(),
Member: &pb.Member{
ID: uint64(m.ID),
PeerURLs: m.PeerURLs,
IsLearner: m.IsLearner,
},
Members: membersToProtoMembers(membs),
}, nil
}
func (cs *ClusterServer) MemberRemove(ctx context.Context, r *pb.MemberRemoveRequest) (*pb.MemberRemoveResponse, error) {
membs, err := cs.server.RemoveMember(ctx, r.ID)
if err != nil {
return nil, togRPCError(err)
}
return &pb.MemberRemoveResponse{Header: cs.header(), Members: membersToProtoMembers(membs)}, nil
}
func (cs *ClusterServer) MemberUpdate(ctx context.Context, r *pb.MemberUpdateRequest) (*pb.MemberUpdateResponse, error) {
m := membership.Member{
ID: types.ID(r.ID),
RaftAttributes: membership.RaftAttributes{PeerURLs: r.PeerURLs},
}
membs, err := cs.server.UpdateMember(ctx, m)
if err != nil {
return nil, togRPCError(err)
}
return &pb.MemberUpdateResponse{Header: cs.header(), Members: membersToProtoMembers(membs)}, nil
}
func (cs *ClusterServer) MemberList(ctx context.Context, r *pb.MemberListRequest) (*pb.MemberListResponse, error) {
if r.Linearizable {
if err := cs.server.LinearizableReadNotify(ctx); err != nil {
return nil, togRPCError(err)
}
}
membs := membersToProtoMembers(cs.cluster.Members())
return &pb.MemberListResponse{Header: cs.header(), Members: membs}, nil
}
func (cs *ClusterServer) MemberPromote(ctx context.Context, r *pb.MemberPromoteRequest) (*pb.MemberPromoteResponse, error) {
membs, err := cs.server.PromoteMember(ctx, r.ID)
if err != nil {
return nil, togRPCError(err)
}
return &pb.MemberPromoteResponse{Header: cs.header(), Members: membersToProtoMembers(membs)}, nil
}
func (cs *ClusterServer) header() *pb.ResponseHeader {
return &pb.ResponseHeader{ClusterId: uint64(cs.cluster.ID()), MemberId: uint64(cs.server.ID()), RaftTerm: cs.server.Term()}
}
func membersToProtoMembers(membs []*membership.Member) []*pb.Member {
protoMembs := make([]*pb.Member, len(membs))
for i := range membs {
protoMembs[i] = &pb.Member{
Name: membs[i].Name,
ID: uint64(membs[i].ID),
PeerURLs: membs[i].PeerURLs,
ClientURLs: membs[i].ClientURLs,
IsLearner: membs[i].IsLearner,
}
}
return protoMembs
}
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