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// Copyright 2017 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 v2v3
import (
"context"
"net/http"
"time"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/client/pkg/v3/types"
"go.etcd.io/etcd/client/v3"
"go.etcd.io/etcd/server/v3/etcdserver"
"go.etcd.io/etcd/server/v3/etcdserver/api"
"go.etcd.io/etcd/server/v3/etcdserver/api/membership"
"github.com/coreos/go-semver/semver"
"go.uber.org/zap"
)
type fakeStats struct{}
func (s *fakeStats) SelfStats() []byte { return nil }
func (s *fakeStats) LeaderStats() []byte { return nil }
func (s *fakeStats) StoreStats() []byte { return nil }
type v2v3Server struct {
lg *zap.Logger
c *clientv3.Client
store *v2v3Store
fakeStats
}
func NewServer(lg *zap.Logger, c *clientv3.Client, pfx string) etcdserver.ServerPeer {
return &v2v3Server{lg: lg, c: c, store: newStore(c, pfx)}
}
func (s *v2v3Server) ClientCertAuthEnabled() bool { return false }
func (s *v2v3Server) LeaseHandler() http.Handler { panic("STUB: lease handler") }
func (s *v2v3Server) RaftHandler() http.Handler { panic("STUB: raft handler") }
func (s *v2v3Server) Leader() types.ID {
ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
defer cancel()
resp, err := s.c.Status(ctx, s.c.Endpoints()[0])
if err != nil {
return 0
}
return types.ID(resp.Leader)
}
func (s *v2v3Server) AddMember(ctx context.Context, memb membership.Member) ([]*membership.Member, error) {
// adding member as learner is not supported by V2 Server.
resp, err := s.c.MemberAdd(ctx, memb.PeerURLs)
if err != nil {
return nil, err
}
return v3MembersToMembership(resp.Members), nil
}
func (s *v2v3Server) RemoveMember(ctx context.Context, id uint64) ([]*membership.Member, error) {
resp, err := s.c.MemberRemove(ctx, id)
if err != nil {
return nil, err
}
return v3MembersToMembership(resp.Members), nil
}
func (s *v2v3Server) PromoteMember(ctx context.Context, id uint64) ([]*membership.Member, error) {
resp, err := s.c.MemberPromote(ctx, id)
if err != nil {
return nil, err
}
return v3MembersToMembership(resp.Members), nil
}
func (s *v2v3Server) UpdateMember(ctx context.Context, m membership.Member) ([]*membership.Member, error) {
resp, err := s.c.MemberUpdate(ctx, uint64(m.ID), m.PeerURLs)
if err != nil {
return nil, err
}
return v3MembersToMembership(resp.Members), nil
}
func v3MembersToMembership(v3membs []*pb.Member) []*membership.Member {
membs := make([]*membership.Member, len(v3membs))
for i, m := range v3membs {
membs[i] = &membership.Member{
ID: types.ID(m.ID),
RaftAttributes: membership.RaftAttributes{
PeerURLs: m.PeerURLs,
IsLearner: m.IsLearner,
},
Attributes: membership.Attributes{
Name: m.Name,
ClientURLs: m.ClientURLs,
},
}
}
return membs
}
func (s *v2v3Server) ClusterVersion() *semver.Version { return s.Version() }
func (s *v2v3Server) Cluster() api.Cluster { return s }
func (s *v2v3Server) Alarms() []*pb.AlarmMember { return nil }
func (s *v2v3Server) LeaderChangedNotify() <-chan struct{} { return nil }
func (s *v2v3Server) Do(ctx context.Context, r pb.Request) (etcdserver.Response, error) {
applier := etcdserver.NewApplierV2(s.lg, s.store, nil)
reqHandler := etcdserver.NewStoreRequestV2Handler(s.store, applier)
req := (*etcdserver.RequestV2)(&r)
resp, err := req.Handle(ctx, reqHandler)
if resp.Err != nil {
return resp, resp.Err
}
return resp, err
}
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