142 lines
4.3 KiB
Go
142 lines
4.3 KiB
Go
// 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 clientv3
|
|
|
|
import (
|
|
"context"
|
|
|
|
pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
|
|
"go.etcd.io/etcd/pkg/types"
|
|
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
type (
|
|
Member pb.Member
|
|
MemberListResponse pb.MemberListResponse
|
|
MemberAddResponse pb.MemberAddResponse
|
|
MemberRemoveResponse pb.MemberRemoveResponse
|
|
MemberUpdateResponse pb.MemberUpdateResponse
|
|
MemberPromoteResponse pb.MemberPromoteResponse
|
|
)
|
|
|
|
type Cluster interface {
|
|
// MemberList lists the current cluster membership.
|
|
MemberList(ctx context.Context) (*MemberListResponse, error)
|
|
|
|
// MemberAdd adds a new member into the cluster.
|
|
MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error)
|
|
|
|
// MemberAddAsLearner adds a new learner member into the cluster.
|
|
MemberAddAsLearner(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error)
|
|
|
|
// MemberRemove removes an existing member from the cluster.
|
|
MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error)
|
|
|
|
// MemberUpdate updates the peer addresses of the member.
|
|
MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error)
|
|
|
|
// MemberPromote promotes a member from raft learner (non-voting) to raft voting member.
|
|
MemberPromote(ctx context.Context, id uint64) (*MemberPromoteResponse, error)
|
|
}
|
|
|
|
type cluster struct {
|
|
remote pb.ClusterClient
|
|
callOpts []grpc.CallOption
|
|
}
|
|
|
|
func NewCluster(c *Client) Cluster {
|
|
api := &cluster{remote: RetryClusterClient(c)}
|
|
if c != nil {
|
|
api.callOpts = c.callOpts
|
|
}
|
|
return api
|
|
}
|
|
|
|
func NewClusterFromClusterClient(remote pb.ClusterClient, c *Client) Cluster {
|
|
api := &cluster{remote: remote}
|
|
if c != nil {
|
|
api.callOpts = c.callOpts
|
|
}
|
|
return api
|
|
}
|
|
|
|
func (c *cluster) MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error) {
|
|
return c.memberAdd(ctx, peerAddrs, false)
|
|
}
|
|
|
|
func (c *cluster) MemberAddAsLearner(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error) {
|
|
return c.memberAdd(ctx, peerAddrs, true)
|
|
}
|
|
|
|
func (c *cluster) memberAdd(ctx context.Context, peerAddrs []string, isLearner bool) (*MemberAddResponse, error) {
|
|
// fail-fast before panic in rafthttp
|
|
if _, err := types.NewURLs(peerAddrs); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
r := &pb.MemberAddRequest{
|
|
PeerURLs: peerAddrs,
|
|
IsLearner: isLearner,
|
|
}
|
|
resp, err := c.remote.MemberAdd(ctx, r, c.callOpts...)
|
|
if err != nil {
|
|
return nil, toErr(ctx, err)
|
|
}
|
|
return (*MemberAddResponse)(resp), nil
|
|
}
|
|
|
|
func (c *cluster) MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error) {
|
|
r := &pb.MemberRemoveRequest{ID: id}
|
|
resp, err := c.remote.MemberRemove(ctx, r, c.callOpts...)
|
|
if err != nil {
|
|
return nil, toErr(ctx, err)
|
|
}
|
|
return (*MemberRemoveResponse)(resp), nil
|
|
}
|
|
|
|
func (c *cluster) MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error) {
|
|
// fail-fast before panic in rafthttp
|
|
if _, err := types.NewURLs(peerAddrs); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// it is safe to retry on update.
|
|
r := &pb.MemberUpdateRequest{ID: id, PeerURLs: peerAddrs}
|
|
resp, err := c.remote.MemberUpdate(ctx, r, c.callOpts...)
|
|
if err == nil {
|
|
return (*MemberUpdateResponse)(resp), nil
|
|
}
|
|
return nil, toErr(ctx, err)
|
|
}
|
|
|
|
func (c *cluster) MemberList(ctx context.Context) (*MemberListResponse, error) {
|
|
// it is safe to retry on list.
|
|
resp, err := c.remote.MemberList(ctx, &pb.MemberListRequest{}, c.callOpts...)
|
|
if err == nil {
|
|
return (*MemberListResponse)(resp), nil
|
|
}
|
|
return nil, toErr(ctx, err)
|
|
}
|
|
|
|
func (c *cluster) MemberPromote(ctx context.Context, id uint64) (*MemberPromoteResponse, error) {
|
|
r := &pb.MemberPromoteRequest{ID: id}
|
|
resp, err := c.remote.MemberPromote(ctx, r, c.callOpts...)
|
|
if err != nil {
|
|
return nil, toErr(ctx, err)
|
|
}
|
|
return (*MemberPromoteResponse)(resp), nil
|
|
}
|