mirror of https://github.com/k3s-io/k3s
142 lines
4.3 KiB
Go
142 lines
4.3 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package clientv3
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import (
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"context"
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pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
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"go.etcd.io/etcd/pkg/types"
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"google.golang.org/grpc"
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)
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type (
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Member pb.Member
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MemberListResponse pb.MemberListResponse
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MemberAddResponse pb.MemberAddResponse
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MemberRemoveResponse pb.MemberRemoveResponse
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MemberUpdateResponse pb.MemberUpdateResponse
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MemberPromoteResponse pb.MemberPromoteResponse
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)
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type Cluster interface {
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// MemberList lists the current cluster membership.
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MemberList(ctx context.Context) (*MemberListResponse, error)
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// MemberAdd adds a new member into the cluster.
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MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error)
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// MemberAddAsLearner adds a new learner member into the cluster.
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MemberAddAsLearner(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error)
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// MemberRemove removes an existing member from the cluster.
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MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error)
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// MemberUpdate updates the peer addresses of the member.
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MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error)
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// MemberPromote promotes a member from raft learner (non-voting) to raft voting member.
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MemberPromote(ctx context.Context, id uint64) (*MemberPromoteResponse, error)
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}
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type cluster struct {
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remote pb.ClusterClient
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callOpts []grpc.CallOption
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}
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func NewCluster(c *Client) Cluster {
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api := &cluster{remote: RetryClusterClient(c)}
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if c != nil {
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api.callOpts = c.callOpts
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}
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return api
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}
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func NewClusterFromClusterClient(remote pb.ClusterClient, c *Client) Cluster {
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api := &cluster{remote: remote}
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if c != nil {
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api.callOpts = c.callOpts
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}
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return api
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}
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func (c *cluster) MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error) {
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return c.memberAdd(ctx, peerAddrs, false)
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}
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func (c *cluster) MemberAddAsLearner(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error) {
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return c.memberAdd(ctx, peerAddrs, true)
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}
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func (c *cluster) memberAdd(ctx context.Context, peerAddrs []string, isLearner bool) (*MemberAddResponse, error) {
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// fail-fast before panic in rafthttp
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if _, err := types.NewURLs(peerAddrs); err != nil {
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return nil, err
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}
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r := &pb.MemberAddRequest{
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PeerURLs: peerAddrs,
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IsLearner: isLearner,
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}
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resp, err := c.remote.MemberAdd(ctx, r, c.callOpts...)
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if err != nil {
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return nil, toErr(ctx, err)
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}
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return (*MemberAddResponse)(resp), nil
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}
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func (c *cluster) MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error) {
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r := &pb.MemberRemoveRequest{ID: id}
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resp, err := c.remote.MemberRemove(ctx, r, c.callOpts...)
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if err != nil {
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return nil, toErr(ctx, err)
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}
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return (*MemberRemoveResponse)(resp), nil
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}
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func (c *cluster) MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error) {
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// fail-fast before panic in rafthttp
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if _, err := types.NewURLs(peerAddrs); err != nil {
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return nil, err
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}
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// it is safe to retry on update.
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r := &pb.MemberUpdateRequest{ID: id, PeerURLs: peerAddrs}
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resp, err := c.remote.MemberUpdate(ctx, r, c.callOpts...)
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if err == nil {
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return (*MemberUpdateResponse)(resp), nil
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}
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return nil, toErr(ctx, err)
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}
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func (c *cluster) MemberList(ctx context.Context) (*MemberListResponse, error) {
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// it is safe to retry on list.
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resp, err := c.remote.MemberList(ctx, &pb.MemberListRequest{}, c.callOpts...)
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if err == nil {
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return (*MemberListResponse)(resp), nil
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}
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return nil, toErr(ctx, err)
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}
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func (c *cluster) MemberPromote(ctx context.Context, id uint64) (*MemberPromoteResponse, error) {
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r := &pb.MemberPromoteRequest{ID: id}
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resp, err := c.remote.MemberPromote(ctx, r, c.callOpts...)
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if err != nil {
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return nil, toErr(ctx, err)
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}
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return (*MemberPromoteResponse)(resp), nil
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}
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