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103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
// Copyright 2016 TiKV Project 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package member
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import (
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"strings"
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"time"
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"github.com/czs007/suvlim/master/election"
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"github.com/czs007/suvlim/pkg/pdpb"
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"github.com/czs007/suvlim/master/config"
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"go.etcd.io/etcd/clientv3"
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"go.etcd.io/etcd/embed"
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)
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const (
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// The timeout to wait transfer etcd leader to complete.
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moveLeaderTimeout = 5 * time.Second
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)
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// Member is used for the election related logic.
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type Member struct {
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// etcd and cluster information.
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leadership *election.Leadership
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etcd *embed.Etcd
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client *clientv3.Client
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id uint64 // etcd server id.
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member *pdpb.Member // current PD's info.
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// memberValue is the serialized string of `member`. It will be save in
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// etcd leader key when the PD node is successfully elected as the PD leader
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// of the cluster. Every write will use it to check PD leadership.
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memberValue string
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}
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// NewMember create a new Member.
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func NewMember(etcd *embed.Etcd, client *clientv3.Client, id uint64) *Member {
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return &Member{
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etcd: etcd,
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client: client,
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id: id,
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}
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}
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// ID returns the unique etcd ID for this server in etcd cluster.
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func (m *Member) ID() uint64 {
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return m.id
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}
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// MemberValue returns the member value.
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func (m *Member) MemberValue() string {
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return m.memberValue
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}
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// Member returns the member.
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func (m *Member) Member() *pdpb.Member {
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return m.member
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}
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// Etcd returns etcd related information.
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func (m *Member) Etcd() *embed.Etcd {
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return m.etcd
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}
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// GetEtcdLeader returns the etcd leader ID.
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func (m *Member) GetEtcdLeader() uint64 {
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return m.etcd.Server.Lead()
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}
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// GetLeadership returns the leadership of the PD member.
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func (m *Member) GetLeadership() *election.Leadership {
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return m.leadership
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}
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// MemberInfo initializes the member info.
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func (m *Member) MemberInfo(cfg *config.Config, name string) {
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leader := &pdpb.Member{
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Name: name,
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MemberId: m.ID(),
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ClientUrls: strings.Split(cfg.AdvertiseClientUrls, ","),
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PeerUrls: strings.Split(cfg.AdvertisePeerUrls, ","),
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}
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m.member = leader
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}
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// Close gracefully shuts down all servers/listeners.
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func (m *Member) Close() {
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m.Etcd().Close()
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}
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