| 143 | } |
| 144 | |
| 145 | func (s *Topom) GroupDelServer(gid int, addr string) error { |
| 146 | s.mu.Lock() |
| 147 | defer s.mu.Unlock() |
| 148 | ctx, err := s.newContext() |
| 149 | if err != nil { |
| 150 | return err |
| 151 | } |
| 152 | |
| 153 | g, err := ctx.getGroup(gid) |
| 154 | if err != nil { |
| 155 | return err |
| 156 | } |
| 157 | index, err := ctx.getGroupIndex(g, addr) |
| 158 | if err != nil { |
| 159 | return err |
| 160 | } |
| 161 | |
| 162 | if g.Promoting.State != models.ActionNothing { |
| 163 | return errors.Errorf("group-[%d] is promoting", g.Id) |
| 164 | } |
| 165 | |
| 166 | if index == 0 { |
| 167 | if len(g.Servers) != 1 || ctx.isGroupInUse(g.Id) { |
| 168 | return errors.Errorf("group-[%d] can't remove master, still in use", g.Id) |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | if p := ctx.sentinel; len(p.Servers) != 0 { |
| 173 | defer s.dirtySentinelCache() |
| 174 | p.OutOfSync = true |
| 175 | if err := s.storeUpdateSentinel(p); err != nil { |
| 176 | return err |
| 177 | } |
| 178 | } |
| 179 | defer s.dirtyGroupCache(g.Id) |
| 180 | |
| 181 | if index != 0 && g.Servers[index].ReplicaGroup { |
| 182 | g.OutOfSync = true |
| 183 | } |
| 184 | |
| 185 | var slice = make([]*models.GroupServer, 0, len(g.Servers)) |
| 186 | for i, x := range g.Servers { |
| 187 | if i != index { |
| 188 | slice = append(slice, x) |
| 189 | } |
| 190 | } |
| 191 | if len(slice) == 0 { |
| 192 | g.OutOfSync = false |
| 193 | } |
| 194 | |
| 195 | g.Servers = slice |
| 196 | |
| 197 | return s.storeUpdateGroup(g) |
| 198 | } |
| 199 | |
| 200 | func (s *Topom) GroupPromoteServer(gid int, addr string) error { |
| 201 | s.mu.Lock() |