// rebuild tasks from zk
func (m *MigrateManager) RebuildTasks(migrateMetas []*meta.MigrateMeta, cluster *topo.Cluster) {
if migrateMetas != nil {
for _, mm := range migrateMetas {
task, err := m.CreateTask(mm.SourceId, mm.TargetId, mm.Ranges, cluster)
if err == nil {
log.Info(task.TaskName(), "Load task from zk")
} else {
log.Warning(task.TaskName(), "CreateTask failed, %v", err)
}
}
}
}
return false
}
}
}
log.Info(getNodeState(i).Addr(), "Can failover slave")
return true
}
MasterAutoFailoverConstraint = func(i interface{}) bool {
ctx := i.(StateContext)
cs := ctx.ClusterState
ns := ctx.NodeState
// 如果AutoFailover没开，且不是执行Failover的信号
if !meta.AutoFailover() && ctx.Input.Command != CMD_FAILOVER_BEGIN_SIGNAL {
log.Warning(ns.Addr(), "Check constraint failed, autofailover off or no FL begin signal")
return false
}
rs := cs.FindReplicaSetByNode(ns.Id())
if rs == nil {
log.Warning(ns.Addr(), "Check constraint failed, can not find replicaset by the failure node")
return false
}
// Region至少还有一个节点
localRegionNodes := rs.RegionNodes(ns.node.Region)
if len(localRegionNodes) < 2 {
log.Warningf(ns.Addr(), "Check constraint failed, %s region nodes %d < 2\n",
ns.node.Region, len(localRegionNodes))
return false
}