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node.go
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node.go
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/*
* lvcl is a simple program clustering libvirt servers
* Copyright (C) 2020 Adam Prycki (email: [email protected])
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package main
import "fmt"
const(
NodeStateNil=iota
NodeEvacuate
NodeMaintenance
NodeOffline
NodeOnline
NodeNotReady
)
type Node struct{
Hostname string
NodeAddress string
LibvirtAddress string
State int //{ NodeStateNil, NodeEvacuate }
NodeStateString string //{ NodeStateNil, NodeEvacuate }
Weight uint
HwStats []Cluster_utilization
Usage []Cluster_utilization `json:"-"`
}
type NodeStats struct{
totalCores uint64
totalMem uint64
cpuKernel uint64
cpuUser uint64
cpuIdle uint64
cpuIo uint64
memTotal uint64
memFree uint64
memBuffers uint64
memCached uint64
}
func (n Node)GetNodeStateString() string {
switch n.State {
case NodeStateNil:
return "NodeStateNil"
case NodeEvacuate:
return "NodeEvacuate"
case NodeMaintenance:
return "NodeMaintenance"
case NodeOffline:
return "NodeOffline"
case NodeOnline:
return "NodeOnline"
case NodeNotReady:
return "NodeNotReady"
default:
return "Node.GetNodeStateString() ERROR"}}
func (n *Node)fixNodeLoadedFromConfig(){
if n.State == NodeEvacuate || n.NodeStateString == "NodeEvacuate" {
n.State = NodeEvacuate
n.NodeStateString = "NodeEvacuate"
return}
if n.State == NodeMaintenance || n.NodeStateString == "NodeMaintenance" {
n.State = NodeMaintenance
n.NodeStateString = "NodeMaintenance"
return}
n.State = NodeStateNil
n.NodeStateString = "NodeStateNil"
return}
func (n *Node)fixNodeStateString(){
n.NodeStateString = n.GetNodeStateString()}
func (p *Node)dump(){
fmt.Printf("\n dumping Node %+v \nEND\n", *p)}
func (n Node)IsNodeReadyForResources() bool {
switch n.State {
case NodeOnline:
return true
default:
return false
}
}
func (n Node)CanSchedulerTouchResourceOnTheNode() bool {
switch n.State {
case NodeMaintenance:
return false
case NodeOffline:
return false
case NodeNotReady:
return false
default:
return true
}
}