本文整理汇总了Golang中dmzhang/catkeeper/libvirt.VirConnection.IsAlive方法的典型用法代码示例。如果您正苦于以下问题：Golang VirConnection.IsAlive方法的具体用法？Golang VirConnection.IsAlive怎么用？Golang VirConnection.IsAlive使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类dmzhang/catkeeper/libvirt.VirConnection的用法示例。
在下文中一共展示了VirConnection.IsAlive方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: readLibvirtVM
func readLibvirtVM(HostIpAddress string, UUIDString string) (VirtualMachine, error) {
var conn libvirt.VirConnection
var err error
ok := ipaddressConnectionCache.Check(HostIpAddress)
if ok == false {
conn, err = libvirt.NewVirConnection("qemu+ssh://[email protected]" + HostIpAddress + "/system")
if err != nil {
return VirtualMachine{}, err
}
ipaddressConnectionCache.Set(HostIpAddress, conn)
} else {
//?How to deal with connection's not alive
conn = ipaddressConnectionCache.Get(HostIpAddress).(libvirt.VirConnection)
if ok, _ := conn.IsAlive(); !ok {
log.Printf("remote %s is not alive", HostIpAddress)
conn, err = libvirt.NewVirConnection("qemu+ssh://[email protected]" + HostIpAddress + "/system")
if err != nil {
ipaddressConnectionCache.Delete(HostIpAddress)
return VirtualMachine{}, err
}
/*TODO Write Lock*/
ipaddressConnectionCache.Set(HostIpAddress, conn)
}
}
domain, err := conn.LookupByUUIDString(UUIDString)
if err != nil {
return VirtualMachine{}, err
}
vm := fillVmData(domain, conn)
return vm, nil
}示例2: readLibvirtPysicalMachine
func readLibvirtPysicalMachine(hosts []*PhysicalMachine) {
/* get libvirt connections */
numLiveHost := 0
var conn libvirt.VirConnection
/* use this type in chanStruct */
type connResult struct {
host *PhysicalMachine
conn libvirt.VirConnection
existing bool
}
connChan := make(chan connResult)
var numGoroutines = 0
for _, host := range hosts {
ok := ipaddressConnectionCache.Check(host.IpAddress)
if ok == false {
numGoroutines++
go func(host *PhysicalMachine) {
conn, err := libvirt.NewVirConnection("qemu+ssh://[email protected]" + host.IpAddress + "/system")
if err != nil {
checkErr(err, fmt.Sprintf("failed to connect to %s", host.IpAddress))
host.Existing = false
connChan <- connResult{host: host, existing: false}
return
}
connChan <- connResult{host: host, conn: conn, existing: true}
}(host)
} else {
/* existing a conn which is alive */
conn = ipaddressConnectionCache.Get(host.IpAddress).(libvirt.VirConnection)
if ok, _ := conn.IsAlive(); ok {
host.VirConn = conn
host.Existing = true
numLiveHost++
/* existing a conn which is dead */
} else {
log.Printf("remove %s is not alive", host.IpAddress)
host.Existing = false
ipaddressConnectionCache.Delete(host.IpAddress)
/* TODO ?if close the connectin */
conn.CloseConnection()
}
}
}
for i := 0; i < numGoroutines; i++ {
r := <-connChan
if r.existing {
r.host.VirConn = r.conn
r.host.Existing = true
/*Write Lock*/
ipaddressConnectionCache.Set(r.host.IpAddress, r.conn)
numLiveHost++
}
}
/* all the PhysicalMachines are ready, VirConnection was connected now */
/* receive data from VirConnections */
done := make(chan bool)
for _, host := range hosts {
if host.Existing == false {
continue
}
go func(host *PhysicalMachine) {
domains, _ := host.VirConn.ListAllDomains()
for _, virdomain := range domains {
vm := fillVmData(virdomain, conn)
vm.HostIpAddress = host.IpAddress
if vm.Active == true {
vm.VNCAddress = host.IpAddress
}
//will not have any operations on vm, virdomain could be freeed
virdomain.Free()
host.VirtualMachines = append(host.VirtualMachines, &vm)
}
done <- true
}(host)
}
/* wait for all ListAllDomains finish */
for i := 0; i < numLiveHost; i++ {
<-done
}
}