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power.go
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power.go
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package main
import (
"fmt"
"os"
fmclient "github.com/Cloud-Foundations/Dominator/fleetmanager/client"
hyperclient "github.com/Cloud-Foundations/Dominator/hypervisor/client"
"github.com/Cloud-Foundations/Dominator/lib/errors"
"github.com/Cloud-Foundations/Dominator/lib/log"
"github.com/Cloud-Foundations/Dominator/lib/srpc"
)
func powerOffSubcommand(args []string, logger log.DebugLogger) error {
err := powerOff(logger)
if err != nil {
return fmt.Errorf("error powering down: %s", err)
}
return nil
}
func powerOff(logger log.DebugLogger) error {
if *hypervisorHostname == "" {
return errors.New("cannot power down myself")
}
if hostname, err := os.Hostname(); err != nil {
return err
} else if *hypervisorHostname == hostname {
return errors.New("cannot power down myself")
}
clientName := fmt.Sprintf("%s:%d", *hypervisorHostname, *hypervisorPortNum)
client, err := srpc.DialHTTP("tcp", clientName, 0)
if err != nil {
return err
}
defer client.Close()
return hyperclient.PowerOff(client, false)
}
func powerOnSubcommand(args []string, logger log.DebugLogger) error {
err := powerOn(logger)
if err != nil {
return fmt.Errorf("error powering up: %s", err)
}
return nil
}
func powerOn(logger log.DebugLogger) error {
if *hypervisorHostname == "" {
return errors.New("unspecified Hypervisor")
}
if *fleetManagerHostname == "" {
return errors.New("unspecified Fleet Manager")
}
clientName := fmt.Sprintf("%s:%d", *fleetManagerHostname,
*fleetManagerPortNum)
client, err := srpc.DialHTTP("tcp", clientName, 0)
if err != nil {
return err
}
defer client.Close()
return fmclient.PowerOnMachine(client, *hypervisorHostname)
}