/
patchVmImage.go
77 lines (71 loc) · 1.78 KB
/
patchVmImage.go
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package main
import (
"errors"
"fmt"
"net"
"github.com/Cloud-Foundations/Dominator/lib/log"
"github.com/Cloud-Foundations/Dominator/lib/srpc"
proto "github.com/Cloud-Foundations/Dominator/proto/hypervisor"
)
func patchVmImageSubcommand(args []string, logger log.DebugLogger) error {
if err := patchVmImage(args[0], logger); err != nil {
return fmt.Errorf("error patching VM image: %s", err)
}
return nil
}
func callPatchVmImage(client *srpc.Client, request proto.PatchVmImageRequest,
reply *proto.PatchVmImageResponse, logger log.DebugLogger) error {
conn, err := client.Call("Hypervisor.PatchVmImage")
if err != nil {
return err
}
defer conn.Close()
if err := conn.Encode(request); err != nil {
return err
}
if err := conn.Flush(); err != nil {
return err
}
for {
var response proto.PatchVmImageResponse
if err := conn.Decode(&response); err != nil {
return err
}
if response.Error != "" {
return errors.New(response.Error)
}
if response.ProgressMessage != "" {
logger.Debugln(0, response.ProgressMessage)
}
if response.Final {
*reply = response
return nil
}
}
}
func patchVmImage(vmHostname string, logger log.DebugLogger) error {
if vmIP, hypervisor, err := lookupVmAndHypervisor(vmHostname); err != nil {
return err
} else {
return patchVmImageOnHypervisor(hypervisor, vmIP, logger)
}
}
func patchVmImageOnHypervisor(hypervisor string, ipAddr net.IP,
logger log.DebugLogger) error {
request := proto.PatchVmImageRequest{
ImageName: *imageName,
ImageTimeout: *imageTimeout,
IpAddress: ipAddr,
}
client, err := dialHypervisor(hypervisor)
if err != nil {
return err
}
defer client.Close()
var reply proto.PatchVmImageResponse
err = callPatchVmImage(client, request, &reply, logger)
if err != nil {
return err
}
return nil
}