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Merge pull request #555 from rgooch/master
Add VM copy capability.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/gob" | ||
| "errors" | ||
| "fmt" | ||
| "net" | ||
| "os" | ||
|
|
||
| "github.com/Symantec/Dominator/lib/log" | ||
| "github.com/Symantec/Dominator/lib/srpc" | ||
| hyper_proto "github.com/Symantec/Dominator/proto/hypervisor" | ||
| ) | ||
|
|
||
| func copyVmSubcommand(args []string, logger log.DebugLogger) { | ||
| if err := copyVm(args[0], logger); err != nil { | ||
| fmt.Fprintf(os.Stderr, "Error copying VM: %s\n", err) | ||
| os.Exit(1) | ||
| } | ||
| os.Exit(0) | ||
| } | ||
|
|
||
| func copyVm(vmHostname string, logger log.DebugLogger) error { | ||
| if vmIP, hypervisor, err := searchVmAndHypervisor(vmHostname); err != nil { | ||
| return err | ||
| } else { | ||
| return copyVmFromHypervisor(hypervisor, vmIP, logger) | ||
| } | ||
| } | ||
|
|
||
| func callCopyVm(client *srpc.Client, request hyper_proto.CopyVmRequest, | ||
| reply *hyper_proto.CopyVmResponse, logger log.DebugLogger) error { | ||
| conn, err := client.Call("Hypervisor.CopyVm") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer conn.Close() | ||
| encoder := gob.NewEncoder(conn) | ||
| decoder := gob.NewDecoder(conn) | ||
| if err := encoder.Encode(request); err != nil { | ||
| return err | ||
| } | ||
| if err := conn.Flush(); err != nil { | ||
| return err | ||
| } | ||
| for { | ||
| var response hyper_proto.CopyVmResponse | ||
| if err := decoder.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 copyVmFromHypervisor(sourceHypervisorAddress string, vmIP net.IP, | ||
| logger log.DebugLogger) error { | ||
| destHypervisorAddress, err := getHypervisorAddress() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| sourceHypervisor, err := dialHypervisor(sourceHypervisorAddress) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer sourceHypervisor.Close() | ||
| accessToken, err := getVmAccessTokenClient(sourceHypervisor, vmIP) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer discardAccessToken(sourceHypervisor, vmIP) | ||
| destHypervisor, err := dialHypervisor(destHypervisorAddress) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer destHypervisor.Close() | ||
| request := hyper_proto.CopyVmRequest{ | ||
| AccessToken: accessToken, | ||
| DhcpTimeout: *dhcpTimeout, | ||
| IpAddress: vmIP, | ||
| SourceHypervisor: sourceHypervisorAddress, | ||
| } | ||
| var reply hyper_proto.CopyVmResponse | ||
| if err := callCopyVm(destHypervisor, request, &reply, logger); err != nil { | ||
| return err | ||
| } | ||
| if err := acknowledgeVm(destHypervisor, reply.IpAddress); err != nil { | ||
| return fmt.Errorf("error acknowledging VM: %s", err) | ||
| } | ||
| fmt.Println(reply.IpAddress) | ||
| if reply.DhcpTimedOut { | ||
| return errors.New("DHCP ACK timed out") | ||
| } | ||
| if *dhcpTimeout > 0 { | ||
| logger.Debugln(0, "Received DHCP ACK") | ||
| } | ||
| return maybeWatchVm(destHypervisor, destHypervisorAddress, reply.IpAddress, | ||
| logger) | ||
| } |
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