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vm_reset.go
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vm_reset.go
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package cmd
import (
"fmt"
"github.com/exoscale/egoscale"
"github.com/spf13/cobra"
)
var vmResetCmd = &cobra.Command{
Use: "reset NAME|ID",
Short: "Reset (reinstall) a Compute instance",
ValidArgsFunction: completeVMNames,
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) < 1 {
return cmd.Usage()
}
diskValue, err := getInt64CustomFlag(cmd, "disk")
if err != nil {
return err
}
templateFilterCmd, err := cmd.Flags().GetString("template-filter")
if err != nil {
return err
}
templateFilter, err := validateTemplateFilter(templateFilterCmd)
if err != nil {
return err
}
template, err := cmd.Flags().GetString("template")
if err != nil {
return err
}
force, err := cmd.Flags().GetBool("force")
if err != nil {
return err
}
tasks := make([]task, 0, len(args))
for _, v := range args {
if !force {
if !askQuestion(fmt.Sprintf("Are you sure you want to reset Compute instance %q?", v)) {
continue
}
}
task, err := makeResetVirtualMachineCMD(v, diskValue, template, templateFilter)
if err != nil {
return err
}
tasks = append(tasks, *task)
}
taskResponses := asyncTasks(tasks)
errors := filterErrors(taskResponses)
if len(errors) > 0 {
return errors[0]
}
return nil
},
}
func makeResetVirtualMachineCMD(vmName string, diskValue int64PtrValue, templateName string, templateFilter string) (*task, error) {
vm, err := getVirtualMachineByNameOrID(vmName)
if err != nil {
return nil, err
}
var template *egoscale.Template
if templateName != "" {
template, err = getTemplateByNameOrID(vm.ZoneID, templateName, templateFilter)
if err != nil {
return nil, err
}
} else {
resp, err := cs.ListWithContext(gContext, egoscale.Template{
IsFeatured: true,
ID: vm.TemplateID,
ZoneID: vm.ZoneID,
})
if err != nil {
return nil, err
}
if len(resp) > 0 {
template = resp[0].(*egoscale.Template)
}
}
resp, err := cs.GetWithContext(gContext, egoscale.Volume{
VirtualMachineID: vm.ID,
Type: "ROOT",
})
if err != nil {
return nil, fmt.Errorf("unable to retrieve Compute instance volume: %v", err)
}
volume := resp.(*egoscale.Volume)
volumeSize := volume.Size >> 30
rootDiskSize := int64(volumeSize)
if diskValue.int64 != nil {
if template != nil && *diskValue.int64 < (template.Size>>30) {
return nil, fmt.Errorf("root disk size must be equal or greater than %dGB", template.Size>>30)
}
rootDiskSize = *diskValue.int64
}
cmd := &egoscale.RestoreVirtualMachine{
VirtualMachineID: vm.ID,
RootDiskSize: rootDiskSize,
}
var msg string
if template != nil {
cmd.TemplateID = template.ID
msg = fmt.Sprintf("Resetting %q using %q", vm.Name, template.DisplayText)
} else {
msg = fmt.Sprintf("Resetting %q ", vm.Name)
}
return &task{cmd, msg}, nil
}
func init() {
vmCmd.AddCommand(vmResetCmd)
diskSizeVarP := new(int64PtrValue)
vmResetCmd.Flags().VarP(diskSizeVarP, "disk", "d", "New disk size after reset in GB")
vmResetCmd.Flags().StringP("template", "t", "", fmt.Sprintf("template NAME|ID (default: %s)", defaultTemplate))
vmResetCmd.Flags().StringP("template-filter", "", defaultTemplateFilter, templateFilterHelp)
vmResetCmd.Flags().BoolP("force", "f", false, cmdFlagForceHelp)
}