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vm_show.go
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vm_show.go
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package cmd
import (
"fmt"
"os"
"strings"
"github.com/dustin/go-humanize"
"github.com/exoscale/egoscale"
"github.com/spf13/cobra"
)
type vmShowOutput struct {
ID string `json:"id"`
Name string `json:"name"`
CreationDate string `json:"creation_date"`
Size string `json:"size"`
DiskSize string `json:"disk_size"`
Template string `json:"template"`
Zone string `json:"zone"`
State string `json:"state"`
IPAddress string `json:"ip_address"`
ReverseDNS string `json:"reverse_dns"`
Username string `json:"username"`
SSHKey string `json:"ssh_key"`
SecurityGroups []string `json:"security_groups,omitempty"`
AntiAffinityGroups []string `json:"antiaffinity_groups,omitempty" outputLabel:"Anti-Affinity Groups"`
PrivateNetworks []string `json:"private_networks,omitempty"`
}
func (o *vmShowOutput) Type() string { return "Instance" }
func (o *vmShowOutput) toJSON() { outputJSON(o) }
func (o *vmShowOutput) toText() { outputText(o) }
func (o *vmShowOutput) toTable() { outputTable(o) }
func init() {
vmShowCmd := &cobra.Command{
Use: "show NAME|ID",
Short: "Show a Compute instance details",
Long: fmt.Sprintf(`This command shows a Compute instance details.
Supported output template annotations: %s`,
strings.Join(outputterTemplateAnnotations(&vmShowOutput{}), ", ")),
Aliases: gShowAlias,
ValidArgsFunction: completeVMNames,
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) != 1 {
return cmd.Usage()
}
userDataOnly, err := cmd.Flags().GetBool("user-data")
if err != nil {
return err
}
if userDataOnly {
return showVMUserData(args[0])
}
return output(showVM(args[0]))
},
}
vmShowCmd.Flags().Bool("user-data", false, "Show current cloud-init user data configuration")
vmCmd.AddCommand(vmShowCmd)
}
func showVM(name string) (outputter, error) {
vm, err := getVirtualMachineByNameOrID(name)
if err != nil {
return nil, err
}
resp, err := cs.GetWithContext(gContext, &egoscale.Template{
IsFeatured: true,
ID: vm.TemplateID,
ZoneID: vm.ZoneID,
})
if err != nil {
return nil, err
}
template := resp.(*egoscale.Template)
resp, err = cs.GetWithContext(gContext, &egoscale.Volume{
VirtualMachineID: vm.ID,
Type: "ROOT",
})
if err != nil {
return nil, err
}
volume := resp.(*egoscale.Volume)
reverseDNS, err := cs.RequestWithContext(gContext, &egoscale.QueryReverseDNSForVirtualMachine{ID: vm.ID})
if err != nil {
return nil, err
}
out := vmShowOutput{
ID: vm.ID.String(),
Name: vm.DisplayName,
CreationDate: vm.Created,
Size: vm.ServiceOfferingName,
Template: vm.TemplateName,
Zone: vm.ZoneName,
State: vm.State,
DiskSize: humanize.IBytes(volume.Size),
IPAddress: vm.IP().String(),
ReverseDNS: func(vm *egoscale.VirtualMachine) string {
if len(vm.DefaultNic().ReverseDNS) > 0 {
return vm.DefaultNic().ReverseDNS[0].DomainName
}
return "n/a"
}(reverseDNS.(*egoscale.VirtualMachine)),
Username: "n/a",
SSHKey: vm.KeyPair,
SecurityGroups: make([]string, len(vm.SecurityGroup)),
AntiAffinityGroups: make([]string, len(vm.AffinityGroup)),
PrivateNetworks: make([]string, 0),
}
for i, sg := range vm.SecurityGroup {
out.SecurityGroups[i] = sg.Name
}
for i, aag := range vm.AffinityGroup {
out.AntiAffinityGroups[i] = aag.Name
}
for _, nic := range vm.Nic {
if nic.IsDefault {
continue
}
out.PrivateNetworks = append(out.PrivateNetworks, nic.NetworkName)
}
if username, ok := template.Details["username"]; ok {
out.Username = username
}
// If a single-use SSH keypair has been created for this instance,
// report the private key file location instead of the API SSH key name.
sshKeyPath := getKeyPairPath(vm.ID.String())
if _, err := os.Stat(sshKeyPath); err == nil && out.SSHKey == "" {
out.SSHKey = sshKeyPath
}
return &out, nil
}
func showVMUserData(name string) error {
vm, err := getVirtualMachineByNameOrID(name)
if err != nil {
return err
}
resp, err := cs.SyncRequestWithContext(gContext, &egoscale.GetVirtualMachineUserData{
VirtualMachineID: vm.ID,
})
if err != nil {
return err
}
userData, err := decodeUserData(resp.(*egoscale.VirtualMachineUserData).UserData)
if err != nil {
return err
}
fmt.Println(userData)
return nil
}