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package main
import (
"fmt"
"io"
"os"
"github.com/spf13/cobra"
"gopkg.in/yaml.v2"
"github.com/canonical/lxd/shared"
"github.com/canonical/lxd/shared/api"
cli "github.com/canonical/lxd/shared/cmd"
"github.com/canonical/lxd/shared/i18n"
"github.com/canonical/lxd/shared/termios"
)
type cmdConfigMetadata struct {
global *cmdGlobal
config *cmdConfig
}
func (c *cmdConfigMetadata) Command() *cobra.Command {
cmd := &cobra.Command{}
cmd.Use = usage("metadata")
cmd.Short = i18n.G("Manage instance metadata files")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Manage instance metadata files`))
// Edit
configMetadataEditCmd := cmdConfigMetadataEdit{global: c.global, config: c.config, configMetadata: c}
cmd.AddCommand(configMetadataEditCmd.Command())
// Show
configMetadataShowCmd := cmdConfigMetadataShow{global: c.global, config: c.config, configMetadata: c}
cmd.AddCommand(configMetadataShowCmd.Command())
// Workaround for subcommand usage errors. See: https://github.com/spf13/cobra/issues/706
cmd.Args = cobra.NoArgs
cmd.Run = func(cmd *cobra.Command, args []string) { _ = cmd.Usage() }
return cmd
}
// Edit.
type cmdConfigMetadataEdit struct {
global *cmdGlobal
config *cmdConfig
configMetadata *cmdConfigMetadata
}
func (c *cmdConfigMetadataEdit) Command() *cobra.Command {
cmd := &cobra.Command{}
cmd.Use = usage("edit", i18n.G("[<remote>:]<instance>"))
cmd.Short = i18n.G("Edit instance metadata files")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Edit instance metadata files`))
cmd.RunE = c.Run
return cmd
}
func (c *cmdConfigMetadataEdit) helpTemplate() string {
return i18n.G(
`### This is a YAML representation of the instance metadata.
### Any line starting with a '# will be ignored.
###
### A sample configuration looks like:
###
### architecture: x86_64
### creation_date: 1477146654
### expiry_date: 0
### properties:
### architecture: x86_64
### description: BusyBox x86_64
### name: busybox-x86_64
### os: BusyBox
### templates:
### /template:
### when:
### - ""
### create_only: false
### template: template.tpl
### properties: {}`)
}
func (c *cmdConfigMetadataEdit) Run(cmd *cobra.Command, args []string) error {
// Quick checks.
exit, err := c.global.CheckArgs(cmd, args, 1, 1)
if exit {
return err
}
// Parse remote
resources, err := c.global.ParseServers(args[0])
if err != nil {
return err
}
resource := resources[0]
if resource.name == "" {
return fmt.Errorf(i18n.G("Missing instance name"))
}
// Edit the metadata
if !termios.IsTerminal(getStdinFd()) {
metadata := api.ImageMetadata{}
content, err := io.ReadAll(os.Stdin)
if err != nil {
return err
}
err = yaml.Unmarshal(content, &metadata)
if err != nil {
return err
}
return resource.server.UpdateInstanceMetadata(resource.name, metadata, "")
}
metadata, etag, err := resource.server.GetInstanceMetadata(resource.name)
if err != nil {
return err
}
origContent, err := yaml.Marshal(metadata)
if err != nil {
return err
}
// Spawn the editor
content, err := shared.TextEditor("", []byte(c.helpTemplate()+"\n\n"+string(origContent)))
if err != nil {
return err
}
for {
metadata := api.ImageMetadata{}
err = yaml.Unmarshal(content, &metadata)
if err == nil {
err = resource.server.UpdateInstanceMetadata(resource.name, metadata, etag)
}
// Respawn the editor
if err != nil {
fmt.Fprintf(os.Stderr, i18n.G("Config parsing error: %s")+"\n", err)
fmt.Println(i18n.G("Press enter to open the editor again or ctrl+c to abort change"))
_, err := os.Stdin.Read(make([]byte, 1))
if err != nil {
return err
}
content, err = shared.TextEditor("", content)
if err != nil {
return err
}
continue
}
break
}
return nil
}
// Show.
type cmdConfigMetadataShow struct {
global *cmdGlobal
config *cmdConfig
configMetadata *cmdConfigMetadata
}
func (c *cmdConfigMetadataShow) Command() *cobra.Command {
cmd := &cobra.Command{}
cmd.Use = usage("show", i18n.G("[<remote>:]<instance>"))
cmd.Short = i18n.G("Show instance metadata files")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Show instance metadata files`))
cmd.RunE = c.Run
return cmd
}
func (c *cmdConfigMetadataShow) Run(cmd *cobra.Command, args []string) error {
// Quick checks.
exit, err := c.global.CheckArgs(cmd, args, 1, 1)
if exit {
return err
}
// Parse remote
resources, err := c.global.ParseServers(args[0])
if err != nil {
return err
}
resource := resources[0]
if resource.name == "" {
return fmt.Errorf(i18n.G("Missing instance name"))
}
// Show the instance metadata
metadata, _, err := resource.server.GetInstanceMetadata(resource.name)
if err != nil {
return err
}
content, err := yaml.Marshal(metadata)
if err != nil {
return err
}
fmt.Printf("%s", content)
return nil
}
|
