/
action.go
389 lines (314 loc) · 8.46 KB
/
action.go
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package lxc
import (
"fmt"
"os"
"strings"
"github.com/spf13/cobra"
"github.com/bketelsen/dlx/config"
"github.com/bketelsen/dlx/state"
"github.com/lxc/lxd/lxc/utils"
"github.com/lxc/lxd/shared"
"github.com/lxc/lxd/shared/api"
cli "github.com/lxc/lxd/shared/cmd"
"github.com/lxc/lxd/shared/i18n"
)
// Start
type cmdStart struct {
global *state.Global
action *cmdAction
}
func (c *cmdStart) Command() *cobra.Command {
cmdAction := cmdAction{global: c.global}
c.action = &cmdAction
cmd := c.action.Command("start")
cmd.Use = usage("start", i18n.G("[<remote>:]<instance> [[<remote>:]<instance>...]"))
cmd.Short = i18n.G("Start instances")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Start instances`))
return cmd
}
// Pause
type cmdPause struct {
global *state.Global
action *cmdAction
}
func (c *cmdPause) Command() *cobra.Command {
cmdAction := cmdAction{global: c.global}
c.action = &cmdAction
cmd := c.action.Command("pause")
cmd.Use = usage("pause", i18n.G("[<remote>:]<instance> [[<remote>:]<instance>...]"))
cmd.Short = i18n.G("Pause instances")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Pause instances`))
cmd.Hidden = true
return cmd
}
// Restart
type cmdRestart struct {
global *state.Global
action *cmdAction
}
func (c *cmdRestart) Command() *cobra.Command {
cmdAction := cmdAction{global: c.global}
c.action = &cmdAction
cmd := c.action.Command("restart")
cmd.Use = usage("restart", i18n.G("[<remote>:]<instance> [[<remote>:]<instance>...]"))
cmd.Short = i18n.G("Restart instances")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Restart instances
The opposite of "lxc pause" is "lxc start".`))
return cmd
}
// Stop
type cmdStop struct {
global *state.Global
action *cmdAction
}
func (c *cmdStop) Command() *cobra.Command {
cmdAction := cmdAction{global: c.global}
c.action = &cmdAction
cmd := c.action.Command("stop")
cmd.Use = usage("stop", i18n.G("[<remote>:]<instance> [[<remote>:]<instance>...]"))
cmd.Short = i18n.G("Stop instances")
cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
`Stop instances`))
return cmd
}
type cmdAction struct {
global *state.Global
flagAll bool
flagConsole string
flagForce bool
flagStateful bool
flagStateless bool
flagTimeout int
}
func (c *cmdAction) Command(action string) *cobra.Command {
cmd := &cobra.Command{}
cmd.RunE = c.Run
cmd.Flags().BoolVar(&c.flagAll, "all", false, i18n.G("Run against all instances"))
if action == "stop" {
cmd.Flags().BoolVar(&c.flagStateful, "stateful", false, i18n.G("Store the instance state"))
} else if action == "start" {
cmd.Flags().BoolVar(&c.flagStateless, "stateless", false, i18n.G("Ignore the instance state"))
}
if shared.StringInSlice(action, []string{"start", "restart", "stop"}) {
cmd.Flags().StringVar(&c.flagConsole, "console", "", i18n.G("Immediately attach to the console")+"``")
cmd.Flags().Lookup("console").NoOptDefVal = "console"
}
if shared.StringInSlice(action, []string{"restart", "stop"}) {
cmd.Flags().BoolVarP(&c.flagForce, "force", "f", false, i18n.G("Force the instance to shutdown"))
cmd.Flags().IntVar(&c.flagTimeout, "timeout", -1, i18n.G("Time to wait for the instance before killing it")+"``")
}
return cmd
}
func (c *cmdAction) doActionAll(action string, resource state.RemoteResource) error {
if resource.Name != "" {
// both --all and instance name given.
return fmt.Errorf(i18n.G("Both --all and instance name given"))
}
remote := resource.Remote
d, err := c.global.Conf.GetInstanceServer(remote)
if err != nil {
return err
}
// Pause is called freeze.
if action == "pause" {
action = "freeze"
}
// Only store state if asked to.
state := false
if action == "stop" && c.flagStateful {
state = true
}
req := api.InstancesPut{
State: &api.InstanceStatePut{
Action: action,
Timeout: c.flagTimeout,
Force: c.flagForce,
Stateful: state,
},
}
// Update all instances.
op, err := d.UpdateInstances(req, "")
if err != nil {
return err
}
progress := utils.ProgressRenderer{
Quiet: c.global.FlagQuiet,
}
_, err = op.AddHandler(progress.UpdateOp)
if err != nil {
progress.Done("")
return err
}
err = utils.CancelableWait(op, &progress)
if err != nil {
progress.Done("")
return err
}
progress.Done("")
return nil
}
func (c *cmdAction) doAction(action string, conf *config.Config, nameArg string) error {
state := false
// Pause is called freeze
if action == "pause" {
action = "freeze"
}
// Only store state if asked to
if action == "stop" && c.flagStateful {
state = true
}
if action == "stop" && c.flagForce && c.flagConsole != "" {
return fmt.Errorf(i18n.G("--console can't be used while forcing instance shutdown"))
}
remote, name, err := conf.ParseRemote(nameArg)
if err != nil {
return err
}
d, err := conf.GetInstanceServer(remote)
if err != nil {
return err
}
if name == "" {
return fmt.Errorf(i18n.G("Must supply instance name for: ")+"\"%s\"", nameArg)
}
if action == "start" {
current, _, err := d.GetInstance(name)
if err != nil {
return err
}
// "start" for a frozen instance means "unfreeze"
if current.StatusCode == api.Frozen {
action = "unfreeze"
}
// Always restore state (if present) unless asked not to
if action == "start" && current.Stateful && !c.flagStateless {
state = true
}
}
req := api.InstanceStatePut{
Action: action,
Timeout: c.flagTimeout,
Force: c.flagForce,
Stateful: state,
}
op, err := d.UpdateInstanceState(name, req, "")
if err != nil {
return err
}
if action == "stop" && c.flagConsole != "" {
// Handle console attach
console := cmdConsole{}
console.global = c.global
console.flagType = c.flagConsole
return console.Console(d, name)
}
progress := utils.ProgressRenderer{
Quiet: c.global.FlagQuiet,
}
_, err = op.AddHandler(progress.UpdateOp)
if err != nil {
progress.Done("")
return err
}
// Wait for operation to finish
err = utils.CancelableWait(op, &progress)
if err != nil {
progress.Done("")
return fmt.Errorf("%s\n"+i18n.G("Try `lxc info --show-log %s` for more info"), err, nameArg)
}
progress.Done("")
// Handle console attach
if c.flagConsole != "" {
console := cmdConsole{}
console.global = c.global
console.flagType = c.flagConsole
return console.Console(d, name)
}
return nil
}
func (c *cmdAction) Run(cmd *cobra.Command, args []string) error {
conf := c.global.Conf
var names []string
if c.flagAll {
// If no server passed, use current default.
if len(args) == 0 {
args = []string{fmt.Sprintf("%s:", conf.DefaultRemote)}
}
// Get all the servers.
resources, err := c.global.ParseServers(args...)
if err != nil {
return err
}
for _, resource := range resources {
// We don't allow instance names with --all.
if resource.Name != "" {
return fmt.Errorf(i18n.G("Both --all and instance name given"))
}
// See if we can use the bulk API.
if resource.Server.HasExtension("instance_bulk_state_change") {
err = c.doActionAll(cmd.Name(), resource)
if err != nil {
return fmt.Errorf("%s: %v", resource.Remote, err)
}
continue
}
ctslist, err := resource.Server.GetInstances(api.InstanceTypeAny)
if err != nil {
return err
}
for _, ct := range ctslist {
switch cmd.Name() {
case "start":
if ct.StatusCode == api.Running {
continue
}
case "stop":
if ct.StatusCode == api.Stopped {
continue
}
}
names = append(names, fmt.Sprintf("%s:%s", resource.Remote, ct.Name))
}
}
} else {
names = args
if len(args) == 0 {
cmd.Usage()
return nil
}
}
if c.flagConsole != "" {
if c.flagAll {
return fmt.Errorf(i18n.G("--console can't be used with --all"))
}
if len(names) != 1 {
return fmt.Errorf(i18n.G("--console only works with a single instance"))
}
}
// Run the action for every listed instance
results := runBatch(names, func(name string) error { return c.doAction(cmd.Name(), conf, name) })
// Single instance is easy
if len(results) == 1 {
return results[0].err
}
// Do fancier rendering for batches
success := true
for _, result := range results {
if result.err == nil {
continue
}
success = false
msg := fmt.Sprintf(i18n.G("error: %v"), result.err)
for _, line := range strings.Split(msg, "\n") {
fmt.Fprintf(os.Stderr, "%s: %s\n", result.name, line)
}
}
if !success {
fmt.Fprintln(os.Stderr, "")
return fmt.Errorf(i18n.G("Some instances failed to %s"), cmd.Name())
}
return nil
}