Support of 'scw run --rm' option (Fix #117)

Author: moul

README.md

@@ -589,11 +589,14 @@ Options:
   -g, --gateway=""      Use a SSH gateway
   -h, --help=false      Print usage
   --name=""             Assign a name
+  --rm=false            Automatically remove the server when it exits
   -v, --volume=""       Attach additional volume (i.e., 50G)
 
 Examples:
 
     $ scw run ubuntu-trusty
+    $ scw run --rm ubuntu-trusty
+    $ scw run -a --rm ubuntu-trusty
     $ scw run --gateway=myotherserver ubuntu-trusty
     $ scw run ubuntu-trusty bash
     $ scw run --name=mydocker docker docker run moul/nyancat:armhf
@@ -1041,7 +1044,8 @@ $ scw inspect myserver | jq '.[0].public_ip.address'
 
 #### Features
 
-* Support of `--gateway=login@host` ([#110](https://github.com/scaleway/scaleway-cli/issues/110))
+* Support -f `scw run --rm` option ([#117](https://github.com/scaleway/scaleway-cli/issues/117))
+* Support of `--gateway=login@host` ([#110](https://github.com/scaleway/scaleway-cli/issues/110))p
 * Upload local ssh key to scaleway account on `scw login` ([#100](https://github.com/scaleway/scaleway-cli/issues/100))
 * Add a 'running indicator' for `scw run`, can be disabled with the new flag `--quiet`
 * Support of `scw -V/--verbose` option ([#83](https://github.com/scaleway/scaleway-cli/issues/83))

pkg/api/helpers.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/scaleway/scaleway-cli/pkg/utils"
+	"github.com/scaleway/scaleway-cli/vendor/github.com/Sirupsen/logrus"
 	log "github.com/scaleway/scaleway-cli/vendor/github.com/Sirupsen/logrus"
 	"github.com/scaleway/scaleway-cli/vendor/github.com/docker/docker/pkg/namesgenerator"
 	"github.com/scaleway/scaleway-cli/vendor/github.com/dustin/go-humanize"
@@ -509,3 +510,23 @@ func StartServerOnce(api *ScalewayAPI, needle string, wait bool, successChan cha
 	fmt.Println(needle)
 	successChan <- true
 }
+
+// DeleteServerSafe tries to delete a server using multiple ways
+func (a *ScalewayAPI) DeleteServerSafe(serverID string) error {
+	// FIXME: also delete attached volumes and ip address
+	err := a.DeleteServer(serverID)
+	if err == nil {
+		logrus.Infof("Server '%s' successfuly deleted", serverID)
+		return nil
+	}
+
+	err = a.PostServerAction(serverID, "terminate")
+	if err == nil {
+		logrus.Infof("Server '%s' successfuly terminated", serverID)
+		return nil
+	}
+
+	logrus.Errorf("Failed to delete server %s", serverID)
+	logrus.Errorf("Try to run 'scw rm %s' later", serverID)
+	return err
+}

pkg/cli/run.go

@@ -20,6 +20,8 @@ var cmdRun = &Command{
 	Help:        "Run a command in a new server.",
 	Examples: `
     $ scw run ubuntu-trusty
+    $ scw run --rm ubuntu-trusty
+    $ scw run -a --rm ubuntu-trusty
     $ scw run --gateway=myotherserver ubuntu-trusty
     $ scw run ubuntu-trusty bash
     $ scw run --name=mydocker docker docker run moul/nyancat:armhf
@@ -38,11 +40,13 @@ func init() {
 	cmdRun.Flag.BoolVar(&runAttachFlag, []string{"a", "-attach"}, false, "Attach to serial console")
 	cmdRun.Flag.BoolVar(&runDetachFlag, []string{"d", "-detach"}, false, "Run server in background and print server ID")
 	cmdRun.Flag.StringVar(&runGateway, []string{"g", "-gateway"}, "", "Use a SSH gateway")
+	cmdRun.Flag.BoolVar(&runAutoRemove, []string{"-rm"}, false, "Automatically remove the server when it exits")
 	// FIXME: handle start --timeout
 }
 
 // Flags
 var runCreateName string       // --name flag
+var runAutoRemove bool         // --rm flag
 var runCreateBootscript string // --bootscript flag
 var runCreateEnv string        // -e, --env flag
 var runCreateVolume string     // -v, --volume flag
@@ -67,6 +71,9 @@ func runRun(cmd *Command, rawArgs []string) {
 	if runDetachFlag && len(rawArgs) > 1 {
 		log.Fatalf("Conflicting options: -d and COMMAND")
 	}
+	if runAutoRemove && runDetachFlag {
+		log.Fatalf("Conflicting options: --attach and --rm")
+	}
 
 	args := commands.RunArgs{
 		Attach:     runAttachFlag,
@@ -78,6 +85,7 @@ func runRun(cmd *Command, rawArgs []string) {
 		Name:       runCreateName,
 		Tags:       strings.Split(runCreateEnv, " "),
 		Volumes:    strings.Split(runCreateVolume, " "),
+		AutoRemove: runAutoRemove,
 		// FIXME: DynamicIPRequired
 		// FIXME: Timeout
 	}

pkg/commands/run.go

@@ -24,6 +24,7 @@ type RunArgs struct {
 	Name       string
 	Tags       []string
 	Volumes    []string
+	AutoRemove bool
 	// DynamicIPRequired
 	// Timeout
 }
@@ -46,6 +47,10 @@ func Run(ctx CommandContext, args RunArgs) error {
 	}
 	logrus.Infof("Server created: %s", serverID)
 
+	if args.AutoRemove {
+		defer ctx.API.DeleteServerSafe(serverID)
+	}
+
 	// start SERVER
 	logrus.Info("Server start requested ...")
 	err = api.StartServer(ctx.API, serverID, false)