create/start/stop/delete, no state yet

README.md

@@ -1,2 +1,3 @@
 # k3d-go
-https://github.com/zeerorg/k3s-in-docker reimplemented in Golang
+
+[zeerorg/k3s-in-docker](https://github.com/zeerorg/k3s-in-docker) reimplemented in Golang... just because I didn't have time to learn Rust.

main.go

@@ -9,28 +9,78 @@ import (
 	"github.com/urfave/cli"
 )
 
-func checkTools(c *cli.Context) error {
-	fmt.Println("TEST check")
-	return nil
-}
-
 func createCluster(c *cli.Context) error {
-	fmt.Println("TEST create")
+	port := fmt.Sprintf("%s:%s", c.String("port"), c.String("port"))
+	image := fmt.Sprintf("rancher/k3s:%s", c.String("version"))
+	cmd := "docker"
+	args := []string{
+		"run",
+		"--name", c.String("name"),
+		"-e", "K3S_KUBECONFIG_OUTPUT=/output/kubeconfig.yaml",
+		"--publish", port,
+		"--privileged",
+	}
+	extraArgs := []string{}
+	if c.IsSet("volume") {
+		extraArgs = append(extraArgs, fmt.Sprintf("--volume %s", c.String("volume")))
+	}
+	if len(extraArgs) > 0 {
+		for _, extra := range extraArgs {
+			args = append(args, extra)
+		}
+	}
+	args = append(args,
+		"-d",
+		image,
+		"server",                                // cmd
+		"--https-listen-port", c.String("port"), //args
+	)
+	log.Printf("Creating cluster [%s]", c.String("name"))
+	log.Printf("Running command: %+v", exec.Command(cmd, args...).Args)
+	if err := exec.Command(cmd, args...).Run(); err != nil {
+		log.Fatalf("FAILURE: couldn't create cluster [%s] Err: %+v", c.String("name"), err)
+		return err
+	}
+	log.Printf("SUCCESS: created cluster [%s]", c.String("name"))
 	return nil
 }
 
 func deleteCluster(c *cli.Context) error {
-	fmt.Println("TEST delete")
+	cmd := "docker"
+	args := []string{"rm", "-f", c.String("name")}
+	log.Printf("Deleting cluster [%s]", c.String("name"))
+	log.Printf("Running command: %+v", exec.Command(cmd, args...).Args)
+	if err := exec.Command(cmd, args...).Run(); err != nil {
+		log.Fatalf("FAILURE: couldn't delete cluster [%s] Err: %+v", c.String("name"), err)
+		return err
+	}
+	log.Printf("SUCCESS: deleted cluster [%s]", c.String("name"))
 	return nil
 }
 
 func stopCluster(c *cli.Context) error {
-	fmt.Println("TEST stop")
+	cmd := "docker"
+	args := []string{"stop", c.String("name")}
+	log.Printf("Stopping cluster [%s]", c.String("name"))
+	log.Printf("Running command: %+v", exec.Command(cmd, args...).Args)
+	if err := exec.Command(cmd, args...).Run(); err != nil {
+		log.Fatalf("FAILURE: couldn't stop cluster [%s] Err: %+v", c.String("name"), err)
+		return err
+	}
+	log.Printf("SUCCESS: stopped cluster [%s]", c.String("name"))
 	return nil
 }
 
 func startCluster(c *cli.Context) error {
-	fmt.Println("TEST start")
+	cmd := "docker"
+	args := []string{"start", c.String("name")}
+	log.Printf("Starting cluster [%s]", c.String("name"))
+	log.Printf("Running command: %+v", exec.Command(cmd, args...).Args)
+	if err := exec.Command(cmd, args...).Run(); err != nil {
+		log.Fatalf("FAILURE: couldn't start cluster [%s] Err: %+v", c.String("name"), err)
+		return err
+	}
+	log.Printf("SUCCESS: started cluster [%s]", c.String("name"))
 	return nil
 }
 
@@ -40,7 +90,17 @@ func listClusters(c *cli.Context) error {
 }
 
 func getConfig(c *cli.Context) error {
-	fmt.Println("TEST get")
+	sourcePath := fmt.Sprintf("%s:/output/kubeconfig.yaml", c.String("name"))
+	destPath := fmt.Sprintf("./kubeconfig-%s.yaml", c.String("name"))
+	cmd := "docker"
+	args := []string{"cp", sourcePath, destPath}
+	log.Printf("Grabbing kubeconfig for cluster [%s]", c.String("name"))
+	log.Printf("Running command: %+v", exec.Command(cmd, args...).Args)
+	if err := exec.Command(cmd, args...).Run(); err != nil {
+		log.Fatalf("FAILURE: couldn't get kubeconfig for cluster [%s] Err: %+v", c.String("name"), err)
+		return err
+	}
+	log.Printf("SUCCESS: retrieved kubeconfig for cluster [%s]", c.String("name"))
 	return nil
 }
 
@@ -49,10 +109,18 @@ func main() {
 	var clusterName string
 	var serverPort int
 	var volume string
+	var k3sVersion string
 
 	app := cli.NewApp()
 	app.Name = "k3d"
 	app.Usage = "Run k3s in Docker!"
+	app.Version = "0.0.1"
+	app.Authors = []cli.Author{
+		cli.Author{
+			Name:  "iwilltry42",
+			Email: "iwilltry42@gmail.com",
+		},
+	}
 
 	app.Commands = []cli.Command{
 		{
@@ -87,6 +155,12 @@ func main() {
 					Usage:       "Mount a volume into the cluster node (Docker notation: `source:destination`",
 					Destination: &volume,
 				},
+				cli.StringFlag{
+					Name:        "version",
+					Value:       "v0.1.0",
+					Usage:       "Choose the k3s image version",
+					Destination: &k3sVersion,
+				},
 				cli.IntFlag{
 					Name:        "port, p",
 					Value:       6443,