func main() {
repo := util.NewRepo()
app := cli.NewApp()
app.Name = "capstan"
app.Version = VERSION
app.Usage = "pack, ship, and run applications in light-weight VMs"
app.Commands = []cli.Command{
{
Name: "info",
Usage: "show disk image information",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan info [image-file]")
return
}
image := c.Args()[0]
err := cmd.Info(image)
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "import",
Usage: "import an image to the local repository",
Flags: []cli.Flag{
cli.StringFlag{Name: "v", Value: "", Usage: "image version"},
cli.StringFlag{Name: "c", Value: "", Usage: "image creation date"},
cli.StringFlag{Name: "d", Value: "", Usage: "image description"},
cli.StringFlag{Name: "b", Value: "", Usage: "image build command"},
},
Action: func(c *cli.Context) {
if len(c.Args()) != 2 {
fmt.Println("usage: capstan import [image-name] [image-file]")
return
}
err := repo.ImportImage(c.Args()[0], c.Args()[1], c.String("v"), c.String("c"), c.String("d"), c.String("b"))
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "pull",
Usage: "pull an image from a repository",
Flags: []cli.Flag{
cli.StringFlag{Name: "p", Value: hypervisor.Default(), Usage: "hypervisor: qemu|vbox|vmw|gce"},
},
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan pull [image-name]")
return
}
hypervisor := c.String("p")
if !isValidHypervisor(hypervisor) {
fmt.Printf("error: '%s' is not a supported hypervisor\n", c.String("p"))
return
}
err := cmd.Pull(repo, hypervisor, c.Args().First())
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "rmi",
Usage: "delete an image from a repository",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan rmi [image-name]")
return
}
err := repo.RemoveImage(c.Args().First())
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "run",
Usage: "launch a VM. You may pass the image name as the first argument.",
Flags: []cli.Flag{
cli.StringFlag{Name: "i", Value: "", Usage: "image_name"},
cli.StringFlag{Name: "p", Value: hypervisor.Default(), Usage: "hypervisor: qemu|vbox|vmw|gce"},
cli.StringFlag{Name: "m", Value: "1G", Usage: "memory size"},
cli.IntFlag{Name: "c", Value: 2, Usage: "number of CPUs"},
cli.StringFlag{Name: "n", Value: "nat", Usage: "networking: nat|bridge|tap"},
cli.BoolFlag{Name: "v", Usage: "verbose mode"},
cli.StringFlag{Name: "b", Value: "", Usage: "networking device (bridge or tap): e.g., virbr0, vboxnet0, tap0"},
cli.StringSliceFlag{Name: "f", Value: new(cli.StringSlice), Usage: "port forwarding rules"},
cli.StringFlag{Name: "gce-upload-dir", Value: "", Usage: "Directory to upload local image to: e.g., gs://osvimg"},
cli.StringFlag{Name: "mac", Value: "", Usage: "MAC address. If not specified, the MAC address will be generated automatically."},
},
Action: func(c *cli.Context) {
config := &cmd.RunConfig{
InstanceName: c.Args().First(),
ImageName: c.String("i"),
Hypervisor: c.String("p"),
Verbose: c.Bool("v"),
Memory: c.String("m"),
Cpus: c.Int("c"),
Networking: c.String("n"),
Bridge: c.String("b"),
NatRules: nat.Parse(c.StringSlice("f")),
GCEUploadDir: c.String("gce-upload-dir"),
MAC: c.String("mac"),
}
if !isValidHypervisor(config.Hypervisor) {
fmt.Printf("error: '%s' is not a supported hypervisor\n", config.Hypervisor)
return
}
err := cmd.Run(repo, config)
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "build",
Usage: "build an image",
Flags: []cli.Flag{
cli.StringFlag{Name: "p", Value: hypervisor.Default(), Usage: "hypervisor: qemu|vbox|vmw|gce"},
cli.StringFlag{Name: "m", Value: "512M", Usage: "memory size"},
cli.BoolFlag{Name: "v", Usage: "verbose mode"},
},
Action: func(c *cli.Context) {
imageName := c.Args().First()
if len(c.Args()) != 1 {
imageName = repo.DefaultImage()
}
if imageName == "" {
fmt.Println("usage: capstan build [image-name]")
return
}
hypervisor := c.String("p")
if !isValidHypervisor(hypervisor) {
fmt.Printf("error: '%s' is not a supported hypervisor\n", c.String("p"))
return
}
image := &core.Image{
Name: imageName,
Hypervisor: hypervisor,
}
template, err := core.ReadTemplateFile("Capstanfile")
if err != nil {
fmt.Println(err.Error())
return
}
if err := cmd.Build(repo, image, template, c.Bool("v"), c.String("m")); err != nil {
fmt.Println(err.Error())
return
}
},
},
{
Name: "images",
ShortName: "i",
Usage: "list images",
Action: func(c *cli.Context) {
repo.ListImages()
},
},
{
Name: "search",
Usage: "search a remote images",
Action: func(c *cli.Context) {
image := ""
if len(c.Args()) > 0 {
image = c.Args()[0]
}
util.ListImagesRemote(image)
},
},
{
Name: "instances",
ShortName: "I",
Usage: "list instances",
Action: func(c *cli.Context) {
cmd.Instances()
},
},
{
Name: "stop",
Usage: "stop an instance",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan stop [instance_name]")
return
}
instance := c.Args()[0]
cmd.Stop(instance)
},
},
{
Name: "delete",
Usage: "delete an instance",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan delete [instance_name]")
return
}
instance := c.Args()[0]
cmd.Delete(instance)
},
},
}
app.Run(os.Args)
}
func main() {
repo := util.NewRepo()
app := cli.NewApp()
app.Name = "capstan"
app.Version = VERSION
app.Usage = "pack, ship, and run applications in light-weight VMs"
app.Commands = []cli.Command{
{
Name: "info",
Usage: "show disk image information",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan info [image-file]")
return
}
image := c.Args()[0]
cmd.Info(image)
},
},
{
Name: "push",
Usage: "push an image to a repository",
Action: func(c *cli.Context) {
if len(c.Args()) != 2 {
fmt.Println("usage: capstan push [image-name] [image-file]")
return
}
err := repo.PushImage(c.Args()[0], c.Args()[1])
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "pull",
Usage: "pull an image from a repository",
Flags: []cli.Flag{
cli.StringFlag{"p", hypervisor.Default(), "hypervisor"},
},
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan pull [image-name]")
return
}
err := cmd.Pull(repo, c.String("p"), c.Args().First())
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "rmi",
Usage: "delete an image from a repository",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan rmi [image-name]")
return
}
err := repo.RemoveImage(c.Args().First())
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "run",
Usage: "launch a VM. You may pass the image name as the first argument.",
Flags: []cli.Flag{
cli.StringFlag{"i", "", "image_name"},
cli.StringFlag{"p", hypervisor.Default(), "hypervisor: qemu|vbox|vmw|gce"},
cli.StringFlag{"m", "1G", "memory size"},
cli.IntFlag{"c", 2, "number of CPUs"},
cli.StringFlag{"n", "nat", "networking: nat|bridge"},
cli.BoolFlag{"v", "verbose mode"},
cli.StringFlag{"b", "", "networking bridge: e.g., virbr0, vboxnet0"},
cli.StringSliceFlag{"f", new(cli.StringSlice), "port forwarding rules"},
cli.StringFlag{"gce-upload-dir", "", "Directory to upload local image to: e.g., gs://osvimg"},
},
Action: func(c *cli.Context) {
config := &cmd.RunConfig{
InstanceName: c.Args().First(),
ImageName: c.String("i"),
Hypervisor: c.String("p"),
Verbose: c.Bool("v"),
Memory: c.String("m"),
Cpus: c.Int("c"),
Networking: c.String("n"),
Bridge: c.String("b"),
NatRules: nat.Parse(c.StringSlice("f")),
GCEUploadDir: c.String("gce-upload-dir"),
}
err := cmd.Run(repo, config)
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "build",
Usage: "build an image",
Flags: []cli.Flag{
cli.StringFlag{"p", hypervisor.Default(), "hypervisor"},
cli.BoolFlag{"v", "verbose mode"},
},
Action: func(c *cli.Context) {
image := c.Args().First()
if len(c.Args()) != 1 {
image = repo.DefaultImage()
}
if image == "" {
fmt.Println("usage: capstan build [image-name]")
return
}
hypervisor := c.String("p")
err := cmd.Build(repo, hypervisor, image, c.Bool("v"))
if err != nil {
fmt.Println(err.Error())
}
},
},
{
Name: "images",
ShortName: "i",
Usage: "list images",
Action: func(c *cli.Context) {
repo.ListImages()
},
},
{
Name: "search",
Usage: "search a remote images",
Action: func(c *cli.Context) {
image := ""
if len(c.Args()) > 0 {
image = c.Args()[0]
}
util.ListImagesRemote(image)
},
},
{
Name: "instances",
ShortName: "I",
Usage: "list instances",
Action: func(c *cli.Context) {
cmd.Instances()
},
},
{
Name: "stop",
Usage: "stop an instance",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan stop [instance_name]")
return
}
instance := c.Args()[0]
cmd.Stop(instance)
},
},
{
Name: "delete",
Usage: "delete an instance",
Action: func(c *cli.Context) {
if len(c.Args()) != 1 {
fmt.Println("usage: capstan delete [instance_name]")
return
}
instance := c.Args()[0]
cmd.Delete(instance)
},
},
}
app.Run(os.Args)
}