Merge pull request #9781 from baude/addqemu

introduce podman machine

7 files changed, 391 insertions, 0 deletions

diff --git a/cmd/podman/machine/create.go b/cmd/podman/machine/create.go
new file mode 100644
index 000000000..1da34327a
--- /dev/null
+++ b/cmd/podman/machine/create.go
@@ -0,0 +1,99 @@
+// +build amd64,linux amd64,darwin arm64,darwin
+
+package machine
+
+import (
+	"github.com/containers/common/pkg/completion"
+	"github.com/containers/podman/v3/cmd/podman/registry"
+	"github.com/containers/podman/v3/pkg/domain/entities"
+	"github.com/containers/podman/v3/pkg/machine"
+	"github.com/containers/podman/v3/pkg/machine/qemu"
+	"github.com/spf13/cobra"
+)
+
+var (
+	createCmd = &cobra.Command{
+		Use:               "create [options] [NAME]",
+		Short:             "Create a vm",
+		Long:              "Create a virtual machine for Podman to run on. Virtual machines are used to run Podman.",
+		RunE:              create,
+		Args:              cobra.MaximumNArgs(1),
+		Example:           `podman machine create myvm`,
+		ValidArgsFunction: completion.AutocompleteNone,
+	}
+)
+
+type CreateCLIOptions struct {
+	CPUS         uint64
+	Memory       uint64
+	Devices      []string
+	ImagePath    string
+	IgnitionPath string
+	Name         string
+}
+
+var (
+	createOpts                = CreateCLIOptions{}
+	defaultMachineName string = "podman-machine-default"
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: createCmd,
+		Parent:  machineCmd,
+	})
+	flags := createCmd.Flags()
+
+	cpusFlagName := "cpus"
+	flags.Uint64Var(
+		&createOpts.CPUS,
+		cpusFlagName, 1,
+		"Number of CPUs. The default is 0.000 which means no limit",
+	)
+	_ = createCmd.RegisterFlagCompletionFunc(cpusFlagName, completion.AutocompleteNone)
+
+	memoryFlagName := "memory"
+	flags.Uint64VarP(
+		&createOpts.Memory,
+		memoryFlagName, "m", 2048,
+		"Memory (in MB)",
+	)
+	_ = createCmd.RegisterFlagCompletionFunc(memoryFlagName, completion.AutocompleteNone)
+
+	ImagePathFlagName := "image-path"
+	flags.StringVar(&createOpts.ImagePath, ImagePathFlagName, "", "Path to qcow image")
+	_ = createCmd.RegisterFlagCompletionFunc(ImagePathFlagName, completion.AutocompleteDefault)
+
+	IgnitionPathFlagName := "ignition-path"
+	flags.StringVar(&createOpts.IgnitionPath, IgnitionPathFlagName, "", "Path to ignition file")
+	_ = createCmd.RegisterFlagCompletionFunc(IgnitionPathFlagName, completion.AutocompleteDefault)
+}
+
+// TODO should we allow for a users to append to the qemu cmdline?
+func create(cmd *cobra.Command, args []string) error {
+	createOpts.Name = defaultMachineName
+	if len(args) > 0 {
+		createOpts.Name = args[0]
+	}
+	vmOpts := machine.CreateOptions{
+		CPUS:         createOpts.CPUS,
+		Memory:       createOpts.Memory,
+		IgnitionPath: createOpts.IgnitionPath,
+		ImagePath:    createOpts.ImagePath,
+		Name:         createOpts.Name,
+	}
+	var (
+		vm     machine.VM
+		vmType string
+		err    error
+	)
+	switch vmType {
+	default: // qemu is the default
+		vm, err = qemu.NewMachine(vmOpts)
+	}
+	if err != nil {
+		return err
+	}
+	return vm.Create(vmOpts)
+}
diff --git a/cmd/podman/machine/machine.go b/cmd/podman/machine/machine.go
new file mode 100644
index 000000000..ed284ee10
--- /dev/null
+++ b/cmd/podman/machine/machine.go
@@ -0,0 +1,32 @@
+// +build amd64,linux amd64,darwin arm64,darwin
+
+package machine
+
+import (
+	"github.com/containers/podman/v3/cmd/podman/registry"
+	"github.com/containers/podman/v3/cmd/podman/validate"
+	"github.com/containers/podman/v3/pkg/domain/entities"
+	"github.com/spf13/cobra"
+)
+
+var (
+	noOp = func(cmd *cobra.Command, args []string) error {
+		return nil
+	}
+	// Command: podman _machine_
+	machineCmd = &cobra.Command{
+		Use:                "machine",
+		Short:              "Manage a virtual machine",
+		Long:               "Manage a virtual machine. Virtual machines are used to run Podman.",
+		PersistentPreRunE:  noOp,
+		PersistentPostRunE: noOp,
+		RunE:               validate.SubCommandExists,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: machineCmd,
+	})
+}
diff --git a/cmd/podman/machine/machine_unsupported.go b/cmd/podman/machine/machine_unsupported.go
new file mode 100644
index 000000000..cb1636419
--- /dev/null
+++ b/cmd/podman/machine/machine_unsupported.go
@@ -0,0 +1,5 @@
+// +build !amd64 arm64,linux amd64,windows
+
+package machine
+
+func init() {}
diff --git a/cmd/podman/machine/remove.go b/cmd/podman/machine/remove.go
new file mode 100644
index 000000000..f6ce9e326
--- /dev/null
+++ b/cmd/podman/machine/remove.go
@@ -0,0 +1,88 @@
+// +build amd64,linux amd64,darwin arm64,darwin
+
+package machine
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/containers/common/pkg/completion"
+	"github.com/containers/podman/v3/cmd/podman/registry"
+	"github.com/containers/podman/v3/pkg/domain/entities"
+	"github.com/containers/podman/v3/pkg/machine"
+	"github.com/containers/podman/v3/pkg/machine/qemu"
+	"github.com/spf13/cobra"
+)
+
+var (
+	removeCmd = &cobra.Command{
+		Use:               "remove [options] NAME",
+		Short:             "Remove an existing machine",
+		Long:              "Remove an existing machine ",
+		RunE:              remove,
+		Args:              cobra.ExactArgs(1),
+		Example:           `podman machine remove myvm`,
+		ValidArgsFunction: completion.AutocompleteNone,
+	}
+)
+
+var (
+	destoryOptions machine.RemoveOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: removeCmd,
+		Parent:  machineCmd,
+	})
+
+	flags := removeCmd.Flags()
+	formatFlagName := "force"
+	flags.BoolVar(&destoryOptions.Force, formatFlagName, false, "Do not prompt before removeing")
+
+	keysFlagName := "save-keys"
+	flags.BoolVar(&destoryOptions.SaveKeys, keysFlagName, false, "Do not delete SSH keys")
+
+	ignitionFlagName := "save-ignition"
+	flags.BoolVar(&destoryOptions.SaveIgnition, ignitionFlagName, false, "Do not delete ignition file")
+
+	imageFlagName := "save-image"
+	flags.BoolVar(&destoryOptions.SaveImage, imageFlagName, false, "Do not delete the image file")
+}
+
+func remove(cmd *cobra.Command, args []string) error {
+	var (
+		err    error
+		vm     machine.VM
+		vmType string
+	)
+	switch vmType {
+	default:
+		vm, err = qemu.LoadVMByName(args[0])
+	}
+	if err != nil {
+		return err
+	}
+	confirmationMessage, doIt, err := vm.Remove(args[0], machine.RemoveOptions{})
+	if err != nil {
+		return err
+	}
+
+	if !destoryOptions.Force {
+		// Warn user
+		fmt.Println(confirmationMessage)
+		reader := bufio.NewReader(os.Stdin)
+		fmt.Print("Are you sure you want to continue? [y/N] ")
+		answer, err := reader.ReadString('\n')
+		if err != nil {
+			return err
+		}
+		if strings.ToLower(answer)[0] != 'y' {
+			return nil
+		}
+	}
+	return doIt()
+}
diff --git a/cmd/podman/machine/ssh.go b/cmd/podman/machine/ssh.go
new file mode 100644
index 000000000..a7111a195
--- /dev/null
+++ b/cmd/podman/machine/ssh.go
@@ -0,0 +1,70 @@
+// +build amd64,linux amd64,darwin arm64,darwin
+
+package machine
+
+import (
+	"github.com/containers/podman/v3/cmd/podman/common"
+	"github.com/containers/podman/v3/cmd/podman/registry"
+	"github.com/containers/podman/v3/pkg/domain/entities"
+	"github.com/containers/podman/v3/pkg/machine"
+	"github.com/containers/podman/v3/pkg/machine/qemu"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	sshCmd = &cobra.Command{
+		Use:   "ssh [options] NAME [COMMAND [ARG ...]]",
+		Short: "SSH into a virtual machine",
+		Long:  "SSH into a virtual machine ",
+		RunE:  ssh,
+		Args:  cobra.MinimumNArgs(1),
+		Example: `podman machine ssh myvm
+  podman machine ssh -e  myvm echo hello`,
+
+		ValidArgsFunction: common.AutocompleteMachineSSH,
+	}
+)
+
+var (
+	sshOpts machine.SSHOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: sshCmd,
+		Parent:  machineCmd,
+	})
+
+	flags := sshCmd.Flags()
+	executeFlagName := "execute"
+	flags.BoolVarP(&sshOpts.Execute, executeFlagName, "e", false, "Execute command from args")
+}
+
+func ssh(cmd *cobra.Command, args []string) error {
+	var (
+		err    error
+		vm     machine.VM
+		vmType string
+	)
+	sshOpts.Args = args[1:]
+
+	// Error if no execute but args given
+	if !sshOpts.Execute && len(sshOpts.Args) > 0 {
+		return errors.New("too many args: to execute commands via ssh, use -e flag")
+	}
+	// Error if execute but no args given
+	if sshOpts.Execute && len(sshOpts.Args) < 1 {
+		return errors.New("must proivde at least one command to execute")
+	}
+
+	switch vmType {
+	default:
+		vm, err = qemu.LoadVMByName(args[0])
+	}
+	if err != nil {
+		return errors.Wrapf(err, "vm %s not found", args[0])
+	}
+	return vm.SSH(args[0], sshOpts)
+}
diff --git a/cmd/podman/machine/start.go b/cmd/podman/machine/start.go
new file mode 100644
index 000000000..44ade2850
--- /dev/null
+++ b/cmd/podman/machine/start.go
@@ -0,0 +1,48 @@
+// +build amd64,linux amd64,darwin arm64,darwin
+
+package machine
+
+import (
+	"github.com/containers/common/pkg/completion"
+	"github.com/containers/podman/v3/cmd/podman/registry"
+	"github.com/containers/podman/v3/pkg/domain/entities"
+	"github.com/containers/podman/v3/pkg/machine"
+	"github.com/containers/podman/v3/pkg/machine/qemu"
+	"github.com/spf13/cobra"
+)
+
+var (
+	startCmd = &cobra.Command{
+		Use:               "start NAME",
+		Short:             "Start an existing machine",
+		Long:              "Start an existing machine ",
+		RunE:              start,
+		Args:              cobra.ExactArgs(1),
+		Example:           `podman machine start myvm`,
+		ValidArgsFunction: completion.AutocompleteNone,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: startCmd,
+		Parent:  machineCmd,
+	})
+}
+
+func start(cmd *cobra.Command, args []string) error {
+	var (
+		err    error
+		vm     machine.VM
+		vmType string
+	)
+	switch vmType {
+	default:
+		vm, err = qemu.LoadVMByName(args[0])
+	}
+	if err != nil {
+		return err
+	}
+	return vm.Start(args[0], machine.StartOptions{})
+}
diff --git a/cmd/podman/machine/stop.go b/cmd/podman/machine/stop.go
new file mode 100644
index 000000000..35fd4ff95
--- /dev/null
+++ b/cmd/podman/machine/stop.go
@@ -0,0 +1,49 @@
+// +build amd64,linux amd64,darwin arm64,darwin
+
+package machine
+
+import (
+	"github.com/containers/common/pkg/completion"
+	"github.com/containers/podman/v3/cmd/podman/registry"
+	"github.com/containers/podman/v3/pkg/domain/entities"
+	"github.com/containers/podman/v3/pkg/machine"
+	"github.com/containers/podman/v3/pkg/machine/qemu"
+	"github.com/spf13/cobra"
+)
+
+var (
+	stopCmd = &cobra.Command{
+		Use:               "stop NAME",
+		Short:             "Stop an existing machine",
+		Long:              "Stop an existing machine ",
+		RunE:              stop,
+		Args:              cobra.ExactArgs(1),
+		Example:           `podman machine stop myvm`,
+		ValidArgsFunction: completion.AutocompleteNone,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: stopCmd,
+		Parent:  machineCmd,
+	})
+}
+
+// TODO  Name shouldnt be required, need to create a default vm
+func stop(cmd *cobra.Command, args []string) error {
+	var (
+		err    error
+		vm     machine.VM
+		vmType string
+	)
+	switch vmType {
+	default:
+		vm, err = qemu.LoadVMByName(args[0])
+	}
+	if err != nil {
+		return err
+	}
+	return vm.Stop(args[0], machine.StopOptions{})
+}