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Add sample app initing/starting a podman-machine VM
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,15 +1,200 @@ | ||
| package main | ||
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| import ( | ||
| "errors" | ||
| "fmt" | ||
| "log/slog" | ||
| "os" | ||
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| "github.com/crc-org/macadam/pkg/cmdline" | ||
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| _ "github.com/containers/podman/v5/pkg/machine" | ||
| "github.com/containers/common/pkg/config" | ||
| ldefine "github.com/containers/podman/v5/libpod/define" | ||
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| "github.com/containers/podman/v5/pkg/machine" | ||
| "github.com/containers/podman/v5/pkg/machine/define" | ||
| "github.com/containers/podman/v5/pkg/machine/env" | ||
| provider2 "github.com/containers/podman/v5/pkg/machine/provider" | ||
| "github.com/containers/podman/v5/pkg/machine/shim" | ||
| "github.com/containers/podman/v5/pkg/machine/vmconfigs" | ||
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| _ "github.com/spf13/cobra" | ||
| ) | ||
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| var ( | ||
| initOpts = define.InitOptions{} | ||
| defaultMachineName = machine.DefaultMachineName | ||
| ) | ||
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| type PodmanMachine struct { | ||
| initOpts define.InitOptions | ||
| provider vmconfigs.VMProvider | ||
| config *vmconfigs.MachineConfig | ||
| } | ||
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| func startMachine(m *PodmanMachine) error { | ||
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| machineName := m.config.Name | ||
| dirs, err := env.GetMachineDirs(m.provider.VMType()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| /* | ||
| mc, err := vmconfigs.LoadMachineByName(machineName, dirs) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| */ | ||
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| fmt.Printf("Starting machine %q\n", machineName) | ||
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| startOpts := machine.StartOptions{ | ||
| NoInfo: false, | ||
| Quiet: false, | ||
| } | ||
| if err := shim.Start(m.config, m.provider, dirs, startOpts); err != nil { | ||
| return err | ||
| } | ||
| fmt.Printf("Machine %q started successfully\n", machineName) | ||
| //newMachineEvent(events.Start, events.Event{Name: vmName}) | ||
| return nil | ||
| } | ||
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| func initMachine(initOpts define.InitOptions) (*PodmanMachine, error) { | ||
| machine := PodmanMachine{} | ||
| provider, err := provider2.Get() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| machine.provider = provider | ||
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| // The vmtype names need to be reserved and cannot be used for podman machine names | ||
| if _, err := define.ParseVMType(initOpts.Name, define.UnknownVirt); err == nil { | ||
| return nil, fmt.Errorf("cannot use %q for a machine name", initOpts.Name) | ||
| } | ||
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| if !ldefine.NameRegex.MatchString(initOpts.Username) { | ||
| return nil, fmt.Errorf("invalid username %q: %w", initOpts.Username, ldefine.RegexError) | ||
| } | ||
|
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| // Check if machine already exists | ||
| vmConfig, exists, err := shim.VMExists(initOpts.Name, []vmconfigs.VMProvider{provider}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| machine.config = vmConfig | ||
|
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| // machine exists, return error | ||
| if exists { | ||
| return &machine, fmt.Errorf("%s: %w", initOpts.Name, define.ErrVMAlreadyExists) | ||
| } | ||
|
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| /* | ||
| // check if a system connection already exists | ||
| cons, err := registry.PodmanConfig().ContainersConfDefaultsRO.GetAllConnections() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| for _, con := range cons { | ||
| if con.ReadWrite { | ||
| for _, connection := range []string{initOpts.Name, fmt.Sprintf("%s-root", initOpts.Name)} { | ||
| if con.Name == connection { | ||
| return fmt.Errorf("system connection %q already exists. consider a different machine name or remove the connection with `podman system connection rm`", connection) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| */ | ||
|
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| for idx, vol := range initOpts.Volumes { | ||
| initOpts.Volumes[idx] = os.ExpandEnv(vol) | ||
| } | ||
|
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| // TODO need to work this back in | ||
| // if finished, err := vm.Init(initOpts); err != nil || !finished { | ||
| // // Finished = true, err = nil - Success! Log a message with further instructions | ||
| // // Finished = false, err = nil - The installation is partially complete and podman should | ||
| // // exit gracefully with no error and no success message. | ||
| // // Examples: | ||
| // // - a user has chosen to perform their own reboot | ||
| // // - reexec for limited admin operations, returning to parent | ||
| // // Finished = *, err != nil - Exit with an error message | ||
| // return err | ||
| // } | ||
|
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| err = shim.Init(initOpts, provider) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| /* | ||
| newMachineEvent(events.Init, events.Event{Name: initOpts.Name}) | ||
| */ | ||
| fmt.Println("Machine init complete") | ||
|
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| vmConfig, exists, err = shim.VMExists(initOpts.Name, []vmconfigs.VMProvider{provider}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| machine.config = vmConfig | ||
|
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| /* | ||
| now := false | ||
| if now { | ||
| return startMachine(initOpts.Name, provider) | ||
| } | ||
| */ | ||
| extra := "" | ||
|
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| if initOpts.Name != defaultMachineName { | ||
| extra = " " + initOpts.Name | ||
| } | ||
| fmt.Printf("To start your machine run:\n\n\tpodman machine start%s\n\n", extra) | ||
| return &machine, err | ||
| } | ||
|
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| func main() { | ||
| slog.Info(fmt.Sprintf("macadam version %s", cmdline.Version())) | ||
|
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| defaultConfig, err := config.New(&config.Options{ | ||
| SetDefault: true, // This makes sure that following calls to config.Default() return this config | ||
| }) | ||
| if err != nil { | ||
| os.Exit(1) | ||
| } | ||
|
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| // defaults from cmd/podman/machine/init.go | ||
| initOpts.Name = defaultMachineName | ||
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| initOpts.CPUS = defaultConfig.Machine.CPUs | ||
| initOpts.DiskSize = defaultConfig.Machine.DiskSize | ||
| initOpts.Memory = defaultConfig.Machine.Memory | ||
| defaultTz := defaultConfig.TZ() | ||
| if len(defaultTz) < 1 { | ||
| defaultTz = "local" | ||
| } | ||
| initOpts.TimeZone = defaultTz | ||
| initOpts.ReExec = false | ||
| initOpts.Username = defaultConfig.Machine.User | ||
| initOpts.Image = defaultConfig.Machine.Image | ||
| initOpts.Volumes = defaultConfig.Machine.Volumes.Get() | ||
| initOpts.USBs = []string{} | ||
| initOpts.VolumeDriver = "" | ||
| initOpts.IgnitionPath = "" | ||
| initOpts.Rootful = false | ||
| userModeNetworking := false | ||
| initOpts.UserModeNetworking = &userModeNetworking | ||
| // user-mode networking | ||
|
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| machine, err := initMachine(initOpts) | ||
| if err != nil && !errors.Is(err, define.ErrVMAlreadyExists) { | ||
| slog.Error(err.Error()) | ||
| } | ||
| if err := startMachine(machine); err != nil { | ||
| slog.Error(err.Error()) | ||
| } | ||
| /* | ||
| if err != nil || errors.Is(err, define.ErrVMAlreadyExists) | ||
| { | ||
| */ | ||
| } |
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