|
| 1 | +package hyperkit |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "os" |
| 6 | + "path/filepath" |
| 7 | + "syscall" |
| 8 | + "time" |
| 9 | + |
| 10 | + "github.com/docker/machine/libmachine/drivers" |
| 11 | + "github.com/docker/machine/libmachine/log" |
| 12 | + "github.com/docker/machine/libmachine/mcnflag" |
| 13 | + "github.com/docker/machine/libmachine/mcnutils" |
| 14 | + "github.com/docker/machine/libmachine/ssh" |
| 15 | + "github.com/docker/machine/libmachine/state" |
| 16 | + hyperkit "github.com/moby/hyperkit/go" |
| 17 | + "github.com/pborman/uuid" |
| 18 | + vmnet "github.com/zchee/go-vmnet" |
| 19 | + commonutil "k8s.io/minikube/pkg/util" |
| 20 | +) |
| 21 | + |
| 22 | +const ( |
| 23 | + isoFilename = "boot2docker.iso" |
| 24 | +) |
| 25 | + |
| 26 | +type Driver struct { |
| 27 | + *drivers.BaseDriver |
| 28 | + Boot2DockerURL string |
| 29 | + DiskSize int |
| 30 | + Pid int |
| 31 | + CPU int |
| 32 | + Memory int |
| 33 | + Cmdline string |
| 34 | +} |
| 35 | + |
| 36 | +func NewDriver(hostName, storePath string) *Driver { |
| 37 | + return &Driver{ |
| 38 | + BaseDriver: &drivers.BaseDriver{ |
| 39 | + SSHUser: "docker", |
| 40 | + }, |
| 41 | + } |
| 42 | +} |
| 43 | + |
| 44 | +func (d *Driver) Create() error { |
| 45 | + b2dutils := mcnutils.NewB2dUtils(d.StorePath) |
| 46 | + |
| 47 | + if err := ssh.GenerateSSHKey(d.GetSSHKeyPath()); err != nil { |
| 48 | + return err |
| 49 | + } |
| 50 | + |
| 51 | + if err := b2dutils.CopyIsoToMachineDir(d.Boot2DockerURL, d.MachineName); err != nil { |
| 52 | + return err |
| 53 | + } |
| 54 | + isoPath := d.ResolveStorePath(isoFilename) |
| 55 | + if err := d.extractKernel(isoPath); err != nil { |
| 56 | + return err |
| 57 | + } |
| 58 | + |
| 59 | + return d.Start() |
| 60 | +} |
| 61 | + |
| 62 | +// DriverName returns the name of the driver |
| 63 | +func (d *Driver) DriverName() string { |
| 64 | + return "hyperkit" |
| 65 | +} |
| 66 | + |
| 67 | +// GetCreateFlags returns the mcnflag.Flag slice representing the flags |
| 68 | +// that can be set, their descriptions and defaults. |
| 69 | +func (d *Driver) GetCreateFlags() []mcnflag.Flag { |
| 70 | + return nil |
| 71 | +} |
| 72 | + |
| 73 | +// GetSSHHostname returns hostname for use with ssh |
| 74 | +func (d *Driver) GetSSHHostname() (string, error) { |
| 75 | + return d.IPAddress, nil |
| 76 | +} |
| 77 | + |
| 78 | +// GetURL returns a Docker compatible host URL for connecting to this host |
| 79 | +// e.g. tcp://1.2.3.4:2376 |
| 80 | +func (d *Driver) GetURL() (string, error) { |
| 81 | + ip, err := d.GetIP() |
| 82 | + if err != nil { |
| 83 | + return "", err |
| 84 | + } |
| 85 | + return fmt.Sprintf("tcp://%s:2376", ip), nil |
| 86 | +} |
| 87 | + |
| 88 | +// GetState returns the state that the host is in (running, stopped, etc) |
| 89 | +func (d *Driver) GetState() (state.State, error) { |
| 90 | + if d.Pid == 0 { |
| 91 | + return state.Stopped, nil |
| 92 | + } |
| 93 | + p, err := os.FindProcess(d.Pid) |
| 94 | + if err != nil { |
| 95 | + return state.Error, err |
| 96 | + } |
| 97 | + if p == nil { |
| 98 | + return state.Stopped, nil |
| 99 | + } |
| 100 | + return state.Running, nil |
| 101 | +} |
| 102 | + |
| 103 | +// Kill stops a host forcefully |
| 104 | +func (d *Driver) Kill() error { |
| 105 | + return d.sendSignal(syscall.SIGKILL) |
| 106 | +} |
| 107 | + |
| 108 | +// PreCreateCheck allows for pre-create operations to make sure a driver is ready for creation |
| 109 | +func (d *Driver) PreCreateCheck() error { |
| 110 | + return nil |
| 111 | +} |
| 112 | + |
| 113 | +// Remove a host |
| 114 | +func (d *Driver) Remove() error { |
| 115 | + s, err := d.GetState() |
| 116 | + if err != nil || s == state.Error { |
| 117 | + log.Infof("Error checking machine status: %s, assuming it has been removed already", err) |
| 118 | + return nil |
| 119 | + } |
| 120 | + if s == state.Running { |
| 121 | + if err := d.Stop(); err != nil { |
| 122 | + return err |
| 123 | + } |
| 124 | + } |
| 125 | + return nil |
| 126 | +} |
| 127 | + |
| 128 | +// Restart a host. This may just call Stop(); Start() if the provider does not |
| 129 | +// have any special restart behaviour. |
| 130 | +func (d *Driver) Restart() error { |
| 131 | + for _, f := range []func() error{d.Stop, d.Start} { |
| 132 | + if err := f(); err != nil { |
| 133 | + return err |
| 134 | + } |
| 135 | + } |
| 136 | + return nil |
| 137 | +} |
| 138 | + |
| 139 | +// SetConfigFromFlags configures the driver with the object that was returned |
| 140 | +// by RegisterCreateFlags |
| 141 | +func (d *Driver) SetConfigFromFlags(opts drivers.DriverOptions) error { |
| 142 | + return nil |
| 143 | +} |
| 144 | + |
| 145 | +// Start a host |
| 146 | +func (d *Driver) Start() error { |
| 147 | + |
| 148 | + // TODO: handle the disk already existing. |
| 149 | + // TODO: handle different disk types. |
| 150 | + diskPath := filepath.Join(d.ResolveStorePath("."), d.MachineName+".rawdisk") |
| 151 | + if err := createDiskImage(d.publicSSHKeyPath(), diskPath, d.DiskSize); err != nil { |
| 152 | + return err |
| 153 | + } |
| 154 | + |
| 155 | + if err := fixPermissions(d.ResolveStorePath(".")); err != nil { |
| 156 | + return err |
| 157 | + } |
| 158 | + |
| 159 | + h, err := hyperkit.New("", "", filepath.Join(d.StorePath, "machines", d.MachineName)) |
| 160 | + if err != nil { |
| 161 | + return err |
| 162 | + } |
| 163 | + |
| 164 | + // TODO: handle the rest of our settings. |
| 165 | + h.Kernel = d.ResolveStorePath("bzimage") |
| 166 | + h.Initrd = d.ResolveStorePath("initrd") |
| 167 | + h.VMNet = true |
| 168 | + h.ISOImage = d.ResolveStorePath(isoFilename) |
| 169 | + h.Console = hyperkit.ConsoleFile |
| 170 | + h.CPUs = d.CPU |
| 171 | + h.Memory = d.Memory |
| 172 | + |
| 173 | + // Set UUID |
| 174 | + h.UUID = uuid.NewUUID().String() |
| 175 | + log.Infof("Generated UUID %s", h.UUID) |
| 176 | + mac, err := vmnet.GetMACAddressFromUUID(h.UUID) |
| 177 | + if err != nil { |
| 178 | + return err |
| 179 | + } |
| 180 | + |
| 181 | + // Need to strip 0's |
| 182 | + mac = trimMacAddress(mac) |
| 183 | + log.Infof("Generated MAC %s", mac) |
| 184 | + |
| 185 | + h.Disks = []hyperkit.DiskConfig{ |
| 186 | + { |
| 187 | + Path: diskPath, |
| 188 | + Size: d.DiskSize, |
| 189 | + Driver: "virtio-blk", |
| 190 | + }, |
| 191 | + } |
| 192 | + log.Infof("Starting with cmdline: %s", d.Cmdline) |
| 193 | + if err := h.Start(d.Cmdline); err != nil { |
| 194 | + return err |
| 195 | + } |
| 196 | + |
| 197 | + d.Pid = h.Pid |
| 198 | + |
| 199 | + getIP := func() error { |
| 200 | + var err error |
| 201 | + d.IPAddress, err = GetIPAddressByMACAddress(mac) |
| 202 | + if err != nil { |
| 203 | + return &commonutil.RetriableError{Err: err} |
| 204 | + } |
| 205 | + return nil |
| 206 | + } |
| 207 | + |
| 208 | + if err := commonutil.RetryAfter(30, getIP, 2*time.Second); err != nil { |
| 209 | + return fmt.Errorf("IP address never found in dhcp leases file %v", err) |
| 210 | + } |
| 211 | + return nil |
| 212 | +} |
| 213 | + |
| 214 | +// Stop a host gracefully |
| 215 | +func (d *Driver) Stop() error { |
| 216 | + return d.sendSignal(syscall.SIGTERM) |
| 217 | +} |
| 218 | + |
| 219 | +func (d *Driver) extractKernel(isoPath string) error { |
| 220 | + for _, f := range []struct { |
| 221 | + pathInIso string |
| 222 | + destPath string |
| 223 | + }{ |
| 224 | + {"/boot/bzimage", "bzimage"}, |
| 225 | + {"/boot/initrd", "initrd"}, |
| 226 | + {"/isolinux/isolinux.cfg", "isolinux.cfg"}, |
| 227 | + } { |
| 228 | + fullDestPath := d.ResolveStorePath(f.destPath) |
| 229 | + if err := ExtractFile(isoPath, f.pathInIso, fullDestPath); err != nil { |
| 230 | + return err |
| 231 | + } |
| 232 | + } |
| 233 | + return nil |
| 234 | +} |
| 235 | + |
| 236 | +func (d *Driver) publicSSHKeyPath() string { |
| 237 | + return d.GetSSHKeyPath() + ".pub" |
| 238 | +} |
| 239 | + |
| 240 | +func (d *Driver) sendSignal(s os.Signal) error { |
| 241 | + proc, err := os.FindProcess(d.Pid) |
| 242 | + if err != nil { |
| 243 | + return err |
| 244 | + } |
| 245 | + |
| 246 | + return proc.Signal(s) |
| 247 | +} |
0 commit comments