// DeviceScanType gets the configured device scan type.
func DeviceScanType(config gofig.Config) types.DeviceScanType {
return types.ParseDeviceScanType(config.GetInt(types.ConfigDeviceScanType))
}
// Run runs the executor CLI.
func Run() {
args := os.Args
if len(args) < 3 {
printUsageAndExit()
}
d, err := registry.NewStorageExecutor(args[1])
if err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
os.Exit(1)
}
driverName := strings.ToLower(d.Name())
config, err := apiconfig.NewConfig()
if err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
os.Exit(1)
}
apiconfig.UpdateLogLevel(config)
ctx := context.Background()
if err := d.Init(ctx, config); err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
os.Exit(1)
}
cmd := cmdRx.FindString(args[2])
if cmd == "" {
printUsageAndExit()
}
store := utils.NewStore()
var (
result interface{}
op string
exitCode int
)
if strings.EqualFold(cmd, apitypes.LSXCmdSupported) {
op = "supported"
if dws, ok := d.(apitypes.StorageExecutorWithSupported); ok {
opResult, opErr := dws.Supported(ctx, store)
if opErr != nil {
err = opErr
} else {
result = opResult
}
} else {
err = apitypes.ErrNotImplemented
}
} else if strings.EqualFold(cmd, apitypes.LSXCmdInstanceID) {
op = "instance ID"
opResult, opErr := d.InstanceID(ctx, store)
if opErr != nil {
err = opErr
} else {
opResult.Driver = driverName
result = opResult
}
} else if strings.EqualFold(cmd, apitypes.LSXCmdNextDevice) {
op = "next device"
opResult, opErr := d.NextDevice(ctx, store)
if opErr != nil && opErr != apitypes.ErrNotImplemented {
err = opErr
} else {
result = opResult
}
} else if strings.EqualFold(cmd, apitypes.LSXCmdLocalDevices) {
if len(args) < 4 {
printUsageAndExit()
}
op = "local devices"
opResult, opErr := d.LocalDevices(ctx, &apitypes.LocalDevicesOpts{
ScanType: apitypes.ParseDeviceScanType(args[3]),
Opts: store,
})
opResult.Driver = driverName
if opErr != nil {
err = opErr
} else {
result = opResult
}
} else if strings.EqualFold(cmd, apitypes.LSXCmdWaitForDevice) {
if len(args) < 5 {
printUsageAndExit()
}
op = "wait"
opts := &apitypes.WaitForDeviceOpts{
LocalDevicesOpts: apitypes.LocalDevicesOpts{
ScanType: apitypes.ParseDeviceScanType(args[3]),
Opts: store,
},
Token: strings.ToLower(args[4]),
Timeout: utils.DeviceAttachTimeout(args[5]),
}
ldl := func() (bool, *apitypes.LocalDevices, error) {
ldm, err := d.LocalDevices(ctx, &opts.LocalDevicesOpts)
if err != nil {
return false, nil, err
}
for k := range ldm.DeviceMap {
if strings.ToLower(k) == opts.Token {
return true, ldm, nil
}
}
return false, ldm, nil
}
var (
found bool
opErr error
opResult *apitypes.LocalDevices
timeoutC = time.After(opts.Timeout)
tick = time.Tick(500 * time.Millisecond)
)
TimeoutLoop:
for {
select {
case <-timeoutC:
exitCode = apitypes.LSXExitCodeTimedOut
break TimeoutLoop
case <-tick:
if found, opResult, opErr = ldl(); found || opErr != nil {
break TimeoutLoop
}
}
}
if opErr != nil {
err = opErr
} else {
opResult.Driver = driverName
result = opResult
}
}
if err != nil {
// if the function is not implemented then exit with
// apitypes.LSXExitCodeNotImplemented to let callers
// know that the function is unsupported on this system
exitCode = 1
if strings.EqualFold(err.Error(), apitypes.ErrNotImplemented.Error()) {
exitCode = apitypes.LSXExitCodeNotImplemented
}
fmt.Fprintf(os.Stderr,
"error: error getting %s: %v\n", op, err)
os.Exit(exitCode)
}
switch tr := result.(type) {
case bool:
fmt.Fprintf(os.Stdout, "%v", result)
case string:
fmt.Fprintln(os.Stdout, result)
case encoding.TextMarshaler:
buf, err := tr.MarshalText()
if err != nil {
fmt.Fprintf(os.Stderr, "error: error encoding %s: %v\n", op, err)
os.Exit(1)
}
os.Stdout.Write(buf)
default:
buf, err := json.Marshal(result)
if err != nil {
fmt.Fprintf(os.Stderr, "error: error encoding %s: %v\n", op, err)
os.Exit(1)
}
if isNullBuf(buf) {
os.Stdout.Write(emptyJSONBuff)
} else {
os.Stdout.Write(buf)
}
}
os.Exit(exitCode)
}