func getManifestData(dataType, manifestFile string) string {
// This is where Yocto stores buid information
manifest, err := os.Open(manifestFile)
if err != nil {
log.Error("Can not read manifest data.")
return ""
}
scanner := bufio.NewScanner(manifest)
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
log.Debug("Read data from device manifest file: ", line)
if strings.HasPrefix(line, dataType) {
log.Debug("Found needed line: ", line)
lineID := strings.Split(line, "=")
if len(lineID) != 2 {
log.Errorf("Broken device manifest file: (%v)", lineID)
return ""
}
log.Debug("Current manifest data: ", strings.TrimSpace(lineID[1]))
return strings.TrimSpace(lineID[1])
}
}
if err := scanner.Err(); err != nil {
log.Error(err)
}
return ""
}
func processUpdateResponse(response *http.Response) (interface{}, error) {
log.Debug("Received response:", response.Status)
respBody, err := ioutil.ReadAll(response.Body)
if err != nil {
return nil, err
}
switch response.StatusCode {
case http.StatusOK:
log.Debug("Have update available")
var data UpdateResponse
if err := json.Unmarshal(respBody, &data); err != nil {
return nil, errors.Wrapf(err, "failed to parse response")
}
if err := validateGetUpdate(data); err != nil {
return nil, err
}
return data, nil
case http.StatusNoContent:
log.Debug("No update available")
return nil, nil
case http.StatusUnauthorized:
log.Warn("Client not authorized to get update schedule.")
return nil, ErrNotAuthorized
default:
return nil, errors.New("Invalid response received from server")
}
}
func (p *partitions) GetActive() (string, error) {
if p.active != "" {
log.Debug("Active partition: ", p.active)
return p.active, nil
}
return p.getAndCacheActivePartition(isMountedRoot, getAllMountedDevices)
}
func (p *partitions) GetInactive() (string, error) {
if p.inactive != "" {
log.Debug("Inactive partition: ", p.inactive)
return p.inactive, nil
}
return p.getAndCacheInactivePartition()
}
func getOrSetEnvironmentVariable(cmd *exec.Cmd) (BootVars, error) {
cmdReader, err := cmd.StdoutPipe()
if err != nil {
log.Errorln("Error creating StdoutPipe: ", err)
return nil, err
}
scanner := bufio.NewScanner(cmdReader)
err = cmd.Start()
if err != nil {
return nil, err
}
var env_variables = make(BootVars)
for scanner.Scan() {
log.Debug("Have U-Boot variable: ", scanner.Text())
splited_line := strings.Split(scanner.Text(), "=")
//we are having empty line (usually at the end of output)
if scanner.Text() == "" {
continue
}
//we have some malformed data or Warning/Error
if len(splited_line) != 2 {
log.Error("U-Boot variable malformed or error occured")
return nil, errors.New("Invalid U-Boot variable or error: " + scanner.Text())
}
env_variables[splited_line[0]] = splited_line[1]
}
err = cmd.Wait()
if err != nil {
return nil, err
}
if len(env_variables) > 0 {
log.Debug("List of U-Boot variables:", env_variables)
}
return env_variables, err
}
func (a *AuthorizedState) Handle(ctx *StateContext, c Controller) (State, bool) {
// restore previous state information
sd, err := LoadStateData(ctx.store)
// tricky part - try to figure out if there's an update in progress, if so
// proceed to UpdateCommitState; in case of errors that occur either now or
// when the update was being feched/installed previously, try to handle them
// gracefully
// handle easy case first, no update info present, means no update in progress
if err != nil && os.IsNotExist(err) {
log.Debug("no update in progress, proceed")
return inventoryUpdateState, false
}
if err != nil {
log.Errorf("failed to restore update information: %v", err)
me := NewFatalError(errors.Wrapf(err, "failed to restore update information"))
// report update error with unknown deployment ID
// TODO: fill current image ID?
return NewUpdateErrorState(me, client.UpdateResponse{
ID: "unknown",
}), false
}
log.Infof("handling state: %v", sd.Id)
// chack last known status
switch sd.Id {
// update process was finished; check what is the status of update
case MenderStateReboot:
return NewUpdateVerifyState(sd.UpdateInfo), false
// update prosess was initialized but stopped in the middle
case MenderStateUpdateFetch, MenderStateUpdateInstall:
// TODO: for now we just continue sending error report to the server
// in future we might want to have some recovery option here
me := NewFatalError(errors.New("update process was interrupted"))
return NewUpdateErrorState(me, sd.UpdateInfo), false
// there was some error while reporting update status
case MenderStateUpdateStatusReport:
log.Infof("restoring update status report state")
if sd.UpdateStatus != client.StatusFailure &&
sd.UpdateStatus != client.StatusSuccess {
return NewUpdateStatusReportState(sd.UpdateInfo, client.StatusError), false
}
// check what is exact state of update before reporting anything
return NewUpdateVerifyState(sd.UpdateInfo), false
// this should not happen
default:
log.Errorf("got invalid update state: %v", sd.Id)
me := NewFatalError(errors.New("got invalid update state"))
return NewUpdateErrorState(me, sd.UpdateInfo), false
}
}
// This will be run manually from command line ONLY
func doRootfs(device installer.UInstaller, args runOptionsType, dt string) error {
var image io.ReadCloser
var imageSize int64
var err error
var upclient client.Updater
if args == (runOptionsType{}) {
return errors.New("rootfs called without needed parameters")
}
log.Debug("Starting device update.")
updateLocation := *args.imageFile
if strings.HasPrefix(updateLocation, "http:") ||
strings.HasPrefix(updateLocation, "https:") {
log.Infof("Performing remote update from: [%s].", updateLocation)
var ac *client.ApiClient
// we are having remote update
ac, err = client.New(args.Config)
if err != nil {
return errors.New("Can not initialize client for performing network update.")
}
upclient = client.NewUpdate()
log.Debug("Client initialized. Start downloading image.")
image, imageSize, err = upclient.FetchUpdate(ac, updateLocation)
log.Debugf("Image downloaded: %d [%v] [%v]", imageSize, image, err)
} else {
// perform update from local file
log.Infof("Start updating from local image file: [%s]", updateLocation)
image, imageSize, err = FetchUpdateFromFile(updateLocation)
log.Debugf("Feting update from file results: [%v], %d, %v", image, imageSize, err)
}
if image == nil || err != nil {
return errors.Wrapf(err, "rootfs: error while updating image from command line")
}
defer image.Close()
return installer.Install(image, dt, device)
}
func (d *device) Rollback() error {
// first get inactive partition
inactivePartition, err := d.getInactivePartition()
if err != nil {
return err
}
log.Infof("setting partition for rollback: %s", inactivePartition)
err = d.WriteEnv(BootVars{"mender_boot_part": inactivePartition, "upgrade_available": "0"})
if err != nil {
return err
}
log.Debug("Marking inactive partition as a boot candidate successful.")
return nil
}
func (p *partitions) getAndCacheActivePartition(rootChecker func(StatCommander, string, *syscall.Stat_t) bool,
getMountedDevices func(string) ([]string, error)) (string, error) {
mountData, err := p.Command("mount").Output()
if err != nil {
return "", err
}
mountCandidate := getRootCandidateFromMount(mountData)
rootDevice := getRootDevice(p)
if rootDevice == nil {
return "", errors.New("Can not find root device")
}
// First check if mountCandidate matches rootDevice
if mountCandidate != "" {
if rootChecker(p, mountCandidate, rootDevice) {
p.active = mountCandidate
log.Debugf("Setting active partition from mount candidate: %s", p.active)
return p.active, nil
}
// If not see if we are lucky somewhere else
}
const devDir string = "/dev"
mountedDevices, err := getMountedDevices(devDir)
if err != nil {
return "", err
}
activePartition, err := getRootFromMountedDevices(p, rootChecker, mountedDevices, rootDevice)
if err != nil {
return "", err
}
bootEnvBootPart, err := getBootEnvActivePartition(p.BootEnvReadWriter)
if err != nil {
return "", err
}
if checkBootEnvAndRootPartitionMatch(bootEnvBootPart, activePartition) {
p.active = activePartition
log.Debug("Setting active partition: ", activePartition)
return p.active, nil
}
log.Error("Mounted root '" + activePartition + "' does not match boot environment mender_boot_part: " + bootEnvBootPart)
return "", ErrorNoMatchBootPartRootPart
}
func readConfigFile(config interface{}, fileName string) error {
log.Debug("Reading Mender configuration from file " + fileName)
conf, err := ioutil.ReadFile(fileName)
if err != nil {
return err
}
if err := json.Unmarshal(conf, &config); err != nil {
switch err.(type) {
case *json.SyntaxError:
return errors.New("Error parsing mender configuration file: " + err.Error())
}
return errors.New("Error parsing config file: " + err.Error())
}
return nil
}
func (usr *UpdateStatusReportState) Handle(ctx *StateContext, c Controller) (State, bool) {
// start deployment logging; no error checking
// we can do nothing here; either we will have the logs or not...
DeploymentLogger.Enable(usr.update.ID)
if err := StoreStateData(ctx.store, StateData{
Id: usr.Id(),
UpdateInfo: usr.update,
UpdateStatus: usr.status,
}); err != nil {
log.Errorf("failed to store state data in update status report state: %v",
err)
return NewReportErrorState(usr.update, usr.status), false
}
err, wasInterupted := usr.trySend(sendStatus, c)
if wasInterupted {
return usr, false
}
if err != nil {
log.Errorf("failed to send status to server: %v", err)
return NewReportErrorState(usr.update, usr.status), false
}
if usr.status == client.StatusFailure {
log.Debugf("attempting to upload deployment logs for failed update")
err, wasInterupted = usr.trySend(sendDeploymentLogs, c)
if wasInterupted {
return usr, false
}
if err != nil {
log.Errorf("failed to send deployment logs to server: %v", err)
return NewReportErrorState(usr.update, usr.status), false
}
}
log.Debug("reporting complete")
// stop deployment logging as the update is completed at this point
DeploymentLogger.Disable()
// status reported, logs uploaded if needed, remove state data
RemoveStateData(ctx.store)
return initState, false
}
func (d *device) EnableUpdatedPartition() error {
inactivePartition, err := d.getInactivePartition()
if err != nil {
return err
}
log.Info("Enabling partition with new image installed to be a boot candidate: ", string(inactivePartition))
// For now we are only setting boot variables
err = d.WriteEnv(BootVars{"upgrade_available": "1", "mender_boot_part": inactivePartition, "bootcount": "0"})
if err != nil {
return err
}
log.Debug("Marking inactive partition as a boot candidate successful.")
return nil
}
func (u *UpdateClient) getUpdateInfo(api ApiRequester, process RequestProcessingFunc,
server string) (interface{}, error) {
req, err := makeUpdateCheckRequest(server)
if err != nil {
return nil, errors.Wrapf(err, "failed to create update check request")
}
r, err := api.Do(req)
if err != nil {
log.Debug("Sending request error: ", err)
return nil, errors.Wrapf(err, "update check request failed")
}
defer r.Body.Close()
data, err := process(r)
return data, err
}
func (uv *UpdateVerifyState) Handle(ctx *StateContext, c Controller) (State, bool) {
// start deployment logging
if err := DeploymentLogger.Enable(uv.update.ID); err != nil {
return NewUpdateErrorState(NewTransientError(err), uv.update), false
}
log.Debug("handle update verify state")
// look at the update flag
has, haserr := c.HasUpgrade()
if haserr != nil {
log.Errorf("has upgrade check failed: %v", haserr)
me := NewFatalError(errors.Wrapf(haserr, "failed to perform 'has upgrade' check"))
return NewUpdateErrorState(me, uv.update), false
}
if has {
if uv.update.Image.YoctoID == c.GetCurrentImageID() {
log.Infof("successfully running with new image %v", c.GetCurrentImageID())
// update info and has upgrade flag are there, we're running the new
// update, everything looks good, proceed with committing
return NewUpdateCommitState(uv.update), false
} else {
// seems like we're running in a different image than expected from update
// information, best report an error
log.Errorf("running with image %v, expected updated image %v",
c.GetCurrentImageID(), uv.update.Image.YoctoID)
return NewUpdateStatusReportState(uv.update, client.StatusFailure), false
}
}
// HasUpgrade() returned false
// most probably booting new image failed and u-boot rolledback to
// previous image
log.Errorf("update info for deployment %v present, but update flag is not set;"+
" running rollback image (previous active partition)",
uv.update.ID)
return NewUpdateStatusReportState(uv.update, client.StatusFailure), false
}
func TestDeploymentLoggingHook(t *testing.T) {
tempDir, _ := ioutil.TempDir("", "logs")
defer os.RemoveAll(tempDir)
deploymentLogger := NewDeploymentLogManager(tempDir)
log.AddHook(NewDeploymentLogHook(deploymentLogger))
log.Info("test1")
deploymentLogger.Enable("1111-2222")
logFile := fmt.Sprintf(logFileNameScheme, 1, "1111-2222")
fileLocation := path.Join(tempDir, logFile)
log.Debug("test2")
deploymentLogger.Disable()
log.Info("test3")
// test correct format of log messages
if !logFileContains(fileLocation, `{"level":"debug","message":"test2","timestamp":"`) {
t.FailNow()
}
}
// Check if new update is available. In case of errors, returns nil and error
// that occurred. If no update is available *UpdateResponse is nil, otherwise it
// contains update information.
func (m *mender) CheckUpdate() (*client.UpdateResponse, menderError) {
currentImageID := m.GetCurrentImageID()
//TODO: if currentImageID == "" {
// return errors.New("")
// }
haveUpdate, err := m.updater.GetScheduledUpdate(m.api.Request(m.authToken),
m.config.ServerURL)
if err != nil {
// remove authentication token if device is not authorized
if err == client.ErrNotAuthorized {
if remErr := m.authMgr.RemoveAuthToken(); remErr != nil {
log.Warn("can not remove rejected authentication token")
}
}
log.Error("Error receiving scheduled update data: ", err)
return nil, NewTransientError(err)
}
if haveUpdate == nil {
log.Debug("no updates available")
return nil, nil
}
update, ok := haveUpdate.(client.UpdateResponse)
if !ok {
return nil, NewTransientError(errors.Errorf("not an update response?"))
}
log.Debugf("received update response: %v", update)
if update.Image.YoctoID == currentImageID {
log.Info("Attempting to upgrade to currently installed image ID, not performing upgrade.")
return &update, NewTransientError(os.ErrExist)
}
return &update, nil
}
