def store_file(self, file, remove_original=True):
filename = os.path.basename(file)
upload_path = os.path.join(self._store_path, filename)
log.debug("Uploading file '%s' into Dropbox as '%s'", filename,
upload_path)
with open(file, "rb") as f:
try:
self._dropbox.files_upload(f.read(),
upload_path,
mode=WriteMode('overwrite'))
except ApiError as err:
if err.error.is_path() and err.error.get_path(
).reason.is_insufficient_space():
err_msg = "Cannot back up; insufficient space."
elif err.user_message_text:
err_msg = err.user_message_text
else:
err_msg = err
raise DataSaveError(err_msg)
except Exception as err:
raise DataSaveError(err)
if remove_original:
log.debug("Removing the original file %s", file)
os.remove(file)
def __init__(self, options):
self.cli_options = self.get_argparser().parse_args(options)
log.debug("Parsed CLI options: %s", self.cli_options)
self.timelapse_config_list = TimelapseConfig.parse_configs_from_file(
self.cli_options.config)
self.scheduler = AsyncIOScheduler()
self.active_cameras_sn = set()
def should_run_now(self, time_now=None):
"""
Function which determines whether the timelapse job should be run NOW?
:param time_now: Time determining what it means NOW.
:return: True if yes, False otherwise.
"""
if time_now is None:
time_now = datetime.datetime.now()
def time_in_range(start, end, now):
"""
Returns True if 'now' is in the range of 'start' and 'end'. False otherwise
"""
if start <= end:
return start <= now <= end
else:
return start <= now or now <= end
# First check day of the week
if time_now.weekday() not in self.week_days:
log.debug("%s: not configured to run on this week day %d", self,
time_now.weekday())
return False
# Now check the time of day
if not time_in_range(self.since_tod, self.till_tod, time_now.time()):
log.debug("%s: not configured to run at this time %s", self,
time_now.time())
return False
return True
def store_tmp_file_in_datastore(config, tmp_file):
datastores = config.datastore
for datastore in datastores:
datastore_type = datastore[TimelapseConfig.DATASTORE_TYPE]
try:
if datastore_type == TimelapseConfig.DATASTORE_TYPE_DROPBOX:
ds = DropboxDataStore(
datastore[TimelapseConfig.DATASTORE_DROPBOX_TOKEN],
datastore[TimelapseConfig.DATASTORE_STORE_PATH],
datastore.get(
TimelapseConfig.DATASTORE_DROPBOX_TIMEOUT, None))
elif datastore_type == TimelapseConfig.DATASTORE_TYPE_FILESYSTEM:
ds = FilesystemDataStore(
datastore[TimelapseConfig.DATASTORE_STORE_PATH])
else:
raise NotImplementedError("Unexpected datastore type '%s'",
datastore_type)
except DatastoreError as err:
log.error(
"Failed to initialize datastore '%s' due to error: %s",
datastore_type, err)
continue
log.debug("Storing temporary file '%s' using data store '%s'",
tmp_file, ds)
try:
ds.store_file(tmp_file, False)
except DataSaveError as err:
log.warning(
"Failed to store file '%s' using datastore '%s' due to error: %s",
tmp_file, datastore_type, err)
continue
shutil.rmtree(os.path.dirname(tmp_file))
def store_file(self, file, remove_original=True):
filename = os.path.basename(file)
move_path = os.path.join(self._store_path, filename)
if remove_original:
log.debug("Removing the original file %s", file)
shutil.move(file, move_path)
else:
shutil.copyfile(file, move_path)
def camera_summary_get_serial_number(camera_summary):
"""
Extracts serial number from provided camera summary text.
:param camera_summary:
:return:
"""
# extract Serial Number
match = re.search(r'Serial Number: (.*)\n', camera_summary)
if match:
serial_number = match.group(1)
log.debug('Extracted Serial Number: %s', serial_number)
else:
log.error('No Serial Number found in the summary')
serial_number = None
return serial_number
def find_timelapser_configuration():
config_file_name = 'timelapser.yaml'
paths = [
# configuration in CWD
os.path.join(os.getcwd(), config_file_name),
# configuration in user's home
os.path.expanduser(os.path.join('~', config_file_name)),
# system-wide configuration
os.path.join('etc', config_file_name)
]
for path in paths:
if os.path.isfile(path):
log.debug("Most preferred config file is '%s'", path)
return path
# TODO: probably return an Exception? we should probably use some default values in case no configurtation was specified.
return None
def __init__(self, token, store_path, timeout=None):
if timeout is None:
timeout = self.DEFAULT_TIMEOUT
self._store_path = store_path
try:
self._dropbox = dropbox.Dropbox(token, timeout=timeout)
user_account = self._dropbox.users_get_current_account()
except AuthError:
raise DatastoreError(
"Invalid Dropbox access token. Try re-generating access token from the app console on \
the web")
except Exception as err:
raise DatastoreError(
"Failed to initialize Dropbox datastore due to error: {}".
format(err))
else:
log.debug("Successfully logged into Dropbox as user '%s'",
user_account.name)
def take_picture_job(self, config, camera, eventloop):
log.info("Taking picture in %s ...", threading.current_thread())
tmp_store_dir = tempfile.mkdtemp()
try:
picture = camera.take_picture()
tmp_store_location = os.path.join(tmp_store_dir,
os.path.basename(picture))
camera.download_picture(picture, tmp_store_location,
config.keep_on_camera)
except CameraDeviceError as err:
# there is some problem with the Camera, remove its whole jobstore
log.warning("Error occurred while taking picture on %s(%s)",
camera.name, camera.serial_number)
log.debug(err)
shutil.rmtree(tmp_store_dir)
self._scheduler_remove_jobstore(camera.serial_number)
else:
log.info("Temporarily stored taken picture in %s",
tmp_store_location)
# TODO: it may make sense to use camera_sn in the store path if the configuration is not bound to a specific camera, thus there can be multiple cameras storing pictures into the same folder
eventloop.run_in_executor(None, self.store_tmp_file_in_datastore,
config, tmp_store_location)
def get_next_fire_time(self, previous_fire_time, now):
"""
Returns the next datetime to fire on, If no such datetime can be calculated, returns None.
"""
# TODO: Take "now" parameter into account when calculating the next run. Especially make sure that "next_time > now"
# The job is being scheduled for the first time
if not previous_fire_time:
previous_fire_time = now
delta = datetime.timedelta(seconds=self._timelapse_config.frequency)
next_time = previous_fire_time + delta
# modify the time until it fits the criteria
if not self._timelapse_config.should_run_now(next_time):
# There was an error, that made the next_time be scheduled for the same day, but in the past, because the current day
# fit the configured weekdays but it was past till_tod. This happened when since_tod < till_tod. In this case we need
# to jump one day into the future, but before since_tod, so using 00:00.00!
if self._timelapse_config.since_tod < self._timelapse_config.till_tod < next_time.time(
):
next_time = datetime.datetime.combine(
next_time.date() + datetime.timedelta(days=1),
datetime.time(tzinfo=next_time.tzinfo))
# first get through the day of week
while next_time.weekday() not in self._timelapse_config.week_days:
next_time = datetime.datetime.combine(
next_time.date() + datetime.timedelta(days=1),
next_time.timetz())
# now fix the time
next_time = datetime.datetime.combine(
next_time.date(),
self._timelapse_config.since_tod,
tzinfo=next_time.tzinfo)
log.debug("Next job scheduled for %s", next_time.strftime("%c"))
return next_time
def refresh_timelapses_job(self):
refresh_period = 5
loop = asyncio.get_event_loop()
available_cameras = CameraDevice.get_available_cameras()
if len(available_cameras) == 0:
for removed_camera_sn in self.active_cameras_sn:
log.debug("Removing jobs for camera sn: %s", removed_camera_sn)
self.scheduler.remove_jobstore(removed_camera_sn)
self.active_cameras_sn.clear()
self.scheduler.remove_all_jobs()
loop.call_later(refresh_period, self.refresh_timelapses_job)
return
active_cameras_map = {c.serial_number: c for c in available_cameras}
new_active_cameras_sn = [c.serial_number for c in available_cameras]
# remove jobs and job stores for every removed camera
removed_cameras_sn = self.active_cameras_sn - set(
new_active_cameras_sn)
for removed_camera_sn in removed_cameras_sn:
self._scheduler_remove_jobstore(removed_camera_sn)
new_cameras_sn = set(new_active_cameras_sn) - self.active_cameras_sn
# Go through all configuration and add timelapse jobs for any new cameras that fit them
for config in self.timelapse_config_list:
camera_sn = config.camera_sn
# the config is bound to specific device
if camera_sn:
if camera_sn in new_cameras_sn:
camera_device = active_cameras_map[camera_sn]
self._scheduler_add_job(config, camera_device)
log.debug("Added timelapse job for camera sn: %s",
camera_sn)
# configuration is not bound to specific device
else:
for camera_sn in new_cameras_sn:
camera_device = active_cameras_map[camera_sn]
self._scheduler_add_job(config, camera_device)
log.debug("Added timelapse job for camera sn: %s",
camera_sn)
loop.call_later(refresh_period, self.refresh_timelapses_job)
def parse_configs_from_file(path=None):
"""
Parse Timelapse Configurations from a passed YAML config file.
:param path: Path to the configuration YAML file
:return: list of TimelapseConfig objects.
"""
# If no specific configuration was specified, just try to look for some
if path is None:
path = TimelapseConfig.find_timelapser_configuration()
# didn't find any configuration file in default locations
if path is None:
log.info("Didn't find any configuration file.")
parsed_configs = None
else:
log.debug("Using timelapser configuration file '%s'", path)
with open(path) as config_file:
configuration = yaml.safe_load(config_file)
log.debug("Configuration loaded from YMAL file: %s",
str(configuration))
parsed_configs = configuration.get("timelapse_configuration", None)
configurations = list()
if parsed_configs is not None:
for config in parsed_configs:
configurations.append(TimelapseConfig(config))
log.debug("Parsed Timelapse Config: %s",
str(configurations[-1]))
else:
# no confurations found, go just with default one
configurations.append(TimelapseConfig())
log.info(
"Didn't find any explicit timelapse configuration. Using default values."
)
return configurations
def __init__(self, options):
self.cli_options = self.get_argparser().parse_args(options)
log.debug("Parsed CLI options: %s", self.cli_options)
def _scheduler_remove_jobstore(self, jobstore):
log.debug("Removing jobs for camera sn: %s", jobstore)
self.scheduler.remove_jobstore(jobstore)
self.active_cameras_sn.remove(jobstore)
