def write_properties(self, properties: PersistentDictType,
file_datetime: datetime.datetime) -> None:
"""
Write properties to the ndata file specified by reference.
:param reference: the reference to which to write
:param properties: the dict to write to the file
:param file_datetime: the datetime for the file
The properties param must not change during this method. Callers should
take care to ensure this does not happen.
"""
with self.__lock:
absolute_file_path = self.__file_path
#logging.debug("WRITE properties %s for %s", absolute_file_path, key)
make_directory_if_needed(os.path.dirname(absolute_file_path))
exists = os.path.exists(absolute_file_path)
if exists:
rewrite_zip(absolute_file_path, Utility.clean_dict(properties))
else:
write_zip(absolute_file_path, None,
Utility.clean_dict(properties))
# convert to utc time.
tz_minutes = Utility.local_utcoffset_minutes(file_datetime)
timestamp = calendar.timegm(
file_datetime.timetuple()) - tz_minutes * 60
os.utime(absolute_file_path, (time.time(), timestamp))
def write_data(self, data, file_datetime):
"""
Write data to the ndata file specified by reference.
:param data: the numpy array data to write
:param file_datetime: the datetime for the file
"""
with self.__lock:
assert data is not None
absolute_file_path = self.__file_path
#logging.debug("WRITE data file %s for %s", absolute_file_path, key)
make_directory_if_needed(os.path.dirname(absolute_file_path))
properties = self.read_properties() if os.path.exists(
absolute_file_path) else dict()
write_zip(absolute_file_path, data, properties)
# convert to utc time.
tz_minutes = Utility.local_utcoffset_minutes(file_datetime)
timestamp = calendar.timegm(
file_datetime.timetuple()) - tz_minutes * 60
os.utime(absolute_file_path, (time.time(), timestamp))
def stringify_item(item):
date_utc = item[1]
tz_minutes = Utility.local_utcoffset_minutes(date_utc)
date_local = date_utc + datetime.timedelta(minutes=tz_minutes)
return str(os.path.basename(os.path.dirname(item[0]))) + " (" + date_local.strftime("%c") + ")"