def load(path, index_keys, filterkeys=None, matchtype="and"):
"""
load stored json file (with dump() created) and return TimeseriesArrayStats object
parameters:
path <str> path to search for stored json file, the filename is automatically created from given index_keys
index_keys <tuple> list of index_keys
returns:
<TimeseriesArray>
"""
# logging.info("index_keys: %s", index_keys)
infilename = os.path.join(path, TimeseriesArrayStats.get_dumpfilename(index_keys))
try:
fh = open(infilename, "rb")
indata = json.load(fh)
except StandardError as exc:
logging.exception(exc)
logging.error("something went wrong while loading %s", infilename)
raise exc
# logging.info("loaded JSON data: %s", indata)
tsastats = TimeseriesArrayStats.__new__(TimeseriesArrayStats)
tsastats.__index_keynames = tuple(indata["index_keys"])
tsastats.__value_keynames = tuple(indata["value_keys"])
tsastats.__stats = {}
# for filename in indata["tsstat_filenames"]:
for key, filename in tsastats.get_load_filenames(path, index_keys, filterkeys, matchtype).items():
# logging.info("loading TimeseriesStats object from %s", fullfilename)
filehandle = open(filename, "rb")
tsastats.__stats[key] = TimeseriesStats.load(filehandle)
filehandle.close()
return tsastats
def from_json(jsondata):
indata = json.loads(jsondata)
tsastats = TimeseriesArrayStats.__new__(TimeseriesArrayStats)
tsastats.__index_keynames = indata[0]
tsastats.__value_keynames = indata[1]
tsastats.__stats = {}
for key, tsstats in indata[2]:
# from json there are only list, but these are not hashable,
# so convert key to tuple
tsastats.__stats[tuple(key)] = TimeseriesStats.from_json(tsstats)
return tsastats
