def LoadDataBlockRepByBlockId(self, block_id):
block_info = decode_block_id(block_id)
dbr = self.LoadDataBlockReqByIndex(block_info['partition_id'],
block_info['data_block_index'])
if dbr:
assert dbr.block_id == block_id, \
"Invalid datablock, expected %s, but got %s), please "\
"check datasource!"%(block_id, dbr.block_id)
return dbr
def __init__(self,
data_source_name,
data_block_fname,
partition_id,
dirpath,
check_existed=True):
assert data_block_fname.endswith(DataBlockSuffix), \
"data block fname {} should has suffix {}".format(
data_block_fname, DataBlockSuffix
)
block_id = data_block_fname[:-len(DataBlockSuffix)]
segmap = decode_block_id(block_id)
if segmap["data_source_name"] != data_source_name:
raise ValueError("{} invalid. Data source name mismatch "\
"{} != {}".format(data_block_fname,
segmap["data_source_name"], data_source_name))
self._data_source_name = data_source_name
if segmap["partition_id"] != partition_id:
raise ValueError("{} invalid. partition mismatch "\
"{} != {}".format(data_block_fname,
segmap["partition_id"], partition_id))
self._partition_id = partition_id
start_time, end_time = \
segmap["time_frame"][0], segmap["time_frame"][1]
if start_time > end_time:
raise ValueError("{} invalid. time frame error start_time {} > "\
"end_time {}".format(data_block_fname,
start_time, end_time))
self._start_time, self._end_time = start_time, end_time
self._data_block_index = segmap["data_block_index"]
self._block_id = block_id
meta_fname = encode_data_block_meta_fname(self._data_source_name,
self._partition_id,
self._data_block_index)
meta_fpath = os.path.join(dirpath, meta_fname)
if check_existed and (not gfile.Exists(meta_fpath) or \
gfile.IsDirectory(meta_fpath)):
raise ValueError("{} invalid. the corresponding meta file "\
"is not existed".format(data_block_fname))
self._data_block_meta_fpath = meta_fpath
self._data_block_meta = None
self._data_block_fpath = os.path.join(dirpath, data_block_fname)
def LoadDataBlockRepByBlockId(self, block_id):
block_info = decode_block_id(block_id)
return self.LoadDataBlockReqByIndex(block_info['partition_id'],
block_info['data_block_index'])
