def test_json_read_write_success(self):
ss_file_path = os.path.join(self.temp_dir, 'ss_dis.json')
self.assertFalse(exists(ss_file_path))
write_json(self.ss_dis_dic, ss_file_path)
self.assertTrue(exists(ss_file_path))
result = read_json(ss_file_path)
self.assertEqual(self.ss_dis_dic, result)
return None
def fetch_ss_dis(dir_path):
"""Return a processed dictionary for ss_dis data.
Args:
dir_path (Unicode): The dir path where ss_dis files are located.
Returns:
ss_dis_data (dict): A dictionary of processed ss_dis data.
"""
working_path = os.path.abspath(dir_path)
ss_dis_files = _find_existing_files(working_path)
if ss_dis_files['files_to_archive']:
for name_to_archive in ss_dis_files['files_to_archive']:
path_to_archive = os.path.join(working_path, name_to_archive)
_archive_ss_data(
path_to_archive
)
if ss_dis_files['valid_raw_file']:
valid_raw_fp = os.path.join(
working_path, ss_dis_files['valid_raw_file']
)
else:
valid_raw_fp = None
if ss_dis_files['valid_json_file']:
valid_json_fp = os.path.join(
working_path, ss_dis_files['valid_json_file']
)
else:
valid_json_fp = None
# If we a valid pair exists, use the json to return a dictionary.
if valid_raw_fp and valid_json_fp:
assert os.path.isfile(valid_raw_fp)
assert os.path.isfile(valid_json_fp)
current_json_path = valid_json_fp
# Generate a companion json file if a single raw file is found.
elif valid_raw_fp:
valid_raw_fn = os.path.basename(valid_raw_fp)
assert not valid_json_fp
this_timestamp = SS_DIS_PAT.search(valid_raw_fn).group(2)
companion_json = "{}.{}.{}".format(
'ss_dis',
this_timestamp,
'json'
)
companion_json_path = os.path.join(working_path, companion_json)
ss_dict = _generate_ss_dict(valid_raw_fp)
write_json(ss_dict, companion_json_path)
current_json_path = companion_json_path
# Download new data and generate json file.
elif not (valid_raw_fp or valid_json_fp):
new_names = _new_filenames()
new_raw_path = os.path.join(working_path, new_names.raw)
new_json_path = os.path.join(working_path, new_names.json)
_download_ss_data(new_raw_path)
ss_dict = _generate_ss_dict(new_raw_path)
write_json(ss_dict, new_json_path)
current_json_path = new_json_path
elif valid_raw_fp and not valid_json_fp:
raise RuntimeError("Should not have a JSON file without a TXT file.")
else:
raise RuntimeError("Unhandled case.")
# Always return the ss_dis dictionary by reading the json
# file to ensure consistency of future runs.
ss_dis_data = read_json(current_json_path)
return ss_dis_data
