def watcher_parser(config_file, logname, prom_client):
"""Return Watcher instances from config."""
conf, _ = config_parser_util.read_config(config_file, logname)
conf_hash = config_parser_util.config_file_hash(config_file)
faucet_config_files, faucet_conf_hashes, result = _watcher_parser_v2(
conf, logname, prom_client)
return conf_hash, faucet_config_files, faucet_conf_hashes, result
def _check_hashes(self):
"""Verify and return faucet_config_hash_info labels"""
labels = self._get_info(metric=self.metrics.faucet_config_hash,
name='faucet_config_hash_info')
files = labels['config_files'].split(',')
hashes = labels['hashes'].split(',')
self.assertTrue(len(files) == len(hashes) == 1)
self.assertEqual(files[0], self.config_file, 'wrong config file')
hash_value = config_parser_util.config_file_hash(self.config_file)
self.assertEqual(hashes[0], hash_value, 'hash validation failed')
return labels
def _config_changed(self, new_config_file):
"""Return True if configuration has changed.
Args:
new_config_file (str): name, possibly new, of FAUCET config file.
Returns:
bool: True if the file, or any file it includes, has changed.
"""
if new_config_file != self.config_file:
return True
for config_file, config_hash in list(self.config_hashes.items()):
config_file_exists = os.path.isfile(config_file)
# Config file not loaded but exists = reload.
if config_hash is None and config_file_exists:
return True
# Config file loaded but no longer exists = reload.
if config_hash and not config_file_exists:
return True
# Config file hash has changed = reload.
new_config_hash = config_file_hash(config_file)
if new_config_hash != config_hash:
return True
return False
