def put(self, key, data):
json_data = JsonFileManager.read(self._json_db_dir, self._dbname)
if data:
json_data[key] = self._jsonConverter.serialize(data)
elif key in json_data:
del json_data[key]
JsonFileManager.write(self._json_db_dir, self._dbname, json_data)
def clear_except_metadata(self):
json_data = JsonFileManager.read(self._json_db_dir, self._dbname)
metadata = json_data.get('metadata', None)
json_data = {}
if metadata != None:
json_data['metadata'] = metadata
JsonFileManager.write(self._json_db_dir, self._dbname, json_data)
def process(self):
metadata = JsonFileManager.read(self.dir, 'metadata_db.json')
self._resource_cache = {}
for hook in self.hooks:
try:
self._process_hook(hook, metadata)
except FatalUpdateError:
raise
except Exception:
log.exception("Exception caught while running hook %s",
hook.name)
def pop(self, key):
json_data = JsonFileManager.read(self._json_db_dir, self._dbname)
if key in json_data:
value = self._jsonConverter.deserialize(json_data[key])
ret_val = value.popleft()
if not value:
del json_data[key]
else:
json_data[key] = self._jsonConverter.serialize(value)
JsonFileManager.write(self._json_db_dir, self._dbname, json_data)
return ret_val
else:
return None
def has_key(self, key):
json_data = JsonFileManager.read(self._json_db_dir, self._dbname)
return key in json_data
def delete(self, key):
json_data = JsonFileManager.read(self._json_db_dir, self._dbname)
if key in json_data:
del json_data[key]
JsonFileManager.write(self._json_db_dir, self._dbname, json_data)
def get(self, key, default=None):
json_data = JsonFileManager.read(self._json_db_dir, self._dbname)
if key in json_data:
return self._jsonConverter.deserialize(json_data[key])
else:
return default