async def read(self, document: str):
data = []
try:
self.rev = None
self.document = None
self._ready_event.clear()
if not self.volatile:
client = couchdb_client.get_client(self.app)
self.rev, data = await client.read(DB_NAME, document, [])
self.document = document
LOGGER.info(
f'{self} Read {len(data)} blocks. Rev = {self.rev}')
except asyncio.CancelledError: # pragma: no cover
raise
except Exception as ex:
warnings.warn(f'{self} read error {type(ex).__name__}({ex})')
finally:
# Clear -> load from database -> merge defaults
TwinKeyDict.clear(self)
for obj in data:
TwinKeyDict.__setitem__(self, obj['keys'], obj['data'])
for obj in self._defaults:
with suppress(TwinKeyError):
if obj['keys'] not in self:
self.__setitem__(obj['keys'], obj['data'])
self._ready_event.set()
async def read(self, device_id: str):
key = BLOCK_STORE_KEY.format(id=device_id)
data = []
try:
self.key = None
self._ready_event.clear()
if not self.volatile:
resp = await http.session(self.app).post(f'{STORE_URL}/get', json={
'id': key,
'namespace': NAMESPACE,
})
self.key = key
data = (await resp.json())['value'].get('data', [])
LOGGER.info(f'{self} Read {len(data)} blocks')
except asyncio.CancelledError: # pragma: no cover
raise
except Exception as ex:
warnings.warn(f'{self} read error {strex(ex)}')
finally:
# Clear -> load from database -> merge defaults
TwinKeyDict.clear(self)
for obj in data:
TwinKeyDict.__setitem__(self, obj['keys'], obj['data'])
for obj in self._defaults:
with suppress(TwinKeyError):
if obj['keys'] not in self:
self.__setitem__(obj['keys'], obj['data'])
self._ready_event.set()
def clear(self):
TwinKeyDict.clear(self)
for obj in self._defaults:
self.__setitem__(obj['keys'], obj['data'])
def set_all(cache: TwinKeyDict, blocks: List[dict]):
cache.clear()
for block in blocks:
cache[block['id'], block['nid']] = block
def delete_all(cache: TwinKeyDict):
cache.clear()