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()
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()
def __init__(self, app: web.Application, defaults: List[dict]):
FlushedStore.__init__(self, app)
TwinKeyDict.__init__(self)
self.key: str = None
self._defaults = defaults
self._ready_event: asyncio.Event = None
self.clear() # inserts defaults
def __init__(self, app: web.Application, defaults: list[types.StoreEntry]):
self: TwinKeyDict[str, int, dict]
FlushedStore.__init__(self, app)
TwinKeyDict.__init__(self)
self.key: str = None
self._defaults = defaults
self._ready_event: asyncio.Event = None
self.clear() # inserts defaults
def _find_nid(
self,
store: twinkeydict.TwinKeyDict,
sid: str,
input_type: str,
) -> int:
if sid is None:
return 0
if isinstance(sid, int) or sid.isdigit():
return int(sid)
try:
return store.right_key(sid)
except KeyError:
raise exceptions.UnknownId(
f'No numeric ID matching [sid={sid},type={input_type}] found in store'
)
def _find_sid(
self,
store: twinkeydict.TwinKeyDict,
nid: int,
input_type: str,
) -> str:
if nid is None or nid == 0:
return None
if isinstance(nid, str):
raise exceptions.DecodeException(
f'Expected numeric ID, got string "{nid}"')
try:
sid = store.left_key(nid)
except KeyError:
# If service ID not found, randomly generate one
sid = self._assign_id(input_type)
store[sid, nid] = dict()
return sid
def clear(self):
TwinKeyDict.clear(self)
for obj in self._defaults:
self.__setitem__(obj['keys'], obj['data'])
def __delitem__(self, keys):
TwinKeyDict.__delitem__(self, keys)
self.set_changed()
def __setitem__(self, keys, item):
TwinKeyDict.__setitem__(self, keys, item)
self.set_changed()
def setup(app: web.Application):
app['block_cache'] = TwinKeyDict()
def rename(cache: TwinKeyDict, existing: str, desired: str):
block = cache.get((existing, None))
if block: # pragma: no cover
del cache[existing, None]
block['id'] = desired
cache[desired, block['nid']] = block
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()
def get(cache: TwinKeyDict, ids: dict) -> Optional[dict]:
return cache.get((ids.get('id'), ids.get('nid')))
