PTV/ptvp35
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KVJson._load_key + aexit backup

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AF 2021-12-08 16:32:51 +03:00
parent b2a3503e0f
commit 25727aabd7
1 changed files with 19 additions and 4 deletions
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23
ptvp35/__init__.py
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@ -4,7 +4,7 @@ import pathlib
import pickle import pickle
import shutil import shutil
from io import StringIO from io import StringIO
from typing import Any, Optional, IO, Type from typing import Any, Optional, IO, Type, Hashable
class Request: class Request:
@ -66,10 +66,21 @@ class KVJson(KVRequest):
def line(self) -> str: def line(self) -> str:
return json.dumps({'key': self.key, 'value': self.value}) + "\n" return json.dumps({'key': self.key, 'value': self.value}) + "\n"
@classmethod
def _load_key(cls, key: Any) -> Hashable:
if isinstance(key, Hashable):
return key
elif isinstance(key, list):
return tuple(map(cls._load_key, key))
elif isinstance(key, dict):
return tuple((cls._load_key(k), cls._load_key(v)) for k, v in key)
else:
raise TypeError("unknown KVJson key type, cannot convert to hashable")
@classmethod @classmethod
def fromline(cls, line: str) -> 'KVJson': def fromline(cls, line: str) -> 'KVJson':
d = json.loads(line) d = json.loads(line)
return KVJson(d['key'], d['value'], None) return KVJson(cls._load_key(d['key']), d['value'], None)
class Db: class Db:
@ -226,8 +237,12 @@ class Db:
self.__task.cancel() self.__task.cancel()
await self._dump_buffer() await self._dump_buffer()
self.__file.close() self.__file.close()
with open(self.__path, "w") as file: with open(self.__path_backup, "w") as file:
self.db2io(self.__mmdb, file) self.__initial_size = self.db2io(self.__mmdb, file)
self.__path_recover.touch()
shutil.copy(self.__path_backup, self.__path)
self.__path_recover.unlink()
self.__path_backup.unlink()
def _uninitialize(self): def _uninitialize(self):
self.__mmdb = None self.__mmdb = None