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Update state.py
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1 parent 416eee8 commit 584d6e3

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Lines changed: 11 additions & 7 deletions

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pyhilo/util/state.py

Lines changed: 11 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -3,10 +3,10 @@
33
from __future__ import annotations
44

55
import asyncio
6-
import os
7-
import tempfile
86
from datetime import datetime
7+
import os
98
from os.path import isfile
9+
import tempfile
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from typing import Any, ForwardRef, TypedDict, TypeVar, get_type_hints
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1212
import aiofiles
@@ -118,12 +118,15 @@ def _get_defaults(cls: type[T]) -> T:
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new_dict[k] = None # type: ignore[literal-required]
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return new_dict # type: ignore[return-value]
120120

121-
def _write_state(state_yaml: str, state: dict[str, Any]) -> None:
121+
122+
def _write_state(state_yaml: str, state: dict[str, Any] | StateDict) -> None:
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"Write state atomically to a temp file, this prevents reading a file being written to"
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124125
dir_name = os.path.dirname(os.path.abspath(state_yaml))
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content = yaml.dump(state)
126-
with tempfile.NamedTemporaryFile(mode = "w", dir=dir_name, delete=False, suffix=".tmp") as tmp:
127+
with tempfile.NamedTemporaryFile(
128+
mode="w", dir=dir_name, delete=False, suffix=".tmp"
129+
) as tmp:
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tmp.write(content)
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tmp_path = tmp.name
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os.replace(tmp_path, state_yaml)
@@ -139,7 +142,9 @@ async def get_state(state_yaml: str, _already_locked: bool = False) -> StateDict
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:type _already_locked: ``bool``
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:rtype: ``StateDict``
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"""
142-
if not isfile(state_yaml): # noqa: PTH113 - isfile is fine and simpler in this case.
145+
if not isfile(
146+
state_yaml
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): # noqa: PTH113 - isfile is fine and simpler in this case.
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return _get_defaults(StateDict)
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145150
try:
@@ -180,7 +185,6 @@ async def get_state(state_yaml: str, _already_locked: bool = False) -> StateDict
180185
return defaults
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182187

183-
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async def set_state(
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state_yaml: str,
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key: str,
@@ -206,4 +210,4 @@ async def set_state(
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# TODO: Use asyncio.get_running_loop() and run_in_executor to write
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# to the file in a non blocking manner. Currently, yaml.dump is
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# synchronous on the main event loop.
209-
_write_state(state_yaml, new_state)
213+
_write_state(state_yaml, new_state)

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