mirror of
https://github.com/jxxghp/MoviePilot.git
synced 2026-10-31 12:24:39 +08:00
102 lines
2.8 KiB
Python
102 lines
2.8 KiB
Python
"""
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把标准输出按完整行交给日志系统，控制缓冲与关闭时的剩余内容刷新。
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"""
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from __future__ import annotations
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import io
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import logging
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import sys
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import threading
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from logging.handlers import RotatingFileHandler
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from pathlib import Path
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class RotatingLineStream(io.TextIOBase):
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"""
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将 stdout/stderr 按行写入滚动日志文件。
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这里不复用业务 logger，避免 stdout 日志再次回流到控制台或普通业务日志文件，
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同时保证启动阶段的 print/uvicorn 输出也能按配置滚动。
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"""
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encoding = "utf-8"
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def __init__(self, log_file: Path, max_bytes: int, backup_count: int):
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"""
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创建写入指定滚动日志文件的文本流。
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"""
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super().__init__()
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self._buffer = ""
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self._lock = threading.Lock()
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logger_name = f"moviepilot-stdio::{log_file}"
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self._logger = logging.getLogger(logger_name)
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self._logger.setLevel(logging.INFO)
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self._logger.propagate = False
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self._logger.handlers.clear()
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handler = RotatingFileHandler(
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filename=str(log_file),
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maxBytes=max_bytes,
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backupCount=backup_count,
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encoding="utf-8",
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)
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handler.setFormatter(logging.Formatter("%(message)s"))
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self._logger.addHandler(handler)
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def writable(self) -> bool:
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"""
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声明该文本流支持写入。
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"""
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return True
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def isatty(self) -> bool:
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"""
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声明该日志流不是交互式终端。
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"""
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return False
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def write(self, message: str) -> int:
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"""
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缓冲消息并按完整行写入滚动日志。
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"""
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if not message:
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return 0
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with self._lock:
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self._buffer += message.replace("\r\n", "\n")
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while "\n" in self._buffer:
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line, self._buffer = self._buffer.split("\n", 1)
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self._logger.info(line)
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return len(message)
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def flush(self) -> None:
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"""
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写出剩余缓冲区并刷新底层处理器。
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"""
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with self._lock:
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if self._buffer:
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self._logger.info(self._buffer)
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self._buffer = ""
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for handler in self._logger.handlers:
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handler.flush()
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def configure_rotating_stdio(
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*, log_file: Path, max_bytes: int, backup_count: int
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) -> RotatingLineStream:
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"""
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将当前进程的 stdout/stderr 统一重定向到同一个滚动日志流。
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"""
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log_file.parent.mkdir(parents=True, exist_ok=True)
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stream = RotatingLineStream(
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log_file=log_file,
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max_bytes=max_bytes,
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backup_count=backup_count,
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)
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sys.stdout = stream
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sys.stderr = stream
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return stream
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