112 lines
3.1 KiB
Python
112 lines
3.1 KiB
Python
"""线程安全的系统诊断日志缓冲区。
|
|
|
|
任何上下文（异步协程、同步函数、WebSocket 回调所在的执行器线程）都可以安全调用
|
|
``record(...)`` 写入一条诊断日志，用于排查私信收发失败的原因。
|
|
|
|
设计要点：
|
|
- 内存环形缓冲区是“实时”数据源（API 直接读取，零延迟），任何线程都能写入；
|
|
- ``_pending`` 队列由 main.py 的后台任务定期落库到 ``system_logs`` 表做持久化；
|
|
- 启动时可用 ``seed(...)`` 把历史记录读回缓冲区。
|
|
"""
|
|
|
|
import logging
|
|
import threading
|
|
from collections import deque
|
|
from datetime import datetime
|
|
from typing import Optional
|
|
|
|
from .log_limits import bound_system_log_detail, truncate_text
|
|
|
|
logger = logging.getLogger("douyin_im.system")
|
|
|
|
_VALID_LEVELS = ("info", "success", "warning", "error")
|
|
|
|
_lock = threading.Lock()
|
|
_buffer: deque = deque(maxlen=3000)
|
|
_pending: list = []
|
|
_seq = 0
|
|
|
|
|
|
def record(
|
|
event: str,
|
|
detail: str = "",
|
|
level: str = "info",
|
|
category: str = "system",
|
|
account_id: Optional[int] = None,
|
|
) -> dict:
|
|
"""写入一条诊断日志，返回该条记录。"""
|
|
global _seq
|
|
if level not in _VALID_LEVELS:
|
|
level = "info"
|
|
with _lock:
|
|
_seq += 1
|
|
entry = {
|
|
"id": _seq,
|
|
"account_id": account_id,
|
|
"level": level,
|
|
"category": category,
|
|
"event": truncate_text(event, 255),
|
|
"detail": bound_system_log_detail(detail),
|
|
"created_at": datetime.utcnow().isoformat(),
|
|
}
|
|
_buffer.appendleft(entry)
|
|
_pending.append(entry)
|
|
|
|
msg = f"[{category}] {entry['event']}" + (
|
|
f" | {entry['detail']}" if entry["detail"] else ""
|
|
)
|
|
if level == "error":
|
|
logger.error(msg)
|
|
elif level == "warning":
|
|
logger.warning(msg)
|
|
else:
|
|
logger.info(msg)
|
|
return entry
|
|
|
|
|
|
def get_logs(
|
|
account_id: Optional[int] = None,
|
|
level: Optional[str] = None,
|
|
category: Optional[str] = None,
|
|
limit: int = 200,
|
|
) -> list:
|
|
"""按条件读取最近的诊断日志（最新优先）。"""
|
|
with _lock:
|
|
items = list(_buffer)
|
|
out = []
|
|
for e in items:
|
|
if account_id is not None and e["account_id"] != account_id:
|
|
continue
|
|
if level and e["level"] != level:
|
|
continue
|
|
if category and e["category"] != category:
|
|
continue
|
|
out.append(e)
|
|
if len(out) >= limit:
|
|
break
|
|
return out
|
|
|
|
|
|
def drain_pending() -> list:
|
|
"""取出尚未落库的记录（供后台 flush 任务持久化）。"""
|
|
with _lock:
|
|
items = _pending[:]
|
|
_pending.clear()
|
|
return items
|
|
|
|
|
|
def seed(entries: list) -> None:
|
|
"""启动时把持久化的历史记录读回缓冲区（不会重复落库）。"""
|
|
global _seq
|
|
with _lock:
|
|
for e in sorted(entries, key=lambda x: x.get("id") or 0):
|
|
_buffer.appendleft(e)
|
|
if (e.get("id") or 0) > _seq:
|
|
_seq = e["id"]
|
|
|
|
|
|
def clear() -> None:
|
|
with _lock:
|
|
_buffer.clear()
|
|
_pending.clear()
|