chore: auto release commit (2026-09-15 00:32:44)

scripts/service/logs_viewer.py

@@ -0,0 +1,86 @@
+"""读取日志文件末尾 N 行（v1.1.18）。
+
+按 level 过滤：默认 INFO+。适用于 RotatingFileHandler 落地的日志文件。
+"""
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+from util.runtime_paths import get_logs_dir
+
+
+DEFAULT_TAIL = 200
+_LEVEL_ORDER = {
+    "DEBUG": 10, "INFO": 20, "WARNING": 30, "ERROR": 40, "CRITICAL": 50,
+}
+
+
+def _resolve_log_path() -> Path:
+    """解析日志文件路径。
+
+    优先级：
+      1. LOG_FILE env（绝对路径直接用，相对路径走 get_logs_dir()）
+      2. 默认 get_logs_dir() / LOG_FILE_DEFAULT_NAME
+    """
+    raw = os.environ.get("LOG_FILE", "")
+    if raw:
+        p = Path(raw)
+        if not p.is_absolute():
+            p = get_logs_dir() / raw
+        return p
+    from util.constants import LOG_FILE_DEFAULT_NAME
+    return get_logs_dir() / LOG_FILE_DEFAULT_NAME
+
+
+def tail_log_file(tail: int = DEFAULT_TAIL, min_level: str = "INFO") -> dict:
+    """读日志文件末尾 tail 行，过滤 level >= min_level。
+
+    Returns:
+        {
+            "log_file": str,
+            "exists": bool,
+            "total_lines": int,
+            "returned_lines": int,
+            "lines": [str, ...],
+            "min_level": str,
+        }
+    """
+    log_path = _resolve_log_path()
+    if not log_path.exists():
+        return {
+            "log_file": str(log_path),
+            "exists": False,
+            "total_lines": 0,
+            "returned_lines": 0,
+            "lines": [],
+            "min_level": min_level,
+        }
+
+    text = log_path.read_text(encoding="utf-8", errors="replace")
+    all_lines = text.splitlines()
+    last_n = all_lines[-tail:] if tail > 0 else all_lines
+    threshold = _LEVEL_ORDER.get(min_level.upper(), 20)
+
+    filtered: list[str] = []
+    for line in last_n:
+        # 格式: "2026-09-15 12:34:56 [alert-contract-expiring-hr] INFO message"
+        # 取第 4 个 token (INFO/DEBUG/...)
+        parts = line.split()
+        if len(parts) >= 4 and parts[1].count(":") >= 2 and parts[3] in _LEVEL_ORDER:
+            line_level = parts[3]
+            if _LEVEL_ORDER.get(line_level, 0) >= threshold:
+                filtered.append(line)
+        else:
+            # 非标准行 / 解析不到 level：保留
+            filtered.append(line)
+
+    return {
+        "log_file": str(log_path),
+        "exists": True,
+        "total_lines": len(all_lines),
+        "returned_lines": len(filtered),
+        "lines": filtered,
+        "min_level": min_level,
+    }