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A file change monitor that pushes notifications via WeChat

Project description

wxwatcher

PyPI Python License

文件变更监控工具:检测到变化时,通过微信推送通知。

特性

  • 两阶段扫描:先 stat 快速检测,仅对疑似变化文件计算 SHA256
  • 自动忽略 .git__pycache__.venv 等常见目录
  • 支持按扩展名过滤、自定义忽略规则
  • 分批推送,避免消息过长
  • CLI 参数 / 环境变量 / 配置文件 / 默认值四层配置
  • 忽略规则支持通配符(*.log)和正则(regex:\.tmp\d+$
  • 日志自动写入 ~/.wxwatcher/file_watcher.log

安装

pip install wxwatcher

如需使用 YAML 配置文件:

pip install wxwatcher[config]

快速开始

监控当前目录

wxwatcher

监控指定目录

wxwatcher /path/to/watch

查看帮助

$ wxwatcher --help
usage: wxwatcher [-h] [-v] [-i INTERVAL] [--push-url PUSH_URL]
                 [--to-user TO_USER] [--max-batch MAX_BATCH]
                 [--ext EXT] [--ignore IGNORE] [--log-file LOG_FILE]
                 [--verbose] [--quiet] [--knowly-url KNOWLY_URL]
                 [--no-knowly] [--config CONFIG] [--no-config]
                 [dir]

文件变更监控工具,检测到变化时通过微信推送通知

positional arguments:
  dir                   监控目录(默认当前目录)

options:
  -h, --help            show this help message and exit
  -v, --version         show program's version number and exit
  -i INTERVAL, --interval INTERVAL
                        轮询间隔(秒,默认 30  --push-url PUSH_URL   推送 API 地址
  --to-user TO_USER     接收人(默认 @all)
  --max-batch MAX_BATCH
                        单批最大变更数(默认 50  --ext EXT             仅监控指定扩展名(逗号分隔,如 py,md)
  --ignore IGNORE       忽略的目录/文件名(逗号分隔,如 dist,build)
  --log-file LOG_FILE   日志文件路径
  --verbose             输出 DEBUG 级别日志
  --quiet               仅输出 WARNING 及以上
  --knowly-url KNOWLY_URL
                        Knowly 上传 API 地址
  --no-knowly           禁用上传到 Knowly
  --config CONFIG       配置文件路径(默认自动搜索)
  --no-config           跳过配置文件加载

配置

优先级:CLI 参数 > 环境变量 > 配置文件 > 默认值

YAML 配置文件

搜索顺序:

  1. 当前目录及父目录中的 .wxwatcher.ymlwxwatcher.yml
  2. ~/.wxwatcher/config.yml
  3. ~/.config/wxwatcher/config.yml

使用 --config <path> 指定具体文件,或 --no-config 跳过配置文件加载。

示例 .wxwatcher.yml

push_url: "https://api.example.com/push"
poll_interval: 15
to_user: "@all"
ignore:
  - "*.log"
  - "regex:\\.tmp\\d+$"
  - dist
  - build
ext:
  - py
  - md
log_file: "~/.wxwatcher/wxwatcher.log"

环境变量

环境变量 说明 默认值
WXWATCHER_DIR 监控目录 当前目录
WXWATCHER_INTERVAL 轮询间隔(秒) 30
WXWATCHER_PUSH_URL 推送 API 地址 必须配置
WXWATCHER_TO_USER 接收人 @all
WXWATCHER_MAX_BATCH 单批最大变更数 50
WXWATCHER_LOG_FILE 日志文件路径 ~/.wxwatcher/file_watcher.log
WXWATCHER_IGNORE 额外忽略模式(逗号分隔)
WXWATCHER_EXT 仅监控扩展名(逗号分隔) 全部

忽略规则

--ignore 和环境变量 WXWATCHER_IGNORE 支持三种模式:

类型 示例 说明
精确匹配 .git, node_modules 文件名或路径段完全匹配
通配符 *.log, ~*, tmp_*_backup *?[] 自动识别为 fnmatch
正则 regex:\.tmp\d+$ regex: 前缀,匹配文件名或完整路径

也可通过 CLI 参数控制(优先级高于环境变量):

参数 说明
--ignore 忽略的目录/文件名(逗号分隔,如 dist,build
--verbose 输出 DEBUG 级别日志
--quiet 仅输出 WARNING 及以上

示例

export WXWATCHER_DIR=/data
export WXWATCHER_INTERVAL=10
export WXWATCHER_PUSH_URL=https://api.example.com/push
export WXWATCHER_IGNORE="node_modules,.idea"
wxwatcher

只监控特定文件类型:

export WXWATCHER_EXT="py,txt,md"
wxwatcher

systemd 服务

wxwatcher.service 复制到 systemd 目录:

sudo cp wxwatcher.service /etc/systemd/system/

配置环境变量(推送地址等):

sudo mkdir -p /etc/wxwatcher
echo 'WXWATCHER_PUSH_URL=https://...' | sudo tee /etc/wxwatcher/environment

也可将 YAML 配置文件放在 ~/.wxwatcher/config.yml,服务启动时会自动加载。

启用并启动:

sudo systemctl daemon-reload
sudo systemctl enable --now wxwatcher
sudo journalctl -u wxwatcher -f

工作原理

每轮轮询(默认 30s)
  │
  ├─ fast_scan()          # os.walk + os.stat,不读文件内容
  │
  ├─ 对比 mtime / size    # 快速筛选疑似变化文件
  │
  ├─ sha256_file()        # 仅对疑似文件计算 hash,确认内容真正改变
  │
  └─ send_wechat()        # 分批推送到微信

大目录下性能表现良好:5000+ 文件的目录,每轮仅需毫秒级扫描,变化文件少时几乎零磁盘 IO。

推送消息示例

文件监控已启动
──────────
监控目录: project
文件数量: 1203
启动时间: 02:30:00
──────────
By: 苑广山的文件监控助手
文件变更  02:35:00
──────────
1. [新增] config.py (+2.1KB)
2. [修改] README.md (+120B)
3. [删除] old_file.txt
──────────
By: 苑广山的文件监控助手

开发

git clone https://github.com/yuanguangshan/wxwatcher.git
cd wxwatcher
pip install -e ".[dev]"
pytest

构建发行包:

python -m build

常见问题

Q: 需要安装 inotify 吗?
A: 不需要。wxwatcher 使用轮询方式,跨平台兼容,无需系统级通知服务。

Q: 可以推送其他消息平台吗?
A: 当前仅支持微信推送接口。可以通过 --push-url 指定兼容该接口的其他服务。

Q: 大量文件时会不会很卡?
A: 不会。采用两阶段扫描,每轮只读元数据,仅疑似变化文件才计算 hash。

Q: 如何停止监控?
A: Ctrl+C 即可安全退出,程序会打印退出日志。

依赖

  • Python >= 3.9
  • httpx
  • pyyaml(可选,仅在使用 YAML 配置文件时需要)

License

MIT

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