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@zenweb/log

v5.5.0

Published

Zenweb Log module

Readme

log - 日志

ZenWeb 日志支持

依赖模块

  • @zenweb/meta(可选)— 提供 ctx.requestIdctx.traceId,未安装则日志中的 rid / tid 字段为空

配置项

| 配置项 | 类型 | 默认值 | 功能 | | ----- | --- | ----- | ---- | | dir | string | env.LOG_DIR | 日志存储目录,不设置则不存储到磁盘 | | flushInterval | number | 1000 | 日志从内存存储到磁盘中的间隔时间(毫秒) | | maxBufferLength | number | 1000 | 最大缓冲长度,超过设定长度不管有没有到落盘时间都会被保存到磁盘中 | | fields | { [key: string]: any; } | { name: core.name } | 附加字段值,每次记录日志都会附加在日志中的值 |

其他透传选项请参考 zenlog.jsStreamOptionDirBufferStreamOption

Core 挂载项

| 挂载项 | 类型 | 功能 | | ----- | --- | ---- | | log | Logger | 应用级别的日志记录 |

Context 挂载项

| 挂载项 | 类型 | 功能 | | ----- | --- | ---- | | log | Logger | 请求级别的日志记录(按请求缓存),会附加字段信息 { method, url, host, ip, rid, tid } |

全局模式

| 方法 | 功能 | | ----- | ---- | | $getLogger() | 取得 Logger 对象。若处于请求中则返回当前 Context 的 Logger,否则返回 Core 中的根 Logger | | $log | 经代理的快捷对象,在调用时动态解析为上述 Logger,可在任意位置直接使用 |

异常捕获

  • unhandledRejection:自动记录到根 Logger
  • Koa error 事件:err.expose === true 的错误视为客户端可见错误,跳过记录;其余按上下文 Logger 记录

示例

import { $initCore } from '@zenweb/core';
import meta from '@zenweb/meta';
import log from '@zenweb/log';

$initCore()
  .setup(log({ dir: process.cwd() }))
  .setup(meta({ traceId: true }))
  .start();