Logger(日志) 中间件

Logger 中间件记录了每一个请求的信息。

用法

e.Use(middleware.Logger())

输出样例

{
"time":"2017-01-12T08:58:07.372015644-08:00",
"remote_ip":"::1",
"host":"localhost:1323",
"method":"GET",
"uri":"/",
"status":200,
"latency":14743,
"latency_human":
"14.743µs",
"bytes_in":0,
"bytes_out":2
}

自定义配置

用法

e.Use(middleware.LoggerWithConfig(middleware.LoggerConfig{
  Format:"method=${method}, uri=${uri}, status=${status}\n",
  }))

输出样例

method=GET, uri=/, status=200

配置

LoggerConfig struct{
  // Skipper 定义了一个跳过中间件的函数.
  Skipper Skipper

  // 日志的格式可以使用下面的标签定义。:
  //
  // - time_unix
  // - time_unix_nano
  // - time_rfc3339
  // - time_rfc3339_nano
  // - id (Request ID - Not implemented)
  // - remote_ip
  // - uri
  // - host
  // - method
  // - path
  // - referer
  // - user_agent
  // - status
  // - latency (In microseconds)
  // - latency_human (Human readable)
  // - bytes_in (Bytes received)
  // - bytes_out (Bytes sent)
  // - header:<name>
  // - query:<name>
  // - form:<name>
  //
  // 例如 "${remote_ip} ${status}"
  //
  // 可选。默认值是 DefaultLoggerConfig.Format.
  Format string `json:"format"`
  // Output 是记录日志的位置。
  // 可选。默认值是 os.Stdout.
  Output io.Writer
}

默认配置

DefaultLoggerConfig = LoggerConfig
{
  Skipper: defaultSkipper,
  Format: `{"time":"${time_rfc3339_nano}","remote_ip":"${remote_ip}","host":"${host}",`
    +  `"method":"${method}","uri":"${uri}","status":${status}, "latency":${latency},`
    +  `"latency_human":"${latency_human}","bytes_in":${bytes_in},`
    +  `"bytes_out":${bytes_out}}`
    +  "\n",
  Output: os.Stdout
}

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