syslog

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原文：https://pkg.go.dev/log/syslog@go1.23.0

Package syslog provides a simple interface to the system log service. It can send messages to the syslog daemon using UNIX domain sockets, UDP or TCP.

​ syslog包提供了一个简单的接口来访问系统日志服务。它可以使用 UNIX 域套接字、UDP 或 TCP 发送消息到 syslog 守护进程。

Only one call to Dial is necessary. On write failures, the syslog client will attempt to reconnect to the server and write again.

​ 只需要调用一次 Dial函数。在写入失败时，syslog 客户端将尝试重新连接服务器并重试写入。

The syslog package is frozen and is not accepting new features. Some external packages provide more functionality. See:

​ syslog 包被冻结，不再接受新功能。一些外部包提供更多功能。参见：

https://godoc.org/?q=syslog

常量

This section is empty.

变量

This section is empty.

函数

func NewLogger

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func NewLogger(p Priority, logFlag int) (*log.Logger, error)

NewLogger creates a log.Logger whose output is written to the system log service with the specified priority, a combination of the syslog facility and severity. The logFlag argument is the flag set passed through to log.New to create the Logger.

​ NewLogger函数创建一个 log.Logger，其输出被写入具有指定优先级的系统日志服务，该优先级是 syslog 设施和严重性的组合。logFlag 参数是传递给 log.New 以创建 Logger 的 flag 集。

类型

type Priority

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type Priority int

The Priority is a combination of the syslog facility and severity. For example, LOG_ALERT | LOG_FTP sends an alert severity message from the FTP facility. The default severity is LOG_EMERG; the default facility is LOG_KERN.

​ Priority 是 syslog 设施和严重性的组合。例如，LOG_ALERT | LOG_FTP 从 FTP 设施发送警报严重性消息。默认的严重性为 LOG_EMERG，默认的设施为 LOG_KERN。

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const (

    // From /usr/include/sys/syslog.h.
	// These are the same on Linux, BSD, and OS X.
   	// 来自 /usr/include/sys/syslog.h。
	// 在 Linux、BSD 和 OS X 上相同。
	LOG_EMERG Priority = iota
	LOG_ALERT
	LOG_CRIT
	LOG_ERR
	LOG_WARNING
	LOG_NOTICE
	LOG_INFO
	LOG_DEBUG
)
const (

    // From /usr/include/sys/syslog.h.
	// These are the same up to LOG_FTP on Linux, BSD, and OS X.
    //来自/usr/include/sys/syslog.h。
	// 这些在Linux、BSD和OS X上与LOG_FTP相同。  
	LOG_KERN Priority = iota << 3
	LOG_USER
	LOG_MAIL
	LOG_DAEMON
	LOG_AUTH
	LOG_SYSLOG
	LOG_LPR
	LOG_NEWS
	LOG_UUCP
	LOG_CRON
	LOG_AUTHPRIV
	LOG_FTP

	LOG_LOCAL0
	LOG_LOCAL1
	LOG_LOCAL2
	LOG_LOCAL3
	LOG_LOCAL4
	LOG_LOCAL5
	LOG_LOCAL6
	LOG_LOCAL7
)

type Writer

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type Writer struct {
    // 包含已过滤或未导出的字段
}

A Writer is a connection to a syslog server.

​ Writer 是与 syslog 服务器的连接。

func Dial

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func Dial(network, raddr string, priority Priority, tag string) (*Writer, error)

Dial establishes a connection to a log daemon by connecting to address raddr on the specified network. Each write to the returned writer sends a log message with the facility and severity (from priority) and tag. If tag is empty, the os.Args[0] is used. If network is empty, Dial will connect to the local syslog server. Otherwise, see the documentation for net.Dial for valid values of network and raddr.

​ Dial函数通过在指定网络上连接到地址 raddr 来建立与日志守护程序的连接。对返回的 Writer 的每次写入都会使用设施和严重性(从 priority)和标记发送日志消息。如果标记为空，则使用 os.Args[0]。如果 network 为空，则 Dial 将连接到本地 syslog 服务器。否则，请参见 net.Dial 的文档以获取 network 和 raddr 的有效值。

Dial Example
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package main

import (
	"fmt"
	"log"
	"log/syslog"
)

func main() {
	sysLog, err := syslog.Dial("tcp", "localhost:1234",
		syslog.LOG_WARNING|syslog.LOG_DAEMON, "demotag")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Fprintf(sysLog, "This is a daemon warning with demotag.")
	sysLog.Emerg("And this is a daemon emergency with demotag.")
}

func New

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func New(priority Priority, tag string) (*Writer, error)

New establishes a new connection to the system log daemon. Each write to the returned writer sends a log message with the given priority (a combination of the syslog facility and severity) and prefix tag. If tag is empty, the os.Args[0] is used.

​ New 函数用于建立与系统日志守护进程的新连接。返回的 writer 对象可用于向日志守护进程发送日志消息，其中每个消息都具有给定的优先级(syslog 的设施和严重性的组合)和前缀标签。如果标签为空，则使用 os.Args[0]。

(*Writer) Alert

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func (w *Writer) Alert(m string) error

Alert logs a message with severity LOG_ALERT, ignoring the severity passed to New.

​ Alert 方法以 LOG_ALERT 严重性记录消息，忽略在 New 函数传递的严重性。

(*Writer) Close

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func (w *Writer) Close() error

Close closes a connection to the syslog daemon.

​ Close 方法用于关闭与 syslog 守护进程的连接。

(*Writer) Crit

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func (w *Writer) Crit(m string) error

Crit logs a message with severity LOG_CRIT, ignoring the severity passed to New.

​ Crit 方法以 LOG_CRIT 严重性记录消息，忽略在 New 函数传递的严重性。

(*Writer) Debug

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func (w *Writer) Debug(m string) error

Debug logs a message with severity LOG_DEBUG, ignoring the severity passed to New.

​ Debug 方法以 LOG_DEBUG 严重性记录消息，忽略在 New 函数传递的严重性。

(*Writer) Emerg

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func (w *Writer) Emerg(m string) error

Emerg logs a message with severity LOG_EMERG, ignoring the severity passed to New.

​ Emerg 方法以 LOG_EMERG 严重性记录消息，忽略在 New 函数传递的严重性。

(*Writer) Err

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func (w *Writer) Err(m string) error

Err logs a message with severity LOG_ERR, ignoring the severity passed to New.

​ Err 方法以 LOG_ERR 严重性记录消息，忽略在 New 方法传递的严重性。

(*Writer) Info

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func (w *Writer) Info(m string) error

Info logs a message with severity LOG_INFO, ignoring the severity passed to New.

​ Info方法使用 LOG_INFO 严重性记录一条消息，忽略在 New 方法传递的严重性。

(*Writer) Notice

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func (w *Writer) Notice(m string) error

Notice logs a message with severity LOG_NOTICE, ignoring the severity passed to New.

​ Notice方法使用 LOG_NOTICE 严重性记录一条消息，忽略在 New 方法传递的严重性。

(*Writer) Warning

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func (w *Writer) Warning(m string) error

Warning logs a message with severity LOG_WARNING, ignoring the severity passed to New.

​ Warning方法使用 LOG_WARNING 严重性记录一条消息，忽略在 New 方法传递的严重性。

(*Writer) Write

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func (w *Writer) Write(b []byte) (int, error)

Write sends a log message to the syslog daemon.

​ Write方法将一条日志消息发送到系统日志守护程序(syslog daemon)。

Notes

Bugs

  • This package is not implemented on Windows. As the syslog package is frozen, Windows users are encouraged to use a package outside of the standard library. For background, see https://golang.org/issue/1108.
  • 该包在 Windows 上没有实现。由于 syslog 包被冻结，因此鼓励 Windows 用户使用标准库之外的包。有关背景，请参见 https://golang.org/issue/1108。
  • This package is not implemented on Plan 9.
  • 该包在 Plan 9 上没有实现。
最后修改 October 10, 2024: 更新 (a4b8f85)