Go 语言

Go 语言教程 Go 语言环境安装 Go 语言结构 Go 语言基础语法 Go 语言数据类型 Go 语言变量 Go 语言常量 Go 语言运算符 Go 语言条件语句 Go 语言 if 语句 Go 语言 if...else 语句 Go 语言 if 语句嵌套 Go 语言 switch 语句 Go 语言 select 语句 Go 语言循环语句 Go 语言 for 循环 Go 语言循环嵌套 Go 语言 break 语句 Go 语言 continue 语句 Go 语言 goto 语句 Go 语言函数 Go 语言函数值传递值 Go 语言函数引用传递值 Go 语言函数作为值 Go 语言函数闭包 Go 语言函数方法 Go 语言变量作用域 Go 语言数组 Go 语言多维数组 Go 语言向函数传递数组 Go 语言指针 Go 语言指针数组 Go 语言指向指针的指针 Go 语言指针作为函数参数 Go 语言结构体 Go 语言切片(Slice) Go 语言范围(Range) Go 语言Map(集合) Go 语言递归函数 Go 语言类型转换 Go 语言接口 Go 错误处理 Go 语言开发工具Go 语言标准库

Go 语言标准库

package syslog

import "log/syslog"

syslog 包提供一个简单的系统日志服务的接口。 It can send messages to the syslog daemon using UNIX domain sockets, UDP or TCP.

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

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

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

Examples

Package Files

doc.go syslog.go syslog_unix.go

func NewLogger Uses

❖
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. The logFlag argument is the flag set passed through to log.New to create the Logger.

type Priority Uses

❖
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.

❖
const (

    // From /usr/include/sys/syslog.h.
    // These are the same on Linux, BSD, and OS X.
    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.
    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 Uses

❖
type Writer struct {
    // contains filtered or unexported fields
}

A Writer is a connection to a syslog server.

func Dial Uses

❖
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 given facility, severity and tag. 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.

Example

Code:play  

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 Uses

❖
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 and prefix.

func (*Writer) Alert Uses

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

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

func (*Writer) Close Uses

❖
func (w *Writer) Close() error

Close closes a connection to the syslog daemon.

func (*Writer) Crit Uses

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

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

func (*Writer) Debug Uses

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

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

func (*Writer) Emerg Uses

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

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

func (*Writer) Err Uses

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

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

func (*Writer) Info Uses

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

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

func (*Writer) Notice Uses

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

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

func (*Writer) Warning Uses

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

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

func (*Writer) Write Uses

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

Write sends a log message to the syslog daemon.

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://github.com/golang/go/blob/master/issue/1108.

☞ This package is not implemented on Plan 9.

☞ This package is not implemented on NaCl (Native Client).