Documentation
¶
Overview ¶
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.
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
Index ¶
- func NewLogger(p Priority, logFlag int) (*log.Logger, error)
- type Priority
- type Writer
- func (w *Writer) Alert(m string) error
- func (w *Writer) Close() error
- func (w *Writer) Crit(m string) error
- func (w *Writer) Debug(m string) error
- func (w *Writer) Emerg(m string) error
- func (w *Writer) Err(m string) error
- func (w *Writer) Info(m string) error
- func (w *Writer) Notice(m string) error
- func (w *Writer) Warning(m string) error
- func (w *Writer) Write(b []byte) (int, error)
- Bugs
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func NewLogger ¶
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.
Types ¶
type Priority ¶
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 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 ¶
type Writer struct {
// contains filtered or unexported fields
}
A Writer is a connection to a syslog server.
func Dial ¶
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.
Example ¶
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.")
}
Output:
func New ¶
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.
func (*Writer) Alert ¶
Alert logs a message with severity LOG_ALERT, ignoring the severity passed to New.
func (*Writer) Crit ¶
Crit logs a message with severity LOG_CRIT, ignoring the severity passed to New.
func (*Writer) Debug ¶
Debug logs a message with severity LOG_DEBUG, ignoring the severity passed to New.
func (*Writer) Emerg ¶
Emerg logs a message with severity LOG_EMERG, ignoring the severity passed to New.
func (*Writer) Info ¶
Info logs a message with severity LOG_INFO, ignoring the severity passed to New.
func (*Writer) Notice ¶
Notice logs a message with severity LOG_NOTICE, ignoring the severity passed to New.
func (*Writer) Warning ¶
Warning logs a message with severity LOG_WARNING, ignoring the severity passed to New.
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.
This package is not implemented on Plan 9.
Source Files