netlog

logging package

How to use?

1. Determine the log output method.

• output to any log file
  • ex. /var/log/example.log

  var logOutput string
  logOutput = "file:///var/log/example.log"
  

• output via syslog in local
  • ex. facility: sys, tag: example

  var logOutput string
  logOutput = "net:///?facility=sys&tag=example"
  

• output via syslog with TCP connection (Windows OS is not supported)
  • ex. facility: sys, tag: example

  var logOutput string
  logOutput = tcp://localhost:601/?facility=sys&tag=example"
  

2. Initialize using log output destination.

   import (
   	"log"
   )
   
   func main() {
   	if logOutput != "" {
   		if err := netlog.SetOutputURL(logOutput); err != nil {
   			log.Fatal("log output destination:", err)
   		}
   	}
   }
   

3. Output logs.

   import (
   	"github.com/lufia/netlog"
   )
   
   func example() {
       // netlog.SetOutputURL(logOutput, debugMode)
       netlog.Debug("output if the debug flag is enabled at initialization")
   
       netlog.Info("this is info message")
       netlog.Warning("this is warning message")
       netlog.Err("this is error message")
       netlog.Crit("this is critical error message. process AbEnd here")
   }
   

Log level

func	Level (linux/unix)	Msg ID (windows)
netlog.Crit()	LOG_CRIT	4001
netlog.Err()	LOG_ERR	3001
netlog.Warning()	LOG_WARNING	2001
netlog.Info()	LOG_INFO	1001
netlog.Debug()	LOG_DEBUG	1001