README
¶
log
Base logger. Define different log level and logger interface
How to use
go get github.com/coreservice-io/log
example
package main
import (
"os"
"github.com/coreservice-io/log"
)
func main() {
l := log.NewBaseLogger()
//default logLevel is Info
l.SetLevel(log.TraceLevel)
//default output is StdOut
f, _ := os.Create("logFile")
l.SetOutput(f)
l.Traceln("trace", 1)
l.Debugln("debug", 2)
l.Infoln("info", 3)
l.Warnln("warn", 4)
l.Errorln("error", 5)
l.PrintLastN(1000, []log.LogLevel{})
//l.Fatalln("fatal", 6)
//l.Panicln("panic")
}
Documentation
¶
Index ¶
Constants ¶
View Source
const ( PanicTagStr logTag = "[PANI]" FatalTagStr logTag = "[FATA]" ErrorTagStr logTag = "[ERRO]" WarnTagStr logTag = "[WARN]" InfoTagStr logTag = "[INFO]" DebugTagStr logTag = "[DEBU]" TraceTagStr logTag = "[TRAC]" )
Variables ¶
This section is empty.
Functions ¶
func LogLevelToTag ¶
func LogLevelToTag(level LogLevel) logTag
Types ¶
type LogLevel ¶
type LogLevel int32
const ( // PanicLevel level, highest level of severity. Logs and then calls panic with the // message passed to Debug, Info, ... PanicLevel LogLevel = iota // FatalLevel level. Logs and then calls `logger.Exit(1)`. It will exit even if the // logging level is set to Panic. FatalLevel // ErrorLevel level. Logs. Used for errors that should definitely be noted. // Commonly used for hooks to send errors to an error tracking service. ErrorLevel // WarnLevel level. Non-critical entries that deserve eyes. WarnLevel // InfoLevel level. General operational entries about what's going on inside the // application. InfoLevel // DebugLevel level. Usually only enabled when debugging. Very verbose logging. DebugLevel // TraceLevel level. Designates finer-grained informational events than the Debug. TraceLevel )
func ParseLogLevel ¶
type Logger ¶
type Logger interface {
SetOutput(w io.Writer)
SetLevel(v LogLevel)
GetLevel() LogLevel
Traceln(i ...interface{})
Debugln(i ...interface{})
Infoln(i ...interface{})
Warnln(i ...interface{})
Errorln(i ...interface{})
Fatalln(i ...interface{})
Panicln(i ...interface{})
PrintLastN(int64, []LogLevel) //print out last n lines of logs with specified levels sorted by time
GetLastN(int64, []LogLevel) ([]string, error) //return last n lines of logs with specified levels sorted by time
}
Logger defines the logging interface.
func NewBaseLogger ¶
func NewBaseLogger() Logger
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