* add helper function to determine logger level Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
127 lines
2.9 KiB
Go
127 lines
2.9 KiB
Go
package logger
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import (
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"fmt"
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"os"
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)
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type Level int8
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const (
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// TraceLevel level. Designates finer-grained informational events than the Debug.
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TraceLevel Level = iota - 2
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// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
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DebugLevel
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// InfoLevel is the default logging priority.
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// General operational entries about what's going on inside the application.
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InfoLevel
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// WarnLevel level. Non-critical entries that deserve eyes.
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WarnLevel
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// ErrorLevel level. Logs. Used for errors that should definitely be noted.
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ErrorLevel
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// FatalLevel level. Logs and then calls `logger.Exit(1)`. highest level of severity.
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FatalLevel
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)
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func (l Level) String() string {
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switch l {
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case TraceLevel:
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return "trace"
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case DebugLevel:
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return "debug"
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case InfoLevel:
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return "info"
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case WarnLevel:
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return "warn"
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case ErrorLevel:
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return "error"
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case FatalLevel:
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return "fatal"
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}
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return ""
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}
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// Enabled returns true if the given level is at or above this level.
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func (l Level) Enabled(lvl Level) bool {
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return lvl >= l
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}
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// GetLevel converts a level string into a logger Level value.
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// returns an error if the input string does not match known values.
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func GetLevel(levelStr string) (Level, error) {
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switch levelStr {
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case TraceLevel.String():
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return TraceLevel, nil
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case DebugLevel.String():
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return DebugLevel, nil
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case InfoLevel.String():
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return InfoLevel, nil
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case WarnLevel.String():
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return WarnLevel, nil
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case ErrorLevel.String():
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return ErrorLevel, nil
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case FatalLevel.String():
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return FatalLevel, nil
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}
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return InfoLevel, fmt.Errorf("Unknown Level String: '%s', defaulting to InfoLevel", levelStr)
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}
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func Info(args ...interface{}) {
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DefaultLogger.Log(InfoLevel, args...)
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}
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func Infof(template string, args ...interface{}) {
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DefaultLogger.Logf(InfoLevel, template, args...)
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}
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func Trace(args ...interface{}) {
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DefaultLogger.Log(TraceLevel, args...)
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}
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func Tracef(template string, args ...interface{}) {
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DefaultLogger.Logf(TraceLevel, template, args...)
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}
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func Debug(args ...interface{}) {
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DefaultLogger.Log(DebugLevel, args...)
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}
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func Debugf(template string, args ...interface{}) {
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DefaultLogger.Logf(DebugLevel, template, args...)
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}
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func Warn(args ...interface{}) {
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DefaultLogger.Log(WarnLevel, args...)
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}
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func Warnf(template string, args ...interface{}) {
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DefaultLogger.Logf(WarnLevel, template, args...)
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}
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func Error(args ...interface{}) {
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DefaultLogger.Log(ErrorLevel, args...)
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}
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func Errorf(template string, args ...interface{}) {
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DefaultLogger.Logf(ErrorLevel, template, args...)
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}
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func Fatal(args ...interface{}) {
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DefaultLogger.Log(FatalLevel, args...)
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os.Exit(1)
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}
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func Fatalf(template string, args ...interface{}) {
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DefaultLogger.Logf(FatalLevel, template, args...)
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os.Exit(1)
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}
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// Returns true if the given level is at or above the current logger level
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func V(lvl Level, log Logger) bool {
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l := DefaultLogger
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if log != nil {
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l = log
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}
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return l.Options().Level >= lvl
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}
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