logger/logsystem.go


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package logger

import (
    "io"
    "log"
    "sync/atomic"
)

// NewStdLogSystem creates a LogSystem that prints to the given writer.
// The flag values are defined package log.
func NewStdLogSystem(writer io.Writer, flags int, level LogLevel) LogSystem {
    logger := log.New(writer, "", flags)
    return &stdLogSystem{logger, uint32(level)}
}

type stdLogSystem struct {
    logger *log.Logger
    level  uint32
}

func (t *stdLogSystem) LogPrint(level LogLevel, msg string) {
    t.logger.Print(msg)
}

func (t *stdLogSystem) SetLogLevel(i LogLevel) {
    atomic.StoreUint32(&t.level, uint32(i))
}

func (t *stdLogSystem) GetLogLevel() LogLevel {
    return LogLevel(atomic.LoadUint32(&t.level))
}