90 lines
1.8 KiB
Go
90 lines
1.8 KiB
Go
// SPDX-License-Identifier: BSD-3-Clause
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package logawl
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import (
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"errors"
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"io"
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"sync"
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"sync/atomic"
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)
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type (
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// Level is the logging level.
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Level int32
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// Logger is the overall logger.
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Logger struct {
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Out io.Writer
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Prefix string
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buf []byte
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Mu sync.Mutex
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Level Level
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isDiscard int32
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}
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)
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// SetLevel stores whatever input value is in mem address of l.level.
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func (l *Logger) SetLevel(level Level) {
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atomic.StoreInt32((*int32)(&l.Level), int32(level))
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}
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// GetLevel gets the logger level.
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func (l *Logger) GetLevel() Level {
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return l.level()
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}
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// Retrieves whatever was stored in mem address of l.level.
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func (l *Logger) level() Level {
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return Level(atomic.LoadInt32((*int32)(&l.Level)))
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}
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// UnMarshalLevel unmarshalls the int value of level for writing the header.
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func (l *Logger) UnMarshalLevel(lv Level) (string, error) {
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switch lv {
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case ErrLevel:
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return "ERROR ", nil
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case WarnLevel:
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return "WARN ", nil
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case InfoLevel:
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return "INFO ", nil
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case DebugLevel:
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return "DEBUG ", nil
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}
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return "", errInvalidLevel
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}
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// IsLevel returns true if the logger level is above the level given.
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func (l *Logger) IsLevel(level Level) bool {
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return l.level() >= level
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}
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// AllLevels is an array of all valid log levels.
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var AllLevels = []Level{
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ErrLevel,
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WarnLevel,
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InfoLevel,
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DebugLevel,
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}
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const (
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// ErrLevel is the fatal (error) log level.
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ErrLevel Level = iota
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// WarnLevel is for warning logs.
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//
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// Example: when one setting implies another, when a request fails but is retried.
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WarnLevel
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// InfoLevel is for saying what is going on when.
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// This is essentially the "verbose" option.
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//
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// When in doubt, use info.
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InfoLevel
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// DebugLevel is for spewing debug structs/interfaces.
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DebugLevel
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)
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var errInvalidLevel = errors.New("invalid log level")
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