49 lines
899 B
Go
49 lines
899 B
Go
// Copyright (C) 2017 Michał Matczuk
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package log
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type filterLogger struct {
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level int
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logger Logger
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}
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// NewFilterLogger returns a Logger that accepts only log messages with
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// "level" value <= level. Currently there are four levels 0 - error, 1 - info,
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// 2 - debug, 3 - trace.
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func NewFilterLogger(logger Logger, level int) Logger {
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return filterLogger{
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level: level,
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logger: logger,
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}
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}
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func (p filterLogger) Log(keyvals ...interface{}) error {
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for i := 0; i < len(keyvals); i += 2 {
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k := keyvals[i]
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s, ok := k.(string)
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if !ok {
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continue
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}
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if s != "level" {
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continue
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}
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if i+1 >= len(keyvals) {
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break
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}
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v := keyvals[i+1]
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level, ok := v.(int)
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if !ok {
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break
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}
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if level > p.level {
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return nil
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}
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}
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return p.logger.Log(keyvals...)
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}
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