1// Copyright 2013, Örjan Persson. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package logging
6
7// defaultBackend is the backend used for all logging calls.
8var defaultBackend LeveledBackend
9
10// Backend is the interface which a log backend need to implement to be able to
11// be used as a logging backend.
12type Backend interface {
13	Log(Level, int, *Record) error
14}
15
16// Set backend replaces the backend currently set with the given new logging
17// backend.
18func SetBackend(backends ...Backend) LeveledBackend {
19	var backend Backend
20	if len(backends) == 1 {
21		backend = backends[0]
22	} else {
23		backend = MultiLogger(backends...)
24	}
25
26	defaultBackend = AddModuleLevel(backend)
27	return defaultBackend
28}
29
30// SetLevel sets the logging level for the specified module. The module
31// corresponds to the string specified in GetLogger.
32func SetLevel(level Level, module string) {
33	defaultBackend.SetLevel(level, module)
34}
35
36// GetLevel returns the logging level for the specified module.
37func GetLevel(module string) Level {
38	return defaultBackend.GetLevel(module)
39}
40