66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
// Copyright 2013, Örjan Persson. All rights reserved.
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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 logging
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// TODO remove Level stuff from the multi logger. Do one thing.
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// multiLogger is a log multiplexer which can be used to utilize multiple log
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// backends at once.
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type multiLogger struct {
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backends []LeveledBackend
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}
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// MultiLogger creates a logger which contain multiple loggers.
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func MultiLogger(backends ...Backend) LeveledBackend {
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var leveledBackends []LeveledBackend
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for _, backend := range backends {
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leveledBackends = append(leveledBackends, AddModuleLevel(backend))
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}
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return &multiLogger{leveledBackends}
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}
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// Log passes the log record to all backends.
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func (b *multiLogger) Log(level Level, calldepth int, rec *Record) (err error) {
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for _, backend := range b.backends {
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if backend.IsEnabledFor(level, rec.Module) {
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// Shallow copy of the record for the formatted cache on Record and get the
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// record formatter from the backend.
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r2 := *rec
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if e := backend.Log(level, calldepth+1, &r2); e != nil {
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err = e
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}
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}
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}
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return
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}
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// GetLevel returns the highest level enabled by all backends.
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func (b *multiLogger) GetLevel(module string) Level {
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var level Level
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for _, backend := range b.backends {
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if backendLevel := backend.GetLevel(module); backendLevel > level {
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level = backendLevel
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}
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}
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return level
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}
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// SetLevel propagates the same level to all backends.
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func (b *multiLogger) SetLevel(level Level, module string) {
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for _, backend := range b.backends {
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backend.SetLevel(level, module)
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}
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}
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// IsEnabledFor returns true if any of the backends are enabled for it.
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func (b *multiLogger) IsEnabledFor(level Level, module string) bool {
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for _, backend := range b.backends {
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if backend.IsEnabledFor(level, module) {
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return true
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}
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}
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return false
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}
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