134 lines
3.1 KiB
Go
134 lines
3.1 KiB
Go
package logging
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import (
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`path`
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`github.com/google/uuid`
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`r00t2.io/sysutils/paths`
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)
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/*
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GetMultiLogger returns a MultiLogger.
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If you call GetLogger, you will only get a single ("best") logger your system supports.
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If you want to log to multiple Logger destinations at once (or want to log to an explicit Logger type),
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use GetMultiLogger.
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Remember to add at least one Logger (e.g. MultiLogger.AddStdLogger), otherwise no entries will actually be logged.
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If you want to modify e.g. if debug is enabled for a specific Logger, reference the Logger directly (e.g. MultiLogger.Loggers[identifier].SetDebug(false)).
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*/
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func GetMultiLogger(enableDebug bool, prefix string) (m *MultiLogger) {
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m = &MultiLogger{
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EnableDebug: enableDebug,
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Prefix: "",
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Loggers: make(map[string]Logger),
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}
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if prefix != "\x00" {
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m.Prefix = prefix
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}
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return
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}
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/*
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AddStdLogger adds a StdLogger to a MultiLogger.
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identifier is a string to use to identify the added StdLogger in MultiLogger.Loggers.
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If empty, one will be automatically generated.
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*/
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func (m *MultiLogger) AddStdLogger(identifier string) (err error) {
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var exists bool
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if identifier == "" {
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identifier = uuid.New().String()
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}
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if _, exists = m.Loggers[identifier]; exists {
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err = ErrExistingLogger
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return
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}
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m.Loggers[identifier] = &StdLogger{
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Logger: nil,
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EnableDebug: m.EnableDebug,
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Prefix: m.Prefix,
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}
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m.Loggers[identifier].Setup()
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m.Loggers[identifier].Info("logger initialized of type %T with prefix %v", m.Loggers[identifier], m.Loggers[identifier].GetPrefix())
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return
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}
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/*
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AddFileLogger adds a FileLogger to a MultiLogger.
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identifier is a string to use to identify the added FileLogger in MultiLogger.Loggers.
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If empty, one will be automatically generated.
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logfilePath is a string for the path to the desired logfile.
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*/
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func (m *MultiLogger) AddFileLogger(identifier, logfilePath string) (err error) {
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var exists bool
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var success bool
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var dirPath string
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if identifier == "" {
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identifier = uuid.New().String()
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}
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if _, exists = m.Loggers[identifier]; exists {
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err = ErrExistingLogger
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return
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}
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if exists, _ = paths.RealPathExists(&logfilePath); !exists {
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if success, err = testOpen(logfilePath); err != nil {
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return
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} else if !success {
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dirPath = path.Dir(logfilePath)
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if err = paths.MakeDirIfNotExist(dirPath); err != nil {
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return
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}
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if success, err = testOpen(dirPath); err != nil {
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return
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} else if !success {
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err = ErrInvalidFile
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return
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}
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}
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}
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m.Loggers[identifier] = &FileLogger{
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StdLogger: StdLogger{
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Logger: nil,
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EnableDebug: m.EnableDebug,
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Prefix: m.Prefix,
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},
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Path: logfilePath,
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}
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m.Loggers[identifier].Setup()
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m.Loggers[identifier].Info("logger initialized of type %T with prefix %v", m.Loggers[identifier], m.Loggers[identifier].GetPrefix())
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return
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}
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// RemoveLogger will let you remove a Logger from MultiLogger.Loggers.
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func (m *MultiLogger) RemoveLogger(identifier string) (err error) {
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var exists bool
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if _, exists = m.Loggers[identifier]; !exists {
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err = ErrNoEntry
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return
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}
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delete(m.Loggers, identifier)
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return
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}
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