finalizing logging and multierror

logging/funcs_multilogger_mgr_linux.go

@@ -0,0 +1,118 @@
+package logging
+
+import (
+	`os`
+
+	sysd `github.com/coreos/go-systemd/journal`
+	`github.com/google/uuid`
+	`r00t2.io/sysutils/paths`
+)
+
+/*
+	AddDefaultLogger adds a default Logger (as would be determined by GetLogger) to a MultiLogger.
+
+	identifier is a string to use to identify the added Logger in MultiLogger.Loggers.
+	If empty, one will be automatically generated.
+*/
+func (m *MultiLogger) AddDefaultLogger(identifier string, logPaths ...string) (err error) {
+
+	var l Logger
+	var exists bool
+
+	if identifier == "" {
+		identifier = uuid.New().String()
+	}
+
+	if _, exists = m.Loggers[identifier]; exists {
+		err = ErrExistingLogger
+		return
+	}
+
+	if l, err = GetLogger(m.EnableDebug, m.Prefix, logPaths...); err != nil {
+		return
+	}
+
+	m.Loggers[identifier] = l
+
+	return
+}
+
+/*
+	AddSysdLogger adds a SystemDLogger to a MultiLogger.
+
+	identifier is a string to use to identify the added SystemDLogger in MultiLogger.Loggers.
+	If empty, one will be automatically generated.
+*/
+func (m *MultiLogger) AddSysdLogger(identifier string) (err error) {
+
+	var exists bool
+
+	if identifier == "" {
+		identifier = uuid.New().String()
+	}
+
+	if _, exists = m.Loggers[identifier]; exists {
+		err = ErrExistingLogger
+		return
+	}
+
+	if !sysd.Enabled() {
+		err = ErrNoSysD
+		return
+	}
+
+	m.Loggers[identifier] = &SystemDLogger{
+		EnableDebug: m.EnableDebug,
+		Prefix:      m.Prefix,
+	}
+	m.Loggers[identifier].Setup()
+
+	m.Loggers[identifier].Info("logger initialized of type %T with prefix %v", m.Loggers[identifier], m.Loggers[identifier].GetPrefix())
+
+	return
+}
+
+/*
+	AddSyslogLogger adds a SyslogLogger to a MultiLogger.
+
+	identifier is a string to use to identify the added SyslogLogger in MultiLogger.Loggers.
+	If empty, one will be automatically generated.
+*/
+func (m *MultiLogger) AddSyslogLogger(identifier string) (err error) {
+
+	var exists bool
+	var hasSyslog bool
+	var stat os.FileInfo
+	var devlogPath string = devlog
+
+	if identifier == "" {
+		identifier = uuid.New().String()
+	}
+
+	if _, exists = m.Loggers[identifier]; exists {
+		err = ErrExistingLogger
+		return
+	}
+
+	if hasSyslog, stat, err = paths.RealPathExistsStat(&devlogPath); hasSyslog && err != nil {
+		return
+	} else if !hasSyslog {
+		err = ErrNoSyslog
+		return
+	}
+
+	if stat.Mode().IsRegular() {
+		err = ErrInvalidDevLog
+		return
+	}
+
+	m.Loggers[identifier] = &SyslogLogger{
+		EnableDebug: m.EnableDebug,
+		Prefix:      m.Prefix,
+	}
+	m.Loggers[identifier].Setup()
+
+	m.Loggers[identifier].Info("logger initialized of type %T with prefix %v", m.Loggers[identifier], m.Loggers[identifier].GetPrefix())
+
+	return
+}