do bitmask better, add (COMPLETELY 100% EXPERIMENTAL NOT DONE YET) eventlog support to logger

logging/funcs_sysd_linux.go

@@ -0,0 +1,181 @@
+package logging
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/coreos/go-systemd/journal"
+)
+
+func (l *SystemDLogger) Setup() {
+
+	// NOOP
+	_ = ""
+
+}
+
+func (l *SystemDLogger) Shutdown() {
+
+	// NOOP
+	_ = ""
+
+}
+
+func (l *SystemDLogger) DoDebug(d bool) {
+	l.EnableDebug = d
+}
+
+func (l *SystemDLogger) SetPrefix(prefix string) {
+	l.Prefix = prefix
+}
+
+func (l *SystemDLogger) GetPrefix() (prefix string) {
+
+	prefix = l.Prefix
+
+	return
+}
+
+func (l *SystemDLogger) Alert(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriAlert)
+
+	return
+}
+
+func (l *SystemDLogger) Crit(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriCrit)
+
+	return
+}
+
+func (l *SystemDLogger) Debug(s string, v ...interface{}) (err error) {
+
+	if !l.EnableDebug {
+		return
+	}
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriDebug)
+
+	return
+}
+
+func (l *SystemDLogger) Emerg(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriEmerg)
+
+	return
+}
+
+func (l *SystemDLogger) Err(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriErr)
+
+	return
+}
+
+func (l *SystemDLogger) Info(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriInfo)
+
+	return
+}
+
+func (l *SystemDLogger) Notice(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriNotice)
+
+	return
+}
+
+func (l *SystemDLogger) Warning(s string, v ...interface{}) (err error) {
+
+	var msg string
+
+	if v != nil {
+		msg = fmt.Sprintf(s, v...)
+	} else {
+		msg = s
+	}
+
+	l.renderWrite(msg, journal.PriWarning)
+
+	return
+}
+
+func (l *SystemDLogger) renderWrite(msg string, prio journal.Priority) {
+
+	// TODO: implement code line, etc.
+	// https://www.freedesktop.org/software/systemd/man/systemd.journal-fields.html
+	// CODE_FILE=, CODE_LINE=, CODE_FUNC=
+	var err error
+
+	vars := map[string]string{
+		"DOCUMENTATION":     "https://git.r00t2.io/Go_GoUtils/",
+		"SYSLOG_IDENTIFIER": l.Prefix,
+		"SYSLOG_FACILITY":   "1", // USER
+	}
+
+	if err = journal.Send(msg, prio, vars); err != nil {
+		log.Panicln("could not send to Journald")
+	}
+
+	return
+}