mirror of
https://github.com/ClusterCockpit/cc-backend
synced 2024-09-20 11:27:26 +02:00
112 lines
2.3 KiB
Go
112 lines
2.3 KiB
Go
// Provides a simple way of logging with different levels.
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// Time/Data are not logged on purpose because systemd adds
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// them for us.
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//
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// Uses these prefixes: https://www.freedesktop.org/software/systemd/man/sd-daemon.html
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package log
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import (
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"fmt"
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"io"
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"os"
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)
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var DebugWriter io.Writer = os.Stderr
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var InfoWriter io.Writer = os.Stderr
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var WarnWriter io.Writer = os.Stderr
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var ErrorWriter io.Writer = os.Stderr
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func init() {
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if lvl, ok := os.LookupEnv("LOGLEVEL"); ok {
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switch lvl {
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case "err", "fatal":
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WarnWriter = io.Discard
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fallthrough
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case "warn":
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InfoWriter = io.Discard
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fallthrough
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case "info":
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DebugWriter = io.Discard
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case "debug":
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// Nothing to do...
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default:
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Warnf("environment variable LOGLEVEL has invalid value %#v", lvl)
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}
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}
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}
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func Debug(v ...interface{}) {
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if DebugWriter != io.Discard {
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v = append([]interface{}{"<7>[DEBUG]"}, v...)
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fmt.Fprintln(DebugWriter, v...)
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}
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}
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func Info(v ...interface{}) {
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if InfoWriter != io.Discard {
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v = append([]interface{}{"<6>[INFO]"}, v...)
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fmt.Fprintln(InfoWriter, v...)
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}
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}
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func Print(v ...interface{}) {
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Info(v...)
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}
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func Warn(v ...interface{}) {
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if WarnWriter != io.Discard {
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v = append([]interface{}{"<4>[WARNING]"}, v...)
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fmt.Fprintln(WarnWriter, v...)
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}
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}
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func Error(v ...interface{}) {
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if ErrorWriter != io.Discard {
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v = append([]interface{}{"<3>[ERROR]"}, v...)
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fmt.Fprintln(ErrorWriter, v...)
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}
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}
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func Fatal(v ...interface{}) {
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if ErrorWriter != io.Discard {
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v = append([]interface{}{"<0>[FATAL]"}, v...)
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fmt.Fprintln(ErrorWriter, v...)
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}
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os.Exit(1)
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}
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func Debugf(format string, v ...interface{}) {
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if DebugWriter != io.Discard {
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fmt.Fprintf(DebugWriter, "<7>[DEBUG] "+format+"\n", v...)
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}
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}
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func Infof(format string, v ...interface{}) {
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if InfoWriter != io.Discard {
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fmt.Fprintf(InfoWriter, "<6>[INFO] "+format+"\n", v...)
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}
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}
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func Printf(format string, v ...interface{}) {
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Infof(format, v...)
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}
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func Warnf(format string, v ...interface{}) {
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if WarnWriter != io.Discard {
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fmt.Fprintf(WarnWriter, "<4>[WARNING] "+format+"\n", v...)
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}
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}
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func Errorf(format string, v ...interface{}) {
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if ErrorWriter != io.Discard {
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fmt.Fprintf(ErrorWriter, "<3>[ERROR] "+format+"\n", v...)
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}
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}
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func Fatalf(format string, v ...interface{}) {
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if ErrorWriter != io.Discard {
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fmt.Fprintf(ErrorWriter, "<0>[FATAL] "+format+"\n", v...)
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}
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os.Exit(1)
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}
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