mqtt2prometheus est un “exporter” pour Prometheus. Il souscrit à un Broker MQTT, s'abonne aux topics et les rends disponibles pour le scapring de Prometheus.

S'appuie sur Uber Zap pour la génération des logs. Les niveaux de logs disponibles sont ceux proposés par bibliothèque.

const (
	// DebugLevel logs are typically voluminous, and are usually disabled in
	// production.
	DebugLevel = zapcore.DebugLevel
	// InfoLevel is the default logging priority.
	InfoLevel = zapcore.InfoLevel
	// WarnLevel logs are more important than Info, but don't need individual
	// human review.
	WarnLevel = zapcore.WarnLevel
	// ErrorLevel logs are high-priority. If an application is running smoothly,
	// it shouldn't generate any error-level logs.
	ErrorLevel = zapcore.ErrorLevel
	// DPanicLevel logs are particularly important errors. In development the
	// logger panics after writing the message.
	DPanicLevel = zapcore.DPanicLevel
	// PanicLevel logs a message, then panics.
	PanicLevel = zapcore.PanicLevel
	// FatalLevel logs a message, then calls os.Exit(1).
	FatalLevel = zapcore.FatalLevel
)

• https://github.com/hikhvar/mqtt2prometheus
• https://medium.com/codex/level-based-logging-in-go-with-uber-zap-a8a90aa40672