//getCacheReadings grabs the readings and returns a map[string]string
func getCacheReadings(c *sensorCache.Cache) map[string]string {
m := make(map[string]string)
for k, v := range c.Values() {
if _, OK := v.(string); OK {
m[k] = v.(string)
}
}
return m
}
//cacheReadings catch readings from subscribed channels and cache
func cacheReadings(c *sensorCache.Cache, s *mqttservices.MqttClient) {
defer wg.Done()
chIn := subscribeSensors(&config, s)
for m := range chIn {
c.Insert(addressParameter[m.TopicName], fmt.Sprintf("%s", m.Payload))
}
log.Println("wuMQTTAgregate: MQTT broker connection closed")
c.StopMonitoring()
close(done)
}