[Bug Report] Entities counter is inaccurate

[ghost]

Read before opening a bug report!

First, please ensure that you have done the following things on your own.

• [V ] I have successfully configured Prometheus
• [V] I have successfully configured Grafana
• [V] I have added a valid scrape config for my Minecraft server in Prometheus
• [kinda] I know how to build Grafana dashboards and Prometheus queries

I've found a bug that if all entities disappear from a world, it does not update their counter on grafana, they keep being for example "14" instead of going to 0 (pretty much it never reaches 0) I'm not sure if it's a configuration issue on my side or a bug in the plugin

[sladkoff]

How do you measure that "all entities disappear from a world"? We're currently just exporting whatever entity count the server implementation gives us, so there's probably not much we can change.

[schoentoon]

Would it not simply be a matter of clearing out ENTITIES in https://github.com/sladkoff/minecraft-prometheus-exporter/blob/master/src/main/java/de/sldk/mc/metrics/Entities.java before iterating over all the worlds in https://github.com/sladkoff/minecraft-prometheus-exporter/blob/master/src/main/java/de/sldk/mc/metrics/WorldMetric.java#L17 using the clear() method in prometheus?