This is a WASM implementation of a metrics Recorder.
Metrics can be transferred in two ways:
- If the WASM app itself wants access to metrics, it can register an event receiver that will be called whenever a metric is recorded.
- Metrics can be send to a remote server. In this case, asn1 is used to encode the metrics into a space efficient binary format. The encoded metrics are then batched and send with POST requests to the specified server URL.
Unlike normal metrics, the metrics that metrics-wasm-exporter exports also carry a timestamp of when the metric was originally recorded.