Define map metrics as custom collectors #1510
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These types are slim helpers intended to be used in custom collectors that read metrics directly from BPF maps. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
This commit reimplements two metrics: tetragon_map_in_use_gauge and tetragon_map_errors_total, so that they are exposed by custom Prometheus collectors. This means that metric values are read from BPF maps at the scrape time, without a need for a userland tickers. From the user perspective, the metrics are more accurate. Additionally, the errors metric is exposed as a counter instead of a gauge. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
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This PR reimplements two metrics:
tetragon_map_in_use_gaugeandtetragon_map_errors_total, so that they are exposed by custom Prometheuscollectors. This means that metric values are read from BPF maps at the scrape
time, without a need for a userland tickers. From the user perspective, the
metrics are more accurate.
Additionally, the errors metric is exposed as a counter instead of a gauge.