feat: export attribution info via Prometheus endpoint#170
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Adds four new Prometheus counters that expose usage broken down by both
api_key and attribution suffix (the part after ':' in the key string):
- plexus_api_key_attribution_requests_total
- plexus_api_key_attribution_tokens_total
- plexus_api_key_attribution_cost_usd_total
- plexus_api_key_attribution_errors_total
This allows Grafana queries like
plexus_api_key_attribution_requests_total{api_key="amolith"}
to render a per-suffix breakdown graph for a single key.
Closes #168
Co-authored-by: Matt Cowger <mcowger@users.noreply.github.com>
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feat: export attribution info via Prometheus endpoint
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Adds four new Prometheus counters exposing usage broken down by both
api_keyandattributionsuffix (the part after:in the key string):plexus_api_key_attribution_requests_totalplexus_api_key_attribution_tokens_totalplexus_api_key_attribution_cost_usd_totalplexus_api_key_attribution_errors_totalCloses #168
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