perp-fees: delete gauges on asset_not_found (Lighter ghost metrics) - #1621
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This was referenced Jul 28, 2026
Flotapponnier
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* perp-fees: delete gauges on asset_not_found (Lighter ghost metrics) (#1621) * perp-fees: delete gauges on asset_not_found to prevent ghost metrics * add mayan/squid/socket/across to provider registry and logo manifest * perp-fees: fix GMX subsquid schema + edgeX depth level (#1622) GMX: Subsquid removed positionFeeFactor field; query was 400ing on every tick. Remove the dropped field and its Go fallback. edgeX: depth endpoint only accepts level=15 or 200, not 100. The invalid level returned empty_orderbook on every tick.
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Problem
Lighter removed BTC, ETH, and SOL from their perp markets. Their live
/orderBookDetailsAPI returns 89 markets, none of which are BTC/ETH/SOL. The harness returnsasset_not_foundon every 5-minute tick butrecordSample()returned early without clearing the gauge — so the Go Prom client kept the last.Set()value in memory as a ghost metric. Lighter showed as #1 all-in cost indefinitely.Fix
not_founderror class toclassifyErr()(matchesasset_not_foundandunsupported_venue)not_found, delete all gauge series before returning:allInBps,spread,takerFee,funding,fetchLatency,lastRefresh, and all four tier gaugesDeploy after merge
Rebuild
perp-feeson VPS so the fix takes effect on the next tick.