mirror of
https://github.com/luxfi/graph.git
synced 2026-09-24 00:26:07 +00:00
zeekayandHanzo Dev
1dec0e83f2
Every price chart on the site read "Missing chart data". Not because the
trades were missing — they were on disk, and the swaps query serves them —
but because tokenDayDatas, poolDayDatas and uniswapDayDatas each answered
[] from a hardcoded stub, and a client draws nothing under three points.
Underneath that was a clock problem. eth_getLogs says which block a log was
in and never when, so a swap's `timestamp` held the block NUMBER — trade
history dated every fill to January 1970, and a day series was not merely
empty but impossible. The poll now reads the header of each block it saw an
event in, and declines to advance past one it could not read: a block is
indexed when it has been read whole. Rows an older build wrote are dated
from the same headers, which is what lets the series cover the history
already indexed rather than starting the day it ships.
The series itself is a second fold over the trade stream the valuation pass
already builds — one read, one valuation, two questions. A pool's candle is
its own execution ratio, exact for every day. A token's is that ratio carried
to USD through the other leg, so it is exact against a stablecoin and exact
in shape against a volatile one. Value locked is not in the trades at all, so
each day records it while it is today.
Recomputing the whole history every thirty seconds must not rewrite it, so a
day is written only when it moves: in the steady state that is one day per
subject that traded.
Filtering learned two things a chart needs. `where: {token: "0x…"}` names a
reference, and the row carries the token itself so the client can select
through it — so a filter now compares against the referenced id. And an
address arrives checksummed as often as lower-cased, so exact matches on text
ignore case.
pairDayDatas and the hour series stay stubs. Nothing asks for them.
Tests: 18 deliberate mutations — an off-by-one day boundary, high taking the
smallest price, the where filter dropped, the limit applied before the sort,
trades ordered by id, a log index read as decimal, a candle priced off its own
leg, and the call sites that write the series and read the block times removed
outright — each one turns a test red.
Co-authored-by: Hanzo Dev <[email protected]>