fix: Backtesting #1: Event fetcher (Infura → JSON Lines cache) (#315)

Browse source

Add onchain/script/backtesting/fetch-events.ts — a tsx script that:
- Fetches Swap/Mint/Burn events from a Uniswap V3 pool via Infura (Base mainnet)
- Batches eth_getLogs in 2 000-block chunks with 100 ms inter-batch delay
- Decodes each log with viem and writes one JSON Line per event
- Supports resume: reads last block from existing cache file on re-run
- Retries with exponential back-off on 429 / rate-limit errors
- Prints per-batch progress: "Fetching blocks X-Y... N events (B/T batches)"

Also adds package.json, tsconfig.json, and cache/.gitkeep.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

...

This commit is contained in:

openhands 2026-02-26 22:04:43 +00:00

parent 52411e881a

commit df89b8c2da

4 changed files with 330 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

0

onchain/script/backtesting/cache/.gitkeep vendored Normal file

Unescape Escape View file