Decoding logs

from eth_abi import decode
from eth_utils import event_abi_to_log_topic, to_checksum_address
from bloklake import Bloklake

bl = Bloklake(chain="eth")
SWAP_V2 = {"type": "event", "name": "Swap", "inputs": [
    {"name": "sender", "type": "address", "indexed": True},
    {"name": "amount0In", "type": "uint256", "indexed": False},
    {"name": "amount1In", "type": "uint256", "indexed": False},
    {"name": "amount0Out", "type": "uint256", "indexed": False},
    {"name": "amount1Out", "type": "uint256", "indexed": False},
    {"name": "to", "type": "address", "indexed": True},
]}
topic0 = "0x" + event_abi_to_log_topic(SWAP_V2).hex()

page = bl.query({
    "from_block": 19426000, "to_block": 19426099,
    "logs": [{"topic0": [topic0]}],
    "fields": {"log": ["block_number", "address", "topic1", "topic2", "data"]},
})
for log in page.logs[:2]:
    a0in, a1in, a0out, a1out = decode(["uint256"] * 4, bytes.fromhex(log["data"][2:]))
    sender = to_checksum_address("0x" + log["topic1"][-40:])
    print(log["block_number"], to_checksum_address(log["address"]), "sender", sender, "in", a0in, a1in, "out", a0out, a1out)

19426000 0x55D5c232D921B9eAA6b37b5845E439aCD04b4DBa sender 0x6b75d8AF000000e20B7a7DDf000Ba900b4009A80 in 0 568824768602570752 out 105201708239710 0

import { decodeEventLog, parseAbiItem, toEventSelector, type Hex } from "viem";
import { Bloklake } from "@bloklake/client";

const bl = new Bloklake({ chain: "rh" });
const transfer = parseAbiItem("event Transfer(address indexed from, address indexed to, uint256 value)");

const page = await bl.query({
  fromBlock: 61000000,
  toBlock: 61000009,
  logs: [{ topic0: [toEventSelector(transfer)] }],
  fields: { log: ["blockNumber", "address", "topic0", "topic1", "topic2", "data"] },
});
for (const log of page.logs.slice(0, 2)) {
  // rows are hex strings already: no conversion before decoding
  const { args } = decodeEventLog({
    abi: [transfer],
    topics: [log.topic0, log.topic1, log.topic2] as [Hex, Hex, Hex],
    data: log.data as Hex,
  });
  console.log(log.blockNumber, log.address, args.from, args.to, args.value);
}

61000000 0xecef091068f26d19174b3ad49e5e809d977e4e63 0x7eD598BcEf8bd9Edd8C97A195C6d13f40801EC7e 0x267444D099b10fB5Ed7c3Cc7B7c767AdcA574952 81632653061224488171595169n