48 lines
1.4 KiB
TypeScript
48 lines
1.4 KiB
TypeScript
import { HandleEvmLogsConfig } from "./HandleEvmLogs";
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import { EvmTransaction, TransactionFound } from "../../entities";
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/**
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* Handling means mapping and forward to a given target.
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* As of today, we have mapped this event evmFailedRedeemed, evmStandardRelayDelivered and evmTransferRedeemed.
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*/
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export class HandleEvmTransactions<T> {
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cfg: HandleEvmLogsConfig;
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mapper: (log: EvmTransaction) => T;
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target: (parsed: T[]) => Promise<void>;
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constructor(
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cfg: HandleEvmLogsConfig,
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mapper: (log: EvmTransaction) => T,
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target: (parsed: T[]) => Promise<void>
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) {
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this.cfg = this.normalizeCfg(cfg);
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this.mapper = mapper;
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this.target = target;
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}
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public async handle(transactions: EvmTransaction[]): Promise<T[]> {
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const mappedItems = transactions.map((transaction) => {
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return this.mapper(transaction);
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}) as TransactionFound[];
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const filterItems = mappedItems.filter(
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(transaction) => transaction.methodsByAddress || transaction.name
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) as T[];
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await this.target(filterItems);
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// TODO: return a result specifying failures if any
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return filterItems;
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}
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private normalizeCfg(cfg: HandleEvmLogsConfig): HandleEvmLogsConfig {
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return {
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filter: {
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addresses: cfg.filter.addresses.map((addr) => addr.toLowerCase()),
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topics: cfg.filter.topics.map((topic) => topic.toLowerCase()),
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},
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abi: cfg.abi,
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};
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}
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}
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