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Alternative RPC for fetching events (#678)
Alternative RPC for fetching events
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Original file line number | Diff line number | Diff line change |
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import { BlockTag } from '@ethersproject/abstract-provider' | ||
import { JsonRpcProvider } from '@ethersproject/providers' | ||
import { ChainId } from '@ubeswap/sdk' | ||
import { BaseContract, Event, EventFilter } from 'ethers' | ||
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import { EVENT_FETCH_RPC_URLS } from '../constants' | ||
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export default async function fetchEvents<T>( | ||
contract: BaseContract, | ||
filter: EventFilter, | ||
fromBlockOrBlockhash?: BlockTag | undefined, | ||
toBlock?: BlockTag | undefined | ||
): Promise<T[]> { | ||
const chainId = (await contract.provider.getNetwork()).chainId | ||
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const promises = [contract.queryFilter(filter, fromBlockOrBlockhash, toBlock)] | ||
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const alternativeRpc = EVENT_FETCH_RPC_URLS[chainId as ChainId] | ||
if (alternativeRpc) { | ||
const alternativeProvider = new JsonRpcProvider(alternativeRpc) | ||
promises.push(contract.connect(alternativeProvider).queryFilter(filter, fromBlockOrBlockhash, toBlock)) | ||
} | ||
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const result = await Promise.any<Event[]>(promises) | ||
return result as unknown as T[] | ||
} |
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Successfully deployed to the following URLs:
ubeswap-interface – ./
app-baklava.ubeswap.org
ubeswap-interface-ubeswap.vercel.app
ubeswap-interface.vercel.app
app-alfajores.ubeswap.org
ubeswap-interface-git-main-ubeswap.vercel.app