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Dex adapter

Adapter example

import customBackfill from "../../helper/customBackfill";
import { DEFAULT_TOTAL_VOLUME_FACTORY, DEFAULT_TOTAL_VOLUME_FIELD, getChainVolume } from "../../helper/getUniSubgraphVolume";
import { CHAIN } from "../../helper/chains";
import type { ChainEndpoints, SimpleVolumeAdapter } from "../../dexVolume.type";
import type { Chain } from "@defillama/sdk/build/general";
// Subgraphs endpoints
const endpoints: ChainEndpoints = {
[CHAIN.ETHEREUM]: "https://api.thegraph.com/subgraphs/name/dex",
[CHAIN.POLYGON]: "https://api.thegraph.com/subgraphs/name/dex-polygon",
[CHAIN.ARBITRUM]: "https://api.thegraph.com/subgraphs/name/dex-arbitrum",
};
// Fetch function to query the subgraphs
const graphs = getChainVolume({
graphUrls: endpoints,
totalVolume: {
factory: DEFAULT_TOTAL_VOLUME_FACTORY,
field: DEFAULT_TOTAL_VOLUME_FIELD,
},
dailyVolume: {
factory: DAILY_VOLUME_FACTORY,
field: "D_VOL_FIELD",
},
hasDailyVolume: false,
});
const adapter: SimpleVolumeAdapter = {
volume: Object.keys(endpoints).reduce((acc, chain) => {
return {
...acc,
[chain]: {
fetch: graphs(chain as Chain),
start: async () => 1570665600,
customBackfill: customBackfill(CHAIN.ETHEREUM, graphs),
}
}
}, {} as SimpleVolumeAdapter['volume'])
};
export default adapter;