@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
106 lines • 10.4 kB
JavaScript
import _ from 'lodash';
import { ChainId, log, WRAPPED_NATIVE_CURRENCY } from '../util';
import { DAI_XDC_APOTHEM, USDC_XDC_APOTHEM, USDT_XDC, USDT_XDC_APOTHEM, } from './token-provider';
// These tokens will added to the Token cache on initialization.
export const CACHE_SEED_TOKENS = {
[ChainId.XDC_APOTHEM]: {
USDC: USDC_XDC_APOTHEM,
USDT: USDT_XDC_APOTHEM,
DAI: DAI_XDC_APOTHEM,
WXDC: WRAPPED_NATIVE_CURRENCY[ChainId.XDC_APOTHEM],
},
[ChainId.XDC]: {
USDT: USDT_XDC,
WXDC: WRAPPED_NATIVE_CURRENCY[ChainId.XDC],
},
// Currently we do not have providers for Moonbeam mainnet or Gnosis testnet
};
/**
* Provider for getting token metadata that falls back to a different provider
* in the event of failure.
*
* @export
* @class CachingTokenProviderWithFallback
*/
export class CachingTokenProviderWithFallback {
constructor(chainId,
// Token metadata (e.g. symbol and decimals) don't change so can be cached indefinitely.
// Constructing a new token object is slow as sdk-core does checksumming.
tokenCache, primaryTokenProvider, fallbackTokenProvider) {
this.chainId = chainId;
this.tokenCache = tokenCache;
this.primaryTokenProvider = primaryTokenProvider;
this.fallbackTokenProvider = fallbackTokenProvider;
this.CACHE_KEY = (chainId, address) => `token-${chainId}-${address}`;
}
async getTokens(_addresses) {
const seedTokens = CACHE_SEED_TOKENS[this.chainId];
if (seedTokens) {
for (const token of Object.values(seedTokens)) {
await this.tokenCache.set(this.CACHE_KEY(this.chainId, token.address.toLowerCase()), token);
}
}
const addressToToken = {};
const symbolToToken = {};
const addresses = _(_addresses)
.map((address) => address.toLowerCase())
.uniq()
.value();
const addressesToFindInPrimary = [];
const addressesToFindInSecondary = [];
for (const address of addresses) {
if (await this.tokenCache.has(this.CACHE_KEY(this.chainId, address))) {
addressToToken[address.toLowerCase()] = (await this.tokenCache.get(this.CACHE_KEY(this.chainId, address)));
symbolToToken[addressToToken[address].symbol] =
(await this.tokenCache.get(this.CACHE_KEY(this.chainId, address)));
}
else {
addressesToFindInPrimary.push(address);
}
}
log.info({ addressesToFindInPrimary }, `Found ${addresses.length - addressesToFindInPrimary.length} out of ${addresses.length} tokens in local cache. ${addressesToFindInPrimary.length > 0
? `Checking primary token provider for ${addressesToFindInPrimary.length} tokens`
: ``}
`);
if (addressesToFindInPrimary.length > 0) {
const primaryTokenAccessor = await this.primaryTokenProvider.getTokens(addressesToFindInPrimary);
for (const address of addressesToFindInPrimary) {
const token = primaryTokenAccessor.getTokenByAddress(address);
if (token) {
addressToToken[address.toLowerCase()] = token;
symbolToToken[addressToToken[address].symbol] = token;
await this.tokenCache.set(this.CACHE_KEY(this.chainId, address.toLowerCase()), addressToToken[address]);
}
else {
addressesToFindInSecondary.push(address);
}
}
log.info({ addressesToFindInSecondary }, `Found ${addressesToFindInPrimary.length - addressesToFindInSecondary.length} tokens in primary. ${this.fallbackTokenProvider
? `Checking secondary token provider for ${addressesToFindInSecondary.length} tokens`
: `No fallback token provider specified. About to return.`}`);
}
if (this.fallbackTokenProvider && addressesToFindInSecondary.length > 0) {
const secondaryTokenAccessor = await this.fallbackTokenProvider.getTokens(addressesToFindInSecondary);
for (const address of addressesToFindInSecondary) {
const token = secondaryTokenAccessor.getTokenByAddress(address);
if (token) {
addressToToken[address.toLowerCase()] = token;
symbolToToken[addressToToken[address].symbol] = token;
await this.tokenCache.set(this.CACHE_KEY(this.chainId, address.toLowerCase()), addressToToken[address]);
}
}
}
return {
getTokenByAddress: (address) => {
return addressToToken[address.toLowerCase()];
},
getTokenBySymbol: (symbol) => {
return symbolToToken[symbol.toLowerCase()];
},
getAllTokens: () => {
return Object.values(addressToToken);
},
};
}
}
//# sourceMappingURL=data:application/json;base64,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