@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
31 lines • 2.12 kB
JavaScript
import { log } from '../../util';
/**
* Provider for getting V2 subgraph pools that falls back to a different provider
* in the event of failure.
*
* @export
* @class V2SubgraphProviderWithFallBacks
*/
export class V2SubgraphProviderWithFallBacks {
/**
* Creates an instance of V2SubgraphProviderWithFallBacks.
* @param fallbacks Ordered list of `IV2SubgraphProvider` to try to get pools from.
*/
constructor(fallbacks) {
this.fallbacks = fallbacks;
}
async getPools(tokenIn, tokenOut, providerConfig) {
for (let i = 0; i < this.fallbacks.length; i++) {
const provider = this.fallbacks[i];
try {
const pools = await provider.getPools(tokenIn, tokenOut, providerConfig);
return pools;
}
catch (err) {
log.info(`Failed to get subgraph pools for V2 from fallback #${i}`);
}
}
throw new Error('Failed to get subgraph pools from any providers');
}
}
//# sourceMappingURL=data:application/json;base64,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