@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
27 lines • 1.94 kB
JavaScript
import { log } from '../../util';
/**
* Provider for getting V3 subgraph pools that falls back to a different provider
* in the event of failure.
*
* @export
* @class V3SubgraphProviderWithFallBacks
*/
export class V3SubgraphProviderWithFallBacks {
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 V3 from fallback #${i}`);
}
}
throw new Error('Failed to get subgraph pools from any providers');
}
}
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