@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
35 lines • 2.31 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.V2SubgraphProviderWithFallBacks = void 0;
const util_1 = require("../../util");
/**
* Provider for getting V2 subgraph pools that falls back to a different provider
* in the event of failure.
*
* @export
* @class V2SubgraphProviderWithFallBacks
*/
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) {
util_1.log.info(`Failed to get subgraph pools for V2 from fallback #${i}`);
}
}
throw new Error('Failed to get subgraph pools from any providers');
}
}
exports.V2SubgraphProviderWithFallBacks = V2SubgraphProviderWithFallBacks;
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