Added debug logs for v2 quotes

src/providers/v2/quote-provider.ts

@@ -6,6 +6,8 @@ import {
 import { BigNumber } from 'ethers';
 import { V2Route } from '../../routers/router';
 import { CurrencyAmount } from '../../util/amounts';
+import { log } from '../../util/log';
+import { routeToString } from '../../util/routes';
 
 // Quotes can be null (e.g. pool did not have enough liquidity).
 export type V2AmountQuote = {
@@ -58,9 +60,12 @@ export class V2QuoteProvider implements IV2QuoteProvider {
  ): Promise<{ routesWithQuotes: V2RouteWithQuotes[] }> {
  const routesWithQuotes: V2RouteWithQuotes[] = [];
 
+ let debugStrs: string[] = [];
  for (const route of routes) {
  const amountQuotes: V2AmountQuote[] = [];
 
+ let insufficientInputAmountErrorCount = 0;
+ let insufficientReservesErrorCount = 0;
  for (const amount of amounts) {
  try {
  if (tradeType == TradeType.EXACT_INPUT) {
@@ -90,19 +95,36 @@ export class V2QuoteProvider implements IV2QuoteProvider {
  }
  } catch (err) {
  // Can fail to get quotes, e.g. throws InsufficientReservesError or InsufficientInputAmountError.
- if (
- err instanceof InsufficientInputAmountError ||
- err instanceof InsufficientReservesError
- ) {
+ if (err instanceof InsufficientInputAmountError) {
+ insufficientInputAmountErrorCount =
+ insufficientInputAmountErrorCount + 1;
+ amountQuotes.push({ amount, quote: null });
+ } else if (err instanceof InsufficientReservesError) {
+ insufficientReservesErrorCount = insufficientReservesErrorCount + 1;
  amountQuotes.push({ amount, quote: null });
  } else {
  throw err;
  }
  }
  }
 
+ if (
+ insufficientInputAmountErrorCount > 0 ||
+ insufficientReservesErrorCount > 0
+ ) {
+ debugStrs.push(
+ `${[
+ routeToString(route),
+ ]} Input: ${insufficientInputAmountErrorCount} Reserves: ${insufficientReservesErrorCount} }`
+ );
+ }
+
  routesWithQuotes.push([route, amountQuotes]);
  }
+
+ if (debugStrs.length > 0) {
+ log.info({ debugStrs }, `Failed quotes for V2 routes`);
+ }
 
  return {
  routesWithQuotes,

src/providers/v3/quote-provider.ts

@@ -871,7 +871,7 @@ export class V3QuoteProvider implements IV3QuoteProvider {
  (amounts, routeStr) => `${routeStr} : ${amounts}`
  ),
  },
- `Failed quotes for routes Part ${idx}/${Math.ceil(
+ `Failed quotes for V3 routes Part ${idx}/${Math.ceil(
  debugFailedQuotes.length / debugChunk
  )}`
  );