chore: add computeRoutes/SplitRoutes latency metrics (#835)

* chore: add computeRoutes/SplitRoutes latency metrics

* per split metrics

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@uniswap/smart-order-router",
-  "version": "4.19.2",
+  "version": "4.19.3",
   "description": "Uniswap Smart Order Router",
   "main": "build/main/index.js",
   "typings": "build/main/index.d.ts",

src/routers/alpha-router/functions/best-swap-route.ts

@@ -90,6 +90,7 @@ export async function getBestSwapRoute(
   );
 
   // Given all the valid quotes for each percentage find the optimal route.
+  const getBestSwapRouteByStartTime = Date.now();
   const swapRoute = await getBestSwapRouteBy(
     routeType,
     percentToQuotes,
@@ -104,6 +105,19 @@ export async function getBestSwapRoute(
     swapConfig,
     providerConfig
   );
+  const getBestSwapRouteByLatencyMs = Date.now() - getBestSwapRouteByStartTime;
+
+  // Add latency metrics.
+  metric.putMetric(
+    'GetBestSwapRouteByLatency',
+    getBestSwapRouteByLatencyMs,
+    MetricLoggerUnit.Milliseconds
+  );
+  metric.putMetric(
+    `GetBestSwapRouteByLatency_Chain${chainId}`,
+    getBestSwapRouteByLatencyMs,
+    MetricLoggerUnit.Milliseconds
+  );
 
   // It is possible we were unable to find any valid route given the quotes.
   if (!swapRoute) {
@@ -287,6 +301,12 @@ export async function getBestSwapRouteBy(
       MetricLoggerUnit.Milliseconds
     );
 
+    metric.putMetric(
+      `Split${splits}Done_Chain${chainId}`,
+      Date.now() - startedSplit,
+      MetricLoggerUnit.Milliseconds
+    );
+
     startedSplit = Date.now();
 
     log.info(

src/routers/alpha-router/quoters/mixed-quoter.ts

@@ -193,6 +193,12 @@ export class MixedQuoter extends BaseQuoter<
       MetricLoggerUnit.Milliseconds
     );
 
+    metric.putMetric(
+      `MixedGetRoutesLoad_Chain${this.chainId}`,
+      Date.now() - beforeGetRoutes,
+      MetricLoggerUnit.Milliseconds
+    );
+
     return {
       routes: routes,
       candidatePools,

src/routers/alpha-router/quoters/v2-quoter.ts

@@ -126,6 +126,12 @@ export class V2Quoter extends BaseQuoter<V2CandidatePools, V2Route, Token> {
       MetricLoggerUnit.Milliseconds
     );
 
+    metric.putMetric(
+      `V2GetRoutesLoad_Chain${this.chainId}`,
+      Date.now() - beforeGetRoutes,
+      MetricLoggerUnit.Milliseconds
+    );
+
     return {
       routes,
       candidatePools,

src/routers/alpha-router/quoters/v3-quoter.ts

@@ -118,6 +118,12 @@ export class V3Quoter extends BaseQuoter<V3CandidatePools, V3Route, Token> {
       MetricLoggerUnit.Milliseconds
     );
 
+    metric.putMetric(
+      `V3GetRoutesLoad_Chain${this.chainId}`,
+      Date.now() - beforeGetRoutes,
+      MetricLoggerUnit.Milliseconds
+    );
+
     return {
       routes,
       candidatePools,

src/routers/alpha-router/quoters/v4-quoter.ts

@@ -117,6 +117,12 @@ export class V4Quoter extends BaseQuoter<V4CandidatePools, V4Route, Currency> {
       MetricLoggerUnit.Milliseconds
     );
 
+    metric.putMetric(
+      `V4GetRoutesLoad_Chain${this.chainId}`,
+      Date.now() - beforeGetRoutes,
+      MetricLoggerUnit.Milliseconds
+    );
+
     return {
       routes,
       candidatePools,