From 7449e8c3e33f6d997af229050a44bfd12e2b2ce6 Mon Sep 17 00:00:00 2001
From: nicholaspai <npai.nyc@gmail.com>
Date: Sat, 11 Jan 2025 14:18:50 -0700
Subject: [PATCH] Add native gas cost caching

Keep cache warm
---
 api/cron-cache-gas-prices.ts | 56 ++++++++++++++++++++++++++++++------
 1 file changed, 47 insertions(+), 9 deletions(-)

diff --git a/api/cron-cache-gas-prices.ts b/api/cron-cache-gas-prices.ts
index 4c472961c..6e5f5cb92 100644
--- a/api/cron-cache-gas-prices.ts
+++ b/api/cron-cache-gas-prices.ts
@@ -31,12 +31,18 @@ const updateIntervalsSecPerChain = {
   default: 5,
 };
 
-// Set lower than TTL in getCachedOpStackL1DataFee and getCachedNativeGasCost.
+// Set lower than TTL in getCachedOpStackL1DataFee
 // Set lower than the L1 block time so we can try to get as up to date L1 data fees based on L1 base fees as possible.
 const updateL1DataFeeIntervalsSecPerChain = {
   default: 10,
 };
 
+// Set lower than TTL in getCachedNativeGasCost. This should rarely change so we should just make sure
+// we keep this cache warm.
+const updateNativeGasCostIntervalsSecPerChain = {
+  default: 30,
+};
+
 const maxDurationSec = 60;
 
 const getDepositArgsForChainId = (chainId: number, tokenAddress: string) => {
@@ -114,10 +120,9 @@ const handler = async (
     };
 
     /**
-     * @notice Updates the L1 data fee and L2 gas cost caches every `updateL1DataFeeIntervalsSecPerChain` seconds
+     * @notice Updates the L1 data fee gas cost cache every `updateL1DataFeeIntervalsSecPerChain` seconds
      * up to `maxDurationSec` seconds.
-     * @dev This function will also update the L2 gas costs because this value is required to get the L1 data fee.
-     * @param chainId Chain to estimate gas price for
+     * @param chainId Chain to estimate l1 data fee for
      * @param outputTokenAddress This output token will be used to construct a fill transaction to simulate
      * gas costs for.
      */
@@ -144,6 +149,32 @@ const handler = async (
       }
     };
 
+    /**
+     * @notice Updates the native gas cost cache every `updateNativeGasCostIntervalsSecPerChain` seconds
+     * up to `maxDurationSec` seconds.
+     * @param chainId Chain to estimate gas cost for
+     * @param outputTokenAddress This output token will be used to construct a fill transaction to simulate
+     * gas costs for.
+     */
+    const updateNativeGasCostPromise = async (
+      chainId: number,
+      outputTokenAddress: string
+    ): Promise<void> => {
+      const secondsPerUpdate = updateNativeGasCostIntervalsSecPerChain.default;
+      const depositArgs = getDepositArgsForChainId(chainId, outputTokenAddress);
+      const cache = getCachedNativeGasCost(depositArgs);
+
+      while (true) {
+        const diff = Date.now() - functionStart;
+        // Stop after `maxDurationSec` seconds
+        if (diff >= maxDurationSec * 1000) {
+          break;
+        }
+        await cache.set();
+        await utils.delay(secondsPerUpdate);
+      }
+    };
+
     const lineaDestinationRoutes = availableRoutes.filter(
       ({ destinationChainId }) => destinationChainId === CHAIN_IDs.LINEA
     );
@@ -172,11 +203,18 @@ const handler = async (
           const outputTokensForChain = routesToChain.map(
             ({ destinationToken }) => destinationToken
           );
-          await Promise.all(
-            outputTokensForChain.map((outputToken) =>
-              updateL1DataFeePromise(chain.chainId, outputToken)
-            )
-          );
+          await Promise.all([
+            Promise.all(
+              outputTokensForChain.map((outputToken) =>
+                updateNativeGasCostPromise(chain.chainId, outputToken)
+              )
+            ),
+            Promise.all(
+              outputTokensForChain.map((outputToken) =>
+                updateL1DataFeePromise(chain.chainId, outputToken)
+              )
+            ),
+          ]);
         })
       ),
     ]);