Merge pull request #182 from bcnmy/feat/gas-limit-sims-buffers

added gas limit sims buffer config

Author: vr16x

src/modules/chains/schemas.ts

@@ -81,6 +81,12 @@ const chainConfigSchemaBase = z.object({
       perAuthBaseCost: bigIntLikeSchema.optional(),
     })
     .default({}),
+  simulationGasLimitBuffers: z
+    .object({
+      callGasLimit: bigIntLikeSchema.optional(),
+      verificationGasLimit: bigIntLikeSchema.optional(),
+    })
+    .default({}),
   simulationOverrides: z
     .object({
       gas: bigIntLikeSchema.optional(),

src/modules/simulator/simulation.service.ts

@@ -1,3 +1,4 @@
+import { ChainsService } from "@/chains";
 import { BadRequestException, packUint128Pair, withTrace } from "@/common";
 import { TokenWithPermitAbi } from "@/contracts/resources/erc20-with-permit";
 import { type ConfigType, InjectConfig } from "@/core/config";
@@ -79,6 +80,7 @@ export class SimulationService {
     private readonly nodeService: NodeService,
     private readonly tokenSlotDetectionService: TokenSlotDetectionService,
     private readonly rpcManagerService: RpcManagerService,
+    private readonly chainsService: ChainsService,
     @InjectConfig(gasEstimatorConfig)
     private readonly gasEstimatorConfiguration: ConfigType<
       typeof gasEstimatorConfig
@@ -772,6 +774,17 @@ export class SimulationService {
           );
         }
 
+        const { simulationGasLimitBuffers } =
+          this.chainsService.getChainSettings(chainId);
+
+        // Chain specific verification and call gas limit buffers to handle any special cases.
+        if (simulationGasLimitBuffers.callGasLimit)
+          callGasLimit += simulationGasLimitBuffers.callGasLimit;
+
+        if (simulationGasLimitBuffers.verificationGasLimit)
+          verificationGasLimit +=
+            simulationGasLimitBuffers.verificationGasLimit;
+
         return {
           userOpIndex,
           chainId,