fix(sdk): have getMessageStatus call messenger

.changeset/purple-melons-explain.md

@@ -0,0 +1,5 @@
+---
+'@eth-optimism/sdk': patch
+---
+
+Simplifies getMessageStatus to use an O(1) lookup instead of an event query

packages/sdk/src/cross-chain-messenger.ts

@@ -667,25 +667,54 @@ export class CrossChainMessenger {
     toBlockOrBlockHash?: BlockTag
   ): Promise<MessageStatus> {
     const resolved = await this.toCrossChainMessage(message, messageIndex)
-    const receipt = await this.getMessageReceipt(
-      resolved,
-      messageIndex,
-      fromBlockOrBlockHash,
-      toBlockOrBlockHash
+    // legacy withdrawals relayed prebedrock are v1
+    const messageHashV0 = hashCrossDomainMessagev0(
+      resolved.target,
+      resolved.sender,
+      resolved.message,
+      resolved.messageNonce
     )
+    // bedrock withdrawals are v1
+    // legacy withdrawals relayed postbedrock are v1
+    // there is no good way to differentiate between the two types of legacy
+    // so what we will check for both
+    const messageHashV1 = hashCrossDomainMessagev1(
+      resolved.messageNonce,
+      resolved.sender,
+      resolved.target,
+      resolved.value,
+      resolved.minGasLimit,
+      resolved.message
+    )
+
+    // Here we want the messenger that will receive the message, not the one that sent it.
+    const messenger =
+      resolved.direction === MessageDirection.L1_TO_L2
+        ? this.contracts.l2.L2CrossDomainMessenger
+        : this.contracts.l1.L1CrossDomainMessenger
+
+    const success =
+      (await messenger.successfulMessages(messageHashV0)) ||
+      (await messenger.successfulMessages(messageHashV1))
+
+    const failure =
+      (await messenger.failedMessages(messageHashV0)) ||
+      (await messenger.failedMessages(messageHashV1))
 
     if (resolved.direction === MessageDirection.L1_TO_L2) {
-      if (receipt === null) {
-        return MessageStatus.UNCONFIRMED_L1_TO_L2_MESSAGE
+      if (success) {
+        return MessageStatus.RELAYED
+      } else if (failure) {
+        return MessageStatus.FAILED_L1_TO_L2_MESSAGE
       } else {
-        if (receipt.receiptStatus === MessageReceiptStatus.RELAYED_SUCCEEDED) {
-          return MessageStatus.RELAYED
-        } else {
-          return MessageStatus.FAILED_L1_TO_L2_MESSAGE
-        }
+        return MessageStatus.UNCONFIRMED_L1_TO_L2_MESSAGE
       }
     } else {
-      if (receipt === null) {
+      if (success) {
+        return MessageStatus.RELAYED
+      } else if (failure) {
+        return MessageStatus.READY_FOR_RELAY
+      } else {
         let timestamp: number
         if (this.bedrock) {
           const output = await this.getMessageBedrockOutput(
@@ -737,12 +766,6 @@ export class CrossChainMessenger {
         } else {
           return MessageStatus.READY_FOR_RELAY
         }
-      } else {
-        if (receipt.receiptStatus === MessageReceiptStatus.RELAYED_SUCCEEDED) {
-          return MessageStatus.RELAYED
-        } else {
-          return MessageStatus.READY_FOR_RELAY
-        }
       }
     }
   }

packages/sdk/test/contracts/MockMessenger.sol

@@ -8,6 +8,8 @@ contract MockMessenger is ICrossDomainMessenger {
     }
 
     uint256 public nonce;
+    mapping (bytes32 => bool) public successfulMessages;
+    mapping (bytes32 => bool) public failedMessages;
 
     // Empty function to satisfy the interface.
     function sendMessage(
@@ -81,6 +83,7 @@ contract MockMessenger is ICrossDomainMessenger {
     ) public {
         for (uint256 i = 0; i < _params.length; i++) {
             emit RelayedMessage(_params[i]);
+            successfulMessages[_params[i]] = true;
         }
     }
 
@@ -89,6 +92,7 @@ contract MockMessenger is ICrossDomainMessenger {
     ) public {
         for (uint256 i = 0; i < _params.length; i++) {
             emit FailedRelayedMessage(_params[i]);
+            failedMessages[_params[i]] = true;
         }
     }
 }