From ba0122279bf96a817d68300da6986293ccd64975 Mon Sep 17 00:00:00 2001
From: Yorke Rhodes <yorke@hyperlane.xyz>
Date: Thu, 7 Nov 2024 14:26:57 -0500
Subject: [PATCH] feat: use message context in IGP derivation too (#4836)

### Description

Speeds up IGP derivation in TS relayer

### Backward compatibility

Yes

### Testing

Manual
---
 .changeset/new-olives-applaud.md         | 5 +++++
 typescript/sdk/src/hook/EvmHookReader.ts | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/new-olives-applaud.md

diff --git a/.changeset/new-olives-applaud.md b/.changeset/new-olives-applaud.md
new file mode 100644
index 000000000..c0f18e6d3
--- /dev/null
+++ b/.changeset/new-olives-applaud.md
@@ -0,0 +1,5 @@
+---
+"@hyperlane-xyz/sdk": patch
+---
+
+feat: use message context in hook reader IGP derivation
diff --git a/typescript/sdk/src/hook/EvmHookReader.ts b/typescript/sdk/src/hook/EvmHookReader.ts
index f84eecc8a..9ebcd8ae0 100644
--- a/typescript/sdk/src/hook/EvmHookReader.ts
+++ b/typescript/sdk/src/hook/EvmHookReader.ts
@@ -243,7 +243,9 @@ export class EvmHookReader extends HyperlaneReader implements HookReader {
 
     let oracleKey: string | undefined;
 
-    const domainIds = this.multiProvider.getKnownDomainIds();
+    const domainIds = this.messageContext
+      ? [this.messageContext.parsed.destination]
+      : this.multiProvider.getKnownDomainIds();
 
     const allKeys = await concurrentMap(
       this.concurrency,