eth/api_backend: check nil finalized block in HeaderByNumber (#359)

This commit adds nil check for finalized block before getting the header in HeaderByNumber.
axieinfinity · Oct 2, 2023 · b968f44 · b968f44
1 parent 7a0fdd4
commit b968f44
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/eth/api_backend.go b/eth/api_backend.go
@@ -75,7 +75,12 @@ func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumb
 		return b.eth.blockchain.CurrentBlock().Header(), nil
 	}
 	if number == rpc.FinalizedBlockNumber {
-		return b.eth.blockchain.FinalizedBlock().Header(), nil
+		finalizedBlock := b.eth.blockchain.FinalizedBlock()
+		if finalizedBlock != nil {
+			return finalizedBlock.Header(), nil
+		} else {
+			return nil, errors.New("header not found")
+		}
 	}
 
 	return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil