RPC - eth_getLogs: Return block not found instead of empty logs (#8290)

Signed-off-by: Gabriel-Trintinalia <gabriel.trintinalia@consensys.net>

CHANGELOG.md

@@ -17,6 +17,7 @@
 ### Additions and Improvements
 - Add TLS/mTLS options and configure the GraphQL HTTP service[#7910](https://github.com/hyperledger/besu/pull/7910)
 - Allow plugins to propose transactions during block creation [#8268](https://github.com/hyperledger/besu/pull/8268)
+- Update `eth_getLogs` to return a `Block not found` error when the requested block is not found. [#8290](https://github.com/hyperledger/besu/pull/8290)
 ### Bug fixes
 - Upgrade Netty to version 4.1.118 to fix CVE-2025-24970 [#8275](https://github.com/hyperledger/besu/pull/8275)
 - Add missing RPC method `debug_accountRange` to `RpcMethod.java` and implemented its handler. [#8153](https://github.com/hyperledger/besu/issues/8153)

ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthGetLogs.java

@@ -73,8 +73,18 @@ public class EthGetLogs implements JsonRpcMethod {
             .getBlockHash()
             .map(
                 blockHash ->
-                    blockchain.matchingLogs(
-                        blockHash, filter.getLogsQuery(), requestContext::isAlive))
+                    blockchain
+                        .getBlockHeaderByHash(blockHash)
+                        .map(
+                            blockHeader ->
+                                blockchain.matchingLogs(
+                                    blockHeader.getBlockHash(),
+                                    filter.getLogsQuery(),
+                                    requestContext::isAlive))
+                        .orElseThrow(
+                            () ->
+                                new InvalidJsonRpcParameters(
+                                    "Block not found", RpcErrorType.BLOCK_NOT_FOUND)))
             .orElseGet(
                 () -> {
                   final long fromBlockNumber;

ethereum/api/src/test/resources/org/hyperledger/besu/ethereum/api/jsonrpc/eth/eth_getLogs_blockhash_missingBlockHash.json

@@ -12,7 +12,10 @@
   "response": {
     "jsonrpc": "2.0",
     "id": 406,
-    "result" : [ ]
+    "error" : {
+      "code": -32000,
+      "message": "Block not found"
+    }
   },
   "statusCode": 200
 }