Return `address` from the `from` and `to` fields in a GraphQL (#6198)

When the world state is not retrievable, instead of returning java.lang.reflect.InvocationTargetException in the from field and null in the to field in GraphQL, return an empty account with the address only.

Signed-off-by: Wetitpig <winsto003@hotmail.com>
Signed-off-by: Danno Ferrin <danno.ferrin@swirldslabs.com>

CHANGELOG.md

@@ -13,6 +13,7 @@
 - Update OpenJDK latest Docker image to use Java 21 [#6189](https://github.com/hyperledger/besu/pull/6189)
 - Allow a transaction selection plugin to specify custom selection results [#6190](https://github.com/hyperledger/besu/pull/6190)
 - Add `rpc-gas-cap` to allow users to set gas limit to the RPC methods used to simulate transactions[#6156](https://github.com/hyperledger/besu/pull/6156)
+- Fix the unavailability of `address` field when returning an `Account` entity on GraphQL in case of unreachable world state [#6198](https://github.com/hyperledger/besu/pull/6198)
 
 ### Bug fixes
 - Fix Docker image name clash between Besu and evmtool [#6194](https://github.com/hyperledger/besu/pull/6194)

ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/graphql/internal/pojoadapter/LogAdapter.java

@@ -14,6 +14,7 @@
  */
 package org.hyperledger.besu.ethereum.api.graphql.internal.pojoadapter;
 
+import org.hyperledger.besu.datatypes.Address;
 import org.hyperledger.besu.datatypes.Hash;
 import org.hyperledger.besu.ethereum.api.query.BlockchainQueries;
 import org.hyperledger.besu.ethereum.api.query.TransactionWithMetadata;
@@ -63,9 +64,9 @@ public class LogAdapter extends AdapterBase {
       blockNumber = bn;
     }
 
+    final Address logger = logWithMetadata.getLogger();
     return query
-        .getAndMapWorldState(
-            blockNumber, ws -> Optional.of(new AccountAdapter(ws.get(logWithMetadata.getLogger()))))
-        .get();
+        .getAndMapWorldState(blockNumber, ws -> Optional.of(new AccountAdapter(ws.get(logger))))
+        .orElse(new EmptyAccountAdapter(logger));
   }
 }

ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/graphql/internal/pojoadapter/TransactionAdapter.java

@@ -82,35 +82,36 @@ public class TransactionAdapter extends AdapterBase {
 
   public AccountAdapter getFrom(final DataFetchingEnvironment environment) {
     final BlockchainQueries query = getBlockchainQueries(environment);
-    Long blockNumber = environment.getArgument("block");
-    if (blockNumber == null) {
-      blockNumber = transactionWithMetadata.getBlockNumber().orElseGet(query::headBlockNumber);
-    }
+    final Long blockNumber =
+        Optional.<Long>ofNullable(environment.getArgument("block"))
+            .or(transactionWithMetadata::getBlockNumber)
+            .orElseGet(query::headBlockNumber);
+
+    final Address addr = transactionWithMetadata.getTransaction().getSender();
     return query
         .getAndMapWorldState(
             blockNumber,
-            mutableWorldState ->
-                Optional.of(
-                    new AccountAdapter(
-                        mutableWorldState.get(
-                            transactionWithMetadata.getTransaction().getSender()))))
-        .get();
+            mutableWorldState -> Optional.of(new AccountAdapter(mutableWorldState.get(addr))))
+        .orElse(new EmptyAccountAdapter(addr));
   }
 
   public Optional<AccountAdapter> getTo(final DataFetchingEnvironment environment) {
     final BlockchainQueries query = getBlockchainQueries(environment);
-    Long blockNumber = environment.getArgument("block");
-    if (blockNumber == null) {
-      blockNumber = transactionWithMetadata.getBlockNumber().orElseGet(query::headBlockNumber);
-    }
+    final Long blockNumber =
+        Optional.<Long>ofNullable(environment.getArgument("block"))
+            .or(transactionWithMetadata::getBlockNumber)
+            .orElseGet(query::headBlockNumber);
 
-    return query.getAndMapWorldState(
-        blockNumber,
-        ws ->
-            transactionWithMetadata
-                .getTransaction()
-                .getTo()
-                .map(address -> new AccountAdapter(address, ws.get(address))));
+    return transactionWithMetadata
+        .getTransaction()
+        .getTo()
+        .flatMap(
+            address ->
+                query
+                    .getAndMapWorldState(
+                        blockNumber,
+                        ws -> Optional.of(new AccountAdapter(address, ws.get(address))))
+                    .or(() -> Optional.of(new EmptyAccountAdapter(address))));
   }
 
   public Wei getValue() {
@@ -197,8 +198,10 @@ public class TransactionAdapter extends AdapterBase {
           return Optional.empty();
         }
         final long blockNumber = bn.orElseGet(txBlockNumber::get);
-        return query.getAndMapWorldState(
-            blockNumber, ws -> Optional.of(new AccountAdapter(ws.get(addr.get()))));
+        return query
+            .getAndMapWorldState(
+                blockNumber, ws -> Optional.of(new AccountAdapter(ws.get(addr.get()))))
+            .or(() -> Optional.of(new EmptyAccountAdapter(addr.get())));
       }
     }
     return Optional.empty();