enhanced error message - smart contract permissioning config check (#1709)

* enhanced error message when smart contract validation fails interface version check

Signed-off-by: Sally MacFarlane <sally.macfarlane@consensys.net>

Co-authored-by: mark-terry <36909937+mark-terry@users.noreply.github.com>

ethereum/permissioning/src/main/java/org/hyperledger/besu/ethereum/permissioning/NodePermissioningControllerFactory.java

@@ -104,7 +104,9 @@ public class NodePermissioningControllerFactory {
         .ifPresent(
             config -> {
               if (config.isSmartContractNodeAllowlistEnabled()) {
-                validatePermissioningContract(nodePermissioningController);
+                validatePermissioningContract(
+                    nodePermissioningController,
+                    permissioningConfiguration.getSmartContractConfig().get());
               }
             });
 
@@ -145,7 +147,8 @@ public class NodePermissioningControllerFactory {
   }
 
   private void validatePermissioningContract(
-      final NodePermissioningController nodePermissioningController) {
+      final NodePermissioningController nodePermissioningController,
+      final SmartContractPermissioningConfiguration smartContractPermissioningConfig) {
     LOG.debug("Validating onchain node permissioning smart contract configuration");
 
     try {
@@ -156,8 +159,11 @@ public class NodePermissioningControllerFactory {
           EnodeURL.fromString(
               "enode://6f8a80d14311c39f35f516fa664deaaaa13e85b2f7493f37f6144d86991ec012937307647bd3b9a82abe2974e1407241d54947bbb39763a4cac9f77166ad92a0@10.3.58.6:30303"));
     } catch (Exception e) {
-      final String msg = "Error validating onchain node permissioning smart contract configuration";
-      LOG.error(msg + ":", e);
+      final String msg =
+          String.format(
+              "Error: node permissioning contract at address %s does not match the expected interface version %s.",
+              smartContractPermissioningConfig.getNodeSmartContractAddress(),
+              smartContractPermissioningConfig.getNodeSmartContractInterfaceVersion());
       throw new IllegalStateException(msg, e);
     }
   }

ethereum/permissioning/src/test/java/org/hyperledger/besu/ethereum/permissioning/node/NodePermissioningControllerFactoryTest.java

@@ -275,6 +275,7 @@ public class NodePermissioningControllerFactoryTest {
 
     assertThat(thrown)
         .isInstanceOf(IllegalStateException.class)
-        .hasMessage("Error validating onchain node permissioning smart contract configuration");
+        .hasMessage(
+            "Error: node permissioning contract at address 0x0000000000000000000000000000000000001234 does not match the expected interface version 1.");
   }
 }