Trouble Overriding addNodes Method in Eclipse Milo's NodeManagementServices

[realdragonhead]

I'm currently developing an OPC UA server using Eclipse Milo and have based my implementation on the default server example provided by the project. I've extended the ManagedNamespaceWithLifecycle to include custom node management functionality by overriding the addNodes method. However, I'm encountering an issue where the default addNodes method from NodeManagementServices is being called instead of my custom implementation.

Namespace:

public class ExampleNamespace extends ManagedNamespaceWithLifecycle implements NodeManagementServices {
    public ExampleNamespace(OpcUaServer server, String namespaceUri) {
        super(server, namespaceUri);
    }

    @Override
    public void addNodes(AddNodesContext context, List<AddNodesItem> nodesToAdd) {
        System.out.println("Custom addNodes method called");
        // Implementation details
    }

    // Other methods and lifecycle hooks
}

Client Code:

public class AddNewFolderNodeExample {
    private static final String ENDPOINT_URL = "opc.tcp://localhost:12686/milo";

    public static void main(String[] args) {
        try {
            OpcUaClient client = connectClient();

            NodeId newFolderNodeId = new NodeId(1, "Test");
            QualifiedName browseName = new QualifiedName(1, "Test");

            ExtensionObject encodedAttributes = ExtensionObject.encode(
                    client.getStaticSerializationContext(),
                    new ObjectAttributes(
                            uint(0b11111),
                            LocalizedText.english("Test Folder"),
                            LocalizedText.english("Description"),
                            uint(0),
                            uint(0),
                            ubyte(0)
                    )
            );
            AddNodesItem folderNodeItem = new AddNodesItem(
                    Identifiers.ObjectsFolder.expanded(),
                    Identifiers.Organizes,
                    newFolderNodeId.expanded(),
                    browseName, NodeClass.Object,
                    encodedAttributes,
                    Identifiers.FolderType.expanded()
            );

            CompletableFuture<AddNodesResponse> response = client.addNodes(ImmutableList.of(folderNodeItem));

            System.out.println(Arrays.toString(response.get().getResults()));
        } catch (Exception e) {
            System.out.println("fail");
            System.out.println(e.getMessage());
            throw new RuntimeException(e);
        }
    }

    private static OpcUaClient connectClient() throws UaException, InterruptedException, ExecutionException {
        OpcUaClient client = OpcUaClient.create(
                ENDPOINT_URL,
                endpoints ->
                {
                    try {
                        return endpoints
                                .stream()
                                .filter(e -> e.getSecurityPolicyUri().contains("None"))
                                .findFirst();
                    } catch (Exception e) {
                        throw new RuntimeException(e);
                    }
                },
                AddNewFolderNodeExample::configClient
        );
        client.connect().get();
        return client;
    }

    private static OpcUaClientConfig configClient(OpcUaClientConfigBuilder configBuilder) {
        configBuilder.setIdentityProvider(new UsernameProvider("admin", "password2"));
        configBuilder.setSessionTimeout(UInteger.valueOf(120000));
        return configBuilder.build();
    }
}

I have ensured that the namespace index and URI are correctly configured and match between the server and client. Despite this setup, the server does not trigger my overridden addNodes method when I attempt to add nodes via the client.

Could there be a configuration issue or something I'm missing that prevents my overridden method from being recognized by the server? Any guidance or suggestions to debug this issue would be greatly appreciated.

Thank you for your help!

[kevinherron]

            NodeId newFolderNodeId = new NodeId(1, "Test");
            QualifiedName browseName = new QualifiedName(1, "Test");

Try using namespace index = 2 here. Your custom namespace should be getting added at index=2, not index=1.

[realdragonhead]

Thank you so much for your help! Everything has been resolved now.