content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.component.milo.call;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.function.Function;
  
  import org.apache.camel.component.milo.client.MiloClientConsumer;
  import org.apache.camel.component.milo.server.internal.CamelServerItem;
  import org.eclipse.milo.opcua.sdk.core.Reference;
  import org.eclipse.milo.opcua.sdk.server.Lifecycle;
  import org.eclipse.milo.opcua.sdk.server.ManagedNamespaceWithLifecycle;
  import org.eclipse.milo.opcua.sdk.server.OpcUaServer;
  import org.eclipse.milo.opcua.sdk.server.items.DataItem;
  import org.eclipse.milo.opcua.sdk.server.items.MonitoredItem;
  import org.eclipse.milo.opcua.sdk.server.methods.AbstractMethodInvocationHandler;
  import org.eclipse.milo.opcua.sdk.server.nodes.UaFolderNode;
  import org.eclipse.milo.opcua.sdk.server.nodes.UaMethodNode;
  import org.eclipse.milo.opcua.sdk.server.util.SubscriptionModel;
  import org.eclipse.milo.opcua.stack.core.Identifiers;
  import org.eclipse.milo.opcua.stack.core.types.builtin.LocalizedText;
  import org.eclipse.milo.opcua.stack.core.types.builtin.NodeId;
  import org.eclipse.milo.opcua.stack.core.types.builtin.QualifiedName;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class MockCamelNamespace extends ManagedNamespaceWithLifecycle {
  
      public static final String URI = "urn:org:apache:camel:mock";
      public static final int FOLDER_ID = 1;
      public static final int CALL_ID = 2;
  
      private static final Logger LOG = LoggerFactory.getLogger(MiloClientConsumer.class);
  
      private final SubscriptionModel subscriptionModel;
  
      private final Function<UaMethodNode, AbstractMethodInvocationHandler> callMethodCreator;
  
      private UaFolderNode folder;
  
      private final Map<String, CamelServerItem> itemMap = new HashMap<>();
  
      public MockCamelNamespace(final OpcUaServer server,
                                Function<UaMethodNode, AbstractMethodInvocationHandler> callMethodCreator) {
          super(server, URI);
  
          this.subscriptionModel = new SubscriptionModel(server, this);
          this.callMethodCreator = callMethodCreator;
  
          super.getLifecycleManager().addLifecycle(new Lifecycle() {
  
              @Override
              public void startup() {
                  LOG.trace("CamelNamespace startup");
                  createNodes();
              }
  
              @Override
              public void shutdown() {
                  LOG.trace("CamelNamespace shutdown");
              }
          });
      }
  
      private void createNodes() {
  
          // create structure
  
          final NodeId nodeId = newNodeId(FOLDER_ID);
          final QualifiedName name = newQualifiedName("camel");
          final LocalizedText displayName = LocalizedText.english("Camel");
  
          this.folder = new UaFolderNode(getNodeContext(), nodeId, name, displayName);
          getNodeManager().addNode(this.folder);
  
          // register reference to structure
  
          folder.addReference(new Reference(
                  folder.getNodeId(),
                  Identifiers.Organizes,
                  Identifiers.ObjectsFolder.expanded(),
                  false));
  
          addCallMethod(folder);
      }
  
      private void addCallMethod(UaFolderNode folderNode) {
          UaMethodNode methodNode = UaMethodNode.builder(getNodeContext())
                  .setNodeId(new NodeId(getNamespaceIndex(), CALL_ID))
                  .setBrowseName(newQualifiedName("call"))
                  .setDisplayName(new LocalizedText(null, "call"))
                  .setDescription(
                          LocalizedText.english("Returns the \"out-\"+entry parameter"))
                  .build();
  
          AbstractMethodInvocationHandler callMethod = callMethodCreator.apply(methodNode);
          methodNode.setInputArguments(callMethod.getInputArguments());
          methodNode.setOutputArguments(callMethod.getOutputArguments());
          methodNode.setInvocationHandler(callMethod);
  
          getNodeManager().addNode(methodNode);
  
          methodNode.addReference(new Reference(
                  methodNode.getNodeId(),
                  Identifiers.HasComponent,
                  folderNode.getNodeId().expanded(),
                  false));
  
          methodNode.addReference(new Reference(
                  methodNode.getNodeId(),
                  Identifiers.HasComponent,
                  folderNode.getNodeId().expanded(),
                  false));
      }
  
      @Override
      public void onDataItemsCreated(final List<DataItem> dataItems) {
          this.subscriptionModel.onDataItemsCreated(dataItems);
      }
  
      @Override
      public void onDataItemsModified(final List<DataItem> dataItems) {
          this.subscriptionModel.onDataItemsModified(dataItems);
      }
  
      @Override
      public void onDataItemsDeleted(final List<DataItem> dataItems) {
          this.subscriptionModel.onDataItemsDeleted(dataItems);
      }
  
      @Override
      public void onMonitoringModeChanged(final List<MonitoredItem> monitoredItems) {
          this.subscriptionModel.onMonitoringModeChanged(monitoredItems);
      }
  }
  