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.activemq.transport.amqp.client;
  
  import java.util.concurrent.atomic.AtomicReference;
  
  import org.apache.qpid.proton.engine.Connection;
  import org.apache.qpid.proton.engine.Delivery;
  import org.apache.qpid.proton.engine.Receiver;
  import org.apache.qpid.proton.engine.Sender;
  import org.apache.qpid.proton.engine.Session;
  
  /**
   * Abstract base for a validation hook that is used in tests to check the state
   * of a remote resource after a variety of lifecycle events.
   */
  public class AmqpValidator {
  
      private AtomicReference<String> errorMessage = new AtomicReference<String>();
  
      public void inspectOpenedResource(Connection connection) {
  
      }
  
      public void inspectOpenedResource(Session session) {
  
      }
  
      public void inspectOpenedResource(Sender sender) {
  
      }
  
      public void inspectOpenedResource(Receiver receiver) {
  
      }
  
      public void inspectClosedResource(Connection remoteConnection) {
  
      }
  
      public void inspectClosedResource(Session session) {
  
      }
  
      public void inspectClosedResource(Sender sender) {
  
      }
  
      public void inspectClosedResource(Receiver receiver) {
  
      }
  
      public void inspectDetachedResource(Sender sender) {
  
      }
  
      public void inspectDetachedResource(Receiver receiver) {
  
      }
  
      public void inspectDelivery(Receiver receiver, Delivery delivery) {
  
      }
  
      public void inspectDeliveryUpdate(Sender sender, Delivery delivery) {
  
      }
  
      public boolean isValid() {
          return errorMessage.get() != null;
      }
  
      public final void clearErrorMessage() {
          errorMessage.set(null);
      }
  
      public final String getErrorMessage() {
          return errorMessage.get();
      }
  
      protected final boolean markAsInvalid(String message) {
          if (message == null) {
              throw new NullPointerException("Provided error message cannot be null!");
          }
  
          return errorMessage.compareAndSet(null, message);
      }
  
      public final void assertValid() {
          final String assertionErrorMessage = errorMessage.get();
          if (assertionErrorMessage != null) {
              throw new AssertionError(assertionErrorMessage);
          }
      }
  }
  