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.Objects;
  import java.util.concurrent.atomic.AtomicReference;
  
  import org.apache.qpid.proton.amqp.Binary;
  import org.apache.qpid.proton.amqp.transport.Attach;
  import org.apache.qpid.proton.amqp.transport.Begin;
  import org.apache.qpid.proton.amqp.transport.Close;
  import org.apache.qpid.proton.amqp.transport.Detach;
  import org.apache.qpid.proton.amqp.transport.Disposition;
  import org.apache.qpid.proton.amqp.transport.End;
  import org.apache.qpid.proton.amqp.transport.Flow;
  import org.apache.qpid.proton.amqp.transport.Open;
  import org.apache.qpid.proton.amqp.transport.Transfer;
  
  /**
   * Abstract base for a validation hook that is used in tests to check the values of incoming or outgoing AMQP frames.
   */
  public class AmqpFrameValidator {
  
     private AtomicReference<String> errorMessage = new AtomicReference<>();
  
     public void inspectOpen(Open open, Binary encoded) {
  
     }
  
     public void inspectBegin(Begin begin, Binary encoded) {
  
     }
  
     public void inspectAttach(Attach attach, Binary encoded) {
  
     }
  
     public void inspectFlow(Flow flow, Binary encoded) {
  
     }
  
     public void inspectTransfer(Transfer transfer, Binary encoded) {
  
     }
  
     public void inspectDisposition(Disposition disposition, Binary encoded) {
  
     }
  
     public void inspectDetach(Detach detach, Binary encoded) {
  
     }
  
     public void inspectEnd(End end, Binary encoded) {
  
     }
  
     public void inspectClose(Close close, Binary encoded) {
  
     }
  
     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) {
        Objects.requireNonNull(message, "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);
        }
     }
  }
  