SimpleTransformer.java

/*
 * 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.artemis.tests.integration.cluster.bridge;

import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.api.core.ICoreMessage;
import org.apache.activemq.artemis.api.core.Message;
import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.core.server.cluster.Transformer;

public class SimpleTransformer implements Transformer {

   @Override
   public Message transform(final Message messageParameter) {
      ICoreMessage message = messageParameter.toCore();
      SimpleString oldProp = (SimpleString) message.getObjectProperty(new SimpleString("wibble"));

      if (!oldProp.equals(new SimpleString("bing"))) {
         throw new IllegalStateException("Wrong property value!!");
      }

      // Change a property
      message.putStringProperty(new SimpleString("wibble"), new SimpleString("bong"));

      // Change the body
      ActiveMQBuffer buffer = message.getBodyBuffer();

      buffer.readerIndex(0);

      String str = buffer.readString();

      if (!str.equals("doo be doo be doo be doo")) {
         throw new IllegalStateException("Wrong body!!");
      }

      buffer.clear();

      buffer.writeString("dee be dee be dee be dee");

      return message;
   }

}