001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.spi;
018    
019    import java.util.List;
020    
021    import org.apache.camel.model.ProcessorDefinition;
022    
023    /**
024     * A Unit of work that is also traceable with the
025     * {@link org.apache.camel.processor.interceptor.TraceInterceptor} so we can trace the excact
026     * route path a given {@link org.apache.camel.Exchange} has been processed.
027     *
028     * @version $Revision: 767825 $
029     */
030    public interface TraceableUnitOfWork extends UnitOfWork {
031    
032        /**
033         * Adds the given node that was intercepted
034         *
035         * @param node the node
036         */
037        void addInterceptedNode(ProcessorDefinition node);
038    
039        /**
040         * Gets the last intercepted node, is <tt>null</tt> if no last exists.
041         */
042        ProcessorDefinition getLastInterceptedNode();
043    
044        /**
045         * Gets the current list of intercepted nodes, representing the route path the
046         * current {@link org.apache.camel.Exchange} has taken.
047         */
048        List<ProcessorDefinition> getInterceptedNodes();
049    
050    }