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 */
017package org.apache.camel.spi;
018
019import java.io.Closeable;
020
021import org.apache.camel.CamelContext;
022import org.apache.camel.impl.CamelContextTrackerRegistry;
023
024/**
025 * A {@link CamelContext} creation tracker.
026 */
027public class CamelContextTracker implements Closeable {
028
029    public interface Filter {
030
031        boolean accept(CamelContext camelContext);
032
033    }
034
035    private final Filter filter;
036
037    public CamelContextTracker() {
038        filter = new Filter() {
039            public boolean accept(CamelContext camelContext) {
040                return !camelContext.getClass().getName().contains("Proxy");
041            }
042        };
043    }
044
045    public CamelContextTracker(Filter filter) {
046        this.filter = filter;
047    }
048
049    /**
050     * Called to determine whether this tracker should accept the given context.
051     */
052    public boolean accept(CamelContext camelContext) {
053        return filter == null || filter.accept(camelContext);
054    }
055
056    /**
057     * Called when a context is created.
058     */
059    public void contextCreated(CamelContext camelContext) {
060        // do nothing
061    }
062
063    public final void open() {
064        CamelContextTrackerRegistry.INSTANCE.addTracker(this);
065    }
066
067    public final void close() {
068        CamelContextTrackerRegistry.INSTANCE.removeTracker(this);
069    }
070}