org.springframework.integration.history.MessageHistoryConfigurer.java Source code

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Here is the source code for org.springframework.integration.history.MessageHistoryConfigurer.java

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/*
 * Copyright 2002-2010 the original author or authors.
 *
 * Licensed 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.springframework.integration.history;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.context.SmartLifecycle;
import org.springframework.util.Assert;
import org.springframework.util.PatternMatchUtils;

/**
 * @author Mark Fisher
 * @since 2.0
 */
public class MessageHistoryConfigurer implements SmartLifecycle, BeanFactoryAware {

    private final Log logger = LogFactory.getLog(this.getClass());

    private volatile String[] componentNamePatterns = new String[] { "*" };

    private final Set<String> currentlyTrackedComponentNames = new HashSet<String>();

    private volatile BeanFactory beanFactory;

    private volatile boolean running;

    private volatile boolean autoStartup = true;

    private int phase = Integer.MIN_VALUE;

    private final Object lifecycleMonitor = new Object();

    public void setComponentNamePatterns(String[] componentNamePatterns) {
        Assert.notEmpty(componentNamePatterns, "componentNamePatterns must not be empty");
        this.componentNamePatterns = componentNamePatterns;
    }

    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = beanFactory;
    }

    private static Collection<TrackableComponent> getTrackableComponents(ListableBeanFactory beanFactory) {
        return BeanFactoryUtils.beansOfTypeIncludingAncestors(beanFactory, TrackableComponent.class).values();
    }

    /*
     * SmartLifecycle implementation
     */

    public boolean isRunning() {
        return this.running;
    }

    public boolean isAutoStartup() {
        return this.autoStartup;
    }

    public int getPhase() {
        return this.phase;
    }

    public void start() {
        synchronized (this.lifecycleMonitor) {
            if (!this.running && this.beanFactory instanceof ListableBeanFactory) {
                for (TrackableComponent component : getTrackableComponents((ListableBeanFactory) beanFactory)) {
                    String componentName = component.getComponentName();
                    boolean shouldTrack = PatternMatchUtils.simpleMatch(this.componentNamePatterns, componentName);
                    component.setShouldTrack(shouldTrack);
                    if (shouldTrack) {
                        this.currentlyTrackedComponentNames.add(componentName);
                        if (this.logger.isInfoEnabled()) {
                            this.logger
                                    .info("Enabling MessageHistory tracking for component '" + componentName + "'");
                        }
                    }
                }
                this.running = true;
            }
        }
    }

    public void stop() {
        synchronized (this.lifecycleMonitor) {
            if (this.running && this.beanFactory instanceof ListableBeanFactory) {
                for (TrackableComponent component : getTrackableComponents((ListableBeanFactory) beanFactory)) {
                    String componentName = component.getComponentName();
                    if (this.currentlyTrackedComponentNames.contains(componentName)) {
                        component.setShouldTrack(false);
                        if (this.logger.isInfoEnabled()) {
                            this.logger.info(
                                    "Disabling MessageHistory tracking for component '" + componentName + "'");
                        }
                    }
                }
                this.currentlyTrackedComponentNames.clear();
                this.running = false;
            }
        }
    }

    public void stop(Runnable callback) {
        this.stop();
        callback.run();
    }

}