/*
* Copyright 2002-2016 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.Arrays;
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.beans.factory.support.BeanDefinitionValidationException;
import org.springframework.context.SmartLifecycle;
import org.springframework.integration.support.management.IntegrationManagedResource;
import org.springframework.integration.support.management.TrackableComponent;
import org.springframework.jmx.export.annotation.ManagedAttribute;
import org.springframework.jmx.export.annotation.ManagedOperation;
import org.springframework.jmx.export.annotation.ManagedResource;
import org.springframework.util.Assert;
import org.springframework.util.PatternMatchUtils;
import org.springframework.util.StringUtils;
/**
* @author Mark Fisher
* @author Artem Bilan
* @author Gary Russell
*
* @since 2.0
*/
@ManagedResource
@IntegrationManagedResource
public class MessageHistoryConfigurer implements SmartLifecycle, BeanFactoryAware {
private final Log logger = LogFactory.getLog(this.getClass());
private volatile String[] componentNamePatterns = new String[] { "*" };
private volatile boolean componentNamePatternsExplicitlySet;
private final Set<String> currentlyTrackedComponentNames = new HashSet<String>();
private volatile BeanFactory beanFactory;
private volatile boolean running;
private volatile boolean autoStartup = true;
private final int phase = Integer.MIN_VALUE;
private final Object lifecycleMonitor = new Object();
/**
* The patterns for which components will be tracked; default '*' (all trackable
* components). Cannot be changed if {@link #isRunning()}; invoke {@link #stop()} first.
* @param componentNamePatterns The patterns.
*/
public void setComponentNamePatterns(String[] componentNamePatterns) {
Assert.notEmpty(componentNamePatterns, "componentNamePatterns must not be empty");
Assert.state(!this.running, "'componentNamePatterns' cannot be changed without invoking stop() first");
String[] trimmedAndSortedComponentNamePatterns = componentNamePatterns.clone();
for (int i = 0; i < componentNamePatterns.length; i++) {
trimmedAndSortedComponentNamePatterns[i] = trimmedAndSortedComponentNamePatterns[i].trim();
}
Arrays.sort(trimmedAndSortedComponentNamePatterns);
Assert.isTrue(!this.componentNamePatternsExplicitlySet
|| Arrays.equals(this.componentNamePatterns, trimmedAndSortedComponentNamePatterns),
"When more than one message history definition " +
"(@EnableMessageHistory or <message-history>)" +
" is found in the context, they all must have the same 'componentNamePatterns'");
this.componentNamePatterns = trimmedAndSortedComponentNamePatterns;
this.componentNamePatternsExplicitlySet = true;
}
/**
* A comma-delimited list of patterns for which components will be tracked; default '*' (all trackable
* components). Cannot be changed if {@link #isRunning()}; invoke {@link #stop()} first.
* @param componentNamePatterns The patterns.
*/
@ManagedAttribute(description = "comma-delimited list of patterns; must invoke stop() before changing.")
public void setComponentNamePatternsString(String componentNamePatterns) {
this.setComponentNamePatterns(StringUtils.delimitedListToStringArray(componentNamePatterns, ",", " "));
}
@ManagedAttribute
public String getComponentNamePatternsString() {
return StringUtils.arrayToCommaDelimitedString(this.componentNamePatterns);
}
/**
* The patterns for which components will be tracked; default '*' (all trackable
* components). Cannot be changed if {@link #isRunning()}; invoke {@link #stop()} first.
* All members of the set must canonically represent the same patterns - allows multiple
* EnableMessageHistory annotations as long they all have the same patterns.
* @param componentNamePatternsSet A set of lists of comma-delimited patterns.
*/
public void setComponentNamePatternsSet(Set<String> componentNamePatternsSet) {
Assert.notNull(componentNamePatternsSet, "'componentNamePatternsSet' must not be null");
Assert.state(!this.running, "'componentNamePatternsSet' cannot be changed without invoking stop() first");
for (String s : componentNamePatternsSet) {
String[] componentNamePatterns = StringUtils.delimitedListToStringArray(s, ",", " ");
Arrays.sort(componentNamePatterns);
if (this.componentNamePatternsExplicitlySet
&& !Arrays.equals(this.componentNamePatterns, componentNamePatterns)) {
throw new BeanDefinitionValidationException("When more than one message history definition " +
"(@EnableMessageHistory or <message-history>)" +
" is found in the context, they all must have the same 'componentNamePatterns'");
}
else {
this.componentNamePatterns = componentNamePatterns;
this.componentNamePatternsExplicitlySet = true;
}
}
}
@Override
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
*/
@Override
public boolean isRunning() {
return this.running;
}
@Override
public boolean isAutoStartup() {
return this.autoStartup;
}
@Override
public int getPhase() {
return this.phase;
}
@ManagedOperation
@Override
public void start() {
synchronized (this.lifecycleMonitor) {
if (!this.running && this.beanFactory instanceof ListableBeanFactory) {
for (TrackableComponent component : getTrackableComponents((ListableBeanFactory) this.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;
}
}
}
@ManagedOperation
@Override
public void stop() {
synchronized (this.lifecycleMonitor) {
if (this.running && this.beanFactory instanceof ListableBeanFactory) {
for (TrackableComponent component : getTrackableComponents((ListableBeanFactory) this.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;
this.componentNamePatternsExplicitlySet = false; // allow pattern changes
}
}
}
@Override
public void stop(Runnable callback) {
this.stop();
callback.run();
}
}