Java tutorial
/* * Copyright (c) 2010-2013 the original author or authors * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ package org.jmxtrans.embedded.spring; import org.jmxtrans.embedded.EmbeddedJmxTrans; import org.jmxtrans.embedded.EmbeddedJmxTransException; import org.jmxtrans.embedded.config.ConfigurationParser; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.BeanNameAware; import org.springframework.beans.factory.DisposableBean; import org.springframework.beans.factory.FactoryBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.io.Resource; import org.springframework.core.io.ResourceLoader; import org.springframework.jmx.export.naming.SelfNaming; import org.springframework.util.StringUtils; import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; import javax.management.MalformedObjectNameException; import javax.management.ObjectName; import java.util.*; /** * {@link org.jmxtrans.embedded.EmbeddedJmxTrans} factory for Spring Framework integration. * <p/> * Default {@linkplain #configurationUrls} : * <ul> * <li><code>classpath:jmxtrans.json</code>: expected to be provided by the application</li> * <li><code>classpath:org/jmxtrans/embedded/config/jmxtrans-internals.json</code>: provided by jmxtrans jar for its internal monitoring</li> * </ul> * * @author <a href="mailto:cleclerc@xebia.fr">Cyrille Le Clerc</a> */ public class EmbeddedJmxTransFactory implements FactoryBean<SpringEmbeddedJmxTrans>, BeanNameAware { private final static String DEFAULT_CONFIGURATION_URL = "classpath:jmxtrans.json, classpath:org/jmxtrans/embedded/config/jmxtrans-internals.json"; private final Logger logger = LoggerFactory.getLogger(getClass()); private List<String> configurationUrls; private SpringEmbeddedJmxTrans embeddedJmxTrans; private ResourceLoader resourceLoader; private boolean ignoreConfigurationNotFound = false; private String beanName = "jmxtrans"; @Autowired public EmbeddedJmxTransFactory(ResourceLoader resourceLoader) { this.resourceLoader = resourceLoader; } @Override public SpringEmbeddedJmxTrans getObject() throws Exception { logger.info("Load JmxTrans with configuration '{}'", configurationUrls); if (embeddedJmxTrans == null) { if (configurationUrls == null) { configurationUrls = Collections.singletonList(DEFAULT_CONFIGURATION_URL); } ConfigurationParser parser = new ConfigurationParser(); SpringEmbeddedJmxTrans newJmxTrans = new SpringEmbeddedJmxTrans(); newJmxTrans.setObjectName("org.jmxtrans.embedded:type=EmbeddedJmxTrans,name=" + beanName); for (String delimitedConfigurationUrl : configurationUrls) { String[] tokens = StringUtils.commaDelimitedListToStringArray(delimitedConfigurationUrl); tokens = StringUtils.trimArrayElements(tokens); for (String configurationUrl : tokens) { configurationUrl = configurationUrl.trim(); logger.debug("Load configuration {}", configurationUrl); Resource configuration = resourceLoader.getResource(configurationUrl); if (configuration.exists()) { try { parser.mergeEmbeddedJmxTransConfiguration(configuration.getInputStream(), newJmxTrans); } catch (Exception e) { throw new EmbeddedJmxTransException("Exception loading configuration " + configuration, e); } } else if (ignoreConfigurationNotFound) { logger.debug("Ignore missing configuration file {}", configuration); } else { throw new EmbeddedJmxTransException("Configuration file " + configuration + " not found"); } } } embeddedJmxTrans = newJmxTrans; logger.info("Created EmbeddedJmxTrans with configuration {})", configurationUrls); embeddedJmxTrans.start(); } return embeddedJmxTrans; } @Override public Class<?> getObjectType() { return EmbeddedJmxTrans.class; } @Override public boolean isSingleton() { return true; } /** * @param configurationUrl coma delimited list */ public void setConfigurationUrl(String configurationUrl) { if (this.configurationUrls == null) { this.configurationUrls = new ArrayList<String>(); } this.configurationUrls.add(configurationUrl); } public void setConfigurationUrls(List<String> configurationUrls) { if (this.configurationUrls == null) { this.configurationUrls = new ArrayList<String>(); } this.configurationUrls.addAll(configurationUrls); } public void setIgnoreConfigurationNotFound(boolean ignoreConfigurationNotFound) { this.ignoreConfigurationNotFound = ignoreConfigurationNotFound; } @Override public void setBeanName(String beanName) { this.beanName = beanName; } }