Package org.springframework.boot.autoconfigure.jmx

Source Code of org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration$Empty

/*
* Copyright 2012-2014 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.boot.autoconfigure.jmx;

import javax.management.MBeanServer;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.SearchStrategy;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableMBeanExport;
import org.springframework.context.annotation.MBeanExportConfiguration;
import org.springframework.core.env.Environment;
import org.springframework.core.type.StandardAnnotationMetadata;
import org.springframework.jmx.export.MBeanExporter;
import org.springframework.jmx.export.annotation.AnnotationJmxAttributeSource;
import org.springframework.jmx.export.annotation.AnnotationMBeanExporter;
import org.springframework.jmx.export.naming.ObjectNamingStrategy;
import org.springframework.jmx.support.MBeanServerFactoryBean;
import org.springframework.jmx.support.WebSphereMBeanServerFactoryBean;
import org.springframework.jndi.JndiObjectFactoryBean;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;

/**
* {@link EnableAutoConfiguration Auto-configuration} to enable/disable Spring's
* {@link EnableMBeanExport} mechanism based on configuration properties.
* <p>
* To disable auto export of annotation beans set <code>spring.jmx.enabled: false</code>.
*
* @author Christian Dupuis
*/
@Configuration
@ConditionalOnClass({ MBeanExporter.class })
@ConditionalOnProperty(prefix = "spring.jmx", name = "enabled", havingValue = "true", matchIfMissing = true)
public class JmxAutoConfiguration {

  @Autowired
  private Environment environment;

  @Autowired
  private BeanFactory beanFactory;

  @Autowired
  private ObjectNamingStrategy namingStrategy;

  @Bean
  @ConditionalOnMissingBean(value = MBeanExporter.class, search = SearchStrategy.CURRENT)
  public AnnotationMBeanExporter mbeanExporter() {
    // Re-use the @EnableMBeanExport configuration
    MBeanExportConfiguration config = new MBeanExportConfiguration();
    config.setEnvironment(this.environment);
    config.setBeanFactory(this.beanFactory);
    config.setImportMetadata(new StandardAnnotationMetadata(Empty.class));
    // But add a custom naming strategy
    AnnotationMBeanExporter exporter = config.mbeanExporter();
    exporter.setNamingStrategy(this.namingStrategy);
    return exporter;
  }

  @Bean
  @ConditionalOnMissingBean(ObjectNamingStrategy.class)
  public ParentAwareNamingStrategy objectNamingStrategy() {
    return new ParentAwareNamingStrategy(new AnnotationJmxAttributeSource());
  }

  @Bean
  @ConditionalOnMissingBean(MBeanServer.class)
  public MBeanServer mbeanServer() {
    SpecificPlatform platform = SpecificPlatform.get();
    if (platform != null) {
      return platform.getMBeanServer();
    }
    MBeanServerFactoryBean factory = new MBeanServerFactoryBean();
    factory.setLocateExistingServerIfPossible(true);
    factory.afterPropertiesSet();
    return factory.getObject();

  }

  @EnableMBeanExport(defaultDomain = "${spring.jmx.default_domain:}", server = "${spring.jmx.server:mbeanServer}")
  private static class Empty {

  }

  // Copied and adapted from MBeanExportConfiguration
  private static enum SpecificPlatform {

    WEBLOGIC("weblogic.management.Helper") {
      @Override
      public FactoryBean<?> getMBeanServerFactory() {
        JndiObjectFactoryBean factory = new JndiObjectFactoryBean();
        factory.setJndiName("java:comp/env/jmx/runtime");
        return factory;
      }
    },

    WEBSPHERE("com.ibm.websphere.management.AdminServiceFactory") {
      @Override
      public FactoryBean<MBeanServer> getMBeanServerFactory() {
        return new WebSphereMBeanServerFactoryBean();
      }
    };

    private final String identifyingClass;

    private SpecificPlatform(String identifyingClass) {
      this.identifyingClass = identifyingClass;
    }

    public MBeanServer getMBeanServer() {
      try {
        FactoryBean<?> factory = getMBeanServerFactory();
        if (factory instanceof InitializingBean) {
          ((InitializingBean) factory).afterPropertiesSet();
        }
        Object server = factory.getObject();
        Assert.isInstanceOf(MBeanServer.class, server);
        return (MBeanServer) server;
      }
      catch (Exception ex) {
        throw new IllegalStateException(ex);
      }
    }

    protected abstract FactoryBean<?> getMBeanServerFactory();

    public static SpecificPlatform get() {
      ClassLoader classLoader = MBeanExportConfiguration.class.getClassLoader();
      for (SpecificPlatform environment : values()) {
        if (ClassUtils.isPresent(environment.identifyingClass, classLoader)) {
          return environment;
        }
      }
      return null;
    }

  }

}
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