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Defensive MBeanExporterHelper Registration

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If the initializer is somehow called more than once, context
initialization will fail with default Boot 2.1 settings, which
do not allow bean overrides.
This commit is contained in:
Gary Russell
2018-10-11 12:25:06 -04:00
committed by Artem Bilan
parent 58fe203c0e
commit 49f0a33791
1 changed files with 4 additions and 2 deletions
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6
spring-integration-jmx/src/main/java/org/springframework/integration/jmx/config/JmxIntegrationConfigurationInitializer.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2014-2016 the original author or authors.
* Copyright 2014-2018 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.
@@ -27,6 +27,7 @@ import org.springframework.integration.monitor.IntegrationMBeanExporter;
* The JMX Integration infrastructure {@code beanFactory} initializer.
*
* @author Artem Bilan
* @author Gary Russell
* @since 4.0
*/
public class JmxIntegrationConfigurationInitializer implements IntegrationConfigurationInitializer {
@@ -39,7 +40,8 @@ public class JmxIntegrationConfigurationInitializer implements IntegrationConfig
}
private void registerMBeanExporterHelperIfNecessary(ConfigurableListableBeanFactory beanFactory) {
if (beanFactory.getBeanNamesForType(IntegrationMBeanExporter.class, false, false).length > 0) {
if (!beanFactory.containsBean(MBEAN_EXPORTER_HELPER_BEAN_NAME)
&& beanFactory.getBeanNamesForType(IntegrationMBeanExporter.class, false, false).length > 0) {
((BeanDefinitionRegistry) beanFactory).registerBeanDefinition(MBEAN_EXPORTER_HELPER_BEAN_NAME,
new RootBeanDefinition(MBeanExporterHelper.class));
}