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framework-spring_auto_reconfiguration.md

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Spring Auto-reconfiguration Framework

The Spring Auto-reconfiguration Framework causes an application to be automatically reconfigured to work with configured cloud services.

Detection Criterion Existence of a spring-core*.jar file in the application directory
Tags spring-auto-reconfiguration=<version>
Tags are printed to standard output by the buildpack detect script

If a /WEB-INF/web.xml file exists, the framework will modify it in addition to making the auto-reconfiguration JAR available on the classpath. This modification consists of adding org.cloudfoundry.reconfiguration.spring.CloudProfileApplicationContextInitializer, org.cloudfoundry.reconfiguration.spring.CloudPropertySourceApplicationContextInitializer, and org.cloudfoundry.reconfiguration.spring.CloudAutoReconfigurationApplicationContextInitializer to the collection of contextInitializerClasses. The Spring Auto-reconfiguration Framework also adds the cloud profile to any existing Spring profiles such as those defined in the SPRING_PROFILES_ACTIVE environment variable.

Configuration

For general information on configuring the buildpack, including how to specify configuration values through environment variables, refer to Configuration and Extension.

The framework can be configured by modifying the config/spring_auto_reconfiguration.yml file in the buildpack fork. The framework uses the Repository utility support and so it supports the version syntax defined there.

Name Description
enabled Whether to attempt auto-reconfiguration
repository_root The URL of the Auto-reconfiguration repository index (details).
version The version of Auto-reconfiguration to use. Candidate versions can be found in this listing.