6cdb34410b
Prior to this commit, DynamicPropertyRegistry could only be used with a
static @DynamicPropertySource method in an integration test class;
however, it can also be useful to be able to register a "dynamic
property" from within a test's ApplicationContext -- for example, in a
@Bean method in a @Configuration class that is specific to testing
scenarios.
To support such use cases, this commit updates the dynamic property
source infrastructure so that a DynamicPropertyRegistry is always
registered as a singleton bean in a test's ApplicationContext. This
allows DynamicPropertyRegistry to be autowired into a @Configuration
class or supplied to a @Bean method as an argument as shown in the
following example.
@Bean
@DynamicPropertySource
ApiServer apiServer(DynamicPropertyRegistry registry) {
ApiServer apiServer = new ApiServer();
registry.add("api.url", apiServer::getUrl);
return apiServer;
}
Note that the use of @DynamicPropertySource on the @Bean method is
optional and results in the corresponding bean being eagerly
initialized so that other singleton beans in the context can be given
access to the dynamic properties sourced from that bean when those
other beans are initialized.
Side note: DynamicPropertySourceBeanInitializer temporarily implements
LoadTimeWeaverAware since doing so is currently the only way to have a
component eagerly initialized before the
ConfigurableListableBeanFactory.preInstantiateSingletons() phase.
However, we plan to introduce a first-class callback to support such
use cases in the future.
Closes gh-32271
Spring Framework 
This is the home of the Spring Framework: the foundation for all Spring projects. Collectively the Spring Framework and the family of Spring projects are often referred to simply as "Spring".
Spring provides everything required beyond the Java programming language for creating enterprise applications for a wide range of scenarios and architectures. Please read the Overview section of the reference documentation for a more complete introduction.
Code of Conduct
This project is governed by the Spring Code of Conduct. By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
Access to Binaries
For access to artifacts or a distribution zip, see the Spring Framework Artifacts wiki page.
Documentation
The Spring Framework maintains reference documentation (published and source), GitHub wiki pages, and an API reference. There are also guides and tutorials across Spring projects.
Micro-Benchmarks
See the Micro-Benchmarks wiki page.
Build from Source
See the Build from Source wiki page and the CONTRIBUTING.md file.
Continuous Integration Builds
Information regarding CI builds can be found in the Spring Framework Concourse pipeline documentation.
Stay in Touch
Follow @SpringCentral, @SpringFramework, and its team members on 𝕏. In-depth articles can be found at The Spring Blog, and releases are announced via our releases feed.
License
The Spring Framework is released under version 2.0 of the Apache License.