AutoConfigurationExcludeFilter Class — spring-boot Architecture

Source Code

core/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationExcludeFilter.java lines 38–77

public class AutoConfigurationExcludeFilter implements TypeFilter, BeanClassLoaderAware {

	@SuppressWarnings("NullAway.Init")
	private ClassLoader beanClassLoader;

	private volatile @Nullable List<String> autoConfigurations;

	@Override
	public void setBeanClassLoader(ClassLoader beanClassLoader) {
		this.beanClassLoader = beanClassLoader;
	}

	@Override
	public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory)
			throws IOException {
		return isConfiguration(metadataReader) && isAutoConfiguration(metadataReader);
	}

	private boolean isConfiguration(MetadataReader metadataReader) {
		return metadataReader.getAnnotationMetadata().isAnnotated(Configuration.class.getName());
	}

	private boolean isAutoConfiguration(MetadataReader metadataReader) {
		boolean annotatedWithAutoConfiguration = metadataReader.getAnnotationMetadata()
			.isAnnotated(AutoConfiguration.class.getName());
		return annotatedWithAutoConfiguration
				|| getAutoConfigurations().contains(metadataReader.getClassMetadata().getClassName());
	}

	protected List<String> getAutoConfigurations() {
		List<String> autoConfigurations = this.autoConfigurations;
		if (autoConfigurations == null) {
			ImportCandidates importCandidates = ImportCandidates.load(AutoConfiguration.class, this.beanClassLoader);
			autoConfigurations = importCandidates.getCandidates();
			this.autoConfigurations = autoConfigurations;
		}
		return autoConfigurations;
	}

}