DockerComposeServiceConnectionsApplicationListener Class — spring-boot Architecture

Source Code

core/spring-boot-docker-compose/src/main/java/org/springframework/boot/docker/compose/service/connection/DockerComposeServiceConnectionsApplicationListener.java lines 46–101

class DockerComposeServiceConnectionsApplicationListener
		implements ApplicationListener<DockerComposeServicesReadyEvent> {

	private final ConnectionDetailsFactories factories;

	DockerComposeServiceConnectionsApplicationListener() {
		this(new ConnectionDetailsFactories(null));
	}

	DockerComposeServiceConnectionsApplicationListener(ConnectionDetailsFactories factories) {
		this.factories = factories;
	}

	@Override
	public void onApplicationEvent(DockerComposeServicesReadyEvent event) {
		ApplicationContext applicationContext = event.getSource();
		if (applicationContext instanceof BeanDefinitionRegistry registry) {
			Environment environment = applicationContext.getEnvironment();
			registerConnectionDetails(registry, environment, event.getRunningServices());
		}
	}

	private void registerConnectionDetails(BeanDefinitionRegistry registry, Environment environment,
			List<RunningService> runningServices) {
		for (RunningService runningService : runningServices) {
			DockerComposeConnectionSource source = new DockerComposeConnectionSource(runningService, environment);
			this.factories.getConnectionDetails(source, false).forEach((connectionDetailsType, connectionDetails) -> {
				register(registry, runningService, connectionDetailsType, connectionDetails);
				this.factories.getConnectionDetails(connectionDetails, false)
					.forEach((adaptedType, adaptedDetails) -> register(registry, runningService, adaptedType,
							adaptedDetails));
			});
		}
	}

	@SuppressWarnings("unchecked")
	private <T> void register(BeanDefinitionRegistry registry, RunningService runningService,
			Class<?> connectionDetailsType, ConnectionDetails connectionDetails) {
		ContainerImageMetadata containerMetadata = new ContainerImageMetadata(runningService.image().toString());
		String beanName = getBeanName(runningService, connectionDetailsType);
		Class<T> beanType = (Class<T>) connectionDetails.getClass();
		Supplier<T> beanSupplier = () -> (T) connectionDetails;
		RootBeanDefinition beanDefinition = new RootBeanDefinition(beanType, beanSupplier);
		containerMetadata.addTo(beanDefinition);
		registry.registerBeanDefinition(beanName, beanDefinition);
	}

	private String getBeanName(RunningService runningService, Class<?> connectionDetailsType) {
		List<String> parts = new ArrayList<>();
		parts.add(ClassUtils.getShortNameAsProperty(connectionDetailsType));
		parts.add("for");
		parts.addAll(Arrays.asList(runningService.name().split("-")));
		return StringUtils.uncapitalize(parts.stream().map(StringUtils::capitalize).collect(Collectors.joining()));
	}

}