New posts for Spring and Hibernate

2026-11-06 01:05:27 +05:30
parent 51913ad9d4
commit dc13293046
136 changed files with 5268 additions and 0 deletions
@@ -0,0 +1,81 @@
+# Spring Boot 4.1.2 sources: the order SpringApplication.run() calls things in, and callRunners
+
+--- SpringApplication.run(): from refresh to ready (lines containing the calls) ---
+18: refreshContext(context);
+19: afterRefresh(context, applicationArguments);
+24: listeners.started(context, timeTakenToStarted);
+25: callRunners(context, applicationArguments);
+28: throw handleRunFailure(context, ex, listeners);
+32: listeners.ready(context, startup.ready());
+36: throw handleRunFailure(context, ex, null);
+
+--- SpringApplication.callRunners ---
+	private void callRunners(ConfigurableApplicationContext context, ApplicationArguments args) {
+		ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
+		String[] beanNames = beanFactory.getBeanNamesForType(Runner.class);
+		Map<Runner, String> instancesToBeanNames = new IdentityHashMap<>();
+		for (String beanName : beanNames) {
+			instancesToBeanNames.put(beanFactory.getBean(beanName, Runner.class), beanName);
+		}
+		Comparator<Object> comparator = getOrderComparator(beanFactory)
+			.withSourceProvider(new FactoryAwareOrderSourceProvider(beanFactory, instancesToBeanNames));
+		instancesToBeanNames.keySet().stream().sorted(comparator).forEach((runner) -> callRunner(runner, args));
+	}
+
+--- SpringApplication.callRunner (what happens to a bean that is both kinds) ---
+	private void callRunner(Runner runner, ApplicationArguments args) {
+		if (runner instanceof ApplicationRunner) {
+			callRunner(ApplicationRunner.class, runner, (applicationRunner) -> applicationRunner.run(args));
+		}
+		if (runner instanceof CommandLineRunner) {
+			callRunner(CommandLineRunner.class, runner,
+					(commandLineRunner) -> commandLineRunner.run(args.getSourceArgs()));
+		}
+	}
+
+--- SpringApplication.callRunner(Class, Runner, ThrowingConsumer) (where 'Failed to execute' comes from) ---
+	private <R extends Runner> void callRunner(Class<R> type, Runner runner, ThrowingConsumer<R> call) {
+		call.throwing(
+				(message, ex) -> new IllegalStateException("Failed to execute " + ClassUtils.getShortName(type), ex))
+			.accept((R) runner);
+	}
+
+--- EventPublishingRunListener.started / ready ---
+	public void started(ConfigurableApplicationContext context, @Nullable Duration timeTaken) {
+		context.publishEvent(new ApplicationStartedEvent(this.application, this.args, context, timeTaken));
+		AvailabilityChangeEvent.publish(context, LivenessState.CORRECT);
+	}
+	public void ready(ConfigurableApplicationContext context, @Nullable Duration timeTaken) {
+		context.publishEvent(new ApplicationReadyEvent(this.application, this.args, context, timeTaken));
+		AvailabilityChangeEvent.publish(context, ReadinessState.ACCEPTING_TRAFFIC);
+	}
+
+--- the marker interface that both runners extend ---
+interface Runner {
+public interface CommandLineRunner extends Runner {
+public interface ApplicationRunner extends Runner {
+
+--- the same method in Spring Boot 3.0.13 ---
+	private void callRunners(ApplicationContext context, ApplicationArguments args) {
+		context.getBeanProvider(Runner.class).orderedStream().forEach((runner) -> {
+			if (runner instanceof ApplicationRunner applicationRunner) {
+				callRunner(applicationRunner, args);
+			}
+			if (runner instanceof CommandLineRunner commandLineRunner) {
+				callRunner(commandLineRunner, args);
+			}
+		});
+	}
+
+--- the same method in Spring Boot 3.1.12 ---
+	private void callRunners(ConfigurableApplicationContext context, ApplicationArguments args) {
+		ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
+		String[] beanNames = beanFactory.getBeanNamesForType(Runner.class);
+		Map<Runner, String> instancesToBeanNames = new IdentityHashMap<>();
+		for (String beanName : beanNames) {
+			instancesToBeanNames.put(beanFactory.getBean(beanName, Runner.class), beanName);
+		}
+		Comparator<Object> comparator = getOrderComparator(beanFactory)
+			.withSourceProvider(new FactoryAwareOrderSourceProvider(beanFactory, instancesToBeanNames));
+		instancesToBeanNames.keySet().stream().sorted(comparator).forEach((runner) -> callRunner(runner, args));
+	}