ConditionEvaluationReportListener Class — spring-boot Architecture

Source Code

core/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/logging/ConditionEvaluationReportLoggingListener.java lines 87–146

	private final class ConditionEvaluationReportListener implements GenericApplicationListener {

		private final ConfigurableApplicationContext context;

		private final ConditionEvaluationReportLogger logger;

		private ConditionEvaluationReportListener(ConfigurableApplicationContext context) {
			this.context = context;
			Supplier<ConditionEvaluationReport> reportSupplier;
			if (context instanceof GenericApplicationContext) {
				// Get the report early when the context allows early access to the bean
				// factory in case the context subsequently fails to load
				ConditionEvaluationReport report = getReport();
				reportSupplier = () -> report;
			}
			else {
				reportSupplier = this::getReport;
			}
			this.logger = new ConditionEvaluationReportLogger(ConditionEvaluationReportLoggingListener.this.logLevel,
					reportSupplier);
		}

		private ConditionEvaluationReport getReport() {
			return ConditionEvaluationReport.get(this.context.getBeanFactory());
		}

		@Override
		public int getOrder() {
			return Ordered.LOWEST_PRECEDENCE;
		}

		@Override
		public boolean supportsEventType(ResolvableType resolvableType) {
			Class<?> type = resolvableType.getRawClass();
			if (type == null) {
				return false;
			}
			return ContextRefreshedEvent.class.isAssignableFrom(type)
					|| ApplicationFailedEvent.class.isAssignableFrom(type);
		}

		@Override
		public boolean supportsSourceType(@Nullable Class<?> sourceType) {
			return true;
		}

		@Override
		public void onApplicationEvent(ApplicationEvent event) {
			if (event instanceof ContextRefreshedEvent contextRefreshedEvent) {
				if (contextRefreshedEvent.getApplicationContext() == this.context) {
					this.logger.logReport(false);
				}
			}
			else if (event instanceof ApplicationFailedEvent applicationFailedEvent
					&& applicationFailedEvent.getApplicationContext() == this.context) {
				this.logger.logReport(true);
			}
		}

	}