ContextCloserListener Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/builder/ParentContextCloserApplicationListener.java lines 82–117

	protected static class ContextCloserListener implements ApplicationListener<ContextClosedEvent> {

		private final WeakReference<ConfigurableApplicationContext> childContext;

		public ContextCloserListener(ConfigurableApplicationContext childContext) {
			this.childContext = new WeakReference<>(childContext);
		}

		@Override
		public void onApplicationEvent(ContextClosedEvent event) {
			ConfigurableApplicationContext context = this.childContext.get();
			if ((context != null) && (event.getApplicationContext() == context.getParent()) && context.isActive()) {
				context.close();
			}
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj) {
				return true;
			}
			if (obj == null) {
				return false;
			}
			if (obj instanceof ContextCloserListener other) {
				return ObjectUtils.nullSafeEquals(this.childContext.get(), other.childContext.get());
			}
			return super.equals(obj);
		}

		@Override
		public int hashCode() {
			return ObjectUtils.nullSafeHashCode(this.childContext.get());
		}

	}