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 +1,97 @@
+# spring-context 7.0.10 sources: DefaultLifecycleProcessor, the object that starts and stops SmartLifecycle beans
+
+--- doStart: start() is called only when isRunning() is false ---
+	private void doStart(Map<String, ? extends Lifecycle> lifecycleBeans, String beanName,
+			boolean autoStartupOnly, @Nullable List<CompletableFuture<?>> futures) {
+
+		Lifecycle bean = lifecycleBeans.remove(beanName);
+		if (bean != null && bean != this) {
+			String[] dependenciesForBean = getBeanFactory().getDependenciesForBean(beanName);
+			for (String dependency : dependenciesForBean) {
+				doStart(lifecycleBeans, dependency, autoStartupOnly, futures);
+			}
+			if (!bean.isRunning() && (!autoStartupOnly || toBeStarted(beanName, bean))) {
+				if (futures != null) {
+					futures.add(CompletableFuture.runAsync(() -> doStart(beanName, bean), getBootstrapExecutor()));
+				}
+				else {
+					doStart(beanName, bean);
+				}
+			}
+		}
+	}
+
+--- doStop: stop() is called only when isRunning() is true ---
+	private void doStop(Map<String, ? extends Lifecycle> lifecycleBeans, final String beanName,
+			boolean pauseableOnly, final CountDownLatch latch, final Set<String> countDownBeanNames) {
+
+		Lifecycle bean = lifecycleBeans.remove(beanName);
+		if (bean != null) {
+			String[] dependentBeans = getBeanFactory().getDependentBeans(beanName);
+			for (String dependentBean : dependentBeans) {
+				doStop(lifecycleBeans, dependentBean, pauseableOnly, latch, countDownBeanNames);
+			}
+			try {
+				if (bean.isRunning()) {
+					Set<String> stoppedBeans = this.stoppedBeans;
+					if (stoppedBeans != null) {
+						stoppedBeans.add(beanName);
+					}
+					if (bean instanceof SmartLifecycle smartLifecycle) {
+						if (!pauseableOnly || smartLifecycle.isPauseable()) {
+							if (logger.isTraceEnabled()) {
+								logger.trace("Asking bean '" + beanName + "' of type [" +
+										bean.getClass().getName() + "] to stop");
+							}
+							countDownBeanNames.add(beanName);
+							smartLifecycle.stop(() -> {
+								latch.countDown();
+								countDownBeanNames.remove(beanName);
+								if (logger.isDebugEnabled()) {
+									logger.debug("Bean '" + beanName + "' completed its stop procedure");
+								}
+							});
+						}
+						else {
+							// Don't wait for beans that aren't pauseable...
+							latch.countDown();
+						}
+					}
+					else if (!pauseableOnly) {
+						if (logger.isTraceEnabled()) {
+							logger.trace("Stopping bean '" + beanName + "' of type [" +
+									bean.getClass().getName() + "]");
+						}
+						bean.stop();
+						if (logger.isDebugEnabled()) {
+							logger.debug("Successfully stopped bean '" + beanName + "'");
+						}
+					}
+				}
+				else if (bean instanceof SmartLifecycle) {
+					// Don't wait for beans that aren't running...
+					latch.countDown();
+				}
+			}
+			catch (Throwable ex) {
+				if (logger.isWarnEnabled()) {
+					logger.warn("Failed to stop bean '" + beanName + "'", ex);
+				}
+				if (bean instanceof SmartLifecycle) {
+					latch.countDown();
+				}
+			}
+		}
+	}
+
+--- isAutoStartupCandidate / toBeStarted: what isAutoStartup() decides ---
+	private boolean isAutoStartupCandidate(String beanName, Lifecycle bean) {
+		Set<String> stoppedBeans = this.stoppedBeans;
+		return (stoppedBeans != null ? stoppedBeans.contains(beanName) :
+				(bean instanceof SmartLifecycle smartLifecycle && smartLifecycle.isAutoStartup()));
+	}
+	private boolean toBeStarted(String beanName, Lifecycle bean) {
+		Set<String> stoppedBeans = this.stoppedBeans;
+		return (stoppedBeans != null ? stoppedBeans.contains(beanName) :
+				(!(bean instanceof SmartLifecycle smartLifecycle) || smartLifecycle.isAutoStartup()));
+	}