feat: 添加事务工具类，添加事务完成后执行回调的方法

Author: cadecode

common/plugin/datasource/src/main/java/top/cadecode/uniboot/common/plugin/datasource/util/TransactionUtil.java

@@ -0,0 +1,43 @@
+package top.cadecode.uniboot.common.plugin.datasource.util;
+
+import org.springframework.transaction.support.TransactionSynchronization;
+import org.springframework.transaction.support.TransactionSynchronizationManager;
+
+/**
+ * 事务工具类
+ *
+ * @author Cade Li
+ * @since 2023/6/13
+ */
+public class TransactionUtil {
+
+    /**
+     * 在当前事务完成后执行回调
+     *
+     * @param runnable 回调
+     */
+    public static void doAfterCompletion(Runnable runnable) {
+        // 若没有事务
+        if (!TransactionSynchronizationManager.isActualTransactionActive()) {
+            return;
+        }
+        TransactionSynchronizationManager.registerSynchronization(new DoTransactionCompletion(runnable));
+    }
+
+    public static class DoTransactionCompletion implements TransactionSynchronization {
+
+        private final Runnable runnable;
+
+        public DoTransactionCompletion(Runnable runnable) {
+            this.runnable = runnable;
+        }
+
+        @Override
+        public void afterCompletion(int status) {
+            if (status != TransactionSynchronization.STATUS_COMMITTED) {
+                return;
+            }
+            this.runnable.run();
+        }
+    }
+}