feat($Java): embrace Java functional interface and Lambda

Add more functions to simplify boilerplate code
 - Cache
 - ExceptionHandling
 - ExceptionReturnDefault
 - FunctionLog
 - Retry

BREAKING CHANGE: Add more functions to simplify boilerplate code; give Java function superpower 🔥

[skip ci]

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/BooleanCheckUtil.java → spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/BooleanCheck.java

@@ -8,11 +8,11 @@
 import static java.util.Objects.nonNull;
 
 /**
- * Description: BooleanCheckUtil, change description here.
+ * Description: BooleanCheck, change description here.
  *
  * @author Johnny Miller (锺俊), email: johnnysviva@outlook.com, date: 9/27/2021 12:03 PM
  **/
-public class BooleanCheckUtil {
+public class BooleanCheck {
     /**
      * Require true or else throw exception.
      *

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/Cache.java

@@ -0,0 +1,24 @@
+package com.jmsoftware.maf.springcloudstarter.function;
+
+import java.util.Map;
+import java.util.function.Function;
+
+/**
+ * <h1>Cache</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:51 AM
+ * @see <a href='https://juejin.cn/post/6892298625058078727#heading-2'>Java 函数式编程最佳实践 - 赋予函数缓存能力</a>
+ **/
+public class Cache {
+    public static <T, R> R cacheFunction(Function<T, R> function, T t, Map<T, R> cache) {
+        R r = cache.get(t);
+        if (r != null) {
+            return r;
+        }
+        R result = function.apply(t);
+        cache.put(t, result);
+        return result;
+    }
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/ExceptionHandling.java

@@ -0,0 +1,44 @@
+package com.jmsoftware.maf.springcloudstarter.function;
+
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionBiFunction;
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionFunction;
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionSupplier;
+
+import java.util.function.Function;
+
+/**
+ * <h1>ExceptionHandling</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:54 AM
+ * @see <a href='https://juejin.cn/post/6892298625058078727#heading-4'>Java 函数式编程最佳实践 - 赋予函数处理异常的能力</a>
+ **/
+public class ExceptionHandling {
+    public static <T, R> R computeAndDealException(ThrowExceptionFunction<T, R> function, T t,
+                                                   Function<Exception, R> handlingFunc) {
+        try {
+            return function.apply(t);
+        } catch (Exception e) {
+            return handlingFunc.apply(e);
+        }
+    }
+
+    public static <T, U, R> R computeAndDealException(ThrowExceptionBiFunction<T, U, R> function, T t, U u,
+                                                      Function<Exception, R> handlingFunc) {
+        try {
+            return function.apply(t, u);
+        } catch (Exception e) {
+            return handlingFunc.apply(e);
+        }
+    }
+
+    public static <R> R computeAndDealException(ThrowExceptionSupplier<R> supplier,
+                                                Function<Exception, R> handlingFunc) {
+        try {
+            return supplier.get();
+        } catch (Exception e) {
+            return handlingFunc.apply(e);
+        }
+    }
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/ExceptionReturnDefault.java

@@ -0,0 +1,30 @@
+package com.jmsoftware.maf.springcloudstarter.function;
+
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionFunction;
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionSupplier;
+
+/**
+ * <h1>ExceptionReturnDefault</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:52 AM
+ * @see <a href='https://juejin.cn/post/6892298625058078727#heading-3'>Java 函数式编程最佳实践 - 赋予函数报错返回默认值能力</a>
+ **/
+public class ExceptionReturnDefault {
+    public static <T, R> R computeOrGetDefault(ThrowExceptionFunction<T, R> function, T t, R r) {
+        try {
+            return function.apply(t);
+        } catch (Exception e) {
+            return r;
+        }
+    }
+
+    public static <R> R computeOrGetDefault(ThrowExceptionSupplier<R> supplier, R r) {
+        try {
+            return supplier.get();
+        } catch (Exception e) {
+            return r;
+        }
+    }
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/FunctionLog.java

@@ -0,0 +1,30 @@
+package com.jmsoftware.maf.springcloudstarter.function;
+
+import lombok.extern.slf4j.Slf4j;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.function.Function;
+
+import static com.jmsoftware.maf.common.constant.UniversalDateTime.DATE_TIME_FORMAT;
+
+/**
+ * <h1>FunctionLog</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:57 AM
+ * @see <a href='https://juejin.cn/post/6892298625058078727#heading-5'>Java 函数式编程最佳实践 - 赋予函数记录日志能力</a>
+ **/
+@Slf4j
+public class FunctionLog {
+    public static <T, R> R logFunction(Function<T, R> function, T t, String tag) {
+        long startTime = System.currentTimeMillis();
+        log.info("[{}], parameter = {}, requestTime = {}", tag, t.toString(),
+                 LocalDateTime.now().format(DateTimeFormatter.ofPattern(DATE_TIME_FORMAT)));
+        R apply = function.apply(t);
+        long endTime = System.currentTimeMillis();
+        log.info("[{}], return = {}, elapsed time = {} ms", tag, apply.toString(), endTime - startTime);
+        return apply;
+    }
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/Retry.java

@@ -0,0 +1,55 @@
+package com.jmsoftware.maf.springcloudstarter.function;
+
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionBiFunction;
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionFunction;
+import com.jmsoftware.maf.springcloudstarter.function.functionalinterface.ThrowExceptionRunnable;
+
+/**
+ * <h1>Retry</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:27 AM
+ * @see <a href='https://juejin.cn/post/6892298625058078727#heading-1'>Java 函数式编程最佳实践 - 赋予方法重试能力</a>
+ */
+public class Retry {
+    public static void retryFunction(ThrowExceptionRunnable runnable, int time) {
+        while (true) {
+            try {
+                runnable.run();
+                return;
+            } catch (Exception e) {
+                time--;
+                if (time <= 0) {
+                    throw new RuntimeException(e);
+                }
+            }
+        }
+    }
+
+    public static <T, R> R retryFunction(ThrowExceptionFunction<T, R> function, T t, int time) {
+        while (true) {
+            try {
+                return function.apply(t);
+            } catch (Exception e) {
+                time--;
+                if (time <= 0) {
+                    throw new RuntimeException(e);
+                }
+            }
+        }
+    }
+
+    public static <T, U, R> R retryFunction(ThrowExceptionBiFunction<T, U, R> function, T t, U u, int time) {
+        while (true) {
+            try {
+                return function.apply(t, u);
+            } catch (Exception e) {
+                time--;
+                if (time <= 0) {
+                    throw new RuntimeException(e);
+                }
+            }
+        }
+    }
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/functionalinterface/ThrowExceptionBiFunction.java

@@ -0,0 +1,21 @@
+package com.jmsoftware.maf.springcloudstarter.function.functionalinterface;
+
+/**
+ * <h1>ThrowExceptionBiFunction</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:48 AM
+ **/
+@FunctionalInterface
+public interface ThrowExceptionBiFunction<T, U, R> {
+    /**
+     * Apply r.
+     *
+     * @param t the t
+     * @param u the u
+     * @return the r
+     * @throws Exception the exception
+     */
+    R apply(T t, U u) throws Exception;
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/functionalinterface/ThrowExceptionFunction.java

@@ -0,0 +1,20 @@
+package com.jmsoftware.maf.springcloudstarter.function.functionalinterface;
+
+/**
+ * <h1>ThrowExceptionFunction</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:47 AM
+ **/
+@FunctionalInterface
+public interface ThrowExceptionFunction<T, R> {
+    /**
+     * Apply r.
+     *
+     * @param t the t
+     * @return the r
+     * @throws Exception the exception
+     */
+    R apply(T t) throws Exception;
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/functionalinterface/ThrowExceptionRunnable.java

@@ -0,0 +1,18 @@
+package com.jmsoftware.maf.springcloudstarter.function.functionalinterface;
+
+/**
+ * <h1>ThrowExceptionRunnable</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:49 AM
+ **/
+@FunctionalInterface
+public interface ThrowExceptionRunnable {
+    /**
+     * Run.
+     *
+     * @throws Exception the exception
+     */
+    void run() throws Exception;
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/functionalinterface/ThrowExceptionSupplier.java

@@ -0,0 +1,19 @@
+package com.jmsoftware.maf.springcloudstarter.function.functionalinterface;
+
+/**
+ * <h1>ThrowExceptionSupplier</h1>
+ * <p>
+ * Change description here.
+ *
+ * @author Johnny Miller (鍾俊), email: johnnysviva@outlook.com, 9/28/21 8:49 AM
+ **/
+@FunctionalInterface
+public interface ThrowExceptionSupplier<T> {
+    /**
+     * Get t.
+     *
+     * @return the t
+     * @throws Exception the exception
+     */
+    T get() throws Exception;
+}

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/quartz/service/impl/QuartzJobConfigurationServiceImpl.java

@@ -30,7 +30,7 @@
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import static com.jmsoftware.maf.springcloudstarter.function.BooleanCheckUtil.requireTrue;
+import static com.jmsoftware.maf.springcloudstarter.function.BooleanCheck.requireTrue;
 
 /**
  * Description: QuartzJobConfigurationServiceImpl