feat($Slf4j): support functional lazy debug

[skip ci]

spring-cloud-starter/src/main/java/com/jmsoftware/maf/springcloudstarter/function/Slf4j.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright By ZATI
+ * Copyright By 3a3c88295d37870dfd3b25056092d1a9209824b256c341f2cdc296437f671617
+ * All rights reserved.
+ *
+ * If you are not the intended user, you are hereby notified that any use, disclosure, copying, printing, forwarding or
+ * dissemination of this property is strictly prohibited. If you have got this file in error, delete it from your
+ * system.
+ */
+package com.jmsoftware.maf.springcloudstarter.function;
+
+import org.slf4j.Logger;
+
+import java.util.function.Supplier;
+
+/**
+ * Description: Slf4j, change description here.
+ *
+ * @author 钟俊 (za-zhongjun), email: jun.zhong@zatech.com, date: 2/19/2022 9:04 AM
+ **/
+public class Slf4j {
+    private Slf4j() {
+    }
+
+    /**
+     * Lazy debug.
+     *
+     * @param logger   the logger
+     * @param supplier the string supplier
+     * @see com.jmsoftware.maf.springcloudstarter.Slf4jTests#lazyDebugTest()
+     */
+    public static void lazyDebug(Logger logger, Supplier<String> supplier) {
+        if (logger.isDebugEnabled()) {
+            logger.debug(supplier.get());
+        }
+    }
+}

spring-cloud-starter/src/test/java/com/jmsoftware/maf/springcloudstarter/Slf4jTests.java

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+/*
+ * Copyright By ZATI
+ * Copyright By 3a3c88295d37870dfd3b25056092d1a9209824b256c341f2cdc296437f671617
+ * All rights reserved.
+ *
+ * If you are not the intended user, you are hereby notified that any use, disclosure, copying, printing, forwarding or
+ * dissemination of this property is strictly prohibited. If you have got this file in error, delete it from your
+ * system.
+ */
+package com.jmsoftware.maf.springcloudstarter;
+
+import lombok.extern.slf4j.Slf4j;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static com.jmsoftware.maf.springcloudstarter.function.Slf4j.lazyDebug;
+
+/**
+ * Description: Slf4jTests, change description here.
+ *
+ * @author 钟俊 (za-zhongjun), email: jun.zhong@zatech.com, date: 2/19/2022 9:16 AM
+ **/
+@Slf4j
+class Slf4jTests {
+    @Test
+    void lazyDebugTest() {
+        Assertions.assertDoesNotThrow(() -> lazyDebug(log, () -> "Hello World! From lazyDebug test."));
+    }
+}