BAEL-2279 - Logging reactive sequence (#5667)

* BAEL-2279 - Logging reactive sequence

* BAEL-2279 - Logging reactive sequence

* Format fix.

* Add all examples. Fix formatting.

* BAEL 2279 - rename file, formatting fixes, update deps.

logging-modules/log4j/pom.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung</groupId>
@@ -43,6 +44,12 @@
             <artifactId>disruptor</artifactId>
             <version>${disruptor.version}</version>
         </dependency>
+        <!-- Webflux for reactive logging example -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
     </dependencies>
 
     <properties>
@@ -50,6 +57,7 @@
         <log4j-api.version>2.7</log4j-api.version>
         <log4j-core.version>2.7</log4j-core.version>
         <disruptor.version>3.3.6</disruptor.version>
+        <spring-boot.version>2.1.0.RELEASE</spring-boot.version>
     </properties>
 
 </project>

logging-modules/log4j/src/main/java/com/baeldung/webFluxLogging/WebFluxLoggingExample.java

@@ -0,0 +1,21 @@
+package com.baeldung.webFluxLogging;
+
+import reactor.core.publisher.Flux;
+
+public class WebFluxLoggingExample {
+
+    public static void main(String[] args) {
+        Flux<Integer> reactiveStream = Flux.range(1, 5).log();
+
+        reactiveStream.subscribe();
+
+        reactiveStream = Flux.range(1, 5).log().take(3);
+
+        reactiveStream.subscribe();
+
+        reactiveStream = Flux.range(1, 5).take(3).log();
+
+        reactiveStream.subscribe();
+    }
+
+}