move graylog ex

spring-boot-logging-log4j2/README.md

@@ -1,2 +1,4 @@
 ### Relevant Articles: 
 - [Logging in Spring Boot](http://www.baeldung.com/spring-boot-logging)
+- [Logging to Graylog with Spring Boot](https://www.baeldung.com/graylog-with-spring-boot)
+

spring-boot-logging-log4j2/pom.xml

@@ -34,6 +34,20 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-log4j2</artifactId>
         </dependency>
+        
+        <!-- for Graylog demo -->
+        <dependency>
+            <!-- forcing spring boot 1.x sing log4j was dropped in spring boot 1.4 and beyond -->
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-log4j</artifactId>
+            <version>1.3.8.RELEASE</version>
+        </dependency>
+        <dependency>
+            <groupId>org.graylog2</groupId>
+            <artifactId>gelfj</artifactId>
+            <version>1.1.16</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
     
     <build>
@@ -56,6 +70,6 @@
     </build>
     
     <properties>
-    
+        <start-class>com.baeldung.springbootlogging.SpringBootLoggingApplication</start-class>
     </properties>
 </project>

spring-boot-logging-log4j2/src/main/java/com/baeldung/graylog/GraylogDemoApplication.java

@@ -0,0 +1,17 @@
+package com.baeldung.graylog;
+
+import org.apache.log4j.Logger;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GraylogDemoApplication {
+
+    private final static Logger LOG =
+            Logger.getLogger(GraylogDemoApplication.class);
+
+    public static void main(String[] args) {
+        SpringApplication.run(GraylogDemoApplication.class, args);
+        LOG.info("Hello from Spring Boot");
+    }
+}

spring-boot-logging-log4j2/src/main/resources/log4j.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE log4j:configuration SYSTEM "http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd">
+<log4j:configuration>
+    <appender name="stdout" class="org.apache.log4j.ConsoleAppender">
+        <layout class="org.apache.log4j.PatternLayout">
+            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${PID:- } [%t] --- %-40.40logger{39} : %m%n"/>
+        </layout>
+    </appender>
+    <appender name="graylog" class="org.graylog2.log.GelfAppender">
+        <param name="graylogHost" value="18.217.253.212"/>
+        <param name="originHost" value="localhost"/>
+        <param name="graylogPort" value="12201"/>
+        <param name="extractStacktrace" value="true"/>
+        <param name="addExtendedInformation" value="true"/>
+        <param name="facility" value="log4j"/>
+        <param name="Threshold" value="DEBUG"/>
+        <param name="additionalFields" value="{'environment': 'DEV', 'application': 'GraylogDemoApplication'}"/>
+    </appender>
+    <root>
+        <priority value="DEBUG"/>
+        <appender-ref ref="stdout"/>
+        <appender-ref ref="graylog"/>
+    </root>
+</log4j:configuration>