Upgrade log4j to 2.16.0 (#112)

Author: NickBethune

pom.xml

@@ -52,6 +52,7 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <bullet.record.version>1.2.1</bullet.record.version>
         <sketches.version>0.9.1</sketches.version>
+        <log4j.version>2.17.1</log4j.version>
     </properties>
 
     <dependencies>
@@ -68,16 +69,15 @@
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>${log4j.version}</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-log4j12</artifactId>
-            <version>1.7.10</version>
-            <scope>provided</scope>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-slf4j-impl</artifactId>
+            <version>${log4j.version}</version>
         </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>

src/main/resources/log4j.properties

@@ -0,0 +1,9 @@
+status=warn
+
+appender.console.type=Console
+appender.console.name=STDOUT
+appender.console.layout.type=PatternLayout
+appender.console.layout.pattern=[%-5p] %d{ISO8601} %c - %m%n
+
+rootLogger.level=info
+rootLogger.appenderRef.stdout.ref=STDOUT

src/main/resources/log4j2.properties

@@ -0,0 +1,9 @@
+status=warn
+
+appender.console.type=Console
+appender.console.name=STDOUT
+appender.console.layout.type=PatternLayout
+appender.console.layout.pattern=[%-5p] %d{ISO8601} %c - %m%n
+
+rootLogger.level=fatal
+rootLogger.appenderRef.stdout.ref=STDOUT