MyAppender.java

package Package;

import java.time.Instant;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.Appender;
import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.appender.AbstractAppender;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginElement;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;

@Plugin(
  name = "MyAppender", 
  category = Core.CATEGORY_NAME, 
  elementType = Appender.ELEMENT_TYPE)
public class MyAppender extends AbstractAppender {
    public MyAppender(String name, Filter filter) {
        super(name, filter, null);
    }

    @PluginFactory
    public static MyAppender createAppender(
      @PluginAttribute("name") String name, 
      @PluginElement("Filter") Filter filter) {
        return new MyAppender(name, filter);
    }

    @Override
    public void append(LogEvent event) {
    }
}