/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements. See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache license, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License. You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the license for the specific language governing permissions and
   * limitations under the license.
   */
  package org.apache.logging.log4j.core.async;
  
  import java.util.Map;
  
  import org.apache.logging.log4j.Level;
  import org.apache.logging.log4j.Marker;
  import org.apache.logging.log4j.ThreadContext.ContextStack;
  import org.apache.logging.log4j.message.Message;
  
  import com.lmax.disruptor.EventTranslator;
  
  /**
   * This class is responsible for writing elements that make up a log event into
   * the ringbuffer {@code RingBufferLogEvent}. After this translator populated
   * the ringbuffer event, the disruptor will update the sequence number so that
   * the event can be consumed by another thread.
   */
  public class RingBufferLogEventTranslator implements
          EventTranslator<RingBufferLogEvent> {
  
      private AsyncLogger asyncLogger;
      private String loggerName;
      protected Marker marker;
      protected String fqcn;
      protected Level level;
      protected Message message;
      protected Throwable thrown;
      private Map<String, String> contextMap;
      private ContextStack contextStack;
      private long threadId = Thread.currentThread().getId();
      private String threadName = Thread.currentThread().getName();
      private int threadPriority = Thread.currentThread().getPriority();
      private StackTraceElement location;
      private long currentTimeMillis;
      private long nanoTime;
  
      // @Override
      @Override
      public void translateTo(final RingBufferLogEvent event, final long sequence) {
          event.setValues(asyncLogger, loggerName, marker, fqcn, level, message, thrown, contextMap, contextStack,
                  threadId, threadName, threadPriority, location, currentTimeMillis, nanoTime);
          clear();
      }
  
      /**
       * Release references held by this object to allow objects to be garbage-collected.
       */
      private void clear() {
          setBasicValues(null, // asyncLogger
                  null, // loggerName
                  null, // marker
                  null, // fqcn
                  null, // level
                  null, // data
                  null, // t
                  null, // map
                  null, // contextStack
                  null, // location
                  0, // currentTimeMillis
                  0 // nanoTime
          );
      }
  
      public void setBasicValues(final AsyncLogger anAsyncLogger, final String aLoggerName, final Marker aMarker,
              final String theFqcn, final Level aLevel, final Message msg, final Throwable aThrowable,
              final Map<String, String> aMap, final ContextStack aContextStack, final StackTraceElement aLocation,
              final long aCurrentTimeMillis, final long aNanoTime) {
          this.asyncLogger = anAsyncLogger;
          this.loggerName = aLoggerName;
          this.marker = aMarker;
          this.fqcn = theFqcn;
          this.level = aLevel;
          this.message = msg;
          this.thrown = aThrowable;
          this.contextMap = aMap;
          this.contextStack = aContextStack;
          this.location = aLocation;
          this.currentTimeMillis = aCurrentTimeMillis;
          this.nanoTime = aNanoTime;
      }
  
      public void updateThreadValues() {
          final Thread currentThread = Thread.currentThread();
         this.threadId = currentThread.getId();
         this.threadName = currentThread.getName();
         this.threadPriority = currentThread.getPriority();
     }
 }