/*
    * 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.internal;
  
  import org.apache.logging.log4j.Level;
  import org.apache.logging.log4j.LogBuilder;
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.Marker;
  import org.apache.logging.log4j.message.Message;
  import org.apache.logging.log4j.message.SimpleMessage;
  import org.apache.logging.log4j.status.StatusLogger;
  import org.apache.logging.log4j.util.LambdaUtil;
  import org.apache.logging.log4j.util.StackLocatorUtil;
  import org.apache.logging.log4j.util.Supplier;
  
  
  /**
   * Collects data for a log event and then logs it. This class should be considered private.
   */
  public class DefaultLogBuilder implements LogBuilder {
  
      private static Message EMPTY_MESSAGE = new SimpleMessage("");
      private static final String FQCN = DefaultLogBuilder.class.getName();
      private static final Logger LOGGER = StatusLogger.getLogger();
  
      private final Logger logger;
      private Level level;
      private Marker marker;
      private Throwable throwable;
      private StackTraceElement location;
      private volatile boolean inUse;
      private long threadId;
  
      public DefaultLogBuilder(Logger logger, Level level) {
          this.logger = logger;
          this.level = level;
          this.threadId = Thread.currentThread().getId();
          this.inUse = true;
      }
  
      public DefaultLogBuilder(Logger logger) {
          this.logger = logger;
          this.inUse = false;
          this.threadId = Thread.currentThread().getId();
      }
  
      /**
       * This method should be considered internal. It is used to reset the LogBuilder for a new log message.
       * @param level The logging level for this event.
       * @return This LogBuilder instance.
       */
      public LogBuilder reset(Level level) {
          this.inUse = true;
          this.level = level;
          this.marker = null;
          this.throwable = null;
          this.location = null;
          return this;
      }
  
      @Override
      public LogBuilder withMarker(Marker marker) {
          this.marker = marker;
          return this;
      }
  
      @Override
      public LogBuilder withThrowable(Throwable throwable) {
          this.throwable = throwable;
          return this;
      }
  
      @Override
      public LogBuilder withLocation() {
          location = StackLocatorUtil.getStackTraceElement(2);
          return this;
      }
  
      @Override
      public LogBuilder withLocation(StackTraceElement location) {
          this.location = location;
          return this;
      }
  
      public boolean isInUse() {
         return inUse;
     }
 
     @Override
     public void log(Message message) {
         if (isValid()) {
             logMessage(message);
         }
     }
 
     @Override
     public void log(CharSequence message) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message));
         }
     }
 
     @Override
     public void log(String message) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message));
         }
     }
 
     @Override
     public void log(String message, Object... params) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, params));
         }
     }
 
     @Override
     public void log(String message, Supplier<?>... params) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, LambdaUtil.getAll(params)));
         }
     }
 
     @Override
     public void log(Supplier<Message> messageSupplier) {
         if (isValid()) {
             logMessage(messageSupplier.get());
         }
     }
 
     @Override
     public void log(Object message) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message));
         }
     }
 
     @Override
     public void log(String message, Object p0) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6,
             Object p7) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6, p7));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6,
             Object p7, Object p8) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6, p7, p8));
         }
     }
 
     @Override
     public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6,
             Object p7, Object p8, Object p9) {
         if (isValid()) {
             logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6, p7, p8, p9));
         }
     }
 
     @Override
     public void log() {
         if (isValid()) {
             logMessage(EMPTY_MESSAGE);
         }
     }
 
     private void logMessage(Message message) {
         try {
             logger.logMessage(level, marker, FQCN, location, message, throwable);
         } finally {
             inUse = false;
         }
     }
 
     private boolean isValid() {
         if (!inUse) {
             LOGGER.warn("Attempt to reuse LogBuilder was ignored. {}",
                     StackLocatorUtil.getCallerClass(2));
             return false ;
         }
         if (this.threadId != Thread.currentThread().getId()) {
             LOGGER.warn("LogBuilder can only be used on the owning thread. {}",
                     StackLocatorUtil.getCallerClass(2));
             return false;
         }
         return true;
     }
 }