/*
    * Copyright 2017 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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 io.netty.util.internal.logging;
  
  import org.slf4j.spi.LocationAwareLogger;
  
  import static org.slf4j.spi.LocationAwareLogger.*;
  
  /**
   * <a href="https://www.slf4j.org/">SLF4J</a> logger which is location aware and so will log the correct origin of the
   * logging event by filter out the wrapper itself.
   */
  final class LocationAwareSlf4JLogger extends AbstractInternalLogger {
  
      // IMPORTANT: All our log methods first check if the log level is enabled before call the wrapped
      // LocationAwareLogger.log(...) method. This is done to reduce GC creation that is caused by varargs.
  
      static final String FQCN = LocationAwareSlf4JLogger.class.getName();
      private static final long serialVersionUID = -8292030083201538180L;
  
      private final transient LocationAwareLogger logger;
  
      LocationAwareSlf4JLogger(LocationAwareLogger logger) {
          super(logger.getName());
          this.logger = logger;
      }
  
      private void log(final int level, final String message) {
          logger.log(null, FQCN, level, message, null, null);
      }
  
      private void log(final int level, final String message, Throwable cause) {
          logger.log(null, FQCN, level, message, null, cause);
      }
  
      private void log(final int level, final org.slf4j.helpers.FormattingTuple tuple) {
          logger.log(null, FQCN, level, tuple.getMessage(), null, tuple.getThrowable());
      }
  
      @Override
      public boolean isTraceEnabled() {
          return logger.isTraceEnabled();
      }
  
      @Override
      public void trace(String msg) {
          if (isTraceEnabled()) {
              log(TRACE_INT, msg);
          }
      }
  
      @Override
      public void trace(String format, Object arg) {
          if (isTraceEnabled()) {
              log(TRACE_INT, org.slf4j.helpers.MessageFormatter.format(format, arg));
          }
      }
  
      @Override
      public void trace(String format, Object argA, Object argB) {
          if (isTraceEnabled()) {
              log(TRACE_INT, org.slf4j.helpers.MessageFormatter.format(format, argA, argB));
          }
      }
  
      @Override
      public void trace(String format, Object... argArray) {
          if (isTraceEnabled()) {
              log(TRACE_INT, org.slf4j.helpers.MessageFormatter.arrayFormat(format, argArray));
          }
      }
  
      @Override
      public void trace(String msg, Throwable t) {
          if (isTraceEnabled()) {
              log(TRACE_INT, msg, t);
          }
      }
  
      @Override
      public boolean isDebugEnabled() {
          return logger.isDebugEnabled();
      }
  
      @Override
      public void debug(String msg) {
         if (isDebugEnabled()) {
             log(DEBUG_INT, msg);
         }
     }
 
     @Override
     public void debug(String format, Object arg) {
         if (isDebugEnabled()) {
             log(DEBUG_INT, org.slf4j.helpers.MessageFormatter.format(format, arg));
         }
     }
 
     @Override
     public void debug(String format, Object argA, Object argB) {
         if (isDebugEnabled()) {
             log(DEBUG_INT, org.slf4j.helpers.MessageFormatter.format(format, argA, argB));
         }
     }
 
     @Override
     public void debug(String format, Object... argArray) {
         if (isDebugEnabled()) {
             log(DEBUG_INT, org.slf4j.helpers.MessageFormatter.arrayFormat(format, argArray));
         }
     }
 
     @Override
     public void debug(String msg, Throwable t) {
         if (isDebugEnabled()) {
             log(DEBUG_INT, msg, t);
         }
     }
 
     @Override
     public boolean isInfoEnabled() {
         return logger.isInfoEnabled();
     }
 
     @Override
     public void info(String msg) {
         if (isInfoEnabled()) {
             log(INFO_INT, msg);
         }
     }
 
     @Override
     public void info(String format, Object arg) {
         if (isInfoEnabled()) {
             log(INFO_INT, org.slf4j.helpers.MessageFormatter.format(format, arg));
         }
     }
 
     @Override
     public void info(String format, Object argA, Object argB) {
         if (isInfoEnabled()) {
             log(INFO_INT, org.slf4j.helpers.MessageFormatter.format(format, argA, argB));
         }
     }
 
     @Override
     public void info(String format, Object... argArray) {
         if (isInfoEnabled()) {
             log(INFO_INT, org.slf4j.helpers.MessageFormatter.arrayFormat(format, argArray));
         }
     }
 
     @Override
     public void info(String msg, Throwable t) {
         if (isInfoEnabled()) {
             log(INFO_INT, msg, t);
         }
     }
 
     @Override
     public boolean isWarnEnabled() {
         return logger.isWarnEnabled();
     }
 
     @Override
     public void warn(String msg) {
         if (isWarnEnabled()) {
             log(WARN_INT, msg);
         }
     }
 
     @Override
     public void warn(String format, Object arg) {
         if (isWarnEnabled()) {
             log(WARN_INT, org.slf4j.helpers.MessageFormatter.format(format, arg));
         }
     }
 
     @Override
     public void warn(String format, Object... argArray) {
         if (isWarnEnabled()) {
             log(WARN_INT, org.slf4j.helpers.MessageFormatter.arrayFormat(format, argArray));
         }
     }
 
     @Override
     public void warn(String format, Object argA, Object argB) {
         if (isWarnEnabled()) {
             log(WARN_INT, org.slf4j.helpers.MessageFormatter.format(format, argA, argB));
         }
     }
 
     @Override
     public void warn(String msg, Throwable t) {
         if (isWarnEnabled()) {
             log(WARN_INT, msg, t);
         }
     }
 
     @Override
     public boolean isErrorEnabled() {
         return logger.isErrorEnabled();
     }
 
     @Override
     public void error(String msg) {
         if (isErrorEnabled()) {
             log(ERROR_INT, msg);
         }
     }
 
     @Override
     public void error(String format, Object arg) {
         if (isErrorEnabled()) {
             log(ERROR_INT, org.slf4j.helpers.MessageFormatter.format(format, arg));
         }
     }
 
     @Override
     public void error(String format, Object argA, Object argB) {
         if (isErrorEnabled()) {
             log(ERROR_INT, org.slf4j.helpers.MessageFormatter.format(format, argA, argB));
         }
     }
 
     @Override
     public void error(String format, Object... argArray) {
         if (isErrorEnabled()) {
             log(ERROR_INT, org.slf4j.helpers.MessageFormatter.arrayFormat(format, argArray));
         }
     }
 
     @Override
     public void error(String msg, Throwable t) {
         if (isErrorEnabled()) {
             log(ERROR_INT, msg, t);
         }
     }
 }