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/*
 * Copyright (C) 2013 Square, Inc.
 *
 * Licensed 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 com.squareup.rack;

import org.slf4j.Logger;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Adapts a {@link Logger} to the required interface for {@code rack.logger}.
 */
public class RackLogger {
  public static final Marker FATAL = MarkerFactory.getMarker("FATAL");

  private final Logger logger;

  /**
   * Creates a {@link RackLogger} that forwards messages to the given {@link Logger}.
   *
   * @param logger
   */
  public RackLogger(Logger logger) {
    this.logger = checkNotNull(logger);
  }

  public void info(String message) {
    logger.info(message);
  }

  public void debug(String message) {
    logger.debug(message);
  }

  public void warn(String message) {
    logger.warn(message);
  }

  public void error(String message) {
    logger.error(message);
  }

  public void fatal(String message) {
    // See http://www.slf4j.org/faq.html#fatal
    logger.error(FATAL, message);
  }
}