content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.nacos.client.logging;
  
  import com.alibaba.nacos.client.utils.StringUtils;
  import org.apache.commons.lang3.BooleanUtils;
  
  /**
   * @author <a href="mailto:huangxiaoyu1018@gmail.com">hxy1991</a>
   * @since 0.9.0
   */
  public abstract class AbstractNacosLogging {
  
      private static final String NACOS_LOGGING_CONFIG_PROPERTY = "nacos.logging.config";
  
      private static final String NACOS_LOGGING_DEFAULT_CONFIG_ENABLED_PROPERTY = "nacos.logging.default.config.enabled";
  
      private static final String NACOS_LOGGING_PATH_PROPERTY = "nacos.logging.path";
  
      static {
          String loggingPath = System.getProperty(NACOS_LOGGING_PATH_PROPERTY);
          if (StringUtils.isBlank(loggingPath)) {
              String userHome = System.getProperty("user.home");
              System.setProperty(NACOS_LOGGING_PATH_PROPERTY, userHome + "/logs/nacos");
          }
      }
  
      protected String getLocation(String defaultLocation) {
          String location = System.getProperty(NACOS_LOGGING_CONFIG_PROPERTY);
          if (StringUtils.isBlank(location)) {
              if (isDefaultConfigEnabled()) {
                  return defaultLocation;
              }
              return null;
          }
          return location;
      }
  
      private boolean isDefaultConfigEnabled() {
          String property = System.getProperty(NACOS_LOGGING_DEFAULT_CONFIG_ENABLED_PROPERTY);
          // The default value is true.
          return property == null || BooleanUtils.toBoolean(property);
      }
  
      /**
       * Load logging configuration
       */
      public abstract void loadConfiguration();
  }
  