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.logback;
  
  import ch.qos.logback.classic.LoggerContext;
  import ch.qos.logback.classic.util.ContextInitializer;
  import com.alibaba.nacos.client.logging.AbstractNacosLogging;
  import com.alibaba.nacos.client.utils.StringUtils;
  import com.alibaba.nacos.common.util.ResourceUtils;
  import org.slf4j.impl.StaticLoggerBinder;
  
  /**
   * Support for Logback version 1.0.8 or higher
   *
   * @author <a href="mailto:huangxiaoyu1018@gmail.com">hxy1991</a>
   * @since 0.9.0
   */
  public class LogbackNacosLogging extends AbstractNacosLogging {
  
      private static final String NACOS_LOGBACK_LOCATION = "classpath:nacos-logback.xml";
  
      @Override
      public void loadConfiguration() {
          String location = getLocation(NACOS_LOGBACK_LOCATION);
          if (StringUtils.isBlank(location)) {
              return;
          }
  
          try {
              LoggerContext loggerContext = (LoggerContext)StaticLoggerBinder.getSingleton().getLoggerFactory();
              new ContextInitializer(loggerContext).configureByResource(ResourceUtils.getResourceURL(location));
          } catch (Exception e) {
              throw new IllegalStateException("Could not initialize Logback Nacos logging from " + location, e);
          }
      }
  
  }
  