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.csp.sentinel.eagleeye;
  
  /**
   * @author jifeng
   */
  final class SyncAppender extends EagleEyeAppender {
  
      private final EagleEyeAppender delegate;
      private final Object lock = new Object();
  
      public SyncAppender(EagleEyeAppender delegate) {
          this.delegate = delegate;
      }
  
      @Override
      public void append(String log) {
          synchronized (lock) {
              delegate.append(log);
          }
      }
  
      @Override
      public void flush() {
          synchronized (lock) {
              delegate.flush();
          }
      }
  
      @Override
      public void rollOver() {
          synchronized (lock) {
              delegate.rollOver();
          }
      }
  
      @Override
      public void reload() {
          synchronized (lock) {
              delegate.reload();
          }
      }
  
      @Override
      public void close() {
          synchronized (lock) {
              delegate.close();
          }
      }
  
      @Override
      public void cleanup() {
          delegate.cleanup();
      }
  
      @Override
      public String getOutputLocation() {
          return delegate.getOutputLocation();
      }
  
      @Override
      public String toString() {
          return "SyncAppender [appender=" + delegate + "]";
      }
  }
  