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.context;
  
  import com.alibaba.csp.sentinel.Constants;
  
  /**
   * If total {@link Context} exceed {@link Constants#MAX_CONTEXT_NAME_SIZE}, a
   * {@link NullContext} will get when invoke {@link ContextUtil}.enter(), means
   * no rules checking will do.
   *
   * @author qinan.qn
   */
  public class NullContext extends Context {
  
      public NullContext() {
          super(null, "null_context_internal");
      }
  }
  