content: /*
   * Copyright 1999-2019 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
   *
   *      https://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.adapter.gateway.zuul.api.route;
  
  import com.alibaba.csp.sentinel.util.AssertUtil;
  import com.alibaba.csp.sentinel.util.function.Predicate;
  import com.netflix.zuul.context.RequestContext;
  
  import javax.servlet.http.HttpServletRequest;
  import java.util.regex.Pattern;
  
  /**
   * @author Eric Zhao
   * @since 1.6.0
   */
  public class RegexRoutePathMatcher implements Predicate<RequestContext> {
  
      private final String pattern;
      private final Pattern regex;
  
      public RegexRoutePathMatcher(String pattern) {
          AssertUtil.assertNotBlank(pattern, "pattern cannot be blank");
          this.pattern = pattern;
          this.regex = Pattern.compile(pattern);
      }
  
      @Override
      public boolean test(RequestContext context) {
          //Solve the problem of route matching
          HttpServletRequest request = context.getRequest();
          String path = request.getRequestURI();
          if (path == null) {
              AssertUtil.assertNotBlank(pattern, "requesturi cannot be blank");
          }
          return regex.matcher(path).matches();
      }
  
      public String getPattern() {
          return pattern;
      }
  }