content: package org.apache.archiva.policies.urlcache;
  
  /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  
  /**
   * Cache for requested URLs that cannot be fetched. 
   *
   *
   */
  public interface UrlFailureCache
  {
      /**
       * Store a URL in the cache as failed.
       * 
       * @param url the url to store. 
       */
      void cacheFailure( String url );
      
      /**
       * Test if a specified URL has failed before.
       * 
       * NOTE: If the provided URL has failed, then making this call 
       * should refresh the expiration time on that URL entry.
       * 
       * @param url the URL to test.
       * @return true if it has failed before, false if not.
       */
      boolean hasFailedBefore( String url );
  }
  