downstream_cache_purger.h

Go to the documentation of this file.

/*
 * Copyright 2013 Google Inc.
 *
 * 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.
 */


#ifndef NET_INSTAWEB_REWRITER_PUBLIC_DOWNSTREAM_CACHE_PURGER_H_
#define NET_INSTAWEB_REWRITER_PUBLIC_DOWNSTREAM_CACHE_PURGER_H_

#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"

namespace net_instaweb {
class GoogleUrl;
class RewriteDriver;

class DownstreamCachePurger {
 public:
  explicit DownstreamCachePurger(RewriteDriver* driver);
  ~DownstreamCachePurger();

  bool MaybeIssuePurge(const GoogleUrl& google_url);

  void Clear();

 private:
  bool ShouldPurgeRewrittenResponse(const GoogleUrl& google_url);

  bool GeneratePurgeRequestParameters(const GoogleUrl& page_url);

  void PurgeDownstreamCache();

  RewriteDriver* driver_;
  GoogleString purge_url_;
  GoogleString purge_method_;

  bool made_downstream_purge_attempt_;

  
};

}  

#endif