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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_BROWSING_DATA_CONTENT_STORAGE_PARTITION_HTTP_CACHE_DATA_REMOVER_H_
#define COMPONENTS_BROWSING_DATA_CONTENT_STORAGE_PARTITION_HTTP_CACHE_DATA_REMOVER_H_
#include <stdint.h>
#include "base/callback.h"
#include "base/macros.h"
#include "base/sequenced_task_runner_helpers.h"
#include "base/time/time.h"
#include "net/base/completion_callback.h"
#include "url/gurl.h"
namespace content {
class StoragePartition;
}
namespace disk_cache {
class Backend;
}
namespace net {
class URLRequestContextGetter;
}
namespace browsing_data {
// Helper to remove http cache data from a StoragePartition.
class StoragePartitionHttpCacheDataRemover {
public:
// Creates a StoragePartitionHttpCacheDataRemover that deletes cache entries
// in the time range between |delete_begin| (inclusively) and |delete_end|
// (exclusively).
static StoragePartitionHttpCacheDataRemover* CreateForRange(
content::StoragePartition* storage_partition,
base::Time delete_begin,
base::Time delete_end);
// Similar to CreateForRange(), but only deletes URLs that are matched by
// |url_predicate|. Note that the deletion with URL filtering is not built in
// to the cache interface and might be slower.
static StoragePartitionHttpCacheDataRemover* CreateForURLsAndRange(
content::StoragePartition* storage_partition,
const base::Callback<bool(const GURL&)>& url_predicate,
base::Time delete_begin,
base::Time delete_end);
// Calls |done_callback| upon completion and also destroys itself.
void Remove(const base::Closure& done_callback);
private:
enum CacheState {
NONE,
CREATE_MAIN,
CREATE_MEDIA,
DELETE_MAIN,
DELETE_MEDIA,
DONE
};
StoragePartitionHttpCacheDataRemover(
base::Callback<bool(const GURL&)> url_predicate,
base::Time delete_begin,
base::Time delete_end,
net::URLRequestContextGetter* main_context_getter,
net::URLRequestContextGetter* media_context_getter);
// StoragePartitionHttpCacheDataRemover deletes itself (using DeleteHelper)
// and is not supposed to be deleted by other objects so make destructor
// private and DeleteHelper a friend.
friend class base::DeleteHelper<StoragePartitionHttpCacheDataRemover>;
~StoragePartitionHttpCacheDataRemover();
void ClearHttpCacheOnIOThread();
void ClearedHttpCache();
// Performs the actual work to delete or count the cache.
void DoClearCache(int rv);
base::Callback<bool(const GURL&)> url_predicate_;
const base::Time delete_begin_;
const base::Time delete_end_;
const scoped_refptr<net::URLRequestContextGetter> main_context_getter_;
const scoped_refptr<net::URLRequestContextGetter> media_context_getter_;
base::Closure done_callback_;
// IO.
int next_cache_state_;
disk_cache::Backend* cache_;
DISALLOW_COPY_AND_ASSIGN(StoragePartitionHttpCacheDataRemover);
};
} // namespace browsing_data
#endif // COMPONENTS_BROWSING_DATA_CONTENT_STORAGE_PARTITION_HTTP_CACHE_DATA_REMOVER_H_
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