| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SERVICES_NETWORK_CONDITIONAL_CACHE_DELETION_HELPER_H_ |
| #define SERVICES_NETWORK_CONDITIONAL_CACHE_DELETION_HELPER_H_ |
| |
| #include <memory> |
| |
| #include "base/callback_forward.h" |
| #include "base/memory/raw_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/task/sequenced_task_runner_helpers.h" |
| #include "net/base/net_errors.h" |
| #include "net/disk_cache/disk_cache.h" |
| #include "url/gurl.h" |
| |
| namespace disk_cache { |
| class Entry; |
| } |
| |
| namespace network { |
| |
| // Helper to remove HTTP cache data. |
| class ConditionalCacheDeletionHelper { |
| public: |
| // Creates a helper to delete |cache| entries whose last modified time is |
| // between |begin_time| (inclusively), |end_time| (exclusively) and whose URL |
| // is matched by the |url_matcher|. Note that |begin_time| and |end_time| can |
| // be null to indicate unbounded time interval in their respective direction. |
| // Starts the deletion and calls |completion_callback| when done. |
| static std::unique_ptr<ConditionalCacheDeletionHelper> CreateAndStart( |
| disk_cache::Backend* cache, |
| const base::RepeatingCallback<bool(const GURL&)>& url_matcher, |
| const base::Time& begin_time, |
| const base::Time& end_time, |
| base::OnceClosure completion_callback); |
| |
| ConditionalCacheDeletionHelper(const ConditionalCacheDeletionHelper&) = |
| delete; |
| ConditionalCacheDeletionHelper& operator=( |
| const ConditionalCacheDeletionHelper&) = delete; |
| |
| ~ConditionalCacheDeletionHelper(); |
| |
| private: |
| ConditionalCacheDeletionHelper( |
| const base::RepeatingCallback<bool(const disk_cache::Entry*)>& condition, |
| base::OnceClosure completion_callback, |
| std::unique_ptr<disk_cache::Backend::Iterator> iterator); |
| |
| void IterateOverEntries(disk_cache::EntryResult result); |
| |
| void NotifyCompletion(); |
| |
| const base::RepeatingCallback<bool(const disk_cache::Entry*)> condition_; |
| |
| base::OnceClosure completion_callback_; |
| |
| std::unique_ptr<disk_cache::Backend::Iterator> iterator_; |
| raw_ptr<disk_cache::Entry, DanglingUntriaged> previous_entry_ = nullptr; |
| |
| base::WeakPtrFactory<ConditionalCacheDeletionHelper> weak_factory_{this}; |
| }; |
| |
| } // namespace network |
| |
| #endif // SERVICES_NETWORK_CONDITIONAL_CACHE_DELETION_HELPER_H_ |