| // 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 CHROME_BROWSER_ANDROID_HISTORY_REPORT_DELTA_FILE_SERVICE_H_ |
| #define CHROME_BROWSER_ANDROID_HISTORY_REPORT_DELTA_FILE_SERVICE_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/threading/sequenced_worker_pool.h" |
| |
| class GURL; |
| |
| namespace base { |
| class FilePath; |
| } // namespace base |
| |
| namespace history_report { |
| |
| class DeltaFileEntryWithData; |
| class DeltaFileBackend; |
| |
| // Delta file for gmscore integration and history reporting. |
| class DeltaFileService { |
| public: |
| explicit DeltaFileService(const base::FilePath& dir); |
| ~DeltaFileService(); |
| |
| // Adds new addtion entry to delta file. |
| virtual void PageAdded(const GURL& url); |
| // Adds new deletion entry to delta file. |
| void PageDeleted(const GURL& url); |
| // Removes all delta file entries with seqno <= lower_bound. |
| // Returns max seqno in delta file. |
| int64_t Trim(int64_t lower_bound); |
| // Removes all data from delta file and populates it with new addition |
| // entries for given urls. |
| bool Recreate(const std::vector<std::string>& urls); |
| // Provides up to limit delta file entries with seqno > last_seq_no. |
| std::unique_ptr<std::vector<DeltaFileEntryWithData>> Query( |
| int64_t last_seq_no, |
| int32_t limit); |
| // Removes all entries from delta file. |
| void Clear(); |
| |
| // Dumps internal state to string. |
| std::string Dump(); |
| |
| private: |
| scoped_refptr<base::SequencedTaskRunner> task_runner_; |
| std::unique_ptr<DeltaFileBackend> delta_file_backend_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeltaFileService); |
| }; |
| |
| } // namespace history_report |
| |
| #endif // CHROME_BROWSER_ANDROID_HISTORY_REPORT_DELTA_FILE_SERVICE_H_ |