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include/upload/upload_manager.hpp

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+/*
+  Copyright <2018-2022> <scott.e.graves@protonmail.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+  associated documentation files (the "Software"), to deal in the Software without restriction,
+  including without limitation the rights to use, copy, modify, merge, publish, distribute,
+  sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all copies or
+  substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+  NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
+  OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+#ifndef INCLUDE_UPLOAD_UPLOAD_MANAGER_HPP_
+#define INCLUDE_UPLOAD_UPLOAD_MANAGER_HPP_
+
+#include "common.hpp"
+#include "types/repertory.hpp"
+
+namespace repertory {
+class app_config;
+class upload_manager final {
+public:
+  struct upload {
+    std::string api_path;
+    bool cancel = false;
+    std::string encryption_token;
+    std::string source_path;
+    std::unique_ptr<std::thread> thread;
+    bool completed = true;
+    bool retry = false;
+
+    void wait() {
+      while (not completed) {
+        std::this_thread::sleep_for(1ms);
+      }
+    }
+  };
+
+  typedef std::function<bool(const std::string &api_path)> api_file_exists_callback;
+  typedef std::function<host_config(const bool &upload)> get_host_config_callback;
+  typedef std::function<void(const std::string &api_path, const std::string &source_path,
+                             const json &data)>
+      upload_completed_callback;
+  typedef std::function<api_error(const upload &upload, json &data, json &error)>
+      upload_handler_callback;
+
+public:
+  upload_manager(const app_config &config, api_file_exists_callback api_file_exists,
+                 upload_handler_callback upload_handler,
+                 upload_completed_callback upload_completed);
+
+  ~upload_manager();
+
+private:
+  const app_config &config_;
+  const api_file_exists_callback api_file_exists_;
+  upload_handler_callback upload_handler_;
+  const upload_completed_callback upload_completed_;
+  std::unique_ptr<rocksdb::DB> upload_db_;
+  std::unordered_map<std::string, std::shared_ptr<upload>> upload_lookup_;
+  std::deque<upload *> upload_queue_;
+  std::deque<upload *> active_uploads_;
+  const std::string ROCKS_DB_NAME = "upload_db";
+  bool stop_requested_ = false;
+  mutable std::mutex upload_mutex_;
+  std::condition_variable upload_notify_;
+  std::unique_ptr<std::thread> upload_thread_;
+
+private:
+  void upload_thread();
+
+public:
+  bool execute_if_not_processing(const std::vector<std::string> &api_paths,
+                                 const std::function<void()> &action) const;
+
+  std::size_t get_count() const { return upload_lookup_.size(); }
+
+  bool is_processing(const std::string &api_path) const;
+
+  api_error queue_upload(const std::string &api_path, const std::string &source_path,
+                         const std::string &encryption_token);
+
+  api_error remove_upload(const std::string &api_path);
+
+  void start();
+
+  void stop();
+};
+} // namespace repertory
+
+#endif // INCLUDE_UPLOAD_UPLOAD_MANAGER_HPP_