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73 lines
3.3 KiB
C++
73 lines
3.3 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2025 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_CORE___DOWNLOAD_EVENT_ENGINE___H__
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#define __OPENSPACE_CORE___DOWNLOAD_EVENT_ENGINE___H__
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#include <functional>
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#include <map>
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#include <mutex>
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#include <optional>
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#include <string>
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namespace openspace {
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// @TODO (anden88 2025-10-10): This class was specifically written for the multi-threaded
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// url- and httpSynchronization events. In the future we should make this more general
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// purposed.
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class DownloadEventEngine {
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public:
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struct DownloadEvent {
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enum class Type {
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Started,
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Progress,
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Finished,
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Failed
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};
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Type type;
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std::string id;
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int64_t downloadedBytes;
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std::optional<int64_t> totalBytes;
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};
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using Callback = std::function<void(const DownloadEvent&)>;
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int subscribe(Callback cb);
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void unsubscribe(int id);
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void publish(const DownloadEvent& event);
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void publish(const std::string& id, DownloadEvent::Type type,
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int64_t downloadedBytes = 0, std::optional<int64_t> totalBytes = std::nullopt);
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private:
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std::mutex _mutex;
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int _id = 0;
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std::unordered_map<int, Callback> _subscribers;
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};
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} // namespace openspace
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#endif // __OPENSPACE_CORE___DOWNLOAD_EVENT_ENGINE___H__
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