71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
// This file Copyright 2015-2022 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#pragma once
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#include <chrono>
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#include <functional>
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#include <memory>
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#include <string_view>
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extern "C"
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{
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struct event_base;
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}
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namespace libtransmission
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{
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class TimerMaker;
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class Watchdir
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{
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public:
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Watchdir() = default;
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virtual ~Watchdir() = default;
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Watchdir(Watchdir&&) = delete;
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Watchdir(Watchdir const&) = delete;
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Watchdir& operator=(Watchdir&&) = delete;
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Watchdir& operator=(Watchdir const&) = delete;
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[[nodiscard]] virtual std::string_view dirname() const noexcept = 0;
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enum class Action
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{
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Done,
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Retry
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};
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using Callback = std::function<Action(std::string_view dirname, std::string_view basename)>;
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[[nodiscard]] static auto genericRescanInterval() noexcept
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{
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return generic_rescan_interval;
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}
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static void setGenericRescanInterval(std::chrono::milliseconds interval) noexcept
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{
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generic_rescan_interval = interval;
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}
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[[nodiscard]] static std::unique_ptr<Watchdir> create(
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std::string_view dirname,
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Callback callback,
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libtransmission::TimerMaker& timer_maker,
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struct event_base* evbase);
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[[nodiscard]] static std::unique_ptr<Watchdir> createGeneric(
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std::string_view dirname,
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Callback callback,
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libtransmission::TimerMaker& timer_maker,
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std::chrono::milliseconds rescan_interval = generic_rescan_interval);
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private:
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static constexpr std::chrono::milliseconds DefaultGenericRescanInterval{ 1000 };
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static std::chrono::milliseconds generic_rescan_interval;
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};
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} // namespace libtransmission
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