111 lines
3.8 KiB
C++
111 lines
3.8 KiB
C++
/*
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Copyright <2018-2022> <scott.e.graves@protonmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
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associated documentation files (the "Software"), to deal in the Software without restriction,
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including without limitation the rights to use, copy, modify, merge, publish, distribute,
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sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or
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substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
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NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
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OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "drives/directory_cache.hpp"
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#include "drives/directory_iterator.hpp"
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#include "events/events.hpp"
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#include "events/event_system.hpp"
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#include "types/repertory.hpp"
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namespace repertory {
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bool directory_cache::execute_action(const std::string &api_path, const execute_callback &execute) {
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auto found = false;
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recur_mutex_lock directory_lock(directory_mutex_);
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if ((found = (directory_lookup_.find(api_path) != directory_lookup_.end()))) {
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execute(*directory_lookup_[api_path].iterator);
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}
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return found;
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}
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void directory_cache::refresh_thread() {
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while (not is_shutdown_) {
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unique_recur_mutex_lock directory_lock(directory_mutex_);
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auto lookup = directory_lookup_;
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directory_lock.unlock();
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for (const auto &kv : lookup) {
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if (std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now() -
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kv.second.last_update) >= 120s) {
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directory_lock.lock();
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directory_lookup_.erase(kv.first);
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directory_lock.unlock();
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}
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}
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if (not is_shutdown_) {
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unique_mutex_lock shutdown_lock(shutdown_mutex_);
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if (not is_shutdown_) {
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shutdown_notify_.wait_for(shutdown_lock, 15s);
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}
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}
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}
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}
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directory_iterator *directory_cache::remove_directory(const std::string &api_path) {
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directory_iterator *ret = nullptr;
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recur_mutex_lock directory_lock(directory_mutex_);
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if (directory_lookup_.find(api_path) != directory_lookup_.end()) {
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ret = directory_lookup_[api_path].iterator;
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directory_lookup_.erase(api_path);
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}
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return ret;
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}
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void directory_cache::remove_directory(directory_iterator *iterator) {
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if (iterator) {
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recur_mutex_lock directory_lock(directory_mutex_);
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const auto it = std::find_if(
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directory_lookup_.begin(), directory_lookup_.end(),
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[&iterator](const auto &kv) -> bool { return kv.second.iterator == iterator; });
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if (it != directory_lookup_.end()) {
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directory_lookup_.erase(it->first);
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}
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}
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}
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void directory_cache::set_directory(const std::string &api_path, directory_iterator *iterator) {
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recur_mutex_lock directory_lock(directory_mutex_);
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directory_lookup_[api_path] = {iterator};
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}
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void directory_cache::start() {
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unique_mutex_lock shutdown_lock(shutdown_mutex_);
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if (is_shutdown_) {
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is_shutdown_ = false;
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refresh_thread_ = std::make_unique<std::thread>([this]() { this->refresh_thread(); });
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}
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}
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void directory_cache::stop() {
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unique_mutex_lock shutdown_lock(shutdown_mutex_);
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if (not is_shutdown_) {
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event_system::instance().raise<service_shutdown>("directory_cache");
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is_shutdown_ = true;
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shutdown_notify_.notify_all();
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shutdown_lock.unlock();
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refresh_thread_->join();
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refresh_thread_.reset();
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}
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}
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} // namespace repertory
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