2018-10-31 21:48:12 +03:00
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/*
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2019-06-20 02:58:25 +03:00
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* Copyright (c) Facebook, Inc. and its affiliates.
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2018-10-31 21:48:12 +03:00
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*
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2019-06-20 02:58:25 +03:00
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* This software may be used and distributed according to the terms of the
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* GNU General Public License version 2.
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2018-10-31 21:48:12 +03:00
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*/
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2019-10-11 15:26:59 +03:00
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2018-10-31 21:48:12 +03:00
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#pragma once
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2019-05-08 03:36:45 +03:00
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#include <chrono>
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#include <memory>
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#include <folly/Synchronized.h>
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2018-10-31 21:48:12 +03:00
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2019-06-11 22:59:03 +03:00
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#include "eden/fs/config/gen-cpp2/eden_config_types.h"
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2018-10-31 21:48:12 +03:00
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namespace facebook {
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namespace eden {
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2019-05-08 03:36:45 +03:00
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class EdenConfig;
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/**
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* An interface that defines how to obtain a possibly reloaded EdenConfig
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2018-10-31 21:48:12 +03:00
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* instance.
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*/
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class ReloadableConfig {
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public:
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2019-05-08 03:36:45 +03:00
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explicit ReloadableConfig(std::shared_ptr<const EdenConfig> config);
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~ReloadableConfig();
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2018-10-31 21:48:12 +03:00
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/**
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2019-06-11 22:59:03 +03:00
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* Get the EdenConfig data.
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*
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* The config data may be reloaded from disk depending on the value of the
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* reload parameter.
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2018-10-31 21:48:12 +03:00
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*/
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2019-06-11 22:59:03 +03:00
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std::shared_ptr<const EdenConfig> getEdenConfig(
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ConfigReloadBehavior reload = ConfigReloadBehavior::AutoReload);
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2019-05-08 03:36:45 +03:00
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private:
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struct ConfigState {
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explicit ConfigState(const std::shared_ptr<const EdenConfig>& config)
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: config{config} {}
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std::chrono::steady_clock::time_point lastCheck;
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std::shared_ptr<const EdenConfig> config;
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};
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folly::Synchronized<ConfigState> state_;
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2018-10-31 21:48:12 +03:00
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};
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} // namespace eden
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} // namespace facebook
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