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Add infrastructure for automated expiration of storage entries

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This is used for backends that don't support expiration natively.
This commit is contained in:
Tim Wojtulewicz 2024-12-06 15:29:15 -07:00
parent 8dee733a7d
commit d07d27453a
12 changed files with 96 additions and 21 deletions
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22
src/storage/Manager.h
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@ -2,12 +2,26 @@
#pragma once
#include <mutex>
#include "zeek/Timer.h"
#include "zeek/plugin/ComponentManager.h"
#include "zeek/storage/Backend.h"
#include "zeek/storage/Component.h"
namespace zeek::storage {
namespace detail {
class ExpirationTimer final : public zeek::detail::Timer {
public:
ExpirationTimer(double t) : zeek::detail::Timer(t, zeek::detail::TIMER_STORAGE_EXPIRE) {}
~ExpirationTimer() override {}
void Dispatch(double t, bool is_expire) override;
};
} // namespace detail
class Manager final : public plugin::ComponentManager<Component> {
public:
Manager();
@ -40,12 +54,14 @@ public:
*/
void CloseBackend(BackendPtr backend);
// TODO:
// - Hooks for storage-backed tables?
// - Handling aggregation from workers on a single manager?
protected:
friend class storage::detail::ExpirationTimer;
void Expire();
void StartExpirationTimer();
private:
std::vector<BackendPtr> backends;
std::mutex backends_mtx;
};
} // namespace zeek::storage