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Allow opening and closing backends to be async

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This commit is contained in:
Tim Wojtulewicz 2025-01-16 17:08:23 -07:00
parent ea87c773cd
commit 4695060d75
16 changed files with 271 additions and 107 deletions
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22
src/storage/Manager.h
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@ -34,9 +34,20 @@ public:
void InitPostScript();
/**
* Opens a new storage backend.
* Instantiates a new backend object. The backend will be in a closed state, and OpenBackend()
* will need to be called to fully initialize it.
*
* @param type The tag for the type of backend being opened.
* @return A std::expected containing either a valid BackendPtr with the
* result of the operation or a string containing an error message for
* failure.
*/
zeek::expected<BackendPtr, std::string> Instantiate(const Tag& type);
/**
* Opens a new storage backend.
*
* @param backend The backend object to open.
* @param options A record val representing the configuration for this type of
* backend.
* @param key_type The script-side type of the keys stored in the backend. Used for
@ -46,19 +57,22 @@ public:
* @return An optional value potentially containing an error string if needed. Will be
* unset if the operation succeeded.
*/
zeek::expected<BackendPtr, std::string> OpenBackend(const Tag& type, RecordValPtr options, TypePtr key_type,
TypePtr val_type);
ErrorResult OpenBackend(BackendPtr backend, RecordValPtr options, TypePtr key_type, TypePtr val_type,
OpenResultCallback* cb = nullptr);
/**
* Closes a storage backend.
*/
void CloseBackend(BackendPtr backend);
ErrorResult CloseBackend(BackendPtr backend, ErrorResultCallback* cb = nullptr);
protected:
friend class storage::detail::ExpirationTimer;
void Expire();
void StartExpirationTimer();
friend class storage::OpenResultCallback;
void AddBackendToMap(BackendPtr backend);
private:
std::vector<BackendPtr> backends;
std::mutex backends_mtx;