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write snapshot

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This commit is contained in:
happyZYM
2024-05-04 03:49:33 +00:00
parent ec920f7255
commit 7253c68fce
11 changed files with 400 additions and 19 deletions
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15
dataguard/include/dataguard/snapshot.h
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@ -2,8 +2,12 @@
#define SNAP_SHOT_H
#include <string>
#include "map.hpp"
#include "storage/driver.h"
#include "vector.hpp"
class SnapShotManager {
bool has_connected = false;
sjtu::vector<DataDriverBase *> drivers;
public:
// For safety and simplicity, we delete all the copy/move constructor and copy/move assignment operator. Please
// manager it using smart pointer.
@ -11,5 +15,16 @@ class SnapShotManager {
SnapShotManager(SnapShotManager &&) = delete;
SnapShotManager &operator=(const SnapShotManager &) = delete;
SnapShotManager &operator=(SnapShotManager &&) = delete;
/**
* @brief connect to the data drivers
*
* @warning please ensure that the data drivers are valid and the data drivers are not changed during the life cycle.
* Meanwhile, the FileEntry collected from the data drivers should be valid during the life cycle.
*/
inline void Connect(sjtu::vector<DataDriverBase *> drivers_) {
if (has_connected) throw std::runtime_error("SnapShotManager has already connected to the data drivers");
drivers = std::move(drivers_);
has_connected = true;
}
};
#endif // SNAP_SHOT_H