mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 09:22:05 +00:00
88 lines
3.7 KiB
C++
88 lines
3.7 KiB
C++
#pragma once
|
|
|
|
#include <atomic>
|
|
|
|
#include <Common/ThreadPool.h>
|
|
#include <Common/ZooKeeper/Common.h>
|
|
#include <Common/ZooKeeper/ZooKeeper.h>
|
|
#include <Common/ConcurrentBoundedQueue.h>
|
|
|
|
#include <Access/MemoryAccessStorage.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
class AccessChangesNotifier;
|
|
|
|
/// Implementation of IAccessStorage which keeps all data in zookeeper.
|
|
class ReplicatedAccessStorage : public IAccessStorage
|
|
{
|
|
public:
|
|
static constexpr char STORAGE_TYPE[] = "replicated";
|
|
|
|
ReplicatedAccessStorage(const String & storage_name, const String & zookeeper_path, zkutil::GetZooKeeper get_zookeeper, AccessChangesNotifier & changes_notifier_, bool allow_backup);
|
|
virtual ~ReplicatedAccessStorage() override;
|
|
|
|
const char * getStorageType() const override { return STORAGE_TYPE; }
|
|
|
|
void reload() override;
|
|
void startPeriodicReloading() override { startWatchingThread(); }
|
|
void stopPeriodicReloading() override { stopWatchingThread(); }
|
|
|
|
bool exists(const UUID & id) const override;
|
|
|
|
bool isBackupAllowed() const override { return backup_allowed; }
|
|
void backup(BackupEntriesCollector & backup_entries_collector, const String & data_path_in_backup, AccessEntityType type) const override;
|
|
void restoreFromBackup(RestorerFromBackup & restorer) override;
|
|
|
|
private:
|
|
String zookeeper_path;
|
|
const zkutil::GetZooKeeper get_zookeeper;
|
|
|
|
zkutil::ZooKeeperPtr cached_zookeeper TSA_GUARDED_BY(cached_zookeeper_mutex);
|
|
std::mutex cached_zookeeper_mutex;
|
|
|
|
std::atomic<bool> watching = false;
|
|
ThreadFromGlobalPool watching_thread;
|
|
std::shared_ptr<ConcurrentBoundedQueue<UUID>> watched_queue;
|
|
|
|
std::optional<UUID> insertImpl(const AccessEntityPtr & entity, bool replace_if_exists, bool throw_if_exists) override;
|
|
bool removeImpl(const UUID & id, bool throw_if_not_exists) override;
|
|
bool updateImpl(const UUID & id, const UpdateFunc & update_func, bool throw_if_not_exists) override;
|
|
|
|
bool insertWithID(const UUID & id, const AccessEntityPtr & new_entity, bool replace_if_exists, bool throw_if_exists);
|
|
bool insertZooKeeper(const zkutil::ZooKeeperPtr & zookeeper, const UUID & id, const AccessEntityPtr & entity, bool replace_if_exists, bool throw_if_exists);
|
|
bool removeZooKeeper(const zkutil::ZooKeeperPtr & zookeeper, const UUID & id, bool throw_if_not_exists);
|
|
bool updateZooKeeper(const zkutil::ZooKeeperPtr & zookeeper, const UUID & id, const UpdateFunc & update_func, bool throw_if_not_exists);
|
|
|
|
void initZooKeeperIfNeeded();
|
|
zkutil::ZooKeeperPtr getZooKeeper();
|
|
zkutil::ZooKeeperPtr getZooKeeperNoLock() TSA_REQUIRES(cached_zookeeper_mutex);
|
|
void createRootNodes(const zkutil::ZooKeeperPtr & zookeeper);
|
|
|
|
void startWatchingThread();
|
|
void stopWatchingThread();
|
|
|
|
void runWatchingThread();
|
|
void resetAfterError();
|
|
|
|
bool refresh();
|
|
void refreshEntities(const zkutil::ZooKeeperPtr & zookeeper, bool all);
|
|
void refreshEntity(const zkutil::ZooKeeperPtr & zookeeper, const UUID & id);
|
|
void refreshEntityNoLock(const zkutil::ZooKeeperPtr & zookeeper, const UUID & id) TSA_REQUIRES(mutex);
|
|
|
|
AccessEntityPtr tryReadEntityFromZooKeeper(const zkutil::ZooKeeperPtr & zookeeper, const UUID & id) const;
|
|
void setEntityNoLock(const UUID & id, const AccessEntityPtr & entity) TSA_REQUIRES(mutex);
|
|
void removeEntityNoLock(const UUID & id) TSA_REQUIRES(mutex);
|
|
|
|
std::optional<UUID> findImpl(AccessEntityType type, const String & name) const override;
|
|
std::vector<UUID> findAllImpl(AccessEntityType type) const override;
|
|
AccessEntityPtr readImpl(const UUID & id, bool throw_if_not_exists) const override;
|
|
|
|
mutable std::mutex mutex;
|
|
MemoryAccessStorage memory_storage TSA_GUARDED_BY(mutex);
|
|
AccessChangesNotifier & changes_notifier;
|
|
const bool backup_allowed = false;
|
|
};
|
|
}
|