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#pragma once
#include <Core/Types.h>
#include <optional>
#include <memory>
#include <Common/ZooKeeper/ZooKeeperLock.h>
#include <Common/ZooKeeper/ZooKeeper.h>
namespace DB
{
/// Very simple wrapper for zookeeper ephemeral lock. It's better to have it
/// because due to bad abstraction we use it in MergeTreeData.
struct ZeroCopyLock
{
static inline const auto ZERO_COPY_LOCK_NAME = "part_exclusive_lock";
ZeroCopyLock(const zkutil::ZooKeeperPtr & zookeeper, const std::string & lock_path, const std::string & lock_message);
bool isLocked() const { return lock->isLocked(); }
/// Actual lock
std::unique_ptr<zkutil::ZooKeeperLock> lock;
};
}
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