thin-provisioning-tools/thin-provisioning/device_tree.cc
2013-10-16 10:19:29 +01:00

101 lines
2.6 KiB
C++

#include "thin-provisioning/device_tree.h"
#include "persistent-data/data-structures/btree_damage_visitor.h"
using namespace persistent_data;
using namespace thin_provisioning;
//----------------------------------------------------------------
namespace {
using namespace device_tree_detail;
struct visitor_adapter {
visitor_adapter(device_visitor &dv)
: dv_(dv) {
}
void visit(btree_path const &path, device_details const &dd) {
dv_.visit(path[0], dd);
}
private:
device_visitor &dv_;
};
// No op for now, should add sanity checks in here however.
struct noop_visitor : public device_visitor {
virtual void visit(block_address dev_id, device_details const &dd) {
}
};
class ll_damage_visitor {
public:
// FIXME: is the namespace needed on here?
ll_damage_visitor(device_tree_detail::damage_visitor &v)
: v_(v) {
}
virtual void visit(btree_path const &path, btree_detail::damage const &d) {
v_.visit(missing_devices(d.desc_, d.lost_keys_));
}
private:
device_tree_detail::damage_visitor &v_;
};
}
namespace thin_provisioning {
namespace device_tree_detail {
void
device_details_traits::unpack(device_details_disk const &disk, device_details &value)
{
value.mapped_blocks_ = to_cpu<uint64_t>(disk.mapped_blocks_);
value.transaction_id_ = to_cpu<uint64_t>(disk.transaction_id_);
value.creation_time_ = to_cpu<uint32_t>(disk.creation_time_);
value.snapshotted_time_ = to_cpu<uint32_t>(disk.snapshotted_time_);
}
void
device_details_traits::pack(device_details const &value, device_details_disk &disk)
{
disk.mapped_blocks_ = to_disk<le64>(value.mapped_blocks_);
disk.transaction_id_ = to_disk<le64>(value.transaction_id_);
disk.creation_time_ = to_disk<le32>(value.creation_time_);
disk.snapshotted_time_ = to_disk<le32>(value.snapshotted_time_);
}
missing_devices::missing_devices(std::string const &desc,
run<uint64_t> const &keys)
: desc_(desc),
keys_(keys) {
}
void missing_devices::visit(damage_visitor &v) const {
v.visit(*this);
}
}
}
//----------------------------------------------------------------
void
thin_provisioning::walk_device_tree(device_tree const &tree,
device_tree_detail::device_visitor &vv,
device_tree_detail::damage_visitor &dv)
{
block_counter counter;
visitor_adapter av(vv);
ll_damage_visitor ll_dv(dv);
btree_visit_values(tree, counter, av, ll_dv);
}
void
thin_provisioning::check_device_tree(device_tree const &tree, damage_visitor &visitor)
{
noop_visitor vv;
walk_device_tree(tree, vv, visitor);
}
//----------------------------------------------------------------