device_tree

thin-provisioning/device_tree.cc

@@ -0,0 +1,61 @@
+#include "thin-provisioning/device_tree.h"
+
+#include "persistent-data/data-structures/btree_damage_visitor.h"
+#include "persistent-data/transaction_manager.h"
+#include "persistent-data/space-maps/core.h"
+#include "thin-provisioning/metadata.h"
+#include "thin-provisioning/metadata_disk_structures.h"
+
+using namespace persistent_data;
+using namespace thin_provisioning;
+
+//----------------------------------------------------------------
+
+namespace {
+	using namespace device_tree_detail;
+
+	// No op for now, should add sanity checks in here however.
+	struct leaf_visitor {
+		virtual void visit(btree_path const &path, device_details const &dd) {
+		}
+	};
+
+	class ll_damage_visitor {
+	public:
+		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(path, missing_devices(d.desc_, d.lost_keys_));
+		}
+
+	private:
+		device_tree_detail::damage_visitor &v_;
+	};
+}
+
+namespace thin_provisioning {
+	namespace device_tree_detail {
+		missing_devices::missing_devices(std::string const &desc,
+						 range<uint64_t> const &keys)
+			: desc_(desc),
+			  keys_(keys) {
+		}
+
+		void missing_devices::visit(damage_visitor &v) const {
+			v.visit(*this);
+		}
+	}
+
+	void check_device_tree(device_tree const &tree, damage_visitor &visitor)
+	{
+		block_counter counter;	// FIXME: get rid of this counter arg
+		leaf_visitor vv;
+		ll_damage_visitor dv(visitor);
+
+		btree_visit_values(tree, counter, vv, dv);
+	}
+}
+
+//----------------------------------------------------------------