Move source into separate sub directories.

thin-provisioning/restore_emitter.cc

@@ -0,0 +1,143 @@
+// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools is free software: you can redistribute it
+// and/or modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with thin-provisioning-tools.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#include "restore_emitter.h"
+
+using namespace boost;
+using namespace std;
+using namespace thin_provisioning;
+
+//----------------------------------------------------------------
+
+namespace {
+	class restorer : public emitter {
+	public:
+		restorer(metadata::ptr md)
+			: md_(md),
+			  in_superblock_(false) {
+		}
+
+		virtual ~restorer() {
+		}
+
+		virtual void begin_superblock(std::string const &uuid,
+					      uint64_t time,
+					      uint64_t trans_id,
+					      uint32_t data_block_size,
+					      uint64_t nr_data_blocks,
+					      optional<uint64_t> metadata_snap) {
+			in_superblock_ = true;
+
+			superblock &sb = md_->sb_;
+			memcpy(&sb.uuid_, &uuid, sizeof(&sb.uuid_));
+			sb.time_ = time;
+			sb.trans_id_ = trans_id;
+			sb.data_block_size_ = data_block_size;
+			sb.metadata_snap_ = metadata_snap ? *metadata_snap : 0;
+			md_->data_sm_->extend(nr_data_blocks);
+		}
+
+		virtual void end_superblock() {
+			if (!in_superblock_)
+				throw runtime_error("missing superblock");
+
+			md_->commit();
+			in_superblock_ = false;
+		}
+
+		virtual void begin_device(uint32_t dev,
+					  uint64_t mapped_blocks,
+					  uint64_t trans_id,
+					  uint64_t creation_time,
+					  uint64_t snap_time) {
+			if (!in_superblock_)
+				throw runtime_error("missing superblock");
+
+			if (device_exists(dev))
+				throw std::runtime_error("Device already exists");
+
+			// Add entry to the details tree
+			uint64_t key[1] = {dev};
+			device_details details = {mapped_blocks, trans_id, (uint32_t)creation_time, (uint32_t)snap_time};
+			md_->details_->insert(key, details);
+
+			// Insert an empty mapping tree
+			single_mapping_tree::ptr new_tree(
+				new single_mapping_tree(md_->tm_,
+							block_time_ref_counter(md_->data_sm_)));
+			md_->mappings_top_level_->insert(key, new_tree->get_root());
+			md_->mappings_->set_root(md_->mappings_top_level_->get_root()); // FIXME: ugly
+			current_device_ = optional<uint32_t>(dev);
+		}
+
+		virtual void end_device() {
+			current_device_ = optional<uint32_t>();
+		}
+
+		virtual void begin_named_mapping(std::string const &name) {
+			throw runtime_error("not implemented");
+		}
+
+		virtual void end_named_mapping() {
+			throw runtime_error("not implemented");
+		}
+
+		virtual void identifier(std::string const &name) {
+			throw runtime_error("not implemented");
+		}
+
+		virtual void range_map(uint64_t origin_begin, uint64_t data_begin, uint32_t time, uint64_t len) {
+			for (uint64_t i = 0; i < len; i++)
+				single_map(origin_begin++, data_begin++, time);
+		}
+
+		virtual void single_map(uint64_t origin_block, uint64_t data_block, uint32_t time) {
+			if (!current_device_)
+				throw runtime_error("not in device");
+
+			uint64_t key[2] = {*current_device_, origin_block};
+			block_time bt;
+			bt.block_ = data_block;
+			bt.time_ = time;
+			md_->mappings_->insert(key, bt);
+			md_->mappings_top_level_->set_root(md_->mappings_->get_root());
+			md_->data_sm_->inc(data_block);
+		}
+
+	private:
+		bool device_exists(thin_dev_t dev) const {
+			uint64_t key[1] = {dev};
+			detail_tree::maybe_value v = md_->details_->lookup(key);
+			return v;
+		}
+
+		metadata::ptr md_;
+		bool in_superblock_;
+		optional<uint32_t> current_device_;
+	};
+}
+
+//----------------------------------------------------------------
+
+emitter::ptr
+thin_provisioning::create_restore_emitter(metadata::ptr md)
+{
+	return emitter::ptr(new restorer(md));
+}
+
+//----------------------------------------------------------------