// 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/>. #ifndef EMITTER_H #define EMITTER_H #include <boost/shared_ptr.hpp> #include <boost/optional.hpp> #include <string> #include <stdint.h> //---------------------------------------------------------------- namespace thin_provisioning { //------------------------------------------------ // Here's a little grammar for how this all hangs together: // // superblock := <uuid> <time> <trans_id> <data_block_size> device* // device := <dev id> <transaction id> <creation time> <snap time> <binding> // binding := (<identifier> | <mapping>)* // mapping := range_map | single_map // range_map := <origin_begin> <origin_end> <data_begin> // single_map := <origin> <data> // named_mapping := <identifier> <mapping> //------------------------------------------------ class emitter { public: typedef boost::shared_ptr<emitter> ptr; virtual ~emitter() {} 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, boost::optional<uint64_t> metadata_snap) = 0; virtual void end_superblock() = 0; virtual void begin_device(uint32_t dev_id, uint64_t mapped_blocks, uint64_t trans_id, uint64_t creation_time, uint64_t snap_time) = 0; virtual void end_device() = 0; virtual void begin_named_mapping(std::string const &name) = 0; virtual void end_named_mapping() = 0; virtual void identifier(std::string const &name) = 0; virtual void range_map(uint64_t origin_begin, uint64_t data_begin, uint32_t time, uint64_t len) = 0; virtual void single_map(uint64_t origin_block, uint64_t data_block, uint32_t time) = 0; }; } //---------------------------------------------------------------- #endif