80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
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//
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// thin-provisioning-tools is free software: you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// thin-provisioning-tools is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with thin-provisioning-tools. If not, see
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// <http://www.gnu.org/licenses/>.
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#ifndef EMITTER_H
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#define EMITTER_H
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#include <boost/optional.hpp>
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#include <boost/optional/optional_io.hpp>
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#include <memory>
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#include <string>
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#include <stdint.h>
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//----------------------------------------------------------------
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namespace thin_provisioning {
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//------------------------------------------------
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// Here's a little grammar for how this all hangs together:
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//
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// superblock := <uuid> <time> <trans_id> <data_block_size> device*
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// device := <dev id> <transaction id> <creation time> <snap time> <binding>
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// binding := (<identifier> | <mapping>)*
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// mapping := range_map | single_map
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// range_map := <origin_begin> <origin_end> <data_begin>
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// single_map := <origin> <data>
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// named_mapping := <identifier> <mapping>
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//------------------------------------------------
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class emitter {
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public:
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typedef std::shared_ptr<emitter> ptr;
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virtual ~emitter() {}
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virtual void begin_superblock(std::string const &uuid,
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uint64_t time,
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uint64_t trans_id,
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boost::optional<uint32_t> flags,
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boost::optional<uint32_t> version,
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uint32_t data_block_size,
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uint64_t nr_data_blocks,
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boost::optional<uint64_t> metadata_snap) = 0;
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virtual void end_superblock() = 0;
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virtual void begin_device(uint32_t dev_id,
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uint64_t mapped_blocks,
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uint64_t trans_id,
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uint64_t creation_time,
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uint64_t snap_time) = 0;
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virtual void end_device() = 0;
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virtual void begin_named_mapping(std::string const &name) = 0;
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virtual void end_named_mapping() = 0;
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virtual void identifier(std::string const &name) = 0;
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virtual void range_map(uint64_t origin_begin, uint64_t data_begin, uint32_t time, uint64_t len) = 0;
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virtual void single_map(uint64_t origin_block, uint64_t data_block, uint32_t time) = 0;
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};
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}
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//----------------------------------------------------------------
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#endif
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