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0a9436fc1a
For passing schema across shards/nodes. Also, for keeping in schema_registry when there's no live schema_ptr.
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
/*
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* Copyright 2015 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* 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
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "frozen_schema.hh"
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#include "db/schema_tables.hh"
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#include "schema_mutations.hh"
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template class db::serializer<frozen_schema>;
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frozen_schema::frozen_schema(const schema_ptr& s)
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: _data([&s] {
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bytes_ostream out;
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db::serializer<table_schema_version>(s->version()).write(out);
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schema_mutations sm = db::schema_tables::make_table_mutations(s, api::new_timestamp());
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db::serializer<schema_mutations>(sm).write(out);
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return to_bytes(out.linearize());
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}())
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{ }
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schema_ptr frozen_schema::unfreeze() const {
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data_input in(_data);
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auto version = db::serializer<table_schema_version>::read(in);
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auto mutations = db::serializer<schema_mutations>::read(in);
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return db::schema_tables::create_table_from_mutations(mutations, version);
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}
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frozen_schema::frozen_schema(bytes b)
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: _data(std::move(b))
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{ }
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template<>
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db::serializer<frozen_schema>::serializer(const frozen_schema& v)
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: _item(v)
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, _size(db::serializer<bytes>(v._data).size())
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{ }
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template<>
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void
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db::serializer<frozen_schema>::write(output& out, const frozen_schema& v) {
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db::serializer<bytes>(v._data).write(out);
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}
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template<>
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frozen_schema db::serializer<frozen_schema>::read(input& in) {
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return frozen_schema(db::serializer<bytes>::read(in));
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}
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