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060f93477b
We must use canonical_mutation form to allow for changes in the schema of schema tables. The node which deserializes schema mutations may not have the same version of the schema tables so we cannot use frozen_mutation, which is a schema dependent form.
77 lines
2.5 KiB
C++
77 lines
2.5 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 "schema_mutations.hh"
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#include "canonical_mutation.hh"
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#include "db/schema_tables.hh"
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#include "md5_hasher.hh"
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template class db::serializer<schema_mutations>;
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template<>
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db::serializer<schema_mutations>::serializer(const schema_mutations& v)
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: _item(v)
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, _size(db::serializer<canonical_mutation>(canonical_mutation(v._columnfamilies)).size()
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+ db::serializer<canonical_mutation>(canonical_mutation(v._columns)).size())
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{ }
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template<>
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void
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db::serializer<schema_mutations>::write(output& out, const schema_mutations& v) {
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db::serializer<canonical_mutation>(canonical_mutation(v._columnfamilies)).write(out);
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db::serializer<canonical_mutation>(canonical_mutation(v._columns)).write(out);
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}
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template<>
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schema_mutations db::serializer<schema_mutations>::read(input& in) {
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auto columnfamilies = db::serializer<canonical_mutation>::read(in);
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auto columns = db::serializer<canonical_mutation>::read(in);
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return schema_mutations(
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columnfamilies.to_mutation(db::schema_tables::columnfamilies()),
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columns.to_mutation(db::schema_tables::columns())
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);
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}
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void schema_mutations::copy_to(std::vector<mutation>& dst) const {
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dst.push_back(_columnfamilies);
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dst.push_back(_columns);
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}
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table_schema_version schema_mutations::digest() const {
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md5_hasher h;
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feed_hash(h, _columnfamilies);
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feed_hash(h, _columns);
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return utils::UUID_gen::get_name_UUID(h.finalize());
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}
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bool schema_mutations::operator==(const schema_mutations& other) const {
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return _columnfamilies == other._columnfamilies
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&& _columns == other._columns;
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}
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bool schema_mutations::operator!=(const schema_mutations& other) const {
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return !(*this == other);
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}
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bool schema_mutations::live() const {
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return _columnfamilies.live_row_count() > 0 || _columns.live_row_count() > 0;
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}
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