bbad8f4677
Move replica-oriented classes to the replica namespace. The main classes moved are ::database, ::keyspace, and ::table, but a few ancillary classes are also moved. There are certainly classes that should be moved but aren't (like distributed_loader) but we have to start somewhere. References are adjusted treewide. In many cases, it is obvious that a call site should not access the replica (but the data_dictionary instead), but that is left for separate work. scylla-gdb.py is adjusted to look for both the new and old names.
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/*
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* Copyright (C) 2020-present ScyllaDB
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*
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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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#pragma once
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#include <seastar/core/semaphore.hh>
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#include <seastar/core/future.hh>
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#include <seastar/core/gate.hh>
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#include <seastar/core/sharded.hh>
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#include "sstables/version.hh"
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#include "gms/feature.hh"
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using namespace seastar;
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namespace replica {
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class database;
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}
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namespace gms {
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class gossiper;
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class feature_service;
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}
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namespace db {
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class sstables_format_selector;
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class feature_enabled_listener : public gms::feature::listener {
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sstables_format_selector& _selector;
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sstables::sstable_version_types _format;
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public:
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feature_enabled_listener(sstables_format_selector& s, sstables::sstable_version_types format)
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: _selector(s)
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, _format(format)
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{ }
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void on_enabled() override;
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};
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class sstables_format_selector {
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gms::gossiper& _gossiper;
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sharded<gms::feature_service>& _features;
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sharded<replica::database>& _db;
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seastar::named_semaphore _sem = {1, named_semaphore_exception_factory{"feature listeners"}};
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seastar::gate _sel;
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feature_enabled_listener _md_feature_listener;
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sstables::sstable_version_types _selected_format = sstables::sstable_version_types::mc;
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future<> select_format(sstables::sstable_version_types new_format);
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future<> read_sstables_format();
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future<> do_maybe_select_format(sstables::sstable_version_types new_format);
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public:
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sstables_format_selector(gms::gossiper& g, sharded<gms::feature_service>& f, sharded<replica::database>& db);
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future<> start();
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future<> stop();
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future<> maybe_select_format(sstables::sstable_version_types new_format);
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void sync() {
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get_units(_sem, 1).get0();
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}
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};
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} // namespace sstables
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