fcb8d040e8
Instead of lengthy blurbs, switch to single-line, machine-readable standardized (https://spdx.dev) license identifiers. The Linux kernel switched long ago, so there is strong precedent. Three cases are handled: AGPL-only, Apache-only, and dual licensed. For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0), reasoning that our changes are extensive enough to apply our license. The changes we applied mechanically with a script, except to licenses/README.md. Closes #9937
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
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* Copyright (C) 2021-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <seastar/core/sharded.hh>
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#include "utils/UUID.hh"
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#include "sstables/shared_sstable.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 netw { class messaging_service; }
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namespace db {
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class system_distributed_keyspace;
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namespace view {
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class view_update_generator;
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}
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}
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// The handler of the 'storage_service/load_new_ss_tables' endpoint which, in
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// turn, is the target of the 'nodetool refresh' command.
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// Gets sstables from the upload directory and makes them available in the
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// system. Built on top of the distributed_loader functionality.
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class sstables_loader : public seastar::peering_sharded_service<sstables_loader> {
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sharded<replica::database>& _db;
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sharded<db::system_distributed_keyspace>& _sys_dist_ks;
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sharded<db::view::view_update_generator>& _view_update_generator;
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netw::messaging_service& _messaging;
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// Note that this is obviously only valid for the current shard. Users of
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// this facility should elect a shard to be the coordinator based on any
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// given objective criteria
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//
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// It shouldn't be impossible to actively serialize two callers if the need
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// ever arise.
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bool _loading_new_sstables = false;
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future<> load_and_stream(sstring ks_name, sstring cf_name,
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utils::UUID table_id, std::vector<sstables::shared_sstable> sstables,
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bool primary_replica_only);
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public:
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sstables_loader(sharded<replica::database>& db,
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sharded<db::system_distributed_keyspace>& sys_dist_ks,
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sharded<db::view::view_update_generator>& view_update_generator,
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netw::messaging_service& messaging)
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: _db(db)
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, _sys_dist_ks(sys_dist_ks)
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, _view_update_generator(view_update_generator)
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, _messaging(messaging)
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{
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}
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/**
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* Load new SSTables not currently tracked by the system
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*
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* This can be called, for instance, after copying a batch of SSTables to a CF directory.
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*
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* This should not be called in parallel for the same keyspace / column family, and doing
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* so will throw an std::runtime_exception.
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*
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* @param ks_name the keyspace in which to search for new SSTables.
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* @param cf_name the column family in which to search for new SSTables.
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* @return a future<> when the operation finishes.
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*/
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future<> load_new_sstables(sstring ks_name, sstring cf_name,
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bool load_and_stream, bool primary_replica_only);
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};
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