mirror of
https://github.com/matrix-construct/construct
synced 2024-12-11 08:02:59 +01:00
112 lines
1.9 KiB
C++
112 lines
1.9 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2023 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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decltype(ircd::m::vm::sequence::dock)
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ircd::m::vm::sequence::dock;
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decltype(ircd::m::vm::sequence::retired)
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ircd::m::vm::sequence::retired;
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decltype(ircd::m::vm::sequence::committed)
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ircd::m::vm::sequence::committed;
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decltype(ircd::m::vm::sequence::uncommitted)
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ircd::m::vm::sequence::uncommitted;
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//
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// refresh::refresh
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//
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ircd::m::vm::sequence::refresh::refresh()
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{
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auto &database
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{
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db::database::get("events")
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};
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if(!database.slave)
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return;
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this->database[0] = db::sequence(database);
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this->retired[0] = sequence::retired;
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db::refresh(database);
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sequence::retired = sequence::get(this->event_id);
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this->database[1] = db::sequence(database);
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this->retired[1] = sequence::retired;
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}
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//
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// tools
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//
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uint64_t
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ircd::m::vm::sequence::min()
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{
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const auto *const e
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{
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eval::seqmin()
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};
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return e? get(*e) : 0;
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}
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uint64_t
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ircd::m::vm::sequence::max()
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{
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const auto *const e
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{
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eval::seqmax()
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};
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return e? get(*e) : 0;
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}
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uint64_t
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ircd::m::vm::sequence::get(id::event::buf &event_id)
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{
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static constexpr auto column_idx
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{
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json::indexof<event, "event_id"_>()
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};
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auto &column
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{
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dbs::event_column.at(column_idx)
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};
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const auto it
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{
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column.rbegin()
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};
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if(!it)
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{
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// If this iterator is invalid the events db should
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// be completely fresh.
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assert(db::sequence(*dbs::events) == 0);
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return 0;
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}
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const auto &ret
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{
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byte_view<uint64_t>(it->first)
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};
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event_id = it->second;
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return ret;
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}
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const uint64_t &
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ircd::m::vm::sequence::get(const eval &eval)
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{
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return eval.sequence;
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}
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