mirror of
https://github.com/matrix-construct/construct
synced 2024-11-10 20:11:07 +01:00
144 lines
4 KiB
C++
144 lines
4 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2022 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
/// Cancels all background work by the events database. This will make the
|
|
/// database shutdown more fluid, without waiting for large compactions.
|
|
static const ircd::run::changed
|
|
ircd_m_dbs_handle_quit
|
|
{
|
|
ircd::run::level::QUIT, []
|
|
{
|
|
if(ircd::m::dbs::events)
|
|
ircd::db::bgcancel(*ircd::m::dbs::events, false); // non-blocking
|
|
}
|
|
};
|
|
|
|
/// Initializes the m::dbs subsystem; sets up the events database. Held/called
|
|
/// by m::init. Most of the extern variables in m::dbs are not ready until
|
|
/// this call completes.
|
|
///
|
|
/// We also update the fs::basepath for the database directory to include our
|
|
/// servername in the path component. The fs::base::DB setting was generated
|
|
/// during the build and install process, and is unaware of our servername
|
|
/// at runtime. This change deconflicts multiple instances of IRCd running in
|
|
/// the same installation prefix using different servernames (i.e clustering
|
|
/// on the same machine).
|
|
///
|
|
ircd::m::dbs::init::init(const string_view &servername,
|
|
std::string dbopts)
|
|
:our_dbpath
|
|
{
|
|
fs::path_string(fs::path_views
|
|
{
|
|
fs::base::db, servername
|
|
})
|
|
}
|
|
,their_dbpath
|
|
{
|
|
fs::base::db
|
|
}
|
|
{
|
|
const unwind_exceptional dtors
|
|
{
|
|
[this] { this->~init(); }
|
|
};
|
|
|
|
// NOTE that this is a global change that leaks outside of ircd::m. The
|
|
// database directory for the entire process is being changed here.
|
|
fs::base::db.set(our_dbpath);
|
|
|
|
// Recall the db directory init manually with the now-updated basepath
|
|
db::chdir();
|
|
|
|
// Open database
|
|
events = std::make_shared<database>
|
|
(
|
|
"events", std::move(dbopts), desc::events
|
|
);
|
|
|
|
init_columns();
|
|
apply_updates();
|
|
}
|
|
|
|
/// Shuts down the m::dbs subsystem; closes the events database. The extern
|
|
/// variables in m::dbs will no longer be functioning after this call.
|
|
ircd::m::dbs::init::~init()
|
|
noexcept
|
|
{
|
|
// Unref DB (should close)
|
|
events = {};
|
|
|
|
// restore the fs::base::DB path the way we found it.
|
|
fs::base::db.set(their_dbpath);
|
|
}
|
|
|
|
void
|
|
ircd::m::dbs::init::init_columns()
|
|
{
|
|
// Cache the columns for the event tuple in order for constant time lookup
|
|
assert(event_columns == event::size());
|
|
std::array<string_view, event::size()> keys;
|
|
_key_transform(event{}, begin(keys), end(keys));
|
|
|
|
// Construct global convenience references for the event property columns.
|
|
for(size_t i(0); i < keys.size(); ++i)
|
|
event_column.at(i) = db::column
|
|
{
|
|
*events, keys.at(i), std::nothrow
|
|
};
|
|
|
|
// Construct global convenience references for the metadata columns
|
|
event_idx = db::column{*events, desc::event_idx.name};
|
|
event_json = db::column{*events, desc::event_json.name};
|
|
event_refs = db::domain{*events, desc::event_refs.name};
|
|
event_horizon = db::domain{*events, desc::event_horizon.name};
|
|
event_sender = db::domain{*events, desc::event_sender.name};
|
|
event_type = db::domain{*events, desc::event_type.name};
|
|
event_state = db::domain{*events, desc::event_state.name};
|
|
room_head = db::domain{*events, desc::room_head.name};
|
|
room_events = db::domain{*events, desc::room_events.name};
|
|
room_type = db::domain{*events, desc::room_type.name};
|
|
room_joined = db::domain{*events, desc::room_joined.name};
|
|
room_state = db::domain{*events, desc::room_state.name};
|
|
room_state_space = db::domain{*events, desc::room_state_space.name};
|
|
}
|
|
|
|
void
|
|
ircd::m::dbs::init::apply_updates()
|
|
{
|
|
size_t i(0);
|
|
for(auto update(init::update); *update; ++update, ++i) try
|
|
{
|
|
log::debug
|
|
{
|
|
log, "Checking for database schema update #%zu ...",
|
|
i,
|
|
};
|
|
|
|
(*update)();
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::critical
|
|
{
|
|
log, "Database schema update #%zu :%s",
|
|
i,
|
|
e.what(),
|
|
};
|
|
|
|
throw;
|
|
}
|
|
}
|
|
|
|
decltype(ircd::m::dbs::init::update)
|
|
ircd::m::dbs::init::update
|
|
{
|
|
nullptr,
|
|
};
|