mirror of
https://github.com/matrix-construct/construct
synced 2024-11-18 07:50:57 +01:00
2037 lines
37 KiB
C++
2037 lines
37 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) 2016-2018 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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/// Residence of the events database instance pointer.
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decltype(ircd::m::dbs::events)
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ircd::m::dbs::events
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{};
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/// Linkage for a cache of the columns of the events database which directly
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/// correspond to a property in the matrix event object. This array allows
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/// for constant time access to a column the same way one can make constant
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/// time access to a property in m::event.
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decltype(ircd::m::dbs::event_column)
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ircd::m::dbs::event_column
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{};
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/// Linkage for a reference to the event_seq column.
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decltype(ircd::m::dbs::event_idx)
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ircd::m::dbs::event_idx
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{};
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/// Linkage for a reference to the event_bad column.
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decltype(ircd::m::dbs::event_bad)
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ircd::m::dbs::event_bad
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{};
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/// Linkage for a reference to the room_head column
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decltype(ircd::m::dbs::room_head)
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ircd::m::dbs::room_head
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{};
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/// Linkage for a reference to the room_events column
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decltype(ircd::m::dbs::room_events)
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ircd::m::dbs::room_events
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{};
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/// Linkage for a reference to the room_joined column
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decltype(ircd::m::dbs::room_joined)
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ircd::m::dbs::room_joined
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{};
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/// Linkage for a reference to the room_state column
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decltype(ircd::m::dbs::room_state)
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ircd::m::dbs::room_state
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{};
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/// Linkage for a reference to the state_node column.
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decltype(ircd::m::dbs::state_node)
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ircd::m::dbs::state_node
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{};
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//
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// init
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//
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/// Initializes the m::dbs subsystem; sets up the events database. Held/called
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/// by m::init. Most of the extern variables in m::dbs are not ready until
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/// this call completes.
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ircd::m::dbs::init::init(std::string dbopts)
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{
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// Open the events database
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static const auto dbname{"events"};
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events = std::make_shared<database>(dbname, std::move(dbopts), desc::events);
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// Cache the columns for the event tuple in order for constant time lookup
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assert(event_columns == event::size());
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std::array<string_view, event::size()> keys; //TODO: why did this happen?
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_key_transform(event{}, begin(keys), end(keys)); //TODO: how did this happen?
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for(size_t i(0); i < keys.size(); ++i)
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event_column[i] = db::column
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{
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*events, keys[i]
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};
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// Cache the columns for the metadata
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event_idx = db::column{*events, desc::events__event_idx.name};
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event_bad = db::column{*events, desc::events__event_bad.name};
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room_head = db::index{*events, desc::events__room_head.name};
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room_events = db::index{*events, desc::events__room_events.name};
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room_joined = db::index{*events, desc::events__room_joined.name};
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room_state = db::index{*events, desc::events__room_state.name};
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state_node = db::column{*events, desc::events__state_node.name};
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}
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/// Shuts down the m::dbs subsystem; closes the events database. The extern
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/// variables in m::dbs will no longer be functioning after this call.
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ircd::m::dbs::init::~init()
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noexcept
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{
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// Unref DB (should close)
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events = {};
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}
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//
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// Basic write suite
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//
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void
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ircd::m::dbs::blacklist(db::txn &txn,
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const event::id &event_id,
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const write_opts &opts)
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{
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db::txn::append
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{
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txn, event_bad,
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{
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opts.op,
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string_view{event_id},
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opts.event_idx != uint64_t(-1) && opts.op == db::op::SET?
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byte_view<string_view>(opts.event_idx):
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string_view{}
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}
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};
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}
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ircd::string_view
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ircd::m::dbs::write(db::txn &txn,
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const event &event,
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const write_opts &opts)
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{
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if(unlikely(opts.event_idx == 0))
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throw ircd::error
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{
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"Cannot write to database: no index specified for event."
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};
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// event_idx
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if(opts.indexer)
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_index__event(txn, event, opts);
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// Direct columns
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db::txn::append
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{
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txn, byte_view<string_view>(opts.event_idx), event, event_column, opts.op
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};
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if(opts.head || opts.refs)
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_index__room_head(txn, event, opts);
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if(defined(json::get<"state_key"_>(event)))
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return _index_state(txn, event, opts);
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if(at<"type"_>(event) == "m.room.redaction")
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return _index_redact(txn, event, opts);
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return _index_ephem(txn, event, opts);
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}
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//
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// Internal interface
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//
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void
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ircd::m::dbs::_index__event(db::txn &txn,
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const event &event,
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const write_opts &opts)
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{
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db::txn::append
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{
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txn, dbs::event_idx,
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{
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opts.op,
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at<"event_id"_>(event),
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byte_view<string_view>(opts.event_idx)
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}
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};
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}
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ircd::string_view
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ircd::m::dbs::_index_ephem(db::txn &txn,
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const event &event,
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const write_opts &opts)
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{
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_index__room_events(txn, event, opts, opts.root_in);
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return strlcpy(opts.root_out, opts.root_in);
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}
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ircd::string_view
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ircd::m::dbs::_index_redact(db::txn &txn,
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const event &event,
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const write_opts &opts)
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try
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{
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const auto &target_id
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{
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at<"redacts"_>(event)
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};
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event::fetch target
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{
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target_id, std::nothrow
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};
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if(unlikely(!target.valid))
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log::error
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{
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"Redaction from '%s' missing redaction target '%s'",
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at<"event_id"_>(event),
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target_id
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};
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if(!defined(json::get<"state_key"_>(target)))
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{
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_index__room_events(txn, event, opts, opts.root_in);
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return strlcpy(opts.root_out, opts.root_in);
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}
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const string_view new_root
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{
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//state::remove(txn, state_root_out, state_root_in, target)
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strlcpy(opts.root_out, opts.root_in)
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};
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_index__room_events(txn, event, opts, new_root);
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return new_root;
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}
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catch(const std::exception &e)
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{
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log::error
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{
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"Failed to update state from redaction: %s", e.what()
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};
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throw;
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}
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ircd::string_view
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ircd::m::dbs::_index_state(db::txn &txn,
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const event &event,
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const write_opts &opts)
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try
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{
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const auto &type
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{
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at<"type"_>(event)
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};
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const auto &room_id
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{
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at<"room_id"_>(event)
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};
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const string_view &new_root
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{
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opts.op == db::op::SET && opts.history?
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state::insert(txn, opts.root_out, opts.root_in, event):
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strlcpy(opts.root_out, opts.root_in)
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};
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_index__room_events(txn, event, opts, new_root);
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_index__room_joined(txn, event, opts);
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_index__room_state(txn, event, opts);
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return new_root;
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}
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catch(const std::exception &e)
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{
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log::error
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{
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"Failed to update state: %s", e.what()
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};
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throw;
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}
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void
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ircd::m::dbs::_index__room_head(db::txn &txn,
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const event &event,
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const write_opts &opts)
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{
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thread_local char buf[ROOM_HEAD_KEY_MAX_SIZE];
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const ctx::critical_assertion ca;
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if(opts.head)
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{
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const string_view &key
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{
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room_head_key(buf, at<"room_id"_>(event), at<"event_id"_>(event))
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};
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db::txn::append
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{
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txn, room_head,
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{
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opts.op,
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key,
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byte_view<string_view>{opts.event_idx}
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}
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};
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}
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//TODO: If op is DELETE and we are deleting this event and thereby
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//TODO: potentially creating a gap in the reference graph (just for us
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//TODO: though) can we *re-add* the prev_events to the head?
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if(opts.refs && opts.op == db::op::SET)
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{
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const m::event::prev &prev{event};
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for(const json::array &p : json::get<"prev_events"_>(prev))
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{
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const auto &event_id
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{
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unquote(p.at(0))
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};
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const string_view &key
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{
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room_head_key(buf, at<"room_id"_>(event), event_id)
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};
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db::txn::append
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{
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txn, room_head,
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{
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db::op::DELETE,
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key,
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}
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};
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}
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}
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}
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/// Adds the entry for the room_events column into the txn.
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/// You need find/create the right state_root before this.
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void
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ircd::m::dbs::_index__room_events(db::txn &txn,
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const event &event,
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const write_opts &opts,
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const string_view &new_root)
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{
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const ctx::critical_assertion ca;
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thread_local char buf[ROOM_EVENTS_KEY_MAX_SIZE];
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const string_view &key
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{
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room_events_key(buf, at<"room_id"_>(event), at<"depth"_>(event), opts.event_idx)
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};
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db::txn::append
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{
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txn, room_events,
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{
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opts.op, // db::op
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key, // key
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new_root // val
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}
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};
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}
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/// Adds the entry for the room_joined column into the txn.
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/// This only is affected if opts.present=true
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void
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ircd::m::dbs::_index__room_joined(db::txn &txn,
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const event &event,
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const write_opts &opts)
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{
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if(!opts.present)
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return;
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if(at<"type"_>(event) != "m.room.member")
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return;
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const ctx::critical_assertion ca;
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thread_local char buf[ROOM_JOINED_KEY_MAX_SIZE];
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const string_view &key
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{
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room_joined_key(buf, at<"room_id"_>(event), at<"origin"_>(event), at<"state_key"_>(event))
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};
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const string_view &membership
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{
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m::membership(event)
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};
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assert(!empty(membership));
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db::op op;
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if(opts.op == db::op::SET) switch(hash(membership))
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{
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case hash("join"):
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op = db::op::SET;
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break;
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case hash("ban"):
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case hash("leave"):
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op = db::op::DELETE;
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break;
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default:
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return;
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}
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else if(opts.op == db::op::DELETE)
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op = opts.op;
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else
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return;
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db::txn::append
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{
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txn, room_joined,
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{
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op,
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key,
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}
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};
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}
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/// Adds the entry for the room_joined column into the txn.
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/// This only is affected if opts.present=true
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void
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ircd::m::dbs::_index__room_state(db::txn &txn,
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const event &event,
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const write_opts &opts)
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{
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if(!opts.present)
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return;
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const ctx::critical_assertion ca;
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thread_local char buf[ROOM_STATE_KEY_MAX_SIZE];
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const string_view &key
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{
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room_state_key(buf, at<"room_id"_>(event), at<"type"_>(event), at<"state_key"_>(event))
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};
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const string_view val
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{
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byte_view<string_view>(opts.event_idx)
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};
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const db::op op
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{
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opts.op == db::op::SET && at<"type"_>(event) != "m.room.redaction"?
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db::op::SET:
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db::op::DELETE
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};
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db::txn::append
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{
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txn, room_state,
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{
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op,
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key,
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value_required(op)? val : string_view{},
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}
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};
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const event &event)
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{
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return state_root(out, at<"room_id"_>(event), at<"event_id"_>(event), at<"depth"_>(event));
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const id::event &event_id)
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{
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return state_root(out, index(event_id));
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const event::idx &event_idx)
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{
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static constexpr auto idx
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{
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json::indexof<event, "room_id"_>()
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};
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auto &column
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{
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event_column.at(idx)
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};
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id::room::buf room_id;
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column(byte_view<string_view>(event_idx), [&room_id]
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(const string_view &val)
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{
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room_id = val;
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});
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return state_root(out, room_id, event_idx);
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const id::room &room_id,
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const id::event &event_id)
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{
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return state_root(out, room_id, index(event_id));
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const id::room &room_id,
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const event::idx &event_idx)
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{
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static constexpr auto idx
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{
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json::indexof<event, "depth"_>()
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};
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auto &column
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{
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event_column.at(idx)
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};
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uint64_t depth;
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column(byte_view<string_view>(event_idx), [&depth]
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(const string_view &binary)
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{
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depth = byte_view<uint64_t>(binary);
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});
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return state_root(out, room_id, event_idx, depth);
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const id::room &room_id,
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const id::event &event_id,
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const uint64_t &depth)
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{
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return state_root(out, room_id, index(event_id), depth);
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}
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ircd::string_view
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ircd::m::dbs::state_root(const mutable_buffer &out,
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const id::room &room_id,
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const event::idx &event_idx,
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const uint64_t &depth)
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{
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char keybuf[ROOM_EVENTS_KEY_MAX_SIZE]; const auto key
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{
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room_events_key(keybuf, room_id, depth, event_idx)
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};
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string_view ret;
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room_events(key, [&out, &ret](const string_view &val)
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{
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ret = { data(out), copy(out, val) };
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});
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return ret;
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}
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//
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// Database descriptors
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//
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const ircd::database::descriptor
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ircd::m::dbs::desc::events__event_idx
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{
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// name
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"_event_idx",
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|
|
// explanation
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|
R"(### developer note:
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|
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The key is an event_id and the value is the index number to be used as the
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key to all the event data columns.
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|
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)",
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// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(uint64_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
96_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
16_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
16,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__event_bad
|
|
{
|
|
// name
|
|
"_event_bad",
|
|
|
|
// explanation
|
|
R"(### developer note:
|
|
|
|
The key is an event_id. The mere existence of the key indicates we do not
|
|
have this event; it will not be a key found in the event_idx and will not
|
|
have its own idx number and we know nothing else about this event.
|
|
|
|
However the value is an optional index number of *another* event which is
|
|
recommended to be used when this missing event was essential. For example,
|
|
if other servers accept the bad event and then continue a room DAG it is
|
|
essential we know the last good prev reference to have an unbroken trace.
|
|
Such a prev reference will be recorded in this value for said use.
|
|
|
|
If this column has no value or a zero value it is being used to blacklist
|
|
an event_id for some other reason.
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(uint64_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
16,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
//
|
|
// room_head
|
|
//
|
|
|
|
/// prefix transform for room_id,event_id in room_id
|
|
///
|
|
const ircd::db::prefix_transform
|
|
ircd::m::dbs::desc::events__room_head__pfx
|
|
{
|
|
"_room_head",
|
|
[](const string_view &key)
|
|
{
|
|
return has(key, "\0"_sv);
|
|
},
|
|
|
|
[](const string_view &key)
|
|
{
|
|
return split(key, "\0"_sv).first;
|
|
}
|
|
};
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_head_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const id::event &event_id)
|
|
{
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, event_id));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_head_key(const string_view &amalgam)
|
|
{
|
|
const auto &key
|
|
{
|
|
lstrip(amalgam, "\0"_sv)
|
|
};
|
|
|
|
return
|
|
{
|
|
key
|
|
};
|
|
}
|
|
|
|
/// This column stores unreferenced (head) events for a room.
|
|
///
|
|
/// [room_id | event_id => event_idx]
|
|
///
|
|
/// The key is composed of two parts: the room_id which forms a domain for
|
|
/// iteration, and the event_id of the unreferenced event.
|
|
///
|
|
/// The value is a gratuitious event_idx of the event_id in the key. This
|
|
/// allows foregoing the query for event_id=>event_idx when one wants to fetch
|
|
/// more data for the event.
|
|
///
|
|
/// The way this column works is simple: when the m::vm writes any event (that
|
|
/// means full valid acceptance) it will SET an entry into this column for it.
|
|
/// At that time the prev_events of that event will be iterated and DELETE
|
|
/// ops will be appended in the transaction.
|
|
///
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__room_head
|
|
{
|
|
// name
|
|
"_room_head",
|
|
|
|
// explanation
|
|
R"(### developer note:
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(uint64_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
events__room_head__pfx,
|
|
|
|
// cache size
|
|
32_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
0, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
0,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
//
|
|
// room_events
|
|
//
|
|
|
|
/// Prefix transform for the events__room_events. The prefix here is a room_id
|
|
/// and the suffix is the depth+event_id concatenation.
|
|
/// for efficient sequences
|
|
///
|
|
const ircd::db::prefix_transform
|
|
ircd::m::dbs::desc::events__room_events__pfx
|
|
{
|
|
"_room_events",
|
|
|
|
[](const string_view &key)
|
|
{
|
|
return has(key, "\0"_sv);
|
|
},
|
|
|
|
[](const string_view &key)
|
|
{
|
|
return split(key, "\0"_sv).first;
|
|
}
|
|
};
|
|
|
|
/// Comparator for the events__room_events. The goal here is to sort the
|
|
/// events within a room by their depth from highest to lowest, so the
|
|
/// highest depth is hit first when a room is sought from this column.
|
|
///
|
|
const ircd::db::comparator
|
|
ircd::m::dbs::desc::events__room_events__cmp
|
|
{
|
|
"_room_events",
|
|
|
|
// less
|
|
[](const string_view &a, const string_view &b)
|
|
{
|
|
static const auto &pt
|
|
{
|
|
events__room_events__pfx
|
|
};
|
|
|
|
// Extract the prefix from the keys
|
|
const string_view pre[2]
|
|
{
|
|
pt.get(a),
|
|
pt.get(b),
|
|
};
|
|
|
|
if(size(pre[0]) != size(pre[1]))
|
|
return size(pre[0]) < size(pre[1]);
|
|
|
|
if(pre[0] != pre[1])
|
|
return pre[0] < pre[1];
|
|
|
|
// After the prefix is the depth + event_idx
|
|
const string_view post[2]
|
|
{
|
|
a.substr(size(pre[0])),
|
|
b.substr(size(pre[1])),
|
|
};
|
|
|
|
// These conditions are matched on some queries when the user only
|
|
// supplies a room id.
|
|
|
|
if(empty(post[0]))
|
|
return true;
|
|
|
|
if(empty(post[1]))
|
|
return false;
|
|
|
|
// Distill out the depth and event_idx integers
|
|
const std::pair<uint64_t, event::idx> pair[2]
|
|
{
|
|
room_events_key(post[0]),
|
|
room_events_key(post[1])
|
|
};
|
|
|
|
// When two events are at the same depth sort by index (the sequence
|
|
// number given as they were admitted into the system) otherwise
|
|
// sort by depth. Note this is a reverse order comparison.
|
|
return std::get<0>(pair[1]) != std::get<0>(pair[0])?
|
|
std::get<0>(pair[1]) < std::get<0>(pair[0]):
|
|
std::get<1>(pair[1]) < std::get<1>(pair[0]);
|
|
},
|
|
|
|
// equal
|
|
[](const string_view &a, const string_view &b)
|
|
{
|
|
return a == b;
|
|
}
|
|
};
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_events_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const uint64_t &depth)
|
|
{
|
|
const const_buffer depth_cb
|
|
{
|
|
reinterpret_cast<const char *>(&depth), sizeof(depth)
|
|
};
|
|
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, depth_cb));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_events_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const uint64_t &depth,
|
|
const event::idx &event_idx)
|
|
{
|
|
const const_buffer depth_cb
|
|
{
|
|
reinterpret_cast<const char *>(&depth), sizeof(depth)
|
|
};
|
|
|
|
const const_buffer event_idx_cb
|
|
{
|
|
reinterpret_cast<const char *>(&event_idx), sizeof(event_idx)
|
|
};
|
|
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, depth_cb));
|
|
consume(out, copy(out, event_idx_cb));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
std::pair<uint64_t, ircd::m::event::idx>
|
|
ircd::m::dbs::room_events_key(const string_view &amalgam)
|
|
{
|
|
assert(size(amalgam) == 1 + 8 + 8 || size(amalgam) == 1 + 8);
|
|
assert(amalgam.front() == '\0');
|
|
|
|
const uint64_t &depth
|
|
{
|
|
*reinterpret_cast<const uint64_t *>(data(amalgam) + 1)
|
|
};
|
|
|
|
const event::idx &event_idx
|
|
{
|
|
size(amalgam) >= 1 + 8 + 8?
|
|
*reinterpret_cast<const uint64_t *>(data(amalgam) + 1 + 8):
|
|
std::numeric_limits<uint64_t>::max()
|
|
};
|
|
|
|
// Make sure these are copied rather than ever returning references in
|
|
// a tuple because the chance the integers will be aligned is low.
|
|
return { depth, event_idx };
|
|
}
|
|
|
|
/// This column stores events in sequence in a room. Consider the following:
|
|
///
|
|
/// [room_id | depth + event_idx => state_root]
|
|
///
|
|
/// The key is composed from three parts:
|
|
///
|
|
/// - `room_id` is the official prefix, bounding the sequence. That means we
|
|
/// make a blind query with just a room_id and get to the beginning of the
|
|
/// sequence, then iterate until we stop before the next room_id (upper bound).
|
|
///
|
|
/// - `depth` is the ordering. Within the sequence, all elements are ordered by
|
|
/// depth from HIGHEST TO LOWEST. The sequence will start at the highest depth.
|
|
/// NOTE: Depth is a fixed 8 byte binary integer.
|
|
///
|
|
/// - `event_idx` is the key suffix. This column serves to sequence all events
|
|
/// within a room ordered by depth. There may be duplicate room_id|depth
|
|
/// prefixing but the event_idx suffix gives the key total uniqueness.
|
|
/// NOTE: event_idx is a fixed 8 byte binary integer.
|
|
///
|
|
/// The value is then used to store the node ID of the state tree root at this
|
|
/// event. Nodes of the state tree are stored in the state_node column. From
|
|
/// that root node the state of the room at the time of this event_id can be
|
|
/// queried.
|
|
///
|
|
/// There is one caveat here: we can't directly take a room_id and an event_idx
|
|
/// and make a trivial query to find the state root, since the depth number
|
|
/// gets in the way. Rather than creating yet another column without the depth,
|
|
/// for the time being, we pay the cost of an extra query to events_depth and
|
|
/// find that missing piece to make the exact query with all three key parts.
|
|
///
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__room_events
|
|
{
|
|
// name
|
|
"_room_events",
|
|
|
|
// explanation
|
|
R"(### developer note:
|
|
|
|
the prefix transform is in effect. this column indexes events by
|
|
room_id offering an iterable bound of the index prefixed by room_id
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
events__room_events__cmp,
|
|
|
|
// prefix transform
|
|
events__room_events__pfx,
|
|
|
|
// cache size
|
|
64_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
24_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
0, // no bloom filter because of possible comparator issues
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
//
|
|
// joined sequential
|
|
//
|
|
|
|
/// Prefix transform for the events__room_joined
|
|
///
|
|
const ircd::db::prefix_transform
|
|
ircd::m::dbs::desc::events__room_joined__pfx
|
|
{
|
|
"_room_joined",
|
|
|
|
[](const string_view &key)
|
|
{
|
|
return has(key, "\0"_sv);
|
|
},
|
|
|
|
[](const string_view &key)
|
|
{
|
|
return split(key, "\0"_sv).first;
|
|
}
|
|
};
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_joined_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const string_view &origin)
|
|
{
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, origin));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_joined_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const string_view &origin,
|
|
const id::user &member)
|
|
{
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, origin));
|
|
consume(out, copy(out, member));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
std::pair<ircd::string_view, ircd::string_view>
|
|
ircd::m::dbs::room_joined_key(const string_view &amalgam)
|
|
{
|
|
const auto &key
|
|
{
|
|
lstrip(amalgam, "\0"_sv)
|
|
};
|
|
|
|
const auto &s
|
|
{
|
|
split(key, "@"_sv)
|
|
};
|
|
|
|
return
|
|
{
|
|
{ s.first },
|
|
!empty(s.second)?
|
|
string_view{begin(s.second) - 1, end(s.second)}:
|
|
string_view{}
|
|
};
|
|
}
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__room_joined
|
|
{
|
|
// name
|
|
"_room_joined",
|
|
|
|
// explanation
|
|
R"(### developer note:
|
|
|
|
the prefix transform is in effect. this column indexes events by
|
|
room_id offering an iterable bound of the index prefixed by room_id
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(uint64_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
events__room_joined__pfx,
|
|
|
|
// cache size
|
|
64_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
16_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
10,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
//
|
|
// state sequential
|
|
//
|
|
|
|
/// prefix transform for type,state_key in room_id
|
|
///
|
|
/// This transform is special for concatenating room_id with type and state_key
|
|
/// in that order with prefix being the room_id (this may change to room_id+
|
|
/// type
|
|
///
|
|
const ircd::db::prefix_transform
|
|
ircd::m::dbs::desc::events__room_state__pfx
|
|
{
|
|
"_room_state",
|
|
[](const string_view &key)
|
|
{
|
|
return has(key, "\0"_sv);
|
|
},
|
|
|
|
[](const string_view &key)
|
|
{
|
|
return split(key, "\0"_sv).first;
|
|
}
|
|
};
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_state_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const string_view &type,
|
|
const string_view &state_key)
|
|
{
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, type));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, state_key));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::m::dbs::room_state_key(const mutable_buffer &out_,
|
|
const id::room &room_id,
|
|
const string_view &type)
|
|
{
|
|
mutable_buffer out{out_};
|
|
consume(out, copy(out, room_id));
|
|
consume(out, copy(out, "\0"_sv));
|
|
consume(out, copy(out, type));
|
|
return { data(out_), data(out) };
|
|
}
|
|
|
|
std::pair<ircd::string_view, ircd::string_view>
|
|
ircd::m::dbs::room_state_key(const string_view &amalgam)
|
|
{
|
|
const auto &key
|
|
{
|
|
lstrip(amalgam, "\0"_sv)
|
|
};
|
|
|
|
const auto &s
|
|
{
|
|
split(key, "\0"_sv)
|
|
};
|
|
|
|
return
|
|
{
|
|
s.first, s.second
|
|
};
|
|
}
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__room_state
|
|
{
|
|
// name
|
|
"_room_state",
|
|
|
|
// explanation
|
|
R"(### developer note:
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(uint64_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
events__room_state__pfx,
|
|
|
|
// cache size
|
|
128_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
32_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
16,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
/// State nodes are pieces of the m::state:: b-tree. The key is the hash
|
|
/// of the value, which serves as the ID of the node when referenced in
|
|
/// the tree. see: m/state.h for details.
|
|
///
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__state_node
|
|
{
|
|
// name
|
|
"_state_node",
|
|
|
|
// explanation
|
|
R"(### developer note:
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(ircd::string_view), typeid(ircd::string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
96_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
24_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
//
|
|
// Direct column descriptors
|
|
//
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_event_id
|
|
{
|
|
// name
|
|
"event_id",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
10.1
|
|
The id of event.
|
|
|
|
10.4
|
|
MUST NOT exceed 255 bytes.
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
32_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_type
|
|
{
|
|
// name
|
|
"type",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
10.1
|
|
The type of event. This SHOULD be namespaced similar to Java package naming conventions
|
|
e.g. 'com.example.subdomain.event.type'.
|
|
|
|
10.4
|
|
MUST NOT exceed 255 bytes.
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_content
|
|
{
|
|
// name
|
|
"content",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
10.1
|
|
The fields in this object will vary depending on the type of event. When interacting
|
|
with the REST API, this is the HTTP body.
|
|
|
|
### developer note:
|
|
Since events must not exceed 64 KiB the maximum size for the content is the remaining
|
|
space after all the other fields for the event are rendered.
|
|
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
32_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_redacts
|
|
{
|
|
// name
|
|
"redacts",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
value is targeted event_id
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_room_id
|
|
{
|
|
// name
|
|
"room_id",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
10.2 (apropos room events)
|
|
Required. The ID of the room associated with this event.
|
|
|
|
10.4
|
|
MUST NOT exceed 255 bytes.
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_sender
|
|
{
|
|
// name
|
|
"sender",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
10.2 (apropos room events)
|
|
Required. Contains the fully-qualified ID of the user who sent this event.
|
|
|
|
10.4
|
|
MUST NOT exceed 255 bytes.
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_state_key
|
|
{
|
|
// name
|
|
"state_key",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
10.3 (apropos room state events)
|
|
A unique key which defines the overwriting semantics for this piece of room state.
|
|
This value is often a zero-length string. The presence of this key makes this event a
|
|
State Event. The key MUST NOT start with '_'.
|
|
|
|
10.4
|
|
MUST NOT exceed 255 bytes.
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_origin
|
|
{
|
|
// name
|
|
"origin",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
FEDERATION 4.1
|
|
DNS name of homeserver that created this PDU
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_origin_server_ts
|
|
{
|
|
// name
|
|
"origin_server_ts",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
FEDERATION 4.1
|
|
Timestamp in milliseconds on origin homeserver when this PDU was created.
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
value is a machine integer (binary)
|
|
|
|
TODO: consider unsigned rather than time_t because of millisecond precision
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(time_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_signatures
|
|
{
|
|
// name
|
|
"signatures",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_auth_events
|
|
{
|
|
// name
|
|
"auth_events",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number..
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_depth
|
|
{
|
|
// name
|
|
"depth",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number. value is long integer
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(int64_t)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_hashes
|
|
{
|
|
// name
|
|
"hashes",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number..
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_membership
|
|
{
|
|
// name
|
|
"membership",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
16_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_prev_events
|
|
{
|
|
// name
|
|
"prev_events",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
24_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
true,
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events_prev_state
|
|
{
|
|
// name
|
|
"prev_state",
|
|
|
|
// explanation
|
|
R"(### protocol note:
|
|
|
|
### developer note:
|
|
key is event_idx number.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(uint64_t), typeid(ircd::string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
8_MiB, //TODO: conf
|
|
|
|
// cache size for compressed assets
|
|
8_MiB, //TODO: conf
|
|
|
|
// bloom filter bits
|
|
12,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
namespace ircd::m::dbs::desc
|
|
{
|
|
extern const ircd::database::descriptor events__default;
|
|
};
|
|
|
|
const ircd::database::descriptor
|
|
ircd::m::dbs::desc::events__default
|
|
{
|
|
// name
|
|
"default",
|
|
|
|
// explanation
|
|
R"(
|
|
This column is unused but required.
|
|
)",
|
|
|
|
// typing (key, value)
|
|
{
|
|
typeid(string_view), typeid(string_view)
|
|
},
|
|
|
|
// options
|
|
{},
|
|
|
|
// comparator
|
|
{},
|
|
|
|
// prefix transform
|
|
{},
|
|
|
|
// cache size
|
|
0_MiB,
|
|
|
|
// cache size for compressed assets
|
|
0_MiB,
|
|
|
|
// bloom filter bits
|
|
0,
|
|
|
|
// expect queries hit
|
|
false,
|
|
};
|
|
|
|
const ircd::database::description
|
|
ircd::m::dbs::desc::events
|
|
{
|
|
// Requirement of RocksDB/LevelDB
|
|
events__default,
|
|
|
|
//
|
|
// These columns directly represent event fields indexed by event_idx
|
|
// number and the value is the actual event values. Some values may be
|
|
// JSON, like content.
|
|
//
|
|
|
|
events_auth_events,
|
|
events_content,
|
|
events_depth,
|
|
events_event_id,
|
|
events_hashes,
|
|
events_membership,
|
|
events_origin,
|
|
events_origin_server_ts,
|
|
events_prev_events,
|
|
events_prev_state,
|
|
events_redacts,
|
|
events_room_id,
|
|
events_sender,
|
|
events_signatures,
|
|
events_state_key,
|
|
events_type,
|
|
|
|
//
|
|
// These columns are metadata oriented around the event data.
|
|
//
|
|
|
|
// event_id => uint64_t
|
|
// Mapping of event_id to index number.
|
|
events__event_idx,
|
|
|
|
// event_id => uint64_t
|
|
// Mapping of faulty event_id to possible alternative event_idx.
|
|
events__event_bad,
|
|
|
|
// (room_id, event_id) => (event_idx)
|
|
// Mapping of all current head events for a room.
|
|
events__room_head,
|
|
|
|
// (room_id, (depth, event_idx)) => (state_root)
|
|
// Sequence of all events for a room, ever.
|
|
events__room_events,
|
|
|
|
// (room_id, (origin, user_id)) => ()
|
|
// Sequence of all PRESENTLY JOINED joined for a room.
|
|
events__room_joined,
|
|
|
|
// (room_id, (type, state_key)) => (event_id)
|
|
// Sequence of the PRESENT STATE of the room.
|
|
events__room_state,
|
|
|
|
// (state tree node id) => (state tree node)
|
|
// Mapping of state tree node id to node data.
|
|
events__state_node,
|
|
};
|