// Matrix Construct // // Copyright (C) Matrix Construct Developers, Authors & Contributors // Copyright (C) 2016-2018 Jason Volk // // 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. #pragma once #define HAVE_IRCD_M_DBS_H /// Database Schema /// namespace ircd::m::dbs { struct init; struct write_opts; // General confs extern conf::item events_cache_enable; extern conf::item events_cache_comp_enable; extern conf::item events_mem_write_buffer_size; extern conf::item events_sst_write_buffer_size; // Database instance extern std::shared_ptr events; // Event property columns constexpr const auto event_columns{event::size()}; extern std::array event_column; // Event metadata columns extern db::column event_idx; // event_id => event_idx extern db::column event_json; // event_idx => full json extern db::index event_refs; // event_idx | ref_type, event_idx extern db::index room_head; // room_id | event_id => event_idx extern db::index room_events; // room_id | depth, event_idx => node_id extern db::index room_joined; // room_id | origin, member => event_idx extern db::index room_state; // room_id | type, state_key => event_idx extern db::column state_node; // node_id => state::node // Lowlevel util enum class ref :uint8_t; constexpr size_t EVENT_REFS_KEY_MAX_SIZE {sizeof(event::idx) + sizeof(event::idx)}; constexpr size_t ref_shift {8 * (sizeof(event::idx) - sizeof(ref))}; constexpr event::idx ref_mask {0xFFUL << ref_shift}; string_view event_refs_key(const mutable_buffer &out, const event::idx &tgt, const ref &type, const event::idx &referer); std::tuple event_refs_key(const string_view &amalgam); string_view reflect(const ref &); constexpr size_t ROOM_HEAD_KEY_MAX_SIZE {id::MAX_SIZE + 1 + id::MAX_SIZE}; string_view room_head_key(const mutable_buffer &out, const id::room &, const id::event &); string_view room_head_key(const string_view &amalgam); constexpr size_t ROOM_STATE_KEY_MAX_SIZE {id::MAX_SIZE + 256 + 256}; string_view room_state_key(const mutable_buffer &out, const id::room &, const string_view &type, const string_view &state_key); string_view room_state_key(const mutable_buffer &out, const id::room &, const string_view &type); std::pair room_state_key(const string_view &amalgam); constexpr size_t ROOM_JOINED_KEY_MAX_SIZE {id::MAX_SIZE + 256 + id::MAX_SIZE}; string_view room_joined_key(const mutable_buffer &out, const id::room &, const string_view &origin, const id::user &member); string_view room_joined_key(const mutable_buffer &out, const id::room &, const string_view &origin); std::pair room_joined_key(const string_view &amalgam); constexpr size_t ROOM_EVENTS_KEY_MAX_SIZE {id::MAX_SIZE + 1 + 8 + 8}; string_view room_events_key(const mutable_buffer &out, const id::room &, const uint64_t &depth, const event::idx &); string_view room_events_key(const mutable_buffer &out, const id::room &, const uint64_t &depth); std::pair room_events_key(const string_view &amalgam); // [GET] the state root for an event (with as much information as you have) string_view state_root(const mutable_buffer &out, const id::room &, const event::idx &, const uint64_t &depth); string_view state_root(const mutable_buffer &out, const id::room &, const event::id &, const uint64_t &depth); string_view state_root(const mutable_buffer &out, const id::room &, const event::idx &); string_view state_root(const mutable_buffer &out, const id::room &, const event::id &); string_view state_root(const mutable_buffer &out, const event::idx &); string_view state_root(const mutable_buffer &out, const event::id &); string_view state_root(const mutable_buffer &out, const event &); // [SET (txn)] Basic write suite string_view write(db::txn &, const event &, const write_opts &); void blacklist(db::txn &, const event::id &, const write_opts &); } /// Options that affect the dbs::write() of an event to the transaction. struct ircd::m::dbs::write_opts { static const std::bitset<256> event_refs_all; /// Operation code db::op op {db::op::SET}; /// Principal's index number. Most codepaths do not permit zero; must set. uint64_t event_idx {0}; /// Whether the event_id should be indexed in event_idx (you want yes). bool event_id {true}; /// Whether the event.source can be used directly for event_json. Defaults /// to false unless the caller wants to avoid a redundant re-stringify. bool json_source {false}; /// Selection of what reference types to manipulate in event_refs. Refs /// will not be made if it is not appropriate for the event anyway, so /// this defaults to all bits. User can disable one or more ref types /// by clearing a bit. std::bitset<256> event_refs {event_refs_all}; /// User can supply a view of already-generated keys with event_refs_key(). /// This vector will be checked first before generating that key, which /// can avoid any index() queries internally to generate it. vector_view event_refs_hint; /// Whether the present state table `room_state` should be updated by /// this operation if appropriate. bool present {true}; /// Whether the history state btree `state_node` + `room_events` value /// should be updated by this operation if appropriate. bool history {true}; /// The state btree root to perform the update on. string_view root_in; /// After the update is performed, the new state btree root is returned /// into this buffer. mutable_buffer root_out; /// Whether the event should be added to the room_head, indicating that /// it has not yet been referenced at the time of this write. Defaults /// to true, but if this is an older event this opt should be rethought. bool room_head {true}; /// Whether the event removes the prev_events it references from the /// room_head. This defaults to true and should almost always be true. bool room_refs {true}; }; /// Types of references indexed by event_refs. This is a single byte integer, /// which should be plenty of namespace. Internally event_refs_key() and /// event_refs store this in a high order byte of an event::idx integer. This /// is an alternative to having separate columns for each type of reference. enum class ircd::m::dbs::ref :uint8_t { // DAG PREV = 0x00, AUTH = 0x01, // m.receipt M_RECEIPT__M_READ = 0x10, // m.relates_to M_RELATES__M_REPLY = 0x20, }; /// Database Schema Descriptors /// namespace ircd::m::dbs::desc { // Full description extern const db::description events; // // Direct columns // extern conf::item events___event__bloom__bits; extern conf::item events__content__block__size; extern conf::item events__content__meta_block__size; extern conf::item events__content__cache__size; extern conf::item events__content__cache_comp__size; extern const db::descriptor events_content; extern conf::item events__depth__block__size; extern conf::item events__depth__meta_block__size; extern conf::item events__depth__cache__size; extern conf::item events__depth__cache_comp__size; extern const db::descriptor events_depth; extern conf::item events__event_id__block__size; extern conf::item events__event_id__meta_block__size; extern conf::item events__event_id__cache__size; extern conf::item events__event_id__cache_comp__size; extern const db::descriptor events_event_id; extern conf::item events__origin_server_ts__block__size; extern conf::item events__origin_server_ts__meta_block__size; extern conf::item events__origin_server_ts__cache__size; extern conf::item events__origin_server_ts__cache_comp__size; extern const db::descriptor events_origin_server_ts; extern conf::item events__room_id__block__size; extern conf::item events__room_id__meta_block__size; extern conf::item events__room_id__cache__size; extern conf::item events__room_id__cache_comp__size; extern const db::descriptor events_room_id; extern conf::item events__sender__block__size; extern conf::item events__sender__meta_block__size; extern conf::item events__sender__cache__size; extern conf::item events__sender__cache_comp__size; extern const db::descriptor events_sender; extern conf::item events__state_key__block__size; extern conf::item events__state_key__meta_block__size; extern conf::item events__state_key__cache__size; extern conf::item events__state_key__cache_comp__size; extern const db::descriptor events_state_key; extern conf::item events__type__block__size; extern conf::item events__type__meta_block__size; extern conf::item events__type__cache__size; extern conf::item events__type__cache_comp__size; extern const db::descriptor events_type; // // Metadata columns // // events index extern conf::item events__event_idx__block__size; extern conf::item events__event_idx__meta_block__size; extern conf::item events__event_idx__cache__size; extern conf::item events__event_idx__cache_comp__size; extern conf::item events__event_idx__bloom__bits; extern const db::descriptor events__event_idx; // events cache extern conf::item events__event_json__block__size; extern conf::item events__event_json__meta_block__size; extern conf::item events__event_json__cache__size; extern conf::item events__event_json__cache_comp__size; extern conf::item events__event_json__bloom__bits; extern const db::descriptor events__event_json; // events graphing extern conf::item events__event_refs__block__size; extern conf::item events__event_refs__meta_block__size; extern conf::item events__event_refs__cache__size; extern conf::item events__event_refs__cache_comp__size; extern const db::prefix_transform events__event_refs__pfx; extern const db::comparator events__event_refs__cmp; extern const db::descriptor events__event_refs; // room head mapping sequence extern conf::item events__room_head__block__size; extern conf::item events__room_head__meta_block__size; extern conf::item events__room_head__cache__size; extern const db::prefix_transform events__room_head__pfx; extern const db::descriptor events__room_head; // room events sequence extern conf::item events__room_events__block__size; extern conf::item events__room_events__meta_block__size; extern conf::item events__room_events__cache__size; extern conf::item events__room_events__cache_comp__size; extern const db::prefix_transform events__room_events__pfx; extern const db::comparator events__room_events__cmp; extern const db::descriptor events__room_events; // room present joined members sequence extern conf::item events__room_joined__block__size; extern conf::item events__room_joined__meta_block__size; extern conf::item events__room_joined__cache__size; extern conf::item events__room_joined__cache_comp__size; extern conf::item events__room_joined__bloom__bits; extern const db::prefix_transform events__room_joined__pfx; extern const db::descriptor events__room_joined; // room present state mapping sequence extern conf::item events__room_state__block__size; extern conf::item events__room_state__meta_block__size; extern conf::item events__room_state__cache__size; extern conf::item events__room_state__cache_comp__size; extern conf::item events__room_state__bloom__bits; extern const db::prefix_transform events__room_state__pfx; extern const db::descriptor events__room_state; // state btree node key-value store extern conf::item events__state_node__block__size; extern conf::item events__state_node__meta_block__size; extern conf::item events__state_node__cache__size; extern conf::item events__state_node__cache_comp__size; extern conf::item events__state_node__bloom__bits; extern const db::descriptor events__state_node; } // Internal interface; not for public. namespace ircd::m::dbs { void _index__room_state(db::txn &, const event &, const write_opts &); void _index__room_events(db::txn &, const event &, const write_opts &, const string_view &); void _index__room_joined(db::txn &, const event &, const write_opts &); void _index__room_head(db::txn &, const event &, const write_opts &); string_view _index_state(db::txn &, const event &, const write_opts &); string_view _index_redact(db::txn &, const event &, const write_opts &); string_view _index_other(db::txn &, const event &, const write_opts &); string_view _index_room(db::txn &, const event &, const write_opts &); void _index_event_refs_m_receipt_m_read(db::txn &, const event &, const write_opts &); void _index_event_refs_m_relates_m_reply(db::txn &, const event &, const write_opts &); void _index_event_refs_auth(db::txn &, const event &, const write_opts &); void _index_event_refs_prev(db::txn &, const event &, const write_opts &); void _index_event_refs(db::txn &, const event &, const write_opts &); void _index_event_id(db::txn &, const event &, const write_opts &); void _index_event(db::txn &, const event &, const write_opts &); void _append_json(db::txn &, const event &, const write_opts &); void _append_cols(db::txn &, const event &, const write_opts &); } struct ircd::m::dbs::init { init(std::string dbopts = {}); ~init() noexcept; };