mirror of
https://github.com/matrix-org/dendrite.git
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Move event state key sql to a separate file
This commit is contained in:
Mark Haines
parent
cb17fbfaa5
commit
999bb82992
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@ -0,0 +1,98 @@
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package storage
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import (
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"database/sql"
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"github.com/lib/pq"
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"github.com/matrix-org/dendrite/roomserver/types"
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)
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const eventStateKeysSchema = `
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-- Numeric versions of the event "state_key"s. State keys tend to be reused so
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-- assigning each string a numeric ID should reduce the amount of data that
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-- needs to be stored and fetched from the database.
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-- It also means that many operations can work with int64 arrays rather than
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-- string arrays which may help reduce GC pressure.
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-- Well known state keys are pre-assigned numeric IDs:
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-- 1 -> "" (the empty string)
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-- Other state keys are automatically assigned numeric IDs starting from 2**16.
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-- This leaves room to add more pre-assigned numeric IDs and clearly separates
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-- the automatically assigned IDs from the pre-assigned IDs.
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CREATE SEQUENCE IF NOT EXISTS event_state_key_nid_seq START 65536;
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CREATE TABLE IF NOT EXISTS event_state_keys (
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-- Local numeric ID for the state key.
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event_state_key_nid BIGINT PRIMARY KEY DEFAULT nextval('event_state_key_nid_seq'),
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event_state_key TEXT NOT NULL CONSTRAINT event_state_key_unique UNIQUE
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);
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INSERT INTO event_state_keys (event_state_key_nid, event_state_key) VALUES
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(1, '') ON CONFLICT DO NOTHING;
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`
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// Same as insertEventTypeNIDSQL
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const insertEventStateKeyNIDSQL = "" +
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"INSERT INTO event_state_keys (event_state_key) VALUES ($1)" +
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" ON CONFLICT ON CONSTRAINT event_state_key_unique" +
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" DO UPDATE SET event_state_key = $1" +
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" RETURNING (event_state_key_nid)"
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const selectEventStateKeyNIDSQL = "" +
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"SELECT event_state_key_nid FROM event_state_keys WHERE event_state_key = $1"
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// Bulk lookup from string state key to numeric ID for that state key.
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// Takes an array of strings as the query parameter.
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const bulkSelectEventStateKeyNIDSQL = "" +
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"SELECT event_state_key, event_state_key_nid FROM event_state_keys" +
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" WHERE event_state_key = ANY($1)"
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type eventStateKeyStatements struct {
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insertEventStateKeyNIDStmt *sql.Stmt
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selectEventStateKeyNIDStmt *sql.Stmt
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bulkSelectEventStateKeyNIDStmt *sql.Stmt
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}
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func (s *eventStateKeyStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(eventStateKeysSchema)
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if err != nil {
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return
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}
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if s.insertEventStateKeyNIDStmt, err = db.Prepare(insertEventStateKeyNIDSQL); err != nil {
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return
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}
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if s.selectEventStateKeyNIDStmt, err = db.Prepare(selectEventStateKeyNIDSQL); err != nil {
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return
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}
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if s.bulkSelectEventStateKeyNIDStmt, err = db.Prepare(bulkSelectEventStateKeyNIDSQL); err != nil {
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return
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}
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return
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}
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func (s *eventStateKeyStatements) insertEventStateKeyNID(eventStateKey string) (types.EventStateKeyNID, error) {
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var eventStateKeyNID int64
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err := s.insertEventStateKeyNIDStmt.QueryRow(eventStateKey).Scan(&eventStateKeyNID)
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return types.EventStateKeyNID(eventStateKeyNID), err
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}
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func (s *eventStateKeyStatements) selectEventStateKeyNID(eventStateKey string) (types.EventStateKeyNID, error) {
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var eventStateKeyNID int64
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err := s.selectEventStateKeyNIDStmt.QueryRow(eventStateKey).Scan(&eventStateKeyNID)
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return types.EventStateKeyNID(eventStateKeyNID), err
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}
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func (s *eventStateKeyStatements) bulkSelectEventStateKeyNID(eventStateKeys []string) (map[string]types.EventStateKeyNID, error) {
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rows, err := s.bulkSelectEventStateKeyNIDStmt.Query(pq.StringArray(eventStateKeys))
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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result := make(map[string]types.EventStateKeyNID, len(eventStateKeys))
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for rows.Next() {
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var stateKey string
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var stateKeyNID int64
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if err := rows.Scan(&stateKey, &stateKeyNID); err != nil {
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return nil, err
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}
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result[stateKey] = types.EventStateKeyNID(stateKeyNID)
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}
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return result, nil
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}
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@ -10,9 +10,7 @@ import (
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type statements struct {
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partitionOffsetStatements
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eventTypeStatements
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insertEventStateKeyNIDStmt *sql.Stmt
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selectEventStateKeyNIDStmt *sql.Stmt
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bulkSelectEventStateKeyNIDStmt *sql.Stmt
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eventStateKeyStatements
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insertRoomNIDStmt *sql.Stmt
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selectRoomNIDStmt *sql.Stmt
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insertEventStmt *sql.Stmt
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@ -39,7 +37,7 @@ func (s *statements) prepare(db *sql.DB) error {
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return err
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}
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if err = s.prepareEventStateKeys(db); err != nil {
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if err = s.eventStateKeyStatements.prepare(db); err != nil {
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return err
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}
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@ -58,91 +56,6 @@ func (s *statements) prepare(db *sql.DB) error {
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return nil
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}
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func (s *statements) prepareEventStateKeys(db *sql.DB) (err error) {
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_, err = db.Exec(eventStateKeysSchema)
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if err != nil {
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return
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}
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if s.insertEventStateKeyNIDStmt, err = db.Prepare(insertEventStateKeyNIDSQL); err != nil {
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return
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}
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if s.selectEventStateKeyNIDStmt, err = db.Prepare(selectEventStateKeyNIDSQL); err != nil {
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return
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}
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if s.bulkSelectEventStateKeyNIDStmt, err = db.Prepare(bulkSelectEventStateKeyNIDSQL); err != nil {
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return
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}
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return
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}
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const eventStateKeysSchema = `
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-- Numeric versions of the event "state_key"s. State keys tend to be reused so
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-- assigning each string a numeric ID should reduce the amount of data that
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-- needs to be stored and fetched from the database.
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-- It also means that many operations can work with int64 arrays rather than
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-- string arrays which may help reduce GC pressure.
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-- Well known state keys are pre-assigned numeric IDs:
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-- 1 -> "" (the empty string)
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-- Other state keys are automatically assigned numeric IDs starting from 2**16.
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-- This leaves room to add more pre-assigned numeric IDs and clearly separates
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-- the automatically assigned IDs from the pre-assigned IDs.
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CREATE SEQUENCE IF NOT EXISTS event_state_key_nid_seq START 65536;
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CREATE TABLE IF NOT EXISTS event_state_keys (
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-- Local numeric ID for the state key.
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event_state_key_nid BIGINT PRIMARY KEY DEFAULT nextval('event_state_key_nid_seq'),
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event_state_key TEXT NOT NULL CONSTRAINT event_state_key_unique UNIQUE
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);
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INSERT INTO event_state_keys (event_state_key_nid, event_state_key) VALUES
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(1, '') ON CONFLICT DO NOTHING;
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`
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// Same as insertEventTypeNIDSQL
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const insertEventStateKeyNIDSQL = "" +
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"INSERT INTO event_state_keys (event_state_key) VALUES ($1)" +
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" ON CONFLICT ON CONSTRAINT event_state_key_unique" +
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" DO UPDATE SET event_state_key = $1" +
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" RETURNING (event_state_key_nid)"
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const selectEventStateKeyNIDSQL = "" +
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"SELECT event_state_key_nid FROM event_state_keys WHERE event_state_key = $1"
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// Bulk lookup from string state key to numeric ID for that state key.
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// Takes an array of strings as the query parameter.
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const bulkSelectEventStateKeyNIDSQL = "" +
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"SELECT event_state_key, event_state_key_nid FROM event_state_keys" +
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" WHERE event_state_key = ANY($1)"
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func (s *statements) insertEventStateKeyNID(eventStateKey string) (types.EventStateKeyNID, error) {
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var eventStateKeyNID int64
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err := s.insertEventStateKeyNIDStmt.QueryRow(eventStateKey).Scan(&eventStateKeyNID)
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return types.EventStateKeyNID(eventStateKeyNID), err
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}
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func (s *statements) selectEventStateKeyNID(eventStateKey string) (types.EventStateKeyNID, error) {
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var eventStateKeyNID int64
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err := s.selectEventStateKeyNIDStmt.QueryRow(eventStateKey).Scan(&eventStateKeyNID)
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return types.EventStateKeyNID(eventStateKeyNID), err
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}
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func (s *statements) bulkSelectEventStateKeyNID(eventStateKeys []string) (map[string]types.EventStateKeyNID, error) {
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rows, err := s.bulkSelectEventStateKeyNIDStmt.Query(pq.StringArray(eventStateKeys))
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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result := make(map[string]types.EventStateKeyNID, len(eventStateKeys))
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for rows.Next() {
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var stateKey string
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var stateKeyNID int64
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if err := rows.Scan(&stateKey, &stateKeyNID); err != nil {
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return nil, err
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}
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result[stateKey] = types.EventStateKeyNID(stateKeyNID)
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}
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return result, nil
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}
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func (s *statements) prepareRooms(db *sql.DB) (err error) {
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_, err = db.Exec(roomsSchema)
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if err != nil {
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