mirror of
https://github.com/1f349/dendrite.git
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Move the SQL into separate files for each table. (#7)
* Move partition offsets sql to a separate file * Move event types sql to a separate file * Move event state key sql to a separate file * Move room sql to a separate file * Move events sql to a separate file * Move event json sql to a separate file * Move state snapshot sql to a separate file * Move state block sql to a separate file
This commit is contained in:
Mark Haines
GitHub
parent
39264cbf4b
commit
450e0f1570
@ -0,0 +1,93 @@
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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 eventJSONSchema = `
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-- Stores the JSON for each event. This kept separate from the main events
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-- table to keep the rows in the main events table small.
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CREATE TABLE IF NOT EXISTS event_json (
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-- Local numeric ID for the event.
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event_nid BIGINT NOT NULL PRIMARY KEY,
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-- The JSON for the event.
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-- Stored as TEXT because this should be valid UTF-8.
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-- Not stored as a JSONB because we always just pull the entire event
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-- so there is no point in postgres parsing it.
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-- Not stored as JSON because we already validate the JSON in the server
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-- so there is no point in postgres validating it.
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-- TODO: Should we be compressing the events with Snappy or DEFLATE?
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event_json TEXT NOT NULL
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);
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`
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const insertEventJSONSQL = "" +
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"INSERT INTO event_json (event_nid, event_json) VALUES ($1, $2)" +
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" ON CONFLICT DO NOTHING"
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// Bulk event JSON lookup by numeric event ID.
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// Sort by the numeric event ID.
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// This means that we can use binary search to lookup by numeric event ID.
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const bulkSelectEventJSONSQL = "" +
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"SELECT event_nid, event_json FROM event_json" +
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" WHERE event_nid = ANY($1)" +
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" ORDER BY event_nid ASC"
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type eventJSONStatements struct {
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insertEventJSONStmt *sql.Stmt
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bulkSelectEventJSONStmt *sql.Stmt
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}
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func (s *eventJSONStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(eventJSONSchema)
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if err != nil {
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return
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}
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if s.insertEventJSONStmt, err = db.Prepare(insertEventJSONSQL); err != nil {
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return
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}
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if s.bulkSelectEventJSONStmt, err = db.Prepare(bulkSelectEventJSONSQL); 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 *eventJSONStatements) insertEventJSON(eventNID types.EventNID, eventJSON []byte) error {
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_, err := s.insertEventJSONStmt.Exec(int64(eventNID), eventJSON)
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return err
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}
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type eventJSONPair struct {
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EventNID types.EventNID
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EventJSON []byte
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}
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func (s *eventJSONStatements) bulkSelectEventJSON(eventNIDs []types.EventNID) ([]eventJSONPair, error) {
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nids := make([]int64, len(eventNIDs))
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for i := range eventNIDs {
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nids[i] = int64(eventNIDs[i])
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}
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rows, err := s.bulkSelectEventJSONStmt.Query(pq.Int64Array(nids))
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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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// We know that we will only get as many results as event NIDs
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// because of the unique constraint on event NIDs.
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// So we can allocate an array of the correct size now.
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// We might get fewer results than NIDs so we adjust the length of the slice before returning it.
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results := make([]eventJSONPair, len(eventNIDs))
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i := 0
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for ; rows.Next(); i++ {
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result := &results[i]
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var eventNID int64
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if err := rows.Scan(&eventNID, &result.EventJSON); err != nil {
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return nil, err
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}
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result.EventNID = types.EventNID(eventNID)
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}
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return results[:i], nil
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}
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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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@ -0,0 +1,94 @@
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package storage
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import (
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"database/sql"
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"github.com/matrix-org/dendrite/roomserver/types"
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)
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const eventTypesSchema = `
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-- Numeric versions of the event "type"s. Event types tend to be taken from a
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-- small common pool. Assigning each a numeric ID should reduce the amount of
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-- data that 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 event types are pre-assigned numeric IDs:
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-- 1 -> m.room.create
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-- 2 -> m.room.power_levels
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-- 3 -> m.room.join_rules
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-- 4 -> m.room.third_party_invite
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-- 5 -> m.room.member
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-- 6 -> m.room.redaction
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-- 7 -> m.room.history_visibility
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-- Picking well-known numeric IDs for the events types that require special
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-- attention during state conflict resolution means that we write that code
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-- using numeric constants.
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-- It also means that the numeric IDs for common event types should be
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-- consistent between different instances which might make ad-hoc debugging
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-- easier.
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-- Other event types 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_type_nid_seq START 65536;
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CREATE TABLE IF NOT EXISTS event_types (
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-- Local numeric ID for the event type.
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event_type_nid BIGINT PRIMARY KEY DEFAULT nextval('event_type_nid_seq'),
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-- The string event_type.
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event_type TEXT NOT NULL CONSTRAINT event_type_unique UNIQUE
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);
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INSERT INTO event_types (event_type_nid, event_type) VALUES
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(1, 'm.room.create'),
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(2, 'm.room.power_levels'),
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(3, 'm.room.join_rules'),
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(4, 'm.room.third_party_invite'),
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(5, 'm.room.member'),
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(6, 'm.room.redaction'),
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(7, 'm.room.history_visibility') ON CONFLICT DO NOTHING;
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`
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// Assign a new numeric event type ID.
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// The usual case is that the event type is not in the database.
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// In that case the ID will be assigned using the next value from the sequence.
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// We use `RETURNING` to tell postgres to return the assigned ID.
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// But it's possible that the type was added in a query that raced with us.
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// This will result in a conflict on the event_type_unique constraint.
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// We peform a update that does nothing rather that doing nothing at all because
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// postgres won't return anything unless we touch a row in the table.
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const insertEventTypeNIDSQL = "" +
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"INSERT INTO event_types (event_type) VALUES ($1)" +
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" ON CONFLICT ON CONSTRAINT event_type_unique" +
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" DO UPDATE SET event_type = $1" +
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" RETURNING (event_type_nid)"
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const selectEventTypeNIDSQL = "" +
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"SELECT event_type_nid FROM event_types WHERE event_type = $1"
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type eventTypeStatements struct {
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insertEventTypeNIDStmt *sql.Stmt
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selectEventTypeNIDStmt *sql.Stmt
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}
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func (s *eventTypeStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(eventTypesSchema)
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if err != nil {
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return
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}
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if s.insertEventTypeNIDStmt, err = db.Prepare(insertEventTypeNIDSQL); err != nil {
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return
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}
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if s.selectEventTypeNIDStmt, err = db.Prepare(selectEventTypeNIDSQL); 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 *eventTypeStatements) insertEventTypeNID(eventType string) (types.EventTypeNID, error) {
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var eventTypeNID int64
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err := s.insertEventTypeNIDStmt.QueryRow(eventType).Scan(&eventTypeNID)
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return types.EventTypeNID(eventTypeNID), err
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}
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func (s *eventTypeStatements) selectEventTypeNID(eventType string) (types.EventTypeNID, error) {
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var eventTypeNID int64
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err := s.selectEventTypeNIDStmt.QueryRow(eventType).Scan(&eventTypeNID)
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return types.EventTypeNID(eventTypeNID), err
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}
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@ -0,0 +1,178 @@
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package storage
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import (
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"database/sql"
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"fmt"
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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 eventsSchema = `
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-- The events table holds metadata for each event, the actual JSON is stored
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-- separately to keep the size of the rows small.
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CREATE SEQUENCE IF NOT EXISTS event_nid_seq;
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CREATE TABLE IF NOT EXISTS events (
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-- Local numeric ID for the event.
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event_nid BIGINT PRIMARY KEY DEFAULT nextval('event_nid_seq'),
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-- Local numeric ID for the room the event is in.
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-- This is never 0.
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room_nid BIGINT NOT NULL,
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-- Local numeric ID for the type of the event.
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-- This is never 0.
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event_type_nid BIGINT NOT NULL,
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-- Local numeric ID for the state_key of the event
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-- This is 0 if the event is not a state event.
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event_state_key_nid BIGINT NOT NULL,
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-- Local numeric ID for the state at the event.
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-- This is 0 if we don't know the state at the event.
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-- If the state is not 0 then this event is part of the contiguous
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-- part of the event graph
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-- Since many different events can have the same state we store the
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-- state into a separate state table and refer to it by numeric ID.
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state_snapshot_nid bigint NOT NULL DEFAULT 0,
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-- The textual event id.
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-- Used to lookup the numeric ID when processing requests.
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-- Needed for state resolution.
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-- An event may only appear in this table once.
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event_id TEXT NOT NULL CONSTRAINT event_id_unique UNIQUE,
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-- The sha256 reference hash for the event.
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-- Needed for setting reference hashes when sending new events.
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reference_sha256 BYTEA NOT NULL,
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-- A list of numeric IDs for events that can authenticate this event.
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auth_event_nids BIGINT[] NOT NULL
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);
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`
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const insertEventSQL = "" +
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"INSERT INTO events (room_nid, event_type_nid, event_state_key_nid, event_id, reference_sha256, auth_event_nids)" +
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" VALUES ($1, $2, $3, $4, $5, $6)" +
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" ON CONFLICT ON CONSTRAINT event_id_unique" +
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" DO UPDATE SET event_id = $1" +
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" RETURNING event_nid, state_snapshot_nid"
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// Bulk lookup of events by string ID.
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// Sort by the numeric IDs for event type and state key.
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// This means we can use binary search to lookup entries by type and state key.
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const bulkSelectStateEventByIDSQL = "" +
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"SELECT event_type_nid, event_state_key_nid, event_nid FROM events" +
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" WHERE event_id = ANY($1)" +
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" ORDER BY event_type_nid, event_state_key_nid ASC"
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const bulkSelectStateAtEventByIDSQL = "" +
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"SELECT event_type_nid, event_state_key_nid, event_nid, state_snapshot_nid FROM events" +
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" WHERE event_id = ANY($1)"
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const updateEventStateSQL = "" +
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"UPDATE events SET state_snapshot_nid = $2 WHERE event_nid = $1"
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type eventStatements struct {
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insertEventStmt *sql.Stmt
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bulkSelectStateEventByIDStmt *sql.Stmt
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bulkSelectStateAtEventByIDStmt *sql.Stmt
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updateEventStateStmt *sql.Stmt
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}
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func (s *eventStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(eventsSchema)
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if err != nil {
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return
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}
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if s.insertEventStmt, err = db.Prepare(insertEventSQL); err != nil {
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return
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}
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if s.bulkSelectStateEventByIDStmt, err = db.Prepare(bulkSelectStateEventByIDSQL); err != nil {
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return
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}
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if s.bulkSelectStateAtEventByIDStmt, err = db.Prepare(bulkSelectStateAtEventByIDSQL); err != nil {
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return
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}
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if s.updateEventStateStmt, err = db.Prepare(updateEventStateSQL); 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 *eventStatements) insertEvent(
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roomNID types.RoomNID, eventTypeNID types.EventTypeNID, eventStateKeyNID types.EventStateKeyNID,
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eventID string,
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referenceSHA256 []byte,
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authEventNIDs []types.EventNID,
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) (types.EventNID, types.StateSnapshotNID, error) {
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nids := make([]int64, len(authEventNIDs))
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for i := range authEventNIDs {
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nids[i] = int64(authEventNIDs[i])
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}
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var eventNID int64
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var stateNID int64
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err := s.insertEventStmt.QueryRow(
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int64(roomNID), int64(eventTypeNID), int64(eventStateKeyNID), eventID, referenceSHA256,
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pq.Int64Array(nids),
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).Scan(&eventNID, &stateNID)
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return types.EventNID(eventNID), types.StateSnapshotNID(stateNID), err
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}
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func (s *eventStatements) bulkSelectStateEventByID(eventIDs []string) ([]types.StateEntry, error) {
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rows, err := s.bulkSelectStateEventByIDStmt.Query(pq.StringArray(eventIDs))
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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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// We know that we will only get as many results as event IDs
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// because of the unique constraint on event IDs.
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// So we can allocate an array of the correct size now.
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// We might get fewer results than IDs so we adjust the length of the slice before returning it.
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results := make([]types.StateEntry, len(eventIDs))
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i := 0
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for ; rows.Next(); i++ {
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result := &results[i]
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if err = rows.Scan(
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&result.EventNID,
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&result.EventTypeNID,
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&result.EventStateKeyNID,
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); err != nil {
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return nil, err
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}
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}
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if i != len(eventIDs) {
|
||||
// If there are fewer rows returned than IDs then we were asked to lookup event IDs we don't have.
|
||||
// We don't know which ones were missing because we don't return the string IDs in the query.
|
||||
// However it should be possible debug this by replaying queries or entries from the input kafka logs.
|
||||
// If this turns out to be impossible and we do need the debug information here, it would be better
|
||||
// to do it as a separate query rather than slowing down/complicating the common case.
|
||||
return nil, fmt.Errorf("storage: state event IDs missing from the database (%d != %d)", i, len(eventIDs))
|
||||
}
|
||||
return results, err
|
||||
}
|
||||
|
||||
func (s *eventStatements) bulkSelectStateAtEventByID(eventIDs []string) ([]types.StateAtEvent, error) {
|
||||
rows, err := s.bulkSelectStateAtEventByIDStmt.Query(pq.StringArray(eventIDs))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
results := make([]types.StateAtEvent, len(eventIDs))
|
||||
i := 0
|
||||
for ; rows.Next(); i++ {
|
||||
result := &results[i]
|
||||
if err = rows.Scan(
|
||||
&result.EventNID,
|
||||
&result.EventTypeNID,
|
||||
&result.EventStateKeyNID,
|
||||
&result.BeforeStateSnapshotNID,
|
||||
); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if result.BeforeStateSnapshotNID == 0 {
|
||||
return nil, fmt.Errorf("storage: missing state for event NID %d", result.EventNID)
|
||||
}
|
||||
}
|
||||
if i != len(eventIDs) {
|
||||
return nil, fmt.Errorf("storage: event IDs missing from the database (%d != %d)", i, len(eventIDs))
|
||||
}
|
||||
return results, err
|
||||
}
|
||||
|
||||
func (s *eventStatements) updateEventState(eventNID types.EventNID, stateNID types.StateSnapshotNID) error {
|
||||
_, err := s.updateEventStateStmt.Exec(int64(eventNID), int64(stateNID))
|
||||
return err
|
||||
}
|
||||
@ -0,0 +1,67 @@
|
||||
package storage
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"github.com/matrix-org/dendrite/roomserver/types"
|
||||
)
|
||||
|
||||
const partitionOffsetsSchema = `
|
||||
-- The offsets that the server has processed up to.
|
||||
CREATE TABLE IF NOT EXISTS partition_offsets (
|
||||
-- The name of the topic.
|
||||
topic TEXT NOT NULL,
|
||||
-- The 32-bit partition ID
|
||||
partition INTEGER NOT NULL,
|
||||
-- The 64-bit offset.
|
||||
partition_offset BIGINT NOT NULL,
|
||||
CONSTRAINT topic_partition_unique UNIQUE (topic, partition)
|
||||
);
|
||||
`
|
||||
|
||||
const selectPartitionOffsetsSQL = "" +
|
||||
"SELECT partition, partition_offset FROM partition_offsets WHERE topic = $1"
|
||||
|
||||
const upsertPartitionOffsetsSQL = "" +
|
||||
"INSERT INTO partition_offsets (topic, partition, partition_offset) VALUES ($1, $2, $3)" +
|
||||
" ON CONFLICT ON CONSTRAINT topic_partition_unique" +
|
||||
" DO UPDATE SET partition_offset = $3"
|
||||
|
||||
type partitionOffsetStatements struct {
|
||||
selectPartitionOffsetsStmt *sql.Stmt
|
||||
upsertPartitionOffsetStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func (s *partitionOffsetStatements) prepare(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(partitionOffsetsSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectPartitionOffsetsStmt, err = db.Prepare(selectPartitionOffsetsSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.upsertPartitionOffsetStmt, err = db.Prepare(upsertPartitionOffsetsSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *partitionOffsetStatements) selectPartitionOffsets(topic string) ([]types.PartitionOffset, error) {
|
||||
rows, err := s.selectPartitionOffsetsStmt.Query(topic)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
var results []types.PartitionOffset
|
||||
for rows.Next() {
|
||||
var offset types.PartitionOffset
|
||||
if err := rows.Scan(&offset.Partition, &offset.Offset); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return results, nil
|
||||
}
|
||||
|
||||
func (s *partitionOffsetStatements) upsertPartitionOffset(topic string, partition int32, offset int64) error {
|
||||
_, err := s.upsertPartitionOffsetStmt.Exec(topic, partition, offset)
|
||||
return err
|
||||
}
|
||||
@ -0,0 +1,57 @@
|
||||
package storage
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"github.com/matrix-org/dendrite/roomserver/types"
|
||||
)
|
||||
|
||||
const roomsSchema = `
|
||||
CREATE SEQUENCE IF NOT EXISTS room_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS rooms (
|
||||
-- Local numeric ID for the room.
|
||||
room_nid BIGINT PRIMARY KEY DEFAULT nextval('room_nid_seq'),
|
||||
-- Textual ID for the room.
|
||||
room_id TEXT NOT NULL CONSTRAINT room_id_unique UNIQUE
|
||||
);
|
||||
`
|
||||
|
||||
// Same as insertEventTypeNIDSQL
|
||||
const insertRoomNIDSQL = "" +
|
||||
"INSERT INTO rooms (room_id) VALUES ($1)" +
|
||||
" ON CONFLICT ON CONSTRAINT room_id_unique" +
|
||||
" DO UPDATE SET room_id = $1" +
|
||||
" RETURNING (room_nid)"
|
||||
|
||||
const selectRoomNIDSQL = "" +
|
||||
"SELECT room_nid FROM rooms WHERE room_id = $1"
|
||||
|
||||
type roomStatements struct {
|
||||
insertRoomNIDStmt *sql.Stmt
|
||||
selectRoomNIDStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func (s *roomStatements) prepare(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(roomsSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertRoomNIDStmt, err = db.Prepare(insertRoomNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectRoomNIDStmt, err = db.Prepare(selectRoomNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *roomStatements) insertRoomNID(roomID string) (types.RoomNID, error) {
|
||||
var roomNID int64
|
||||
err := s.insertRoomNIDStmt.QueryRow(roomID).Scan(&roomNID)
|
||||
return types.RoomNID(roomNID), err
|
||||
}
|
||||
|
||||
func (s *roomStatements) selectRoomNID(roomID string) (types.RoomNID, error) {
|
||||
var roomNID int64
|
||||
err := s.selectRoomNIDStmt.QueryRow(roomID).Scan(&roomNID)
|
||||
return types.RoomNID(roomNID), err
|
||||
}
|
||||
@ -2,785 +2,53 @@ package storage
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"github.com/lib/pq"
|
||||
"github.com/matrix-org/dendrite/roomserver/types"
|
||||
)
|
||||
|
||||
type statements struct {
|
||||
selectPartitionOffsetsStmt *sql.Stmt
|
||||
upsertPartitionOffsetStmt *sql.Stmt
|
||||
insertEventTypeNIDStmt *sql.Stmt
|
||||
selectEventTypeNIDStmt *sql.Stmt
|
||||
insertEventStateKeyNIDStmt *sql.Stmt
|
||||
selectEventStateKeyNIDStmt *sql.Stmt
|
||||
bulkSelectEventStateKeyNIDStmt *sql.Stmt
|
||||
insertRoomNIDStmt *sql.Stmt
|
||||
selectRoomNIDStmt *sql.Stmt
|
||||
insertEventStmt *sql.Stmt
|
||||
bulkSelectStateEventByIDStmt *sql.Stmt
|
||||
bulkSelectStateAtEventByIDStmt *sql.Stmt
|
||||
updateEventStateStmt *sql.Stmt
|
||||
insertEventJSONStmt *sql.Stmt
|
||||
bulkSelectEventJSONStmt *sql.Stmt
|
||||
insertStateStmt *sql.Stmt
|
||||
bulkSelectStateBlockNIDsStmt *sql.Stmt
|
||||
insertStateDataStmt *sql.Stmt
|
||||
selectNextStateBlockNIDStmt *sql.Stmt
|
||||
bulkSelectStateDataEntriesStmt *sql.Stmt
|
||||
partitionOffsetStatements
|
||||
eventTypeStatements
|
||||
eventStateKeyStatements
|
||||
roomStatements
|
||||
eventStatements
|
||||
eventJSONStatements
|
||||
stateSnapshotStatements
|
||||
stateBlockStatements
|
||||
}
|
||||
|
||||
func (s *statements) prepare(db *sql.DB) error {
|
||||
var err error
|
||||
|
||||
if err = s.preparePartitionOffsets(db); err != nil {
|
||||
if err = s.partitionOffsetStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.prepareEventTypes(db); err != nil {
|
||||
if err = s.eventTypeStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.prepareEventStateKeys(db); err != nil {
|
||||
if err = s.eventStateKeyStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.prepareRooms(db); err != nil {
|
||||
if err = s.roomStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.prepareEvents(db); err != nil {
|
||||
if err = s.eventStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.prepareEventJSON(db); err != nil {
|
||||
if err = s.eventJSONStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.stateSnapshotStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = s.stateBlockStatements.prepare(db); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *statements) preparePartitionOffsets(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(partitionOffsetsSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectPartitionOffsetsStmt, err = db.Prepare(selectPartitionOffsetsSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.upsertPartitionOffsetStmt, err = db.Prepare(upsertPartitionOffsetsSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
const partitionOffsetsSchema = `
|
||||
-- The offsets that the server has processed up to.
|
||||
CREATE TABLE IF NOT EXISTS partition_offsets (
|
||||
-- The name of the topic.
|
||||
topic TEXT NOT NULL,
|
||||
-- The 32-bit partition ID
|
||||
partition INTEGER NOT NULL,
|
||||
-- The 64-bit offset.
|
||||
partition_offset BIGINT NOT NULL,
|
||||
CONSTRAINT topic_partition_unique UNIQUE (topic, partition)
|
||||
);
|
||||
`
|
||||
|
||||
const selectPartitionOffsetsSQL = "" +
|
||||
"SELECT partition, partition_offset FROM partition_offsets WHERE topic = $1"
|
||||
|
||||
const upsertPartitionOffsetsSQL = "" +
|
||||
"INSERT INTO partition_offsets (topic, partition, partition_offset) VALUES ($1, $2, $3)" +
|
||||
" ON CONFLICT ON CONSTRAINT topic_partition_unique" +
|
||||
" DO UPDATE SET partition_offset = $3"
|
||||
|
||||
func (s *statements) selectPartitionOffsets(topic string) ([]types.PartitionOffset, error) {
|
||||
rows, err := s.selectPartitionOffsetsStmt.Query(topic)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
var results []types.PartitionOffset
|
||||
for rows.Next() {
|
||||
var offset types.PartitionOffset
|
||||
if err := rows.Scan(&offset.Partition, &offset.Offset); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return results, nil
|
||||
}
|
||||
|
||||
func (s *statements) upsertPartitionOffset(topic string, partition int32, offset int64) error {
|
||||
_, err := s.upsertPartitionOffsetStmt.Exec(topic, partition, offset)
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *statements) prepareEventTypes(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(eventTypesSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertEventTypeNIDStmt, err = db.Prepare(insertEventTypeNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectEventTypeNIDStmt, err = db.Prepare(selectEventTypeNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
const eventTypesSchema = `
|
||||
-- Numeric versions of the event "type"s. Event types tend to be taken from a
|
||||
-- small common pool. Assigning each a numeric ID should reduce the amount of
|
||||
-- data that needs to be stored and fetched from the database.
|
||||
-- It also means that many operations can work with int64 arrays rather than
|
||||
-- string arrays which may help reduce GC pressure.
|
||||
-- Well known event types are pre-assigned numeric IDs:
|
||||
-- 1 -> m.room.create
|
||||
-- 2 -> m.room.power_levels
|
||||
-- 3 -> m.room.join_rules
|
||||
-- 4 -> m.room.third_party_invite
|
||||
-- 5 -> m.room.member
|
||||
-- 6 -> m.room.redaction
|
||||
-- 7 -> m.room.history_visibility
|
||||
-- Picking well-known numeric IDs for the events types that require special
|
||||
-- attention during state conflict resolution means that we write that code
|
||||
-- using numeric constants.
|
||||
-- It also means that the numeric IDs for common event types should be
|
||||
-- consistent between different instances which might make ad-hoc debugging
|
||||
-- easier.
|
||||
-- Other event types are automatically assigned numeric IDs starting from 2**16.
|
||||
-- This leaves room to add more pre-assigned numeric IDs and clearly separates
|
||||
-- the automatically assigned IDs from the pre-assigned IDs.
|
||||
CREATE SEQUENCE IF NOT EXISTS event_type_nid_seq START 65536;
|
||||
CREATE TABLE IF NOT EXISTS event_types (
|
||||
-- Local numeric ID for the event type.
|
||||
event_type_nid BIGINT PRIMARY KEY DEFAULT nextval('event_type_nid_seq'),
|
||||
-- The string event_type.
|
||||
event_type TEXT NOT NULL CONSTRAINT event_type_unique UNIQUE
|
||||
);
|
||||
INSERT INTO event_types (event_type_nid, event_type) VALUES
|
||||
(1, 'm.room.create'),
|
||||
(2, 'm.room.power_levels'),
|
||||
(3, 'm.room.join_rules'),
|
||||
(4, 'm.room.third_party_invite'),
|
||||
(5, 'm.room.member'),
|
||||
(6, 'm.room.redaction'),
|
||||
(7, 'm.room.history_visibility') ON CONFLICT DO NOTHING;
|
||||
`
|
||||
|
||||
// Assign a new numeric event type ID.
|
||||
// The usual case is that the event type is not in the database.
|
||||
// In that case the ID will be assigned using the next value from the sequence.
|
||||
// We use `RETURNING` to tell postgres to return the assigned ID.
|
||||
// But it's possible that the type was added in a query that raced with us.
|
||||
// This will result in a conflict on the event_type_unique constraint.
|
||||
// We peform a update that does nothing rather that doing nothing at all because
|
||||
// postgres won't return anything unless we touch a row in the table.
|
||||
const insertEventTypeNIDSQL = "" +
|
||||
"INSERT INTO event_types (event_type) VALUES ($1)" +
|
||||
" ON CONFLICT ON CONSTRAINT event_type_unique" +
|
||||
" DO UPDATE SET event_type = $1" +
|
||||
" RETURNING (event_type_nid)"
|
||||
|
||||
const selectEventTypeNIDSQL = "" +
|
||||
"SELECT event_type_nid FROM event_types WHERE event_type = $1"
|
||||
|
||||
func (s *statements) insertEventTypeNID(eventType string) (types.EventTypeNID, error) {
|
||||
var eventTypeNID int64
|
||||
err := s.insertEventTypeNIDStmt.QueryRow(eventType).Scan(&eventTypeNID)
|
||||
return types.EventTypeNID(eventTypeNID), err
|
||||
}
|
||||
|
||||
func (s *statements) selectEventTypeNID(eventType string) (types.EventTypeNID, error) {
|
||||
var eventTypeNID int64
|
||||
err := s.selectEventTypeNIDStmt.QueryRow(eventType).Scan(&eventTypeNID)
|
||||
return types.EventTypeNID(eventTypeNID), err
|
||||
}
|
||||
|
||||
func (s *statements) prepareEventStateKeys(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(eventStateKeysSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertEventStateKeyNIDStmt, err = db.Prepare(insertEventStateKeyNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectEventStateKeyNIDStmt, err = db.Prepare(selectEventStateKeyNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectEventStateKeyNIDStmt, err = db.Prepare(bulkSelectEventStateKeyNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
const eventStateKeysSchema = `
|
||||
-- Numeric versions of the event "state_key"s. State keys tend to be reused so
|
||||
-- assigning each string a numeric ID should reduce the amount of data that
|
||||
-- needs to be stored and fetched from the database.
|
||||
-- It also means that many operations can work with int64 arrays rather than
|
||||
-- string arrays which may help reduce GC pressure.
|
||||
-- Well known state keys are pre-assigned numeric IDs:
|
||||
-- 1 -> "" (the empty string)
|
||||
-- Other state keys are automatically assigned numeric IDs starting from 2**16.
|
||||
-- This leaves room to add more pre-assigned numeric IDs and clearly separates
|
||||
-- the automatically assigned IDs from the pre-assigned IDs.
|
||||
CREATE SEQUENCE IF NOT EXISTS event_state_key_nid_seq START 65536;
|
||||
CREATE TABLE IF NOT EXISTS event_state_keys (
|
||||
-- Local numeric ID for the state key.
|
||||
event_state_key_nid BIGINT PRIMARY KEY DEFAULT nextval('event_state_key_nid_seq'),
|
||||
event_state_key TEXT NOT NULL CONSTRAINT event_state_key_unique UNIQUE
|
||||
);
|
||||
INSERT INTO event_state_keys (event_state_key_nid, event_state_key) VALUES
|
||||
(1, '') ON CONFLICT DO NOTHING;
|
||||
`
|
||||
|
||||
// Same as insertEventTypeNIDSQL
|
||||
const insertEventStateKeyNIDSQL = "" +
|
||||
"INSERT INTO event_state_keys (event_state_key) VALUES ($1)" +
|
||||
" ON CONFLICT ON CONSTRAINT event_state_key_unique" +
|
||||
" DO UPDATE SET event_state_key = $1" +
|
||||
" RETURNING (event_state_key_nid)"
|
||||
|
||||
const selectEventStateKeyNIDSQL = "" +
|
||||
"SELECT event_state_key_nid FROM event_state_keys WHERE event_state_key = $1"
|
||||
|
||||
// Bulk lookup from string state key to numeric ID for that state key.
|
||||
// Takes an array of strings as the query parameter.
|
||||
const bulkSelectEventStateKeyNIDSQL = "" +
|
||||
"SELECT event_state_key, event_state_key_nid FROM event_state_keys" +
|
||||
" WHERE event_state_key = ANY($1)"
|
||||
|
||||
func (s *statements) insertEventStateKeyNID(eventStateKey string) (types.EventStateKeyNID, error) {
|
||||
var eventStateKeyNID int64
|
||||
err := s.insertEventStateKeyNIDStmt.QueryRow(eventStateKey).Scan(&eventStateKeyNID)
|
||||
return types.EventStateKeyNID(eventStateKeyNID), err
|
||||
}
|
||||
|
||||
func (s *statements) selectEventStateKeyNID(eventStateKey string) (types.EventStateKeyNID, error) {
|
||||
var eventStateKeyNID int64
|
||||
err := s.selectEventStateKeyNIDStmt.QueryRow(eventStateKey).Scan(&eventStateKeyNID)
|
||||
return types.EventStateKeyNID(eventStateKeyNID), err
|
||||
}
|
||||
|
||||
func (s *statements) bulkSelectEventStateKeyNID(eventStateKeys []string) (map[string]types.EventStateKeyNID, error) {
|
||||
rows, err := s.bulkSelectEventStateKeyNIDStmt.Query(pq.StringArray(eventStateKeys))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
|
||||
result := make(map[string]types.EventStateKeyNID, len(eventStateKeys))
|
||||
for rows.Next() {
|
||||
var stateKey string
|
||||
var stateKeyNID int64
|
||||
if err := rows.Scan(&stateKey, &stateKeyNID); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
result[stateKey] = types.EventStateKeyNID(stateKeyNID)
|
||||
}
|
||||
return result, nil
|
||||
}
|
||||
|
||||
func (s *statements) prepareRooms(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(roomsSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertRoomNIDStmt, err = db.Prepare(insertRoomNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectRoomNIDStmt, err = db.Prepare(selectRoomNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
const roomsSchema = `
|
||||
CREATE SEQUENCE IF NOT EXISTS room_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS rooms (
|
||||
-- Local numeric ID for the room.
|
||||
room_nid BIGINT PRIMARY KEY DEFAULT nextval('room_nid_seq'),
|
||||
-- Textual ID for the room.
|
||||
room_id TEXT NOT NULL CONSTRAINT room_id_unique UNIQUE
|
||||
);
|
||||
`
|
||||
|
||||
// Same as insertEventTypeNIDSQL
|
||||
const insertRoomNIDSQL = "" +
|
||||
"INSERT INTO rooms (room_id) VALUES ($1)" +
|
||||
" ON CONFLICT ON CONSTRAINT room_id_unique" +
|
||||
" DO UPDATE SET room_id = $1" +
|
||||
" RETURNING (room_nid)"
|
||||
|
||||
const selectRoomNIDSQL = "" +
|
||||
"SELECT room_nid FROM rooms WHERE room_id = $1"
|
||||
|
||||
func (s *statements) insertRoomNID(roomID string) (types.RoomNID, error) {
|
||||
var roomNID int64
|
||||
err := s.insertRoomNIDStmt.QueryRow(roomID).Scan(&roomNID)
|
||||
return types.RoomNID(roomNID), err
|
||||
}
|
||||
|
||||
func (s *statements) selectRoomNID(roomID string) (types.RoomNID, error) {
|
||||
var roomNID int64
|
||||
err := s.selectRoomNIDStmt.QueryRow(roomID).Scan(&roomNID)
|
||||
return types.RoomNID(roomNID), err
|
||||
}
|
||||
|
||||
const eventsSchema = `
|
||||
-- The events table holds metadata for each event, the actual JSON is stored
|
||||
-- separately to keep the size of the rows small.
|
||||
CREATE SEQUENCE IF NOT EXISTS event_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS events (
|
||||
-- Local numeric ID for the event.
|
||||
event_nid BIGINT PRIMARY KEY DEFAULT nextval('event_nid_seq'),
|
||||
-- Local numeric ID for the room the event is in.
|
||||
-- This is never 0.
|
||||
room_nid BIGINT NOT NULL,
|
||||
-- Local numeric ID for the type of the event.
|
||||
-- This is never 0.
|
||||
event_type_nid BIGINT NOT NULL,
|
||||
-- Local numeric ID for the state_key of the event
|
||||
-- This is 0 if the event is not a state event.
|
||||
event_state_key_nid BIGINT NOT NULL,
|
||||
-- Local numeric ID for the state at the event.
|
||||
-- This is 0 if we don't know the state at the event.
|
||||
-- If the state is not 0 then this event is part of the contiguous
|
||||
-- part of the event graph
|
||||
-- Since many different events can have the same state we store the
|
||||
-- state into a separate state table and refer to it by numeric ID.
|
||||
state_snapshot_nid bigint NOT NULL DEFAULT 0,
|
||||
-- The textual event id.
|
||||
-- Used to lookup the numeric ID when processing requests.
|
||||
-- Needed for state resolution.
|
||||
-- An event may only appear in this table once.
|
||||
event_id TEXT NOT NULL CONSTRAINT event_id_unique UNIQUE,
|
||||
-- The sha256 reference hash for the event.
|
||||
-- Needed for setting reference hashes when sending new events.
|
||||
reference_sha256 BYTEA NOT NULL,
|
||||
-- A list of numeric IDs for events that can authenticate this event.
|
||||
auth_event_nids BIGINT[] NOT NULL
|
||||
);
|
||||
`
|
||||
|
||||
const insertEventSQL = "" +
|
||||
"INSERT INTO events (room_nid, event_type_nid, event_state_key_nid, event_id, reference_sha256, auth_event_nids)" +
|
||||
" VALUES ($1, $2, $3, $4, $5, $6)" +
|
||||
" ON CONFLICT ON CONSTRAINT event_id_unique" +
|
||||
" DO UPDATE SET event_id = $1" +
|
||||
" RETURNING event_nid, state_snapshot_nid"
|
||||
|
||||
// Bulk lookup of events by string ID.
|
||||
// Sort by the numeric IDs for event type and state key.
|
||||
// This means we can use binary search to lookup entries by type and state key.
|
||||
const bulkSelectStateEventByIDSQL = "" +
|
||||
"SELECT event_type_nid, event_state_key_nid, event_nid FROM events" +
|
||||
" WHERE event_id = ANY($1)" +
|
||||
" ORDER BY event_type_nid, event_state_key_nid ASC"
|
||||
|
||||
const bulkSelectStateAtEventByIDSQL = "" +
|
||||
"SELECT event_type_nid, event_state_key_nid, event_nid, state_snapshot_nid FROM events" +
|
||||
" WHERE event_id = ANY($1)"
|
||||
|
||||
const updateEventStateSQL = "" +
|
||||
"UPDATE events SET state_snapshot_nid = $2 WHERE event_nid = $1"
|
||||
|
||||
func (s *statements) prepareEvents(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(eventsSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertEventStmt, err = db.Prepare(insertEventSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectStateEventByIDStmt, err = db.Prepare(bulkSelectStateEventByIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectStateAtEventByIDStmt, err = db.Prepare(bulkSelectStateAtEventByIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.updateEventStateStmt, err = db.Prepare(updateEventStateSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *statements) insertEvent(
|
||||
roomNID types.RoomNID, eventTypeNID types.EventTypeNID, eventStateKeyNID types.EventStateKeyNID,
|
||||
eventID string,
|
||||
referenceSHA256 []byte,
|
||||
authEventNIDs []types.EventNID,
|
||||
) (types.EventNID, types.StateSnapshotNID, error) {
|
||||
nids := make([]int64, len(authEventNIDs))
|
||||
for i := range authEventNIDs {
|
||||
nids[i] = int64(authEventNIDs[i])
|
||||
}
|
||||
var eventNID int64
|
||||
var stateNID int64
|
||||
err := s.insertEventStmt.QueryRow(
|
||||
int64(roomNID), int64(eventTypeNID), int64(eventStateKeyNID), eventID, referenceSHA256,
|
||||
pq.Int64Array(nids),
|
||||
).Scan(&eventNID, &stateNID)
|
||||
return types.EventNID(eventNID), types.StateSnapshotNID(stateNID), err
|
||||
}
|
||||
|
||||
func (s *statements) bulkSelectStateEventByID(eventIDs []string) ([]types.StateEntry, error) {
|
||||
rows, err := s.bulkSelectStateEventByIDStmt.Query(pq.StringArray(eventIDs))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
// We know that we will only get as many results as event IDs
|
||||
// because of the unique constraint on event IDs.
|
||||
// So we can allocate an array of the correct size now.
|
||||
// We might get fewer results than IDs so we adjust the length of the slice before returning it.
|
||||
results := make([]types.StateEntry, len(eventIDs))
|
||||
i := 0
|
||||
for ; rows.Next(); i++ {
|
||||
result := &results[i]
|
||||
if err = rows.Scan(
|
||||
&result.EventNID,
|
||||
&result.EventTypeNID,
|
||||
&result.EventStateKeyNID,
|
||||
); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
if i != len(eventIDs) {
|
||||
// If there are fewer rows returned than IDs then we were asked to lookup event IDs we don't have.
|
||||
// We don't know which ones were missing because we don't return the string IDs in the query.
|
||||
// However it should be possible debug this by replaying queries or entries from the input kafka logs.
|
||||
// If this turns out to be impossible and we do need the debug information here, it would be better
|
||||
// to do it as a separate query rather than slowing down/complicating the common case.
|
||||
return nil, fmt.Errorf("storage: state event IDs missing from the database (%d != %d)", i, len(eventIDs))
|
||||
}
|
||||
return results, err
|
||||
}
|
||||
|
||||
func (s *statements) bulkSelectStateAtEventByID(eventIDs []string) ([]types.StateAtEvent, error) {
|
||||
rows, err := s.bulkSelectStateAtEventByIDStmt.Query(pq.StringArray(eventIDs))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
results := make([]types.StateAtEvent, len(eventIDs))
|
||||
i := 0
|
||||
for ; rows.Next(); i++ {
|
||||
result := &results[i]
|
||||
if err = rows.Scan(
|
||||
&result.EventNID,
|
||||
&result.EventTypeNID,
|
||||
&result.EventStateKeyNID,
|
||||
&result.BeforeStateSnapshotNID,
|
||||
); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if result.BeforeStateSnapshotNID == 0 {
|
||||
return nil, fmt.Errorf("storage: missing state for event NID %d", result.EventNID)
|
||||
}
|
||||
}
|
||||
if i != len(eventIDs) {
|
||||
return nil, fmt.Errorf("storage: event IDs missing from the database (%d != %d)", i, len(eventIDs))
|
||||
}
|
||||
return results, err
|
||||
}
|
||||
|
||||
func (s *statements) updateEventState(eventNID types.EventNID, stateNID types.StateSnapshotNID) error {
|
||||
_, err := s.updateEventStateStmt.Exec(int64(eventNID), int64(stateNID))
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *statements) prepareEventJSON(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(eventJSONSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertEventJSONStmt, err = db.Prepare(insertEventJSONSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectEventJSONStmt, err = db.Prepare(bulkSelectEventJSONSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
const eventJSONSchema = `
|
||||
-- Stores the JSON for each event. This kept separate from the main events
|
||||
-- table to keep the rows in the main events table small.
|
||||
CREATE TABLE IF NOT EXISTS event_json (
|
||||
-- Local numeric ID for the event.
|
||||
event_nid BIGINT NOT NULL PRIMARY KEY,
|
||||
-- The JSON for the event.
|
||||
-- Stored as TEXT because this should be valid UTF-8.
|
||||
-- Not stored as a JSONB because we always just pull the entire event
|
||||
-- so there is no point in postgres parsing it.
|
||||
-- Not stored as JSON because we already validate the JSON in the server
|
||||
-- so there is no point in postgres validating it.
|
||||
-- TODO: Should we be compressing the events with Snappy or DEFLATE?
|
||||
event_json TEXT NOT NULL
|
||||
);
|
||||
`
|
||||
|
||||
const insertEventJSONSQL = "" +
|
||||
"INSERT INTO event_json (event_nid, event_json) VALUES ($1, $2)" +
|
||||
" ON CONFLICT DO NOTHING"
|
||||
|
||||
// Bulk event JSON lookup by numeric event ID.
|
||||
// Sort by the numeric event ID.
|
||||
// This means that we can use binary search to lookup by numeric event ID.
|
||||
const bulkSelectEventJSONSQL = "" +
|
||||
"SELECT event_nid, event_json FROM event_json" +
|
||||
" WHERE event_nid = ANY($1)" +
|
||||
" ORDER BY event_nid ASC"
|
||||
|
||||
func (s *statements) insertEventJSON(eventNID types.EventNID, eventJSON []byte) error {
|
||||
_, err := s.insertEventJSONStmt.Exec(int64(eventNID), eventJSON)
|
||||
return err
|
||||
}
|
||||
|
||||
type eventJSONPair struct {
|
||||
EventNID types.EventNID
|
||||
EventJSON []byte
|
||||
}
|
||||
|
||||
func (s *statements) bulkSelectEventJSON(eventNIDs []types.EventNID) ([]eventJSONPair, error) {
|
||||
nids := make([]int64, len(eventNIDs))
|
||||
for i := range eventNIDs {
|
||||
nids[i] = int64(eventNIDs[i])
|
||||
}
|
||||
rows, err := s.bulkSelectEventJSONStmt.Query(pq.Int64Array(nids))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
|
||||
// We know that we will only get as many results as event NIDs
|
||||
// because of the unique constraint on event NIDs.
|
||||
// So we can allocate an array of the correct size now.
|
||||
// We might get fewer results than NIDs so we adjust the length of the slice before returning it.
|
||||
results := make([]eventJSONPair, len(eventNIDs))
|
||||
i := 0
|
||||
for ; rows.Next(); i++ {
|
||||
result := &results[i]
|
||||
var eventNID int64
|
||||
if err := rows.Scan(&eventNID, &result.EventJSON); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
result.EventNID = types.EventNID(eventNID)
|
||||
}
|
||||
return results[:i], nil
|
||||
}
|
||||
|
||||
const stateSchema = `
|
||||
-- The state of a room before an event.
|
||||
-- Stored as a list of state_block entries stored in a separate table.
|
||||
-- The actual state is constructed by combining all the state_block entries
|
||||
-- referenced by state_block_nids together. If the same state key tuple appears
|
||||
-- multiple times then the entry from the later state_block clobbers the earlier
|
||||
-- entries.
|
||||
-- This encoding format allows us to implement a delta encoding which is useful
|
||||
-- because room state tends to accumulate small changes over time. Although if
|
||||
-- the list of deltas becomes too long it becomes more efficient to encode
|
||||
-- the full state under single state_block_nid.
|
||||
CREATE SEQUENCE IF NOT EXISTS state_snapshot_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS state_snapshots (
|
||||
-- Local numeric ID for the state.
|
||||
state_snapshot_nid bigint PRIMARY KEY DEFAULT nextval('state_snapshot_nid_seq'),
|
||||
-- Local numeric ID of the room this state is for.
|
||||
-- Unused in normal operation, but useful for background work or ad-hoc debugging.
|
||||
room_nid bigint NOT NULL,
|
||||
-- List of state_block_nids, stored sorted by state_block_nid.
|
||||
state_block_nids bigint[] NOT NULL
|
||||
);
|
||||
`
|
||||
|
||||
const insertStateSQL = "" +
|
||||
"INSERT INTO state_snapshots (room_nid, state_block_nids)" +
|
||||
" VALUES ($1, $2)" +
|
||||
" RETURNING state_snapshot_nid"
|
||||
|
||||
// Bulk state data NID lookup.
|
||||
// Sorting by state_snapshot_nid means we can use binary search over the result
|
||||
// to lookup the state data NIDs for a state snapshot NID.
|
||||
const bulkSelectStateBlockNIDsSQL = "" +
|
||||
"SELECT state_snapshot_nid, state_block_nids FROM state_snapshots" +
|
||||
" WHERE state_snapshot_nid = ANY($1) ORDER BY state_snapshot_nid ASC"
|
||||
|
||||
func (s *statements) prepareState(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(stateSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertStateStmt, err = db.Prepare(insertStateSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectStateBlockNIDsStmt, err = db.Prepare(bulkSelectStateBlockNIDsSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *statements) insertState(roomNID types.RoomNID, stateBlockNIDs []types.StateBlockNID) (stateNID types.StateSnapshotNID, err error) {
|
||||
nids := make([]int64, len(stateBlockNIDs))
|
||||
for i := range stateBlockNIDs {
|
||||
nids[i] = int64(stateBlockNIDs[i])
|
||||
}
|
||||
err = s.insertStateStmt.QueryRow(int64(roomNID), pq.Int64Array(nids)).Scan(&stateNID)
|
||||
return
|
||||
}
|
||||
|
||||
func (s *statements) bulkSelectStateBlockNIDs(stateNIDs []types.StateSnapshotNID) ([]types.StateBlockNIDList, error) {
|
||||
nids := make([]int64, len(stateNIDs))
|
||||
for i := range stateNIDs {
|
||||
nids[i] = int64(stateNIDs[i])
|
||||
}
|
||||
rows, err := s.bulkSelectStateBlockNIDsStmt.Query(pq.Int64Array(nids))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
results := make([]types.StateBlockNIDList, len(stateNIDs))
|
||||
i := 0
|
||||
for ; rows.Next(); i++ {
|
||||
result := &results[i]
|
||||
var stateBlockNIDs pq.Int64Array
|
||||
if err := rows.Scan(&result.StateSnapshotNID, &stateBlockNIDs); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
result.StateBlockNIDs = make([]types.StateBlockNID, len(stateBlockNIDs))
|
||||
for k := range stateBlockNIDs {
|
||||
result.StateBlockNIDs[k] = types.StateBlockNID(stateBlockNIDs[k])
|
||||
}
|
||||
}
|
||||
if i != len(stateNIDs) {
|
||||
return nil, fmt.Errorf("storage: state NIDs missing from the database (%d != %d)", i, len(stateNIDs))
|
||||
}
|
||||
return results, nil
|
||||
}
|
||||
|
||||
const stateDataSchema = `
|
||||
-- The state data map.
|
||||
-- Designed to give enough information to run the state resolution algorithm
|
||||
-- without hitting the database in the common case.
|
||||
-- TODO: Is it worth replacing the unique btree index with a covering index so
|
||||
-- that postgres could lookup the state using an index-only scan?
|
||||
-- The type and state_key are included in the index to make it easier to
|
||||
-- lookup a specific (type, state_key) pair for an event. It also makes it easy
|
||||
-- to read the state for a given state_block_nid ordered by (type, state_key)
|
||||
-- which in turn makes it easier to merge state data blocks.
|
||||
CREATE SEQUENCE IF NOT EXISTS state_block_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS state_block (
|
||||
-- Local numeric ID for this state data.
|
||||
state_block_nid bigint NOT NULL,
|
||||
event_type_nid bigint NOT NULL,
|
||||
event_state_key_nid bigint NOT NULL,
|
||||
event_nid bigint NOT NULL,
|
||||
UNIQUE (state_block_nid, event_type_nid, event_state_key_nid)
|
||||
);
|
||||
`
|
||||
|
||||
const insertStateDataSQL = "" +
|
||||
"INSERT INTO state_block (state_block_nid, event_type_nid, event_state_key_nid, event_nid)" +
|
||||
" VALUES ($1, $2, $3, $4)"
|
||||
|
||||
const selectNextStateBlockNIDSQL = "" +
|
||||
"SELECT nextval('state_block_nid_seq')"
|
||||
|
||||
// Bulk state lookup by numeric event ID.
|
||||
// Sort by the state_block_nid, event_type_nid, event_state_key_nid
|
||||
// This means that all the entries for a given state_block_nid will appear
|
||||
// together in the list and those entries will sorted by event_type_nid
|
||||
// and event_state_key_nid. This property makes it easier to merge two
|
||||
// state data blocks together.
|
||||
const bulkSelectStateDataEntriesSQL = "" +
|
||||
"SELECT state_block_nid, event_type_nid, event_state_key_nid, event_nid" +
|
||||
" FROM state_block WHERE state_block_nid = ANY($1)" +
|
||||
" ORDER BY state_block_nid, event_type_nid, event_state_key_nid"
|
||||
|
||||
func (s *statements) prepareStateData(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(stateDataSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertStateDataStmt, err = db.Prepare(insertStateDataSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectNextStateBlockNIDStmt, err = db.Prepare(selectNextStateBlockNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if s.bulkSelectStateDataEntriesStmt, err = db.Prepare(bulkSelectStateDataEntriesSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *statements) bulkInsertStateData(stateBlockNID types.StateBlockNID, entries []types.StateEntry) error {
|
||||
for _, entry := range entries {
|
||||
_, err := s.insertStateDataStmt.Exec(
|
||||
int64(stateBlockNID),
|
||||
int64(entry.EventTypeNID),
|
||||
int64(entry.EventStateKeyNID),
|
||||
int64(entry.EventNID),
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *statements) selectNextStateBlockNID() (types.StateBlockNID, error) {
|
||||
var stateBlockNID int64
|
||||
err := s.selectNextStateBlockNIDStmt.QueryRow().Scan(&stateBlockNID)
|
||||
return types.StateBlockNID(stateBlockNID), err
|
||||
}
|
||||
|
||||
func (s *statements) bulkSelectStateDataEntries(stateBlockNIDs []types.StateBlockNID) ([]types.StateEntryList, error) {
|
||||
nids := make([]int64, len(stateBlockNIDs))
|
||||
for i := range stateBlockNIDs {
|
||||
nids[i] = int64(stateBlockNIDs[i])
|
||||
}
|
||||
rows, err := s.bulkSelectStateDataEntriesStmt.Query(pq.Int64Array(nids))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
|
||||
results := make([]types.StateEntryList, len(stateBlockNIDs))
|
||||
// current is a pointer to the StateEntryList to append the state entries to.
|
||||
var current *types.StateEntryList
|
||||
i := 0
|
||||
for rows.Next() {
|
||||
var (
|
||||
stateBlockNID int64
|
||||
eventTypeNID int64
|
||||
eventStateKeyNID int64
|
||||
eventNID int64
|
||||
entry types.StateEntry
|
||||
)
|
||||
if err := rows.Scan(
|
||||
&stateBlockNID, &eventTypeNID, &eventStateKeyNID, &eventNID,
|
||||
); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
entry.EventTypeNID = types.EventTypeNID(eventTypeNID)
|
||||
entry.EventStateKeyNID = types.EventStateKeyNID(eventStateKeyNID)
|
||||
entry.EventNID = types.EventNID(eventNID)
|
||||
if current == nil || types.StateBlockNID(stateBlockNID) != current.StateBlockNID {
|
||||
// The state entry row is for a different state data block to the current one.
|
||||
// So we start appending to the next entry in the list.
|
||||
current = &results[i]
|
||||
current.StateBlockNID = types.StateBlockNID(stateBlockNID)
|
||||
i++
|
||||
}
|
||||
current.StateEntries = append(current.StateEntries, entry)
|
||||
}
|
||||
if i != len(stateBlockNIDs) {
|
||||
return nil, fmt.Errorf("storage: state data NIDs missing from the database (%d != %d)", i, len(stateBlockNIDs))
|
||||
}
|
||||
return results, nil
|
||||
}
|
||||
|
||||
@ -0,0 +1,137 @@
|
||||
package storage
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"github.com/lib/pq"
|
||||
"github.com/matrix-org/dendrite/roomserver/types"
|
||||
)
|
||||
|
||||
const stateDataSchema = `
|
||||
-- The state data map.
|
||||
-- Designed to give enough information to run the state resolution algorithm
|
||||
-- without hitting the database in the common case.
|
||||
-- TODO: Is it worth replacing the unique btree index with a covering index so
|
||||
-- that postgres could lookup the state using an index-only scan?
|
||||
-- The type and state_key are included in the index to make it easier to
|
||||
-- lookup a specific (type, state_key) pair for an event. It also makes it easy
|
||||
-- to read the state for a given state_block_nid ordered by (type, state_key)
|
||||
-- which in turn makes it easier to merge state data blocks.
|
||||
CREATE SEQUENCE IF NOT EXISTS state_block_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS state_block (
|
||||
-- Local numeric ID for this state data.
|
||||
state_block_nid bigint NOT NULL,
|
||||
event_type_nid bigint NOT NULL,
|
||||
event_state_key_nid bigint NOT NULL,
|
||||
event_nid bigint NOT NULL,
|
||||
UNIQUE (state_block_nid, event_type_nid, event_state_key_nid)
|
||||
);
|
||||
`
|
||||
|
||||
const insertStateDataSQL = "" +
|
||||
"INSERT INTO state_block (state_block_nid, event_type_nid, event_state_key_nid, event_nid)" +
|
||||
" VALUES ($1, $2, $3, $4)"
|
||||
|
||||
const selectNextStateBlockNIDSQL = "" +
|
||||
"SELECT nextval('state_block_nid_seq')"
|
||||
|
||||
// Bulk state lookup by numeric event ID.
|
||||
// Sort by the state_block_nid, event_type_nid, event_state_key_nid
|
||||
// This means that all the entries for a given state_block_nid will appear
|
||||
// together in the list and those entries will sorted by event_type_nid
|
||||
// and event_state_key_nid. This property makes it easier to merge two
|
||||
// state data blocks together.
|
||||
const bulkSelectStateDataEntriesSQL = "" +
|
||||
"SELECT state_block_nid, event_type_nid, event_state_key_nid, event_nid" +
|
||||
" FROM state_block WHERE state_block_nid = ANY($1)" +
|
||||
" ORDER BY state_block_nid, event_type_nid, event_state_key_nid"
|
||||
|
||||
type stateBlockStatements struct {
|
||||
insertStateDataStmt *sql.Stmt
|
||||
selectNextStateBlockNIDStmt *sql.Stmt
|
||||
bulkSelectStateDataEntriesStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func (s *stateBlockStatements) prepare(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(stateDataSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertStateDataStmt, err = db.Prepare(insertStateDataSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.selectNextStateBlockNIDStmt, err = db.Prepare(selectNextStateBlockNIDSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectStateDataEntriesStmt, err = db.Prepare(bulkSelectStateDataEntriesSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *stateBlockStatements) bulkInsertStateData(stateBlockNID types.StateBlockNID, entries []types.StateEntry) error {
|
||||
for _, entry := range entries {
|
||||
_, err := s.insertStateDataStmt.Exec(
|
||||
int64(stateBlockNID),
|
||||
int64(entry.EventTypeNID),
|
||||
int64(entry.EventStateKeyNID),
|
||||
int64(entry.EventNID),
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *stateBlockStatements) selectNextStateBlockNID() (types.StateBlockNID, error) {
|
||||
var stateBlockNID int64
|
||||
err := s.selectNextStateBlockNIDStmt.QueryRow().Scan(&stateBlockNID)
|
||||
return types.StateBlockNID(stateBlockNID), err
|
||||
}
|
||||
|
||||
func (s *stateBlockStatements) bulkSelectStateDataEntries(stateBlockNIDs []types.StateBlockNID) ([]types.StateEntryList, error) {
|
||||
nids := make([]int64, len(stateBlockNIDs))
|
||||
for i := range stateBlockNIDs {
|
||||
nids[i] = int64(stateBlockNIDs[i])
|
||||
}
|
||||
rows, err := s.bulkSelectStateDataEntriesStmt.Query(pq.Int64Array(nids))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
|
||||
results := make([]types.StateEntryList, len(stateBlockNIDs))
|
||||
// current is a pointer to the StateEntryList to append the state entries to.
|
||||
var current *types.StateEntryList
|
||||
i := 0
|
||||
for rows.Next() {
|
||||
var (
|
||||
stateBlockNID int64
|
||||
eventTypeNID int64
|
||||
eventStateKeyNID int64
|
||||
eventNID int64
|
||||
entry types.StateEntry
|
||||
)
|
||||
if err := rows.Scan(
|
||||
&stateBlockNID, &eventTypeNID, &eventStateKeyNID, &eventNID,
|
||||
); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
entry.EventTypeNID = types.EventTypeNID(eventTypeNID)
|
||||
entry.EventStateKeyNID = types.EventStateKeyNID(eventStateKeyNID)
|
||||
entry.EventNID = types.EventNID(eventNID)
|
||||
if current == nil || types.StateBlockNID(stateBlockNID) != current.StateBlockNID {
|
||||
// The state entry row is for a different state data block to the current one.
|
||||
// So we start appending to the next entry in the list.
|
||||
current = &results[i]
|
||||
current.StateBlockNID = types.StateBlockNID(stateBlockNID)
|
||||
i++
|
||||
}
|
||||
current.StateEntries = append(current.StateEntries, entry)
|
||||
}
|
||||
if i != len(stateBlockNIDs) {
|
||||
return nil, fmt.Errorf("storage: state data NIDs missing from the database (%d != %d)", i, len(stateBlockNIDs))
|
||||
}
|
||||
return results, nil
|
||||
}
|
||||
@ -0,0 +1,100 @@
|
||||
package storage
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"github.com/lib/pq"
|
||||
"github.com/matrix-org/dendrite/roomserver/types"
|
||||
)
|
||||
|
||||
const stateSnapshotSchema = `
|
||||
-- The state of a room before an event.
|
||||
-- Stored as a list of state_block entries stored in a separate table.
|
||||
-- The actual state is constructed by combining all the state_block entries
|
||||
-- referenced by state_block_nids together. If the same state key tuple appears
|
||||
-- multiple times then the entry from the later state_block clobbers the earlier
|
||||
-- entries.
|
||||
-- This encoding format allows us to implement a delta encoding which is useful
|
||||
-- because room state tends to accumulate small changes over time. Although if
|
||||
-- the list of deltas becomes too long it becomes more efficient to encode
|
||||
-- the full state under single state_block_nid.
|
||||
CREATE SEQUENCE IF NOT EXISTS state_snapshot_nid_seq;
|
||||
CREATE TABLE IF NOT EXISTS state_snapshots (
|
||||
-- Local numeric ID for the state.
|
||||
state_snapshot_nid bigint PRIMARY KEY DEFAULT nextval('state_snapshot_nid_seq'),
|
||||
-- Local numeric ID of the room this state is for.
|
||||
-- Unused in normal operation, but useful for background work or ad-hoc debugging.
|
||||
room_nid bigint NOT NULL,
|
||||
-- List of state_block_nids, stored sorted by state_block_nid.
|
||||
state_block_nids bigint[] NOT NULL
|
||||
);
|
||||
`
|
||||
|
||||
const insertStateSQL = "" +
|
||||
"INSERT INTO state_snapshots (room_nid, state_block_nids)" +
|
||||
" VALUES ($1, $2)" +
|
||||
" RETURNING state_snapshot_nid"
|
||||
|
||||
// Bulk state data NID lookup.
|
||||
// Sorting by state_snapshot_nid means we can use binary search over the result
|
||||
// to lookup the state data NIDs for a state snapshot NID.
|
||||
const bulkSelectStateBlockNIDsSQL = "" +
|
||||
"SELECT state_snapshot_nid, state_block_nids FROM state_snapshots" +
|
||||
" WHERE state_snapshot_nid = ANY($1) ORDER BY state_snapshot_nid ASC"
|
||||
|
||||
type stateSnapshotStatements struct {
|
||||
insertStateStmt *sql.Stmt
|
||||
bulkSelectStateBlockNIDsStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func (s *stateSnapshotStatements) prepare(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(stateSnapshotSchema)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s.insertStateStmt, err = db.Prepare(insertStateSQL); err != nil {
|
||||
return
|
||||
}
|
||||
if s.bulkSelectStateBlockNIDsStmt, err = db.Prepare(bulkSelectStateBlockNIDsSQL); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (s *stateSnapshotStatements) insertState(roomNID types.RoomNID, stateBlockNIDs []types.StateBlockNID) (stateNID types.StateSnapshotNID, err error) {
|
||||
nids := make([]int64, len(stateBlockNIDs))
|
||||
for i := range stateBlockNIDs {
|
||||
nids[i] = int64(stateBlockNIDs[i])
|
||||
}
|
||||
err = s.insertStateStmt.QueryRow(int64(roomNID), pq.Int64Array(nids)).Scan(&stateNID)
|
||||
return
|
||||
}
|
||||
|
||||
func (s *stateSnapshotStatements) bulkSelectStateBlockNIDs(stateNIDs []types.StateSnapshotNID) ([]types.StateBlockNIDList, error) {
|
||||
nids := make([]int64, len(stateNIDs))
|
||||
for i := range stateNIDs {
|
||||
nids[i] = int64(stateNIDs[i])
|
||||
}
|
||||
rows, err := s.bulkSelectStateBlockNIDsStmt.Query(pq.Int64Array(nids))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
results := make([]types.StateBlockNIDList, len(stateNIDs))
|
||||
i := 0
|
||||
for ; rows.Next(); i++ {
|
||||
result := &results[i]
|
||||
var stateBlockNIDs pq.Int64Array
|
||||
if err := rows.Scan(&result.StateSnapshotNID, &stateBlockNIDs); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
result.StateBlockNIDs = make([]types.StateBlockNID, len(stateBlockNIDs))
|
||||
for k := range stateBlockNIDs {
|
||||
result.StateBlockNIDs[k] = types.StateBlockNID(stateBlockNIDs[k])
|
||||
}
|
||||
}
|
||||
if i != len(stateNIDs) {
|
||||
return nil, fmt.Errorf("storage: state NIDs missing from the database (%d != %d)", i, len(stateNIDs))
|
||||
}
|
||||
return results, nil
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user