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Limit presence in /sync responses (#2394)

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* Use filter and limit presence count

* More limiting

* More limiting

* Fix unit test

* Also limit presence by last_active_ts

* Update query, use "from" as the initial lastPos

* Get 1000 presence events, they are filtered later

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
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Till 2022-04-28 16:12:40 +02:00 • committed by GitHub
parent 8683ff78b1
commit 21ee5b36a4
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7 changed files with 27 additions and 14 deletions
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9
syncapi/storage/postgres/presence_table.go
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@ -17,6 +17,7 @@ package postgres
import (
"context"
"database/sql"
"time"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
@ -72,7 +73,8 @@ const selectMaxPresenceSQL = "" +
const selectPresenceAfter = "" +
" SELECT id, user_id, presence, status_msg, last_active_ts" +
" FROM syncapi_presence" +
" WHERE id > $1"
" WHERE id > $1 AND last_active_ts >= $2" +
" ORDER BY id ASC LIMIT $3"
type presenceStatements struct {
upsertPresenceStmt *sql.Stmt
@ -144,11 +146,12 @@ func (p *presenceStatements) GetMaxPresenceID(ctx context.Context, txn *sql.Tx)
func (p *presenceStatements) GetPresenceAfter(
ctx context.Context, txn *sql.Tx,
after types.StreamPosition,
filter gomatrixserverlib.EventFilter,
) (presences map[string]*types.PresenceInternal, err error) {
presences = make(map[string]*types.PresenceInternal)
stmt := sqlutil.TxStmt(txn, p.selectPresenceAfterStmt)
rows, err := stmt.QueryContext(ctx, after)
afterTS := gomatrixserverlib.AsTimestamp(time.Now().Add(time.Minute * -5))
rows, err := stmt.QueryContext(ctx, after, afterTS, filter.Limit)
if err != nil {
return nil, err
}