dendrite/keyserver/storage/sqlite3/stale_device_lists.go

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// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sqlite3
import (
"context"
"database/sql"
"time"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/keyserver/storage/tables"
"github.com/matrix-org/gomatrixserverlib"
)
var staleDeviceListsSchema = `
-- Stores whether a user's device lists are stale or not.
CREATE TABLE IF NOT EXISTS keyserver_stale_device_lists (
user_id TEXT PRIMARY KEY NOT NULL,
domain TEXT NOT NULL,
is_stale BOOLEAN NOT NULL,
ts_added_secs BIGINT NOT NULL
);
CREATE INDEX IF NOT EXISTS keyserver_stale_device_lists_idx ON keyserver_stale_device_lists (domain, is_stale);
`
const upsertStaleDeviceListSQL = "" +
"INSERT INTO keyserver_stale_device_lists (user_id, domain, is_stale, ts_added_secs)" +
" VALUES ($1, $2, $3, $4)" +
" ON CONFLICT (user_id)" +
" DO UPDATE SET is_stale = $3, ts_added_secs = $4"
const selectStaleDeviceListsWithDomainsSQL = "" +
"SELECT user_id FROM keyserver_stale_device_lists WHERE is_stale = $1 AND domain = $2"
const selectStaleDeviceListsSQL = "" +
"SELECT user_id FROM keyserver_stale_device_lists WHERE is_stale = $1"
type staleDeviceListsStatements struct {
db *sql.DB
upsertStaleDeviceListStmt *sql.Stmt
selectStaleDeviceListsWithDomainsStmt *sql.Stmt
selectStaleDeviceListsStmt *sql.Stmt
}
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func NewSqliteStaleDeviceListsTable(db *sql.DB) (tables.StaleDeviceLists, error) {
s := &staleDeviceListsStatements{
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db: db,
}
_, err := db.Exec(staleDeviceListsSchema)
if err != nil {
return nil, err
}
if s.upsertStaleDeviceListStmt, err = db.Prepare(upsertStaleDeviceListSQL); err != nil {
return nil, err
}
if s.selectStaleDeviceListsStmt, err = db.Prepare(selectStaleDeviceListsSQL); err != nil {
return nil, err
}
if s.selectStaleDeviceListsWithDomainsStmt, err = db.Prepare(selectStaleDeviceListsWithDomainsSQL); err != nil {
return nil, err
}
return s, nil
}
func (s *staleDeviceListsStatements) InsertStaleDeviceList(ctx context.Context, userID string, isStale bool) error {
_, domain, err := gomatrixserverlib.SplitID('@', userID)
if err != nil {
return err
}
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_, err = s.upsertStaleDeviceListStmt.ExecContext(ctx, userID, string(domain), isStale, time.Now().Unix())
return err
}
func (s *staleDeviceListsStatements) SelectUserIDsWithStaleDeviceLists(ctx context.Context, domains []gomatrixserverlib.ServerName) ([]string, error) {
// we only query for 1 domain or all domains so optimise for those use cases
if len(domains) == 0 {
rows, err := s.selectStaleDeviceListsStmt.QueryContext(ctx, true)
if err != nil {
return nil, err
}
return rowsToUserIDs(ctx, rows)
}
var result []string
for _, domain := range domains {
rows, err := s.selectStaleDeviceListsWithDomainsStmt.QueryContext(ctx, true, string(domain))
if err != nil {
return nil, err
}
userIDs, err := rowsToUserIDs(ctx, rows)
if err != nil {
return nil, err
}
result = append(result, userIDs...)
}
return result, nil
}
func rowsToUserIDs(ctx context.Context, rows *sql.Rows) (result []string, err error) {
defer internal.CloseAndLogIfError(ctx, rows, "closing rowsToUserIDs failed")
for rows.Next() {
var userID string
if err := rows.Scan(&userID); err != nil {
return nil, err
}
result = append(result, userID)
}
return result, rows.Err()
}