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// Copyright 2017-2018 New Vector Ltd
// Copyright 2019-2020 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 postgres
import (
"context"
"database/sql"
"github.com/lib/pq"
"github.com/matrix-org/dendrite/federationsender/types"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/gomatrixserverlib"
)
const joinedHostsSchema = `
-- The joined_hosts table stores a list of m.room.member event ids in the
-- current state for each room where the membership is "join".
-- There will be an entry for every user that is joined to the room.
CREATE TABLE IF NOT EXISTS federationsender_joined_hosts (
-- The string ID of the room.
room_id TEXT NOT NULL,
-- The event ID of the m.room.member join event.
event_id TEXT NOT NULL,
-- The domain part of the user ID the m.room.member event is for.
server_name TEXT NOT NULL
);
CREATE UNIQUE INDEX IF NOT EXISTS federatonsender_joined_hosts_event_id_idx
ON federationsender_joined_hosts (event_id);
CREATE INDEX IF NOT EXISTS federatonsender_joined_hosts_room_id_idx
ON federationsender_joined_hosts (room_id)
`
const insertJoinedHostsSQL = "" +
"INSERT INTO federationsender_joined_hosts (room_id, event_id, server_name)" +
" VALUES ($1, $2, $3)"
const deleteJoinedHostsSQL = "" +
"DELETE FROM federationsender_joined_hosts WHERE event_id = ANY($1)"
const selectJoinedHostsSQL = "" +
"SELECT event_id, server_name FROM federationsender_joined_hosts" +
" WHERE room_id = $1"
type joinedHostsStatements struct {
insertJoinedHostsStmt *sql.Stmt
deleteJoinedHostsStmt *sql.Stmt
selectJoinedHostsStmt *sql.Stmt
}
func (s *joinedHostsStatements) prepare(db *sql.DB) (err error) {
_, err = db.Exec(joinedHostsSchema)
if err != nil {
return
}
if s.insertJoinedHostsStmt, err = db.Prepare(insertJoinedHostsSQL); err != nil {
return
}
if s.deleteJoinedHostsStmt, err = db.Prepare(deleteJoinedHostsSQL); err != nil {
return
}
if s.selectJoinedHostsStmt, err = db.Prepare(selectJoinedHostsSQL); err != nil {
return
}
return
}
func (s *joinedHostsStatements) insertJoinedHosts(
ctx context.Context,
txn *sql.Tx,
roomID, eventID string,
serverName gomatrixserverlib.ServerName,
) error {
stmt := internal.TxStmt(txn, s.insertJoinedHostsStmt)
_, err := stmt.ExecContext(ctx, roomID, eventID, serverName)
return err
}
func (s *joinedHostsStatements) deleteJoinedHosts(
ctx context.Context, txn *sql.Tx, eventIDs []string,
) error {
stmt := internal.TxStmt(txn, s.deleteJoinedHostsStmt)
_, err := stmt.ExecContext(ctx, pq.StringArray(eventIDs))
return err
}
func (s *joinedHostsStatements) selectJoinedHostsWithTx(
ctx context.Context, txn *sql.Tx, roomID string,
) ([]types.JoinedHost, error) {
stmt := internal.TxStmt(txn, s.selectJoinedHostsStmt)
return joinedHostsFromStmt(ctx, stmt, roomID)
}
func (s *joinedHostsStatements) selectJoinedHosts(
ctx context.Context, roomID string,
) ([]types.JoinedHost, error) {
return joinedHostsFromStmt(ctx, s.selectJoinedHostsStmt, roomID)
}
func joinedHostsFromStmt(
ctx context.Context, stmt *sql.Stmt, roomID string,
) ([]types.JoinedHost, error) {
rows, err := stmt.QueryContext(ctx, roomID)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "joinedHostsFromStmt: rows.close() failed")
var result []types.JoinedHost
for rows.Next() {
var eventID, serverName string
if err = rows.Scan(&eventID, &serverName); err != nil {
return nil, err
}
result = append(result, types.JoinedHost{
MemberEventID: eventID,
ServerName: gomatrixserverlib.ServerName(serverName),
})
}
return result, rows.Err()
}
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