Support sqlite in addition to postgres (#869)

* Move current work into single branch

* Initial massaging of clientapi etc (not working yet)

* Interfaces for accounts/devices databases

* Duplicate postgres package for sqlite3 (no changes made to it yet)

* Some keydb, accountdb, devicedb, common partition fixes, some more syncapi tweaking

* Fix accounts DB, device DB

* Update naffka dependency for SQLite

* Naffka SQLite

* Update naffka to latest master

* SQLite support for federationsender

* Mostly not-bad support for SQLite in syncapi (although there are problems where lots of events get classed incorrectly as backward extremities, probably because of IN/ANY clauses that are badly supported)

* Update Dockerfile -> Go 1.13.7, add build-base (as gcc and friends are needed for SQLite)

* Implement GET endpoints for account_data in clientapi

* Nuke filtering for now...

* Revert "Implement GET endpoints for account_data in clientapi"

This reverts commit 4d80dff4583d278620d9b3ed437e9fcd8d4674ee.

* Implement GET endpoints for account_data in clientapi (#861)

* Implement GET endpoints for account_data in clientapi

* Fix accountDB parameter

* Remove fmt.Println

* Fix insertAccountData SQLite query

* Fix accountDB storage interfaces

* Add empty push rules into account data on account creation (#862)

* Put SaveAccountData into the right function this time

* Not sure if roomserver is better or worse now

* sqlite work

* Allow empty last sent ID for the first event

* sqlite: room creation works

* Support sending messages

* Nuke fmt.println

* Move QueryVariadic etc into common, other device fixes

* Fix some linter issues

* Fix bugs

* Fix some linting errors

* Fix errcheck lint errors

* Make naffka use postgres as fallback, fix couple of compile errors

* What on earth happened to the /rooms/{roomID}/send/{eventType} routing

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>

1 files changed, 180 insertions, 0 deletions

diff --git a/roomserver/storage/sqlite3/membership_table.go b/roomserver/storage/sqlite3/membership_table.go
new file mode 100644
index 00000000..97877673
--- /dev/null
+++ b/roomserver/storage/sqlite3/membership_table.go
@@ -0,0 +1,180 @@
+// 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 sqlite3
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/matrix-org/dendrite/common"
+	"github.com/matrix-org/dendrite/roomserver/types"
+)
+
+type membershipState int64
+
+const (
+	membershipStateLeaveOrBan membershipState = 1
+	membershipStateInvite     membershipState = 2
+	membershipStateJoin       membershipState = 3
+)
+
+const membershipSchema = `
+	CREATE TABLE IF NOT EXISTS roomserver_membership (
+		room_nid INTEGER NOT NULL,
+		target_nid INTEGER NOT NULL,
+		sender_nid INTEGER NOT NULL DEFAULT 0,
+		membership_nid INTEGER NOT NULL DEFAULT 1,
+		event_nid INTEGER NOT NULL DEFAULT 0,
+		UNIQUE (room_nid, target_nid)
+	);
+`
+
+// Insert a row in to membership table so that it can be locked by the
+// SELECT FOR UPDATE
+const insertMembershipSQL = "" +
+	"INSERT INTO roomserver_membership (room_nid, target_nid)" +
+	" VALUES ($1, $2)" +
+	" ON CONFLICT DO NOTHING"
+
+const selectMembershipFromRoomAndTargetSQL = "" +
+	"SELECT membership_nid, event_nid FROM roomserver_membership" +
+	" WHERE room_nid = $1 AND target_nid = $2"
+
+const selectMembershipsFromRoomAndMembershipSQL = "" +
+	"SELECT event_nid FROM roomserver_membership" +
+	" WHERE room_nid = $1 AND membership_nid = $2"
+
+const selectMembershipsFromRoomSQL = "" +
+	"SELECT event_nid FROM roomserver_membership" +
+	" WHERE room_nid = $1"
+
+const selectMembershipForUpdateSQL = "" +
+	"SELECT membership_nid FROM roomserver_membership" +
+	" WHERE room_nid = $1 AND target_nid = $2"
+
+const updateMembershipSQL = "" +
+	"UPDATE roomserver_membership SET sender_nid = $1, membership_nid = $2, event_nid = $3" +
+	" WHERE room_nid = $4 AND target_nid = $5"
+
+type membershipStatements struct {
+	insertMembershipStmt                       *sql.Stmt
+	selectMembershipForUpdateStmt              *sql.Stmt
+	selectMembershipFromRoomAndTargetStmt      *sql.Stmt
+	selectMembershipsFromRoomAndMembershipStmt *sql.Stmt
+	selectMembershipsFromRoomStmt              *sql.Stmt
+	updateMembershipStmt                       *sql.Stmt
+}
+
+func (s *membershipStatements) prepare(db *sql.DB) (err error) {
+	_, err = db.Exec(membershipSchema)
+	if err != nil {
+		return
+	}
+
+	return statementList{
+		{&s.insertMembershipStmt, insertMembershipSQL},
+		{&s.selectMembershipForUpdateStmt, selectMembershipForUpdateSQL},
+		{&s.selectMembershipFromRoomAndTargetStmt, selectMembershipFromRoomAndTargetSQL},
+		{&s.selectMembershipsFromRoomAndMembershipStmt, selectMembershipsFromRoomAndMembershipSQL},
+		{&s.selectMembershipsFromRoomStmt, selectMembershipsFromRoomSQL},
+		{&s.updateMembershipStmt, updateMembershipSQL},
+	}.prepare(db)
+}
+
+func (s *membershipStatements) insertMembership(
+	ctx context.Context, txn *sql.Tx,
+	roomNID types.RoomNID, targetUserNID types.EventStateKeyNID,
+) error {
+	stmt := common.TxStmt(txn, s.insertMembershipStmt)
+	_, err := stmt.ExecContext(ctx, roomNID, targetUserNID)
+	return err
+}
+
+func (s *membershipStatements) selectMembershipForUpdate(
+	ctx context.Context, txn *sql.Tx,
+	roomNID types.RoomNID, targetUserNID types.EventStateKeyNID,
+) (membership membershipState, err error) {
+	stmt := common.TxStmt(txn, s.selectMembershipForUpdateStmt)
+	err = stmt.QueryRowContext(
+		ctx, roomNID, targetUserNID,
+	).Scan(&membership)
+	return
+}
+
+func (s *membershipStatements) selectMembershipFromRoomAndTarget(
+	ctx context.Context, txn *sql.Tx,
+	roomNID types.RoomNID, targetUserNID types.EventStateKeyNID,
+) (eventNID types.EventNID, membership membershipState, err error) {
+	selectStmt := common.TxStmt(txn, s.selectMembershipFromRoomAndTargetStmt)
+	err = selectStmt.QueryRowContext(
+		ctx, roomNID, targetUserNID,
+	).Scan(&membership, &eventNID)
+	return
+}
+
+func (s *membershipStatements) selectMembershipsFromRoom(
+	ctx context.Context, txn *sql.Tx,
+	roomNID types.RoomNID,
+) (eventNIDs []types.EventNID, err error) {
+	selectStmt := common.TxStmt(txn, s.selectMembershipsFromRoomStmt)
+	rows, err := selectStmt.QueryContext(ctx, roomNID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close() // nolint: errcheck
+
+	for rows.Next() {
+		var eNID types.EventNID
+		if err = rows.Scan(&eNID); err != nil {
+			return
+		}
+		eventNIDs = append(eventNIDs, eNID)
+	}
+	return
+}
+func (s *membershipStatements) selectMembershipsFromRoomAndMembership(
+	ctx context.Context, txn *sql.Tx,
+	roomNID types.RoomNID, membership membershipState,
+) (eventNIDs []types.EventNID, err error) {
+	stmt := common.TxStmt(txn, s.selectMembershipsFromRoomAndMembershipStmt)
+	rows, err := stmt.QueryContext(ctx, roomNID, membership)
+	if err != nil {
+		return
+	}
+	defer rows.Close() // nolint: errcheck
+
+	for rows.Next() {
+		var eNID types.EventNID
+		if err = rows.Scan(&eNID); err != nil {
+			return
+		}
+		eventNIDs = append(eventNIDs, eNID)
+	}
+	return
+}
+
+func (s *membershipStatements) updateMembership(
+	ctx context.Context, txn *sql.Tx,
+	roomNID types.RoomNID, targetUserNID types.EventStateKeyNID,
+	senderUserNID types.EventStateKeyNID, membership membershipState,
+	eventNID types.EventNID,
+) error {
+	stmt := common.TxStmt(txn, s.updateMembershipStmt)
+	_, err := stmt.ExecContext(
+		ctx, senderUserNID, membership, eventNID, roomNID, targetUserNID,
+	)
+	return err
+}