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dendrite/roomserver/storage/storage.go

712 lines
21 KiB
Go

// Copyright 2017 Vector Creations Ltd
//
// 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 storage
import (
"context"
"database/sql"
// Import the postgres database driver.
_ "github.com/lib/pq"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib"
)
// A Database is used to store room events and stream offsets.
type Database struct {
statements statements
db *sql.DB
}
// Open a postgres database.
func Open(dataSourceName string) (*Database, error) {
var d Database
var err error
if d.db, err = sql.Open("postgres", dataSourceName); err != nil {
return nil, err
}
if err = d.statements.prepare(d.db); err != nil {
return nil, err
}
return &d, nil
}
// StoreEvent implements input.EventDatabase
func (d *Database) StoreEvent(
ctx context.Context, event gomatrixserverlib.Event,
txnAndDeviceID *api.TransactionID, authEventNIDs []types.EventNID,
) (types.RoomNID, types.StateAtEvent, error) {
var (
roomNID types.RoomNID
eventTypeNID types.EventTypeNID
eventStateKeyNID types.EventStateKeyNID
eventNID types.EventNID
stateNID types.StateSnapshotNID
err error
)
if txnAndDeviceID != nil {
if err = d.statements.insertTransaction(
ctx, txnAndDeviceID.TransactionID,
txnAndDeviceID.DeviceID, event.Sender(), event.EventID(),
); err != nil {
return 0, types.StateAtEvent{}, err
}
}
if roomNID, err = d.assignRoomNID(ctx, nil, event.RoomID()); err != nil {
return 0, types.StateAtEvent{}, err
}
if eventTypeNID, err = d.assignEventTypeNID(ctx, event.Type()); err != nil {
return 0, types.StateAtEvent{}, err
}
eventStateKey := event.StateKey()
// Assigned a numeric ID for the state_key if there is one present.
// Otherwise set the numeric ID for the state_key to 0.
if eventStateKey != nil {
if eventStateKeyNID, err = d.assignStateKeyNID(ctx, nil, *eventStateKey); err != nil {
return 0, types.StateAtEvent{}, err
}
}
if eventNID, stateNID, err = d.statements.insertEvent(
ctx,
roomNID,
eventTypeNID,
eventStateKeyNID,
event.EventID(),
event.EventReference().EventSHA256,
authEventNIDs,
event.Depth(),
); err != nil {
if err == sql.ErrNoRows {
// We've already inserted the event so select the numeric event ID
eventNID, stateNID, err = d.statements.selectEvent(ctx, event.EventID())
}
if err != nil {
return 0, types.StateAtEvent{}, err
}
}
if err = d.statements.insertEventJSON(ctx, eventNID, event.JSON()); err != nil {
return 0, types.StateAtEvent{}, err
}
return roomNID, types.StateAtEvent{
BeforeStateSnapshotNID: stateNID,
StateEntry: types.StateEntry{
StateKeyTuple: types.StateKeyTuple{
EventTypeNID: eventTypeNID,
EventStateKeyNID: eventStateKeyNID,
},
EventNID: eventNID,
},
}, nil
}
func (d *Database) assignRoomNID(
ctx context.Context, txn *sql.Tx, roomID string,
) (types.RoomNID, error) {
// Check if we already have a numeric ID in the database.
roomNID, err := d.statements.selectRoomNID(ctx, txn, roomID)
if err == sql.ErrNoRows {
// We don't have a numeric ID so insert one into the database.
roomNID, err = d.statements.insertRoomNID(ctx, txn, roomID)
if err == sql.ErrNoRows {
// We raced with another insert so run the select again.
roomNID, err = d.statements.selectRoomNID(ctx, txn, roomID)
}
}
return roomNID, err
}
func (d *Database) assignEventTypeNID(
ctx context.Context, eventType string,
) (types.EventTypeNID, error) {
// Check if we already have a numeric ID in the database.
eventTypeNID, err := d.statements.selectEventTypeNID(ctx, eventType)
if err == sql.ErrNoRows {
// We don't have a numeric ID so insert one into the database.
eventTypeNID, err = d.statements.insertEventTypeNID(ctx, eventType)
if err == sql.ErrNoRows {
// We raced with another insert so run the select again.
eventTypeNID, err = d.statements.selectEventTypeNID(ctx, eventType)
}
}
return eventTypeNID, err
}
func (d *Database) assignStateKeyNID(
ctx context.Context, txn *sql.Tx, eventStateKey string,
) (types.EventStateKeyNID, error) {
// Check if we already have a numeric ID in the database.
eventStateKeyNID, err := d.statements.selectEventStateKeyNID(ctx, txn, eventStateKey)
if err == sql.ErrNoRows {
// We don't have a numeric ID so insert one into the database.
eventStateKeyNID, err = d.statements.insertEventStateKeyNID(ctx, txn, eventStateKey)
if err == sql.ErrNoRows {
// We raced with another insert so run the select again.
eventStateKeyNID, err = d.statements.selectEventStateKeyNID(ctx, txn, eventStateKey)
}
}
return eventStateKeyNID, err
}
// StateEntriesForEventIDs implements input.EventDatabase
func (d *Database) StateEntriesForEventIDs(
ctx context.Context, eventIDs []string,
) ([]types.StateEntry, error) {
return d.statements.bulkSelectStateEventByID(ctx, eventIDs)
}
// EventTypeNIDs implements state.RoomStateDatabase
func (d *Database) EventTypeNIDs(
ctx context.Context, eventTypes []string,
) (map[string]types.EventTypeNID, error) {
return d.statements.bulkSelectEventTypeNID(ctx, eventTypes)
}
// EventStateKeyNIDs implements state.RoomStateDatabase
func (d *Database) EventStateKeyNIDs(
ctx context.Context, eventStateKeys []string,
) (map[string]types.EventStateKeyNID, error) {
return d.statements.bulkSelectEventStateKeyNID(ctx, eventStateKeys)
}
// EventStateKeys implements query.RoomserverQueryAPIDatabase
func (d *Database) EventStateKeys(
ctx context.Context, eventStateKeyNIDs []types.EventStateKeyNID,
) (map[types.EventStateKeyNID]string, error) {
return d.statements.bulkSelectEventStateKey(ctx, eventStateKeyNIDs)
}
// EventNIDs implements query.RoomserverQueryAPIDatabase
func (d *Database) EventNIDs(
ctx context.Context, eventIDs []string,
) (map[string]types.EventNID, error) {
return d.statements.bulkSelectEventNID(ctx, eventIDs)
}
// Events implements input.EventDatabase
func (d *Database) Events(
ctx context.Context, eventNIDs []types.EventNID,
) ([]types.Event, error) {
eventJSONs, err := d.statements.bulkSelectEventJSON(ctx, eventNIDs)
if err != nil {
return nil, err
}
results := make([]types.Event, len(eventJSONs))
for i, eventJSON := range eventJSONs {
result := &results[i]
result.EventNID = eventJSON.EventNID
// TODO: Use NewEventFromTrustedJSON for efficiency
result.Event, err = gomatrixserverlib.NewEventFromUntrustedJSON(eventJSON.EventJSON)
if err != nil {
return nil, err
}
}
return results, nil
}
// AddState implements input.EventDatabase
func (d *Database) AddState(
ctx context.Context,
roomNID types.RoomNID,
stateBlockNIDs []types.StateBlockNID,
state []types.StateEntry,
) (types.StateSnapshotNID, error) {
if len(state) > 0 {
stateBlockNID, err := d.statements.selectNextStateBlockNID(ctx)
if err != nil {
return 0, err
}
if err = d.statements.bulkInsertStateData(ctx, stateBlockNID, state); err != nil {
return 0, err
}
stateBlockNIDs = append(stateBlockNIDs[:len(stateBlockNIDs):len(stateBlockNIDs)], stateBlockNID)
}
return d.statements.insertState(ctx, roomNID, stateBlockNIDs)
}
// SetState implements input.EventDatabase
func (d *Database) SetState(
ctx context.Context, eventNID types.EventNID, stateNID types.StateSnapshotNID,
) error {
return d.statements.updateEventState(ctx, eventNID, stateNID)
}
// StateAtEventIDs implements input.EventDatabase
func (d *Database) StateAtEventIDs(
ctx context.Context, eventIDs []string,
) ([]types.StateAtEvent, error) {
return d.statements.bulkSelectStateAtEventByID(ctx, eventIDs)
}
// StateBlockNIDs implements state.RoomStateDatabase
func (d *Database) StateBlockNIDs(
ctx context.Context, stateNIDs []types.StateSnapshotNID,
) ([]types.StateBlockNIDList, error) {
return d.statements.bulkSelectStateBlockNIDs(ctx, stateNIDs)
}
// StateEntries implements state.RoomStateDatabase
func (d *Database) StateEntries(
ctx context.Context, stateBlockNIDs []types.StateBlockNID,
) ([]types.StateEntryList, error) {
return d.statements.bulkSelectStateBlockEntries(ctx, stateBlockNIDs)
}
// SnapshotNIDFromEventID implements state.RoomStateDatabase
func (d *Database) SnapshotNIDFromEventID(
ctx context.Context, eventID string,
) (types.StateSnapshotNID, error) {
_, stateNID, err := d.statements.selectEvent(ctx, eventID)
return stateNID, err
}
// EventIDs implements input.RoomEventDatabase
func (d *Database) EventIDs(
ctx context.Context, eventNIDs []types.EventNID,
) (map[types.EventNID]string, error) {
return d.statements.bulkSelectEventID(ctx, eventNIDs)
}
// GetLatestEventsForUpdate implements input.EventDatabase
func (d *Database) GetLatestEventsForUpdate(
ctx context.Context, roomNID types.RoomNID,
) (types.RoomRecentEventsUpdater, error) {
txn, err := d.db.Begin()
if err != nil {
return nil, err
}
eventNIDs, lastEventNIDSent, currentStateSnapshotNID, err :=
d.statements.selectLatestEventsNIDsForUpdate(ctx, txn, roomNID)
if err != nil {
txn.Rollback() // nolint: errcheck
return nil, err
}
stateAndRefs, err := d.statements.bulkSelectStateAtEventAndReference(ctx, txn, eventNIDs)
if err != nil {
txn.Rollback() // nolint: errcheck
return nil, err
}
var lastEventIDSent string
if lastEventNIDSent != 0 {
lastEventIDSent, err = d.statements.selectEventID(ctx, txn, lastEventNIDSent)
if err != nil {
txn.Rollback() // nolint: errcheck
return nil, err
}
}
return &roomRecentEventsUpdater{
transaction{ctx, txn}, d, roomNID, stateAndRefs, lastEventIDSent, currentStateSnapshotNID,
}, nil
}
// GetTransactionEventID implements input.EventDatabase
func (d *Database) GetTransactionEventID(
ctx context.Context, transactionID string,
deviceID string, userID string,
) (string, error) {
eventID, err := d.statements.selectTransactionEventID(ctx, transactionID, deviceID, userID)
if err == sql.ErrNoRows {
return "", nil
}
return eventID, err
}
type roomRecentEventsUpdater struct {
transaction
d *Database
roomNID types.RoomNID
latestEvents []types.StateAtEventAndReference
lastEventIDSent string
currentStateSnapshotNID types.StateSnapshotNID
}
// LatestEvents implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) LatestEvents() []types.StateAtEventAndReference {
return u.latestEvents
}
// LastEventIDSent implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) LastEventIDSent() string {
return u.lastEventIDSent
}
// CurrentStateSnapshotNID implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) CurrentStateSnapshotNID() types.StateSnapshotNID {
return u.currentStateSnapshotNID
}
// StorePreviousEvents implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) StorePreviousEvents(eventNID types.EventNID, previousEventReferences []gomatrixserverlib.EventReference) error {
for _, ref := range previousEventReferences {
if err := u.d.statements.insertPreviousEvent(u.ctx, u.txn, ref.EventID, ref.EventSHA256, eventNID); err != nil {
return err
}
}
return nil
}
// IsReferenced implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) IsReferenced(eventReference gomatrixserverlib.EventReference) (bool, error) {
err := u.d.statements.selectPreviousEventExists(u.ctx, u.txn, eventReference.EventID, eventReference.EventSHA256)
if err == nil {
return true, nil
}
if err == sql.ErrNoRows {
return false, nil
}
return false, err
}
// SetLatestEvents implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) SetLatestEvents(
roomNID types.RoomNID, latest []types.StateAtEventAndReference, lastEventNIDSent types.EventNID,
currentStateSnapshotNID types.StateSnapshotNID,
) error {
eventNIDs := make([]types.EventNID, len(latest))
for i := range latest {
eventNIDs[i] = latest[i].EventNID
}
return u.d.statements.updateLatestEventNIDs(u.ctx, u.txn, roomNID, eventNIDs, lastEventNIDSent, currentStateSnapshotNID)
}
// HasEventBeenSent implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) HasEventBeenSent(eventNID types.EventNID) (bool, error) {
return u.d.statements.selectEventSentToOutput(u.ctx, u.txn, eventNID)
}
// MarkEventAsSent implements types.RoomRecentEventsUpdater
func (u *roomRecentEventsUpdater) MarkEventAsSent(eventNID types.EventNID) error {
return u.d.statements.updateEventSentToOutput(u.ctx, u.txn, eventNID)
}
func (u *roomRecentEventsUpdater) MembershipUpdater(targetUserNID types.EventStateKeyNID) (types.MembershipUpdater, error) {
return u.d.membershipUpdaterTxn(u.ctx, u.txn, u.roomNID, targetUserNID)
}
// RoomNID implements query.RoomserverQueryAPIDB
func (d *Database) RoomNID(ctx context.Context, roomID string) (types.RoomNID, error) {
roomNID, err := d.statements.selectRoomNID(ctx, nil, roomID)
if err == sql.ErrNoRows {
return 0, nil
}
return roomNID, err
}
// LatestEventIDs implements query.RoomserverQueryAPIDatabase
func (d *Database) LatestEventIDs(
ctx context.Context, roomNID types.RoomNID,
) ([]gomatrixserverlib.EventReference, types.StateSnapshotNID, int64, error) {
eventNIDs, currentStateSnapshotNID, err := d.statements.selectLatestEventNIDs(ctx, roomNID)
if err != nil {
return nil, 0, 0, err
}
references, err := d.statements.bulkSelectEventReference(ctx, eventNIDs)
if err != nil {
return nil, 0, 0, err
}
depth, err := d.statements.selectMaxEventDepth(ctx, eventNIDs)
if err != nil {
return nil, 0, 0, err
}
return references, currentStateSnapshotNID, depth, nil
}
// GetInvitesForUser implements query.RoomserverQueryAPIDatabase
func (d *Database) GetInvitesForUser(
ctx context.Context,
roomNID types.RoomNID,
targetUserNID types.EventStateKeyNID,
) (senderUserIDs []types.EventStateKeyNID, err error) {
return d.statements.selectInviteActiveForUserInRoom(ctx, targetUserNID, roomNID)
}
// SetRoomAlias implements alias.RoomserverAliasAPIDB
func (d *Database) SetRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) error {
return d.statements.insertRoomAlias(ctx, alias, roomID, creatorUserID)
}
// GetRoomIDForAlias implements alias.RoomserverAliasAPIDB
func (d *Database) GetRoomIDForAlias(ctx context.Context, alias string) (string, error) {
return d.statements.selectRoomIDFromAlias(ctx, alias)
}
// GetAliasesForRoomID implements alias.RoomserverAliasAPIDB
func (d *Database) GetAliasesForRoomID(ctx context.Context, roomID string) ([]string, error) {
return d.statements.selectAliasesFromRoomID(ctx, roomID)
}
// GetCreatorIDForAlias implements alias.RoomserverAliasAPIDB
func (d *Database) GetCreatorIDForAlias(
ctx context.Context, alias string,
) (string, error) {
return d.statements.selectCreatorIDFromAlias(ctx, alias)
}
// RemoveRoomAlias implements alias.RoomserverAliasAPIDB
func (d *Database) RemoveRoomAlias(ctx context.Context, alias string) error {
return d.statements.deleteRoomAlias(ctx, alias)
}
// StateEntriesForTuples implements state.RoomStateDatabase
func (d *Database) StateEntriesForTuples(
ctx context.Context,
stateBlockNIDs []types.StateBlockNID,
stateKeyTuples []types.StateKeyTuple,
) ([]types.StateEntryList, error) {
return d.statements.bulkSelectFilteredStateBlockEntries(
ctx, stateBlockNIDs, stateKeyTuples,
)
}
// MembershipUpdater implements input.RoomEventDatabase
func (d *Database) MembershipUpdater(
ctx context.Context, roomID, targetUserID string,
) (types.MembershipUpdater, error) {
txn, err := d.db.Begin()
if err != nil {
return nil, err
}
succeeded := false
defer func() {
if !succeeded {
txn.Rollback() // nolint: errcheck
}
}()
roomNID, err := d.assignRoomNID(ctx, txn, roomID)
if err != nil {
return nil, err
}
targetUserNID, err := d.assignStateKeyNID(ctx, txn, targetUserID)
if err != nil {
return nil, err
}
updater, err := d.membershipUpdaterTxn(ctx, txn, roomNID, targetUserNID)
if err != nil {
return nil, err
}
succeeded = true
return updater, nil
}
type membershipUpdater struct {
transaction
d *Database
roomNID types.RoomNID
targetUserNID types.EventStateKeyNID
membership membershipState
}
func (d *Database) membershipUpdaterTxn(
ctx context.Context,
txn *sql.Tx,
roomNID types.RoomNID,
targetUserNID types.EventStateKeyNID,
) (types.MembershipUpdater, error) {
if err := d.statements.insertMembership(ctx, txn, roomNID, targetUserNID); err != nil {
return nil, err
}
membership, err := d.statements.selectMembershipForUpdate(ctx, txn, roomNID, targetUserNID)
if err != nil {
return nil, err
}
return &membershipUpdater{
transaction{ctx, txn}, d, roomNID, targetUserNID, membership,
}, nil
}
// IsInvite implements types.MembershipUpdater
func (u *membershipUpdater) IsInvite() bool {
return u.membership == membershipStateInvite
}
// IsJoin implements types.MembershipUpdater
func (u *membershipUpdater) IsJoin() bool {
return u.membership == membershipStateJoin
}
// IsLeave implements types.MembershipUpdater
func (u *membershipUpdater) IsLeave() bool {
return u.membership == membershipStateLeaveOrBan
}
// SetToInvite implements types.MembershipUpdater
func (u *membershipUpdater) SetToInvite(event gomatrixserverlib.Event) (bool, error) {
senderUserNID, err := u.d.assignStateKeyNID(u.ctx, u.txn, event.Sender())
if err != nil {
return false, err
}
inserted, err := u.d.statements.insertInviteEvent(
u.ctx, u.txn, event.EventID(), u.roomNID, u.targetUserNID, senderUserNID, event.JSON(),
)
if err != nil {
return false, err
}
if u.membership != membershipStateInvite {
if err = u.d.statements.updateMembership(
u.ctx, u.txn, u.roomNID, u.targetUserNID, senderUserNID, membershipStateInvite, 0,
); err != nil {
return false, err
}
}
return inserted, nil
}
// SetToJoin implements types.MembershipUpdater
func (u *membershipUpdater) SetToJoin(senderUserID string, eventID string, isUpdate bool) ([]string, error) {
var inviteEventIDs []string
senderUserNID, err := u.d.assignStateKeyNID(u.ctx, u.txn, senderUserID)
if err != nil {
return nil, err
}
// If this is a join event update, there is no invite to update
if !isUpdate {
inviteEventIDs, err = u.d.statements.updateInviteRetired(
u.ctx, u.txn, u.roomNID, u.targetUserNID,
)
if err != nil {
return nil, err
}
}
// Look up the NID of the new join event
nIDs, err := u.d.EventNIDs(u.ctx, []string{eventID})
if err != nil {
return nil, err
}
if u.membership != membershipStateJoin || isUpdate {
if err = u.d.statements.updateMembership(
u.ctx, u.txn, u.roomNID, u.targetUserNID, senderUserNID,
membershipStateJoin, nIDs[eventID],
); err != nil {
return nil, err
}
}
return inviteEventIDs, nil
}
// SetToLeave implements types.MembershipUpdater
func (u *membershipUpdater) SetToLeave(senderUserID string, eventID string) ([]string, error) {
senderUserNID, err := u.d.assignStateKeyNID(u.ctx, u.txn, senderUserID)
if err != nil {
return nil, err
}
inviteEventIDs, err := u.d.statements.updateInviteRetired(
u.ctx, u.txn, u.roomNID, u.targetUserNID,
)
if err != nil {
return nil, err
}
// Look up the NID of the new leave event
nIDs, err := u.d.EventNIDs(u.ctx, []string{eventID})
if err != nil {
return nil, err
}
if u.membership != membershipStateLeaveOrBan {
if err = u.d.statements.updateMembership(
u.ctx, u.txn, u.roomNID, u.targetUserNID, senderUserNID,
membershipStateLeaveOrBan, nIDs[eventID],
); err != nil {
return nil, err
}
}
return inviteEventIDs, nil
}
// GetMembership implements query.RoomserverQueryAPIDB
func (d *Database) GetMembership(
ctx context.Context, roomNID types.RoomNID, requestSenderUserID string,
) (membershipEventNID types.EventNID, stillInRoom bool, err error) {
requestSenderUserNID, err := d.assignStateKeyNID(ctx, nil, requestSenderUserID)
if err != nil {
return
}
senderMembershipEventNID, senderMembership, err :=
d.statements.selectMembershipFromRoomAndTarget(
ctx, roomNID, requestSenderUserNID,
)
if err == sql.ErrNoRows {
// The user has never been a member of that room
return 0, false, nil
} else if err != nil {
return
}
return senderMembershipEventNID, senderMembership == membershipStateJoin, nil
}
// GetMembershipEventNIDsForRoom implements query.RoomserverQueryAPIDB
func (d *Database) GetMembershipEventNIDsForRoom(
ctx context.Context, roomNID types.RoomNID, joinOnly bool,
) ([]types.EventNID, error) {
if joinOnly {
return d.statements.selectMembershipsFromRoomAndMembership(
ctx, roomNID, membershipStateJoin,
)
}
return d.statements.selectMembershipsFromRoom(ctx, roomNID)
}
// EventsFromIDs implements query.RoomserverQueryAPIEventDB
func (d *Database) EventsFromIDs(ctx context.Context, eventIDs []string) ([]types.Event, error) {
nidMap, err := d.EventNIDs(ctx, eventIDs)
if err != nil {
return nil, err
}
var nids []types.EventNID
for _, nid := range nidMap {
nids = append(nids, nid)
}
return d.Events(ctx, nids)
}
type transaction struct {
ctx context.Context
txn *sql.Tx
}
// Commit implements types.Transaction
func (t *transaction) Commit() error {
return t.txn.Commit()
}
// Rollback implements types.Transaction
func (t *transaction) Rollback() error {
return t.txn.Rollback()
}