dendrite/federationsender/storage/postgres/storage.go

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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/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/federationsender/types"
)
// Database stores information needed by the federation sender
type Database struct {
joinedHostsStatements
roomStatements
common.PartitionOffsetStatements
db *sql.DB
}
// NewDatabase opens a new database
func NewDatabase(dataSourceName string) (*Database, error) {
var result Database
var err error
if result.db, err = sql.Open("postgres", dataSourceName); err != nil {
return nil, err
}
if err = result.prepare(); err != nil {
return nil, err
}
return &result, nil
}
func (d *Database) prepare() error {
var err error
if err = d.joinedHostsStatements.prepare(d.db); err != nil {
return err
}
if err = d.roomStatements.prepare(d.db); err != nil {
return err
}
return d.PartitionOffsetStatements.Prepare(d.db, "federationsender")
}
// UpdateRoom updates the joined hosts for a room and returns what the joined
// hosts were before the update, or nil if this was a duplicate message.
// This is called when we receive a message from kafka, so we pass in
// oldEventID and newEventID to check that we haven't missed any messages or
// this isn't a duplicate message.
func (d *Database) UpdateRoom(
ctx context.Context,
roomID, oldEventID, newEventID string,
addHosts []types.JoinedHost,
removeHosts []string,
) (joinedHosts []types.JoinedHost, err error) {
err = common.WithTransaction(d.db, func(txn *sql.Tx) error {
err = d.insertRoom(ctx, txn, roomID)
if err != nil {
return err
}
lastSentEventID, err := d.selectRoomForUpdate(ctx, txn, roomID)
if err != nil {
return err
}
if lastSentEventID == newEventID {
// We've handled this message before, so let's just ignore it.
// We can only get a duplicate for the last message we processed,
// so its enough just to compare the newEventID with lastSentEventID
return nil
}
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>
2020-02-13 17:27:33 +00:00
if lastSentEventID != "" && lastSentEventID != oldEventID {
return types.EventIDMismatchError{
DatabaseID: lastSentEventID, RoomServerID: oldEventID,
}
}
joinedHosts, err = d.selectJoinedHostsWithTx(ctx, txn, roomID)
if err != nil {
return err
}
for _, add := range addHosts {
err = d.insertJoinedHosts(ctx, txn, roomID, add.MemberEventID, add.ServerName)
if err != nil {
return err
}
}
if err = d.deleteJoinedHosts(ctx, txn, removeHosts); err != nil {
return err
}
return d.updateRoom(ctx, txn, roomID, newEventID)
})
return
}
// GetJoinedHosts returns the currently joined hosts for room,
// as known to federationserver.
// Returns an error if something goes wrong.
func (d *Database) GetJoinedHosts(
ctx context.Context, roomID string,
) ([]types.JoinedHost, error) {
return d.selectJoinedHosts(ctx, roomID)
}