113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
// Copyright 2018 New Vector Ltd
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// Copyright 2019-2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sqlite3
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import (
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"context"
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"database/sql"
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// Import SQLite database driver
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"github.com/matrix-org/dendrite/common"
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"github.com/matrix-org/gomatrixserverlib"
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_ "github.com/mattn/go-sqlite3"
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)
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// Database stores events intended to be later sent to application services
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type Database struct {
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events eventsStatements
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txnID txnStatements
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db *sql.DB
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}
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// NewDatabase opens a new database
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func NewDatabase(dataSourceName string) (*Database, error) {
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var result Database
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var err error
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if result.db, err = sql.Open(common.SQLiteDriverName(), dataSourceName); err != nil {
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return nil, err
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}
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if err = result.prepare(); err != nil {
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return nil, err
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}
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return &result, nil
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}
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func (d *Database) prepare() error {
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if err := d.events.prepare(d.db); err != nil {
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return err
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}
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return d.txnID.prepare(d.db)
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}
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// StoreEvent takes in a gomatrixserverlib.Event and stores it in the database
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// for a transaction worker to pull and later send to an application service.
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func (d *Database) StoreEvent(
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ctx context.Context,
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appServiceID string,
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event *gomatrixserverlib.Event,
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) error {
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return d.events.insertEvent(ctx, appServiceID, event)
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}
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// GetEventsWithAppServiceID returns a slice of events and their IDs intended to
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// be sent to an application service given its ID.
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func (d *Database) GetEventsWithAppServiceID(
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ctx context.Context,
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appServiceID string,
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limit int,
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) (int, int, []gomatrixserverlib.Event, bool, error) {
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return d.events.selectEventsByApplicationServiceID(ctx, appServiceID, limit)
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}
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// CountEventsWithAppServiceID returns the number of events destined for an
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// application service given its ID.
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func (d *Database) CountEventsWithAppServiceID(
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ctx context.Context,
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appServiceID string,
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) (int, error) {
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return d.events.countEventsByApplicationServiceID(ctx, appServiceID)
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}
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// UpdateTxnIDForEvents takes in an application service ID and a
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// and stores them in the DB, unless the pair already exists, in
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// which case it updates them.
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func (d *Database) UpdateTxnIDForEvents(
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ctx context.Context,
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appserviceID string,
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maxID, txnID int,
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) error {
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return d.events.updateTxnIDForEvents(ctx, appserviceID, maxID, txnID)
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}
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// RemoveEventsBeforeAndIncludingID removes all events from the database that
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// are less than or equal to a given maximum ID. IDs here are implemented as a
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// serial, thus this should always delete events in chronological order.
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func (d *Database) RemoveEventsBeforeAndIncludingID(
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ctx context.Context,
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appserviceID string,
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eventTableID int,
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) error {
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return d.events.deleteEventsBeforeAndIncludingID(ctx, appserviceID, eventTableID)
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}
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// GetLatestTxnID returns the latest available transaction id
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func (d *Database) GetLatestTxnID(
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ctx context.Context,
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) (int, error) {
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return d.txnID.selectTxnID(ctx)
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}
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