84 lines
2.8 KiB
Go
84 lines
2.8 KiB
Go
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// Copyright 2017-2018 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 postgres
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import (
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"context"
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"database/sql"
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"github.com/matrix-org/gomatrixserverlib"
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)
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// A Database implements gomatrixserverlib.KeyDatabase and is used to store
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// the public keys for other matrix servers.
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type Database struct {
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statements serverKeyStatements
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}
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// NewDatabase prepares a new key database.
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// It creates the necessary tables if they don't already exist.
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// It prepares all the SQL statements that it will use.
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// Returns an error if there was a problem talking to the database.
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func NewDatabase(dataSourceName string) (*Database, error) {
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db, err := sql.Open("postgres", dataSourceName)
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if err != nil {
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return nil, err
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}
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d := &Database{}
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err = d.statements.prepare(db)
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if err != nil {
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return nil, err
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}
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return d, nil
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}
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// FetcherName implements KeyFetcher
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func (d Database) FetcherName() string {
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return "KeyDatabase"
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}
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// FetchKeys implements gomatrixserverlib.KeyDatabase
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func (d *Database) FetchKeys(
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ctx context.Context,
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requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
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) (map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult, error) {
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return d.statements.bulkSelectServerKeys(ctx, requests)
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}
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// StoreKeys implements gomatrixserverlib.KeyDatabase
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func (d *Database) StoreKeys(
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ctx context.Context,
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keyMap map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult,
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) error {
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// TODO: Inserting all the keys within a single transaction may
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// be more efficient since the transaction overhead can be quite
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// high for a single insert statement.
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var lastErr error
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for request, keys := range keyMap {
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if err := d.statements.upsertServerKeys(ctx, request, keys); err != nil {
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// Rather than returning immediately on error we try to insert the
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// remaining keys.
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// Since we are inserting the keys outside of a transaction it is
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// possible for some of the inserts to succeed even though some
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// of the inserts have failed.
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// Ensuring that we always insert all the keys we can means that
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// this behaviour won't depend on the iteration order of the map.
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lastErr = err
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}
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}
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return lastErr
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}
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