143 lines
3.9 KiB
Go
143 lines
3.9 KiB
Go
// Copyright 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 shared
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import (
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"context"
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"database/sql"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/matrix-org/gomatrixserverlib"
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)
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// AssociateEDUWithDestination creates an association that the
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// destination queues will use to determine which JSON blobs to send
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// to which servers.
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func (d *Database) AssociateEDUWithDestination(
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ctx context.Context,
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serverName gomatrixserverlib.ServerName,
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receipt *Receipt,
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) error {
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return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
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for _, nid := range receipt.nids {
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if err := d.FederationSenderQueueEDUs.InsertQueueEDU(
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ctx, // context
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txn, // SQL transaction
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"", // TODO: EDU type for coalescing
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serverName, // destination server name
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nid, // NID from the federationsender_queue_json table
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); err != nil {
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return fmt.Errorf("InsertQueueEDU: %w", err)
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}
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}
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return nil
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})
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}
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// GetNextTransactionEDUs retrieves events from the database for
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// the next pending transaction, up to the limit specified.
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func (d *Database) GetNextTransactionEDUs(
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ctx context.Context,
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serverName gomatrixserverlib.ServerName,
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limit int,
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) (
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edus []*gomatrixserverlib.EDU,
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receipt *Receipt,
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err error,
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) {
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err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
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nids, err := d.FederationSenderQueueEDUs.SelectQueueEDUs(ctx, txn, serverName, limit)
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if err != nil {
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return fmt.Errorf("SelectQueueEDUs: %w", err)
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}
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receipt = &Receipt{
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nids: nids,
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}
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blobs, err := d.FederationSenderQueueJSON.SelectQueueJSON(ctx, txn, nids)
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if err != nil {
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return fmt.Errorf("SelectQueueJSON: %w", err)
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}
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for _, blob := range blobs {
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var event gomatrixserverlib.EDU
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if err := json.Unmarshal(blob, &event); err != nil {
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return fmt.Errorf("json.Unmarshal: %w", err)
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}
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edus = append(edus, &event)
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}
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return nil
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})
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return
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}
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// CleanEDUs cleans up all specified EDUs. This is done when a
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// transaction was sent successfully.
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func (d *Database) CleanEDUs(
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ctx context.Context,
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serverName gomatrixserverlib.ServerName,
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receipt *Receipt,
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) error {
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if receipt == nil {
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return errors.New("expected receipt")
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}
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return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
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if err := d.FederationSenderQueueEDUs.DeleteQueueEDUs(ctx, txn, serverName, receipt.nids); err != nil {
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return err
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}
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var deleteNIDs []int64
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for _, nid := range receipt.nids {
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count, err := d.FederationSenderQueueEDUs.SelectQueueEDUReferenceJSONCount(ctx, txn, nid)
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if err != nil {
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return fmt.Errorf("SelectQueueEDUReferenceJSONCount: %w", err)
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}
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if count == 0 {
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deleteNIDs = append(deleteNIDs, nid)
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}
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}
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if len(deleteNIDs) > 0 {
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if err := d.FederationSenderQueueJSON.DeleteQueueJSON(ctx, txn, deleteNIDs); err != nil {
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return fmt.Errorf("DeleteQueueJSON: %w", err)
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}
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}
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return nil
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})
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}
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// GetPendingEDUCount returns the number of EDUs waiting to be
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// sent for a given servername.
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func (d *Database) GetPendingEDUCount(
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ctx context.Context,
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serverName gomatrixserverlib.ServerName,
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) (int64, error) {
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return d.FederationSenderQueueEDUs.SelectQueueEDUCount(ctx, nil, serverName)
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}
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// GetPendingServerNames returns the server names that have EDUs
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// waiting to be sent.
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func (d *Database) GetPendingEDUServerNames(
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ctx context.Context,
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) ([]gomatrixserverlib.ServerName, error) {
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return d.FederationSenderQueueEDUs.SelectQueueEDUServerNames(ctx, nil)
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}
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