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// 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 producers
import (
"context"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/gomatrixserverlib"
)
// RoomserverProducer produces events for the roomserver to consume.
type RoomserverProducer struct {
RsAPI api.RoomserverInternalAPI
}
// NewRoomserverProducer creates a new RoomserverProducer
func NewRoomserverProducer(rsAPI api.RoomserverInternalAPI) *RoomserverProducer {
return &RoomserverProducer{
RsAPI: rsAPI,
}
}
// SendEvents writes the given events to the roomserver input log. The events are written with KindNew.
func (c *RoomserverProducer) SendEvents(
ctx context.Context, events []gomatrixserverlib.HeaderedEvent, sendAsServer gomatrixserverlib.ServerName,
txnID *api.TransactionID,
) (string, error) {
ires := make([]api.InputRoomEvent, len(events))
for i, event := range events {
ires[i] = api.InputRoomEvent{
Kind: api.KindNew,
Event: event,
AuthEventIDs: event.AuthEventIDs(),
SendAsServer: string(sendAsServer),
TransactionID: txnID,
}
}
return c.SendInputRoomEvents(ctx, ires)
}
// SendEventWithState writes an event with KindNew to the roomserver input log
// with the state at the event as KindOutlier before it.
func (c *RoomserverProducer) SendEventWithState(
ctx context.Context, state gomatrixserverlib.RespState, event gomatrixserverlib.HeaderedEvent,
) error {
outliers, err := state.Events()
if err != nil {
return err
}
var ires []api.InputRoomEvent
for _, outlier := range outliers {
ires = append(ires, api.InputRoomEvent{
Kind: api.KindOutlier,
Event: outlier.Headered(event.RoomVersion),
AuthEventIDs: outlier.AuthEventIDs(),
})
}
stateEventIDs := make([]string, len(state.StateEvents))
for i := range state.StateEvents {
stateEventIDs[i] = state.StateEvents[i].EventID()
}
ires = append(ires, api.InputRoomEvent{
Kind: api.KindNew,
Event: event,
AuthEventIDs: event.AuthEventIDs(),
HasState: true,
StateEventIDs: stateEventIDs,
})
_, err = c.SendInputRoomEvents(ctx, ires)
return err
}
// SendInputRoomEvents writes the given input room events to the roomserver input API.
func (c *RoomserverProducer) SendInputRoomEvents(
ctx context.Context, ires []api.InputRoomEvent,
) (eventID string, err error) {
request := api.InputRoomEventsRequest{InputRoomEvents: ires}
var response api.InputRoomEventsResponse
err = c.RsAPI.InputRoomEvents(ctx, &request, &response)
eventID = response.EventID
return
}
// SendInvite writes the invite event to the roomserver input API.
// This should only be needed for invite events that occur outside of a known room.
// If we are in the room then the event should be sent using the SendEvents method.
func (c *RoomserverProducer) SendInvite(
ctx context.Context, inviteEvent gomatrixserverlib.HeaderedEvent,
inviteRoomState []gomatrixserverlib.InviteV2StrippedState,
sendAsServer gomatrixserverlib.ServerName, txnID *api.TransactionID,
) error {
request := api.InputRoomEventsRequest{
InputInviteEvents: []api.InputInviteEvent{{
Event: inviteEvent,
InviteRoomState: inviteRoomState,
RoomVersion: inviteEvent.RoomVersion,
SendAsServer: string(sendAsServer),
TransactionID: txnID,
}},
}
var response api.InputRoomEventsResponse
return c.RsAPI.InputRoomEvents(ctx, &request, &response)
}
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