mirror of
https://github.com/matrix-org/dendrite
synced 2024-08-30 15:55:20 +02:00
144 lines
4.4 KiB
Go
144 lines
4.4 KiB
Go
// Copyright 2022 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 consumers
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import (
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"context"
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"encoding/json"
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"strconv"
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"github.com/matrix-org/dendrite/federationapi/queue"
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"github.com/matrix-org/dendrite/federationapi/storage"
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fedTypes "github.com/matrix-org/dendrite/federationapi/types"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/dendrite/setup/jetstream"
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"github.com/matrix-org/dendrite/setup/process"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/nats-io/nats.go"
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log "github.com/sirupsen/logrus"
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)
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// OutputReceiptConsumer consumes events that originate in the clientapi.
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type OutputPresenceConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable string
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db storage.Database
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queues *queue.OutgoingQueues
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ServerName gomatrixserverlib.ServerName
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topic string
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outboundPresenceEnabled bool
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}
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// NewOutputPresenceConsumer creates a new OutputPresenceConsumer. Call Start() to begin consuming events.
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func NewOutputPresenceConsumer(
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process *process.ProcessContext,
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cfg *config.FederationAPI,
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js nats.JetStreamContext,
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queues *queue.OutgoingQueues,
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store storage.Database,
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) *OutputPresenceConsumer {
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return &OutputPresenceConsumer{
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ctx: process.Context(),
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jetstream: js,
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queues: queues,
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db: store,
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ServerName: cfg.Matrix.ServerName,
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durable: cfg.Matrix.JetStream.Durable("FederationAPIPresenceConsumer"),
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topic: cfg.Matrix.JetStream.Prefixed(jetstream.OutputPresenceEvent),
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outboundPresenceEnabled: cfg.Matrix.Presence.EnableOutbound,
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}
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}
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// Start consuming from the clientapi
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func (t *OutputPresenceConsumer) Start() error {
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if !t.outboundPresenceEnabled {
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return nil
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}
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return jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.topic, t.durable, 1, t.onMessage,
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nats.DeliverAll(), nats.ManualAck(), nats.HeadersOnly(),
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)
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}
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// onMessage is called in response to a message received on the presence
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// events topic from the client api.
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func (t *OutputPresenceConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
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msg := msgs[0] // Guaranteed to exist if onMessage is called
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// only send presence events which originated from us
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userID := msg.Header.Get(jetstream.UserID)
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_, serverName, err := gomatrixserverlib.SplitID('@', userID)
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if err != nil {
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log.WithError(err).WithField("user_id", userID).Error("failed to extract domain from receipt sender")
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return true
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}
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if serverName != t.ServerName {
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return true
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}
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presence := msg.Header.Get("presence")
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ts, err := strconv.Atoi(msg.Header.Get("last_active_ts"))
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if err != nil {
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return true
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}
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joined, err := t.db.GetAllJoinedHosts(ctx)
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if err != nil {
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log.WithError(err).Error("failed to get joined hosts")
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return true
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}
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if len(joined) == 0 {
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return true
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}
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var statusMsg *string = nil
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if data, ok := msg.Header["status_msg"]; ok && len(data) > 0 {
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status := msg.Header.Get("status_msg")
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statusMsg = &status
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}
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p := types.PresenceInternal{LastActiveTS: gomatrixserverlib.Timestamp(ts)}
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content := fedTypes.Presence{
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Push: []fedTypes.PresenceContent{
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{
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CurrentlyActive: p.CurrentlyActive(),
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LastActiveAgo: p.LastActiveAgo(),
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Presence: presence,
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StatusMsg: statusMsg,
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UserID: userID,
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},
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},
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}
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edu := &gomatrixserverlib.EDU{
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Type: gomatrixserverlib.MPresence,
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Origin: string(t.ServerName),
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}
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if edu.Content, err = json.Marshal(content); err != nil {
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log.WithError(err).Error("failed to marshal EDU JSON")
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return true
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}
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log.Tracef("sending presence EDU to %d servers", len(joined))
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if err = t.queues.SendEDU(edu, t.ServerName, joined); err != nil {
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log.WithError(err).Error("failed to send EDU")
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return false
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}
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return true
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}
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