mirror of
https://github.com/1f349/dendrite.git
synced 2024-11-22 03:31:41 +00:00
Use pull consumers (#2140)
* Pull consumers * Pull consumers * Only nuke consumers if they are push consumers * Clean up old consumers * Better error handling * Update comments
This commit is contained in:
parent
2dee706f9e
commit
c773b038bb
@ -34,7 +34,7 @@ import (
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type OutputRoomEventConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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durable string
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topic string
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asDB storage.Database
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rsAPI api.RoomserverInternalAPI
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@ -66,14 +66,15 @@ func NewOutputRoomEventConsumer(
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// Start consuming from room servers
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func (s *OutputRoomEventConsumer) Start() error {
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_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
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return err
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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}
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// onMessage is called when the appservice component receives a new event from
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// the room server output log.
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func (s *OutputRoomEventConsumer) onMessage(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (s *OutputRoomEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
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// Parse out the event JSON
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var output api.OutputEvent
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if err := json.Unmarshal(msg.Data, &output); err != nil {
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@ -96,7 +97,6 @@ func (s *OutputRoomEventConsumer) onMessage(msg *nats.Msg) {
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}
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return true
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})
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}
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// filterRoomserverEvents takes in events and decides whether any of them need
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@ -34,7 +34,7 @@ import (
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type OutputEDUConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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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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@ -66,13 +66,22 @@ func NewOutputEDUConsumer(
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// Start consuming from EDU servers
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func (t *OutputEDUConsumer) Start() error {
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if _, err := t.jetstream.Subscribe(t.typingTopic, t.onTypingEvent, t.durable); err != nil {
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if err := jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.typingTopic, t.durable, t.onTypingEvent,
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nats.DeliverAll(), nats.ManualAck(),
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); err != nil {
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return err
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}
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if _, err := t.jetstream.Subscribe(t.sendToDeviceTopic, t.onSendToDeviceEvent, t.durable); err != nil {
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if err := jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.sendToDeviceTopic, t.durable, t.onSendToDeviceEvent,
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nats.DeliverAll(), nats.ManualAck(),
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); err != nil {
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return err
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}
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if _, err := t.jetstream.Subscribe(t.receiptTopic, t.onReceiptEvent, t.durable); err != nil {
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if err := jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.receiptTopic, t.durable, t.onReceiptEvent,
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nats.DeliverAll(), nats.ManualAck(),
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); err != nil {
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return err
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}
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return nil
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@ -80,9 +89,8 @@ func (t *OutputEDUConsumer) Start() error {
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// onSendToDeviceEvent is called in response to a message received on the
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// send-to-device events topic from the EDU server.
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func (t *OutputEDUConsumer) onSendToDeviceEvent(msg *nats.Msg) {
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func (t *OutputEDUConsumer) onSendToDeviceEvent(ctx context.Context, msg *nats.Msg) bool {
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// Extract the send-to-device event from msg.
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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var ote api.OutputSendToDeviceEvent
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if err := json.Unmarshal(msg.Data, &ote); err != nil {
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log.WithError(err).Errorf("eduserver output log: message parse failed (expected send-to-device)")
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@ -133,13 +141,11 @@ func (t *OutputEDUConsumer) onSendToDeviceEvent(msg *nats.Msg) {
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}
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return true
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})
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}
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// onTypingEvent is called in response to a message received on the typing
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// events topic from the EDU server.
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func (t *OutputEDUConsumer) onTypingEvent(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (t *OutputEDUConsumer) onTypingEvent(ctx context.Context, msg *nats.Msg) bool {
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// Extract the typing event from msg.
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var ote api.OutputTypingEvent
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if err := json.Unmarshal(msg.Data, &ote); err != nil {
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@ -160,7 +166,7 @@ func (t *OutputEDUConsumer) onTypingEvent(msg *nats.Msg) {
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return true
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}
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joined, err := t.db.GetJoinedHosts(t.ctx, ote.Event.RoomID)
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joined, err := t.db.GetJoinedHosts(ctx, ote.Event.RoomID)
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if err != nil {
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log.WithError(err).WithField("room_id", ote.Event.RoomID).Error("failed to get joined hosts for room")
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return false
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@ -187,13 +193,11 @@ func (t *OutputEDUConsumer) onTypingEvent(msg *nats.Msg) {
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}
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return true
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})
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}
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// onReceiptEvent is called in response to a message received on the receipt
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// events topic from the EDU server.
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func (t *OutputEDUConsumer) onReceiptEvent(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (t *OutputEDUConsumer) onReceiptEvent(ctx context.Context, msg *nats.Msg) bool {
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// Extract the typing event from msg.
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var receipt api.OutputReceiptEvent
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if err := json.Unmarshal(msg.Data, &receipt); err != nil {
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@ -212,7 +216,7 @@ func (t *OutputEDUConsumer) onReceiptEvent(msg *nats.Msg) {
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return true
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}
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joined, err := t.db.GetJoinedHosts(t.ctx, receipt.RoomID)
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joined, err := t.db.GetJoinedHosts(ctx, receipt.RoomID)
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if err != nil {
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log.WithError(err).WithField("room_id", receipt.RoomID).Error("failed to get joined hosts for room")
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return false
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@ -250,5 +254,4 @@ func (t *OutputEDUConsumer) onReceiptEvent(msg *nats.Msg) {
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}
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return true
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})
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}
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@ -37,7 +37,7 @@ type OutputRoomEventConsumer struct {
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cfg *config.FederationAPI
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rsAPI api.RoomserverInternalAPI
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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durable string
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db storage.Database
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queues *queue.OutgoingQueues
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topic string
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@ -66,20 +66,17 @@ func NewOutputRoomEventConsumer(
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// Start consuming from room servers
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func (s *OutputRoomEventConsumer) Start() error {
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_, err := s.jetstream.Subscribe(
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s.topic, s.onMessage, s.durable,
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nats.DeliverAll(),
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nats.ManualAck(),
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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return err
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}
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// onMessage is called when the federation server receives a new event from the room server output log.
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// It is unsafe to call this with messages for the same room in multiple gorountines
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// because updates it will likely fail with a types.EventIDMismatchError when it
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// realises that it cannot update the room state using the deltas.
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func (s *OutputRoomEventConsumer) onMessage(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (s *OutputRoomEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
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// Parse out the event JSON
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var output api.OutputEvent
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if err := json.Unmarshal(msg.Data, &output); err != nil {
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@ -133,7 +130,6 @@ func (s *OutputRoomEventConsumer) onMessage(msg *nats.Msg) {
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}
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return true
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})
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}
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// processInboundPeek starts tracking a new federated inbound peek (replacing the existing one if any)
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@ -41,7 +41,7 @@ type RoomserverInternalAPI struct {
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fsAPI fsAPI.FederationInternalAPI
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asAPI asAPI.AppServiceQueryAPI
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JetStream nats.JetStreamContext
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Durable nats.SubOpt
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Durable string
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InputRoomEventTopic string // JetStream topic for new input room events
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OutputRoomEventTopic string // JetStream topic for new output room events
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PerspectiveServerNames []gomatrixserverlib.ServerName
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@ -87,7 +87,7 @@ func (r *RoomserverInternalAPI) SetFederationAPI(fsAPI fsAPI.FederationInternalA
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InputRoomEventTopic: r.InputRoomEventTopic,
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OutputRoomEventTopic: r.OutputRoomEventTopic,
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JetStream: r.JetStream,
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Durable: r.Durable,
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Durable: nats.Durable(r.Durable),
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ServerName: r.Cfg.Matrix.ServerName,
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FSAPI: fsAPI,
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KeyRing: keyRing,
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@ -2,8 +2,6 @@ package config
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import (
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"fmt"
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"github.com/nats-io/nats.go"
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)
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type JetStream struct {
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@ -25,8 +23,8 @@ func (c *JetStream) TopicFor(name string) string {
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return fmt.Sprintf("%s%s", c.TopicPrefix, name)
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}
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func (c *JetStream) Durable(name string) nats.SubOpt {
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return nats.Durable(c.TopicFor(name))
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func (c *JetStream) Durable(name string) string {
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return c.TopicFor(name)
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}
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func (c *JetStream) Defaults(generate bool) {
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@ -1,12 +1,81 @@
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package jetstream
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import "github.com/nats-io/nats.go"
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import (
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"context"
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"fmt"
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func WithJetStreamMessage(msg *nats.Msg, f func(msg *nats.Msg) bool) {
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_ = msg.InProgress()
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if f(msg) {
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_ = msg.Ack()
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"github.com/nats-io/nats.go"
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"github.com/sirupsen/logrus"
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)
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func JetStreamConsumer(
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ctx context.Context, js nats.JetStreamContext, subj, durable string,
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f func(ctx context.Context, msg *nats.Msg) bool,
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opts ...nats.SubOpt,
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) error {
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defer func() {
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// If there are existing consumers from before they were pull
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// consumers, we need to clean up the old push consumers. However,
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// in order to not affect the interest-based policies, we need to
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// do this *after* creating the new pull consumers, which have
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// "Pull" suffixed to their name.
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if _, err := js.ConsumerInfo(subj, durable); err == nil {
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if err := js.DeleteConsumer(subj, durable); err != nil {
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logrus.WithContext(ctx).Warnf("Failed to clean up old consumer %q", durable)
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}
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}
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}()
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name := durable + "Pull"
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sub, err := js.PullSubscribe(subj, name, opts...)
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if err != nil {
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return fmt.Errorf("nats.SubscribeSync: %w", err)
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}
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go func() {
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for {
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// The context behaviour here is surprising — we supply a context
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// so that we can interrupt the fetch if we want, but NATS will still
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// enforce its own deadline (roughly 5 seconds by default). Therefore
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// it is our responsibility to check whether our context expired or
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// not when a context error is returned. Footguns. Footguns everywhere.
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msgs, err := sub.Fetch(1, nats.Context(ctx))
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if err != nil {
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if err == context.Canceled || err == context.DeadlineExceeded {
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// Work out whether it was the JetStream context that expired
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// or whether it was our supplied context.
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select {
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case <-ctx.Done():
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// The supplied context expired, so we want to stop the
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// consumer altogether.
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return
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default:
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// The JetStream context expired, so the fetch probably
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// just timed out and we should try again.
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continue
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}
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} else {
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_ = msg.Nak()
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// Something else went wrong, so we'll panic.
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logrus.WithContext(ctx).WithField("subject", subj).Fatal(err)
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}
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}
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if len(msgs) < 1 {
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continue
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}
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msg := msgs[0]
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if err = msg.InProgress(); err != nil {
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logrus.WithContext(ctx).WithField("subject", subj).Warn(fmt.Errorf("msg.InProgress: %w", err))
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continue
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}
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if f(ctx, msg) {
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if err = msg.Ack(); err != nil {
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logrus.WithContext(ctx).WithField("subject", subj).Warn(fmt.Errorf("msg.Ack: %w", err))
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}
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} else {
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if err = msg.Nak(); err != nil {
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logrus.WithContext(ctx).WithField("subject", subj).Warn(fmt.Errorf("msg.Nak: %w", err))
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}
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}
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}
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}()
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return nil
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}
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@ -34,7 +34,7 @@ import (
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type OutputClientDataConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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durable string
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topic string
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db storage.Database
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stream types.StreamProvider
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@ -63,15 +63,16 @@ func NewOutputClientDataConsumer(
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// Start consuming from room servers
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func (s *OutputClientDataConsumer) Start() error {
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_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
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return err
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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}
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// onMessage is called when the sync server receives a new event from the client API server output log.
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// It is not safe for this function to be called from multiple goroutines, or else the
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// sync stream position may race and be incorrectly calculated.
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func (s *OutputClientDataConsumer) onMessage(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (s *OutputClientDataConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
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// Parse out the event JSON
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userID := msg.Header.Get(jetstream.UserID)
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var output eventutil.AccountData
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@ -103,5 +104,4 @@ func (s *OutputClientDataConsumer) onMessage(msg *nats.Msg) {
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s.notifier.OnNewAccountData(userID, types.StreamingToken{AccountDataPosition: streamPos})
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return true
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})
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}
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@ -34,7 +34,7 @@ import (
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type OutputReceiptEventConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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durable string
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topic string
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db storage.Database
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stream types.StreamProvider
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@ -64,12 +64,13 @@ func NewOutputReceiptEventConsumer(
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// Start consuming from EDU api
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func (s *OutputReceiptEventConsumer) Start() error {
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_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
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return err
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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}
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func (s *OutputReceiptEventConsumer) onMessage(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (s *OutputReceiptEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
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var output api.OutputReceiptEvent
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if err := json.Unmarshal(msg.Data, &output); err != nil {
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// If the message was invalid, log it and move on to the next message in the stream
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@ -95,5 +96,4 @@ func (s *OutputReceiptEventConsumer) onMessage(msg *nats.Msg) {
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s.notifier.OnNewReceipt(output.RoomID, types.StreamingToken{ReceiptPosition: streamPos})
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return true
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})
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}
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|
@ -36,7 +36,7 @@ import (
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type OutputSendToDeviceEventConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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durable string
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topic string
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db storage.Database
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serverName gomatrixserverlib.ServerName // our server name
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@ -68,12 +68,13 @@ func NewOutputSendToDeviceEventConsumer(
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// Start consuming from EDU api
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func (s *OutputSendToDeviceEventConsumer) Start() error {
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_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
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return err
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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}
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func (s *OutputSendToDeviceEventConsumer) onMessage(msg *nats.Msg) {
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jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
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func (s *OutputSendToDeviceEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
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var output api.OutputSendToDeviceEvent
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if err := json.Unmarshal(msg.Data, &output); err != nil {
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// If the message was invalid, log it and move on to the next message in the stream
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@ -115,5 +116,4 @@ func (s *OutputSendToDeviceEventConsumer) onMessage(msg *nats.Msg) {
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)
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return true
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})
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}
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|
@ -35,7 +35,7 @@ import (
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type OutputTypingEventConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable nats.SubOpt
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durable string
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topic string
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eduCache *cache.EDUCache
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stream types.StreamProvider
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@ -66,12 +66,13 @@ func NewOutputTypingEventConsumer(
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// Start consuming from EDU api
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func (s *OutputTypingEventConsumer) Start() error {
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_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
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return err
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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}
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|
||||
func (s *OutputTypingEventConsumer) onMessage(msg *nats.Msg) {
|
||||
jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
|
||||
func (s *OutputTypingEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
|
||||
var output api.OutputTypingEvent
|
||||
if err := json.Unmarshal(msg.Data, &output); err != nil {
|
||||
// If the message was invalid, log it and move on to the next message in the stream
|
||||
@ -102,5 +103,4 @@ func (s *OutputTypingEventConsumer) onMessage(msg *nats.Msg) {
|
||||
s.notifier.OnNewTyping(output.Event.RoomID, types.StreamingToken{TypingPosition: typingPos})
|
||||
|
||||
return true
|
||||
})
|
||||
}
|
||||
|
@ -38,7 +38,7 @@ type OutputRoomEventConsumer struct {
|
||||
cfg *config.SyncAPI
|
||||
rsAPI api.RoomserverInternalAPI
|
||||
jetstream nats.JetStreamContext
|
||||
durable nats.SubOpt
|
||||
durable string
|
||||
topic string
|
||||
db storage.Database
|
||||
pduStream types.StreamProvider
|
||||
@ -73,19 +73,16 @@ func NewOutputRoomEventConsumer(
|
||||
|
||||
// Start consuming from room servers
|
||||
func (s *OutputRoomEventConsumer) Start() error {
|
||||
_, err := s.jetstream.Subscribe(
|
||||
s.topic, s.onMessage, s.durable,
|
||||
nats.DeliverAll(),
|
||||
nats.ManualAck(),
|
||||
return jetstream.JetStreamConsumer(
|
||||
s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
|
||||
nats.DeliverAll(), nats.ManualAck(),
|
||||
)
|
||||
return err
|
||||
}
|
||||
|
||||
// onMessage is called when the sync server receives a new event from the room server output log.
|
||||
// It is not safe for this function to be called from multiple goroutines, or else the
|
||||
// sync stream position may race and be incorrectly calculated.
|
||||
func (s *OutputRoomEventConsumer) onMessage(msg *nats.Msg) {
|
||||
jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
|
||||
func (s *OutputRoomEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
|
||||
// Parse out the event JSON
|
||||
var err error
|
||||
var output api.OutputEvent
|
||||
@ -131,7 +128,6 @@ func (s *OutputRoomEventConsumer) onMessage(msg *nats.Msg) {
|
||||
}
|
||||
|
||||
return true
|
||||
})
|
||||
}
|
||||
|
||||
func (s *OutputRoomEventConsumer) onRedactEvent(
|
||||
|
Loading…
Reference in New Issue
Block a user