96 lines
3.4 KiB
Go
96 lines
3.4 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 consumers
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import (
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"context"
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"encoding/json"
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"github.com/Shopify/sarama"
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currentstateAPI "github.com/matrix-org/dendrite/currentstateserver/api"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/internal/config"
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"github.com/matrix-org/dendrite/keyserver/api"
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"github.com/matrix-org/dendrite/syncapi/storage"
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"github.com/matrix-org/gomatrixserverlib"
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log "github.com/sirupsen/logrus"
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)
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// OutputKeyChangeEventConsumer consumes events that originated in the key server.
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type OutputKeyChangeEventConsumer struct {
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keyChangeConsumer *internal.ContinualConsumer
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db storage.Database
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serverName gomatrixserverlib.ServerName // our server name
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currentStateAPI currentstateAPI.CurrentStateInternalAPI
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// keyAPI api.KeyInternalAPI
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}
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// NewOutputKeyChangeEventConsumer creates a new OutputKeyChangeEventConsumer.
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// Call Start() to begin consuming from the key server.
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func NewOutputKeyChangeEventConsumer(
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cfg *config.Dendrite,
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kafkaConsumer sarama.Consumer,
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currentStateAPI currentstateAPI.CurrentStateInternalAPI,
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store storage.Database,
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) *OutputKeyChangeEventConsumer {
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consumer := internal.ContinualConsumer{
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Topic: string(cfg.Kafka.Topics.OutputKeyChangeEvent),
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Consumer: kafkaConsumer,
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PartitionStore: store,
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}
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s := &OutputKeyChangeEventConsumer{
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keyChangeConsumer: &consumer,
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db: store,
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serverName: cfg.Matrix.ServerName,
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currentStateAPI: currentStateAPI,
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}
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consumer.ProcessMessage = s.onMessage
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return s
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}
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// Start consuming from the key server
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func (s *OutputKeyChangeEventConsumer) Start() error {
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return s.keyChangeConsumer.Start()
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}
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func (s *OutputKeyChangeEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
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var output api.DeviceKeys
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if err := json.Unmarshal(msg.Value, &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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log.WithError(err).Error("syncapi: failed to unmarshal key change event from key server")
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return err
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}
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// work out who we need to notify about the new key
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var queryRes currentstateAPI.QuerySharedUsersResponse
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err := s.currentStateAPI.QuerySharedUsers(context.Background(), ¤tstateAPI.QuerySharedUsersRequest{}, &queryRes)
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if err != nil {
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log.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
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return err
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}
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// TODO: notify users by waking up streams
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return nil
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}
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// Catchup returns a list of user IDs of users who have changed their device keys between the partition|offset given and now.
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// Returns the new offset for this partition.
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func (s *OutputKeyChangeEventConsumer) Catchup(parition int32, offset int64) (userIDs []string, newOffset int, err error) {
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//return s.keyAPI.QueryKeyChangeCatchup(ctx, partition, offset)
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return
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}
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