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Read roomserver output log and remember position across restarts (#52)
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7ab0436689
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@ -25,4 +25,6 @@ type Sync struct {
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RoomserverOutputTopic string
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// A list of URIs to consume events from. These kafka logs should be produced by a Room Server.
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KafkaConsumerURIs []string
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// The postgres connection config for connecting to the database e.g a postgres:// URI
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DataSource string
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}
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@ -48,8 +48,8 @@ func Setup(servMux *http.ServeMux, httpClient *http.Client, cfg config.ClientAPI
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servMux.Handle("/api/", http.StripPrefix("/api", apiMux))
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}
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// SetupSyncServer configures the given mux with sync-server listeners
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func SetupSyncServer(servMux *http.ServeMux, httpClient *http.Client, cfg config.Sync) {
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// SetupSyncServerListeners configures the given mux with sync-server listeners
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func SetupSyncServerListeners(servMux *http.ServeMux, httpClient *http.Client, cfg config.Sync) {
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apiMux := mux.NewRouter()
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r0mux := apiMux.PathPrefix(pathPrefixR0).Subrouter()
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r0mux.Handle("/sync", make("sync", util.NewJSONRequestHandler(func(req *http.Request) util.JSONResponse {
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@ -0,0 +1,39 @@
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package storage
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import (
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"database/sql"
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"github.com/matrix-org/dendrite/common"
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// Import the postgres database driver.
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_ "github.com/lib/pq"
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)
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// SyncServerDatabase represents a sync server database
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type SyncServerDatabase struct {
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db *sql.DB
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partitions common.PartitionOffsetStatements
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}
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// NewSyncServerDatabase creates a new sync server database
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func NewSyncServerDatabase(dataSourceName string) (*SyncServerDatabase, error) {
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var db *sql.DB
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var err error
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if db, err = sql.Open("postgres", dataSourceName); err != nil {
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return nil, err
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}
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partitions := common.PartitionOffsetStatements{}
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if err = partitions.Prepare(db); err != nil {
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return nil, err
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}
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return &SyncServerDatabase{db, partitions}, nil
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}
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// PartitionOffsets implements common.PartitionStorer
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func (d *SyncServerDatabase) PartitionOffsets(topic string) ([]common.PartitionOffset, error) {
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return d.partitions.SelectPartitionOffsets(topic)
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}
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// SetPartitionOffset implements common.PartitionStorer
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func (d *SyncServerDatabase) SetPartitionOffset(topic string, partition int32, offset int64) error {
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return d.partitions.UpsertPartitionOffset(topic, partition, offset)
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}
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@ -0,0 +1,43 @@
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package sync
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import (
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log "github.com/Sirupsen/logrus"
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"github.com/matrix-org/dendrite/clientapi/config"
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"github.com/matrix-org/dendrite/common"
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sarama "gopkg.in/Shopify/sarama.v1"
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)
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// Server contains all the logic for running a sync server
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type Server struct {
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roomServerConsumer *common.ContinualConsumer
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}
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// NewServer creates a new sync server. Call Start() to begin consuming from room servers.
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func NewServer(cfg *config.Sync, store common.PartitionStorer) (*Server, error) {
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kafkaConsumer, err := sarama.NewConsumer(cfg.KafkaConsumerURIs, nil)
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if err != nil {
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return nil, err
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}
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consumer := common.ContinualConsumer{
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Topic: cfg.RoomserverOutputTopic,
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Consumer: kafkaConsumer,
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PartitionStore: store,
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}
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s := &Server{
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roomServerConsumer: &consumer,
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}
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consumer.ProcessMessage = s.onMessage
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return s, nil
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}
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// Start consuming from room servers
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func (s *Server) Start() error {
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return s.roomServerConsumer.Start()
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}
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func (s *Server) onMessage(msg *sarama.ConsumerMessage) error {
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log.WithField("key", string(msg.Key)).WithField("val", string(msg.Value)).Info("Recv")
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return nil
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}
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@ -7,6 +7,8 @@ import (
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"github.com/matrix-org/dendrite/clientapi/config"
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"github.com/matrix-org/dendrite/clientapi/routing"
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"github.com/matrix-org/dendrite/clientapi/storage"
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"github.com/matrix-org/dendrite/clientapi/sync"
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log "github.com/Sirupsen/logrus"
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"github.com/matrix-org/dugong"
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@ -40,10 +42,24 @@ func main() {
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cfg := config.Sync{
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KafkaConsumerURIs: []string{"localhost:9092"},
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RoomserverOutputTopic: "roomserverOutput",
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DataSource: "postgres://dendrite:itsasecret@localhost/syncserver?sslmode=disable",
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}
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log.Info("Starting sync server")
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routing.SetupSyncServer(http.DefaultServeMux, http.DefaultClient, cfg)
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db, err := storage.NewSyncServerDatabase(cfg.DataSource)
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if err != nil {
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log.Panicf("startup: failed to create sync server database with data source %s : %s", cfg.DataSource, err)
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}
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server, err := sync.NewServer(&cfg, db)
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if err != nil {
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log.Panicf("startup: failed to create sync server: %s", err)
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}
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if err = server.Start(); err != nil {
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log.Panicf("startup: failed to start sync server")
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}
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routing.SetupSyncServerListeners(http.DefaultServeMux, http.DefaultClient, cfg)
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log.Fatal(http.ListenAndServe(bindAddr, nil))
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}
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@ -57,6 +57,7 @@ func (s *PartitionOffsetStatements) SelectPartitionOffsets(topic string) ([]Part
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if err := rows.Scan(&offset.Partition, &offset.Offset); err != nil {
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return nil, err
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}
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results = append(results, offset)
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}
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return results, nil
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}
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