First working feed reader version

src/github.com/matrix-org/go-neb/goneb.go

@@ -72,6 +72,7 @@ func main() {
 	rh := &realmRedirectHandler{db: db}
 	http.HandleFunc("/realms/redirects/", rh.handle)
 
+	polling.SetClients(clients)
 	if err := polling.Start(); err != nil {
 		log.WithError(err).Panic("Failed to start polling")
 	}

src/github.com/matrix-org/go-neb/polling/polling.go

@@ -3,6 +3,7 @@ package polling
 import (
 	"fmt"
 	log "github.com/Sirupsen/logrus"
+	"github.com/matrix-org/go-neb/clients"
 	"github.com/matrix-org/go-neb/database"
 	"github.com/matrix-org/go-neb/types"
 	"sync"
@@ -16,6 +17,11 @@ var (
 	pollMutex     sync.Mutex
 	startPollTime = make(map[string]int64) // ServiceID => unix timestamp
 )
+var clientPool *clients.Clients
+
+func SetClients(clis *clients.Clients) {
+	clientPool = clis
+}
 
 // Start polling already existing services
 func Start() error {
@@ -74,8 +80,13 @@ func pollLoop(service types.Service, poller types.Poller, ts int64) {
 		"interval_secs": poller.IntervalSecs(),
 	})
 	logger.Info("Starting polling loop")
+	cli, err := clientPool.Client(service.ServiceUserID())
+	if err != nil {
+		logger.WithError(err).WithField("user_id", service.ServiceUserID()).Error("Poll setup failed: failed to load client")
+		return
+	}
 	for {
-		poller.OnPoll(service)
+		poller.OnPoll(service, cli)
 		if pollTimeChanged(service, ts) {
 			logger.Info("Terminating poll.")
 			break

src/github.com/matrix-org/go-neb/services/feedreader/feedreader.go

@@ -2,12 +2,14 @@ package services
 
 import (
 	"errors"
+	"fmt"
 	log "github.com/Sirupsen/logrus"
 	"github.com/matrix-org/go-neb/database"
 	"github.com/matrix-org/go-neb/matrix"
 	"github.com/matrix-org/go-neb/polling"
 	"github.com/matrix-org/go-neb/types"
 	"github.com/mmcdole/gofeed"
+	"html"
 	"time"
 )
 
@@ -16,7 +18,7 @@ const minPollingIntervalSeconds = (10 * 60) // 10min
 type feedPoller struct{}
 
 func (p *feedPoller) IntervalSecs() int64 { return 10 }
-func (p *feedPoller) OnPoll(s types.Service) {
+func (p *feedPoller) OnPoll(s types.Service, cli *matrix.Client) {
 	logger := log.WithFields(log.Fields{
 		"service_id":   s.ServiceID(),
 		"service_type": s.ServiceType(),
@@ -40,13 +42,13 @@ func (p *feedPoller) OnPoll(s types.Service) {
 
 	// Query each feed and send new items to subscribed rooms
 	for _, u := range pollFeeds {
-		items, err := p.queryFeed(frService, u)
+		feed, items, err := p.queryFeed(frService, u)
 		if err != nil {
 			logger.WithField("feed_url", u).WithError(err).Error("Failed to query feed")
 			continue
 		}
 		for _, i := range items {
-			if err := p.sendToRooms(frService, u, i); err != nil {
+			if err := p.sendToRooms(frService, cli, u, feed, i); err != nil {
 				logger.WithFields(log.Fields{
 					"feed_url":   u,
 					log.ErrorKey: err,
@@ -66,18 +68,18 @@ func (p *feedPoller) OnPoll(s types.Service) {
 }
 
 // Query the given feed, update relevant timestamps and return NEW items
-func (p *feedPoller) queryFeed(s *feedReaderService, feedURL string) ([]gofeed.Item, error) {
+func (p *feedPoller) queryFeed(s *feedReaderService, feedURL string) (*gofeed.Feed, []gofeed.Item, error) {
 	var items []gofeed.Item
 	fp := gofeed.NewParser()
 	feed, err := fp.ParseURL(feedURL)
 	if err != nil {
-		return items, err
+		return nil, items, err
 	}
 
 	// Work out which items are new, if any (based on the last updated TS we have)
 	// If the TS is 0 then this is the first ever poll, so let's not send 10s of events
 	// into the room and just do new ones from this point onwards.
-	// if s.Feeds[feedURL].FeedUpdatedTimestampSecs != 0 {
+	if s.Feeds[feedURL].FeedUpdatedTimestampSecs != 0 {
 		for _, i := range feed.Items {
 			if i == nil || i.PublishedParsed == nil {
 				continue
@@ -86,9 +88,6 @@ func (p *feedPoller) queryFeed(s *feedReaderService, feedURL string) ([]gofeed.I
 				items = append(items, *i)
 			}
 		}
-	// }
-	if s.Feeds[feedURL].FeedUpdatedTimestampSecs == 0 {
-		log.Debug("ts is 0")
 	}
 
 	now := time.Now().Unix() // Second resolution
@@ -113,7 +112,7 @@ func (p *feedPoller) queryFeed(s *feedReaderService, feedURL string) ([]gofeed.I
 	// See http://www.feedforall.com/syndication.htm and http://web.resource.org/rss/1.0/modules/syndication/
 
 	p.updateFeedInfo(s, feedURL, nextPollTsSec, feedLastUpdatedTs)
-	return items, nil
+	return feed, items, nil
 }
 
 func (p *feedPoller) updateFeedInfo(s *feedReaderService, feedURL string, nextPollTs, feedUpdatedTs int64) {
@@ -128,8 +127,9 @@ func (p *feedPoller) updateFeedInfo(s *feedReaderService, feedURL string, nextPo
 	}
 }
 
-func (p *feedPoller) sendToRooms(s *feedReaderService, feedURL string, item gofeed.Item) error {
-	log.WithField("feed_url", feedURL).WithField("title", item.Title).Info("New feed item")
+func (p *feedPoller) sendToRooms(s *feedReaderService, cli *matrix.Client, feedURL string, feed *gofeed.Feed, item gofeed.Item) error {
+	logger := log.WithField("feed_url", feedURL).WithField("title", item.Title)
+	logger.Info("New feed item")
 	var rooms []string
 	for roomID, urls := range s.Rooms {
 		for _, u := range urls {
@@ -139,9 +139,22 @@ func (p *feedPoller) sendToRooms(s *feedReaderService, feedURL string, item gofe
 			}
 		}
 	}
+	for _, roomID := range rooms {
+		if _, err := cli.SendMessageEvent(roomID, "m.room.message", itemToHTML(feed, item)); err != nil {
+			logger.WithError(err).WithField("room_id", roomID).Error("Failed to send to room")
+		}
+	}
 	return nil
 }
 
+// SomeOne posted a new article: Title Of The Entry ( https://someurl.com/blag )
+func itemToHTML(feed *gofeed.Feed, item gofeed.Item) matrix.HTMLMessage {
+	return matrix.GetHTMLMessage("m.notice", fmt.Sprintf(
+		"<i>%s</i> posted a new article: %s ( %s )",
+		html.EscapeString(feed.Title), html.EscapeString(item.Title), html.EscapeString(item.Link),
+	))
+}
+
 type feedReaderService struct {
 	types.DefaultService
 	id            string

src/github.com/matrix-org/go-neb/types/types.go

@@ -43,7 +43,7 @@ type BotOptions struct {
 // Poller represents a thing that can be polled at a given rate.
 type Poller interface {
 	IntervalSecs() int64
-	OnPoll(service Service)
+	OnPoll(service Service, client *matrix.Client)
 }
 
 // A Service is the configuration for a bot service.