Call monitor via callback in server

main.go

@@ -7,6 +7,7 @@ import (
 	"local3/rssmon2/rss"
 	"local3/rssmon2/server"
 	"local3/rssmon2/store"
+	"time"
 )
 
 const nsForFeeds = "FEEDS"
@@ -30,28 +31,34 @@ func main() {
 		if !ok {
 			feed, items, err = rss.New(url, "Blue", "<img.*?/(img)?>")
 			if err != nil {
+				logger.Log("can't create new RSS %q: %v", url, err)
 				return
 			}
 		} else {
 			items, err = allFeeds[url].Update()
 			if err != nil {
+				logger.Log("can't update old RSS %q: %v", url, err)
 				return
 			}
 		}
 		b, err := feed.Serialize()
 		if err != nil {
+			logger.Log("can't serialize to save RSS %q: %v", url, err)
 			return
 		}
 		if err := sclient.Set(nsForFeeds, feed.ID(), b); err != nil {
+			logger.Log("can't save RSS %q.%q: %v", nsForFeeds, feed.ID(), err)
 			return
 		}
 		logger.Log("Saved feed", feed)
 		for i := range items {
 			b, err := items[i].Serialize()
 			if err != nil {
+				logger.Log("can't save rss item %q.%q: %v", url, items[i].Link, err)
 				return
 			}
 			if err := sclient.Set(feed.ID(), items[i].ID(), b); err != nil {
+				logger.Log("can't save rss item %q.%q: %v", feed.ID(), items[i].ID(), err)
 				return
 			}
 			logger.Log("Saved feed item", feed.ID(), items[i].ID(), items[i])
@@ -77,7 +84,11 @@ func main() {
 		}()
 	*/
 
-	server, err := server.New(config.Port)
+	server, err := server.New(config.Port, func(url string, interval time.Duration) {
+		if err := mon.Submit(url, interval); err != nil {
+			logger.Log("Cannot accept new feed %q: %v", url, err)
+		}
+	})
 	if err != nil {
 		panic(err)
 	}

monitor/monitor.go

@@ -23,6 +23,18 @@ func New(port string, trigger func(string)) (*Monitor, error) {
 	}, nil
 }
 
+func (monitor *Monitor) Submit(url string, interval time.Duration) error {
+	select {
+	case monitor.newItems <- Item{
+		URL:      url,
+		Interval: Duration{interval},
+	}:
+	case <-time.After(time.Second * 5):
+		return errors.New("timeout submitting new item")
+	}
+	return nil
+}
+
 func (monitor *Monitor) Start() error {
 	errs := make(chan error)
 	go func() {

monitor/monitor_test.go

@@ -17,19 +17,14 @@ func Test_Monitor(t *testing.T) {
 	if err != nil {
 		t.Fatalf("cannot create new monitor: %v", err)
 	}
-	itemsNew := make(chan Item, 1)
-	m.newItems = itemsNew
 
 	if err := m.Start(); err != nil {
 		t.Fatalf("cannot start monitor: %v", err)
 	}
 
 	for i := 0; i < numItems; i++ {
-		item := NewItem("item"+strconv.Itoa(i), time.Second+time.Second*time.Duration(i)*1)
+		if err := m.Submit("item"+strconv.Itoa(i), time.Second+time.Second*time.Duration(i)); err != nil {
-		select {
+			t.Errorf("failed to submit item %d: %v", i, err)
-		case itemsNew <- *item:
-		case <-time.After(time.Second * 5):
-			t.Fatalf("could not add new item in time limit")
 		}
 	}
 

server/server.go

@@ -7,15 +7,18 @@ import (
 	"path"
 	"strings"
 	"syscall"
+	"time"
 )
 
 type Server struct {
 	addr           string
+	newItemHandler func(string, time.Duration)
 }
 
-func New(addr string) (*Server, error) {
+func New(addr string, newItemHandler func(string, time.Duration)) (*Server, error) {
 	return &Server{
 		addr:           addr,
+		newItemHandler: newItemHandler,
 	}, nil
 }