first commit.

way too late.

nsqsubscriber/nsqsubscriber.go

@@ -0,0 +1,40 @@
+package nsqsubscriber
+
+import (
+	"encoding/json"
+
+	"code.google.com/p/go-uuid/uuid"
+	"github.com/bitly/go-nsq"
+	"github.com/didiercrunch/doorman/shared"
+	"gopkg.in/mgo.v2/bson"
+)
+
+var UUID = uuid.New()
+
+type NSQSubscriber struct {
+	NSQLookupURL string
+}
+
+func toNSQHandlerFunc(update shared.UpdateHandlerFunc) nsq.HandlerFunc {
+	return func(message *nsq.Message) error {
+		wu := &shared.DoormanUpdater{}
+		if err := json.Unmarshal(message.Body, wu); err != nil {
+			return err
+		}
+		wu.Timestamp = message.Timestamp
+		return update(wu)
+	}
+}
+
+func (sub *NSQSubscriber) Subscribe(doormanId bson.ObjectId, update shared.UpdateHandlerFunc) error {
+	config := nsq.NewConfig()
+	q, err := nsq.NewConsumer(doormanId.Hex(), UUID, config)
+	if err != nil {
+		return err
+	}
+	q.AddHandler(nsq.HandlerFunc(toNSQHandlerFunc(update)))
+	if err := q.ConnectToNSQLookupd(sub.NSQLookupURL); err != nil {
+		return err
+	}
+	return nil
+}