monitor writes to db

Former-commit-id: 5aa70ad9d835c607abb1c19dc620f6c45d31a866

monitor/queue.go

@@ -1,19 +1,55 @@
 package monitor
 
-import "github.com/golang-collections/go-datastructures/queue"
+import (
+	"local/rssmon3/config"
+	"log"
+
+	"github.com/golang-collections/go-datastructures/queue"
+)
+
+const nsQueued = "nsQueued"
 
 type Queue struct {
 	queue *queue.PriorityQueue
 }
 
-func newQueue() *Queue {
-	return &Queue{
-		queue: queue.NewPriorityQueue(1),
+func newQueue() (*Queue, error) {
+	q := queue.NewPriorityQueue(1)
+	db := config.Values().DB
+	keys, err := db.List([]string{nsQueued})
+	if err != nil {
+		return nil, err
 	}
+	for _, key := range keys {
+		b, err := db.Get(key, nsQueued)
+		if err != nil {
+			return nil, err
+		}
+		i := &Item{}
+		if err := i.Decode(b); err != nil {
+			return nil, err
+		}
+		q.Put(i)
+	}
+	return &Queue{
+		queue: q,
+	}, nil
 }
 
 func (q *Queue) Push(i *Item) {
+	if i == nil {
+		return
+	}
 	q.queue.Put(i)
+	b, err := i.Encode()
+	if err != nil {
+		log.Println(err)
+		return
+	}
+	if err := config.Values().DB.Set(i.Key, b, nsQueued); err != nil {
+		log.Println(err)
+		return
+	}
 }
 
 func (q *Queue) Pop() *Item {