Listing of packages in snapshot.

debian/list.go

@@ -103,3 +103,12 @@ func (l *PackageRefList) Decode(input []byte) error {
 	decoder := codec.NewDecoderBytes(input, &codec.MsgpackHandle{})
 	return decoder.Decode(l)
 }
+
+// ForEach calls handler for each package ref in list
+//
+// TODO: Error handling
+func (l *PackageRefList) ForEach(handler func([]byte)) {
+	for _, p := range l.Refs {
+		handler(p)
+	}
+}

debian/list_test.go

@@ -90,3 +90,19 @@ func (s *PackageListSuite) TestPackageRefListEncodeDecode(c *C) {
 	c.Check(reflist2.Len(), Equals, reflist.Len())
 	c.Check(reflist2.Refs, DeepEquals, reflist.Refs)
 }
+
+func (s *PackageListSuite) TestPackageRefListForeach(c *C) {
+	s.list.Add(s.p1)
+	s.list.Add(s.p3)
+	s.list.Add(s.p5)
+	s.list.Add(s.p6)
+
+	reflist := NewPackageRefListFromPackageList(s.list)
+
+	Len := 0
+	reflist.ForEach(func([]byte) {
+		Len++
+	})
+
+	c.Check(Len, Equals, 4)
+}

debian/snapshot.go

@@ -56,6 +56,11 @@ func (s *Snapshot) NumPackages() int {
 	return s.packageRefs.Len()
 }
 
+// RefList returns list of package refs in snapshot
+func (s *Snapshot) RefList() *PackageRefList {
+	return s.packageRefs
+}
+
 // Key is a unique id in DB
 func (s *Snapshot) Key() []byte {
 	return []byte("S" + s.UUID)

debian/snapshot_test.go

@@ -22,6 +22,7 @@ func (s *SnapshotSuite) TestNewSnapshotFromRepository(c *C) {
 	snapshot, _ := NewSnapshotFromRepository("snap1", s.repo)
 	c.Check(snapshot.Name, Equals, "snap1")
 	c.Check(snapshot.NumPackages(), Equals, 3)
+	c.Check(snapshot.RefList().Len(), Equals, 3)
 
 	s.repo.packageRefs = nil
 	_, err := NewSnapshotFromRepository("snap2", s.repo)