Build all package refs.

debian/package.go

@@ -345,3 +345,8 @@ func (collection *PackageCollection) ByKey(key []byte) (*Package, error) {
 func (collection *PackageCollection) Update(p *Package) error {
 	return collection.db.Put(p.Key(), p.Encode())
 }
+
+// AllPackageRefs returns list of all packages as PackageRefList
+func (collection *PackageCollection) AllPackageRefs() *PackageRefList {
+	return &PackageRefList{Refs: collection.db.KeysByPrefix([]byte("P"))}
+}

debian/package_test.go

@@ -238,3 +238,12 @@ func (s *PackageCollectionSuite) TestUpdateByKey(c *C) {
 	c.Assert(err, IsNil)
 	c.Assert(p2.Equals(s.p), Equals, true)
 }
+
+func (s *PackageCollectionSuite) TestAllPackageRefs(c *C) {
+	err := s.collection.Update(s.p)
+	c.Assert(err, IsNil)
+
+	refs := s.collection.AllPackageRefs()
+	c.Check(refs.Len(), Equals, 1)
+	c.Check(refs.Refs[0], DeepEquals, s.p.Key())
+}