fix(data): create new filter func on the cluster interface

Author: Aaron Schlesinger

data/cluster.go

@@ -11,4 +11,5 @@ type Cluster interface {
 	Get(*sql.DB, string) (types.Cluster, error)
 	Set(*sql.DB, string, types.Cluster) (types.Cluster, error)
 	Checkin(*sql.DB, string, types.Cluster) (sql.Result, error)
+	FilterByAge(*sql.DB, *ClusterAgeFilter) ([]types.Cluster, error)
 }

data/cluster_from_db.go

@@ -82,3 +82,10 @@ func (c ClusterFromDB) Checkin(db *sql.DB, id string, cluster types.Cluster) (sq
 	}
 	return result, nil
 }
+
+// FilterByAge returns a slice of clusters whose various time fields match the requirements
+// in the given filter. Note that the filter's requirements are a conjunction, not a disjunction
+func (c ClusterFromDB) FilterByAge(db *sql.DB, filter *ClusterAgeFilter) ([]types.Cluster, error) {
+	// TODO: impl
+	return nil, nil
+}