Method Connect

pkg/controller/graph/dag.go:116–128

Connect vertex 'from' to 'to' by a new edge if not exist

(from, to Vertex)

// Connect vertex 'from' to 'to' by a new edge if not exist
func (d *DAG) Connect(from, to Vertex) bool {
	if from == nil || to == nil {
		return false
	}
	for k := range d.edges {
		if k.From() == from && k.To() == to {
			return true
		}
	}
	edge := RealEdge(from, to)
	d.edges[edge] = edge
	return true
}

// AddConnect add 'to' to the DAG 'd' and connect 'from' to 'to'
func (d *DAG) AddConnect(from, to Vertex) bool {