dag

package

v1.10.2 Latest Latest Go to latest Published: May 23, 2021 License: Apache-2.0 Imports: 0 Imported by: 0

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type Dag struct {
	// contains filtered or unexported fields
}

Dag is a directed acyclic graph.

func New() *Dag

New creates a new directed acyclic graph (dag) that can determinate if a stage has dependencies.

func (d *Dag) Add(from string, to ...string) *Vertex

Add establishes a dependency between two vertices in the graph.

func (d *Dag) Ancestors(name string) []*Vertex

Ancestors returns the ancestors of the vertex.

func (d *Dag) Dependencies(name string) []string

Dependencies returns the direct dependencies accounting for skipped dependencies.

func (d *Dag) DetectCycles() bool

DetectCycles returns true if cycles are detected in the graph.

func (d *Dag) Get(name string) (*Vertex, bool)

Get returns the vertex from the graph.

type Vertex struct {
	Name string
	Skip bool
	// contains filtered or unexported fields
}

Vertex is a vertex in the graph.