Ejemplo n.º 1
0
func (n *LinkedListNode) Join(new chord.Node) error {
	newAsLinked, ok := new.(*LinkedListNode)
	if !ok {
		return fmt.Errorf("Attempted to join with a non linked-list node")
	}

	succ := n.FindSuccessor(new.Identifier())
	asLinked := succ.(*LinkedListNode)
	asLinked.insertBefore(newAsLinked)

	return nil
}
Ejemplo n.º 2
0
func TestRing(t *testing.T) {
	first := node.NewLinkedList(chord.ID(10))
	r := ring.Ring{Known: first}

	for _, id := range []chord.ID{chord.ID(1), chord.ID(10), chord.ID(20)} {
		res, _ := r.Lookup(id)
		assert.Equal(t, first.Identifier(), res.Identifier())
	}

	second := node.LinkedListNode{
		ID: chord.ID(20),
	}
	assert.Nil(t, r.Join(&second))

	first.Dump()

	var res chord.Node
	res, _ = r.Lookup(chord.ID(1))
	assert.Equal(t, first.Identifier(), res.Identifier())

	res, _ = r.Lookup(chord.ID(12))
	assert.Equal(t, second.Identifier(), res.Identifier())

	res, _ = r.Lookup(chord.ID(21))
	assert.Equal(t, first.Identifier(), res.Identifier())
}
Ejemplo n.º 3
0
func OwnsID(n chord.Node, id chord.ID) bool {
	if n.Successor().Identifier() == n.Identifier() {
		return true
	}

	pre := n.Predecessor()
	if pre.Identifier() > n.Identifier() {
		return id > pre.Identifier() || id <= n.Identifier()
	}

	return id <= n.Identifier() && id > pre.Identifier()
}