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Merge pull request #960 from ahmetalpbalkan/random 

scheduler/random: Use private instance of rand
This commit is contained in:
Victor Vieux 2015-06-15 18:13:20 -07:00
parent b8ba1ff52a 6064e889b7
commit 077489a948
1 changed files with 5 additions and 3 deletions
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8
scheduler/strategy/random.go
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@ -10,11 +10,13 @@ import (
) )
// RandomPlacementStrategy randomly places the container into the cluster. // RandomPlacementStrategy randomly places the container into the cluster.
type RandomPlacementStrategy struct{} type RandomPlacementStrategy struct {
r *rand.Rand
}
// Initialize is exported // Initialize is exported
func (p *RandomPlacementStrategy) Initialize() error { func (p *RandomPlacementStrategy) Initialize() error {
rand.Seed(time.Now().UTC().UnixNano()) p.r = rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
return nil return nil
} }
@ -26,7 +28,7 @@ func (p *RandomPlacementStrategy) Name() string {
// PlaceContainer is exported // PlaceContainer is exported
func (p *RandomPlacementStrategy) PlaceContainer(config *cluster.ContainerConfig, nodes []*node.Node) (*node.Node, error) { func (p *RandomPlacementStrategy) PlaceContainer(config *cluster.ContainerConfig, nodes []*node.Node) (*node.Node, error) {
if size := len(nodes); size > 0 { if size := len(nodes); size > 0 {
return nodes[rand.Intn(size)], nil return nodes[p.r.Intn(size)], nil
} }
return nil, errors.New("No nodes running in the cluster") return nil, errors.New("No nodes running in the cluster")