forked from docker-archive/classicswarm
/
binpack.go
45 lines (36 loc) · 954 Bytes
/
binpack.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
package strategy
import (
"sort"
"github.com/docker/swarm/cluster"
"github.com/docker/swarm/scheduler/node"
)
// BinpackPlacementStrategy is exported
type BinpackPlacementStrategy struct {
}
// Initialize is exported
func (p *BinpackPlacementStrategy) Initialize() error {
return nil
}
// Name returns the name of the strategy
func (p *BinpackPlacementStrategy) Name() string {
return "binpack"
}
// PlaceContainer is exported
func (p *BinpackPlacementStrategy) PlaceContainer(config *cluster.ContainerConfig, nodes []*node.Node) (*node.Node, error) {
weightedNodes, err := weighNodes(config, nodes)
if err != nil {
return nil, err
}
// sort by highest weight
sort.Sort(sort.Reverse(weightedNodes))
topNode := weightedNodes[0]
for _, node := range weightedNodes {
if node.Weight != topNode.Weight {
break
}
if len(node.Node.Containers) > len(topNode.Node.Containers) {
topNode = node
}
}
return topNode.Node, nil
}