221 lines
7.9 KiB
Go
221 lines
7.9 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package nodegroupset
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
|
|
testprovider "k8s.io/autoscaler/cluster-autoscaler/cloudprovider/test"
|
|
"k8s.io/autoscaler/cluster-autoscaler/context"
|
|
. "k8s.io/autoscaler/cluster-autoscaler/utils/test"
|
|
schedulercache "k8s.io/kubernetes/pkg/scheduler/cache"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func basicSimilarNodeGroupsTest(t *testing.T, processor NodeGroupSetProcessor) {
|
|
context := &context.AutoscalingContext{}
|
|
|
|
n1 := BuildTestNode("n1", 1000, 1000)
|
|
n2 := BuildTestNode("n2", 1000, 1000)
|
|
n3 := BuildTestNode("n3", 2000, 2000)
|
|
provider := testprovider.NewTestCloudProvider(nil, nil)
|
|
provider.AddNodeGroup("ng1", 1, 10, 1)
|
|
provider.AddNodeGroup("ng2", 1, 10, 1)
|
|
provider.AddNodeGroup("ng3", 1, 10, 1)
|
|
provider.AddNode("ng1", n1)
|
|
provider.AddNode("ng2", n2)
|
|
provider.AddNode("ng3", n3)
|
|
|
|
ni1 := schedulercache.NewNodeInfo()
|
|
ni1.SetNode(n1)
|
|
ni2 := schedulercache.NewNodeInfo()
|
|
ni2.SetNode(n2)
|
|
ni3 := schedulercache.NewNodeInfo()
|
|
ni3.SetNode(n3)
|
|
|
|
nodeInfosForGroups := map[string]*schedulercache.NodeInfo{
|
|
"ng1": ni1, "ng2": ni2, "ng3": ni3,
|
|
}
|
|
|
|
ng1, _ := provider.NodeGroupForNode(n1)
|
|
ng2, _ := provider.NodeGroupForNode(n2)
|
|
ng3, _ := provider.NodeGroupForNode(n3)
|
|
context.CloudProvider = provider
|
|
|
|
similar, err := processor.FindSimilarNodeGroups(context, ng1, nodeInfosForGroups)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, similar, []cloudprovider.NodeGroup{ng2})
|
|
|
|
similar, err = processor.FindSimilarNodeGroups(context, ng2, nodeInfosForGroups)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, similar, []cloudprovider.NodeGroup{ng1})
|
|
|
|
similar, err = processor.FindSimilarNodeGroups(context, ng3, nodeInfosForGroups)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, similar, []cloudprovider.NodeGroup{})
|
|
}
|
|
|
|
func TestFindSimilarNodeGroups(t *testing.T) {
|
|
processor := &BalancingNodeGroupSetProcessor{}
|
|
basicSimilarNodeGroupsTest(t, processor)
|
|
}
|
|
|
|
func TestBalanceSingleGroup(t *testing.T) {
|
|
processor := &BalancingNodeGroupSetProcessor{}
|
|
context := &context.AutoscalingContext{}
|
|
|
|
provider := testprovider.NewTestCloudProvider(nil, nil)
|
|
provider.AddNodeGroup("ng1", 1, 10, 1)
|
|
|
|
// just one node
|
|
scaleUpInfo, err := processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 1)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 1, len(scaleUpInfo))
|
|
assert.Equal(t, 2, scaleUpInfo[0].NewSize)
|
|
|
|
// multiple nodes
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 4)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 1, len(scaleUpInfo))
|
|
assert.Equal(t, 5, scaleUpInfo[0].NewSize)
|
|
}
|
|
|
|
func TestBalanceUnderMaxSize(t *testing.T) {
|
|
processor := &BalancingNodeGroupSetProcessor{}
|
|
context := &context.AutoscalingContext{}
|
|
|
|
provider := testprovider.NewTestCloudProvider(nil, nil)
|
|
provider.AddNodeGroup("ng1", 1, 10, 1)
|
|
provider.AddNodeGroup("ng2", 1, 10, 3)
|
|
provider.AddNodeGroup("ng3", 1, 10, 5)
|
|
provider.AddNodeGroup("ng4", 1, 10, 5)
|
|
|
|
// add a single node
|
|
scaleUpInfo, err := processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 1)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 1, len(scaleUpInfo))
|
|
assert.Equal(t, 2, scaleUpInfo[0].NewSize)
|
|
|
|
// add multiple nodes to single group
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 2)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 1, len(scaleUpInfo))
|
|
assert.Equal(t, 3, scaleUpInfo[0].NewSize)
|
|
|
|
// add nodes to groups of different sizes, divisible
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 4)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 2, len(scaleUpInfo))
|
|
assert.Equal(t, 4, scaleUpInfo[0].NewSize)
|
|
assert.Equal(t, 4, scaleUpInfo[1].NewSize)
|
|
assert.True(t, scaleUpInfo[0].Group.Id() == "ng1" || scaleUpInfo[1].Group.Id() == "ng1")
|
|
assert.True(t, scaleUpInfo[0].Group.Id() == "ng2" || scaleUpInfo[1].Group.Id() == "ng2")
|
|
|
|
// add nodes to groups of different sizes, non-divisible
|
|
// we expect new sizes to be 4 and 5, doesn't matter which group gets how many
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 5)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 2, len(scaleUpInfo))
|
|
assert.Equal(t, 9, scaleUpInfo[0].NewSize+scaleUpInfo[1].NewSize)
|
|
assert.True(t, scaleUpInfo[0].NewSize == 4 || scaleUpInfo[0].NewSize == 5)
|
|
assert.True(t, scaleUpInfo[0].Group.Id() == "ng1" || scaleUpInfo[1].Group.Id() == "ng1")
|
|
assert.True(t, scaleUpInfo[0].Group.Id() == "ng2" || scaleUpInfo[1].Group.Id() == "ng2")
|
|
|
|
// add nodes to all groups, divisible
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, provider.NodeGroups(), 10)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 4, len(scaleUpInfo))
|
|
for _, info := range scaleUpInfo {
|
|
assert.Equal(t, 6, info.NewSize)
|
|
}
|
|
}
|
|
|
|
func TestBalanceHittingMaxSize(t *testing.T) {
|
|
processor := &BalancingNodeGroupSetProcessor{}
|
|
context := &context.AutoscalingContext{}
|
|
|
|
provider := testprovider.NewTestCloudProvider(nil, nil)
|
|
provider.AddNodeGroup("ng1", 1, 1, 1)
|
|
provider.AddNodeGroup("ng2", 1, 3, 1)
|
|
provider.AddNodeGroup("ng3", 1, 10, 3)
|
|
provider.AddNodeGroup("ng4", 1, 7, 5)
|
|
groupsMap := make(map[string]cloudprovider.NodeGroup)
|
|
for _, group := range provider.NodeGroups() {
|
|
groupsMap[group.Id()] = group
|
|
}
|
|
|
|
getGroups := func(names ...string) []cloudprovider.NodeGroup {
|
|
result := make([]cloudprovider.NodeGroup, 0)
|
|
for _, n := range names {
|
|
result = append(result, groupsMap[n])
|
|
}
|
|
return result
|
|
}
|
|
|
|
toMap := func(suiList []ScaleUpInfo) map[string]ScaleUpInfo {
|
|
result := make(map[string]ScaleUpInfo, 0)
|
|
for _, sui := range suiList {
|
|
result[sui.Group.Id()] = sui
|
|
}
|
|
return result
|
|
}
|
|
|
|
// Just one maxed out group
|
|
scaleUpInfo, err := processor.BalanceScaleUpBetweenGroups(context, getGroups("ng1"), 1)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 0, len(scaleUpInfo))
|
|
|
|
// Smallest group already maxed out, add one node
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, getGroups("ng1", "ng2"), 1)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 1, len(scaleUpInfo))
|
|
assert.Equal(t, "ng2", scaleUpInfo[0].Group.Id())
|
|
assert.Equal(t, 2, scaleUpInfo[0].NewSize)
|
|
|
|
// Smallest group already maxed out, too many nodes (should cap to max capacity)
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, getGroups("ng1", "ng2"), 5)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 1, len(scaleUpInfo))
|
|
assert.Equal(t, "ng2", scaleUpInfo[0].Group.Id())
|
|
assert.Equal(t, 3, scaleUpInfo[0].NewSize)
|
|
|
|
// First group maxes out before proceeding to next one
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, getGroups("ng2", "ng3"), 4)
|
|
assert.Equal(t, 2, len(scaleUpInfo))
|
|
scaleUpMap := toMap(scaleUpInfo)
|
|
assert.Equal(t, 3, scaleUpMap["ng2"].NewSize)
|
|
assert.Equal(t, 5, scaleUpMap["ng3"].NewSize)
|
|
|
|
// Last group maxes out before previous one
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, getGroups("ng2", "ng3", "ng4"), 9)
|
|
assert.Equal(t, 3, len(scaleUpInfo))
|
|
scaleUpMap = toMap(scaleUpInfo)
|
|
assert.Equal(t, 3, scaleUpMap["ng2"].NewSize)
|
|
assert.Equal(t, 8, scaleUpMap["ng3"].NewSize)
|
|
assert.Equal(t, 7, scaleUpMap["ng4"].NewSize)
|
|
|
|
// Use all capacity, cap to max
|
|
scaleUpInfo, err = processor.BalanceScaleUpBetweenGroups(context, getGroups("ng2", "ng3", "ng4"), 900)
|
|
assert.Equal(t, 3, len(scaleUpInfo))
|
|
scaleUpMap = toMap(scaleUpInfo)
|
|
assert.Equal(t, 3, scaleUpMap["ng2"].NewSize)
|
|
assert.Equal(t, 10, scaleUpMap["ng3"].NewSize)
|
|
assert.Equal(t, 7, scaleUpMap["ng4"].NewSize)
|
|
}
|