kubernetes/pkg/volume/csi/csi_metrics_test.go
2021-02-17 13:38:27 -08:00

158 lines
4.9 KiB
Go

/*
Copyright 2019 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 csi
import (
"io"
"testing"
csipbv1 "github.com/container-storage-interface/spec/lib/go/csi"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/kubernetes/pkg/volume"
"k8s.io/kubernetes/pkg/volume/csi/fake"
)
func TestGetMetrics(t *testing.T) {
tests := []struct {
name string
volumeID string
targetPath string
expectSuccess bool
}{
{
name: "with valid name and volume id",
expectSuccess: true,
volumeID: "foobar",
targetPath: "/mnt/foo",
},
}
for _, tc := range tests {
metricsGetter := &metricsCsi{volumeID: tc.volumeID, targetPath: tc.targetPath}
metricsGetter.csiClient = &csiDriverClient{
driverName: "com.google.gcepd",
nodeV1ClientCreator: func(addr csiAddr, m *MetricsManager) (csipbv1.NodeClient, io.Closer, error) {
nodeClient := fake.NewNodeClientWithVolumeStats(true /* VolumeStatsCapable */)
fakeCloser := fake.NewCloser(t)
nodeClient.SetNodeVolumeStatsResp(getRawVolumeInfo())
return nodeClient, fakeCloser, nil
},
}
metrics, err := metricsGetter.GetMetrics()
if err != nil {
t.Fatalf("for %s: unexpected error : %v", tc.name, err)
}
if metrics == nil {
t.Fatalf("unexpected nil metrics")
}
expectedMetrics := getRawVolumeInfo()
for _, usage := range expectedMetrics.Usage {
if usage.Unit == csipbv1.VolumeUsage_BYTES {
availableBytes := resource.NewQuantity(usage.Available, resource.BinarySI)
totalBytes := resource.NewQuantity(usage.Total, resource.BinarySI)
usedBytes := resource.NewQuantity(usage.Used, resource.BinarySI)
if metrics.Available.Cmp(*availableBytes) != 0 {
t.Fatalf("for %s: error: expected :%v , got: %v", tc.name, *availableBytes, *(metrics.Available))
}
if metrics.Capacity.Cmp(*totalBytes) != 0 {
t.Fatalf("for %s: error: expected :%v , got: %v", tc.name, *totalBytes, *(metrics.Capacity))
}
if metrics.Used.Cmp(*usedBytes) != 0 {
t.Fatalf("for %s: error: expected :%v , got: %v", tc.name, *usedBytes, *(metrics.Used))
}
}
if usage.Unit == csipbv1.VolumeUsage_INODES {
freeInodes := resource.NewQuantity(usage.Available, resource.BinarySI)
inodes := resource.NewQuantity(usage.Total, resource.BinarySI)
usedInodes := resource.NewQuantity(usage.Used, resource.BinarySI)
if metrics.InodesFree.Cmp(*freeInodes) != 0 {
t.Fatalf("for %s: error: expected :%v , got: %v", tc.name, *freeInodes, *(metrics.InodesFree))
}
if metrics.Inodes.Cmp(*inodes) != 0 {
t.Fatalf("for %s: error: expected :%v , got: %v", tc.name, *inodes, *(metrics.Inodes))
}
if metrics.InodesUsed.Cmp(*usedInodes) != 0 {
t.Fatalf("for %s: error: expected :%v , got: %v", tc.name, *usedInodes, *(metrics.InodesUsed))
}
}
}
}
}
// test GetMetrics with a volume that does not support stats
func TestGetMetricsDriverNotSupportStats(t *testing.T) {
tests := []struct {
name string
volumeID string
targetPath string
expectSuccess bool
}{
{
name: "volume created by simple driver",
expectSuccess: true,
volumeID: "foobar",
targetPath: "/mnt/foo",
},
}
for _, tc := range tests {
metricsGetter := &metricsCsi{volumeID: tc.volumeID, targetPath: tc.targetPath}
metricsGetter.csiClient = &csiDriverClient{
driverName: "com.simple.SimpleDriver",
nodeV1ClientCreator: func(addr csiAddr, m *MetricsManager) (csipbv1.NodeClient, io.Closer, error) {
nodeClient := fake.NewNodeClientWithVolumeStats(false /* VolumeStatsCapable */)
fakeCloser := fake.NewCloser(t)
nodeClient.SetNodeVolumeStatsResp(getRawVolumeInfo())
return nodeClient, fakeCloser, nil
},
}
metrics, err := metricsGetter.GetMetrics()
if err == nil {
t.Fatalf("for %s: expected error, but got nil error", tc.name)
}
if !volume.IsNotSupported(err) {
t.Fatalf("for %s, expected not supported error but got: %v", tc.name, err)
}
if metrics != nil {
t.Fatalf("for %s, expected nil metrics, but got: %v", tc.name, metrics)
}
}
}
func getRawVolumeInfo() *csipbv1.NodeGetVolumeStatsResponse {
return &csipbv1.NodeGetVolumeStatsResponse{
Usage: []*csipbv1.VolumeUsage{
{
Available: int64(10),
Total: int64(10),
Used: int64(2),
Unit: csipbv1.VolumeUsage_BYTES,
},
{
Available: int64(100),
Total: int64(100),
Used: int64(20),
Unit: csipbv1.VolumeUsage_INODES,
},
},
}
}