132 lines
3.4 KiB
Go
132 lines
3.4 KiB
Go
//go:build linux
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// +build linux
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package fingerprint
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import (
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"fmt"
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"testing"
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"github.com/hashicorp/nomad/client/config"
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"github.com/hashicorp/nomad/helper/testlog"
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"github.com/hashicorp/nomad/nomad/structs"
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)
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// A fake mount point detector that returns an empty path
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type MountPointDetectorNoMountPoint struct{}
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func (m *MountPointDetectorNoMountPoint) MountPoint() (string, error) {
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return "", nil
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}
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// A fake mount point detector that returns an error
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type MountPointDetectorMountPointFail struct{}
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func (m *MountPointDetectorMountPointFail) MountPoint() (string, error) {
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return "", fmt.Errorf("cgroup mountpoint discovery failed")
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}
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// A fake mount point detector that returns a valid path
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type MountPointDetectorValidMountPoint struct{}
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func (m *MountPointDetectorValidMountPoint) MountPoint() (string, error) {
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return "/sys/fs/cgroup", nil
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}
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// A fake mount point detector that returns an empty path
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type MountPointDetectorEmptyMountPoint struct{}
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func (m *MountPointDetectorEmptyMountPoint) MountPoint() (string, error) {
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return "", nil
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}
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func TestCGroupFingerprint(t *testing.T) {
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{
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f := &CGroupFingerprint{
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logger: testlog.HCLogger(t),
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lastState: cgroupUnavailable,
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mountPointDetector: &MountPointDetectorMountPointFail{},
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}
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node := &structs.Node{
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Attributes: make(map[string]string),
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}
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request := &FingerprintRequest{Config: &config.Config{}, Node: node}
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var response FingerprintResponse
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err := f.Fingerprint(request, &response)
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if err == nil {
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t.Fatalf("expected an error")
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}
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if a, _ := response.Attributes["unique.cgroup.mountpoint"]; a != "" {
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t.Fatalf("unexpected attribute found, %s", a)
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}
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}
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{
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f := &CGroupFingerprint{
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logger: testlog.HCLogger(t),
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lastState: cgroupUnavailable,
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mountPointDetector: &MountPointDetectorValidMountPoint{},
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}
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node := &structs.Node{
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Attributes: make(map[string]string),
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}
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request := &FingerprintRequest{Config: &config.Config{}, Node: node}
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var response FingerprintResponse
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err := f.Fingerprint(request, &response)
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if err != nil {
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t.Fatalf("unexpected error, %s", err)
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}
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if a, ok := response.Attributes["unique.cgroup.mountpoint"]; !ok {
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t.Fatalf("unable to find attribute: %s", a)
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}
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}
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{
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f := &CGroupFingerprint{
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logger: testlog.HCLogger(t),
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lastState: cgroupUnavailable,
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mountPointDetector: &MountPointDetectorEmptyMountPoint{},
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}
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node := &structs.Node{
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Attributes: make(map[string]string),
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}
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request := &FingerprintRequest{Config: &config.Config{}, Node: node}
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var response FingerprintResponse
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err := f.Fingerprint(request, &response)
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if err != nil {
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t.Fatalf("unexpected error, %s", err)
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}
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if a, _ := response.Attributes["unique.cgroup.mountpoint"]; a != "" {
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t.Fatalf("unexpected attribute found, %s", a)
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}
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}
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{
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f := &CGroupFingerprint{
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logger: testlog.HCLogger(t),
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lastState: cgroupAvailable,
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mountPointDetector: &MountPointDetectorValidMountPoint{},
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}
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node := &structs.Node{
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Attributes: make(map[string]string),
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}
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request := &FingerprintRequest{Config: &config.Config{}, Node: node}
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var response FingerprintResponse
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err := f.Fingerprint(request, &response)
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if err != nil {
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t.Fatalf("unexpected error, %s", err)
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}
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if a, _ := response.Attributes["unique.cgroup.mountpoint"]; a == "" {
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t.Fatalf("expected attribute to be found, %s", a)
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}
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}
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}
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