Example #1
0
func validateLabels(a, b string) bool {
	sA, eA := labels.Parse(a)
	if eA != nil {
		return false
	}
	sB, eB := labels.Parse(b)
	if eB != nil {
		return false
	}
	return sA.String() == sB.String()
}
func main() {
	flag.Parse()
	glog.Info("Elasticsearch discovery")
	apiServer := *server
	if apiServer == "" {
		qingyuanService := os.Getenv("QINGYUAN_SERVICE_HOST")
		if qingyuanService == "" {
			glog.Fatalf("Please specify the QingYuan server with --server")
		}
		apiServer = fmt.Sprintf("https://%s:%s", qingyuanService, os.Getenv("QINGYUAN_SERVICE_PORT"))
	}

	glog.Infof("Server: %s", apiServer)
	glog.Infof("Namespace: %q", *namespace)
	glog.Infof("selector: %q", *selector)

	config := client.Config{
		Host:        apiServer,
		BearerToken: *token,
		Insecure:    true,
	}

	c, err := client.New(&config)
	if err != nil {
		glog.Fatalf("Failed to make client: %v", err)
	}

	l, err := labels.Parse(*selector)
	if err != nil {
		glog.Fatalf("Failed to parse selector %q: %v", *selector, err)
	}
	pods, err := c.Pods(*namespace).List(l, fields.Everything())
	if err != nil {
		glog.Fatalf("Failed to list pods: %v", err)
	}

	glog.Infof("Elasticsearch pods in namespace %s with selector %q", *namespace, *selector)
	podIPs := []string{}
	for i := range pods.Items {
		p := &pods.Items[i]
		for attempt := 0; attempt < 10; attempt++ {
			glog.Infof("%d: %s PodIP: %s", i, p.Name, p.Status.PodIP)
			if p.Status.PodIP != "" {
				podIPs = append(podIPs, fmt.Sprintf(`"%s"`, p.Status.PodIP))
				break
			}
			time.Sleep(1 * time.Second)
			p, err = c.Pods(*namespace).Get(p.Name)
			if err != nil {
				glog.Warningf("Failed to get pod %s: %v", p.Name, err)
			}
		}
		if p.Status.PodIP == "" {
			glog.Warningf("Failed to obtain PodIP for %s", p.Name)
		}
	}
	fmt.Printf("discovery.zen.ping.unicast.hosts: [%s]\n", strings.Join(podIPs, ", "))
}
Example #3
0
func init() {
	Scheme.AddDefaultingFuncs(
		func(obj *ListOptions) {
			obj.LabelSelector = labels.Everything()
			obj.FieldSelector = fields.Everything()
		},
		func(obj *PodExecOptions) {
			obj.Stderr = true
			obj.Stdout = true
		},
	)
	Scheme.AddConversionFuncs(
		func(in *util.Time, out *util.Time, s conversion.Scope) error {
			// Cannot deep copy these, because time.Time has unexported fields.
			*out = *in
			return nil
		},
		func(in *string, out *labels.Selector, s conversion.Scope) error {
			selector, err := labels.Parse(*in)
			if err != nil {
				return err
			}
			*out = selector
			return nil
		},
		func(in *string, out *fields.Selector, s conversion.Scope) error {
			selector, err := fields.ParseSelector(*in)
			if err != nil {
				return err
			}
			*out = selector
			return nil
		},
		func(in *labels.Selector, out *string, s conversion.Scope) error {
			if *in == nil {
				return nil
			}
			*out = (*in).String()
			return nil
		},
		func(in *fields.Selector, out *string, s conversion.Scope) error {
			if *in == nil {
				return nil
			}
			*out = (*in).String()
			return nil
		},
		func(in *resource.Quantity, out *resource.Quantity, s conversion.Scope) error {
			// Cannot deep copy these, because inf.Dec has unexported fields.
			*out = *in.Copy()
			return nil
		},
	)
}
Example #4
0
// FuzzerFor can randomly populate api objects that are destined for version.
func FuzzerFor(t *testing.T, version string, src rand.Source) *fuzz.Fuzzer {
	f := fuzz.New().NilChance(.5).NumElements(1, 1)
	if src != nil {
		f.RandSource(src)
	}
	f.Funcs(
		func(j *runtime.PluginBase, c fuzz.Continue) {
			// Do nothing; this struct has only a Kind field and it must stay blank in memory.
		},
		func(j *runtime.TypeMeta, c fuzz.Continue) {
			// We have to customize the randomization of TypeMetas because their
			// APIVersion and Kind must remain blank in memory.
			j.APIVersion = ""
			j.Kind = ""
		},
		func(j *api.TypeMeta, c fuzz.Continue) {
			// We have to customize the randomization of TypeMetas because their
			// APIVersion and Kind must remain blank in memory.
			j.APIVersion = ""
			j.Kind = ""
		},
		func(j *api.ObjectMeta, c fuzz.Continue) {
			j.Name = c.RandString()
			j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
			j.SelfLink = c.RandString()
			j.UID = types.UID(c.RandString())
			j.GenerateName = c.RandString()

			var sec, nsec int64
			c.Fuzz(&sec)
			c.Fuzz(&nsec)
			j.CreationTimestamp = util.Unix(sec, nsec).Rfc3339Copy()
		},
		func(j *api.ObjectReference, c fuzz.Continue) {
			// We have to customize the randomization of TypeMetas because their
			// APIVersion and Kind must remain blank in memory.
			j.APIVersion = c.RandString()
			j.Kind = c.RandString()
			j.Namespace = c.RandString()
			j.Name = c.RandString()
			j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
			j.FieldPath = c.RandString()
		},
		func(j *api.ListMeta, c fuzz.Continue) {
			j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
			j.SelfLink = c.RandString()
		},
		func(j *api.ListOptions, c fuzz.Continue) {
			// TODO: add some parsing
			j.LabelSelector, _ = labels.Parse("a=b")
			j.FieldSelector, _ = fields.ParseSelector("a=b")
		},
		func(j *api.PodPhase, c fuzz.Continue) {
			statuses := []api.PodPhase{api.PodPending, api.PodRunning, api.PodFailed, api.PodUnknown}
			*j = statuses[c.Rand.Intn(len(statuses))]
		},
		func(j *api.PodTemplateSpec, c fuzz.Continue) {
			// TODO: v1beta1/2 can't round trip a nil template correctly, fix by having v1beta1/2
			// conversion compare converted object to nil via DeepEqual
			j.ObjectMeta = api.ObjectMeta{}
			c.Fuzz(&j.ObjectMeta)
			j.ObjectMeta = api.ObjectMeta{Labels: j.ObjectMeta.Labels}
			j.Spec = api.PodSpec{}
			c.Fuzz(&j.Spec)
		},
		func(j *api.Binding, c fuzz.Continue) {
			c.Fuzz(&j.ObjectMeta)
			j.Target.Name = c.RandString()
		},
		func(j *api.ReplicationControllerSpec, c fuzz.Continue) {
			c.FuzzNoCustom(j) // fuzz self without calling this function again
			//j.TemplateRef = nil // this is required for round trip
		},
		func(j *api.ReplicationControllerStatus, c fuzz.Continue) {
			// only replicas round trips
			j.Replicas = int(c.RandUint64())
		},
		func(j *api.List, c fuzz.Continue) {
			c.FuzzNoCustom(j) // fuzz self without calling this function again
			// TODO: uncomment when round trip starts from a versioned object
			if false { //j.Items == nil {
				j.Items = []runtime.Object{}
			}
		},
		func(j *runtime.Object, c fuzz.Continue) {
			// TODO: uncomment when round trip starts from a versioned object
			if true { //c.RandBool() {
				*j = &runtime.Unknown{
					TypeMeta: runtime.TypeMeta{Kind: "Something", APIVersion: "unknown"},
					RawJSON:  []byte(`{"apiVersion":"unknown","kind":"Something","someKey":"someValue"}`),
				}
			} else {
				types := []runtime.Object{&api.Pod{}, &api.ReplicationController{}}
				t := types[c.Rand.Intn(len(types))]
				c.Fuzz(t)
				*j = t
			}
		},
		func(pb map[docker.Port][]docker.PortBinding, c fuzz.Continue) {
			// This is necessary because keys with nil values get omitted.
			// TODO: Is this a bug?
			pb[docker.Port(c.RandString())] = []docker.PortBinding{
				{c.RandString(), c.RandString()},
				{c.RandString(), c.RandString()},
			}
		},
		func(pm map[string]docker.PortMapping, c fuzz.Continue) {
			// This is necessary because keys with nil values get omitted.
			// TODO: Is this a bug?
			pm[c.RandString()] = docker.PortMapping{
				c.RandString(): c.RandString(),
			}
		},
		func(q *resource.Quantity, c fuzz.Continue) {
			// Real Quantity fuzz testing is done elsewhere;
			// this limited subset of functionality survives
			// round-tripping to v1beta1/2.
			q.Amount = &inf.Dec{}
			q.Format = resource.DecimalExponent
			//q.Amount.SetScale(inf.Scale(-c.Intn(12)))
			q.Amount.SetUnscaled(c.Int63n(1000))
		},
		func(p *api.PullPolicy, c fuzz.Continue) {
			policies := []api.PullPolicy{api.PullAlways, api.PullNever, api.PullIfNotPresent}
			*p = policies[c.Rand.Intn(len(policies))]
		},
		func(rp *api.RestartPolicy, c fuzz.Continue) {
			policies := []api.RestartPolicy{api.RestartPolicyAlways, api.RestartPolicyNever, api.RestartPolicyOnFailure}
			*rp = policies[c.Rand.Intn(len(policies))]
		},
		func(vs *api.VolumeSource, c fuzz.Continue) {
			// Exactly one of the fields must be set.
			v := reflect.ValueOf(vs).Elem()
			i := int(c.RandUint64() % uint64(v.NumField()))
			v = v.Field(i).Addr()
			// Use a new fuzzer which cannot populate nil to ensure one field will be set.
			fuzz.New().NilChance(0).NumElements(1, 1).Fuzz(v.Interface())
		},
		func(d *api.DNSPolicy, c fuzz.Continue) {
			policies := []api.DNSPolicy{api.DNSClusterFirst, api.DNSDefault}
			*d = policies[c.Rand.Intn(len(policies))]
		},
		func(p *api.Protocol, c fuzz.Continue) {
			protocols := []api.Protocol{api.ProtocolTCP, api.ProtocolUDP}
			*p = protocols[c.Rand.Intn(len(protocols))]
		},
		func(p *api.ServiceAffinity, c fuzz.Continue) {
			types := []api.ServiceAffinity{api.ServiceAffinityClientIP, api.ServiceAffinityNone}
			*p = types[c.Rand.Intn(len(types))]
		},
		func(p *api.ServiceType, c fuzz.Continue) {
			types := []api.ServiceType{api.ServiceTypeClusterIP, api.ServiceTypeNodePort, api.ServiceTypeLoadBalancer}
			*p = types[c.Rand.Intn(len(types))]
		},
		func(ct *api.Container, c fuzz.Continue) {
			c.FuzzNoCustom(ct)                                          // fuzz self without calling this function again
			ct.TerminationMessagePath = "/" + ct.TerminationMessagePath // Must be non-empty
		},
		func(ev *api.EnvVar, c fuzz.Continue) {
			ev.Name = c.RandString()
			if c.RandBool() {
				ev.Value = c.RandString()
			} else {
				ev.ValueFrom = &api.EnvVarSource{}
				ev.ValueFrom.FieldRef = &api.ObjectFieldSelector{}

				versions := []string{"v1beta1", "v1beta2", "v1beta3"}

				ev.ValueFrom.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))]
				ev.ValueFrom.FieldRef.FieldPath = c.RandString()
			}
		},
		func(sc *api.SecurityContext, c fuzz.Continue) {
			c.FuzzNoCustom(sc) // fuzz self without calling this function again
			priv := c.RandBool()
			sc.Privileged = &priv
			sc.Capabilities = &api.Capabilities{
				Add:  make([]api.Capability, 0),
				Drop: make([]api.Capability, 0),
			}
			c.Fuzz(&sc.Capabilities.Add)
			c.Fuzz(&sc.Capabilities.Drop)
		},
		func(e *api.Event, c fuzz.Continue) {
			c.FuzzNoCustom(e) // fuzz self without calling this function again
			// Fix event count to 1, otherwise, if a v1beta1 or v1beta2 event has a count set arbitrarily, it's count is ignored
			if e.FirstTimestamp.IsZero() {
				e.Count = 1
			} else {
				c.Fuzz(&e.Count)
			}
		},
		func(s *api.Secret, c fuzz.Continue) {
			c.FuzzNoCustom(s) // fuzz self without calling this function again
			s.Type = api.SecretTypeOpaque
		},
		func(pv *api.PersistentVolume, c fuzz.Continue) {
			c.FuzzNoCustom(pv) // fuzz self without calling this function again
			types := []api.PersistentVolumePhase{api.VolumeAvailable, api.VolumePending, api.VolumeBound, api.VolumeReleased, api.VolumeFailed}
			pv.Status.Phase = types[c.Rand.Intn(len(types))]
			pv.Status.Message = c.RandString()
			reclamationPolicies := []api.PersistentVolumeReclaimPolicy{api.PersistentVolumeReclaimRecycle, api.PersistentVolumeReclaimRetain}
			pv.Spec.PersistentVolumeReclaimPolicy = reclamationPolicies[c.Rand.Intn(len(reclamationPolicies))]
		},
		func(pvc *api.PersistentVolumeClaim, c fuzz.Continue) {
			c.FuzzNoCustom(pvc) // fuzz self without calling this function again
			types := []api.PersistentVolumeClaimPhase{api.ClaimBound, api.ClaimPending}
			pvc.Status.Phase = types[c.Rand.Intn(len(types))]
		},
		func(s *api.NamespaceSpec, c fuzz.Continue) {
			s.Finalizers = []api.FinalizerName{api.FinalizerQingYuan}
		},
		func(s *api.NamespaceStatus, c fuzz.Continue) {
			s.Phase = api.NamespaceActive
		},
		func(http *api.HTTPGetAction, c fuzz.Continue) {
			c.FuzzNoCustom(http)        // fuzz self without calling this function again
			http.Path = "/" + http.Path // can't be blank
		},
		func(ss *api.ServiceSpec, c fuzz.Continue) {
			c.FuzzNoCustom(ss) // fuzz self without calling this function again
			if len(ss.Ports) == 0 {
				// There must be at least 1 port.
				ss.Ports = append(ss.Ports, api.ServicePort{})
				c.Fuzz(&ss.Ports[0])
			}
			for i := range ss.Ports {
				switch ss.Ports[i].TargetPort.Kind {
				case util.IntstrInt:
					ss.Ports[i].TargetPort.IntVal = 1 + ss.Ports[i].TargetPort.IntVal%65535 // non-zero
				case util.IntstrString:
					ss.Ports[i].TargetPort.StrVal = "x" + ss.Ports[i].TargetPort.StrVal // non-empty
				}
			}
		},
		func(n *api.Node, c fuzz.Continue) {
			c.FuzzNoCustom(n)
			n.Spec.ExternalID = "external"
		},
	)
	return f
}
Example #5
0
func TestListNamespaceListSelection(t *testing.T) {
	fakeEtcdClient, helper := newHelper(t)
	key := etcdtest.AddPrefix("/namespaces")
	fakeEtcdClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Namespace{
						ObjectMeta: api.ObjectMeta{Name: "foo"},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Namespace{
						ObjectMeta: api.ObjectMeta{Name: "bar"},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Namespace{
						ObjectMeta: api.ObjectMeta{Name: "baz"},
						Status:     api.NamespaceStatus{Phase: api.NamespaceTerminating},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Namespace{
						ObjectMeta: api.ObjectMeta{
							Name:   "qux",
							Labels: map[string]string{"label": "qux"},
						},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Namespace{
						ObjectMeta: api.ObjectMeta{Name: "zot"},
					})},
				},
			},
		},
	}
	storage, _, _ := NewStorage(helper)
	ctx := api.NewContext()
	table := []struct {
		label, field string
		expectedIDs  util.StringSet
	}{
		{
			expectedIDs: util.NewStringSet("foo", "bar", "baz", "qux", "zot"),
		}, {
			field:       "name=zot",
			expectedIDs: util.NewStringSet("zot"),
		}, {
			label:       "label=qux",
			expectedIDs: util.NewStringSet("qux"),
		}, {
			field:       "status.phase=Terminating",
			expectedIDs: util.NewStringSet("baz"),
		},
	}

	for index, item := range table {
		label, err := labels.Parse(item.label)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		field, err := fields.ParseSelector(item.field)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		namespacesObj, err := storage.List(ctx, label, field)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
		}
		namespaces := namespacesObj.(*api.NamespaceList)

		set := util.NewStringSet()
		for i := range namespaces.Items {
			set.Insert(namespaces.Items[i].Name)
		}
		if e, a := len(item.expectedIDs), len(set); e != a {
			t.Errorf("%v: Expected %v, got %v", index, item.expectedIDs, set)
		}
	}
}
Example #6
0
func TestListPodListSelection(t *testing.T) {
	fakeEtcdClient, helper := newHelper(t)
	ctx := api.NewDefaultContext()
	storage := NewStorage(helper, nil).Pod
	rootKey := etcdtest.AddPrefix("pods/default")
	key := etcdtest.AddPrefix("pods/default/zot")
	fakeEtcdClient.Data[rootKey] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Pod{
						ObjectMeta: api.ObjectMeta{Name: "foo"},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Pod{
						ObjectMeta: api.ObjectMeta{Name: "bar"},
						Spec:       api.PodSpec{NodeName: "barhost"},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Pod{
						ObjectMeta: api.ObjectMeta{Name: "baz"},
						Status:     api.PodStatus{Phase: api.PodFailed},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Pod{
						ObjectMeta: api.ObjectMeta{
							Name:   "qux",
							Labels: map[string]string{"label": "qux"},
						},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.Pod{
						ObjectMeta: api.ObjectMeta{Name: "zot"},
					})},
				},
			},
		},
	}
	fakeEtcdClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Value: runtime.EncodeOrDie(latest.Codec, &api.Pod{
					ObjectMeta: api.ObjectMeta{Name: "zot"},
				}),
			},
		},
	}

	table := []struct {
		label, field string
		expectedIDs  util.StringSet
	}{
		{
			expectedIDs: util.NewStringSet("foo", "bar", "baz", "qux", "zot"),
		}, {
			field:       "metadata.name=zot",
			expectedIDs: util.NewStringSet("zot"),
		}, {
			label:       "label=qux",
			expectedIDs: util.NewStringSet("qux"),
		}, {
			field:       "status.phase=Failed",
			expectedIDs: util.NewStringSet("baz"),
		}, {
			field:       "spec.nodeName=barhost",
			expectedIDs: util.NewStringSet("bar"),
		}, {
			field:       "spec.nodeName=",
			expectedIDs: util.NewStringSet("foo", "baz", "qux", "zot"),
		}, {
			field:       "spec.nodeName!=",
			expectedIDs: util.NewStringSet("bar"),
		},
	}

	for index, item := range table {
		label, err := labels.Parse(item.label)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		field, err := fields.ParseSelector(item.field)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		podsObj, err := storage.List(ctx, label, field)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
		}
		pods := podsObj.(*api.PodList)

		set := util.NewStringSet()
		for i := range pods.Items {
			set.Insert(pods.Items[i].Name)
		}
		if e, a := len(item.expectedIDs), len(set); e != a {
			t.Errorf("%v: Expected %v, got %v", index, item.expectedIDs, set)
		}
		/*for _, pod := range pods.Items {
			if !item.expectedIDs.Has(pod.Name) {
				t.Errorf("%v: Unexpected pod %v", index, pod.Name)
			}
			t.Logf("%v: Got pod Name: %v", index, pod.Name)
		}*/
	}
}
Example #7
0
func TestListResourceQuotaListSelection(t *testing.T) {
	fakeEtcdClient, helper := newHelper(t)
	storage, _ := NewStorage(helper)
	ctx := api.NewDefaultContext()
	key := storage.Etcd.KeyRootFunc(ctx)
	key = etcdtest.AddPrefix(key)
	fakeEtcdClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{Value: runtime.EncodeOrDie(latest.Codec, &api.ResourceQuota{
						ObjectMeta: api.ObjectMeta{Name: "foo"},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.ResourceQuota{
						ObjectMeta: api.ObjectMeta{
							Name:   "qux",
							Labels: map[string]string{"label": "qux"},
						},
					})},
					{Value: runtime.EncodeOrDie(latest.Codec, &api.ResourceQuota{
						ObjectMeta: api.ObjectMeta{Name: "zot"},
					})},
				},
			},
		},
	}

	table := []struct {
		label, field string
		expectedIDs  util.StringSet
	}{
		{
			expectedIDs: util.NewStringSet("foo", "qux", "zot"),
		}, {
			field:       "name=zot",
			expectedIDs: util.NewStringSet("zot"),
		}, {
			label:       "label=qux",
			expectedIDs: util.NewStringSet("qux"),
		},
	}

	for index, item := range table {
		label, err := labels.Parse(item.label)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		field, err := fields.ParseSelector(item.field)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		resourcequotasObj, err := storage.List(ctx, label, field)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
		}
		resourcequotas := resourcequotasObj.(*api.ResourceQuotaList)

		set := util.NewStringSet()
		for i := range resourcequotas.Items {
			set.Insert(resourcequotas.Items[i].Name)
		}
		if e, a := len(item.expectedIDs), len(set); e != a {
			t.Errorf("%v: Expected %v, got %v", index, item.expectedIDs, set)
		}
	}
}
Example #8
0
func TestSelectionPredicate(t *testing.T) {
	table := map[string]struct {
		labelSelector, fieldSelector string
		labels                       labels.Set
		fields                       fields.Set
		err                          error
		shouldMatch                  bool
		matchSingleKey               string
	}{
		"A": {
			labelSelector: "name=foo",
			fieldSelector: "uid=12345",
			labels:        labels.Set{"name": "foo"},
			fields:        fields.Set{"uid": "12345"},
			shouldMatch:   true,
		},
		"B": {
			labelSelector: "name=foo",
			fieldSelector: "uid=12345",
			labels:        labels.Set{"name": "foo"},
			fields:        fields.Set{},
			shouldMatch:   false,
		},
		"C": {
			labelSelector: "name=foo",
			fieldSelector: "uid=12345",
			labels:        labels.Set{},
			fields:        fields.Set{"uid": "12345"},
			shouldMatch:   false,
		},
		"D": {
			fieldSelector:  "metadata.name=12345",
			labels:         labels.Set{},
			fields:         fields.Set{"metadata.name": "12345"},
			shouldMatch:    true,
			matchSingleKey: "12345",
		},
		"error": {
			labelSelector: "name=foo",
			fieldSelector: "uid=12345",
			err:           errors.New("maybe this is a 'wrong object type' error"),
			shouldMatch:   false,
		},
	}

	for name, item := range table {
		parsedLabel, err := labels.Parse(item.labelSelector)
		if err != nil {
			panic(err)
		}
		parsedField, err := fields.ParseSelector(item.fieldSelector)
		if err != nil {
			panic(err)
		}
		sp := &SelectionPredicate{
			Label: parsedLabel,
			Field: parsedField,
			GetAttrs: func(runtime.Object) (label labels.Set, field fields.Set, err error) {
				return item.labels, item.fields, item.err
			},
		}
		got, err := sp.Matches(&Ignored{})
		if e, a := item.err, err; e != a {
			t.Errorf("%v: expected %v, got %v", name, e, a)
			continue
		}
		if e, a := item.shouldMatch, got; e != a {
			t.Errorf("%v: expected %v, got %v", name, e, a)
		}
		if key := item.matchSingleKey; key != "" {
			got, ok := sp.MatchesSingle()
			if !ok {
				t.Errorf("%v: expected single match", name)
			}
			if e, a := key, got; e != a {
				t.Errorf("%v: expected %v, got %v", name, e, a)
			}
		}
	}
}