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✨Add metrics to machine and cluster controller #1736

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merged 1 commit into from
Nov 12, 2019
Merged

✨Add metrics to machine and cluster controller #1736

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32 changes: 32 additions & 0 deletions controllers/cluster_controller.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,9 +33,11 @@ import (
"k8s.io/client-go/tools/record"
clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha3"
"sigs.k8s.io/cluster-api/controllers/external"
"sigs.k8s.io/cluster-api/controllers/metrics"
capierrors "sigs.k8s.io/cluster-api/errors"
"sigs.k8s.io/cluster-api/util"
"sigs.k8s.io/cluster-api/util/patch"
"sigs.k8s.io/cluster-api/util/secret"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
Expand Down Expand Up @@ -111,6 +113,7 @@ func (r *ClusterReconciler) Reconcile(req ctrl.Request) (_ ctrl.Result, reterr e
defer func() {
// Always reconcile the Status.Phase field.
r.reconcilePhase(ctx, cluster)
r.reconcileMetrics(ctx, cluster)

// Always attempt to Patch the Cluster object and status after each reconciliation.
if err := patchHelper.Patch(ctx, cluster); err != nil {
Expand Down Expand Up @@ -164,6 +167,35 @@ func (r *ClusterReconciler) reconcile(ctx context.Context, cluster *clusterv1.Cl
return res, kerrors.NewAggregate(errs)
}

func (r *ClusterReconciler) reconcileMetrics(_ context.Context, cluster *clusterv1.Cluster) {

if cluster.Status.ControlPlaneInitialized {
metrics.ClusterControlPlaneReady.WithLabelValues(cluster.Name, cluster.Namespace).Set(1)
} else {
metrics.ClusterControlPlaneReady.WithLabelValues(cluster.Name, cluster.Namespace).Set(0)
}

if cluster.Status.InfrastructureReady {
metrics.ClusterInfrastructureReady.WithLabelValues(cluster.Name, cluster.Namespace).Set(1)
} else {
metrics.ClusterInfrastructureReady.WithLabelValues(cluster.Name, cluster.Namespace).Set(0)
}

// TODO: [wfernandes] pass context here
_, err := secret.Get(r.Client, cluster, secret.Kubeconfig)
if err != nil {
metrics.ClusterKubeconfigReady.WithLabelValues(cluster.Name, cluster.Namespace).Set(0)
} else {
metrics.ClusterKubeconfigReady.WithLabelValues(cluster.Name, cluster.Namespace).Set(1)
}

if cluster.Status.ErrorReason != nil || cluster.Status.ErrorMessage != nil {
metrics.ClusterErrorSet.WithLabelValues(cluster.Name, cluster.Namespace).Set(1)
} else {
metrics.ClusterErrorSet.WithLabelValues(cluster.Name, cluster.Namespace).Set(0)
}
}

// reconcileDelete handles cluster deletion.
func (r *ClusterReconciler) reconcileDelete(ctx context.Context, cluster *clusterv1.Cluster) (reconcile.Result, error) {
logger := r.Log.WithValues("cluster", cluster.Name, "namespace", cluster.Namespace)
Expand Down
252 changes: 179 additions & 73 deletions controllers/cluster_controller_phases_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,90 +20,196 @@ import (
"context"
"testing"

. "github.com/onsi/gomega"
"github.com/pkg/errors"
corev1 "k8s.io/api/core/v1"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/client-go/kubernetes/scheme"
clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha3"
capierrors "sigs.k8s.io/cluster-api/errors"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/client/fake"
"sigs.k8s.io/controller-runtime/pkg/log"
)

func TestClusterReconciler_reconcileKubeconfig(t *testing.T) {
cluster := &clusterv1.Cluster{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster",
},
Status: clusterv1.ClusterStatus{
APIEndpoints: []clusterv1.APIEndpoint{{
Host: "1.2.3.4",
Port: 0,
}},
},
}

tests := []struct {
name string
cluster *clusterv1.Cluster
secret *corev1.Secret
wantErr bool
wantRequeue bool
}{
{
name: "cluster not provisioned, apiEndpoint is not set",
cluster: &clusterv1.Cluster{},
wantErr: false,
},
{
name: "kubeconfig secret found",
cluster: cluster,
secret: &corev1.Secret{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster-kubeconfig",
func TestClusterReconcilePhases(t *testing.T) {
t.Run("reconcile infrastructure", func(t *testing.T) {
cluster := &clusterv1.Cluster{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster",
Namespace: "test-namespace",
},
Status: clusterv1.ClusterStatus{
APIEndpoints: []clusterv1.APIEndpoint{{
Host: "1.2.3.4",
Port: 0,
}},
InfrastructureReady: true,
},
Spec: clusterv1.ClusterSpec{
InfrastructureRef: &corev1.ObjectReference{
APIVersion: "infrastructure.cluster.x-k8s.io/v1alpha2",
Kind: "InfrastructureConfig",
Name: "test",
},
},
}

tests := []struct {
name string
cluster *clusterv1.Cluster
infraRef map[string]interface{}
expectErr bool
}{
{
name: "returns no error if infrastructure ref is nil",
cluster: &clusterv1.Cluster{ObjectMeta: v1.ObjectMeta{Name: "test-cluster", Namespace: "test-namespace"}},
expectErr: false,
},
{
name: "returns error if unable to reconcile infrastructure ref",
cluster: cluster,
expectErr: true,
},
{
name: "returns no error if infra config is marked for deletion",
cluster: cluster,
infraRef: map[string]interface{}{
"kind": "InfrastructureConfig",
"apiVersion": "infrastructure.cluster.x-k8s.io/v1alpha2",
"metadata": map[string]interface{}{
"name": "test",
"namespace": "test-namespace",
"deletionTimestamp": "sometime",
},
},
expectErr: false,
},
wantErr: false,
},
{
name: "kubeconfig secret not found, should return RequeueAfterError",
cluster: cluster,
wantErr: true,
wantRequeue: true,
},
{
name: "invalid ca secret, should return error",
cluster: cluster,
secret: &corev1.Secret{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster-ca",
{
name: "returns no error if infrastructure is marked ready on cluster",
cluster: cluster,
infraRef: map[string]interface{}{
"kind": "InfrastructureConfig",
"apiVersion": "infrastructure.cluster.x-k8s.io/v1alpha2",
"metadata": map[string]interface{}{
"name": "test",
"namespace": "test-namespace",
"deletionTimestamp": "sometime",
},
},
expectErr: false,
},
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
err := clusterv1.AddToScheme(scheme.Scheme)
if err != nil {
t.Fatal(err)
}

c := fake.NewFakeClient(tt.cluster)
if tt.secret != nil {
c = fake.NewFakeClient(tt.cluster, tt.secret)
}
r := &ClusterReconciler{
Client: c,
}
err = r.reconcileKubeconfig(context.Background(), tt.cluster)
if (err != nil) != tt.wantErr {
t.Errorf("reconcileKubeconfig() error = %v, wantErr %v", err, tt.wantErr)
}

_, hasRequeErr := errors.Cause(err).(capierrors.HasRequeueAfterError)
if tt.wantRequeue != hasRequeErr {
t.Errorf("expected RequeAfterError = %v, got %v", tt.wantRequeue, hasRequeErr)
}
})
}
}

for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
RegisterTestingT(t)
err := clusterv1.AddToScheme(scheme.Scheme)
if err != nil {
t.Fatal(err)
}

var c client.Client
if tt.infraRef != nil {
infraConfig := &unstructured.Unstructured{Object: tt.infraRef}
c = fake.NewFakeClient(tt.cluster, infraConfig)
} else {
c = fake.NewFakeClient(tt.cluster)
}
r := &ClusterReconciler{
Client: c,
Log: log.Log,
}

err = r.reconcileInfrastructure(context.Background(), tt.cluster)
if tt.expectErr {
Expect(err).To(HaveOccurred())
} else {
Expect(err).ToNot(HaveOccurred())
}
})
}

})

t.Run("reconcile kubeconfig", func(t *testing.T) {
cluster := &clusterv1.Cluster{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster",
},
Status: clusterv1.ClusterStatus{
APIEndpoints: []clusterv1.APIEndpoint{{
Host: "1.2.3.4",
Port: 0,
}},
},
}

tests := []struct {
name string
cluster *clusterv1.Cluster
secret *corev1.Secret
wantErr bool
wantRequeue bool
}{
{
name: "cluster not provisioned, apiEndpoint is not set",
cluster: &clusterv1.Cluster{},
wantErr: false,
},
{
name: "kubeconfig secret found",
cluster: cluster,
secret: &corev1.Secret{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster-kubeconfig",
},
},
wantErr: false,
},
{
name: "kubeconfig secret not found, should return RequeueAfterError",
cluster: cluster,
wantErr: true,
wantRequeue: true,
},
{
name: "invalid ca secret, should return error",
cluster: cluster,
secret: &corev1.Secret{
ObjectMeta: v1.ObjectMeta{
Name: "test-cluster-ca",
},
},
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
RegisterTestingT(t)
err := clusterv1.AddToScheme(scheme.Scheme)
if err != nil {
t.Fatal(err)
}

c := fake.NewFakeClient(tt.cluster)
if tt.secret != nil {
c = fake.NewFakeClient(tt.cluster, tt.secret)
}
r := &ClusterReconciler{
Client: c,
}
err = r.reconcileKubeconfig(context.Background(), tt.cluster)
if (err != nil) != tt.wantErr {
t.Errorf("reconcileKubeconfig() error = %v, wantErr %v", err, tt.wantErr)
}

_, hasRequeErr := errors.Cause(err).(capierrors.HasRequeueAfterError)
if tt.wantRequeue != hasRequeErr {
t.Errorf("expected RequeAfterError = %v, got %v", tt.wantRequeue, hasRequeErr)
}
})
}
})
}
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