/
util.go
124 lines (108 loc) · 4.18 KB
/
util.go
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package util
import (
"context"
"crypto/md5"
"fmt"
"strconv"
"github.com/go-logr/logr"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/discovery"
"sigs.k8s.io/controller-runtime/pkg/client"
kedav1alpha1 "github.com/kedacore/keda-olm-operator/apis/keda/v1alpha1"
)
const (
metricsServerPodLabelKey = "app"
metricsServerPodLabelValue = "keda-metrics-apiserver"
)
func CalculateConfigMapDataCheckSum(m map[string]string) string {
var data string
for k, v := range m {
data = data + k + v
}
return fmt.Sprintf("%x", md5.Sum([]byte(data)))
}
func CalculateSecretedDataCheckSum(m map[string][]byte) string {
var data string
for k, v := range m {
data = data + k + string(v)
}
return fmt.Sprintf("%x", md5.Sum([]byte(data)))
}
func DeleteMetricsServerPod(ctx context.Context, metricsServerNamespace string, logger logr.Logger, cl client.Client) error {
selector := make(map[string]string)
selector[metricsServerPodLabelKey] = metricsServerPodLabelValue
podList := &corev1.PodList{}
opts := []client.ListOption{
client.InNamespace(metricsServerNamespace),
client.MatchingLabels(selector),
}
err := cl.List(ctx, podList, opts...)
if err != nil {
return err
}
if len(podList.Items) == 0 {
logger.Info("KEDA Metrics Server is not running -> no need to restart it")
return nil
} else if len(podList.Items) != 1 {
return fmt.Errorf("exactly one Pod object should match label %s", selector)
}
pod := &podList.Items[0]
// restart Metrics Server Pod
return cl.Delete(ctx, pod)
}
func UpdateKedaControllerStatus(ctx context.Context, cl client.Client, kedaController *kedav1alpha1.KedaController, status *kedav1alpha1.KedaControllerStatus) error {
patch := client.MergeFrom(kedaController.DeepCopy())
kedaController.Status = *status
return cl.Status().Patch(ctx, kedaController, patch)
}
func RunningOnOpenshift(ctx context.Context, logger logr.Logger, cl client.Client) bool {
gvk := schema.GroupVersionKind{Group: "route.openshift.io", Version: "v1", Kind: "route"}
return isGvkPresent(ctx, logger, cl, gvk)
}
// RunningOnClusterWithoutSeccompProfileDefault returns true if running on cluster <= 1.23.Z which lacks the RuntimeDefault seccomp profile
func RunningOnClusterWithoutSeccompProfileDefault(logger logr.Logger, discoveryClient *discovery.DiscoveryClient) bool {
var major, minor int
if discoveryClient == nil {
logger.Error(nil, "Unable to get cluster version without discoveryClient")
return false
}
versionInfo, err := discoveryClient.ServerVersion()
if err != nil {
logger.Error(err, "Unable to get cluster version from ServerVersion()")
return false
}
if major, err = strconv.Atoi(versionInfo.Major); err != nil {
logger.Error(err, "Unable to get numeric major cluster version", "major", versionInfo.Major)
return false
}
if minor, err = strconv.Atoi(versionInfo.Minor); err != nil {
logger.Error(err, "Unable to get numeric minor cluster version", "minor", versionInfo.Minor)
return false
}
return major <= 1 && minor <= 23
}
// HasServiceMonitorCRD returns true if the ServiceMonitor CRD is present in the cluster, false otherwise
func HasServiceMonitorCRD(ctx context.Context, logger logr.Logger, cl client.Client) bool {
gvk := schema.GroupVersionKind{Group: "monitoring.coreos.com", Version: "v1", Kind: "ServiceMonitor"}
return isGvkPresent(ctx, logger, cl, gvk)
}
// HasPodMonitorCRD returns true if the monitoring stack (i.e. Prometheus) is present, false otherwise
func HasPodMonitorCRD(ctx context.Context, logger logr.Logger, cl client.Client) bool {
gvk := schema.GroupVersionKind{Group: "monitoring.coreos.com", Version: "v1", Kind: "PodMonitor"}
return isGvkPresent(ctx, logger, cl, gvk)
}
// isGvkPresent returns whether the given gvk is present or not
func isGvkPresent(ctx context.Context, logger logr.Logger, cl client.Client, gvk schema.GroupVersionKind) bool {
list := &unstructured.UnstructuredList{}
list.SetGroupVersionKind(gvk)
if err := cl.List(ctx, list, &client.ListOptions{}); err != nil {
if !meta.IsNoMatchError(err) {
logger.Error(err, "Unable to query", "gvk", gvk.String())
}
return false
}
return true
}