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utils.go
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utils.go
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package dscinitialization
import (
"context"
"crypto/rand"
"reflect"
"time"
corev1 "k8s.io/api/core/v1"
netv1 "k8s.io/api/networking/v1"
authv1 "k8s.io/api/rbac/v1"
apierrs "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/util/retry"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
dsci "github.com/opendatahub-io/opendatahub-operator/v2/apis/dscinitialization/v1alpha1"
)
var (
resourceInterval = 10 * time.Second
resourceTimeout = 1 * time.Minute
)
// createOdhNamespace creates a Namespace with given name and with ODH defaults. The defaults include:
// - Odh specific labels
// - Pod security labels for baseline permissions
// - Network Policies that allow traffic between the ODH namespaces
func (r *DSCInitializationReconciler) createOdhNamespace(dscInit *dsci.DSCInitialization, name string, ctx context.Context) error {
// Expected namespace for the given name
desiredNamespace := &corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Labels: map[string]string{
"opendatahub.io/generated-namespace": "true",
"pod-security.kubernetes.io/enforce": "baseline",
},
},
}
// Create Namespace if doesnot exists
foundNamespace := &corev1.Namespace{}
err := r.Get(ctx, client.ObjectKey{Name: name}, foundNamespace)
if err != nil {
if apierrs.IsNotFound(err) {
r.Log.Info("Creating namespace", "name", name)
// Set Controller reference
//err = ctrl.SetControllerReference(dscInit, desiredNamespace, r.Scheme)
//if err != nil {
// r.Log.Error(err, "Unable to add OwnerReference to the Namespace")
// return err
//}
err = r.Create(ctx, desiredNamespace)
if err != nil && !apierrs.IsAlreadyExists(err) {
r.Log.Error(err, "Unable to create namespace", "name", name)
return err
}
} else {
r.Log.Error(err, "Unable to fetch namespace", "name", name)
return err
}
} else if dscInit.Spec.Monitoring.Enabled && dscInit.Spec.Monitoring.Namespace == name {
err = r.Patch(ctx, foundNamespace, client.RawPatch(types.MergePatchType,
[]byte(`{"metadata": {"labels": {"openshift.io/cluster-monitoring": "true"}}}`)))
if err != nil {
return err
}
}
// Create Monitoring Namespace if it is enabled and not exists
if dscInit.Spec.Monitoring.Enabled {
foundMonitoringNamespace := &corev1.Namespace{}
monitoringName := dscInit.Spec.Monitoring.Namespace
err := r.Get(ctx, client.ObjectKey{Name: monitoringName}, foundMonitoringNamespace)
if err != nil {
if apierrs.IsNotFound(err) {
r.Log.Info("Not found monitoring namespace", "name", monitoringName)
desiredMonitoringNamespace := &corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: monitoringName,
Labels: map[string]string{
"opendatahub.io/generated-namespace": "true",
"pod-security.kubernetes.io/enforce": "baseline",
"openshift.io/cluster-monitoring": "true",
},
},
}
err = r.Create(ctx, desiredMonitoringNamespace)
if err != nil && !apierrs.IsAlreadyExists(err) {
r.Log.Error(err, "Unable to create namespace", "name", monitoringName)
return err
}
} else {
r.Log.Error(err, "Unable to fetch monitoring namespace", "name", monitoringName)
return err
}
}
}
// Create default NetworkPolicy for the namespace
err = r.reconcileDefaultNetworkPolicy(dscInit, name, ctx)
if err != nil {
r.Log.Error(err, "error reconciling network policy ", "name", name)
return err
}
// Create odh-common-config Configmap for the Namespace
err = r.createOdhCommonConfigMap(dscInit, name, ctx)
if err != nil {
r.Log.Error(err, "error creating configmap", "name", "odh-common-config")
return err
}
// Create default Rolebinding for the namespace
err = r.createDefaultRoleBinding(dscInit, name, ctx)
if err != nil {
r.Log.Error(err, "error creating rolebinding", "name", name)
return err
}
return nil
}
func (r *DSCInitializationReconciler) createDefaultRoleBinding(dscInit *dsci.DSCInitialization, name string, ctx context.Context) error {
// Expected namespace for the given name
desiredRoleBinding := &authv1.RoleBinding{
TypeMeta: metav1.TypeMeta{},
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: name,
},
Subjects: []authv1.Subject{
{
Kind: "ServiceAccount",
Namespace: name,
Name: "default",
},
},
RoleRef: authv1.RoleRef{
APIGroup: "rbac.authorization.k8s.io",
Kind: "ClusterRole",
Name: "system:openshift:scc:anyuid",
},
}
// Create RoleBinding if doesnot exists
foundRoleBinding := &authv1.RoleBinding{}
err := r.Client.Get(ctx, client.ObjectKey{Name: name, Namespace: name}, foundRoleBinding)
if err != nil {
if apierrs.IsNotFound(err) {
// Set Controller reference
err = ctrl.SetControllerReference(dscInit, desiredRoleBinding, r.Scheme)
if err != nil {
r.Log.Error(err, "Unable to add OwnerReference to the rolebinding")
return err
}
err = r.Client.Create(ctx, desiredRoleBinding)
if err != nil && !apierrs.IsAlreadyExists(err) {
return err
}
} else {
return err
}
}
return nil
}
func (r *DSCInitializationReconciler) reconcileDefaultNetworkPolicy(dscInit *dsci.DSCInitialization, name string, ctx context.Context) error {
// Expected namespace for the given name
desiredNetworkPolicy := &netv1.NetworkPolicy{
TypeMeta: metav1.TypeMeta{},
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: name,
},
Spec: netv1.NetworkPolicySpec{
// open ingress for all port for now, TODO: add explicit port per component
Ingress: []netv1.NetworkPolicyIngressRule{{}},
PolicyTypes: []netv1.PolicyType{
netv1.PolicyTypeIngress,
},
},
}
// Create NetworkPolicy if doesnot exists
foundNetworkPolicy := &netv1.NetworkPolicy{}
justCreated := false
err := r.Client.Get(ctx, client.ObjectKey{Name: name, Namespace: name}, foundNetworkPolicy)
if err != nil {
if apierrs.IsNotFound(err) {
// Set Controller reference
err = ctrl.SetControllerReference(dscInit, desiredNetworkPolicy, r.Scheme)
if err != nil {
r.Log.Error(err, "Unable to add OwnerReference to the Network policy")
return err
}
err = r.Client.Create(ctx, desiredNetworkPolicy)
if err != nil && !apierrs.IsAlreadyExists(err) {
return err
}
justCreated = true
} else {
return err
}
}
// Reconcile the NetworkPolicy spec if it has been manually modified
if !justCreated && !CompareNotebookNetworkPolicies(*desiredNetworkPolicy, *foundNetworkPolicy) {
r.Log.Info("Reconciling Network policy", "name", foundNetworkPolicy.Name)
// Retry the update operation when the ingress controller eventually
// updates the resource version field
err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
// Get the last route revision
if err := r.Get(ctx, types.NamespacedName{
Name: desiredNetworkPolicy.Name,
Namespace: desiredNetworkPolicy.Namespace,
}, foundNetworkPolicy); err != nil {
return err
}
// Reconcile labels and spec field
foundNetworkPolicy.Spec = desiredNetworkPolicy.Spec
foundNetworkPolicy.ObjectMeta.Labels = desiredNetworkPolicy.ObjectMeta.Labels
return r.Update(ctx, foundNetworkPolicy)
})
if err != nil {
r.Log.Error(err, "Unable to reconcile the Network Policy")
return err
}
}
return nil
}
// CompareNotebookNetworkPolicies checks if two services are equal, if not return false
func CompareNotebookNetworkPolicies(np1 netv1.NetworkPolicy, np2 netv1.NetworkPolicy) bool {
// Two network policies will be equal if the labels and specs are identical
return reflect.DeepEqual(np1.ObjectMeta.Labels, np2.ObjectMeta.Labels) &&
reflect.DeepEqual(np1.Spec, np2.Spec)
}
func (r *DSCInitializationReconciler) waitForManagedSecret(name, namespace string) (*corev1.Secret, error) {
managedSecret := &corev1.Secret{}
err := wait.Poll(resourceInterval, resourceTimeout, func() (done bool, err error) {
err = r.Client.Get(context.TODO(), client.ObjectKey{
Namespace: namespace,
Name: name,
}, managedSecret)
if err != nil {
if apierrs.IsNotFound(err) {
return false, nil
}
return false, err
} else {
return true, nil
}
})
return managedSecret, err
}
func GenerateRandomHex(length int) ([]byte, error) {
// Calculate the required number of bytes
numBytes := length / 2
// Create a byte slice with the appropriate size
randomBytes := make([]byte, numBytes)
// Read random bytes from the crypto/rand source
_, err := rand.Read(randomBytes)
if err != nil {
return nil, err
}
return randomBytes, nil
}
func (r *DSCInitializationReconciler) createOdhCommonConfigMap(dscInit *dsci.DSCInitialization, name string, ctx context.Context) error {
// Expected configmap for the given namespace
desiredConfigMap := &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{},
ObjectMeta: metav1.ObjectMeta{
Name: "odh-common-config",
Namespace: name,
},
Data: map[string]string{"namespace": name},
}
// Create Configmap if doesnot exists
foundConfigMap := &corev1.ConfigMap{}
err := r.Client.Get(ctx, client.ObjectKey{Name: name, Namespace: name}, foundConfigMap)
if err != nil {
if apierrs.IsNotFound(err) {
// Set Controller reference
err = ctrl.SetControllerReference(dscInit, foundConfigMap, r.Scheme)
if err != nil {
r.Log.Error(err, "Unable to add OwnerReference to the odh-common-config ConfigMap")
return err
}
err = r.Client.Create(ctx, desiredConfigMap)
if err != nil && !apierrs.IsAlreadyExists(err) {
return err
}
} else {
return err
}
}
return nil
}