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verrazzano.go
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verrazzano.go
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// Copyright (c) 2023, Oracle and/or its affiliates.
// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
package capi
import (
"context"
"errors"
"fmt"
"github.com/verrazzano/kontainer-engine-driver-ociocne/pkg/capi/object"
"github.com/verrazzano/kontainer-engine-driver-ociocne/pkg/gvr"
"github.com/verrazzano/kontainer-engine-driver-ociocne/pkg/templates"
"github.com/verrazzano/kontainer-engine-driver-ociocne/pkg/variables"
"k8s.io/api/apps/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"time"
)
const (
verrazzanoInstallNamespace = "verrazzano-install"
verrazzanoMCNamespace = "verrazzano-mc"
verrazzanoPlatformOperator = "verrazzano-platform-operator"
verrazzanoModuleOperator = "verrazzano-module-operator"
)
var vzImagePullSecretNamespaces = []string{"verrazzano-install", "verrazzano-module-operator"}
func (c *CAPIClient) InstallModules(ctx context.Context, ki kubernetes.Interface, di dynamic.Interface, v *variables.Variables) error {
if err := c.waitForModuleOperatorReady(ctx, ki); err != nil {
return err
}
_, err := createOrUpdateObjects(ctx, di, object.Modules(v), v)
return err
}
func (c *CAPIClient) UpdateVerrazzano(ctx context.Context, ki kubernetes.Interface, managedDi, adminDi dynamic.Interface, v *variables.Variables) error {
if !v.InstallVerrazzano || v.VerrazzanoResource == "" {
return nil
}
if err := c.waitForVerrazzanoPlatformOperator(ctx, ki); err != nil {
_ = c.plog.Errorf("Failed to deploy Verrazzano Platform Operator")
return err
}
// Create the Verrazzano Resource
if err := createOrUpdateVerrazzano(ctx, managedDi, v); err != nil {
_ = c.plog.Errorf("Failed to install Verrazzano")
return fmt.Errorf("verrazzano install/update error: %v", err)
}
// Create the Verrazzano Managed Cluster Resource
if _, err := createOrUpdateObject(ctx, adminDi, object.Object{
Text: templates.VMC,
}, v); err != nil && !meta.IsNoMatchError(err) {
_ = c.plog.Errorf("Failed to register Verrazzano Managed Cluster")
// IsNoMatchError ignored in case cluster-operator not installed, and the VMC CRD is not present
return fmt.Errorf("vmc registration error: %v", err)
}
return c.plog.Infof("Updated Verrazzano")
}
func (c *CAPIClient) CreateClusterProvisionerConfigMap(ctx context.Context, adminDi dynamic.Interface, v *variables.Variables) error {
// Create the provisioner config map Resource
if _, err := createOrUpdateObject(ctx, adminDi, object.Object{
Text: templates.ProvisionerCM,
}, v); err != nil {
return fmt.Errorf("provisioner configmap creation error: %v", err)
}
return nil
}
func (c *CAPIClient) CreateImagePullSecrets(ctx context.Context, ki kubernetes.Interface, adminDi dynamic.Interface, v *variables.Variables) error {
if v.CreateImagePullSecrets {
for _, ns := range vzImagePullSecretNamespaces {
if err := c.waitForNamespace(ctx, ki, ns); err != nil {
return err
}
v.ImagePullSecretNamespace = ns
if _, err := createOrUpdateObject(ctx, adminDi, object.Object{
Text: templates.ImagePullSecret,
}, v); err != nil {
return fmt.Errorf("image pull secret(s) creation error: %v", err)
}
}
}
return nil
}
// DeleteVerrazzanoResources deletes the Verrazzano resource on the managed cluster, and the VerrazzanoManagedCluster on the admin cluster
func (c *CAPIClient) DeleteVerrazzanoResources(ctx context.Context, managedDi, adminDi dynamic.Interface, v *variables.Variables) error {
if v.UninstallVerrazzano || v.InstallVerrazzano {
if err := deleteVMC(ctx, adminDi, v); err != nil {
return err
}
if err := c.deleteVZ(ctx, managedDi, v); err != nil {
return err
}
}
return nil
}
func deleteVMC(ctx context.Context, adminDi dynamic.Interface, v *variables.Variables) error {
// Clean up the admin cluster VMC
err := adminDi.Resource(gvr.VerrazzanoManagedCluster).Namespace(verrazzanoMCNamespace).Delete(ctx, v.Name, metav1.DeleteOptions{})
if err != nil && !apierrors.IsNotFound(err) && !meta.IsNoMatchError(err) {
// IsNoMatchError ignored in case cluster-operator not installed, and the VMC CRD is not present
return fmt.Errorf("failed to delete Verrazzano Managed cluster: %v", err)
}
return nil
}
func (c *CAPIClient) deleteVZ(ctx context.Context, managedDi dynamic.Interface, v *variables.Variables) error {
// Load the VZ from template and clean the managed cluster VZ
us, err := object.LoadTextTemplate(object.Object{
Text: v.VerrazzanoResource,
}, *v)
if err != nil {
return err
}
if len(us) != 1 {
return fmt.Errorf("expected 1 Verrazzano resource from template, got %d", len(us))
}
vz := us[0]
err = managedDi.Resource(gvr.Verrazzano).Namespace(object.DefaultingNamespace(&vz)).Delete(ctx, vz.GetName(), metav1.DeleteOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
return nil
}
return fmt.Errorf("failed to delete Verrazzano resource: %v", err)
}
_ = c.plog.Infof("Uninstalling Verrazzano")
return errors.New("uninstalling Verrazzano")
}
func (c *CAPIClient) DeleteImagePullSecrets(ctx context.Context, managedDi dynamic.Interface) error {
for _, ns := range vzImagePullSecretNamespaces {
err := managedDi.Resource(gvr.Secret).Namespace(ns).Delete(ctx, variables.DefaultImagePullSecretName, metav1.DeleteOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
return nil
}
return fmt.Errorf("failed to delete image pull secret: %v", err)
}
}
_ = c.plog.Infof("Deleted image pull secrets")
return errors.New("deleting image pull secrets")
}
func createOrUpdateVerrazzano(ctx context.Context, di dynamic.Interface, v *variables.Variables) error {
// Only add the verrazzano version if it has changed
if _, err := cruObject(ctx, di, object.Object{
Text: v.VerrazzanoResource,
}, v, func(u *unstructured.Unstructured) error {
versionString, b, err := unstructured.NestedString(u.Object, "status", "version")
// if no version found, don't force version update
if err != nil || !b {
return nil
}
if versionString == v.VerrazzanoVersion {
return nil
}
return unstructured.SetNestedField(u.Object, v.VerrazzanoVersion, "spec", "version")
}); err != nil {
return err
}
return nil
}
func (c *CAPIClient) waitForNamespace(ctx context.Context, ki kubernetes.Interface, namespace string) error {
endTime := time.Now().Add(c.verrazzanoTimeout)
for {
time.Sleep(c.verrazzanoPollingInterval)
_, err := ki.CoreV1().Namespaces().Get(ctx, namespace, metav1.GetOptions{})
if err != nil {
if !apierrors.IsNotFound(err) {
return err
}
} else {
return nil
}
if time.Now().After(endTime) {
return fmt.Errorf("timed out waiting for creation of namespace %s", namespace)
}
}
}
func (c *CAPIClient) waitForDeployment(ctx context.Context, ki kubernetes.Interface, namespace, name string) error {
endTime := time.Now().Add(c.verrazzanoTimeout)
for {
time.Sleep(c.verrazzanoPollingInterval)
vpoDeployment, err := ki.AppsV1().Deployments(namespace).Get(ctx, name, metav1.GetOptions{})
if err != nil && !apierrors.IsNotFound(err) {
return err
}
if isDeploymentReady(vpoDeployment) {
return nil
}
if time.Now().After(endTime) {
return fmt.Errorf("timed out waiting for deployment %s/%s to be ready", namespace, name)
}
}
}
func (c *CAPIClient) waitForModuleOperatorReady(ctx context.Context, ki kubernetes.Interface) error {
return c.waitForDeployment(ctx, ki, verrazzanoModuleOperator, verrazzanoModuleOperator)
}
func (c *CAPIClient) waitForVerrazzanoPlatformOperator(ctx context.Context, ki kubernetes.Interface) error {
return c.waitForDeployment(ctx, ki, verrazzanoInstallNamespace, verrazzanoPlatformOperator)
}
func isDeploymentReady(deployment *v1.Deployment) bool {
if deployment == nil || deployment.Spec.Replicas == nil {
return false
}
return deployment.Status.ReadyReplicas == *deployment.Spec.Replicas && deployment.Status.AvailableReplicas == *deployment.Spec.Replicas
}