/
operator.go
284 lines (254 loc) · 8.63 KB
/
operator.go
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package admin
import (
"fmt"
"github.com/tliron/kutil/kubernetes"
resources "github.com/tliron/reposure/resources/reposure.puccini.cloud/v1alpha1"
apps "k8s.io/api/apps/v1"
core "k8s.io/api/core/v1"
rbac "k8s.io/api/rbac/v1"
apiextensions "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
)
func (self *Client) InstallOperator(sourceRegistryHost string, wait bool) error {
var err error
if sourceRegistryHost, err = self.GetSourceRegistryHost(sourceRegistryHost); err != nil {
return err
}
if _, err = self.createRegistryCustomResourceDefinition(); err != nil {
return err
}
if _, err = self.createOperatorNamespace(); err != nil {
return err
}
var serviceAccount *core.ServiceAccount
if serviceAccount, err = self.createOperatorServiceAccount(); err != nil {
return err
}
if self.ClusterRole != "" {
if _, err = self.createOperatorClusterRoleBinding(serviceAccount, self.ClusterRole); err != nil {
return err
}
}
if !self.ClusterMode {
var role *rbac.Role
if role, err = self.createOperatorRole(); err != nil {
return err
}
if _, err = self.createOperatorRoleBinding(serviceAccount, role); err != nil {
return err
}
}
var operatorDeployment *apps.Deployment
if operatorDeployment, err = self.createOperatorDeployment(sourceRegistryHost, serviceAccount, 1); err != nil {
return err
}
if wait {
if _, err := kubernetes.WaitForDeployment(self.Context, self.Kubernetes, self.Log, self.Namespace, operatorDeployment.Name); err != nil {
return err
}
}
return nil
}
func (self *Client) UninstallOperator(wait bool) {
var gracePeriodSeconds int64 = 0
deleteOptions := meta.DeleteOptions{
GracePeriodSeconds: &gracePeriodSeconds,
}
appName := fmt.Sprintf("%s-operator", self.NamePrefix)
// Deployment
if err := self.Kubernetes.AppsV1().Deployments(self.Namespace).Delete(self.Context, appName, deleteOptions); err != nil {
self.Log.Warningf("%s", err)
}
// Cluster role binding
if err := self.Kubernetes.RbacV1().ClusterRoleBindings().Delete(self.Context, self.NamePrefix, deleteOptions); err != nil {
self.Log.Warningf("%s", err)
}
if !self.ClusterMode {
// Role binding
if err := self.Kubernetes.RbacV1().RoleBindings(self.Namespace).Delete(self.Context, self.NamePrefix, deleteOptions); err != nil {
self.Log.Warningf("%s", err)
}
// Role
if err := self.Kubernetes.RbacV1().Roles(self.Namespace).Delete(self.Context, self.NamePrefix, deleteOptions); err != nil {
self.Log.Warningf("%s", err)
}
}
// Service account
if err := self.Kubernetes.CoreV1().ServiceAccounts(self.Namespace).Delete(self.Context, self.NamePrefix, deleteOptions); err != nil {
self.Log.Warningf("%s", err)
}
// Registry custom resource definition
if err := self.APIExtensions.ApiextensionsV1().CustomResourceDefinitions().Delete(self.Context, resources.RegistryCustomResourceDefinition.Name, deleteOptions); err != nil {
self.Log.Warningf("%s", err)
}
if wait {
getOptions := meta.GetOptions{}
kubernetes.WaitForDeletion(self.Log, "operator deployment", func() bool {
_, err := self.Kubernetes.AppsV1().Deployments(self.Namespace).Get(self.Context, appName, getOptions)
return err == nil
})
kubernetes.WaitForDeletion(self.Log, "cluster role binding", func() bool {
_, err := self.Kubernetes.RbacV1().ClusterRoleBindings().Get(self.Context, self.NamePrefix, getOptions)
return err == nil
})
if !self.ClusterMode {
kubernetes.WaitForDeletion(self.Log, "role binding", func() bool {
_, err := self.Kubernetes.RbacV1().RoleBindings(self.Namespace).Get(self.Context, self.NamePrefix, getOptions)
return err == nil
})
kubernetes.WaitForDeletion(self.Log, "role", func() bool {
_, err := self.Kubernetes.RbacV1().Roles(self.Namespace).Get(self.Context, self.NamePrefix, getOptions)
return err == nil
})
}
kubernetes.WaitForDeletion(self.Log, "service account", func() bool {
_, err := self.Kubernetes.CoreV1().ServiceAccounts(self.Namespace).Get(self.Context, self.NamePrefix, getOptions)
return err == nil
})
kubernetes.WaitForDeletion(self.Log, "registry custom resource definition", func() bool {
_, err := self.APIExtensions.ApiextensionsV1().CustomResourceDefinitions().Get(self.Context, resources.RegistryCustomResourceDefinition.Name, getOptions)
return err == nil
})
}
}
func (self *Client) createOperatorNamespace() (*core.Namespace, error) {
return self.CreateNamespace(&core.Namespace{
ObjectMeta: meta.ObjectMeta{
Name: self.Namespace,
},
})
}
func (self *Client) createOperatorServiceAccount() (*core.ServiceAccount, error) {
return self.CreateServiceAccount(&core.ServiceAccount{
ObjectMeta: meta.ObjectMeta{
Name: self.NamePrefix,
Labels: self.Labels(fmt.Sprintf("%s-operator", self.NamePrefix), "operator", self.Namespace),
},
})
}
func (self *Client) createRegistryCustomResourceDefinition() (*apiextensions.CustomResourceDefinition, error) {
return self.CreateCustomResourceDefinition(&resources.RegistryCustomResourceDefinition)
}
func (self *Client) createOperatorRole() (*rbac.Role, error) {
return self.CreateRole(&rbac.Role{
ObjectMeta: meta.ObjectMeta{
Name: self.NamePrefix,
Labels: self.Labels(fmt.Sprintf("%s-operator", self.NamePrefix), "operator", self.Namespace),
},
Rules: []rbac.PolicyRule{
{
APIGroups: []string{rbac.APIGroupAll},
Resources: []string{rbac.ResourceAll},
Verbs: []string{rbac.VerbAll},
},
},
})
}
func (self *Client) createOperatorRoleBinding(serviceAccount *core.ServiceAccount, role *rbac.Role) (*rbac.RoleBinding, error) {
return self.CreateRoleBinding(&rbac.RoleBinding{
ObjectMeta: meta.ObjectMeta{
Name: self.NamePrefix,
Labels: self.Labels(fmt.Sprintf("%s-operator", self.NamePrefix), "operator", self.Namespace),
},
Subjects: []rbac.Subject{
{
Kind: rbac.ServiceAccountKind, // serviceAccount.Kind is empty
Name: serviceAccount.Name,
Namespace: self.Namespace, // required
},
},
RoleRef: rbac.RoleRef{
APIGroup: rbac.GroupName, // role.GroupVersionKind().Group is empty
Kind: "Role", // role.Kind is empty
Name: role.Name,
},
})
}
func (self *Client) createOperatorClusterRoleBinding(serviceAccount *core.ServiceAccount, role string) (*rbac.ClusterRoleBinding, error) {
return self.CreateClusterRoleBinding(&rbac.ClusterRoleBinding{
ObjectMeta: meta.ObjectMeta{
Name: self.NamePrefix,
Labels: self.Labels(fmt.Sprintf("%s-operator", self.NamePrefix), "operator", self.Namespace),
},
Subjects: []rbac.Subject{
{
Kind: rbac.ServiceAccountKind, // serviceAccount.Kind is empty
Name: serviceAccount.Name,
Namespace: self.Namespace, // required
},
},
RoleRef: rbac.RoleRef{
APIGroup: rbac.GroupName,
Kind: "ClusterRole",
Name: role,
},
})
}
func (self *Client) createOperatorDeployment(sourceRegistryHost string, serviceAccount *core.ServiceAccount, replicas int32) (*apps.Deployment, error) {
appName := fmt.Sprintf("%s-operator", self.NamePrefix)
labels := self.Labels(appName, "operator", self.Namespace)
deployment := &apps.Deployment{
ObjectMeta: meta.ObjectMeta{
Name: appName,
Labels: labels,
},
Spec: apps.DeploymentSpec{
Replicas: &replicas,
Selector: &meta.LabelSelector{
MatchLabels: labels,
},
Template: core.PodTemplateSpec{
ObjectMeta: meta.ObjectMeta{
Labels: labels,
},
Spec: core.PodSpec{
ServiceAccountName: serviceAccount.Name,
Containers: []core.Container{
{
Name: "operator",
Image: fmt.Sprintf("%s/%s", sourceRegistryHost, self.OperatorImageReference),
ImagePullPolicy: core.PullAlways,
Env: []core.EnvVar{
{
Name: "REPOSURE_OPERATOR_concurrency",
Value: "3",
},
{
Name: "REPOSURE_OPERATOR_verbose",
Value: "1",
},
{
// For kutil's kubernetes.GetConfiguredNamespace
Name: "KUBERNETES_NAMESPACE",
ValueFrom: &core.EnvVarSource{
FieldRef: &core.ObjectFieldSelector{
FieldPath: "metadata.namespace",
},
},
},
},
LivenessProbe: &core.Probe{
ProbeHandler: core.ProbeHandler{
HTTPGet: &core.HTTPGetAction{
Port: intstr.FromInt(8086),
Path: "/live",
},
},
},
ReadinessProbe: &core.Probe{
ProbeHandler: core.ProbeHandler{
HTTPGet: &core.HTTPGetAction{
Port: intstr.FromInt(8086),
Path: "/ready",
},
},
},
},
},
},
},
},
}
return self.CreateDeployment(deployment)
}