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database_controller.go
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database_controller.go
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// Copyright (c) 2022 Aiven, Helsinki, Finland. https://aiven.io/
package controllers
import (
"context"
"fmt"
"strconv"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/aiven/aiven-go-client"
"github.com/aiven/aiven-operator/api/v1alpha1"
)
// DatabaseReconciler reconciles a Database object
type DatabaseReconciler struct {
Controller
}
// DatabaseHandler handles an Aiven Database
type DatabaseHandler struct{}
// +kubebuilder:rbac:groups=aiven.io,resources=databases,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=aiven.io,resources=databases/status,verbs=get;update;patch
func (r *DatabaseReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
return r.reconcileInstance(ctx, req, DatabaseHandler{}, &v1alpha1.Database{})
}
func (r *DatabaseReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&v1alpha1.Database{}).
Complete(r)
}
func (h DatabaseHandler) createOrUpdate(avn *aiven.Client, i client.Object) error {
db, err := h.convert(i)
if err != nil {
return err
}
exists, err := h.exists(avn, db)
if err != nil {
return err
}
if !exists {
_, err := avn.Databases.Create(db.Spec.Project, db.Spec.ServiceName, aiven.CreateDatabaseRequest{
Database: db.Name,
LcCollate: db.Spec.LcCollate,
LcType: db.Spec.LcCtype,
})
if err != nil {
return fmt.Errorf("cannot create database on Aiven side: %w", err)
}
}
meta.SetStatusCondition(&db.Status.Conditions,
getInitializedCondition("Created",
"Instance was created or update on Aiven side"))
meta.SetStatusCondition(&db.Status.Conditions,
getRunningCondition(metav1.ConditionUnknown, "Created",
"Instance was created or update on Aiven side, status remains unknown"))
metav1.SetMetaDataAnnotation(&db.ObjectMeta,
processedGenerationAnnotation, strconv.FormatInt(db.GetGeneration(), formatIntBaseDecimal))
return nil
}
func (h DatabaseHandler) delete(avn *aiven.Client, i client.Object) (bool, error) {
db, err := h.convert(i)
if err != nil {
return false, err
}
err = avn.Databases.Delete(
db.Spec.Project,
db.Spec.ServiceName,
db.Name)
if err != nil && !aiven.IsNotFound(err) {
return false, err
}
return true, nil
}
func (h DatabaseHandler) exists(avn *aiven.Client, db *v1alpha1.Database) (bool, error) {
d, err := avn.Databases.Get(db.Spec.Project, db.Spec.ServiceName, db.Name)
if aiven.IsNotFound(err) {
return false, nil
}
return d != nil, nil
}
func (h DatabaseHandler) get(avn *aiven.Client, i client.Object) (*corev1.Secret, error) {
db, err := h.convert(i)
if err != nil {
return nil, err
}
_, err = avn.Databases.Get(db.Spec.Project, db.Spec.ServiceName, db.Name)
if err != nil {
return nil, err
}
meta.SetStatusCondition(&db.Status.Conditions,
getRunningCondition(metav1.ConditionTrue, "CheckRunning",
"Instance is running on Aiven side"))
metav1.SetMetaDataAnnotation(&db.ObjectMeta, instanceIsRunningAnnotation, "true")
return nil, nil
}
func (h DatabaseHandler) checkPreconditions(avn *aiven.Client, i client.Object) (bool, error) {
db, err := h.convert(i)
if err != nil {
return false, err
}
meta.SetStatusCondition(&db.Status.Conditions,
getInitializedCondition("Preconditions", "Checking preconditions"))
return checkServiceIsRunning(avn, db.Spec.Project, db.Spec.ServiceName)
}
func (h DatabaseHandler) convert(i client.Object) (*v1alpha1.Database, error) {
db, ok := i.(*v1alpha1.Database)
if !ok {
return nil, fmt.Errorf("cannot convert object to Database")
}
return db, nil
}