/
mongodbatlasproject_controller.go
188 lines (166 loc) · 6.75 KB
/
mongodbatlasproject_controller.go
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package mongodbatlasproject
import (
"context"
"fmt"
knappekv1alpha1 "github.com/Knappek/mongodbatlas-operator/pkg/apis/knappek/v1alpha1"
"github.com/Knappek/mongodbatlas-operator/pkg/config"
ma "github.com/akshaykarle/go-mongodbatlas/mongodbatlas"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
"sigs.k8s.io/controller-runtime/pkg/source"
)
var log = logf.Log.WithName("controller_mongodbatlasproject")
// Add creates a new MongoDBAtlasProject Controller and adds it to the Manager. The Manager will set fields on the Controller
// and Start it when the Manager is Started.
func Add(mgr manager.Manager) error {
return add(mgr, newReconciler(mgr))
}
func newReconciler(mgr manager.Manager) reconcile.Reconciler {
return &ReconcileMongoDBAtlasProject{
client: mgr.GetClient(),
scheme: mgr.GetScheme(),
atlasClient: config.GetAtlasClient(),
reconciliationConfig: config.GetReconcilitationConfig(),
}
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(mgr manager.Manager, r reconcile.Reconciler) error {
// Create a new controller
c, err := controller.New("mongodbatlasproject-controller", mgr, controller.Options{Reconciler: r})
if err != nil {
return err
}
// Watch for changes to primary resource MongoDBAtlasProject
err = c.Watch(&source.Kind{Type: &knappekv1alpha1.MongoDBAtlasProject{}}, &handler.EnqueueRequestForObject{})
if err != nil {
return err
}
return nil
}
var _ reconcile.Reconciler = &ReconcileMongoDBAtlasProject{}
// ReconcileMongoDBAtlasProject reconciles a MongoDBAtlasProject object
type ReconcileMongoDBAtlasProject struct {
// This client, initialized using mgr.Client() above, is a split client
// that reads objects from the cache and writes to the apiserver
client client.Client
scheme *runtime.Scheme
atlasClient *ma.Client
reconciliationConfig *config.ReconciliationConfig
}
// Reconcile reads that state of the cluster for a MongoDBAtlasProject object and makes changes based on the state read
// and what is in the MongoDBAtlasProject.Spec
// Note:
// The Controller will requeue the Request to be processed again if the returned error is non-nil or
// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
func (r *ReconcileMongoDBAtlasProject) Reconcile(request reconcile.Request) (reconcile.Result, error) {
reqLogger := log.WithValues("Request.Namespace", request.Namespace, "MongoDBAtlasProject.Name", request.Name)
// Fetch the MongoDBAtlasProject instance
atlasProject := &knappekv1alpha1.MongoDBAtlasProject{}
err := r.client.Get(context.TODO(), request.NamespacedName, atlasProject)
if err != nil {
if errors.IsNotFound(err) {
// Request object not found, could have been deleted after reconcile request.
// Owned objects are automatically garbage collected. For additional cleanup logic use finalizers.
// Return and don't requeue
return reconcile.Result{}, nil
}
// Error reading the object - requeue the request.
return reconcile.Result{}, err
}
// Creates a new MongoDB Atlas Project with the name defined in atlasProject iff it does not yet exist
err = createMongoDBAtlasProject(reqLogger, r.atlasClient, atlasProject)
if err != nil {
return reconcile.Result{}, err
}
// Update CR Status
err = r.client.Status().Update(context.TODO(), atlasProject)
if err != nil {
return reconcile.Result{}, err
}
// Check if the MongoDBAtlasProject CR was marked to be deleted
isMongoDBAtlasProjectToBeDeleted := atlasProject.GetDeletionTimestamp() != nil
if isMongoDBAtlasProjectToBeDeleted {
// TODO(user): Add the cleanup steps that the operator needs to do before the CR can be deleted
err := deleteMongoDBAtlasProject(reqLogger, r.atlasClient, atlasProject)
if err != nil {
return reconcile.Result{}, err
}
// Update CR
err = r.client.Update(context.TODO(), atlasProject)
if err != nil {
return reconcile.Result{}, err
}
// Requeue to periodically reconcile the CR MongoDBAtlasProject in order to recreate a manually deleted Atlas DatabaseUser
return reconcile.Result{RequeueAfter: r.reconciliationConfig.Time}, nil
}
// Add finalizer for this CR
if err := r.addFinalizer(reqLogger, atlasProject); err != nil {
return reconcile.Result{}, err
}
// MongoDB Atlas Project successfully created
// Requeue to periodically reconcile the CR MongoDBAtlasProject in order to recreate a manually deleted Atlas project
return reconcile.Result{RequeueAfter: r.reconciliationConfig.Time}, nil
}
func createMongoDBAtlasProject(reqLogger logr.Logger, atlasClient *ma.Client, cr *knappekv1alpha1.MongoDBAtlasProject) error {
params := ma.Project{
OrgID: cr.Spec.OrgID,
Name: cr.Name,
}
// check if project already exists
p, _, err := atlasClient.Projects.GetByName(cr.Name)
if err != nil {
p, _, err = atlasClient.Projects.Create(¶ms)
if err != nil {
return fmt.Errorf("Error creating Project %v: %s", cr.Name, err)
}
reqLogger.Info("Project created.", "MongoDBAtlasProject.ID", p.ID)
}
cr.Status.ID = p.ID
cr.Status.OrgID = p.OrgID
cr.Status.Name = p.Name
cr.Status.Created = p.Created
cr.Status.ClusterCount = p.ClusterCount
return nil
}
func deleteMongoDBAtlasProject(reqLogger logr.Logger, atlasClient *ma.Client, cr *knappekv1alpha1.MongoDBAtlasProject) error {
// check if project exists
p, resp, err := atlasClient.Projects.GetByName(cr.Name)
if err != nil {
if resp.StatusCode == 404 {
reqLogger.Info("Project does not exist in Atlas. Deleting CR.")
// Update finalizer to allow delete CR
cr.SetFinalizers(nil)
return nil
}
return fmt.Errorf("Error getting MongoDB Project %s: %s", cr.Name, err)
}
// project exists and can be deleted
atlasGroupID := p.ID
resp, err = atlasClient.Projects.Delete(atlasGroupID)
if err != nil {
return fmt.Errorf("(%v) Error deleting MongoDB Project %s: %s", resp.StatusCode, atlasGroupID, err)
}
// Update finalizer to allow delete CR
cr.SetFinalizers(nil)
reqLogger.Info("Project deleted.", "MongoDBAtlasProject.ID", atlasGroupID)
return nil
}
func (r *ReconcileMongoDBAtlasProject) addFinalizer(reqLogger logr.Logger, cr *knappekv1alpha1.MongoDBAtlasProject) error {
if len(cr.GetFinalizers()) < 1 && cr.GetDeletionTimestamp() == nil {
cr.SetFinalizers([]string{"finalizer.knappek.com"})
// Update CR
err := r.client.Update(context.TODO(), cr)
if err != nil {
reqLogger.Error(err, "Failed to update Project with finalizer")
return err
}
}
return nil
}