CLOUDP-81282: support for Atlas Domain configuration (#64)

Author: crew-helper

.github/actions/deploy/entrypoint.sh

@@ -11,7 +11,7 @@ controller-gen crd:crdVersions=v1 rbac:roleName=manager-role webhook paths="./..
 ns=mongodb-atlas-kubernetes-system
 kubectl delete deployment mongodb-atlas-kubernetes-controller-manager -n "${ns}" || true # temporary
 cd config/manager && kustomize edit set image controller="${INPUT_IMAGE_URL}"
-cd - && kustomize build config/default | kubectl apply -f -
+cd - && kustomize build config/dev | kubectl apply -f -
 
 # Ensuring the Atlas credentials Secret
 kubectl delete secrets my-atlas-key --ignore-not-found -n "${ns}"

config/default/manager_auth_proxy_patch.yaml

@@ -23,3 +23,4 @@ spec:
         args:
         - "--metrics-addr=127.0.0.1:8080"
         - "--enable-leader-election"
+        - --atlas-domain=https://cloud.mongodb.com

config/dev/kustomization.yaml

@@ -0,0 +1,7 @@
+
+
+resources:
+- ../default
+
+patchesStrategicMerge:
+- manager_configuration.yaml

config/dev/manager_configuration.yaml

@@ -0,0 +1,15 @@
+# This patch configures the container with production configuration values
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    spec:
+      containers:
+        - name: manager
+          args:
+            - --atlas-domain=https://cloud-qa.mongodb.com
+            - --metrics-addr=127.0.0.1:8080 # is there any way to reuse the properties that are set by /default overlay?
+            - --enable-leader-election

config/manager/manager.yaml

@@ -22,6 +22,9 @@ spec:
       labels:
         control-plane: controller-manager
     spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 2000
       containers:
       - command:
         - /manager

main.go

@@ -47,13 +47,7 @@ func init() {
 }
 
 func main() {
-	var metricsAddr string
-	var enableLeaderElection bool
-	flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
-	flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
-		"Enable leader election for controller manager. "+
-			"Enabling this will ensure there is only one active controller manager.")
-	flag.Parse()
+	config := parseConfiguration()
 
 	// controller-runtime/pkg/log/zap is a wrapper over zap that implements logr
 	// logr looks quite limited in functionality so we better use Zap directly.
@@ -65,9 +59,9 @@ func main() {
 
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
 		Scheme:             scheme,
-		MetricsBindAddress: metricsAddr,
+		MetricsBindAddress: config.MetricsAddr,
 		Port:               9443,
-		LeaderElection:     enableLeaderElection,
+		LeaderElection:     config.EnableLeaderElection,
 		LeaderElectionID:   "06d035fb.mongodb.com",
 	})
 	if err != nil {
@@ -76,18 +70,20 @@ func main() {
 	}
 
 	if err = (&atlascluster.AtlasClusterReconciler{
-		Client: mgr.GetClient(),
-		Log:    logger.Named("controllers").Named("AtlasCluster").Sugar(),
-		Scheme: mgr.GetScheme(),
+		Client:      mgr.GetClient(),
+		Log:         logger.Named("controllers").Named("AtlasCluster").Sugar(),
+		Scheme:      mgr.GetScheme(),
+		AtlasDomain: config.AtlasDomain,
 	}).SetupWithManager(mgr); err != nil {
 		setupLog.Error(err, "unable to create controller", "controller", "AtlasCluster")
 		os.Exit(1)
 	}
 
 	if err = (&atlasproject.AtlasProjectReconciler{
-		Client: mgr.GetClient(),
-		Log:    logger.Named("controllers").Named("AtlasProject").Sugar(),
-		Scheme: mgr.GetScheme(),
+		Client:      mgr.GetClient(),
+		Log:         logger.Named("controllers").Named("AtlasProject").Sugar(),
+		Scheme:      mgr.GetScheme(),
+		AtlasDomain: config.AtlasDomain,
 	}).SetupWithManager(mgr); err != nil {
 		setupLog.Error(err, "unable to create controller", "controller", "AtlasProject")
 		os.Exit(1)
@@ -100,3 +96,22 @@ func main() {
 		os.Exit(1)
 	}
 }
+
+type Config struct {
+	AtlasDomain          string
+	EnableLeaderElection bool
+	MetricsAddr          string
+}
+
+// ParseConfiguration fills the 'OperatorConfig' from the flags passed to the program
+func parseConfiguration() Config {
+	config := Config{}
+	flag.StringVar(&config.AtlasDomain, "atlas-domain", "https://cloud.mongodb.com", "the Atlas URL domain name (no slash in the end).")
+	flag.StringVar(&config.MetricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
+	flag.BoolVar(&config.EnableLeaderElection, "enable-leader-election", false,
+		"Enable leader election for controller manager. "+
+			"Enabling this will ensure there is only one active controller manager.")
+
+	flag.Parse()
+	return config
+}

pkg/controller/atlas/client.go

@@ -15,16 +15,15 @@ var userAgent = fmt.Sprintf("%s/%s (%s;%s)", "MongoDBAtlasKubernetesOperator", "
 
 // Client is the central place to create a client for Atlas using specified API keys and a server URL.
 // Note, that the default HTTP transport is reused globally by Go so all caching, keep-alive etc will be in action.
-func Client(connection Connection, log *zap.SugaredLogger) (*mongodbatlas.Client, error) {
+func Client(atlasDomain string, connection Connection, log *zap.SugaredLogger) (*mongodbatlas.Client, error) {
 	withDigest := httputil.Digest(connection.PublicKey, connection.PrivateKey)
 	withLogging := httputil.LoggingTransport(log)
 
 	httpClient, err := httputil.DecorateClient(basicClient(), withDigest, withLogging)
 	if err != nil {
 		return nil, err
 	}
-	// TODO configuration for base URL (as a global Operator config?)
-	client, err := mongodbatlas.New(httpClient, mongodbatlas.SetBaseURL("https://cloud-qa.mongodb.com/api/atlas/v1.0/"))
+	client, err := mongodbatlas.New(httpClient, mongodbatlas.SetBaseURL(atlasDomain+"/api/atlas/v1.0/"))
 	if err != nil {
 		return nil, err
 	}

pkg/controller/atlascluster/atlascluster_controller.go

@@ -40,9 +40,10 @@ import (
 
 // AtlasClusterReconciler reconciles an AtlasCluster object
 type AtlasClusterReconciler struct {
-	Client client.Client
-	Log    *zap.SugaredLogger
-	Scheme *runtime.Scheme
+	Client      client.Client
+	Log         *zap.SugaredLogger
+	Scheme      *runtime.Scheme
+	AtlasDomain string
 }
 
 // +kubebuilder:rbac:groups=atlas.mongodb.com,resources=atlasclusters,verbs=get;list;watch;create;update;patch;delete
@@ -74,7 +75,7 @@ func (r *AtlasClusterReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error
 		return result.ReconcileResult(), nil
 	}
 
-	c, result := ensureClusterState(log, connection, project, cluster)
+	c, result := r.ensureClusterState(log, connection, project, cluster)
 	if c != nil && c.StateName != "" {
 		ctx.EnsureStatusOption(status.AtlasClusterStateNameOption(c.StateName))
 	}
@@ -135,7 +136,7 @@ func (r *AtlasClusterReconciler) Delete(obj runtime.Object) error {
 		return errors.New("cannot read Atlas connection")
 	}
 
-	atlasClient, err := atlas.Client(connection, log)
+	atlasClient, err := atlas.Client(r.AtlasDomain, connection, log)
 	if err != nil {
 		return fmt.Errorf("cannot build Atlas client: %w", err)
 	}

pkg/controller/atlascluster/cluster.go

@@ -15,10 +15,10 @@ import (
 	"go.uber.org/zap"
 )
 
-func ensureClusterState(log *zap.SugaredLogger, connection atlas.Connection, project *mdbv1.AtlasProject, cluster *mdbv1.AtlasCluster) (c *mongodbatlas.Cluster, _ workflow.Result) {
+func (r *AtlasClusterReconciler) ensureClusterState(log *zap.SugaredLogger, connection atlas.Connection, project *mdbv1.AtlasProject, cluster *mdbv1.AtlasCluster) (c *mongodbatlas.Cluster, _ workflow.Result) {
 	ctx := context.Background()
 
-	client, err := atlas.Client(connection, log)
+	client, err := atlas.Client(r.AtlasDomain, connection, log)
 	if err != nil {
 		return c, workflow.Terminate(workflow.Internal, err.Error())
 	}

pkg/controller/atlasproject/atlasproject_controller.go

@@ -33,8 +33,9 @@ import (
 // AtlasProjectReconciler reconciles a AtlasProject object
 type AtlasProjectReconciler struct {
 	client.Client
-	Log    *zap.SugaredLogger
-	Scheme *runtime.Scheme
+	Log         *zap.SugaredLogger
+	Scheme      *runtime.Scheme
+	AtlasDomain string
 }
 
 // +kubebuilder:rbac:groups=atlas.mongodb.com,resources=atlasprojects,verbs=get;list;watch;create;update;patch;delete
@@ -68,7 +69,7 @@ func (r *AtlasProjectReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error
 	}
 
 	var projectID string
-	if projectID, result = ensureProjectExists(ctx, connection, project); !result.IsOk() {
+	if projectID, result = r.ensureProjectExists(ctx, connection, project); !result.IsOk() {
 		ctx.SetConditionFromResult(status.ProjectReadyType, result)
 		return result.ReconcileResult(), nil
 	}