storage-operator: add stub PersistentVolume creation

storage-operator/deploy/crds/storage_v1alpha1_volume_cr.yaml

@@ -3,5 +3,4 @@ kind: Volume
 metadata:
   name: example-volume
 spec:
-  # Add fields here
-  size: 3
+  node: bootstrap

storage-operator/deploy/crds/storage_v1alpha1_volume_crd.yaml

@@ -28,6 +28,16 @@ spec:
         metadata:
           type: object
         spec:
+          properties:
+            nodeName:
+              description: Name of the node on which the volume is available
+              type: string
+            storageClassName:
+              description: Name of the storageClass that gets assigned to the volume
+              type: string
+          required:
+          - nodeName
+          - storageClassName
           type: object
         status:
           type: object

storage-operator/go.sum

@@ -35,7 +35,9 @@ github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1
 github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
 github.com/emicklei/go-restful v2.8.1+incompatible h1:AyDqLHbJ1quqbWr/OWDw+PlIP8ZFoTmYrGYaxzrLbNg=
 github.com/emicklei/go-restful v2.8.1+incompatible/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
+github.com/evanphx/json-patch v4.0.0+incompatible h1:xregGRMLBeuRcwiOTHRCsPPuzCQlqhxUPbqdw+zNkLc=
 github.com/evanphx/json-patch v4.0.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
+github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -74,6 +76,7 @@ github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c h1:964Od4U6p2jUkFxvCydnIczKteheJEzHRToSGK3Bnlw=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
+github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf h1:+RRA9JqSOZFfKrOeqr2z77+8R2RKyh8PG66dcu1V0ck=
 github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf/go.mod h1:HP5RmnzzSNb993RKQDq4+1A4ia9nllfqcQFTQJedwGI=
@@ -92,6 +95,7 @@ github.com/grpc-ecosystem/grpc-gateway v1.8.5 h1:2+KSC78XiO6Qy0hIjfc1OD9H+hsaJdJ
 github.com/grpc-ecosystem/grpc-gateway v1.8.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCOH9wdo=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/imdario/mergo v0.3.6 h1:xTNEAn+kxVO7dTZGu0CegyqKZmoWFI0rF8UxjlB2d28=
 github.com/imdario/mergo v0.3.6/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
@@ -105,9 +109,11 @@ github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvW
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.4/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329 h1:2gxZ0XQIU/5z3Z3bUBu+FXuk2pFbkN6tcwi/pjyaDic=
 github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
@@ -121,7 +127,9 @@ github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/ginkgo v1.7.0 h1:WSHQ+IS43OoUrWtD1/bbclrwK8TTH5hzp+umCiuxHgs=
 github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/gomega v1.4.3 h1:RE1xgDvH7imwFD45h+u2SgIfERHlS2yNG4DObb5BSKU=
 github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/openzipkin/zipkin-go v0.1.3/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
 github.com/openzipkin/zipkin-go v0.1.6/go.mod h1:QgAqvLzwWbR/WpD4A3cGpPtJrZXNIiJc5AZX7/PBEpw=
@@ -135,6 +143,7 @@ github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829 h1:D+CiwcpGTW6pL6bv6KI3KbyEyCKyS+1JWS2h8PNDnGA=
@@ -152,7 +161,6 @@ github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6So
 github.com/rogpeppe/go-internal v1.1.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.2.2 h1:J7U/N7eRtzjhs26d6GqMh2HBuXP8/Z64Densiiieafo=
 github.com/rogpeppe/go-internal v1.2.2/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/scality/metalk8s v0.0.0-20190529070749-28eb23447f4b h1:CYnX8hV/u/XQ1iEsfjamcZCX6itt8GUFtaj8YyoWvPU=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/spf13/afero v1.2.2 h1:5jhuqJyZCZf2JRofRvN/nIFgIWNzPa3/Vz8mYylgbWc=
 github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
@@ -162,6 +170,7 @@ github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnIn
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 go.opencensus.io v0.19.1/go.mod h1:gug0GbSHa8Pafr0d2urOSgoXHZ6x/RUlaiT0d9pqb4A=
 go.opencensus.io v0.19.2 h1:ZZpq6xI6kv/LuE/5s5UQvBU5vMjvRnPb8PvJrIntAnc=
@@ -244,12 +253,15 @@ google.golang.org/grpc v1.19.1 h1:TrBcJ1yqAl1G++wO39nD/qtgpsW9/1+QGrluyMGEYgM=
 google.golang.org/grpc v1.19.1/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -278,6 +290,7 @@ sigs.k8s.io/controller-runtime v0.1.10 h1:amLOmcekVdnsD1uIpmgRqfTbQWJ2qxvQkcdeFh
 sigs.k8s.io/controller-runtime v0.1.10/go.mod h1:HFAYoOh6XMV+jKF1UjFwrknPbowfyHEHHRdJMf2jMX8=
 sigs.k8s.io/controller-tools v0.1.11-0.20190411181648-9d55346c2bde h1:ZkaHf5rNYzIB6CB82keKMQNv7xxkqT0ylOBdfJPfi+k=
 sigs.k8s.io/controller-tools v0.1.11-0.20190411181648-9d55346c2bde/go.mod h1:ATWLRP3WGxuAN9HcT2LaKHReXIH+EZGzRuMHuxjXfhQ=
+sigs.k8s.io/testing_frameworks v0.1.0 h1:2hBE1sDhKWALoqvhi2i/mnQOFZVfWtQFtsfH0QBTI0U=
 sigs.k8s.io/testing_frameworks v0.1.0/go.mod h1:VVBKrHmJ6Ekkfz284YKhQePcdycOzNH9qL6ht1zEr/U=
 sigs.k8s.io/yaml v1.1.0 h1:4A07+ZFc2wgJwo8YNlQpr1rVlgUDlxXHhPJciaPY5gs=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

storage-operator/pkg/apis/storage/v1alpha1/volume_types.go

@@ -2,6 +2,7 @@ package v1alpha1
 
 import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
 )
 
 // EDIT THIS FILE!  THIS IS SCAFFOLDING FOR YOU TO OWN!
@@ -13,6 +14,12 @@ type VolumeSpec struct {
 	// INSERT ADDITIONAL SPEC FIELDS - desired state of cluster
 	// Important: Run "operator-sdk generate k8s" to regenerate code after modifying this file
 	// Add custom validation using kubebuilder tags: https://book.kubebuilder.io/beyond_basics/generating_crd.html
+
+	// Name of the node on which the volume is available
+	NodeName types.NodeName `json:"nodeName"`
+
+	// Name of the storageClass that gets assigned to the volume
+	StorageClassName string `json:"storageClassName"`
 }
 
 // VolumeStatus defines the observed state of Volume

storage-operator/pkg/controller/volume/volume_controller.go

@@ -6,9 +6,13 @@ import (
 	storagev1alpha1 "github.com/scality/metalk8s/storage-operator/pkg/apis/storage/v1alpha1"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/controller"
+	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 	"sigs.k8s.io/controller-runtime/pkg/handler"
 	"sigs.k8s.io/controller-runtime/pkg/manager"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
@@ -91,11 +95,92 @@ func (r *ReconcileVolume) Reconcile(request reconcile.Request) (reconcile.Result
 			// 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
+                        // TODO Remove the finalizer from the generated PV, if exists
 			return reconcile.Result{}, nil
 		}
 		// Error reading the object - requeue the request.
 		return reconcile.Result{}, err
 	}
 
+	pv := newPersistentVolumeForCR(instance)
+
+	// Set Volume instance as the owner and controller
+	if err := controllerutil.SetControllerReference(instance, pv, r.scheme); err != nil {
+		return reconcile.Result{}, err
+	}
+
+	// Check if this PV already exists
+	found := &corev1.PersistentVolume{}
+	err = r.client.Get(context.TODO(), types.NamespacedName{Namespace: "", Name: pv.Name}, found)
+	if err != nil && errors.IsNotFound(err) {
+		reqLogger.Info("Creating a new PersistentVolume", "PersistentVolume.Name", pv.Name)
+		err = r.client.Create(context.TODO(), pv)
+		if err != nil {
+			return reconcile.Result{}, err
+		}
+
+		// PV created successfully - don't requeue
+		return reconcile.Result{}, nil
+	} else if err != nil {
+		return reconcile.Result{}, err
+	}
+
+	// PV already exists - don't requeue
+	reqLogger.Info("Skip reconcile: PersistentVolume already exists", "PersistentVolume.Name", found.Name)
+
 	return reconcile.Result{}, nil
 }
+
+func newPersistentVolumeForCR(cr *storagev1alpha1.Volume) *corev1.PersistentVolume {
+	return &corev1.PersistentVolume{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:   cr.Name,
+                        Labels: map[string]string{},
+                        Finalizers: []string{
+                                "storage.metalk8s.scality.com/volume-protection",
+                        },
+		},
+		Spec: corev1.PersistentVolumeSpec{
+			AccessModes: []corev1.PersistentVolumeAccessMode{corev1.ReadWriteOnce},
+			Capacity: map[corev1.ResourceName]resource.Quantity{
+				corev1.ResourceStorage: resource.MustParse("1Gi"),
+			},
+			PersistentVolumeSource: corev1.PersistentVolumeSource{
+				Local: &corev1.LocalVolumeSource{
+					Path: "/tmp/foo",
+				},
+			},
+			PersistentVolumeReclaimPolicy: "Retain",
+			StorageClassName:              cr.Spec.StorageClassName,
+                        NodeAffinity:                  nodeAffinity(cr.Spec.NodeName),
+		},
+	}
+}
+
+func nodeAffinity(node types.NodeName) *corev1.VolumeNodeAffinity {
+	selector := corev1.NodeSelector{
+		NodeSelectorTerms: []corev1.NodeSelectorTerm{
+			{
+                                MatchExpressions: []corev1.NodeSelectorRequirement{
+                                        {
+                                                Key: "kubernetes.io/hostname",
+                                                Operator: corev1.NodeSelectorOpIn,
+                                                Values: []string{string(node)},
+                                        },
+                                },
+				MatchFields: []corev1.NodeSelectorRequirement{
+					{
+						Key:      "metadata.name",
+						Operator: corev1.NodeSelectorOpIn,
+						Values:   []string{string(node)},
+					},
+				},
+			},
+		},
+	}
+	affinity := corev1.VolumeNodeAffinity{
+		Required: &selector,
+	}
+	return &affinity
+
+}