fix pkg/controller/volume/expand/pvc_populator.go

pkg/controller/volume/expand/BUILD

@@ -4,16 +4,12 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
-    srcs = [
-        "expand_controller.go",
-        "pvc_populator.go",
-    ],
+    srcs = ["expand_controller.go"],
     importpath = "k8s.io/kubernetes/pkg/controller/volume/expand",
     deps = [
         "//pkg/apis/core/v1/helper:go_default_library",
         "//pkg/controller:go_default_library",
         "//pkg/controller/volume/events:go_default_library",
-        "//pkg/controller/volume/expand/cache:go_default_library",
         "//pkg/util/mount:go_default_library",
         "//pkg/volume:go_default_library",
         "//pkg/volume/util:go_default_library",
@@ -23,7 +19,6 @@ go_library(
         "//staging/src/k8s.io/api/authentication/v1:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/errors:go_default_library",
-        "//staging/src/k8s.io/apimachinery/pkg/labels:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/types:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/wait:go_default_library",

pkg/controller/volume/expand/expand_controller.go

@@ -95,6 +95,7 @@ type expandController struct {
 	queue workqueue.RateLimitingInterface
 }
 
+// NewExpandController expands the pvs
 func NewExpandController(
 	kubeClient clientset.Interface,
 	pvcInformer coreinformers.PersistentVolumeClaimInformer,

pkg/controller/volume/expand/pvc_populator.go

@@ -1,125 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package reconciler implements interfaces that attempt to reconcile the
-// desired state of the with the actual state of the world by triggering
-// actions.
-
-package expand
-
-import (
-	"fmt"
-	"time"
-
-	"k8s.io/klog"
-
-	"k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/labels"
-	"k8s.io/apimachinery/pkg/util/wait"
-	clientset "k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/kubernetes/scheme"
-	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
-	corelisters "k8s.io/client-go/listers/core/v1"
-	"k8s.io/client-go/tools/record"
-	"k8s.io/kubernetes/pkg/controller/volume/events"
-	"k8s.io/kubernetes/pkg/controller/volume/expand/cache"
-	"k8s.io/kubernetes/pkg/volume"
-	"k8s.io/kubernetes/pkg/volume/util"
-)
-
-// PVCPopulator iterates through PVCs and checks if for bound PVCs
-// their size doesn't match with Persistent Volume size
-type PVCPopulator interface {
-	Run(stopCh <-chan struct{})
-}
-
-type pvcPopulator struct {
-	loopPeriod      time.Duration
-	resizeMap       cache.VolumeResizeMap
-	pvcLister       corelisters.PersistentVolumeClaimLister
-	pvLister        corelisters.PersistentVolumeLister
-	kubeClient      clientset.Interface
-	volumePluginMgr *volume.VolumePluginMgr
-	recorder        record.EventRecorder
-}
-
-func NewPVCPopulator(
-	loopPeriod time.Duration,
-	resizeMap cache.VolumeResizeMap,
-	pvcLister corelisters.PersistentVolumeClaimLister,
-	pvLister corelisters.PersistentVolumeLister,
-	volumePluginMgr *volume.VolumePluginMgr,
-	kubeClient clientset.Interface) PVCPopulator {
-	populator := &pvcPopulator{
-		loopPeriod:      loopPeriod,
-		pvcLister:       pvcLister,
-		pvLister:        pvLister,
-		resizeMap:       resizeMap,
-		volumePluginMgr: volumePluginMgr,
-		kubeClient:      kubeClient,
-	}
-	eventBroadcaster := record.NewBroadcaster()
-	eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: kubeClient.CoreV1().Events("")})
-	populator.recorder = eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "volume_expand"})
-	return populator
-}
-
-func (populator *pvcPopulator) Run(stopCh <-chan struct{}) {
-	wait.Until(populator.Sync, populator.loopPeriod, stopCh)
-}
-
-func (populator *pvcPopulator) Sync() {
-	pvcs, err := populator.pvcLister.List(labels.Everything())
-	if err != nil {
-		klog.Errorf("Listing PVCs failed in populator : %v", err)
-		return
-	}
-
-	for _, pvc := range pvcs {
-		pv, err := getPersistentVolume(pvc, populator.pvLister)
-
-		if err != nil {
-			klog.V(5).Infof("Error getting persistent volume for PVC %q : %v", pvc.UID, err)
-			continue
-		}
-
-		// Filter PVCs for which the corresponding volume plugins don't allow expansion.
-		pvcSize := pvc.Spec.Resources.Requests[v1.ResourceStorage]
-		pvcStatusSize := pvc.Status.Capacity[v1.ResourceStorage]
-		volumeSpec := volume.NewSpecFromPersistentVolume(pv, false)
-		volumePlugin, err := populator.volumePluginMgr.FindExpandablePluginBySpec(volumeSpec)
-		if (err != nil || volumePlugin == nil) && pvcStatusSize.Cmp(pvcSize) < 0 {
-			retErr := fmt.Errorf("didn't find a plugin capable of expanding the volume; " +
-				"waiting for an external controller to process this PVC")
-			eventType := v1.EventTypeNormal
-			if err != nil {
-				eventType = v1.EventTypeWarning
-			}
-			populator.recorder.Event(pvc, eventType, events.ExternalExpanding,
-				fmt.Sprintf("Ignoring the PVC: %v.", retErr))
-			klog.V(3).Infof("Ignoring the PVC %q (uid: %q) : %v.",
-				util.GetPersistentVolumeClaimQualifiedName(pvc), pvc.UID, retErr)
-			continue
-		}
-
-		// We are only going to add PVCs which are:
-		//  - bound
-		//  - pvc.Spec.Size > pvc.Status.Size
-		// These 2 checks are already performed in AddPVCUpdate function before adding pvc for resize
-		// and hence we do not repeat those checks here.
-		populator.resizeMap.AddPVCUpdate(pvc, pv)
-	}
-}