vSphere: Minimize property collection via Finder

The 'All' parameter of the 'NewFinder' function controls property collection while searching the inventory.
When 'All' is set to 'false', Finder collects the minimal set of object properties required to search inventory.
When 'All' is set to 'true', Finder collects *all* object properties, which are *not* required to search inventory.
Setting 'All' to 'true' is only useful when inspecting all properties of an object,
such as by certain govc commands when the '-json' or '-dump' flags are specified.

Changing All=false in VCP minimizes the SOAP payload size and marshalling required on both sides, without impacting any functionality.

pkg/cloudprovider/providers/vsphere/vclib/datacenter.go

@@ -39,7 +39,7 @@ type Datacenter struct {
 // GetDatacenter returns the DataCenter Object for the given datacenterPath
 // If datacenter is located in a folder, include full path to datacenter else just provide the datacenter name
 func GetDatacenter(ctx context.Context, connection *VSphereConnection, datacenterPath string) (*Datacenter, error) {
-	finder := find.NewFinder(connection.GoVmomiClient.Client, true)
+	finder := find.NewFinder(connection.GoVmomiClient.Client, false)
 	datacenter, err := finder.Datacenter(ctx, datacenterPath)
 	if err != nil {
 		glog.Errorf("Failed to find the datacenter: %s. err: %+v", datacenterPath, err)
@@ -52,7 +52,7 @@ func GetDatacenter(ctx context.Context, connection *VSphereConnection, datacente
 // GetAllDatacenter returns all the DataCenter Objects
 func GetAllDatacenter(ctx context.Context, connection *VSphereConnection) ([]*Datacenter, error) {
 	var dc []*Datacenter
-	finder := find.NewFinder(connection.GoVmomiClient.Client, true)
+	finder := find.NewFinder(connection.GoVmomiClient.Client, false)
 	datacenters, err := finder.DatacenterList(ctx, "*")
 	if err != nil {
 		glog.Errorf("Failed to find the datacenter. err: %+v", err)

pkg/cloudprovider/providers/vsphere/vclib/utils.go

@@ -46,7 +46,7 @@ func IsNotFound(err error) bool {
 }
 
 func getFinder(dc *Datacenter) *find.Finder {
-	finder := find.NewFinder(dc.Client(), true)
+	finder := find.NewFinder(dc.Client(), false)
 	finder.SetDatacenter(dc.Datacenter)
 	return finder
 }

pkg/cloudprovider/providers/vsphere/vclib/utils_test.go

@@ -0,0 +1,71 @@
+/*
+Copyright 2018 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 vclib
+
+import (
+	"context"
+	"testing"
+
+	"github.com/vmware/govmomi"
+	"github.com/vmware/govmomi/simulator"
+)
+
+func TestUtils(t *testing.T) {
+	ctx := context.Background()
+
+	model := simulator.VPX()
+	// Child folder "F0" will be created under the root folder and datacenter folders,
+	// and all resources are created within the "F0" child folders.
+	model.Folder = 1
+
+	defer model.Remove()
+	err := model.Create()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s := model.Service.NewServer()
+	defer s.Close()
+
+	c, err := govmomi.NewClient(ctx, s.URL, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	vc := &VSphereConnection{GoVmomiClient: c}
+
+	dc, err := GetDatacenter(ctx, vc, testDefaultDatacenter)
+	if err != nil {
+		t.Error(err)
+	}
+
+	finder := getFinder(dc)
+	datastores, err := finder.DatastoreList(ctx, "*")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	count := model.Count()
+	if count.Datastore != len(datastores) {
+		t.Errorf("got %d Datastores, expected: %d", len(datastores), count.Datastore)
+	}
+
+	_, err = finder.Datastore(ctx, testNameNotFound)
+	if !IsNotFound(err) {
+		t.Errorf("unexpected error: %s", err)
+	}
+}

test/e2e/storage/vsphere/vsphere.go

@@ -18,6 +18,11 @@ package vsphere
 
 import (
 	"fmt"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
 	"github.com/vmware/govmomi"
 	"github.com/vmware/govmomi/find"
 	"github.com/vmware/govmomi/object"
@@ -25,10 +30,6 @@ import (
 	"github.com/vmware/govmomi/vim25/types"
 	"golang.org/x/net/context"
 	"k8s.io/kubernetes/test/e2e/framework"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"time"
 )
 
 const (
@@ -57,7 +58,7 @@ type VolumeOptions struct {
 // GetDatacenter returns the DataCenter Object for the given datacenterPath
 func (vs *VSphere) GetDatacenter(ctx context.Context, datacenterPath string) (*object.Datacenter, error) {
 	Connect(ctx, vs)
-	finder := find.NewFinder(vs.Client.Client, true)
+	finder := find.NewFinder(vs.Client.Client, false)
 	return finder.Datacenter(ctx, datacenterPath)
 }
 
@@ -70,7 +71,7 @@ func (vs *VSphere) GetDatacenterFromObjectReference(ctx context.Context, dc obje
 // GetAllDatacenter returns all the DataCenter Objects
 func (vs *VSphere) GetAllDatacenter(ctx context.Context) ([]*object.Datacenter, error) {
 	Connect(ctx, vs)
-	finder := find.NewFinder(vs.Client.Client, true)
+	finder := find.NewFinder(vs.Client.Client, false)
 	return finder.DatacenterList(ctx, "*")
 }
 
@@ -88,7 +89,7 @@ func (vs *VSphere) GetVMByUUID(ctx context.Context, vmUUID string, dc object.Ref
 func (vs *VSphere) GetFolderByPath(ctx context.Context, dc object.Reference, folderPath string) (vmFolderMor types.ManagedObjectReference, err error) {
 	Connect(ctx, vs)
 	datacenter := object.NewDatacenter(vs.Client.Client, dc.Reference())
-	finder := find.NewFinder(datacenter.Client(), true)
+	finder := find.NewFinder(datacenter.Client(), false)
 	finder.SetDatacenter(datacenter)
 	vmFolder, err := finder.Folder(ctx, folderPath)
 	if err != nil {
@@ -113,7 +114,7 @@ func (vs *VSphere) CreateVolume(volumeOptions *VolumeOptions, dataCenterRef type
 		return "", fmt.Errorf("datacenter is nil")
 	}
 	vs.initVolumeOptions(volumeOptions)
-	finder := find.NewFinder(datacenter.Client(), true)
+	finder := find.NewFinder(datacenter.Client(), false)
 	finder.SetDatacenter(datacenter)
 	ds, err := finder.Datastore(ctx, volumeOptions.Datastore)
 	if err != nil {

test/e2e/storage/vsphere/vsphere_utils.go

@@ -41,10 +41,11 @@ import (
 	"k8s.io/kubernetes/test/e2e/framework"
 	"k8s.io/kubernetes/test/e2e/storage/utils"
 
-	"github.com/vmware/govmomi/find"
-	vimtypes "github.com/vmware/govmomi/vim25/types"
 	"regexp"
 	"strings"
+
+	"github.com/vmware/govmomi/find"
+	vimtypes "github.com/vmware/govmomi/vim25/types"
 )
 
 const (
@@ -657,7 +658,7 @@ func registerNodeVM(nodeName, workingDir, vmxFilePath string, rpool *object.Reso
 	framework.Logf("Registering node VM %s with vmx file path %s", nodeName, vmxFilePath)
 
 	nodeInfo := TestContext.NodeMapper.GetNodeInfo(nodeName)
-	finder := find.NewFinder(nodeInfo.VSphere.Client.Client, true)
+	finder := find.NewFinder(nodeInfo.VSphere.Client.Client, false)
 
 	vmFolder, err := finder.FolderOrDefault(ctx, workingDir)
 	Expect(err).NotTo(HaveOccurred())