VMware vSphere Integrated Containers provider (#206)

* Add Virtual Kubelet provider for VIC

Initial virtual kubelet provider for VMware VIC.  This provider currently
handles creating and starting of a pod VM via the VIC portlayer and persona
server.  Image store handling via the VIC persona server.  This provider
currently requires the feature/wolfpack branch of VIC.

* Added pod stop and delete.  Also added node capacity.

Added the ability to stop and delete pod VMs via VIC.  Also retrieve
node capacity information from the VCH.

* Cleanup and readme file

Some file clean up and added a Readme.md markdown file for the VIC
provider.

* Cleaned up errors, added function comments, moved operation code

1. Cleaned up error handling.  Set standard for creating errors.
2. Added method prototype comments for all interface functions.
3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder.

* Add mocking code and unit tests for podcache, podcreator, and podstarter

Used the unit test framework used in VIC to handle assertions in the provider's
unit test.  Mocking code generated using OSS project mockery, which is compatible
with the testify assertion framework.

* Vendored packages for the VIC provider

Requires feature/wolfpack branch of VIC and a few specific commit sha of
projects used within VIC.

* Implementation of POD Stopper and Deleter unit tests (#4)

* Updated files for initial PR

vendor/github.com/vmware/vic/pkg/flags/optional_bool.go

@@ -0,0 +1,52 @@
+// Copyright 2017 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"strconv"
+)
+
+type optionalBool struct {
+	val **bool
+}
+
+func (b *optionalBool) Set(s string) error {
+	v, err := strconv.ParseBool(s)
+	*b.val = &v
+	return err
+}
+
+func (b *optionalBool) Get() interface{} {
+	if *b.val == nil {
+		return nil
+	}
+	return **b.val
+}
+
+func (b *optionalBool) String() string {
+	if b.val == nil || *b.val == nil {
+		return "<nil>"
+	}
+	return strconv.FormatBool(**b.val)
+}
+
+func (b *optionalBool) IsBoolFlag() bool { return true }
+
+// NewOptionalString returns a flag.Value implementation where there is no default value.
+// This avoids sending a default value over the wire as using flag.StringVar() would.
+func NewOptionalBool(b **bool) flag.Value {
+	return &optionalBool{b}
+}

vendor/github.com/vmware/vic/pkg/flags/optional_bool_test.go

@@ -0,0 +1,61 @@
+// Copyright 2017 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"testing"
+)
+
+func TestOptionalBool(t *testing.T) {
+	fs := flag.NewFlagSet("", flag.ContinueOnError)
+	var val *bool
+
+	fs.Var(NewOptionalBool(&val), "obool", "optional bool")
+
+	b := fs.Lookup("obool")
+
+	if b.DefValue != "<nil>" {
+		t.Fail()
+	}
+
+	if b.Value.String() != "<nil>" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != nil {
+		t.Fail()
+	}
+
+	b.Value.Set("true")
+
+	if b.Value.String() != "true" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != true {
+		t.Fail()
+	}
+
+	b.Value.Set("false")
+
+	if b.Value.String() != "false" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != false {
+		t.Fail()
+	}
+}

vendor/github.com/vmware/vic/pkg/flags/optional_int.go

@@ -0,0 +1,52 @@
+// Copyright 2017 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"strconv"
+)
+
+type optionalInt struct {
+	val **int
+}
+
+func (b *optionalInt) Set(s string) error {
+	v, err := strconv.Atoi(s)
+	*b.val = &v
+	return err
+}
+
+func (b *optionalInt) Get() interface{} {
+	if *b.val == nil {
+		return nil
+	}
+	return **b.val
+}
+
+func (b *optionalInt) String() string {
+	if b.val == nil || *b.val == nil {
+		return "<nil>"
+	}
+	return strconv.Itoa(**b.val)
+}
+
+func (b *optionalInt) IsBoolFlag() bool { return false }
+
+// NewOptionalString returns a flag.Value implementation where there is no default value.
+// This avoids sending a default value over the wire as using flag.StringVar() would.
+func NewOptionalInt(i **int) flag.Value {
+	return &optionalInt{i}
+}

vendor/github.com/vmware/vic/pkg/flags/optional_int_test.go

@@ -0,0 +1,51 @@
+// Copyright 2017 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"testing"
+)
+
+func TestOptionalInt(t *testing.T) {
+	fs := flag.NewFlagSet("", flag.ContinueOnError)
+	var val *int
+
+	fs.Var(NewOptionalInt(&val), "oint", "optional int")
+
+	b := fs.Lookup("oint")
+
+	if b.DefValue != "<nil>" {
+		t.Fail()
+	}
+
+	if b.Value.String() != "<nil>" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != nil {
+		t.Fail()
+	}
+
+	b.Value.Set("1")
+
+	if b.Value.String() != "1" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != 1 {
+		t.Fail()
+	}
+}

vendor/github.com/vmware/vic/pkg/flags/optional_string.go

@@ -0,0 +1,50 @@
+// Copyright 2016 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+)
+
+type optionalString struct {
+	val **string
+}
+
+func (b *optionalString) Set(s string) error {
+	*b.val = &s
+	return nil
+}
+
+func (b *optionalString) Get() interface{} {
+	if *b.val == nil {
+		return nil
+	}
+	return **b.val
+}
+
+func (b *optionalString) String() string {
+	if b.val == nil || *b.val == nil {
+		return "<nil>"
+	}
+	return **b.val
+}
+
+func (b *optionalString) IsBoolFlag() bool { return false }
+
+// NewOptionalString returns a flag.Value implementation where there is no default value.
+// This avoids sending a default value over the wire as using flag.StringVar() would.
+func NewOptionalString(s **string) flag.Value {
+	return &optionalString{s}
+}

vendor/github.com/vmware/vic/pkg/flags/optional_string_test.go

@@ -0,0 +1,51 @@
+// Copyright 2016 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"testing"
+)
+
+func TestOptionalString(t *testing.T) {
+	fs := flag.NewFlagSet("", flag.ContinueOnError)
+	var val *string
+
+	fs.Var(NewOptionalString(&val), "obool", "optional bool")
+
+	b := fs.Lookup("obool")
+
+	if b.DefValue != "<nil>" {
+		t.Fail()
+	}
+
+	if b.Value.String() != "<nil>" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != nil {
+		t.Fail()
+	}
+
+	b.Value.Set("test")
+
+	if b.Value.String() != "test" {
+		t.Fail()
+	}
+
+	if b.Value.(flag.Getter).Get() != "test" {
+		t.Fail()
+	}
+}

vendor/github.com/vmware/vic/pkg/flags/shares_flag.go

@@ -0,0 +1,64 @@
+// Copyright 2016 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/vmware/govmomi/vim25/types"
+)
+
+type ShareFlag struct {
+	shares **types.SharesInfo
+}
+
+func (s *ShareFlag) Set(val string) error {
+	if *s.shares == nil {
+		*s.shares = &types.SharesInfo{}
+	}
+	switch val = strings.ToLower(val); val {
+	case string(types.SharesLevelNormal), string(types.SharesLevelLow), string(types.SharesLevelHigh):
+		(*s.shares).Level = types.SharesLevel(val)
+		(*s.shares).Shares = 0
+	default:
+		n, err := strconv.Atoi(val)
+		if err != nil {
+			return err
+		}
+
+		(*s.shares).Level = types.SharesLevelCustom
+		(*s.shares).Shares = int32(n)
+	}
+
+	return nil
+}
+
+func (s *ShareFlag) String() string {
+	if s.shares == nil || *s.shares == nil {
+		return "<nil>"
+	}
+	switch (*s.shares).Level {
+	case types.SharesLevelCustom:
+		return fmt.Sprintf("%v", (*s.shares).Shares)
+	default:
+		return string((*s.shares).Level)
+	}
+}
+
+func NewSharesFlag(shares **types.SharesInfo) *ShareFlag {
+	return &ShareFlag{shares}
+}

vendor/github.com/vmware/vic/pkg/flags/shares_flag_test.go

@@ -0,0 +1,75 @@
+// Copyright 2016 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"strings"
+	"testing"
+
+	"github.com/vmware/govmomi/vim25/types"
+)
+
+func TestShareFlag(t *testing.T) {
+	fs := flag.NewFlagSet("", flag.ContinueOnError)
+	var val *types.SharesInfo
+
+	fs.Var(NewSharesFlag(&val), "shares", "memory shares")
+
+	u := fs.Lookup("shares")
+
+	if u.DefValue != "<nil>" {
+		t.Errorf("DefValue: %s", u.DefValue)
+	}
+
+	if u.Value.String() != "<nil>" {
+		t.Errorf("Value: %s", u.Value)
+	}
+
+	ref := "2000"
+	u.Value.Set(ref)
+
+	if u.Value.String() != strings.ToLower(ref) {
+		t.Errorf("Value after set: %q", u.Value)
+	}
+
+	if val == nil {
+		t.Errorf("val is not set")
+	}
+	if val.Level != types.SharesLevelCustom {
+		t.Errorf("shares level is not set correctly: %s", val.Level)
+	}
+	if val.Shares != 2000 {
+		t.Errorf("shares Share is not set correctly: %d", val.Shares)
+	}
+
+	ref = "HIGH"
+	u.Value.Set(ref)
+
+	if u.Value.String() != strings.ToLower(ref) {
+		t.Errorf("Value after set: %q", u.Value)
+	}
+
+	if val == nil {
+		t.Errorf("val is not set")
+	}
+	if val.Level != types.SharesLevelHigh {
+		t.Errorf("shares level is not set correctly: %s", val.Level)
+	}
+	if val.Shares != 0 {
+		t.Errorf("shares Share is not set correctly: %d", val.Shares)
+	}
+
+}

vendor/github.com/vmware/vic/pkg/flags/url_flag.go

@@ -0,0 +1,60 @@
+// Copyright 2016 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"net/url"
+	"regexp"
+)
+
+var schemeMatch = regexp.MustCompile(`^\w+://`)
+
+type URLFlag struct {
+	u **url.URL
+}
+
+// Set will add a protocol (https) if there isn't a :// match. This
+// ensures tha url.Parse can correctly extract user:password from
+// raw URLs such as user:password@hostname
+func (f *URLFlag) Set(s string) error {
+	var err error
+	// Default the scheme to https
+	if !schemeMatch.MatchString(s) {
+		s = "https://" + s
+	}
+
+	url, err := url.Parse(s)
+	*f.u = url
+	return err
+}
+
+func (f *URLFlag) Get() interface{} {
+	return *f.u
+}
+
+func (f *URLFlag) String() string {
+	if f.u == nil || *f.u == nil {
+		return "<nil>"
+	}
+	return (*f.u).String()
+}
+
+func (f *URLFlag) IsBoolFlag() bool { return false }
+
+// NewURLFlag returns a flag.Value.
+func NewURLFlag(u **url.URL) flag.Value {
+	return &URLFlag{u}
+}

vendor/github.com/vmware/vic/pkg/flags/url_flag_test.go

@@ -0,0 +1,60 @@
+// Copyright 2016 VMware, Inc. All Rights Reserved.
+//
+// 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 flags
+
+import (
+	"flag"
+	"net/url"
+	"testing"
+)
+
+func TestURLFlag(t *testing.T) {
+	fs := flag.NewFlagSet("", flag.ContinueOnError)
+	var val *url.URL
+
+	fs.Var(NewURLFlag(&val), "url", "url flag")
+
+	u := fs.Lookup("url")
+
+	if u.DefValue != "<nil>" {
+		t.Errorf("DefValue: %s", u.DefValue)
+	}
+
+	if u.Value.String() != "<nil>" {
+		t.Errorf("Value: %s", u.Value)
+	}
+
+	ref := "http://x:y@127.0.0.1"
+	u.Value.Set(ref)
+
+	if u.Value.String() != ref {
+		t.Errorf("Value after set: %s", u.Value)
+	}
+
+	if val == nil {
+		t.Errorf("val is not set")
+	}
+	if val.String() != ref {
+		t.Errorf("val is not set correctly: %s", val.String())
+	}
+
+	if val.User == nil {
+		t.Fatalf("Expected user info to be parsed from url")
+	}
+
+	if val.User.Username() != "x" {
+		t.Errorf("user was not extracted correctly")
+	}
+}