vendor files

vendor/k8s.io/kubernetes/cmd/kubeadm/app/features/BUILD

@@ -0,0 +1,38 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["features.go"],
+    importpath = "k8s.io/kubernetes/cmd/kubeadm/app/features",
+    deps = [
+        "//pkg/util/version:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/util/feature:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["features_test.go"],
+    importpath = "k8s.io/kubernetes/cmd/kubeadm/app/features",
+    library = ":go_default_library",
+    deps = ["//vendor/k8s.io/apiserver/pkg/util/feature:go_default_library"],
+)

vendor/k8s.io/kubernetes/cmd/kubeadm/app/features/features.go

@@ -0,0 +1,178 @@
+/*
+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 features
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	"k8s.io/kubernetes/pkg/util/version"
+)
+
+const (
+	// HighAvailability is alpha in v1.9
+	HighAvailability = "HighAvailability"
+
+	// CoreDNS is alpha in v1.9
+	CoreDNS = "CoreDNS"
+
+	// SelfHosting is alpha in v1.8 and v1.9
+	SelfHosting = "SelfHosting"
+
+	// StoreCertsInSecrets is alpha in v1.8 and v1.9
+	StoreCertsInSecrets = "StoreCertsInSecrets"
+
+	// DynamicKubeletConfig is alpha in v1.9
+	DynamicKubeletConfig = "DynamicKubeletConfig"
+)
+
+var v190 = version.MustParseSemantic("v1.9.0-alpha.1")
+
+// InitFeatureGates are the default feature gates for the init command
+var InitFeatureGates = FeatureList{
+	SelfHosting:         {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}},
+	StoreCertsInSecrets: {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}},
+	// We don't want to advertise this feature gate exists in v1.9 to avoid confusion as it is not yet working
+	HighAvailability:     {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}, MinimumVersion: v190, HiddenInHelpText: true},
+	CoreDNS:              {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}, MinimumVersion: v190},
+	DynamicKubeletConfig: {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}, MinimumVersion: v190},
+}
+
+// Feature represents a feature being gated
+type Feature struct {
+	utilfeature.FeatureSpec
+	MinimumVersion   *version.Version
+	HiddenInHelpText bool
+}
+
+// FeatureList represents a list of feature gates
+type FeatureList map[string]Feature
+
+// ValidateVersion ensures that a feature gate list is compatible with the chosen kubernetes version
+func ValidateVersion(allFeatures FeatureList, requestedFeatures map[string]bool, requestedVersion string) error {
+	if requestedVersion == "" {
+		return nil
+	}
+	parsedExpVersion, err := version.ParseSemantic(requestedVersion)
+	if err != nil {
+		return fmt.Errorf("Error parsing version %s: %v", requestedVersion, err)
+	}
+	for k := range requestedFeatures {
+		if minVersion := allFeatures[k].MinimumVersion; minVersion != nil {
+			if !parsedExpVersion.AtLeast(minVersion) {
+				return fmt.Errorf(
+					"the requested kubernetes version (%s) is incompatible with the %s feature gate, which needs %s as a minimum",
+					requestedVersion, k, minVersion)
+			}
+		}
+	}
+	return nil
+}
+
+// Enabled indicates whether a feature name has been enabled
+func Enabled(featureList map[string]bool, featureName string) bool {
+	return featureList[string(featureName)]
+}
+
+// Supports indicates whether a feature name is supported on the given
+// feature set
+func Supports(featureList FeatureList, featureName string) bool {
+	for k := range featureList {
+		if featureName == string(k) {
+			return true
+		}
+	}
+	return false
+}
+
+// Keys returns a slice of feature names for a given feature set
+func Keys(featureList FeatureList) []string {
+	var list []string
+	for k := range featureList {
+		list = append(list, string(k))
+	}
+	return list
+}
+
+// KnownFeatures returns a slice of strings describing the FeatureList features.
+func KnownFeatures(f *FeatureList) []string {
+	var known []string
+	for k, v := range *f {
+		if v.HiddenInHelpText {
+			continue
+		}
+
+		pre := ""
+		if v.PreRelease != utilfeature.GA {
+			pre = fmt.Sprintf("%s - ", v.PreRelease)
+		}
+		known = append(known, fmt.Sprintf("%s=true|false (%sdefault=%t)", k, pre, v.Default))
+	}
+	sort.Strings(known)
+	return known
+}
+
+// NewFeatureGate parses a string of the form "key1=value1,key2=value2,..." into a
+// map[string]bool of known keys or returns an error.
+func NewFeatureGate(f *FeatureList, value string) (map[string]bool, error) {
+	featureGate := map[string]bool{}
+	for _, s := range strings.Split(value, ",") {
+		if len(s) == 0 {
+			continue
+		}
+
+		arr := strings.SplitN(s, "=", 2)
+		if len(arr) != 2 {
+			return nil, fmt.Errorf("missing bool value for feature-gate key:%s", s)
+		}
+
+		k := strings.TrimSpace(arr[0])
+		v := strings.TrimSpace(arr[1])
+
+		if !Supports(*f, k) {
+			return nil, fmt.Errorf("unrecognized feature-gate key: %s", k)
+		}
+
+		boolValue, err := strconv.ParseBool(v)
+		if err != nil {
+			return nil, fmt.Errorf("invalid value %v for feature-gate key: %s, use true|false instead", v, k)
+		}
+		featureGate[k] = boolValue
+	}
+
+	ResolveFeatureGateDependencies(featureGate)
+
+	return featureGate, nil
+}
+
+// ResolveFeatureGateDependencies resolve dependencies between feature gates
+func ResolveFeatureGateDependencies(featureGate map[string]bool) {
+
+	// if StoreCertsInSecrets enabled, SelfHosting should enabled
+	if Enabled(featureGate, StoreCertsInSecrets) {
+		featureGate[SelfHosting] = true
+	}
+
+	// if HighAvailability enabled, both StoreCertsInSecrets and SelfHosting should enabled
+	if Enabled(featureGate, HighAvailability) && !Enabled(featureGate, StoreCertsInSecrets) {
+		featureGate[SelfHosting] = true
+		featureGate[StoreCertsInSecrets] = true
+	}
+}

vendor/k8s.io/kubernetes/cmd/kubeadm/app/features/features_test.go

@@ -0,0 +1,191 @@
+/*
+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 features
+
+import (
+	"reflect"
+	"testing"
+
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+)
+
+func TestKnownFeatures(t *testing.T) {
+	var someFeatures = FeatureList{
+		"feature2": {FeatureSpec: utilfeature.FeatureSpec{Default: true, PreRelease: utilfeature.Alpha}},
+		"feature1": {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Beta}},
+		"feature3": {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.GA}},
+	}
+
+	r := KnownFeatures(&someFeatures)
+
+	if len(r) != 3 {
+		t.Errorf("KnownFeatures returned %d values, expected 3", len(r))
+	}
+
+	// check the first value is feature1 (the list should be sorted); prerelease and default should be present
+	f1 := "feature1=true|false (BETA - default=false)"
+	if r[0] != f1 {
+		t.Errorf("KnownFeatures returned %s values, expected %s", r[0], f1)
+	}
+	// check the second value is feature2; prerelease and default should be present
+	f2 := "feature2=true|false (ALPHA - default=true)"
+	if r[1] != f2 {
+		t.Errorf("KnownFeatures returned %s values, expected %s", r[1], f2)
+	}
+	// check the second value is feature3; prerelease should not shown fo GA features; default should be present
+	f3 := "feature3=true|false (default=false)"
+	if r[2] != f3 {
+		t.Errorf("KnownFeatures returned %s values, expected %s", r[2], f3)
+	}
+}
+
+func TestNewFeatureGate(t *testing.T) {
+	var someFeatures = FeatureList{
+		"feature1": {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Beta}},
+		"feature2": {FeatureSpec: utilfeature.FeatureSpec{Default: true, PreRelease: utilfeature.Alpha}},
+	}
+
+	var tests = []struct {
+		value                string
+		expectedError        bool
+		expectedFeaturesGate map[string]bool
+	}{
+		{ //invalid value (missing =)
+			value:         "invalidValue",
+			expectedError: true,
+		},
+		{ //invalid value (missing =)
+			value:         "feature1=true,invalidValue",
+			expectedError: true,
+		},
+		{ //invalid value (not a boolean)
+			value:         "feature1=notABoolean",
+			expectedError: true,
+		},
+		{ //invalid value (not a boolean)
+			value:         "feature1=true,feature2=notABoolean",
+			expectedError: true,
+		},
+		{ //unrecognized feature-gate key
+			value:         "unknownFeature=false",
+			expectedError: true,
+		},
+		{ //unrecognized feature-gate key
+			value:         "feature1=true,unknownFeature=false",
+			expectedError: true,
+		},
+		{ //one feature
+			value:                "feature1=true",
+			expectedError:        false,
+			expectedFeaturesGate: map[string]bool{"feature1": true},
+		},
+		{ //two features
+			value:                "feature1=true,feature2=false",
+			expectedError:        false,
+			expectedFeaturesGate: map[string]bool{"feature1": true, "feature2": false},
+		},
+	}
+
+	for _, test := range tests {
+
+		r, err := NewFeatureGate(&someFeatures, test.value)
+
+		if !test.expectedError && err != nil {
+			t.Errorf("NewFeatureGate failed when not expected: %v", err)
+			continue
+		} else if test.expectedError && err == nil {
+			t.Error("NewFeatureGate didn't failed when expected")
+			continue
+		}
+
+		if !reflect.DeepEqual(r, test.expectedFeaturesGate) {
+			t.Errorf("NewFeatureGate returned a unexpected value")
+		}
+	}
+}
+
+func TestValidateVersion(t *testing.T) {
+	var someFeatures = FeatureList{
+		"feature1": {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Beta}},
+		"feature2": {FeatureSpec: utilfeature.FeatureSpec{Default: true, PreRelease: utilfeature.Alpha}, MinimumVersion: v190},
+	}
+
+	var tests = []struct {
+		requestedVersion  string
+		requestedFeatures map[string]bool
+		expectedError     bool
+	}{
+		{ //no min version
+			requestedFeatures: map[string]bool{"feature1": true},
+			expectedError:     false,
+		},
+		{ //min version but correct value given
+			requestedFeatures: map[string]bool{"feature2": true},
+			requestedVersion:  "v1.9.0",
+			expectedError:     false,
+		},
+		{ //min version and incorrect value given
+			requestedFeatures: map[string]bool{"feature2": true},
+			requestedVersion:  "v1.8.2",
+			expectedError:     true,
+		},
+	}
+
+	for _, test := range tests {
+		err := ValidateVersion(someFeatures, test.requestedFeatures, test.requestedVersion)
+		if !test.expectedError && err != nil {
+			t.Errorf("ValidateVersion failed when not expected: %v", err)
+			continue
+		} else if test.expectedError && err == nil {
+			t.Error("ValidateVersion didn't failed when expected")
+			continue
+		}
+	}
+}
+
+func TestResolveFeatureGateDependencies(t *testing.T) {
+
+	var tests = []struct {
+		inputFeatures    map[string]bool
+		expectedFeatures map[string]bool
+	}{
+		{ // no flags
+			inputFeatures:    map[string]bool{},
+			expectedFeatures: map[string]bool{},
+		},
+		{ // others flags
+			inputFeatures:    map[string]bool{"SupportIPVSProxyMode": true},
+			expectedFeatures: map[string]bool{"SupportIPVSProxyMode": true},
+		},
+		{ // just StoreCertsInSecrets flags
+			inputFeatures:    map[string]bool{"StoreCertsInSecrets": true},
+			expectedFeatures: map[string]bool{"StoreCertsInSecrets": true, "SelfHosting": true},
+		},
+		{ // just HighAvailability flags
+			inputFeatures:    map[string]bool{"HighAvailability": true},
+			expectedFeatures: map[string]bool{"HighAvailability": true, "StoreCertsInSecrets": true, "SelfHosting": true},
+		},
+	}
+
+	for _, test := range tests {
+		ResolveFeatureGateDependencies(test.inputFeatures)
+		if !reflect.DeepEqual(test.inputFeatures, test.expectedFeatures) {
+			t.Errorf("ResolveFeatureGateDependencies failed, expected: %v, got: %v", test.inputFeatures, test.expectedFeatures)
+
+		}
+	}
+}