Merge pull request #3247 from monopole/secretsAndMaps

Secrets and ConfigMaps with string data in kyaml

api/go.mod

@@ -4,6 +4,7 @@ go 1.14
 
 require (
 	github.com/evanphx/json-patch v4.5.0+incompatible
+	github.com/go-errors/errors v1.0.1
 	github.com/go-openapi/spec v0.19.5
 	github.com/golangci/golangci-lint v1.21.0
 	github.com/google/go-cmp v0.3.0

api/internal/wrappy/factory.go

@@ -6,7 +6,9 @@ package wrappy
 import (
 	"bytes"
 	"fmt"
+	"sort"
 
+	"github.com/go-errors/errors"
 	"sigs.k8s.io/kustomize/api/ifc"
 	"sigs.k8s.io/kustomize/api/konfig"
 	"sigs.k8s.io/kustomize/api/types"
@@ -76,11 +78,107 @@ func (k *WNodeFactory) Hasher() ifc.KunstructuredHasher {
 }
 
 func (k *WNodeFactory) MakeConfigMap(
-	kvLdr ifc.KvLoader, args *types.ConfigMapArgs) (ifc.Kunstructured, error) {
-	panic("TODO(#WNodeFactory): implement MakeConfigMap")
+	ldr ifc.KvLoader, args *types.ConfigMapArgs) (ifc.Kunstructured, error) {
+	rn, err := k.makeConfigMap(ldr, args)
+	if err != nil {
+		return nil, err
+	}
+	return FromRNode(rn), nil
+}
+
+func (k *WNodeFactory) makeConfigMap(
+	ldr ifc.KvLoader, args *types.ConfigMapArgs) (*yaml.RNode, error) {
+	rn, err := yaml.Parse(`
+apiVersion: v1
+kind: ConfigMap
+`)
+	if err != nil {
+		return nil, err
+	}
+	err = applyGeneratorArgs(rn, ldr, args.GeneratorArgs)
+	return rn, err
 }
 
 func (k *WNodeFactory) MakeSecret(
-	kvLdr ifc.KvLoader, args *types.SecretArgs) (ifc.Kunstructured, error) {
-	panic("TODO(#WNodeFactory): implement MakeSecret")
+	ldr ifc.KvLoader, args *types.SecretArgs) (ifc.Kunstructured, error) {
+	rn, err := k.makeSecret(ldr, args)
+	if err != nil {
+		return nil, err
+	}
+	return FromRNode(rn), nil
+}
+
+func (k *WNodeFactory) makeSecret(
+	ldr ifc.KvLoader, args *types.SecretArgs) (*yaml.RNode, error) {
+	rn, err := yaml.Parse(`
+apiVersion: v1
+kind: Secret
+`)
+	if err != nil {
+		return nil, err
+	}
+	err = applyGeneratorArgs(rn, ldr, args.GeneratorArgs)
+	if 1+1 == 2 {
+		err = fmt.Errorf("TODO(WNodeFactory): finish implementation of makeSecret")
+	}
+	return rn, err
+}
+
+func applyGeneratorArgs(
+	rn *yaml.RNode, ldr ifc.KvLoader, args types.GeneratorArgs) error {
+	if _, err := rn.Pipe(yaml.SetK8sName(args.Name)); err != nil {
+		return err
+	}
+	if args.Namespace != "" {
+		if _, err := rn.Pipe(yaml.SetK8sNamespace(args.Namespace)); err != nil {
+			return err
+		}
+	}
+	all, err := ldr.Load(args.KvPairSources)
+	if err != nil {
+		return errors.WrapPrefix(err, "loading KV pairs", 0)
+	}
+	for _, p := range all {
+		if err := ldr.Validator().ErrIfInvalidKey(p.Key); err != nil {
+			return err
+		}
+		if _, err := rn.Pipe(yaml.SetK8sData(p.Key, p.Value)); err != nil {
+			return errors.WrapPrefix(err, "configMap generate error", 0)
+		}
+	}
+	copyLabelsAndAnnotations(rn, args.Options)
+	return nil
+}
+
+// copyLabelsAndAnnotations copies labels and annotations from
+// GeneratorOptions into the given object.
+func copyLabelsAndAnnotations(
+	rn *yaml.RNode, opts *types.GeneratorOptions) error {
+	if opts == nil {
+		return nil
+	}
+	for _, k := range sortedKeys(opts.Labels) {
+		v := opts.Labels[k]
+		if _, err := rn.Pipe(yaml.SetLabel(k, v)); err != nil {
+			return err
+		}
+	}
+	for _, k := range sortedKeys(opts.Annotations) {
+		v := opts.Annotations[k]
+		if _, err := rn.Pipe(yaml.SetAnnotation(k, v)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func sortedKeys(m map[string]string) []string {
+	keys := make([]string, len(m))
+	i := 0
+	for k := range m {
+		keys[i] = k
+		i++
+	}
+	sort.Strings(keys)
+	return keys
 }

api/internal/wrappy/factory_test.go

@@ -5,10 +5,395 @@ package wrappy
 
 import (
 	"fmt"
+	"path/filepath"
 	"reflect"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/api/filesys"
+	"sigs.k8s.io/kustomize/api/kv"
+	"sigs.k8s.io/kustomize/api/loader"
+	valtest_test "sigs.k8s.io/kustomize/api/testutils/valtest"
+	"sigs.k8s.io/kustomize/api/types"
 )
 
+func TestMakeConfigMap(t *testing.T) {
+	factory := &WNodeFactory{}
+	type expected struct {
+		out    string
+		errMsg string
+	}
+
+	testCases := map[string]struct {
+		args types.ConfigMapArgs
+		exp  expected
+	}{
+		"construct config map from env": {
+			args: types.ConfigMapArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "envConfigMap",
+					KvPairSources: types.KvPairSources{
+						EnvSources: []string{
+							filepath.Join("configmap", "app.env"),
+						},
+					},
+				},
+			},
+			exp: expected{
+				out: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: envConfigMap
+data:
+  DB_USERNAME: admin
+  DB_PASSWORD: qwerty
+`,
+			},
+		},
+		"construct config map from text file": {
+			args: types.ConfigMapArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "fileConfigMap1",
+					KvPairSources: types.KvPairSources{
+						FileSources: []string{
+							filepath.Join("configmap", "app-init.ini"),
+						},
+					},
+				},
+			},
+			exp: expected{
+				out: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: fileConfigMap1
+data:
+  app-init.ini: |
+    FOO=bar
+    BAR=baz
+`,
+			},
+		},
+		"construct config map from text and binary file": {
+			args: types.ConfigMapArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "fileConfigMap2",
+					KvPairSources: types.KvPairSources{
+						FileSources: []string{
+							filepath.Join("configmap", "app-init.ini"),
+							filepath.Join("configmap", "app.bin"),
+						},
+					},
+				},
+			},
+			exp: expected{
+				errMsg: "configMap generate error: key 'app.bin' appears " +
+					"to have non-utf8 data; binaryData field not yet supported",
+				out: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: fileConfigMap2
+data:
+  app-init.ini: |
+    FOO=bar
+    BAR=baz
+`,
+			},
+		},
+		"construct config map from literal": {
+			args: types.ConfigMapArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "literalConfigMap1",
+					KvPairSources: types.KvPairSources{
+						LiteralSources: []string{"a=x", "b=y", "c=\"Hello World\"", "d='true'"},
+					},
+					Options: &types.GeneratorOptions{
+						Labels: map[string]string{
+							"foo": "bar",
+						},
+					},
+				},
+			},
+			exp: expected{
+				out: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: literalConfigMap1
+  labels:
+    foo: 'bar'
+data:
+  a: x
+  b: y
+  c: Hello World
+  d: "true"
+`,
+			},
+		},
+		"construct config map from literal with GeneratorOptions in ConfigMapArgs": {
+			args: types.ConfigMapArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "literalConfigMap2",
+					KvPairSources: types.KvPairSources{
+						LiteralSources: []string{"a=x", "b=y", "c=\"Hello World\"", "d='true'"},
+					},
+					Options: &types.GeneratorOptions{
+						Labels: map[string]string{
+							"veggie": "celery",
+							"dog":    "beagle",
+							"cat":    "annoying",
+						},
+						Annotations: map[string]string{
+							"river": "Missouri",
+							"city":  "Iowa City",
+						},
+					},
+				},
+			},
+			exp: expected{
+				out: `apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: literalConfigMap2
+  labels:
+    cat: 'annoying'
+    dog: 'beagle'
+    veggie: 'celery'
+  annotations:
+    city: 'Iowa City'
+    river: 'Missouri'
+data:
+  a: x
+  b: y
+  c: Hello World
+  d: "true"
+`,
+			},
+		},
+	}
+	fSys := filesys.MakeFsInMemory()
+	fSys.WriteFile(
+		filesys.RootedPath("configmap", "app.env"),
+		[]byte("DB_USERNAME=admin\nDB_PASSWORD=qwerty\n"))
+	fSys.WriteFile(
+		filesys.RootedPath("configmap", "app-init.ini"),
+		[]byte("FOO=bar\nBAR=baz\n"))
+	fSys.WriteFile(
+		filesys.RootedPath("configmap", "app.bin"),
+		[]byte{0xff, 0xfd})
+	kvLdr := kv.NewLoader(
+		loader.NewFileLoaderAtRoot(fSys),
+		valtest_test.MakeFakeValidator())
+
+	for n := range testCases {
+		tc := testCases[n]
+		t.Run(n, func(t *testing.T) {
+			rn, err := factory.makeConfigMap(kvLdr, &tc.args)
+			if err != nil {
+				if !assert.EqualError(t, err, tc.exp.errMsg) {
+					t.FailNow()
+				}
+				return
+			}
+			if tc.exp.errMsg != "" {
+				t.Fatalf("%s: should return error '%s'", n, tc.exp.errMsg)
+			}
+			output := rn.MustString()
+			if !assert.Equal(t, tc.exp.out, output) {
+				t.FailNow()
+			}
+		})
+	}
+}
+
+func TestMakeSecret(t *testing.T) {
+	factory := &WNodeFactory{}
+	type expected struct {
+		out    string
+		errMsg string
+	}
+
+	testCases := map[string]struct {
+		args types.SecretArgs
+		exp  expected
+	}{
+		"construct secret from env": {
+			args: types.SecretArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "envSecret",
+					KvPairSources: types.KvPairSources{
+						EnvSources: []string{
+							filepath.Join("secret", "app.env"),
+						},
+					},
+				},
+			},
+			exp: expected{
+				errMsg: "TODO(WNodeFactory): finish implementation of makeSecret",
+				out: `apiVersion: v1
+kind: Secret
+metadata:
+  name: envSecret
+data:
+  DB_USERNAME: admin
+  DB_PASSWORD: qwerty
+`,
+			},
+		},
+		"construct secret from text file": {
+			args: types.SecretArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "fileSecret1",
+					KvPairSources: types.KvPairSources{
+						FileSources: []string{
+							filepath.Join("secret", "app-init.ini"),
+						},
+					},
+				},
+			},
+			exp: expected{
+				errMsg: "TODO(WNodeFactory): finish implementation of makeSecret",
+				out: `apiVersion: v1
+kind: Secret
+metadata:
+  name: fileSecret1
+data:
+  app-init.ini: |
+    FOO=bar
+    BAR=baz
+`,
+			},
+		},
+		"construct secret from text and binary file": {
+			args: types.SecretArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "fileSecret2",
+					KvPairSources: types.KvPairSources{
+						FileSources: []string{
+							filepath.Join("secret", "app-init.ini"),
+							filepath.Join("secret", "app.bin"),
+						},
+					},
+				},
+			},
+			exp: expected{
+				errMsg: "TODO(WNodeFactory): finish implementation of makeSecret",
+				out: `apiVersion: v1
+kind: Secret
+metadata:
+  name: fileSecret2
+data:
+  app-init.ini: |
+    FOO=bar
+    BAR=baz
+`,
+			},
+		},
+		"construct secret from literal": {
+			args: types.SecretArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "literalSecret1",
+					KvPairSources: types.KvPairSources{
+						LiteralSources: []string{"a=x", "b=y", "c=\"Hello World\"", "d='true'"},
+					},
+					Options: &types.GeneratorOptions{
+						Labels: map[string]string{
+							"foo": "bar",
+						},
+					},
+				},
+			},
+			exp: expected{
+				errMsg: "TODO(WNodeFactory): finish implementation of makeSecret",
+				out: `apiVersion: v1
+kind: Secret
+metadata:
+  name: literalSecret1
+  labels:
+    foo: 'bar'
+data:
+  a: x
+  b: y
+  c: Hello World
+  d: "true"
+`,
+			},
+		},
+		"construct secret from literal with GeneratorOptions in SecretArgs": {
+			args: types.SecretArgs{
+				GeneratorArgs: types.GeneratorArgs{
+					Name: "literalSecret2",
+					KvPairSources: types.KvPairSources{
+						LiteralSources: []string{"a=x", "b=y", "c=\"Hello World\"", "d='true'"},
+					},
+					Options: &types.GeneratorOptions{
+						Labels: map[string]string{
+							"veggie": "celery",
+							"dog":    "beagle",
+							"cat":    "annoying",
+						},
+						Annotations: map[string]string{
+							"river": "Missouri",
+							"city":  "Iowa City",
+						},
+					},
+				},
+			},
+			exp: expected{
+				errMsg: "TODO(WNodeFactory): finish implementation of makeSecret",
+				out: `apiVersion: v1
+kind: Secret
+metadata:
+  name: literalSecret2
+  labels:
+    cat: 'annoying'
+    dog: 'beagle'
+    veggie: 'celery'
+  annotations:
+    city: 'Iowa City'
+    river: 'Missouri'
+data:
+  a: x
+  b: y
+  c: Hello World
+  d: "true"
+`,
+			},
+		},
+	}
+	fSys := filesys.MakeFsInMemory()
+	fSys.WriteFile(
+		filesys.RootedPath("secret", "app.env"),
+		[]byte("DB_USERNAME=admin\nDB_PASSWORD=qwerty\n"))
+	fSys.WriteFile(
+		filesys.RootedPath("secret", "app-init.ini"),
+		[]byte("FOO=bar\nBAR=baz\n"))
+	fSys.WriteFile(
+		filesys.RootedPath("secret", "app.bin"),
+		[]byte{0xff, 0xfd})
+	kvLdr := kv.NewLoader(
+		loader.NewFileLoaderAtRoot(fSys),
+		valtest_test.MakeFakeValidator())
+
+	for n := range testCases {
+		tc := testCases[n]
+		t.Run(n, func(t *testing.T) {
+			rn, err := factory.makeSecret(kvLdr, &tc.args)
+			if err != nil {
+				if !assert.EqualError(t, err, tc.exp.errMsg) {
+					t.FailNow()
+				}
+				return
+			}
+			if tc.exp.errMsg != "" {
+				t.Fatalf("%s: should return error '%s'", n, tc.exp.errMsg)
+			}
+			output := rn.MustString()
+			if !assert.Equal(t, tc.exp.out, output) {
+				t.FailNow()
+			}
+		})
+	}
+}
+
 func TestSliceFromBytes(t *testing.T) {
 	factory := &WNodeFactory{}
 	testConfigMap :=

kyaml/yaml/kfns.go

@@ -4,6 +4,10 @@
 package yaml
 
 import (
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
 	"gopkg.in/yaml.v3"
 	"sigs.k8s.io/kustomize/kyaml/errors"
 )
@@ -40,6 +44,70 @@ func ClearEmptyAnnotations(rn *RNode) error {
 	return nil
 }
 
+// k8sDataSetter place key value pairs in either a 'data' or 'binaryData' field.
+// Useful for creating ConfigMaps and Secrets.
+type k8sDataSetter struct {
+	Key             string `yaml:"key,omitempty"`
+	Value           string `yaml:"value,omitempty"`
+	ProtectExisting bool   `yaml:"protectExisting,omitempty"`
+}
+
+func (s k8sDataSetter) Filter(rn *RNode) (*RNode, error) {
+	if !utf8.Valid([]byte(s.Value)) {
+		// Core k8s ConfigMaps store k,v pairs with 'v' passing the above utf8
+		// test in a mapping field called "data" as a string. Pairs with a 'v'
+		// failing this test go into a field called binaryData as a []byte.
+		// TODO: support this distinction in kyaml with NodeTagBytes?
+		return nil, errors.Errorf(
+			"key '%s' appears to have non-utf8 data; "+
+				"binaryData field not yet supported", s.Key)
+	}
+	keyNode, err := rn.Pipe(Lookup(DataField, s.Key))
+	if err != nil {
+		return nil, err
+	}
+	if keyNode != nil && s.ProtectExisting {
+		return nil, fmt.Errorf(
+			"protecting existing %s='%s' against attempt to add new value '%s'",
+			s.Key, strings.TrimSpace(keyNode.MustString()), s.Value)
+	}
+	v := NewScalarRNode(s.Value)
+	v.YNode().Tag = NodeTagString
+	// TODO: use schema to determine node style and tag.
+	// FormatNonStringStyle(v.YNode(), *k8sSch)
+	_, err = rn.Pipe(
+		LookupCreate(yaml.MappingNode, DataField), SetField(s.Key, v))
+	return rn, err
+}
+
+func SetK8sData(key, value string) k8sDataSetter {
+	return k8sDataSetter{Key: key, Value: value, ProtectExisting: true}
+}
+
+// k8sMetaSetter sets a name at metadata.{key}.
+// Creates metadata if does not exist.
+type k8sMetaSetter struct {
+	Key   string `yaml:"key,omitempty"`
+	Value string `yaml:"value,omitempty"`
+}
+
+func (s k8sMetaSetter) Filter(rn *RNode) (*RNode, error) {
+	v := NewScalarRNode(s.Value)
+	v.YNode().Tag = NodeTagString
+	_, err := rn.Pipe(
+		PathGetter{Path: []string{MetadataField}, Create: yaml.MappingNode},
+		FieldSetter{Name: s.Key, Value: v})
+	return rn, err
+}
+
+func SetK8sName(value string) k8sMetaSetter {
+	return k8sMetaSetter{Key: NameField, Value: value}
+}
+
+func SetK8sNamespace(value string) k8sMetaSetter {
+	return k8sMetaSetter{Key: NamespaceField, Value: value}
+}
+
 // AnnotationSetter sets an annotation at metadata.annotations.
 // Creates metadata.annotations if does not exist.
 type AnnotationSetter struct {

kyaml/yaml/kfns_test.go

@@ -5,6 +5,8 @@ package yaml
 
 import (
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 var input = `apiVersion: v1
@@ -16,6 +18,72 @@ data:
   enableRisky: "false"
 `
 
+func TestSetK8sData(t *testing.T) {
+	rn := MustParse(`apiVersion: v1
+kind: ConfigMap
+data:
+  altGreeting: "Good Morning!"
+`)
+	_, err := rn.Pipe(
+		SetK8sData("foo", "bar"),
+		SetK8sData("fruit", "apple"),
+		SetK8sData("veggie", "celery"))
+	assert.NoError(t, err)
+	output := rn.MustString()
+
+	expected := `apiVersion: v1
+kind: ConfigMap
+data:
+  altGreeting: "Good Morning!"
+  foo: bar
+  fruit: apple
+  veggie: celery
+`
+	if !assert.Equal(t, expected, output) {
+		t.FailNow()
+	}
+}
+
+func TestSetK8sDataForbidOverwrite(t *testing.T) {
+	rn := MustParse(`apiVersion: v1
+kind: ConfigMap
+data:
+  altGreeting: "Good Morning!"
+`)
+	_, err := rn.Pipe(
+		SetK8sData("foo", "bar"),
+		SetK8sData("altGreeting", "hey"),
+		SetK8sData("veggie", "celery"))
+	assert.EqualError(
+		t, err, "protecting existing altGreeting='\"Good Morning!\"' "+
+			"against attempt to add new value 'hey'")
+}
+
+func TestSetMeta(t *testing.T) {
+	rn := MustParse(`apiVersion: v1
+kind: ConfigMap
+data:
+  altGreeting: "Good Morning!"
+`)
+	_, err := rn.Pipe(SetK8sName("foo"), SetK8sNamespace("bar"))
+	if err != nil {
+		t.Fatalf("unexpected error %v", err)
+	}
+	output := rn.MustString()
+
+	expected := `apiVersion: v1
+kind: ConfigMap
+data:
+  altGreeting: "Good Morning!"
+metadata:
+  name: foo
+  namespace: bar
+`
+	if !assert.Equal(t, expected, output) {
+		t.FailNow()
+	}
+}
+
 func TestSetLabel1(t *testing.T) {
 	rn := MustParse(input)
 	_, err := rn.Pipe(SetLabel("foo", "bar"))