refactor(yaml): switch to goccy/go-yaml library

Signed-off-by: yxxhero <aiopsclub@163.com>

docs/index.md

@@ -569,7 +569,6 @@ Helmfile uses some OS environment variables to override default behaviour:
 * `HELMFILE_ENVIRONMENT` - specify [Helmfile environment](https://helmfile.readthedocs.io/en/latest/#environment), it has lower priority than CLI argument `--environment`
 * `HELMFILE_TEMPDIR` - specify directory to store temporary files
 * `HELMFILE_UPGRADE_NOTICE_DISABLED` - expecting any non-empty value to skip the check for the latest version of Helmfile in [helmfile version](https://helmfile.readthedocs.io/en/latest/#version)
-* `HELMFILE_GOCCY_GOYAML` - use *goccy/go-yaml* instead of *gopkg.in/yaml.v2*.  It's `false` by default in Helmfile v0.x and `true` by default for Helmfile v1.x.
 * `HELMFILE_CACHE_HOME` - specify directory to store cached files for remote operations
 * `HELMFILE_FILE_PATH` - specify the path to the helmfile.yaml file
 * `HELMFILE_INTERACTIVE` - enable interactive mode, expecting `true` lower case. The same as `--interactive` CLI flag
@@ -578,8 +577,8 @@ Helmfile uses some OS environment variables to override default behaviour:
 
 ```
 Declaratively deploy your Kubernetes manifests, Kustomize configs, and Charts as Helm releases in one shot
-V1 mode = false
+V1 mode = true 
-YAML library = gopkg.in/yaml.v2
+YAML library = goccy/go-yaml
 
 Usage:
   helmfile [command]

go.mod

@@ -28,7 +28,6 @@ require (
 	go.uber.org/zap v1.27.0
 	golang.org/x/sync v0.13.0
 	golang.org/x/term v0.31.0
-	gopkg.in/yaml.v2 v2.4.0
 	helm.sh/helm/v3 v3.17.3
 	k8s.io/apimachinery v0.32.3
 )
@@ -309,6 +308,7 @@ require (
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/gookit/color.v1 v1.1.6 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/api v0.32.3 // indirect
 	k8s.io/apiextensions-apiserver v0.32.2 // indirect

pkg/app/app_template_test.go

@@ -16,7 +16,6 @@ import (
 	"github.com/helmfile/helmfile/pkg/exectest"
 	ffs "github.com/helmfile/helmfile/pkg/filesystem"
 	"github.com/helmfile/helmfile/pkg/helmexec"
-	"github.com/helmfile/helmfile/pkg/runtime"
 )
 
 func TestTemplate(t *testing.T) {
@@ -338,7 +337,6 @@ releases:
 
 func TestTemplate_StrictParsing(t *testing.T) {
 	type testcase struct {
-		goccyGoYaml bool
 		ns    string
 		error string
 	}
@@ -346,12 +344,6 @@ func TestTemplate_StrictParsing(t *testing.T) {
 	check := func(t *testing.T, tc testcase) {
 		t.Helper()
 
-		v := runtime.GoccyGoYaml
-		runtime.GoccyGoYaml = tc.goccyGoYaml
-		t.Cleanup(func() {
-			runtime.GoccyGoYaml = v
-		})
-
 		var helm = &exectest.Helm{
 			FailOnUnexpectedList: true,
 			FailOnUnexpectedDiff: true,
@@ -413,7 +405,6 @@ releases:
 
 	t.Run("fail due to unknown field with goccy/go-yaml", func(t *testing.T) {
 		check(t, testcase{
-			goccyGoYaml: true,
 			error: `in ./helmfile.yaml: failed to read helmfile.yaml: reading document at index 1. Started seeing this since Helmfile v1? Add the .gotmpl file extension: [4:3] unknown field "foobar"
    2 | releases:
    3 | - name: app1
@@ -422,14 +413,6 @@ releases:
    5 |   chart: incubator/raw`,
 		})
 	})
-
-	t.Run("fail due to unknown field with gopkg.in/yaml.v2", func(t *testing.T) {
-		check(t, testcase{
-			goccyGoYaml: false,
-			error: `in ./helmfile.yaml: failed to read helmfile.yaml: reading document at index 1. Started seeing this since Helmfile v1? Add the .gotmpl file extension: yaml: unmarshal errors:
-  line 4: field foobar not found in type state.ReleaseSpec`,
-		})
-	})
 }
 
 func TestTemplate_CyclicInheritance(t *testing.T) {

pkg/app/app_test.go

@@ -26,7 +26,6 @@ import (
 	ffs "github.com/helmfile/helmfile/pkg/filesystem"
 	"github.com/helmfile/helmfile/pkg/helmexec"
 	"github.com/helmfile/helmfile/pkg/remote"
-	"github.com/helmfile/helmfile/pkg/runtime"
 	"github.com/helmfile/helmfile/pkg/state"
 	"github.com/helmfile/helmfile/pkg/testhelper"
 	"github.com/helmfile/helmfile/pkg/testutil"
@@ -4020,15 +4019,9 @@ myrelease4	testNamespace	true   	true     	chart:mychart1,id:myrelease1,name:myr
 
 	assert.Equal(t, expected, out)
 }
-func testSetStringValuesTemplate(t *testing.T, goccyGoYaml bool) {
+func testSetStringValuesTemplate(t *testing.T) {
 	t.Helper()
 
-	v := runtime.GoccyGoYaml
-	runtime.GoccyGoYaml = goccyGoYaml
-	t.Cleanup(func() {
-		runtime.GoccyGoYaml = v
-	})
-
 	files := map[string]string{
 		"/path/to/helmfile.yaml.gotmpl": `
 releases:
@@ -4088,15 +4081,9 @@ releases:
 	}
 }
 
-func testSetValuesTemplate(t *testing.T, goccyGoYaml bool) {
+func testSetValuesTemplate(t *testing.T) {
 	t.Helper()
 
-	v := runtime.GoccyGoYaml
-	runtime.GoccyGoYaml = goccyGoYaml
-	t.Cleanup(func() {
-		runtime.GoccyGoYaml = v
-	})
-
 	files := map[string]string{
 		"/path/to/helmfile.yaml.gotmpl": `
 releases:
@@ -4162,21 +4149,13 @@ releases:
 
 func TestSetValuesTemplate(t *testing.T) {
 	t.Run("with goccy/go-yaml", func(t *testing.T) {
-		testSetValuesTemplate(t, true)
+		testSetValuesTemplate(t)
-	})
-
-	t.Run("with gopkg.in/yaml.v2", func(t *testing.T) {
-		testSetValuesTemplate(t, false)
 	})
 }
 
 func TestSetStringValuesTemplate(t *testing.T) {
 	t.Run("with goccy/go-yaml", func(t *testing.T) {
-		testSetStringValuesTemplate(t, true)
+		testSetStringValuesTemplate(t)
-	})
-
-	t.Run("with gopkg.in/yaml.v2", func(t *testing.T) {
-		testSetStringValuesTemplate(t, false)
 	})
 }
 

pkg/envvar/const.go

@@ -12,7 +12,6 @@ const (
 	FilePath              = "HELMFILE_FILE_PATH"
 	TempDir               = "HELMFILE_TEMPDIR"
 	UpgradeNoticeDisabled = "HELMFILE_UPGRADE_NOTICE_DISABLED"
-	GoccyGoYaml           = "HELMFILE_GOCCY_GOYAML"
 	CacheHome             = "HELMFILE_CACHE_HOME"
 	Interactive           = "HELMFILE_INTERACTIVE"
 )

pkg/runtime/runtime.go

@@ -2,35 +2,19 @@ package runtime
 
 import (
 	"fmt"
-	"os"
-
-	"github.com/helmfile/helmfile/pkg/envvar"
 )
 
 var (
 	// GoccyGoYaml is set to true in order to let Helmfile use
 	// goccy/go-yaml instead of gopkg.in/yaml.v2.
-	// It's false by default in Helmfile v0.x and true by default for Helmfile v1.x.
 	GoccyGoYaml bool
 )
 
 func Info() string {
-	yamlLib := "gopkg.in/yaml.v2"
+	yamlLib := "goccy/go-yaml"
-	if GoccyGoYaml {
-		yamlLib = "goccy/go-yaml"
-	}
-
 	return fmt.Sprintf("YAML library = %v", yamlLib)
 }
 
 func init() {
-	// You can switch the YAML library at runtime via an envvar:
-	switch os.Getenv(envvar.GoccyGoYaml) {
-	case "true":
 	GoccyGoYaml = true
-	case "false":
-		GoccyGoYaml = false
-	default:
-		GoccyGoYaml = true
-	}
 }

pkg/tmpl/context_funcs_test.go

@@ -200,15 +200,9 @@ func TestToYaml(t *testing.T) {
 	require.Equal(t, expected, actual)
 }
 
-func testFromYaml(t *testing.T, goccyGoYaml bool, expected Values) {
+func testFromYaml(t *testing.T, expected Values) {
 	t.Helper()
 
-	v := runtime.GoccyGoYaml
-	runtime.GoccyGoYaml = goccyGoYaml
-	t.Cleanup(func() {
-		runtime.GoccyGoYaml = v
-	})
-
 	raw := `foo:
   bar: BAR
 `
@@ -221,20 +215,6 @@ func TestFromYaml(t *testing.T) {
 	t.Run("with goccy/go-yaml", func(t *testing.T) {
 		testFromYaml(
 			t,
-			true,
-			// nolint: unconvert
-			Values(map[string]any{
-				"foo": map[string]any{
-					"bar": "BAR",
-				},
-			}),
-		)
-	})
-
-	t.Run("with gopkg.in/yaml.v2", func(t *testing.T) {
-		testFromYaml(
-			t,
-			false,
 			// nolint: unconvert
 			Values(map[string]any{
 				"foo": map[string]any{

pkg/yaml/yaml.go

@@ -5,9 +5,6 @@ import (
 	"io"
 
 	"github.com/goccy/go-yaml"
-	v2 "gopkg.in/yaml.v2"
-
-	"github.com/helmfile/helmfile/pkg/runtime"
 )
 
 type Encoder interface {
@@ -17,19 +14,11 @@ type Encoder interface {
 
 // NewEncoder creates and returns a function that is used to encode a Go object to a YAML document
 func NewEncoder(w io.Writer) Encoder {
-	if runtime.GoccyGoYaml {
 	return yaml.NewEncoder(w)
-	}
-
-	return v2.NewEncoder(w)
 }
 
 func Unmarshal(data []byte, v any) error {
-	if runtime.GoccyGoYaml {
 	return yaml.Unmarshal(data, v)
-	}
-
-	return v2.Unmarshal(data, v)
 }
 
 // NewDecoder creates and returns a function that is used to decode a YAML document
@@ -37,7 +26,6 @@ func Unmarshal(data []byte, v any) error {
 // When strict is true, this function ensures that every field found in the YAML document
 // to have the corresponding field in the decoded Go struct.
 func NewDecoder(data []byte, strict bool) func(any) error {
-	if runtime.GoccyGoYaml {
 	var opts []yaml.DecodeOption
 	if strict {
 		opts = append(opts, yaml.DisallowUnknownField())
@@ -50,21 +38,12 @@ func NewDecoder(data []byte, strict bool) func(any) error {
 		opts...,
 	)
 
-		return func(v any) error {
-			return decoder.Decode(v)
-		}
-	}
-
-	decoder := v2.NewDecoder(bytes.NewReader(data))
-	decoder.SetStrict(strict)
-
 	return func(v any) error {
 		return decoder.Decode(v)
 	}
 }
 
 func Marshal(v any) ([]byte, error) {
-	if runtime.GoccyGoYaml {
 	var b bytes.Buffer
 	yamlEncoder := yaml.NewEncoder(
 		&b,
@@ -77,7 +56,4 @@ func Marshal(v any) ([]byte, error) {
 		_ = yamlEncoder.Close()
 	}()
 	return b.Bytes(), err
-	}
-
-	return v2.Marshal(v)
 }

pkg/yaml/yaml_test.go

@@ -4,25 +4,12 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
-
-	"github.com/helmfile/helmfile/pkg/runtime"
 )
 
-func testYamlMarshal(t *testing.T, goccyGoYaml bool) {
+func testYamlMarshal(t *testing.T) {
 	t.Helper()
 
-	var yamlLibraryName string
+	yamlLibraryName := "goccy/go-yaml"
-	if goccyGoYaml {
-		yamlLibraryName = "goccy/go-yaml"
-	} else {
-		yamlLibraryName = "gopkg.in/yaml.v2"
-	}
-
-	v := runtime.GoccyGoYaml
-	runtime.GoccyGoYaml = goccyGoYaml
-	t.Cleanup(func() {
-		runtime.GoccyGoYaml = v
-	})
 
 	tests := []struct {
 		Name string `yaml:"name"`
@@ -50,7 +37,6 @@ func testYamlMarshal(t *testing.T, goccyGoYaml bool) {
 			}},
 			expected: map[string]string{
 				"goccy/go-yaml": "name: John\ninfo:\n- age: 20\n  address: New York\n  annotation: 'on'\n",
-				"gopkg.in/yaml.v2": "name: John\ninfo:\n- age: 20\n  address: New York\n  annotation: \"on\"\n",
 			},
 		},
 	}
@@ -64,10 +50,6 @@ func testYamlMarshal(t *testing.T, goccyGoYaml bool) {
 
 func TestYamlMarshal(t *testing.T) {
 	t.Run("with goccy/go-yaml", func(t *testing.T) {
-		testYamlMarshal(t, true)
+		testYamlMarshal(t)
-	})
-
-	t.Run("with gopkg.in/yaml.v2", func(t *testing.T) {
-		testYamlMarshal(t, false)
 	})
 }

test/e2e/template/helmfile/snapshot_test.go

@@ -9,7 +9,6 @@ import (
 	"path/filepath"
 	"regexp"
 	goruntime "runtime"
-	"strconv"
 	"strings"
 	"testing"
 	"time"
@@ -59,17 +58,11 @@ func (f fakeInit) Force() bool {
 
 func TestHelmfileTemplateWithBuildCommand(t *testing.T) {
 	t.Run("with goccy/go-yaml", func(t *testing.T) {
-		testHelmfileTemplateWithBuildCommand(t, true)
+		testHelmfileTemplateWithBuildCommand(t)
-	})
-
-	t.Run("with gopkg.in/yaml.v2", func(t *testing.T) {
-		testHelmfileTemplateWithBuildCommand(t, false)
 	})
 }
 
-func testHelmfileTemplateWithBuildCommand(t *testing.T, goccyGoYaml bool) {
+func testHelmfileTemplateWithBuildCommand(t *testing.T) {
-	t.Setenv(envvar.GoccyGoYaml, strconv.FormatBool(goccyGoYaml))
-
 	localChartPortSets := make(map[int]struct{})
 
 	logger := helmexec.NewLogger(os.Stderr, "info")