introduce helm-dependency-extra-args

addresses #368

Author: nazarewk

ct/cmd/root.go

@@ -95,6 +95,8 @@ func addCommonLintAndInstallFlags(flags *pflag.FlagSet) {
 		specified on a per-repo basis with an equals sign as delimiter
 		(e.g. 'myrepo=--username test --password secret'). May be specified
 		multiple times or separate values with commas`))
+	flags.StringSlice("helm-dependency-extra-args", []string{}, heredoc.Doc(`
+		Additional arguments for 'helm dependency build' (e.g. ["--skip-refresh"]`))
 	flags.Bool("debug", false, heredoc.Doc(`
 		Print CLI calls of external tools to stdout (caution: setting this may
 		expose sensitive data when helm-repo-extra-args contains passwords)`))

pkg/chart/chart.go

@@ -67,6 +67,8 @@ type Git interface {
 //
 // BuildDependencies builds the chart's dependencies
 //
+// BuildDependenciesWithArgs allows passing additional arguments to BuildDependencies
+//
 // LintWithValues runs `helm lint` for the given chart using the specified values file.
 // Pass a zero value for valuesFile in order to run lint without specifying a values file.
 //
@@ -82,6 +84,7 @@ type Git interface {
 type Helm interface {
 	AddRepo(name string, url string, extraArgs []string) error
 	BuildDependencies(chart string) error
+	BuildDependenciesWithArgs(chart string, extraArgs []string) error
 	LintWithValues(chart string, valuesFile string) error
 	InstallWithValues(chart string, valuesFile string, namespace string, release string) error
 	Upgrade(chart string, namespace string, release string) error
@@ -367,15 +370,15 @@ func (t *Testing) processCharts(action func(chart *Chart) TestResult) ([]TestRes
 		defer t.git.RemoveWorktree(worktreePath)
 
 		for _, chart := range charts {
-			if err := t.helm.BuildDependencies(t.computePreviousRevisionPath(chart.Path())); err != nil {
+			if err := t.helm.BuildDependenciesWithArgs(t.computePreviousRevisionPath(chart.Path()), t.config.HelmDependencyExtraArgs); err != nil {
 				// Only print error (don't exit) if building dependencies for previous revision fails.
 				fmt.Println(errors.Wrapf(err, "Error building dependencies for previous revision of chart '%s'\n", chart))
 			}
 		}
 	}
 
 	for _, chart := range charts {
-		if err := t.helm.BuildDependencies(chart.Path()); err != nil {
+		if err := t.helm.BuildDependenciesWithArgs(chart.Path(), t.config.HelmDependencyExtraArgs); err != nil {
 			return nil, errors.Wrapf(err, "Error building dependencies for chart '%s'", chart)
 		}
 

pkg/chart/chart_test.go

@@ -89,10 +89,16 @@ func (l *fakeLinter) Yamale(yamlFile, schemaFile string) error {
 	return nil
 }
 
-type fakeHelm struct{}
+type fakeHelm struct {
+	mock.Mock
+}
 
-func (h fakeHelm) AddRepo(name, url string, extraArgs []string) error   { return nil }
-func (h fakeHelm) BuildDependencies(chart string) error                 { return nil }
+func (h fakeHelm) AddRepo(name, url string, extraArgs []string) error { return nil }
+func (h fakeHelm) BuildDependencies(chart string) error               { return nil }
+func (h fakeHelm) BuildDependenciesWithArgs(chart string, extraArgs []string) error {
+	h.Called(chart, extraArgs)
+	return nil
+}
 func (h fakeHelm) LintWithValues(chart string, valuesFile string) error { return nil }
 func (h fakeHelm) InstallWithValues(chart string, valuesFile string, namespace string, release string) error {
 	return nil
@@ -320,6 +326,29 @@ func TestLintYamlValidation(t *testing.T) {
 	runTests(false, 0, 0)
 }
 
+func TestLintDependencyExtraArgs(t *testing.T) {
+	chart := "testdata/test_lints"
+	args := []string{"--skip-refresh"}
+
+	fakeMockHelm := new(fakeHelm)
+	ct.helm = fakeMockHelm
+	ct.config.HelmDependencyExtraArgs = args
+	ct.config.Charts = []string{chart}
+
+	t.Run("lint-helm-dependency-extra-args", func(t *testing.T) {
+		call := fakeMockHelm.On("BuildDependenciesWithArgs", chart, args).Return(nil)
+		call.Repeatability = 1
+
+		results, err := ct.LintCharts()
+		assert.Nil(t, err)
+		for _, result := range results {
+			assert.Nil(t, result.Error)
+		}
+		// -1 is set after Repeatability runs out
+		assert.Equal(t, -1, call.Repeatability)
+	})
+}
+
 func TestGenerateInstallConfig(t *testing.T) {
 	type testData struct {
 		name  string

pkg/config/config.go

@@ -41,30 +41,31 @@ var (
 )
 
 type Configuration struct {
-	Remote                string   `mapstructure:"remote"`
-	TargetBranch          string   `mapstructure:"target-branch"`
-	Since                 string   `mapstructure:"since"`
-	BuildId               string   `mapstructure:"build-id"`
-	LintConf              string   `mapstructure:"lint-conf"`
-	ChartYamlSchema       string   `mapstructure:"chart-yaml-schema"`
-	ValidateMaintainers   bool     `mapstructure:"validate-maintainers"`
-	ValidateChartSchema   bool     `mapstructure:"validate-chart-schema"`
-	ValidateYaml          bool     `mapstructure:"validate-yaml"`
-	AdditionalCommands    []string `mapstructure:"additional-commands"`
-	CheckVersionIncrement bool     `mapstructure:"check-version-increment"`
-	ProcessAllCharts      bool     `mapstructure:"all"`
-	Charts                []string `mapstructure:"charts"`
-	ChartRepos            []string `mapstructure:"chart-repos"`
-	ChartDirs             []string `mapstructure:"chart-dirs"`
-	ExcludedCharts        []string `mapstructure:"excluded-charts"`
-	HelmExtraArgs         string   `mapstructure:"helm-extra-args"`
-	HelmRepoExtraArgs     []string `mapstructure:"helm-repo-extra-args"`
-	Debug                 bool     `mapstructure:"debug"`
-	Upgrade               bool     `mapstructure:"upgrade"`
-	SkipMissingValues     bool     `mapstructure:"skip-missing-values"`
-	Namespace             string   `mapstructure:"namespace"`
-	ReleaseLabel          string   `mapstructure:"release-label"`
-	ExcludeDeprecated     bool     `mapstructure:"exclude-deprecated"`
+	Remote                  string   `mapstructure:"remote"`
+	TargetBranch            string   `mapstructure:"target-branch"`
+	Since                   string   `mapstructure:"since"`
+	BuildId                 string   `mapstructure:"build-id"`
+	LintConf                string   `mapstructure:"lint-conf"`
+	ChartYamlSchema         string   `mapstructure:"chart-yaml-schema"`
+	ValidateMaintainers     bool     `mapstructure:"validate-maintainers"`
+	ValidateChartSchema     bool     `mapstructure:"validate-chart-schema"`
+	ValidateYaml            bool     `mapstructure:"validate-yaml"`
+	AdditionalCommands      []string `mapstructure:"additional-commands"`
+	CheckVersionIncrement   bool     `mapstructure:"check-version-increment"`
+	ProcessAllCharts        bool     `mapstructure:"all"`
+	Charts                  []string `mapstructure:"charts"`
+	ChartRepos              []string `mapstructure:"chart-repos"`
+	ChartDirs               []string `mapstructure:"chart-dirs"`
+	ExcludedCharts          []string `mapstructure:"excluded-charts"`
+	HelmExtraArgs           string   `mapstructure:"helm-extra-args"`
+	HelmRepoExtraArgs       []string `mapstructure:"helm-repo-extra-args"`
+	HelmDependencyExtraArgs []string `mapstructure:"helm-dependency-extra-args"`
+	Debug                   bool     `mapstructure:"debug"`
+	Upgrade                 bool     `mapstructure:"upgrade"`
+	SkipMissingValues       bool     `mapstructure:"skip-missing-values"`
+	Namespace               string   `mapstructure:"namespace"`
+	ReleaseLabel            string   `mapstructure:"release-label"`
+	ExcludeDeprecated       bool     `mapstructure:"exclude-deprecated"`
 }
 
 func LoadConfiguration(cfgFile string, cmd *cobra.Command, printConfig bool) (*Configuration, error) {

pkg/tool/helm.go

@@ -37,7 +37,11 @@ func (h Helm) AddRepo(name string, url string, extraArgs []string) error {
 }
 
 func (h Helm) BuildDependencies(chart string) error {
-	return h.exec.RunProcess("helm", "dependency", "build", chart)
+	return h.BuildDependenciesWithArgs(chart, []string{})
+}
+
+func (h Helm) BuildDependenciesWithArgs(chart string, extraArgs []string) error {
+	return h.exec.RunProcess("helm", "dependency", "build", chart, extraArgs)
 }
 
 func (h Helm) LintWithValues(chart string, valuesFile string) error {