Merge pull request #32 from pelotech/config-fixup

Clarify and improve internal/helm.Config

cmd/drone-helm/main.go

@@ -2,22 +2,21 @@ package main
 
 import (
 	"fmt"
-	"github.com/kelseyhightower/envconfig"
 	"os"
 
 	"github.com/pelotech/drone-helm3/internal/helm"
 )
 
 func main() {
-	var c helm.Config
+	cfg, err := helm.NewConfig(os.Stdout, os.Stderr)
 
-	if err := envconfig.Process("plugin", &c); err != nil {
+	if err != nil {
 		fmt.Fprintf(os.Stderr, "%s\n", err.Error())
 		return
 	}
 
 	// Make the plan
-	plan, err := helm.NewPlan(c)
+	plan, err := helm.NewPlan(*cfg)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "%w\n", err)
 		os.Exit(1)

internal/helm/config.go

@@ -2,62 +2,76 @@ package helm
 
 import (
 	"fmt"
-	"strings"
+	"github.com/kelseyhightower/envconfig"
+	"io"
 )
 
-// The Config struct captures the `settings` and `environment` blocks inthe application's drone
+// The Config struct captures the `settings` and `environment` blocks in the application's drone
 // config. Configuration in drone's `settings` block arrives as uppercase env vars matching the
-// config key, prefixed with `PLUGIN_`. Config from the `environment` block is *not* prefixed; any
+// config key, prefixed with `PLUGIN_`. Config from the `environment` block is uppercased, but does
-// keys that are likely to be in that block (i.e. things that use `from_secret` need an explicit
+// not have the `PLUGIN_` prefix. It may, however, be prefixed with the value in `$PLUGIN_PREFIX`.
-// `envconfig:` tag so that envconfig will look for a non-prefixed env var.
 type Config struct {
 	// Configuration for drone-helm itself
-	Command            helmCommand `envconfig:"HELM_COMMAND"`      // Helm command to run
+	Command            string   `envconfig:"HELM_COMMAND"`           // Helm command to run
-	DroneEvent         string      `envconfig:"DRONE_BUILD_EVENT"` // Drone event that invoked this plugin.
+	DroneEvent         string   `envconfig:"DRONE_BUILD_EVENT"`      // Drone event that invoked this plugin.
-	UpdateDependencies bool        `split_words:"true"`            // call `helm dependency update` before the main command
+	UpdateDependencies bool     `split_words:"true"`                 // Call `helm dependency update` before the main command
-	Repos              []string    `envconfig:"HELM_REPOS"`        // call `helm repo add` before the main command
+	Repos              []string `envconfig:"HELM_REPOS"`             // Call `helm repo add` before the main command
-	Prefix             string      ``                              // Prefix to use when looking up secret env vars
+	Prefix             string   ``                                   // Prefix to use when looking up secret env vars
+	Debug              bool     ``                                   // Generate debug output and pass --debug to all helm commands
+	Values             string   ``                                   // Argument to pass to --set in applicable helm commands
+	StringValues       string   `split_words:"true"`                 // Argument to pass to --set-string in applicable helm commands
+	ValuesFiles        []string `split_words:"true"`                 // Arguments to pass to --values in applicable helm commands
+	Namespace          string   ``                                   // Kubernetes namespace for all helm commands
+	KubeToken          string   `envconfig:"KUBERNETES_TOKEN"`       // Kubernetes authentication token to put in .kube/config
+	SkipTLSVerify      bool     `envconfig:"SKIP_TLS_VERIFY"`        // Put insecure-skip-tls-verify in .kube/config
+	Certificate        string   `envconfig:"KUBERNETES_CERTIFICATE"` // The Kubernetes cluster CA's self-signed certificate (must be base64-encoded)
+	APIServer          string   `envconfig:"API_SERVER"`             // The Kubernetes cluster's API endpoint
+	ServiceAccount     string   `split_words:"true"`                 // Account to use for connecting to the Kubernetes cluster
+	ChartVersion       string   `split_words:"true"`                 // Specific chart version to use in `helm upgrade`
+	DryRun             bool     `split_words:"true"`                 // Pass --dry-run to applicable helm commands
+	Wait               bool     ``                                   // Pass --wait to applicable helm commands
+	ReuseValues        bool     `split_words:"true"`                 // Pass --reuse-values to `helm upgrade`
+	Timeout            string   ``                                   // Argument to pass to --timeout in applicable helm commands
+	Chart              string   ``                                   // Chart argument to use in applicable helm commands
+	Release            string   ``                                   // Release argument to use in applicable helm commands
+	Force              bool     ``                                   // Pass --force to applicable helm commands
 
-	// Global helm config
+	Stdout io.Writer `ignored:"true"`
-	Debug          bool     ``                                                // global helm flag (also applies to drone-helm itself)
+	Stderr io.Writer `ignored:"true"`
-	KubeConfig     string   `split_words:"true" default:"/root/.kube/config"` // path to the kube config file
-	Values         string   ``
-	StringValues   string   `split_words:"true"`
-	ValuesFiles    []string `split_words:"true"`
-	Namespace      string   ``
-	KubeToken      string   `envconfig:"KUBERNETES_TOKEN"`
-	SkipTLSVerify  bool     `envconfig:"SKIP_TLS_VERIFY"`
-	Certificate    string   `envconfig:"KUBERNETES_CERTIFICATE"`
-	APIServer      string   `envconfig:"API_SERVER"`
-	ServiceAccount string   `envconfig:"SERVICE_ACCOUNT"` // Can't just use split_words; need envconfig to find the non-prefixed form
-
-	// Config specifically for `helm upgrade`
-	ChartVersion string `split_words:"true"` //
-	DryRun       bool   `split_words:"true"` // also available for `delete`
-	Wait         bool   ``                   //
-	ReuseValues  bool   `split_words:"true"` //
-	Timeout      string ``                   //
-	Chart        string ``                   // Also available for `lint`, in which case it must be a path to a chart directory
-	Release      string ``
-	Force        bool   `` //
 }
 
-type helmCommand string
+// NewConfig creates a Config and reads environment variables into it, accounting for several possible formats.
+func NewConfig(stdout, stderr io.Writer) (*Config, error) {
+	cfg := Config{
+		Stdout: stdout,
+		Stderr: stderr,
+	}
+	if err := envconfig.Process("plugin", &cfg); err != nil {
+		return nil, err
+	}
 
-// helmCommand.Decode checks the given value against the list of known commands and generates a helpful error if the command is unknown.
+	prefix := cfg.Prefix
-func (cmd *helmCommand) Decode(value string) error {
+
-	known := []string{"upgrade", "delete", "lint", "help"}
+	if err := envconfig.Process("", &cfg); err != nil {
-	for _, c := range known {
+		return nil, err
-		if value == c {
+	}
-			*cmd = helmCommand(value)
+
-			return nil
+	if prefix != "" {
+		if err := envconfig.Process(cfg.Prefix, &cfg); err != nil {
+			return nil, err
 		}
 	}
 
-	if value == "" {
+	if cfg.Debug && cfg.Stderr != nil {
-		return nil
+		cfg.logDebug()
 	}
-	known[len(known)-1] = fmt.Sprintf("or %s", known[len(known)-1])
+
-	return fmt.Errorf("unknown command '%s'. If specified, command must be %s",
+	return &cfg, nil
-		value, strings.Join(known, ", "))
+}
+
+func (cfg Config) logDebug() {
+	if cfg.KubeToken != "" {
+		cfg.KubeToken = "(redacted)"
+	}
+	fmt.Fprintf(cfg.Stderr, "Generated config: %+v\n", cfg)
 }

internal/helm/config_test.go

@@ -2,27 +2,179 @@ package helm
 
 import (
 	"github.com/stretchr/testify/suite"
+	"os"
+	"strings"
 	"testing"
 )
 
 type ConfigTestSuite struct {
 	suite.Suite
+	// These tests need to mutate the environment, so the suite.setenv and .unsetenv functions store the original contents of the
+	// relevant variable in this map. Its use of *string is so they can distinguish between "not set" and "set to empty string"
+	envBackup map[string]*string
 }
 
 func TestConfigTestSuite(t *testing.T) {
 	suite.Run(t, new(ConfigTestSuite))
 }
 
-func (suite *ConfigTestSuite) TestHelmCommandDecodeSuccess() {
+func (suite *ConfigTestSuite) TestNewConfigWithPluginPrefix() {
-	cmd := helmCommand("")
+	suite.unsetenv("PLUGIN_PREFIX")
-	err := cmd.Decode("upgrade")
+	suite.unsetenv("HELM_COMMAND")
-	suite.Require().Nil(err)
+	suite.unsetenv("UPDATE_DEPENDENCIES")
+	suite.unsetenv("DEBUG")
 
-	suite.EqualValues(cmd, "upgrade")
+	suite.setenv("PLUGIN_HELM_COMMAND", "execute order 66")
+	suite.setenv("PLUGIN_UPDATE_DEPENDENCIES", "true")
+	suite.setenv("PLUGIN_DEBUG", "true")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("execute order 66", cfg.Command)
+	suite.True(cfg.UpdateDependencies)
+	suite.True(cfg.Debug)
 }
 
-func (suite *ConfigTestSuite) TestHelmCommandDecodeFailure() {
+func (suite *ConfigTestSuite) TestNewConfigWithNoPrefix() {
-	cmd := helmCommand("")
+	suite.unsetenv("PLUGIN_PREFIX")
-	err := cmd.Decode("execute order 66")
+	suite.unsetenv("PLUGIN_HELM_COMMAND")
-	suite.EqualError(err, "unknown command 'execute order 66'. If specified, command must be upgrade, delete, lint, or help")
+	suite.unsetenv("PLUGIN_UPDATE_DEPENDENCIES")
+	suite.unsetenv("PLUGIN_DEBUG")
+
+	suite.setenv("HELM_COMMAND", "execute order 66")
+	suite.setenv("UPDATE_DEPENDENCIES", "true")
+	suite.setenv("DEBUG", "true")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("execute order 66", cfg.Command)
+	suite.True(cfg.UpdateDependencies)
+	suite.True(cfg.Debug)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigWithConfigurablePrefix() {
+	suite.unsetenv("API_SERVER")
+	suite.unsetenv("PLUGIN_API_SERVER")
+
+	suite.setenv("PLUGIN_PREFIX", "prix_fixe")
+	suite.setenv("PRIX_FIXE_API_SERVER", "your waiter this evening")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("prix_fixe", cfg.Prefix)
+	suite.Equal("your waiter this evening", cfg.APIServer)
+}
+
+func (suite *ConfigTestSuite) TestPrefixSettingDoesNotAffectPluginPrefix() {
+	suite.setenv("PLUGIN_PREFIX", "IXFREP")
+	suite.setenv("PLUGIN_HELM_COMMAND", "wake me up")
+	suite.setenv("IXFREP_PLUGIN_HELM_COMMAND", "send me to sleep inside")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("wake me up", cfg.Command)
+}
+
+func (suite *ConfigTestSuite) TestPrefixSettingMustHavePluginPrefix() {
+	suite.unsetenv("PLUGIN_PREFIX")
+	suite.setenv("PREFIX", "refpix")
+	suite.setenv("HELM_COMMAND", "gimme more")
+	suite.setenv("REFPIX_HELM_COMMAND", "gimme less")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("gimme more", cfg.Command)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigWithConflictingVariables() {
+	suite.setenv("PLUGIN_HELM_COMMAND", "execute order 66")
+	suite.setenv("HELM_COMMAND", "defend the jedi") // values from the `environment` block override those from `settings`
+
+	suite.setenv("PLUGIN_PREFIX", "prod")
+	suite.setenv("TIMEOUT", "5m0s")
+	suite.setenv("PROD_TIMEOUT", "2m30s") // values from prefixed env vars override those from non-prefixed ones
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("defend the jedi", cfg.Command)
+	suite.Equal("2m30s", cfg.Timeout)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigSetsWriters() {
+	stdout := &strings.Builder{}
+	stderr := &strings.Builder{}
+	cfg, err := NewConfig(stdout, stderr)
+	suite.Require().NoError(err)
+
+	suite.Equal(stdout, cfg.Stdout)
+	suite.Equal(stderr, cfg.Stderr)
+}
+
+func (suite *ConfigTestSuite) TestLogDebug() {
+	suite.setenv("DEBUG", "true")
+	suite.setenv("HELM_COMMAND", "upgrade")
+
+	stderr := strings.Builder{}
+	stdout := strings.Builder{}
+	_, err := NewConfig(&stdout, &stderr)
+	suite.Require().NoError(err)
+
+	suite.Equal("", stdout.String())
+
+	suite.Regexp(`^Generated config: \{Command:upgrade.*\}`, stderr.String())
+}
+
+func (suite *ConfigTestSuite) TestLogDebugCensorsKubeToken() {
+	stderr := &strings.Builder{}
+	kubeToken := "I'm shy! Don't put me in your build logs!"
+	cfg := Config{
+		Debug:     true,
+		KubeToken: kubeToken,
+		Stderr:    stderr,
+	}
+
+	cfg.logDebug()
+
+	suite.Contains(stderr.String(), "KubeToken:(redacted)")
+	suite.Equal(kubeToken, cfg.KubeToken) // The actual config value should be left unchanged
+}
+
+func (suite *ConfigTestSuite) setenv(key, val string) {
+	orig, ok := os.LookupEnv(key)
+	if ok {
+		suite.envBackup[key] = &orig
+	} else {
+		suite.envBackup[key] = nil
+	}
+	os.Setenv(key, val)
+}
+
+func (suite *ConfigTestSuite) unsetenv(key string) {
+	orig, ok := os.LookupEnv(key)
+	if ok {
+		suite.envBackup[key] = &orig
+	} else {
+		suite.envBackup[key] = nil
+	}
+	os.Unsetenv(key)
+}
+
+func (suite *ConfigTestSuite) BeforeTest(_, _ string) {
+	suite.envBackup = make(map[string]*string)
+}
+
+func (suite *ConfigTestSuite) AfterTest(_, _ string) {
+	for key, val := range suite.envBackup {
+		if val == nil {
+			os.Unsetenv(key)
+		} else {
+			os.Setenv(key, *val)
+		}
+	}
 }

internal/helm/plan.go

@@ -6,7 +6,10 @@ import (
 	"os"
 )
 
-const kubeConfigTemplate = "/root/.kube/config.tpl"
+const (
+	kubeConfigTemplate = "/root/.kube/config.tpl"
+	kubeConfigFile     = "/root/.kube/config"
+)
 
 // A Step is one step in the plan.
 type Step interface {
@@ -27,13 +30,12 @@ func NewPlan(cfg Config) (*Plan, error) {
 		cfg: cfg,
 		runCfg: run.Config{
 			Debug:        cfg.Debug,
-			KubeConfig:   cfg.KubeConfig,
 			Values:       cfg.Values,
 			StringValues: cfg.StringValues,
 			ValuesFiles:  cfg.ValuesFiles,
 			Namespace:    cfg.Namespace,
-			Stdout:       os.Stdout,
+			Stdout:       cfg.Stdout,
-			Stderr:       os.Stderr,
+			Stderr:       cfg.Stderr,
 		},
 	}
 
@@ -82,7 +84,7 @@ func determineSteps(cfg Config) *func(Config) []Step {
 func (p *Plan) Execute() error {
 	for i, step := range p.steps {
 		if p.cfg.Debug {
-			fmt.Fprintf(os.Stderr, "calling %T.Execute (step %d)\n", step, i)
+			fmt.Fprintf(p.cfg.Stderr, "calling %T.Execute (step %d)\n", step, i)
 		}
 
 		if err := step.Execute(p.runCfg); err != nil {
@@ -142,6 +144,7 @@ func initKube(cfg Config) []Step {
 			ServiceAccount: cfg.ServiceAccount,
 			Token:          cfg.KubeToken,
 			TemplateFile:   kubeConfigTemplate,
+			ConfigFile:     kubeConfigFile,
 		},
 	}
 }

internal/helm/plan_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"github.com/golang/mock/gomock"
 	"github.com/stretchr/testify/suite"
-	"os"
+	"strings"
 	"testing"
 
 	"github.com/pelotech/drone-helm3/internal/run"
@@ -29,25 +29,27 @@ func (suite *PlanTestSuite) TestNewPlan() {
 	}
 	defer func() { help = origHelp }()
 
+	stdout := strings.Builder{}
+	stderr := strings.Builder{}
 	cfg := Config{
 		Command:      "help",
 		Debug:        false,
-		KubeConfig:   "/branch/.sfere/profig",
 		Values:       "steadfastness,forthrightness",
 		StringValues: "tensile_strength,flexibility",
 		ValuesFiles:  []string{"/root/price_inventory.yml"},
 		Namespace:    "outer",
+		Stdout:       &stdout,
+		Stderr:       &stderr,
 	}
 
 	runCfg := run.Config{
 		Debug:        false,
-		KubeConfig:   "/branch/.sfere/profig",
 		Values:       "steadfastness,forthrightness",
 		StringValues: "tensile_strength,flexibility",
 		ValuesFiles:  []string{"/root/price_inventory.yml"},
 		Namespace:    "outer",
-		Stdout:       os.Stdout,
+		Stdout:       &stdout,
-		Stderr:       os.Stderr,
+		Stderr:       &stderr,
 	}
 
 	stepOne.EXPECT().
@@ -142,6 +144,7 @@ func (suite *PlanTestSuite) TestDel() {
 		ServiceAccount: "greathelm",
 		Token:          "b2YgbXkgYWZmZWN0aW9u",
 		TemplateFile:   kubeConfigTemplate,
+		ConfigFile:     kubeConfigFile,
 	}
 
 	suite.Equal(expected, init)
@@ -176,6 +179,7 @@ func (suite *PlanTestSuite) TestInitKube() {
 		ServiceAccount: "helmet",
 		Token:          "cXVlZXIgY2hhcmFjdGVyCg==",
 		TemplateFile:   kubeConfigTemplate,
+		ConfigFile:     kubeConfigFile,
 	}
 	suite.Equal(expected, init)
 }

internal/run/config.go

@@ -7,7 +7,6 @@ import (
 // Config contains configuration applicable to all helm commands
 type Config struct {
 	Debug        bool
-	KubeConfig   string
 	Values       string
 	StringValues string
 	ValuesFiles  []string

internal/run/initkube.go

@@ -16,6 +16,7 @@ type InitKube struct {
 	ServiceAccount string
 	Token          string
 	TemplateFile   string
+	ConfigFile     string
 
 	template   *template.Template
 	configFile io.WriteCloser
@@ -34,7 +35,7 @@ type kubeValues struct {
 // Execute generates a kubernetes config file from drone-helm3's template.
 func (i *InitKube) Execute(cfg Config) error {
 	if cfg.Debug {
-		fmt.Fprintf(cfg.Stderr, "writing kubeconfig file to %s\n", cfg.KubeConfig)
+		fmt.Fprintf(cfg.Stderr, "writing kubeconfig file to %s\n", i.ConfigFile)
 	}
 	defer i.configFile.Close()
 	return i.template.Execute(i.configFile, i.values)
@@ -73,16 +74,16 @@ func (i *InitKube) Prepare(cfg Config) error {
 	}
 
 	if cfg.Debug {
-		if _, err := os.Stat(cfg.KubeConfig); err != nil {
+		if _, err := os.Stat(i.ConfigFile); err != nil {
 			// non-nil err here isn't an actual error state; the kubeconfig just doesn't exist
 			fmt.Fprint(cfg.Stderr, "creating ")
 		} else {
 			fmt.Fprint(cfg.Stderr, "truncating ")
 		}
-		fmt.Fprintf(cfg.Stderr, "kubeconfig file at %s\n", cfg.KubeConfig)
+		fmt.Fprintf(cfg.Stderr, "kubeconfig file at %s\n", i.ConfigFile)
 	}
 
-	i.configFile, err = os.Create(cfg.KubeConfig)
+	i.configFile, err = os.Create(i.ConfigFile)
 	if err != nil {
 		return fmt.Errorf("could not open kubeconfig file for writing: %w", err)
 	}

internal/run/initkube_test.go

@@ -34,10 +34,10 @@ namespace: {{ .Namespace }}
 		Certificate:  "CCNA",
 		Token:        "Aspire virtual currency",
 		TemplateFile: templateFile.Name(),
+		ConfigFile:   configFile.Name(),
 	}
 	cfg := Config{
-		Namespace:  "Cisco",
+		Namespace: "Cisco",
-		KubeConfig: configFile.Name(),
 	}
 	err = init.Prepare(cfg)
 	suite.Require().Nil(err)
@@ -95,11 +95,10 @@ func (suite *InitKubeTestSuite) TestPrepareCannotOpenDestinationFile() {
 		Certificate:  "CCNA",
 		Token:        "Aspire virtual currency",
 		TemplateFile: templateFile.Name(),
+		ConfigFile:   "/usr/foreign/exclude/kubeprofig",
 	}
 
-	cfg := Config{
+	cfg := Config{}
-		KubeConfig: "/usr/foreign/exclude/kubeprofig",
-	}
 	err = init.Prepare(cfg)
 	suite.Error(err)
 	suite.Regexp("could not open .* for writing: .* no such file or directory", err)
@@ -120,11 +119,10 @@ func (suite *InitKubeTestSuite) TestPrepareRequiredConfig() {
 		Certificate:  "CCNA",
 		Token:        "Aspire virtual currency",
 		TemplateFile: templateFile.Name(),
+		ConfigFile:   configFile.Name(),
 	}
 
-	cfg := Config{
+	cfg := Config{}
-		KubeConfig: configFile.Name(),
-	}
 
 	suite.NoError(init.Prepare(cfg)) // consistency check; we should be starting in a happy state
 
@@ -150,11 +148,10 @@ func (suite *InitKubeTestSuite) TestPrepareDefaultsServiceAccount() {
 		Certificate:  "CCNA",
 		Token:        "Aspire virtual currency",
 		TemplateFile: templateFile.Name(),
+		ConfigFile:   configFile.Name(),
 	}
 
-	cfg := Config{
+	cfg := Config{}
-		KubeConfig: configFile.Name(),
-	}
 
 	init.Prepare(cfg)
 	suite.Equal("helm", init.ServiceAccount)

internal/run/uninstall.go

@@ -22,7 +22,7 @@ func (u *Uninstall) Prepare(cfg Config) error {
 		return fmt.Errorf("release is required")
 	}
 
-	args := []string{"--kubeconfig", cfg.KubeConfig}
+	args := make([]string, 0)
 
 	if cfg.Namespace != "" {
 		args = append(args, "--namespace", cfg.Namespace)

internal/run/uninstall_test.go

@@ -58,11 +58,9 @@ func (suite *UninstallTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	cfg := Config{
+	cfg := Config{}
-		KubeConfig: "/root/.kube/config",
-	}
 	suite.NoError(u.Prepare(cfg))
-	expected := []string{"--kubeconfig", "/root/.kube/config", "uninstall", "zayde_wølf_king"}
+	expected := []string{"uninstall", "zayde_wølf_king"}
 	suite.Equal(expected, actual)
 
 	u.Execute(cfg)
@@ -73,15 +71,13 @@ func (suite *UninstallTestSuite) TestPrepareDryRunFlag() {
 		Release: "firefox_ak_wildfire",
 		DryRun:  true,
 	}
-	cfg := Config{
+	cfg := Config{}
-		KubeConfig: "/root/.kube/config",
-	}
 
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
 	suite.NoError(u.Prepare(cfg))
-	expected := []string{"--kubeconfig", "/root/.kube/config", "uninstall", "--dry-run", "firefox_ak_wildfire"}
+	expected := []string{"uninstall", "--dry-run", "firefox_ak_wildfire"}
 	suite.Equal(expected, suite.actualArgs)
 }
 
@@ -90,16 +86,14 @@ func (suite *UninstallTestSuite) TestPrepareNamespaceFlag() {
 		Release: "carly_simon_run_away_with_me",
 	}
 	cfg := Config{
-		KubeConfig: "/root/.kube/config",
+		Namespace: "emotion",
-		Namespace:  "emotion",
 	}
 
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
 	suite.NoError(u.Prepare(cfg))
-	expected := []string{"--kubeconfig", "/root/.kube/config",
+	expected := []string{"--namespace", "emotion", "uninstall", "carly_simon_run_away_with_me"}
-		"--namespace", "emotion", "uninstall", "carly_simon_run_away_with_me"}
 	suite.Equal(expected, suite.actualArgs)
 }
 
@@ -109,9 +103,8 @@ func (suite *UninstallTestSuite) TestPrepareDebugFlag() {
 	}
 	stderr := strings.Builder{}
 	cfg := Config{
-		KubeConfig: "/root/.kube/config",
+		Debug:  true,
-		Debug:      true,
+		Stderr: &stderr,
-		Stderr:     &stderr,
 	}
 
 	command = func(path string, args ...string) cmd {
@@ -126,8 +119,8 @@ func (suite *UninstallTestSuite) TestPrepareDebugFlag() {
 	suite.mockCmd.EXPECT().Stderr(&stderr).AnyTimes()
 
 	suite.NoError(u.Prepare(cfg))
-	suite.Equal(fmt.Sprintf("Generated command: '%s --kubeconfig /root/.kube/config "+
+	suite.Equal(fmt.Sprintf("Generated command: '%s --debug "+
-		"--debug uninstall just_a_band_huff_and_puff'\n", helmBin), stderr.String())
+		"uninstall just_a_band_huff_and_puff'\n", helmBin), stderr.String())
 }
 
 func (suite *UninstallTestSuite) TestPrepareRequiresRelease() {

internal/run/upgrade.go

@@ -35,7 +35,7 @@ func (u *Upgrade) Prepare(cfg Config) error {
 		return fmt.Errorf("release is required")
 	}
 
-	args := []string{"--kubeconfig", cfg.KubeConfig}
+	args := make([]string, 0)
 
 	if cfg.Namespace != "" {
 		args = append(args, "--namespace", cfg.Namespace)

internal/run/upgrade_test.go

@@ -41,8 +41,7 @@ func (suite *UpgradeTestSuite) TestPrepareAndExecute() {
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
-		suite.Equal([]string{"--kubeconfig", "/root/.kube/config", "upgrade", "--install",
+		suite.Equal([]string{"upgrade", "--install", "jonas_brothers_only_human", "at40"}, args)
-			"jonas_brothers_only_human", "at40"}, args)
 
 		return suite.mockCmd
 	}
@@ -55,9 +54,7 @@ func (suite *UpgradeTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	cfg := Config{
+	cfg := Config{}
-		KubeConfig: "/root/.kube/config",
-	}
 	err := u.Prepare(cfg)
 	suite.Require().Nil(err)
 	u.Execute(cfg)
@@ -73,8 +70,7 @@ func (suite *UpgradeTestSuite) TestPrepareNamespaceFlag() {
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
-		suite.Equal([]string{"--kubeconfig", "/root/.kube/config", "--namespace", "melt", "upgrade",
+		suite.Equal([]string{"--namespace", "melt", "upgrade", "--install", "shaed_trampoline", "at40"}, args)
-			"--install", "shaed_trampoline", "at40"}, args)
 
 		return suite.mockCmd
 	}
@@ -83,8 +79,7 @@ func (suite *UpgradeTestSuite) TestPrepareNamespaceFlag() {
 	suite.mockCmd.EXPECT().Stderr(gomock.Any())
 
 	cfg := Config{
-		Namespace:  "melt",
+		Namespace: "melt",
-		KubeConfig: "/root/.kube/config",
 	}
 	err := u.Prepare(cfg)
 	suite.Require().Nil(err)
@@ -105,7 +100,6 @@ func (suite *UpgradeTestSuite) TestPrepareWithUpgradeFlags() {
 	}
 
 	cfg := Config{
-		KubeConfig:   "/root/.kube/config",
 		Values:       "age=35",
 		StringValues: "height=5ft10in",
 		ValuesFiles:  []string{"/usr/local/stats", "/usr/local/grades"},
@@ -113,7 +107,7 @@ func (suite *UpgradeTestSuite) TestPrepareWithUpgradeFlags() {
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
-		suite.Equal([]string{"--kubeconfig", "/root/.kube/config", "upgrade", "--install",
+		suite.Equal([]string{"upgrade", "--install",
 			"--version", "radio_edit",
 			"--dry-run",
 			"--wait",
@@ -165,10 +159,9 @@ func (suite *UpgradeTestSuite) TestPrepareDebugFlag() {
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
 	cfg := Config{
-		Debug:      true,
+		Debug:  true,
-		KubeConfig: "/root/.kube/config",
+		Stdout: &stdout,
-		Stdout:     &stdout,
+		Stderr: &stderr,
-		Stderr:     &stderr,
 	}
 
 	command = func(path string, args ...string) cmd {
@@ -186,7 +179,7 @@ func (suite *UpgradeTestSuite) TestPrepareDebugFlag() {
 
 	u.Prepare(cfg)
 
-	want := fmt.Sprintf("Generated command: '%s --kubeconfig /root/.kube/config --debug upgrade "+
+	want := fmt.Sprintf("Generated command: '%s --debug upgrade "+
 		"--install lewis_capaldi_someone_you_loved at40'\n", helmBin)
 	suite.Equal(want, stderr.String())
 	suite.Equal("", stdout.String())