Merge pull request #73 from pelotech/godiomaticity

More-idiomatic initialization of Steps

cmd/drone-helm/main.go

@@ -5,11 +5,12 @@ import (
 	"os"
 
 	_ "github.com/joho/godotenv/autoload"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/pelotech/drone-helm3/internal/helm"
 )
 
 func main() {
-	cfg, err := helm.NewConfig(os.Stdout, os.Stderr, os.Args...)
+	cfg, err := env.NewConfig(os.Stdout, os.Stderr)
 
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "%s\n", err.Error())

docs/parameter_reference.md

@@ -1,13 +1,14 @@
 # Parameter reference
 
 ## Global
-| Param name          | Type            | Purpose |
+| Param name          | Type            | Alias        | Purpose |
-|---------------------|-----------------|---------|
+|---------------------|-----------------|--------------|---------|
-| mode                | string          | Indicates the operation to perform. Recommended, but not required. Valid options are `upgrade`, `uninstall`, `lint`, and `help`. |
+| mode                | string          | helm_command | Indicates the operation to perform. Recommended, but not required. Valid options are `upgrade`, `uninstall`, `lint`, and `help`. |
-| update_dependencies | boolean         | Calls `helm dependency update` before running the main command.|
+| update_dependencies | boolean         |              | Calls `helm dependency update` before running the main command.|
-| add_repos           | list\<string\>  | Calls `helm repo add $repo` before running the main command. Each string should be formatted as `repo_name=https://repo.url/`. |
+| add_repos           | list\<string\>  | helm_repos   | Calls `helm repo add $repo` before running the main command. Each string should be formatted as `repo_name=https://repo.url/`. |
-| namespace           | string          | Kubernetes namespace to use for this operation. |
+| repo_ca_file        | string          |              | TLS certificate for a chart repository certificate authority. |
-| debug               | boolean         | Generate debug output within drone-helm3 and pass `--debug` to all helm commands. Use with care, since the debug output may include secrets. |
+| namespace           | string          |              | Kubernetes namespace to use for this operation. |
+| debug               | boolean         |              | Generate debug output within drone-helm3 and pass `--debug` to all helm commands. Use with care, since the debug output may include secrets. |
 
 ## Linting
 
@@ -25,43 +26,43 @@ Linting is only triggered when the `mode` setting is "lint".
 
 Installations are triggered when the `mode` setting is "upgrade." They can also be triggered when the build was triggered by a `push`, `tag`, `deployment`, `pull_request`, `promote`, or `rollback` Drone event.
 
-| Param name             | Type           | Required | Purpose |
+| Param name             | Type           | Required | Alias                  | Purpose |
-|------------------------|----------------|----------|---------|
+|------------------------|----------------|----------|------------------------|---------|
-| chart                  | string         | yes      | The chart to use for this installation. |
+| chart                  | string         | yes      |                        | The chart to use for this installation. |
-| release                | string         | yes      | The release name for helm to use. |
+| release                | string         | yes      |                        | The release name for helm to use. |
-| kube_api_server        | string         | yes      | API endpoint for the Kubernetes cluster. |
+| kube_api_server        | string         | yes      | api_server             | API endpoint for the Kubernetes cluster. |
-| kube_token             | string         | yes      | Token for authenticating to Kubernetes. |
+| kube_token             | string         | yes      | kubernetes_token       | Token for authenticating to Kubernetes. |
-| kube_service_account   | string         |          | Service account for authenticating to Kubernetes. Default is `helm`. |
+| kube_service_account   | string         |          | service_account        | Service account for authenticating to Kubernetes. Default is `helm`. |
-| kube_certificate       | string         |          | Base64 encoded TLS certificate used by the Kubernetes cluster's certificate authority. |
+| kube_certificate       | string         |          | kubernetes_certificate | Base64 encoded TLS certificate used by the Kubernetes cluster's certificate authority. |
-| chart_version          | string         |          | Specific chart version to install. |
+| chart_version          | string         |          |                        | Specific chart version to install. |
-| dry_run                | boolean        |          | Pass `--dry-run` to `helm upgrade`. |
+| dry_run                | boolean        |          |                        | Pass `--dry-run` to `helm upgrade`. |
-| wait_for_upgrade       | boolean        |          | Wait until kubernetes resources are in a ready state before marking the installation successful. |
+| wait_for_upgrade       | boolean        |          | wait                   | Wait until kubernetes resources are in a ready state before marking the installation successful. |
-| timeout                | duration       |          | Timeout for any *individual* Kubernetes operation. The installation's full runtime may exceed this duration. |
+| timeout                | duration       |          |                        | Timeout for any *individual* Kubernetes operation. The installation's full runtime may exceed this duration. |
-| force_upgrade          | boolean        |          | Pass `--force` to `helm upgrade`. |
+| force_upgrade          | boolean        |          | force                  | Pass `--force` to `helm upgrade`. |
-| atomic_upgrade         | boolean        |          | Pass `--atomic` to `helm upgrade`. |
+| atomic_upgrade         | boolean        |          |                        | Pass `--atomic` to `helm upgrade`. |
-| cleanup_failed_upgrade | boolean        |          | Pass `--cleanup-on-fail` to `helm upgrade`. |
+| cleanup_failed_upgrade | boolean        |          |                        | Pass `--cleanup-on-fail` to `helm upgrade`. |
-| values                 | list\<string\> |          | Chart values to use as the `--set` argument to `helm upgrade`. |
+| values                 | list\<string\> |          |                        | Chart values to use as the `--set` argument to `helm upgrade`. |
-| string_values          | list\<string\> |          | Chart values to use as the `--set-string` argument to `helm upgrade`. |
+| string_values          | list\<string\> |          |                        | Chart values to use as the `--set-string` argument to `helm upgrade`. |
-| values_files           | list\<string\> |          | Values to use as `--values` arguments to `helm upgrade`. |
+| values_files           | list\<string\> |          |                        | Values to use as `--values` arguments to `helm upgrade`. |
-| reuse_values           | boolean        |          | Reuse the values from a previous release. |
+| reuse_values           | boolean        |          |                        | Reuse the values from a previous release. |
-| skip_tls_verify        | boolean        |          | Connect to the Kubernetes cluster without checking for a valid TLS certificate. Not recommended in production. |
+| skip_tls_verify        | boolean        |          |                        | Connect to the Kubernetes cluster without checking for a valid TLS certificate. Not recommended in production. |
 
 ## Uninstallation
 
 Uninstallations are triggered when the `mode` setting is "uninstall" or "delete." They can also be triggered when the build was triggered by a `delete` Drone event.
 
-| Param name             | Type     | Required | Purpose |
+| Param name             | Type     | Required | Alias                  | Purpose |
-|------------------------|----------|----------|---------|
+|------------------------|----------|----------|------------------------|---------|
-| release                | string   | yes      | The release name for helm to use. |
+| release                | string   | yes      |                        | The release name for helm to use. |
-| kube_api_server        | string   | yes      | API endpoint for the Kubernetes cluster. |
+| kube_api_server        | string   | yes      | api_server             | API endpoint for the Kubernetes cluster. |
-| kube_token             | string   | yes      | Token for authenticating to Kubernetes. |
+| kube_token             | string   | yes      | kubernetes_token       | Token for authenticating to Kubernetes. |
-| kube_service_account   | string   |          | Service account for authenticating to Kubernetes. Default is `helm`. |
+| kube_service_account   | string   |          | service_account        | Service account for authenticating to Kubernetes. Default is `helm`. |
-| kube_certificate       | string   |          | Base64 encoded TLS certificate used by the Kubernetes cluster's certificate authority. |
+| kube_certificate       | string   |          | kubernetes_certificate | Base64 encoded TLS certificate used by the Kubernetes cluster's certificate authority. |
-| keep_history           | boolean  |          | Pass `--keep-history` to `helm uninstall`, to retain the release history. |
+| keep_history           | boolean  |          |                        | Pass `--keep-history` to `helm uninstall`, to retain the release history. |
-| dry_run                | boolean  |          | Pass `--dry-run` to `helm uninstall`. |
+| dry_run                | boolean  |          |                        | Pass `--dry-run` to `helm uninstall`. |
-| timeout                | duration |          | Timeout for any *individual* Kubernetes operation. The uninstallation's full runtime may exceed this duration. |
+| timeout                | duration |          |                        | Timeout for any *individual* Kubernetes operation. The uninstallation's full runtime may exceed this duration. |
-| skip_tls_verify        | boolean  |          | Connect to the Kubernetes cluster without checking for a valid TLS certificate. Not recommended in production. |
+| skip_tls_verify        | boolean  |          |                        | Connect to the Kubernetes cluster without checking for a valid TLS certificate. Not recommended in production. |
-| chart                  | string   |          | Required when the global `update_dependencies` parameter is true. No effect otherwise. |
+| chart                  | string   |          |                        | Required when the global `update_dependencies` parameter is true. No effect otherwise. |
 
 ### Where to put settings
 
@@ -92,3 +93,18 @@ Note that **list members must not contain commas**. Both of the following are eq
 values_files: [ "./over_9,000.yml" ]
 values_files: [ "./over_9", "000.yml" ]
 ```
+
+### Backward-compatibility aliases
+
+Some settings have alternate names, for backward-compatibility with drone-helm. We recommend using the canonical name unless you require the backward-compatible form.
+
+| Canonical name       | Alias |
+|----------------------|-------|
+| mode                 | helm_command |
+| add_repos            | helm_repos |
+| kube_api_server      | api_server |
+| kube_service_account | service_account |
+| kube_token           | kubernetes_token |
+| kube_certificate     | kubernetes_certificate |
+| wait_for_upgrade     | wait |
+| force_upgrade        | force |

go.mod

@@ -5,7 +5,9 @@ go 1.13
 require (
 	github.com/golang/mock v1.3.1
 	github.com/joho/godotenv v1.3.0
+	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/stretchr/testify v1.4.0
-	github.com/urfave/cli/v2 v2.1.1
+	golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f // indirect
+	golang.org/x/tools v0.0.0-20191209225234-22774f7dae43 // indirect
 	gopkg.in/yaml.v2 v2.2.2
 )

go.sum

@@ -1,30 +1,33 @@
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/golang/mock v1.3.1 h1:qGJ6qTW+x6xX/my+8YUVl4WNpX9B7+/l2tRsHGZ7f2s=
 github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
 github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
 github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
+github.com/kelseyhightower/envconfig v1.4.0 h1:Im6hONhd3pLkfDFsbRgu68RDNkGF1r3dvMUtDTo2cv8=
+github.com/kelseyhightower/envconfig v1.4.0/go.mod h1:cccZRl6mQpaq41TPp5QxidR+Sa3axMbJDNb//FQX6Gg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
-github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
-github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/urfave/cli/v2 v2.1.1 h1:Qt8FeAtxE/vfdrLmR3rxR6JRE0RoVmbXu8+6kZtYU4k=
-github.com/urfave/cli/v2 v2.1.1/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f h1:J5lckAjkw6qYlOZNj90mLYNTEKDvWeuc1yieZ8qUzUE=
+golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262 h1:qsl9y/CJx34tuA7QCPNp86JNJe4spst6Ff8MjvPUdPg=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f h1:kDxGY2VmgABOe55qheT/TFqUMtcTHnomIPS1iv3G4Ms=
+golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191206204035-259af5ff87bd h1:Zc7EU2PqpsNeIfOoVA7hvQX4cS3YDJEs5KlfatT3hLo=
+golang.org/x/tools v0.0.0-20191206204035-259af5ff87bd/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191209225234-22774f7dae43 h1:NfPq5mgc5ArFgVLCpeS4z07IoxSAqVfV/gQ5vxdgaxI=
+golang.org/x/tools v0.0.0-20191209225234-22774f7dae43/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=

internal/env/config.go

@@ -0,0 +1,126 @@
+package env
+
+import (
+	"fmt"
+	"github.com/kelseyhightower/envconfig"
+	"io"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	justNumbers    = regexp.MustCompile(`^\d+$`)
+	deprecatedVars = []string{"PURGE", "RECREATE_PODS", "TILLER_NS", "UPGRADE", "CANARY_IMAGE", "CLIENT_ONLY", "STABLE_REPO_URL"}
+)
+
+// 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 uppercased, but does
+// not have the `PLUGIN_` prefix.
+type Config struct {
+	// Configuration for drone-helm itself
+	Command            string   `envconfig:"mode"`                   // Helm command to run
+	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
+	AddRepos           []string `split_words:"true"`                 // Call `helm repo add` before the main command
+	RepoCAFile         string   `envconfig:"repo_ca_file"`           // CA certificate for `helm repo add`
+	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   `split_words:"true"`                 // 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:"kube_certificate"`       // The Kubernetes cluster CA's self-signed certificate (must be base64-encoded)
+	APIServer          string   `envconfig:"kube_api_server"`        // The Kubernetes cluster's API endpoint
+	ServiceAccount     string   `envconfig:"kube_service_account"`   // 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     `envconfig:"wait_for_upgrade"`       // Pass --wait to applicable helm commands
+	ReuseValues        bool     `split_words:"true"`                 // Pass --reuse-values to `helm upgrade`
+	KeepHistory        bool     `split_words:"true"`                 // Pass --keep-history to `helm uninstall`
+	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     `envconfig:"force_upgrade"`          // Pass --force to applicable helm commands
+	AtomicUpgrade      bool     `split_words:"true"`                 // Pass --atomic to `helm upgrade`
+	CleanupOnFail      bool     `envconfig:"cleanup_failed_upgrade"` // Pass --cleanup-on-fail to `helm upgrade`
+	LintStrictly       bool     `split_words:"true"`                 // Pass --strict to `helm lint`
+
+	Stdout io.Writer `ignored:"true"`
+	Stderr io.Writer `ignored:"true"`
+}
+
+// NewConfig creates a Config and reads environment variables into it, accounting for several possible formats.
+func NewConfig(stdout, stderr io.Writer) (*Config, error) {
+	var aliases settingAliases
+	if err := envconfig.Process("plugin", &aliases); err != nil {
+		return nil, err
+	}
+
+	if err := envconfig.Process("", &aliases); err != nil {
+		return nil, err
+	}
+
+	cfg := Config{
+		Command:        aliases.Command,
+		AddRepos:       aliases.AddRepos,
+		APIServer:      aliases.APIServer,
+		ServiceAccount: aliases.ServiceAccount,
+		Wait:           aliases.Wait,
+		Force:          aliases.Force,
+		KubeToken:      aliases.KubeToken,
+		Certificate:    aliases.Certificate,
+
+		Stdout: stdout,
+		Stderr: stderr,
+	}
+	if err := envconfig.Process("plugin", &cfg); err != nil {
+		return nil, err
+	}
+
+	if err := envconfig.Process("", &cfg); err != nil {
+		return nil, err
+	}
+
+	if justNumbers.MatchString(cfg.Timeout) {
+		cfg.Timeout = fmt.Sprintf("%ss", cfg.Timeout)
+	}
+
+	if cfg.Debug && cfg.Stderr != nil {
+		cfg.logDebug()
+	}
+
+	cfg.deprecationWarn()
+
+	return &cfg, nil
+}
+
+func (cfg Config) logDebug() {
+	if cfg.KubeToken != "" {
+		cfg.KubeToken = "(redacted)"
+	}
+	fmt.Fprintf(cfg.Stderr, "Generated config: %+v\n", cfg)
+}
+
+func (cfg *Config) deprecationWarn() {
+	for _, varname := range deprecatedVars {
+		_, barePresent := os.LookupEnv(varname)
+		_, prefixedPresent := os.LookupEnv("PLUGIN_" + varname)
+		if barePresent || prefixedPresent {
+			fmt.Fprintf(cfg.Stderr, "Warning: ignoring deprecated '%s' setting\n", strings.ToLower(varname))
+		}
+	}
+}
+
+type settingAliases struct {
+	Command        string   `envconfig:"helm_command"`
+	AddRepos       []string `envconfig:"helm_repos"`
+	APIServer      string   `envconfig:"api_server"`
+	ServiceAccount string   `split_words:"true"`
+	Wait           bool     ``
+	Force          bool     ``
+	KubeToken      string   `envconfig:"kubernetes_token"`
+	Certificate    string   `envconfig:"kubernetes_certificate"`
+}

internal/env/config_test.go

@@ -0,0 +1,218 @@
+package env
+
+import (
+	"fmt"
+	"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) TestNewConfigWithPluginPrefix() {
+	suite.unsetenv("MODE")
+	suite.unsetenv("UPDATE_DEPENDENCIES")
+	suite.unsetenv("DEBUG")
+
+	suite.setenv("PLUGIN_MODE", "iambic")
+	suite.setenv("PLUGIN_UPDATE_DEPENDENCIES", "true")
+	suite.setenv("PLUGIN_DEBUG", "true")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("iambic", cfg.Command)
+	suite.True(cfg.UpdateDependencies)
+	suite.True(cfg.Debug)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigWithNoPrefix() {
+	suite.unsetenv("PLUGIN_MODE")
+	suite.unsetenv("PLUGIN_UPDATE_DEPENDENCIES")
+	suite.unsetenv("PLUGIN_DEBUG")
+
+	suite.setenv("MODE", "iambic")
+	suite.setenv("UPDATE_DEPENDENCIES", "true")
+	suite.setenv("DEBUG", "true")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("iambic", cfg.Command)
+	suite.True(cfg.UpdateDependencies)
+	suite.True(cfg.Debug)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigWithConflictingVariables() {
+	suite.setenv("PLUGIN_MODE", "iambic")
+	suite.setenv("MODE", "haiku") // values from the `environment` block override those from `settings`
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+
+	suite.Equal("haiku", cfg.Command)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigInfersNumbersAreSeconds() {
+	suite.setenv("PLUGIN_TIMEOUT", "42")
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+	suite.Equal("42s", cfg.Timeout)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigWithAliases() {
+	for _, varname := range []string{
+		"MODE",
+		"ADD_REPOS",
+		"KUBE_API_SERVER",
+		"KUBE_SERVICE_ACCOUNT",
+		"WAIT_FOR_UPGRADE",
+		"FORCE_UPGRADE",
+		"KUBE_TOKEN",
+		"KUBE_CERTIFICATE",
+	} {
+		suite.unsetenv(varname)
+		suite.unsetenv("PLUGIN_" + varname)
+	}
+	suite.setenv("PLUGIN_HELM_COMMAND", "beware the jabberwock")
+	suite.setenv("PLUGIN_HELM_REPOS", "chortle=http://calloo.callay/frabjous/day")
+	suite.setenv("PLUGIN_API_SERVER", "http://tumtum.tree")
+	suite.setenv("PLUGIN_SERVICE_ACCOUNT", "tulgey")
+	suite.setenv("PLUGIN_WAIT", "true")
+	suite.setenv("PLUGIN_FORCE", "true")
+	suite.setenv("PLUGIN_KUBERNETES_TOKEN", "Y29tZSB0byBteSBhcm1z")
+	suite.setenv("PLUGIN_KUBERNETES_CERTIFICATE", "d2l0aCBpdHMgaGVhZA==")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+	suite.Equal("beware the jabberwock", cfg.Command)
+	suite.Equal([]string{"chortle=http://calloo.callay/frabjous/day"}, cfg.AddRepos)
+	suite.Equal("http://tumtum.tree", cfg.APIServer)
+	suite.Equal("tulgey", cfg.ServiceAccount)
+	suite.True(cfg.Wait, "Wait should be aliased")
+	suite.True(cfg.Force, "Force should be aliased")
+	suite.Equal("Y29tZSB0byBteSBhcm1z", cfg.KubeToken, "KubeToken should be aliased")
+	suite.Equal("d2l0aCBpdHMgaGVhZA==", cfg.Certificate, "Certificate should be aliased")
+}
+
+func (suite *ConfigTestSuite) TestAliasedSettingWithoutPluginPrefix() {
+	suite.unsetenv("FORCE_UPGRADE")
+	suite.unsetenv("PLUGIN_FORCE_UPGRADE")
+	suite.unsetenv("PLUGIN_FORCE")
+	suite.setenv("FORCE", "true")
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.Require().NoError(err)
+	suite.True(cfg.Force)
+}
+
+func (suite *ConfigTestSuite) TestNewConfigWithAliasConflicts() {
+	suite.unsetenv("FORCE_UPGRADE")
+	suite.setenv("PLUGIN_FORCE", "true")
+	suite.setenv("PLUGIN_FORCE_UPGRADE", "false") // should override even when set to the zero value
+
+	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
+	suite.NoError(err)
+	suite.False(cfg.Force, "official names should override alias names")
+}
+
+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) TestDeprecatedSettingWarnings() {
+	for _, varname := range deprecatedVars {
+		suite.setenv(varname, "deprecoat") // environment-block entries should cause warnings
+	}
+
+	suite.unsetenv("PURGE")
+	suite.setenv("PLUGIN_PURGE", "true") // settings-block entries should cause warnings
+	suite.setenv("UPGRADE", "")          // entries should cause warnings even when set to empty string
+
+	stderr := &strings.Builder{}
+	_, err := NewConfig(&strings.Builder{}, stderr)
+	suite.NoError(err)
+
+	for _, varname := range deprecatedVars {
+		suite.Contains(stderr.String(), fmt.Sprintf("Warning: ignoring deprecated '%s' setting\n", strings.ToLower(varname)))
+	}
+}
+
+func (suite *ConfigTestSuite) TestLogDebug() {
+	suite.setenv("DEBUG", "true")
+	suite.setenv("MODE", "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/config.go

@@ -1,237 +0,0 @@
-package helm
-
-import (
-	"fmt"
-	"github.com/urfave/cli/v2"
-	"io"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	justNumbers    = regexp.MustCompile(`^\d+$`)
-	deprecatedVars = []string{"PURGE", "RECREATE_PODS", "TILLER_NS", "UPGRADE", "CANARY_IMAGE", "CLIENT_ONLY", "STABLE_REPO_URL"}
-)
-
-// 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 uppercased, but does
-// not have the `PLUGIN_` prefix.
-type Config struct {
-	// Configuration for drone-helm itself
-	Command            string   // Helm command to run
-	DroneEvent         string   // Drone event that invoked this plugin.
-	UpdateDependencies bool     // Call `helm dependency update` before the main command
-	AddRepos           []string // Call `helm repo add` before the main command
-	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   // Argument to pass to --set-string in applicable helm commands
-	ValuesFiles        []string // Arguments to pass to --values in applicable helm commands
-	Namespace          string   // Kubernetes namespace for all helm commands
-	KubeToken          string   // Kubernetes authentication token to put in .kube/config
-	SkipTLSVerify      bool     // Put insecure-skip-tls-verify in .kube/config
-	Certificate        string   // The Kubernetes cluster CA's self-signed certificate (must be base64-encoded)
-	APIServer          string   // The Kubernetes cluster's API endpoint
-	ServiceAccount     string   // Account to use for connecting to the Kubernetes cluster
-	ChartVersion       string   // Specific chart version to use in `helm upgrade`
-	DryRun             bool     // Pass --dry-run to applicable helm commands
-	Wait               bool     // Pass --wait to applicable helm commands
-	ReuseValues        bool     // Pass --reuse-values to `helm upgrade`
-	KeepHistory        bool     // Pass --keep-history to `helm uninstall`
-	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
-	AtomicUpgrade      bool     // Pass --atomic to `helm upgrade`
-	CleanupOnFail      bool     // Pass --cleanup-on-fail to `helm upgrade`
-	LintStrictly       bool     // Pass --strict to `helm lint`
-
-	Stdout io.Writer
-	Stderr io.Writer
-}
-
-// NewConfig creates a Config and reads environment variables into it, accounting for several possible formats.
-func NewConfig(stdout, stderr io.Writer, argv ...string) (*Config, error) {
-	cfg := Config{
-		Stdout: stdout,
-		Stderr: stderr,
-	}
-	// cli doesn't support Destination for string slices, so we'll use bare
-	// strings as an intermediate value and split them on commas ourselves.
-	var addRepos, valuesFiles string
-	app := &cli.App{
-		Name:   "drone-helm3",
-		Action: func(*cli.Context) error { return nil },
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:        "mode",
-				Destination: &cfg.Command,
-				EnvVars:     []string{"MODE", "PLUGIN_MODE", "HELM_COMMAND", "PLUGIN_HELM_COMMAND"},
-			},
-			&cli.StringFlag{
-				Name:        "drone-event",
-				Destination: &cfg.DroneEvent,
-				EnvVars:     []string{"DRONE_BUILD_EVENT"},
-			},
-			&cli.BoolFlag{
-				Name:        "update-dependencies",
-				Destination: &cfg.UpdateDependencies,
-				EnvVars:     []string{"UPDATE_DEPENDENCIES", "PLUGIN_UPDATE_DEPENDENCIES"},
-			},
-			&cli.StringFlag{
-				Name:        "add-repos",
-				Destination: &addRepos,
-				EnvVars:     []string{"ADD_REPOS", "PLUGIN_ADD_REPOS", "HELM_REPOS", "PLUGIN_HELM_REPOS"},
-			},
-			&cli.BoolFlag{
-				Name:        "debug",
-				Destination: &cfg.Debug,
-				EnvVars:     []string{"DEBUG", "PLUGIN_DEBUG"},
-			},
-			&cli.StringFlag{
-				Name:        "values",
-				Destination: &cfg.Values,
-				EnvVars:     []string{"VALUES", "PLUGIN_VALUES"},
-			},
-			&cli.StringFlag{
-				Name:        "string-values",
-				Destination: &cfg.StringValues,
-				EnvVars:     []string{"STRING_VALUES", "PLUGIN_STRING_VALUES"},
-			},
-			&cli.StringFlag{
-				Name:        "values-files",
-				Destination: &valuesFiles,
-				EnvVars:     []string{"VALUES_FILES", "PLUGIN_VALUES_FILES"},
-			},
-			&cli.StringFlag{
-				Name:        "namespace",
-				Destination: &cfg.Namespace,
-				EnvVars:     []string{"NAMESPACE", "PLUGIN_NAMESPACE"},
-			},
-			&cli.StringFlag{
-				Name:        "kube-token",
-				Destination: &cfg.KubeToken,
-				EnvVars:     []string{"KUBE_TOKEN", "PLUGIN_KUBE_TOKEN", "KUBERNETES_TOKEN", "PLUGIN_KUBERNETES_TOKEN"},
-			},
-			&cli.BoolFlag{
-				Name:        "skip-tls-verify",
-				Destination: &cfg.SkipTLSVerify,
-				EnvVars:     []string{"SKIP_TLS_VERIFY", "PLUGIN_SKIP_TLS_VERIFY"},
-			},
-			&cli.StringFlag{
-				Name:        "kube-certificate",
-				Destination: &cfg.Certificate,
-				EnvVars:     []string{"KUBE_CERTIFICATE", "PLUGIN_KUBE_CERTIFICATE", "KUBERNETES_CERTIFICATE", "PLUGIN_KUBERNETES_CERTIFICATE"},
-			},
-			&cli.StringFlag{
-				Name:        "kube-api-server",
-				Destination: &cfg.APIServer,
-				EnvVars:     []string{"KUBE_API_SERVER", "PLUGIN_KUBE_API_SERVER", "API_SERVER", "PLUGIN_API_SERVER"},
-			},
-			&cli.StringFlag{
-				Name:        "service-account",
-				Destination: &cfg.ServiceAccount,
-				EnvVars:     []string{"KUBE_SERVICE_ACCOUNT", "PLUGIN_KUBE_SERVICE_ACCOUNT", "SERVICE_ACCOUNT", "PLUGIN_SERVICE_ACCOUNT"},
-			},
-			&cli.StringFlag{
-				Name:        "chart-version",
-				Destination: &cfg.ChartVersion,
-				EnvVars:     []string{"CHART_VERSION", "PLUGIN_CHART_VERSION"},
-			},
-			&cli.BoolFlag{
-				Name:        "dry-run",
-				Destination: &cfg.DryRun,
-				EnvVars:     []string{"DRY_RUN", "PLUGIN_DRY_RUN"},
-			},
-			&cli.BoolFlag{
-				Name:        "wait-for-upgrade",
-				Destination: &cfg.Wait,
-				EnvVars:     []string{"WAIT_FOR_UPGRADE", "PLUGIN_WAIT_FOR_UPGRADE", "WAIT", "PLUGIN_WAIT"},
-			},
-			&cli.BoolFlag{
-				Name:        "reuse-values",
-				Destination: &cfg.ReuseValues,
-				EnvVars:     []string{"REUSE_VALUES", "PLUGIN_REUSE_VALUES"},
-			},
-			&cli.BoolFlag{
-				Name:        "keep-history",
-				Destination: &cfg.KeepHistory,
-				EnvVars:     []string{"KEEP_HISTORY", "PLUGIN_KEEP_HISTORY"},
-			},
-			&cli.StringFlag{
-				Name:        "timeout",
-				Destination: &cfg.Timeout,
-				EnvVars:     []string{"TIMEOUT", "PLUGIN_TIMEOUT"},
-			},
-			&cli.StringFlag{
-				Name:        "chart",
-				Destination: &cfg.Chart,
-				EnvVars:     []string{"CHART", "PLUGIN_CHART"},
-			},
-			&cli.StringFlag{
-				Name:        "release",
-				Destination: &cfg.Release,
-				EnvVars:     []string{"RELEASE", "PLUGIN_RELEASE"},
-			},
-			&cli.BoolFlag{
-				Name:        "force-upgrade",
-				Destination: &cfg.Force,
-				EnvVars:     []string{"FORCE_UPGRADE", "PLUGIN_FORCE_UPGRADE", "FORCE", "PLUGIN_FORCE"},
-			},
-			&cli.BoolFlag{
-				Name:        "atomic-upgrade",
-				Destination: &cfg.AtomicUpgrade,
-				EnvVars:     []string{"ATOMIC_UPGRADE", "PLUGIN_ATOMIC_UPGRADE"},
-			},
-			&cli.BoolFlag{
-				Name:        "cleanup-failed-upgrade",
-				Destination: &cfg.CleanupOnFail,
-				EnvVars:     []string{"CLEANUP_FAILED_UPGRADE", "PLUGIN_CLEANUP_FAILED_UPGRADE"},
-			},
-			&cli.BoolFlag{
-				Name:        "lint-strictly",
-				Destination: &cfg.LintStrictly,
-				EnvVars:     []string{"LINT_STRICTLY", "PLUGIN_LINT_STRICTLY"},
-			},
-		},
-	}
-	if err := app.Run(argv); err != nil {
-		return nil, err
-	}
-	if addRepos != "" {
-		cfg.AddRepos = strings.Split(addRepos, ",")
-	}
-	if valuesFiles != "" {
-		cfg.ValuesFiles = strings.Split(valuesFiles, ",")
-	}
-
-	if justNumbers.MatchString(cfg.Timeout) {
-		cfg.Timeout = fmt.Sprintf("%ss", cfg.Timeout)
-	}
-
-	if cfg.Debug && cfg.Stderr != nil {
-		cfg.logDebug()
-	}
-
-	cfg.deprecationWarn()
-
-	return &cfg, nil
-}
-
-func (cfg Config) logDebug() {
-	if cfg.KubeToken != "" {
-		cfg.KubeToken = "(redacted)"
-	}
-	fmt.Fprintf(cfg.Stderr, "Generated config: %+v\n", cfg)
-}
-
-func (cfg *Config) deprecationWarn() {
-	for _, varname := range deprecatedVars {
-		_, barePresent := os.LookupEnv(varname)
-		_, prefixedPresent := os.LookupEnv("PLUGIN_" + varname)
-		if barePresent || prefixedPresent {
-			fmt.Fprintf(cfg.Stderr, "Warning: ignoring deprecated '%s' setting\n", strings.ToLower(varname))
-		}
-	}
-}

internal/helm/config_test.go

@@ -1,410 +0,0 @@
-package helm
-
-import (
-	"fmt"
-	"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) TestNewConfigWithPluginPrefix() {
-	stdout := strings.Builder{}
-	stderr := strings.Builder{}
-	for _, varname := range []string{
-		"MODE",
-		"DRONE_BUILD_EVENT",
-		"HELM_COMMAND",
-		"PLUGIN_HELM_COMMAND",
-		"UPDATE_DEPENDENCIES",
-		"ADD_REPOS",
-		"HELM_REPOS",
-		"PLUGIN_HELM_REPOS",
-		"DEBUG",
-		"VALUES",
-		"STRING_VALUES",
-		"VALUES_FILES",
-		"NAMESPACE",
-		"KUBE_TOKEN",
-		"KUBERNETES_TOKEN",
-		"PLUGIN_KUBERNETES_TOKEN",
-		"SKIP_TLS_VERIFY",
-		"KUBE_CERTIFICATE",
-		"KUBERNETES_CERTIFICATE",
-		"PLUGIN_KUBERNETES_CERTIFICATE",
-		"KUBE_API_SERVER",
-		"API_SERVER",
-		"PLUGIN_API_SERVER",
-		"KUBE_SERVICE_ACCOUNT",
-		"SERVICE_ACCOUNT",
-		"PLUGIN_SERVICE_ACCOUNT",
-		"CHART_VERSION",
-		"DRY_RUN",
-		"WAIT_FOR_UPGRADE",
-		"WAIT",
-		"PLUGIN_WAIT",
-		"REUSE_VALUES",
-		"KEEP_HISTORY",
-		"TIMEOUT",
-		"CHART",
-		"RELEASE",
-		"FORCE",
-		"FORCE_UPGRADE",
-		"PLUGIN_FORCE_UPGRADE",
-		"ATOMIC_UPGRADE",
-		"CLEANUP_FAILED_UPGRADE",
-		"LINT_STRICTLY",
-	} {
-		suite.unsetenv(varname)
-	}
-
-	suite.setenv("PLUGIN_MODE", "upgrade")
-	suite.setenv("PLUGIN_UPDATE_DEPENDENCIES", "true")
-	suite.setenv("PLUGIN_ADD_REPOS", "foo=http://bar,goo=http://baz")
-	suite.setenv("PLUGIN_DEBUG", "true")
-	suite.setenv("PLUGIN_VALUES", "dog=husky")
-	suite.setenv("PLUGIN_STRING_VALUES", "version=1.0")
-	suite.setenv("PLUGIN_VALUES_FILES", "underrides.yml,overrides.yml")
-	suite.setenv("PLUGIN_NAMESPACE", "myapp")
-	suite.setenv("PLUGIN_KUBE_TOKEN", "cGxlYXNlIHNpciwgbGV0IG1lIGlu")
-	suite.setenv("PLUGIN_SKIP_TLS_VERIFY", "true")
-	suite.setenv("PLUGIN_KUBE_CERTIFICATE", "SSBhbSB0b3RhbGx5IHRoZSBzZXJ2ZXIgeW91IHdhbnQ=")
-	suite.setenv("PLUGIN_KUBE_API_SERVER", "http://my.kube/cluster")
-	suite.setenv("PLUGIN_KUBE_SERVICE_ACCOUNT", "deploybot")
-	suite.setenv("PLUGIN_CHART_VERSION", "six")
-	suite.setenv("PLUGIN_DRY_RUN", "true")
-	suite.setenv("PLUGIN_WAIT_FOR_UPGRADE", "true")
-	suite.setenv("PLUGIN_REUSE_VALUES", "true")
-	suite.setenv("PLUGIN_KEEP_HISTORY", "true")
-	suite.setenv("PLUGIN_TIMEOUT", "5m20s")
-	suite.setenv("PLUGIN_CHART", "./helm/myapp/")
-	suite.setenv("PLUGIN_RELEASE", "my_app")
-	suite.setenv("PLUGIN_FORCE_UPGRADE", "true")
-	suite.setenv("PLUGIN_ATOMIC_UPGRADE", "true")
-	suite.setenv("PLUGIN_CLEANUP_FAILED_UPGRADE", "true")
-	suite.setenv("PLUGIN_LINT_STRICTLY", "true")
-
-	cfg, err := NewConfig(&stdout, &stderr, "test")
-	suite.Require().NoError(err)
-
-	want := Config{
-		Command:            "upgrade",
-		DroneEvent:         "",
-		UpdateDependencies: true,
-		AddRepos:           []string{"foo=http://bar", "goo=http://baz"},
-		Debug:              true,
-		Values:             "dog=husky",
-		StringValues:       "version=1.0",
-		ValuesFiles:        []string{"underrides.yml", "overrides.yml"},
-		Namespace:          "myapp",
-		KubeToken:          "cGxlYXNlIHNpciwgbGV0IG1lIGlu",
-		SkipTLSVerify:      true,
-		Certificate:        "SSBhbSB0b3RhbGx5IHRoZSBzZXJ2ZXIgeW91IHdhbnQ=",
-		APIServer:          "http://my.kube/cluster",
-		ServiceAccount:     "deploybot",
-		ChartVersion:       "six",
-		DryRun:             true,
-		Wait:               true,
-		ReuseValues:        true,
-		KeepHistory:        true,
-		Timeout:            "5m20s",
-		Chart:              "./helm/myapp/",
-		Release:            "my_app",
-		Force:              true,
-		AtomicUpgrade:      true,
-		CleanupOnFail:      true,
-		LintStrictly:       true,
-		Stdout:             &stdout,
-		Stderr:             &stderr,
-	}
-
-	suite.Equal(&want, cfg)
-}
-
-func (suite *ConfigTestSuite) TestNewConfigWithNoPrefix() {
-	stdout := strings.Builder{}
-	stderr := strings.Builder{}
-	for _, varname := range []string{
-		"PLUGIN_MODE",
-		"PLUGIN_HELM_COMMAND",
-		"HELM_COMMAND",
-		"PLUGIN_UPDATE_DEPENDENCIES",
-		"PLUGIN_ADD_REPOS",
-		"PLUGIN_HELM_REPOS",
-		"HELM_REPOS",
-		"PLUGIN_DEBUG",
-		"PLUGIN_VALUES",
-		"PLUGIN_STRING_VALUES",
-		"PLUGIN_VALUES_FILES",
-		"PLUGIN_NAMESPACE",
-		"PLUGIN_KUBE_TOKEN",
-		"PLUGIN_KUBERNETES_TOKEN",
-		"KUBERNETES_TOKEN",
-		"PLUGIN_SKIP_TLS_VERIFY",
-		"PLUGIN_KUBE_CERTIFICATE",
-		"PLUGIN_KUBERNETES_CERTIFICATE",
-		"KUBERNETES_CERTIFICATE",
-		"PLUGIN_KUBE_API_SERVER",
-		"PLUGIN_API_SERVER",
-		"API_SERVER",
-		"PLUGIN_KUBE_SERVICE_ACCOUNT",
-		"PLUGIN_SERVICE_ACCOUNT",
-		"SERVICE_ACCOUNT",
-		"PLUGIN_CHART_VERSION",
-		"PLUGIN_DRY_RUN",
-		"PLUGIN_WAIT_FOR_UPGRADE",
-		"PLUGIN_WAIT",
-		"WAIT",
-		"PLUGIN_REUSE_VALUES",
-		"PLUGIN_KEEP_HISTORY",
-		"PLUGIN_TIMEOUT",
-		"PLUGIN_CHART",
-		"PLUGIN_RELEASE",
-		"PLUGIN_FORCE",
-		"PLUGIN_FORCE_UPGRADE",
-		"FORCE_UPGRADE",
-		"PLUGIN_ATOMIC_UPGRADE",
-		"PLUGIN_CLEANUP_FAILED_UPGRADE",
-		"PLUGIN_LINT_STRICTLY",
-	} {
-		suite.unsetenv(varname)
-	}
-
-	suite.setenv("MODE", "upgrade")
-	suite.setenv("DRONE_BUILD_EVENT", "tag")
-	suite.setenv("UPDATE_DEPENDENCIES", "true")
-	suite.setenv("ADD_REPOS", "foo=http://bar,goo=http://baz")
-	suite.setenv("DEBUG", "true")
-	suite.setenv("VALUES", "dog=husky")
-	suite.setenv("STRING_VALUES", "version=1.0")
-	suite.setenv("VALUES_FILES", "underrides.yml,overrides.yml")
-	suite.setenv("NAMESPACE", "myapp")
-	suite.setenv("KUBE_TOKEN", "cGxlYXNlIHNpciwgbGV0IG1lIGlu")
-	suite.setenv("SKIP_TLS_VERIFY", "true")
-	suite.setenv("KUBE_CERTIFICATE", "SSBhbSB0b3RhbGx5IHRoZSBzZXJ2ZXIgeW91IHdhbnQ=")
-	suite.setenv("KUBE_API_SERVER", "http://my.kube/cluster")
-	suite.setenv("KUBE_SERVICE_ACCOUNT", "deploybot")
-	suite.setenv("CHART_VERSION", "six")
-	suite.setenv("DRY_RUN", "true")
-	suite.setenv("WAIT_FOR_UPGRADE", "true")
-	suite.setenv("REUSE_VALUES", "true")
-	suite.setenv("KEEP_HISTORY", "true")
-	suite.setenv("TIMEOUT", "5m20s")
-	suite.setenv("CHART", "./helm/myapp/")
-	suite.setenv("RELEASE", "my_app")
-	suite.setenv("FORCE_UPGRADE", "true")
-	suite.setenv("ATOMIC_UPGRADE", "true")
-	suite.setenv("CLEANUP_FAILED_UPGRADE", "true")
-	suite.setenv("LINT_STRICTLY", "true")
-
-	cfg, err := NewConfig(&stdout, &stderr, "test")
-	suite.Require().NoError(err)
-
-	want := Config{
-		Command:            "upgrade",
-		DroneEvent:         "tag",
-		UpdateDependencies: true,
-		AddRepos:           []string{"foo=http://bar", "goo=http://baz"},
-		Debug:              true,
-		Values:             "dog=husky",
-		StringValues:       "version=1.0",
-		ValuesFiles:        []string{"underrides.yml", "overrides.yml"},
-		Namespace:          "myapp",
-		KubeToken:          "cGxlYXNlIHNpciwgbGV0IG1lIGlu",
-		SkipTLSVerify:      true,
-		Certificate:        "SSBhbSB0b3RhbGx5IHRoZSBzZXJ2ZXIgeW91IHdhbnQ=",
-		APIServer:          "http://my.kube/cluster",
-		ServiceAccount:     "deploybot",
-		ChartVersion:       "six",
-		DryRun:             true,
-		Wait:               true,
-		ReuseValues:        true,
-		KeepHistory:        true,
-		Timeout:            "5m20s",
-		Chart:              "./helm/myapp/",
-		Release:            "my_app",
-		Force:              true,
-		AtomicUpgrade:      true,
-		CleanupOnFail:      true,
-		LintStrictly:       true,
-		Stdout:             &stdout,
-		Stderr:             &stderr,
-	}
-
-	suite.Equal(&want, cfg)
-}
-
-func (suite *ConfigTestSuite) TestNewConfigWithConflictingVariables() {
-	suite.setenv("PLUGIN_MODE", "iambic")
-	suite.setenv("MODE", "haiku") // values from the `environment` block override those from `settings`
-
-	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{}, "test")
-	suite.Require().NoError(err)
-
-	suite.Equal("haiku", cfg.Command)
-}
-
-func (suite *ConfigTestSuite) TestNewConfigInfersNumbersAreSeconds() {
-	suite.setenv("PLUGIN_TIMEOUT", "42")
-	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{}, "test")
-	suite.Require().NoError(err)
-	suite.Equal("42s", cfg.Timeout)
-}
-
-func (suite *ConfigTestSuite) TestNewConfigWithAliases() {
-	for _, varname := range []string{
-		"MODE",
-		"ADD_REPOS",
-		"KUBE_API_SERVER",
-		"KUBE_SERVICE_ACCOUNT",
-		"WAIT_FOR_UPGRADE",
-		"FORCE_UPGRADE",
-		"KUBE_TOKEN",
-		"KUBE_CERTIFICATE",
-	} {
-		suite.unsetenv(varname)
-		suite.unsetenv("PLUGIN_" + varname)
-	}
-	suite.setenv("PLUGIN_HELM_COMMAND", "beware the jabberwock")
-	suite.setenv("PLUGIN_HELM_REPOS", "chortle=http://calloo.callay/frabjous/day")
-	suite.setenv("PLUGIN_API_SERVER", "http://tumtum.tree")
-	suite.setenv("PLUGIN_SERVICE_ACCOUNT", "tulgey")
-	suite.setenv("PLUGIN_WAIT", "true")
-	suite.setenv("PLUGIN_FORCE", "true")
-	suite.setenv("PLUGIN_KUBERNETES_TOKEN", "Y29tZSB0byBteSBhcm1z")
-	suite.setenv("PLUGIN_KUBERNETES_CERTIFICATE", "d2l0aCBpdHMgaGVhZA==")
-
-	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{}, "test")
-	suite.Require().NoError(err)
-	suite.Equal("beware the jabberwock", cfg.Command)
-	suite.Equal([]string{"chortle=http://calloo.callay/frabjous/day"}, cfg.AddRepos)
-	suite.Equal("http://tumtum.tree", cfg.APIServer)
-	suite.Equal("tulgey", cfg.ServiceAccount)
-	suite.True(cfg.Wait, "Wait should be aliased")
-	suite.True(cfg.Force, "Force should be aliased")
-	suite.Equal("Y29tZSB0byBteSBhcm1z", cfg.KubeToken, "KubeToken should be aliased")
-	suite.Equal("d2l0aCBpdHMgaGVhZA==", cfg.Certificate, "Certificate should be aliased")
-}
-
-func (suite *ConfigTestSuite) TestAliasedSettingWithoutPluginPrefix() {
-	suite.unsetenv("FORCE_UPGRADE")
-	suite.unsetenv("PLUGIN_FORCE_UPGRADE")
-	suite.unsetenv("PLUGIN_FORCE")
-	suite.setenv("FORCE", "true")
-
-	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{}, "test")
-	suite.Require().NoError(err)
-	suite.True(cfg.Force)
-}
-
-func (suite *ConfigTestSuite) TestNewConfigWithAliasConflicts() {
-	suite.unsetenv("FORCE_UPGRADE")
-	suite.setenv("PLUGIN_FORCE", "true")
-	suite.setenv("PLUGIN_FORCE_UPGRADE", "false") // should override even when set to the zero value
-
-	cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{}, "test")
-	suite.NoError(err)
-	suite.False(cfg.Force, "official names should override alias names")
-}
-
-func (suite *ConfigTestSuite) TestNewConfigSetsWriters() {
-	stdout := &strings.Builder{}
-	stderr := &strings.Builder{}
-	cfg, err := NewConfig(stdout, stderr, "test")
-	suite.Require().NoError(err)
-
-	suite.Equal(stdout, cfg.Stdout)
-	suite.Equal(stderr, cfg.Stderr)
-}
-
-func (suite *ConfigTestSuite) TestDeprecatedSettingWarnings() {
-	for _, varname := range deprecatedVars {
-		suite.setenv(varname, "deprecoat") // environment-block entries should cause warnings
-	}
-
-	suite.unsetenv("PURGE")
-	suite.setenv("PLUGIN_PURGE", "true") // settings-block entries should cause warnings
-	suite.setenv("UPGRADE", "")          // entries should cause warnings even when set to empty string
-
-	stderr := &strings.Builder{}
-	_, err := NewConfig(&strings.Builder{}, stderr, "test")
-	suite.NoError(err)
-
-	for _, varname := range deprecatedVars {
-		suite.Contains(stderr.String(), fmt.Sprintf("Warning: ignoring deprecated '%s' setting\n", strings.ToLower(varname)))
-	}
-}
-
-func (suite *ConfigTestSuite) TestLogDebug() {
-	suite.setenv("DEBUG", "true")
-	suite.setenv("MODE", "upgrade")
-
-	stderr := strings.Builder{}
-	stdout := strings.Builder{}
-	_, err := NewConfig(&stdout, &stderr, "test")
-	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/mock_step_test.go

@@ -6,7 +6,6 @@ package helm
 
 import (
 	gomock "github.com/golang/mock/gomock"
-	run "github.com/pelotech/drone-helm3/internal/run"
 	reflect "reflect"
 )
 
@@ -34,29 +33,29 @@ func (m *MockStep) EXPECT() *MockStepMockRecorder {
 }
 
 // Prepare mocks base method
-func (m *MockStep) Prepare(arg0 run.Config) error {
+func (m *MockStep) Prepare() error {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Prepare", arg0)
+	ret := m.ctrl.Call(m, "Prepare")
 	ret0, _ := ret[0].(error)
 	return ret0
 }
 
 // Prepare indicates an expected call of Prepare
-func (mr *MockStepMockRecorder) Prepare(arg0 interface{}) *gomock.Call {
+func (mr *MockStepMockRecorder) Prepare() *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Prepare", reflect.TypeOf((*MockStep)(nil).Prepare), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Prepare", reflect.TypeOf((*MockStep)(nil).Prepare))
 }
 
 // Execute mocks base method
-func (m *MockStep) Execute(arg0 run.Config) error {
+func (m *MockStep) Execute() error {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Execute", arg0)
+	ret := m.ctrl.Call(m, "Execute")
 	ret0, _ := ret[0].(error)
 	return ret0
 }
 
 // Execute indicates an expected call of Execute
-func (mr *MockStepMockRecorder) Execute(arg0 interface{}) *gomock.Call {
+func (mr *MockStepMockRecorder) Execute() *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Execute", reflect.TypeOf((*MockStep)(nil).Execute), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Execute", reflect.TypeOf((*MockStep)(nil).Execute))
 }

internal/helm/plan.go

@@ -2,6 +2,7 @@ package helm
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/pelotech/drone-helm3/internal/run"
 	"os"
 )
@@ -13,27 +14,20 @@ const (
 
 // A Step is one step in the plan.
 type Step interface {
-	Prepare(run.Config) error
+	Prepare() error
-	Execute(run.Config) error
+	Execute() error
 }
 
 // A Plan is a series of steps to perform.
 type Plan struct {
 	steps []Step
-	cfg    Config
+	cfg   env.Config
-	runCfg run.Config
 }
 
 // NewPlan makes a plan for running a helm operation.
-func NewPlan(cfg Config) (*Plan, error) {
+func NewPlan(cfg env.Config) (*Plan, error) {
 	p := Plan{
 		cfg: cfg,
-		runCfg: run.Config{
-			Debug:     cfg.Debug,
-			Namespace: cfg.Namespace,
-			Stdout:    cfg.Stdout,
-			Stderr:    cfg.Stderr,
-		},
 	}
 
 	p.steps = (*determineSteps(cfg))(cfg)
@@ -43,7 +37,7 @@ func NewPlan(cfg Config) (*Plan, error) {
 			fmt.Fprintf(os.Stderr, "calling %T.Prepare (step %d)\n", step, i)
 		}
 
-		if err := step.Prepare(p.runCfg); err != nil {
+		if err := step.Prepare(); err != nil {
 			err = fmt.Errorf("while preparing %T step: %w", step, err)
 			return nil, err
 		}
@@ -54,7 +48,7 @@ func NewPlan(cfg Config) (*Plan, error) {
 
 // determineSteps is primarily for the tests' convenience: it allows testing the "which stuff should
 // we do" logic without building a config that meets all the steps' requirements.
-func determineSteps(cfg Config) *func(Config) []Step {
+func determineSteps(cfg env.Config) *func(env.Config) []Step {
 	switch cfg.Command {
 	case "upgrade":
 		return &upgrade
@@ -83,7 +77,7 @@ func (p *Plan) Execute() error {
 			fmt.Fprintf(p.cfg.Stderr, "calling %T.Execute (step %d)\n", step, i)
 		}
 
-		if err := step.Execute(p.runCfg); err != nil {
+		if err := step.Execute(); err != nil {
 			return fmt.Errorf("while executing %T step: %w", step, err)
 		}
 	}
@@ -91,97 +85,43 @@ func (p *Plan) Execute() error {
 	return nil
 }
 
-var upgrade = func(cfg Config) []Step {
+var upgrade = func(cfg env.Config) []Step {
-	steps := initKube(cfg)
+	var steps []Step
-	steps = append(steps, addRepos(cfg)...)
+	steps = append(steps, run.NewInitKube(cfg, kubeConfigTemplate, kubeConfigFile))
-	if cfg.UpdateDependencies {
-		steps = append(steps, depUpdate(cfg)...)
-	}
-	steps = append(steps, &run.Upgrade{
-		Chart:         cfg.Chart,
-		Release:       cfg.Release,
-		ChartVersion:  cfg.ChartVersion,
-		DryRun:        cfg.DryRun,
-		Wait:          cfg.Wait,
-		Values:        cfg.Values,
-		StringValues:  cfg.StringValues,
-		ValuesFiles:   cfg.ValuesFiles,
-		ReuseValues:   cfg.ReuseValues,
-		Timeout:       cfg.Timeout,
-		Force:         cfg.Force,
-		Atomic:        cfg.AtomicUpgrade,
-		CleanupOnFail: cfg.CleanupOnFail,
-	})
-
-	return steps
-}
-
-var uninstall = func(cfg Config) []Step {
-	steps := initKube(cfg)
-	if cfg.UpdateDependencies {
-		steps = append(steps, depUpdate(cfg)...)
-	}
-	steps = append(steps, &run.Uninstall{
-		Release:     cfg.Release,
-		DryRun:      cfg.DryRun,
-		KeepHistory: cfg.KeepHistory,
-	})
-
-	return steps
-}
-
-var lint = func(cfg Config) []Step {
-	steps := addRepos(cfg)
-	if cfg.UpdateDependencies {
-		steps = append(steps, depUpdate(cfg)...)
-	}
-	steps = append(steps, &run.Lint{
-		Chart:        cfg.Chart,
-		Values:       cfg.Values,
-		StringValues: cfg.StringValues,
-		ValuesFiles:  cfg.ValuesFiles,
-		Strict:       cfg.LintStrictly,
-	})
-
-	return steps
-}
-
-var help = func(cfg Config) []Step {
-	help := &run.Help{
-		HelmCommand: cfg.Command,
-	}
-	return []Step{help}
-}
-
-func initKube(cfg Config) []Step {
-	return []Step{
-		&run.InitKube{
-			SkipTLSVerify:  cfg.SkipTLSVerify,
-			Certificate:    cfg.Certificate,
-			APIServer:      cfg.APIServer,
-			ServiceAccount: cfg.ServiceAccount,
-			Token:          cfg.KubeToken,
-			TemplateFile:   kubeConfigTemplate,
-			ConfigFile:     kubeConfigFile,
-		},
-	}
-}
-
-func addRepos(cfg Config) []Step {
-	steps := make([]Step, 0)
 	for _, repo := range cfg.AddRepos {
-		steps = append(steps, &run.AddRepo{
+		steps = append(steps, run.NewAddRepo(cfg, repo))
-			Repo: repo,
-		})
 	}
+	if cfg.UpdateDependencies {
+		steps = append(steps, run.NewDepUpdate(cfg))
+	}
+	steps = append(steps, run.NewUpgrade(cfg))
 
 	return steps
 }
 
-func depUpdate(cfg Config) []Step {
+var uninstall = func(cfg env.Config) []Step {
-	return []Step{
+	var steps []Step
-		&run.DepUpdate{
+	steps = append(steps, run.NewInitKube(cfg, kubeConfigTemplate, kubeConfigFile))
-			Chart: cfg.Chart,
+	if cfg.UpdateDependencies {
-		},
+		steps = append(steps, run.NewDepUpdate(cfg))
 	}
+	steps = append(steps, run.NewUninstall(cfg))
+
+	return steps
+}
+
+var lint = func(cfg env.Config) []Step {
+	var steps []Step
+	for _, repo := range cfg.AddRepos {
+		steps = append(steps, run.NewAddRepo(cfg, repo))
+	}
+	if cfg.UpdateDependencies {
+		steps = append(steps, run.NewDepUpdate(cfg))
+	}
+	steps = append(steps, run.NewLint(cfg))
+	return steps
+}
+
+var help = func(cfg env.Config) []Step {
+	return []Step{run.NewHelp(cfg)}
 }

internal/helm/plan_test.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/pelotech/drone-helm3/internal/run"
 )
 
@@ -25,14 +26,14 @@ func (suite *PlanTestSuite) TestNewPlan() {
 	stepTwo := NewMockStep(ctrl)
 
 	origHelp := help
-	help = func(cfg Config) []Step {
+	help = func(cfg env.Config) []Step {
 		return []Step{stepOne, stepTwo}
 	}
 	defer func() { help = origHelp }()
 
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
-	cfg := Config{
+	cfg := env.Config{
 		Command:   "help",
 		Debug:     false,
 		Namespace: "outer",
@@ -40,22 +41,14 @@ func (suite *PlanTestSuite) TestNewPlan() {
 		Stderr:    &stderr,
 	}
 
-	runCfg := run.Config{
-		Debug:     false,
-		Namespace: "outer",
-		Stdout:    &stdout,
-		Stderr:    &stderr,
-	}
-
 	stepOne.EXPECT().
-		Prepare(runCfg)
+		Prepare()
 	stepTwo.EXPECT().
-		Prepare(runCfg)
+		Prepare()
 
 	plan, err := NewPlan(cfg)
 	suite.Require().Nil(err)
 	suite.Equal(cfg, plan.cfg)
-	suite.Equal(runCfg, plan.runCfg)
 }
 
 func (suite *PlanTestSuite) TestNewPlanAbortsOnError() {
@@ -65,17 +58,17 @@ func (suite *PlanTestSuite) TestNewPlanAbortsOnError() {
 	stepTwo := NewMockStep(ctrl)
 
 	origHelp := help
-	help = func(cfg Config) []Step {
+	help = func(cfg env.Config) []Step {
 		return []Step{stepOne, stepTwo}
 	}
 	defer func() { help = origHelp }()
 
-	cfg := Config{
+	cfg := env.Config{
 		Command: "help",
 	}
 
 	stepOne.EXPECT().
-		Prepare(gomock.Any()).
+		Prepare().
 		Return(fmt.Errorf("I'm starry Dave, aye, cat blew that"))
 
 	_, err := NewPlan(cfg)
@@ -89,18 +82,15 @@ func (suite *PlanTestSuite) TestExecute() {
 	stepOne := NewMockStep(ctrl)
 	stepTwo := NewMockStep(ctrl)
 
-	runCfg := run.Config{}
-
 	plan := Plan{
 		steps: []Step{stepOne, stepTwo},
-		runCfg: runCfg,
 	}
 
 	stepOne.EXPECT().
-		Execute(runCfg).
+		Execute().
 		Times(1)
 	stepTwo.EXPECT().
-		Execute(runCfg).
+		Execute().
 		Times(1)
 
 	suite.NoError(plan.Execute())
@@ -112,15 +102,12 @@ func (suite *PlanTestSuite) TestExecuteAbortsOnError() {
 	stepOne := NewMockStep(ctrl)
 	stepTwo := NewMockStep(ctrl)
 
-	runCfg := run.Config{}
-
 	plan := Plan{
 		steps: []Step{stepOne, stepTwo},
-		runCfg: runCfg,
 	}
 
 	stepOne.EXPECT().
-		Execute(runCfg).
+		Execute().
 		Times(1).
 		Return(fmt.Errorf("oh, he'll gnaw"))
 
@@ -129,50 +116,14 @@ func (suite *PlanTestSuite) TestExecuteAbortsOnError() {
 }
 
 func (suite *PlanTestSuite) TestUpgrade() {
-	cfg := Config{
+	steps := upgrade(env.Config{})
-		ChartVersion:  "seventeen",
-		DryRun:        true,
-		Wait:          true,
-		Values:        "steadfastness,forthrightness",
-		StringValues:  "tensile_strength,flexibility",
-		ValuesFiles:   []string{"/root/price_inventory.yml"},
-		ReuseValues:   true,
-		Timeout:       "go sit in the corner",
-		Chart:         "billboard_top_100",
-		Release:       "post_malone_circles",
-		Force:         true,
-		AtomicUpgrade: true,
-		CleanupOnFail: true,
-	}
-
-	steps := upgrade(cfg)
 	suite.Require().Equal(2, len(steps), "upgrade should return 2 steps")
-	suite.Require().IsType(&run.InitKube{}, steps[0])
+	suite.IsType(&run.InitKube{}, steps[0])
-
+	suite.IsType(&run.Upgrade{}, steps[1])
-	suite.Require().IsType(&run.Upgrade{}, steps[1])
-	upgrade, _ := steps[1].(*run.Upgrade)
-
-	expected := &run.Upgrade{
-		Chart:         cfg.Chart,
-		Release:       cfg.Release,
-		ChartVersion:  cfg.ChartVersion,
-		DryRun:        true,
-		Wait:          cfg.Wait,
-		Values:        "steadfastness,forthrightness",
-		StringValues:  "tensile_strength,flexibility",
-		ValuesFiles:   []string{"/root/price_inventory.yml"},
-		ReuseValues:   cfg.ReuseValues,
-		Timeout:       cfg.Timeout,
-		Force:         cfg.Force,
-		Atomic:        true,
-		CleanupOnFail: true,
-	}
-
-	suite.Equal(expected, upgrade)
 }
 
 func (suite *PlanTestSuite) TestUpgradeWithUpdateDependencies() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 	}
 	steps := upgrade(cfg)
@@ -182,7 +133,7 @@ func (suite *PlanTestSuite) TestUpgradeWithUpdateDependencies() {
 }
 
 func (suite *PlanTestSuite) TestUpgradeWithAddRepos() {
-	cfg := Config{
+	cfg := env.Config{
 		AddRepos: []string{
 			"machine=https://github.com/harold_finch/themachine",
 		},
@@ -193,47 +144,15 @@ func (suite *PlanTestSuite) TestUpgradeWithAddRepos() {
 }
 
 func (suite *PlanTestSuite) TestUninstall() {
-	cfg := Config{
+	steps := uninstall(env.Config{})
-		KubeToken:      "b2YgbXkgYWZmZWN0aW9u",
-		SkipTLSVerify:  true,
-		Certificate:    "cHJvY2xhaW1zIHdvbmRlcmZ1bCBmcmllbmRzaGlw",
-		APIServer:      "98.765.43.21",
-		ServiceAccount: "greathelm",
-		DryRun:         true,
-		Timeout:        "think about what you did",
-		Release:        "jetta_id_love_to_change_the_world",
-		KeepHistory:    true,
-	}
-
-	steps := uninstall(cfg)
 	suite.Require().Equal(2, len(steps), "uninstall should return 2 steps")
 
-	suite.Require().IsType(&run.InitKube{}, steps[0])
+	suite.IsType(&run.InitKube{}, steps[0])
-	init, _ := steps[0].(*run.InitKube)
+	suite.IsType(&run.Uninstall{}, steps[1])
-	var expected Step = &run.InitKube{
-		SkipTLSVerify:  true,
-		Certificate:    "cHJvY2xhaW1zIHdvbmRlcmZ1bCBmcmllbmRzaGlw",
-		APIServer:      "98.765.43.21",
-		ServiceAccount: "greathelm",
-		Token:          "b2YgbXkgYWZmZWN0aW9u",
-		TemplateFile:   kubeConfigTemplate,
-		ConfigFile:     kubeConfigFile,
-	}
-
-	suite.Equal(expected, init)
-
-	suite.Require().IsType(&run.Uninstall{}, steps[1])
-	actual, _ := steps[1].(*run.Uninstall)
-	expected = &run.Uninstall{
-		Release:     "jetta_id_love_to_change_the_world",
-		DryRun:      true,
-		KeepHistory: true,
-	}
-	suite.Equal(expected, actual)
 }
 
 func (suite *PlanTestSuite) TestUninstallWithUpdateDependencies() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 	}
 	steps := uninstall(cfg)
@@ -242,91 +161,14 @@ func (suite *PlanTestSuite) TestUninstallWithUpdateDependencies() {
 	suite.IsType(&run.DepUpdate{}, steps[1])
 }
 
-func (suite *PlanTestSuite) TestInitKube() {
-	cfg := Config{
-		KubeToken:      "cXVlZXIgY2hhcmFjdGVyCg==",
-		SkipTLSVerify:  true,
-		Certificate:    "b2Ygd29rZW5lc3MK",
-		APIServer:      "123.456.78.9",
-		ServiceAccount: "helmet",
-	}
-
-	steps := initKube(cfg)
-	suite.Require().Equal(1, len(steps), "initKube should return one step")
-	suite.Require().IsType(&run.InitKube{}, steps[0])
-	init, _ := steps[0].(*run.InitKube)
-
-	expected := &run.InitKube{
-		SkipTLSVerify:  true,
-		Certificate:    "b2Ygd29rZW5lc3MK",
-		APIServer:      "123.456.78.9",
-		ServiceAccount: "helmet",
-		Token:          "cXVlZXIgY2hhcmFjdGVyCg==",
-		TemplateFile:   kubeConfigTemplate,
-		ConfigFile:     kubeConfigFile,
-	}
-	suite.Equal(expected, init)
-}
-
-func (suite *PlanTestSuite) TestDepUpdate() {
-	cfg := Config{
-		UpdateDependencies: true,
-		Chart:              "scatterplot",
-	}
-
-	steps := depUpdate(cfg)
-	suite.Require().Equal(1, len(steps), "depUpdate should return one step")
-	suite.Require().IsType(&run.DepUpdate{}, steps[0])
-	update, _ := steps[0].(*run.DepUpdate)
-
-	expected := &run.DepUpdate{
-		Chart: "scatterplot",
-	}
-	suite.Equal(expected, update)
-}
-
-func (suite *PlanTestSuite) TestAddRepos() {
-	cfg := Config{
-		AddRepos: []string{
-			"first=https://add.repos/one",
-			"second=https://add.repos/two",
-		},
-	}
-	steps := addRepos(cfg)
-	suite.Require().Equal(2, len(steps), "addRepos should add one step per repo")
-	suite.Require().IsType(&run.AddRepo{}, steps[0])
-	suite.Require().IsType(&run.AddRepo{}, steps[1])
-	first := steps[0].(*run.AddRepo)
-	second := steps[1].(*run.AddRepo)
-
-	suite.Equal(first.Repo, "first=https://add.repos/one")
-	suite.Equal(second.Repo, "second=https://add.repos/two")
-}
-
 func (suite *PlanTestSuite) TestLint() {
-	cfg := Config{
+	steps := lint(env.Config{})
-		Chart:        "./flow",
+	suite.Require().Equal(1, len(steps))
-		Values:       "steadfastness,forthrightness",
+	suite.IsType(&run.Lint{}, steps[0])
-		StringValues: "tensile_strength,flexibility",
-		ValuesFiles:  []string{"/root/price_inventory.yml"},
-		LintStrictly: true,
-	}
-
-	steps := lint(cfg)
-	suite.Equal(1, len(steps))
-
-	want := &run.Lint{
-		Chart:        "./flow",
-		Values:       "steadfastness,forthrightness",
-		StringValues: "tensile_strength,flexibility",
-		ValuesFiles:  []string{"/root/price_inventory.yml"},
-		Strict:       true,
-	}
-	suite.Equal(want, steps[0])
 }
 
 func (suite *PlanTestSuite) TestLintWithUpdateDependencies() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 	}
 	steps := lint(cfg)
@@ -335,7 +177,7 @@ func (suite *PlanTestSuite) TestLintWithUpdateDependencies() {
 }
 
 func (suite *PlanTestSuite) TestLintWithAddRepos() {
-	cfg := Config{
+	cfg := env.Config{
 		AddRepos: []string{"friendczar=https://github.com/logan_pierce/friendczar"},
 	}
 	steps := lint(cfg)
@@ -344,7 +186,7 @@ func (suite *PlanTestSuite) TestLintWithAddRepos() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanUpgradeCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "upgrade",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -352,7 +194,7 @@ func (suite *PlanTestSuite) TestDeterminePlanUpgradeCommand() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanUpgradeFromDroneEvent() {
-	cfg := Config{}
+	cfg := env.Config{}
 
 	upgradeEvents := []string{"push", "tag", "deployment", "pull_request", "promote", "rollback"}
 	for _, event := range upgradeEvents {
@@ -363,7 +205,7 @@ func (suite *PlanTestSuite) TestDeterminePlanUpgradeFromDroneEvent() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanUninstallCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "uninstall",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -372,7 +214,7 @@ func (suite *PlanTestSuite) TestDeterminePlanUninstallCommand() {
 
 // helm_command = delete is provided as an alias for backward-compatibility with drone-helm
 func (suite *PlanTestSuite) TestDeterminePlanDeleteCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "delete",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -380,7 +222,7 @@ func (suite *PlanTestSuite) TestDeterminePlanDeleteCommand() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanDeleteFromDroneEvent() {
-	cfg := Config{
+	cfg := env.Config{
 		DroneEvent: "delete",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -388,7 +230,7 @@ func (suite *PlanTestSuite) TestDeterminePlanDeleteFromDroneEvent() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanLintCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "lint",
 	}
 
@@ -397,7 +239,7 @@ func (suite *PlanTestSuite) TestDeterminePlanLintCommand() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanHelpCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "help",
 	}
 

internal/run/addrepo.go

@@ -2,50 +2,58 @@ package run
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"strings"
 )
 
 // AddRepo is an execution step that calls `helm repo add` when executed.
 type AddRepo struct {
-	Repo string
+	*config
+	repo   string
+	caFile string
 	cmd    cmd
 }
 
+// NewAddRepo creates an AddRepo for the given repo-spec. No validation is performed at this time.
+func NewAddRepo(cfg env.Config, repo string) *AddRepo {
+	return &AddRepo{
+		config: newConfig(cfg),
+		repo:   repo,
+		caFile: cfg.RepoCAFile,
+	}
+}
+
 // Execute executes the `helm repo add` command.
-func (a *AddRepo) Execute(_ Config) error {
+func (a *AddRepo) Execute() error {
 	return a.cmd.Run()
 }
 
 // Prepare gets the AddRepo ready to execute.
-func (a *AddRepo) Prepare(cfg Config) error {
+func (a *AddRepo) Prepare() error {
-	if a.Repo == "" {
+	if a.repo == "" {
 		return fmt.Errorf("repo is required")
 	}
-	split := strings.SplitN(a.Repo, "=", 2)
+	split := strings.SplitN(a.repo, "=", 2)
 	if len(split) != 2 {
-		return fmt.Errorf("bad repo spec '%s'", a.Repo)
+		return fmt.Errorf("bad repo spec '%s'", a.repo)
 	}
 
 	name := split[0]
 	url := split[1]
 
-	args := make([]string, 0)
+	args := a.globalFlags()
-
+	args = append(args, "repo", "add")
-	if cfg.Namespace != "" {
+	if a.caFile != "" {
-		args = append(args, "--namespace", cfg.Namespace)
+		args = append(args, "--ca-file", a.caFile)
 	}
-	if cfg.Debug {
+	args = append(args, name, url)
-		args = append(args, "--debug")
-	}
-
-	args = append(args, "repo", "add", name, url)
 
 	a.cmd = command(helmBin, args...)
-	a.cmd.Stdout(cfg.Stdout)
+	a.cmd.Stdout(a.stdout)
-	a.cmd.Stderr(cfg.Stderr)
+	a.cmd.Stderr(a.stderr)
 
-	if cfg.Debug {
+	if a.debug {
-		fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", a.cmd.String())
+		fmt.Fprintf(a.stderr, "Generated command: '%s'\n", a.cmd.String())
 	}
 
 	return nil

internal/run/addrepo_test.go

@@ -1,8 +1,8 @@
 package run
 
 import (
-	"fmt"
 	"github.com/golang/mock/gomock"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/suite"
 	"strings"
 	"testing"
@@ -38,16 +38,21 @@ func TestAddRepoTestSuite(t *testing.T) {
 	suite.Run(t, new(AddRepoTestSuite))
 }
 
+func (suite *AddRepoTestSuite) TestNewAddRepo() {
+	repo := NewAddRepo(env.Config{}, "picompress=https://github.com/caleb_phipps/picompress")
+	suite.Require().NotNil(repo)
+	suite.Equal("picompress=https://github.com/caleb_phipps/picompress", repo.repo)
+	suite.NotNil(repo.config)
+}
+
 func (suite *AddRepoTestSuite) TestPrepareAndExecute() {
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
-	cfg := Config{
+	cfg := env.Config{
 		Stdout: &stdout,
 		Stderr: &stderr,
 	}
-	a := AddRepo{
+	a := NewAddRepo(cfg, "edeath=https://github.com/n_marks/e-death")
-		Repo: "edeath=https://github.com/n_marks/e-death",
-	}
 
 	suite.mockCmd.EXPECT().
 		Stdout(&stdout).
@@ -56,7 +61,7 @@ func (suite *AddRepoTestSuite) TestPrepareAndExecute() {
 		Stderr(&stderr).
 		Times(1)
 
-	suite.Require().NoError(a.Prepare(cfg))
+	suite.Require().NoError(a.Prepare())
 	suite.Equal(helmBin, suite.commandPath)
 	suite.Equal([]string{"repo", "add", "edeath", "https://github.com/n_marks/e-death"}, suite.commandArgs)
 
@@ -64,7 +69,7 @@ func (suite *AddRepoTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	suite.Require().NoError(a.Execute(cfg))
+	suite.Require().NoError(a.Execute())
 
 }
 
@@ -72,70 +77,34 @@ func (suite *AddRepoTestSuite) TestPrepareRepoIsRequired() {
 	// These aren't really expected, but allowing them gives clearer test-failure messages
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-	cfg := Config{}
+	a := NewAddRepo(env.Config{}, "")
-	a := AddRepo{}
 
-	err := a.Prepare(cfg)
+	err := a.Prepare()
 	suite.EqualError(err, "repo is required")
 }
 
 func (suite *AddRepoTestSuite) TestPrepareMalformedRepo() {
-	a := AddRepo{
+	a := NewAddRepo(env.Config{}, "dwim")
-		Repo: "dwim",
+	err := a.Prepare()
-	}
-	err := a.Prepare(Config{})
 	suite.EqualError(err, "bad repo spec 'dwim'")
 }
 
 func (suite *AddRepoTestSuite) TestPrepareWithEqualSignInURL() {
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-	a := AddRepo{
+	a := NewAddRepo(env.Config{}, "samaritan=https://github.com/arthur_claypool/samaritan?version=2.1")
-		Repo: "samaritan=https://github.com/arthur_claypool/samaritan?version=2.1",
+	suite.NoError(a.Prepare())
-	}
-	suite.NoError(a.Prepare(Config{}))
 	suite.Contains(suite.commandArgs, "https://github.com/arthur_claypool/samaritan?version=2.1")
 }
 
-func (suite *AddRepoTestSuite) TestNamespaceFlag() {
+func (suite *AddRepoTestSuite) TestRepoAddFlags() {
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-	cfg := Config{
+	cfg := env.Config{
-		Namespace: "alliteration",
+		RepoCAFile: "./helm/reporepo.cert",
 	}
-	a := AddRepo{
+	a := NewAddRepo(cfg, "machine=https://github.com/harold_finch/themachine")
-		Repo: "edeath=https://github.com/theater_guy/e-death",
+	suite.NoError(a.Prepare())
-	}
+	suite.Equal([]string{"repo", "add", "--ca-file", "./helm/reporepo.cert",
-
+		"machine", "https://github.com/harold_finch/themachine"}, suite.commandArgs)
-	suite.NoError(a.Prepare(cfg))
-	suite.Equal(suite.commandPath, helmBin)
-	suite.Equal(suite.commandArgs, []string{"--namespace", "alliteration",
-		"repo", "add", "edeath", "https://github.com/theater_guy/e-death"})
-}
-
-func (suite *AddRepoTestSuite) TestDebugFlag() {
-	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
-	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-
-	stderr := strings.Builder{}
-
-	command = func(path string, args ...string) cmd {
-		suite.mockCmd.EXPECT().
-			String().
-			Return(fmt.Sprintf("%s %s", path, strings.Join(args, " ")))
-
-		return suite.mockCmd
-	}
-
-	cfg := Config{
-		Debug:  true,
-		Stderr: &stderr,
-	}
-	a := AddRepo{
-		Repo: "edeath=https://github.com/the_bug/e-death",
-	}
-
-	suite.Require().NoError(a.Prepare(cfg))
-	suite.Equal(fmt.Sprintf("Generated command: '%s --debug "+
-		"repo add edeath https://github.com/the_bug/e-death'\n", helmBin), stderr.String())
 }

internal/run/config.go

@@ -1,13 +1,33 @@
 package run
 
 import (
+	"github.com/pelotech/drone-helm3/internal/env"
 	"io"
 )
 
-// Config contains configuration applicable to all helm commands
+type config struct {
-type Config struct {
+	debug     bool
-	Debug     bool
+	namespace string
-	Namespace string
+	stdout    io.Writer
-	Stdout    io.Writer
+	stderr    io.Writer
-	Stderr    io.Writer
+}
+
+func newConfig(cfg env.Config) *config {
+	return &config{
+		debug:     cfg.Debug,
+		namespace: cfg.Namespace,
+		stdout:    cfg.Stdout,
+		stderr:    cfg.Stderr,
+	}
+}
+
+func (cfg *config) globalFlags() []string {
+	flags := []string{}
+	if cfg.debug {
+		flags = append(flags, "--debug")
+	}
+	if cfg.namespace != "" {
+		flags = append(flags, "--namespace", cfg.namespace)
+	}
+	return flags
 }

internal/run/config_test.go

@@ -0,0 +1,48 @@
+package run
+
+import (
+	"github.com/pelotech/drone-helm3/internal/env"
+	"github.com/stretchr/testify/suite"
+	"strings"
+	"testing"
+)
+
+type ConfigTestSuite struct {
+	suite.Suite
+}
+
+func TestConfigTestSuite(t *testing.T) {
+	suite.Run(t, new(ConfigTestSuite))
+}
+
+func (suite *ConfigTestSuite) TestNewConfig() {
+	stdout := &strings.Builder{}
+	stderr := &strings.Builder{}
+	envCfg := env.Config{
+		Namespace: "private",
+		Debug:     true,
+		Stdout:    stdout,
+		Stderr:    stderr,
+	}
+	cfg := newConfig(envCfg)
+	suite.Require().NotNil(cfg)
+	suite.Equal(&config{
+		namespace: "private",
+		debug:     true,
+		stdout:    stdout,
+		stderr:    stderr,
+	}, cfg)
+}
+
+func (suite *ConfigTestSuite) TestGlobalFlags() {
+	cfg := config{
+		debug:     true,
+		namespace: "public",
+	}
+	flags := cfg.globalFlags()
+	suite.Equal([]string{"--debug", "--namespace", "public"}, flags)
+
+	cfg = config{}
+	flags = cfg.globalFlags()
+	suite.Equal([]string{}, flags)
+}

internal/run/depupdate.go

@@ -2,42 +2,44 @@ package run
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 )
 
 // DepUpdate is an execution step that calls `helm dependency update` when executed.
 type DepUpdate struct {
-	Chart string
+	*config
+	chart string
 	cmd   cmd
 }
 
+// NewDepUpdate creates a DepUpdate using fields from the given Config. No validation is performed at this time.
+func NewDepUpdate(cfg env.Config) *DepUpdate {
+	return &DepUpdate{
+		config: newConfig(cfg),
+		chart:  cfg.Chart,
+	}
+}
+
 // Execute executes the `helm upgrade` command.
-func (d *DepUpdate) Execute(_ Config) error {
+func (d *DepUpdate) Execute() error {
 	return d.cmd.Run()
 }
 
 // Prepare gets the DepUpdate ready to execute.
-func (d *DepUpdate) Prepare(cfg Config) error {
+func (d *DepUpdate) Prepare() error {
-	if d.Chart == "" {
+	if d.chart == "" {
 		return fmt.Errorf("chart is required")
 	}
 
-	args := make([]string, 0)
+	args := d.globalFlags()
-
+	args = append(args, "dependency", "update", d.chart)
-	if cfg.Namespace != "" {
-		args = append(args, "--namespace", cfg.Namespace)
-	}
-	if cfg.Debug {
-		args = append(args, "--debug")
-	}
-
-	args = append(args, "dependency", "update", d.Chart)
 
 	d.cmd = command(helmBin, args...)
-	d.cmd.Stdout(cfg.Stdout)
+	d.cmd.Stdout(d.stdout)
-	d.cmd.Stderr(cfg.Stderr)
+	d.cmd.Stderr(d.stderr)
 
-	if cfg.Debug {
+	if d.debug {
-		fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", d.cmd.String())
+		fmt.Fprintf(d.stderr, "Generated command: '%s'\n", d.cmd.String())
 	}
 
 	return nil

internal/run/depupdate_test.go

@@ -1,8 +1,8 @@
 package run
 
 import (
-	"fmt"
 	"github.com/golang/mock/gomock"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/suite"
 	"strings"
 	"testing"
@@ -31,12 +31,21 @@ func TestDepUpdateTestSuite(t *testing.T) {
 	suite.Run(t, new(DepUpdateTestSuite))
 }
 
+func (suite *DepUpdateTestSuite) TestNewDepUpdate() {
+	cfg := env.Config{
+		Chart: "scatterplot",
+	}
+	d := NewDepUpdate(cfg)
+	suite.Equal("scatterplot", d.chart)
+}
+
 func (suite *DepUpdateTestSuite) TestPrepareAndExecute() {
 	defer suite.ctrl.Finish()
 
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
-	cfg := Config{
+	cfg := env.Config{
+		Chart:  "your_top_songs_2019",
 		Stdout: &stdout,
 		Stderr: &stderr,
 	}
@@ -55,74 +64,18 @@ func (suite *DepUpdateTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	d := DepUpdate{
+	d := NewDepUpdate(cfg)
-		Chart: "your_top_songs_2019",
-	}
 
-	suite.Require().NoError(d.Prepare(cfg))
+	suite.Require().NoError(d.Prepare())
-	suite.NoError(d.Execute(cfg))
+	suite.NoError(d.Execute())
-}
-
-func (suite *DepUpdateTestSuite) TestPrepareNamespaceFlag() {
-	defer suite.ctrl.Finish()
-
-	cfg := Config{
-		Namespace: "spotify",
-	}
-
-	command = func(path string, args ...string) cmd {
-		suite.Equal([]string{"--namespace", "spotify", "dependency", "update", "your_top_songs_2019"}, args)
-
-		return suite.mockCmd
-	}
-	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
-	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-
-	d := DepUpdate{
-		Chart: "your_top_songs_2019",
-	}
-
-	suite.Require().NoError(d.Prepare(cfg))
-}
-
-func (suite *DepUpdateTestSuite) TestPrepareDebugFlag() {
-	defer suite.ctrl.Finish()
-
-	stdout := strings.Builder{}
-	stderr := strings.Builder{}
-	cfg := Config{
-		Debug:  true,
-		Stdout: &stdout,
-		Stderr: &stderr,
-	}
-
-	command = func(path string, args ...string) cmd {
-		suite.mockCmd.EXPECT().
-			String().
-			Return(fmt.Sprintf("%s %s", path, strings.Join(args, " ")))
-
-		return suite.mockCmd
-	}
-	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
-	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-
-	d := DepUpdate{
-		Chart: "your_top_songs_2019",
-	}
-
-	suite.Require().NoError(d.Prepare(cfg))
-
-	want := fmt.Sprintf("Generated command: '%s --debug dependency update your_top_songs_2019'\n", helmBin)
-	suite.Equal(want, stderr.String())
-	suite.Equal("", stdout.String())
 }
 
 func (suite *DepUpdateTestSuite) TestPrepareChartRequired() {
-	d := DepUpdate{}
+	d := NewDepUpdate(env.Config{})
 
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
-	err := d.Prepare(Config{})
+	err := d.Prepare()
 	suite.EqualError(err, "chart is required")
 }

internal/run/help.go

@@ -2,39 +2,47 @@ package run
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 )
 
 // Help is a step in a helm Plan that calls `helm help`.
 type Help struct {
-	HelmCommand string
+	*config
+	helmCommand string
 	cmd         cmd
 }
 
+// NewHelp creates a Help using fields from the given Config. No validation is performed at this time.
+func NewHelp(cfg env.Config) *Help {
+	return &Help{
+		config:      newConfig(cfg),
+		helmCommand: cfg.Command,
+	}
+}
+
 // Execute executes the `helm help` command.
-func (h *Help) Execute(cfg Config) error {
+func (h *Help) Execute() error {
 	if err := h.cmd.Run(); err != nil {
 		return fmt.Errorf("while running '%s': %w", h.cmd.String(), err)
 	}
 
-	if h.HelmCommand == "help" {
+	if h.helmCommand == "help" {
 		return nil
 	}
-	return fmt.Errorf("unknown command '%s'", h.HelmCommand)
+	return fmt.Errorf("unknown command '%s'", h.helmCommand)
 }
 
 // Prepare gets the Help ready to execute.
-func (h *Help) Prepare(cfg Config) error {
+func (h *Help) Prepare() error {
-	args := []string{"help"}
+	args := h.globalFlags()
-	if cfg.Debug {
+	args = append(args, "help")
-		args = append([]string{"--debug"}, args...)
-	}
 
 	h.cmd = command(helmBin, args...)
-	h.cmd.Stdout(cfg.Stdout)
+	h.cmd.Stdout(h.stdout)
-	h.cmd.Stderr(cfg.Stderr)
+	h.cmd.Stderr(h.stderr)
 
-	if cfg.Debug {
+	if h.debug {
-		fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", h.cmd.String())
+		fmt.Fprintf(h.stderr, "Generated command: '%s'\n", h.cmd.String())
 	}
 
 	return nil

internal/run/help_test.go

@@ -1,8 +1,8 @@
 package run
 
 import (
-	"fmt"
 	"github.com/golang/mock/gomock"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/suite"
 	"strings"
@@ -17,6 +17,15 @@ func TestHelpTestSuite(t *testing.T) {
 	suite.Run(t, new(HelpTestSuite))
 }
 
+func (suite *HelpTestSuite) TestNewHelp() {
+	cfg := env.Config{
+		Command: "everybody dance NOW!!",
+	}
+	help := NewHelp(cfg)
+	suite.Require().NotNil(help)
+	suite.Equal("everybody dance NOW!!", help.helmCommand)
+}
+
 func (suite *HelpTestSuite) TestPrepare() {
 	ctrl := gomock.NewController(suite.T())
 	defer ctrl.Finish()
@@ -39,13 +48,13 @@ func (suite *HelpTestSuite) TestPrepare() {
 	mCmd.EXPECT().
 		Stderr(&stderr)
 
-	cfg := Config{
+	cfg := env.Config{
 		Stdout: &stdout,
 		Stderr: &stderr,
 	}
 
-	h := Help{}
+	h := NewHelp(cfg)
-	err := h.Prepare(cfg)
+	err := h.Prepare()
 	suite.NoError(err)
 }
 
@@ -53,41 +62,15 @@ func (suite *HelpTestSuite) TestExecute() {
 	ctrl := gomock.NewController(suite.T())
 	defer ctrl.Finish()
 	mCmd := NewMockcmd(ctrl)
-	originalCommand := command
-	command = func(_ string, _ ...string) cmd {
-		return mCmd
-	}
-	defer func() { command = originalCommand }()
 
 	mCmd.EXPECT().
 		Run().
 		Times(2)
 
-	cfg := Config{}
+	help := NewHelp(env.Config{Command: "help"})
-	help := Help{
+	help.cmd = mCmd
-		HelmCommand: "help",
+	suite.NoError(help.Execute())
-		cmd:         mCmd,
+
-	}
+	help.helmCommand = "get down on friday"
-	suite.NoError(help.Execute(cfg))
+	suite.EqualError(help.Execute(), "unknown command 'get down on friday'")
-
-	help.HelmCommand = "get down on friday"
-	suite.EqualError(help.Execute(cfg), "unknown command 'get down on friday'")
-}
-
-func (suite *HelpTestSuite) TestPrepareDebugFlag() {
-	help := Help{}
-
-	stdout := strings.Builder{}
-	stderr := strings.Builder{}
-	cfg := Config{
-		Debug:  true,
-		Stdout: &stdout,
-		Stderr: &stderr,
-	}
-
-	help.Prepare(cfg)
-
-	want := fmt.Sprintf("Generated command: '%s --debug help'\n", helmBin)
-	suite.Equal(want, stderr.String())
-	suite.Equal("", stdout.String())
 }

internal/run/initkube.go

@@ -3,6 +3,7 @@ package run
 import (
 	"errors"
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"io"
 	"os"
 	"text/template"
@@ -10,14 +11,9 @@ import (
 
 // InitKube is a step in a helm Plan that initializes the kubernetes config file.
 type InitKube struct {
-	SkipTLSVerify  bool
+	*config
-	Certificate    string
+	templateFilename string
-	APIServer      string
+	configFilename   string
-	ServiceAccount string
-	Token          string
-	TemplateFile   string
-	ConfigFile     string
-
 	template         *template.Template
 	configFile       io.WriteCloser
 	values           kubeValues
@@ -32,58 +28,66 @@ type kubeValues struct {
 	Token          string
 }
 
+// NewInitKube creates a InitKube using the given Config and filepaths. No validation is performed at this time.
+func NewInitKube(cfg env.Config, templateFile, configFile string) *InitKube {
+	return &InitKube{
+		config: newConfig(cfg),
+		values: kubeValues{
+			SkipTLSVerify:  cfg.SkipTLSVerify,
+			Certificate:    cfg.Certificate,
+			APIServer:      cfg.APIServer,
+			Namespace:      cfg.Namespace,
+			ServiceAccount: cfg.ServiceAccount,
+			Token:          cfg.KubeToken,
+		},
+		templateFilename: templateFile,
+		configFilename:   configFile,
+	}
+}
+
 // Execute generates a kubernetes config file from drone-helm3's template.
-func (i *InitKube) Execute(cfg Config) error {
+func (i *InitKube) Execute() error {
-	if cfg.Debug {
+	if i.debug {
-		fmt.Fprintf(cfg.Stderr, "writing kubeconfig file to %s\n", i.ConfigFile)
+		fmt.Fprintf(i.stderr, "writing kubeconfig file to %s\n", i.configFilename)
 	}
 	defer i.configFile.Close()
 	return i.template.Execute(i.configFile, i.values)
 }
 
 // Prepare ensures all required configuration is present and that the config file is writable.
-func (i *InitKube) Prepare(cfg Config) error {
+func (i *InitKube) Prepare() error {
 	var err error
 
-	if i.APIServer == "" {
+	if i.values.APIServer == "" {
 		return errors.New("an API Server is needed to deploy")
 	}
-	if i.Token == "" {
+	if i.values.Token == "" {
 		return errors.New("token is needed to deploy")
 	}
 
-	if i.ServiceAccount == "" {
+	if i.values.ServiceAccount == "" {
-		i.ServiceAccount = "helm"
+		i.values.ServiceAccount = "helm"
 	}
 
-	if cfg.Debug {
+	if i.debug {
-		fmt.Fprintf(cfg.Stderr, "loading kubeconfig template from %s\n", i.TemplateFile)
+		fmt.Fprintf(i.stderr, "loading kubeconfig template from %s\n", i.templateFilename)
 	}
-	i.template, err = template.ParseFiles(i.TemplateFile)
+	i.template, err = template.ParseFiles(i.templateFilename)
 	if err != nil {
 		return fmt.Errorf("could not load kubeconfig template: %w", err)
 	}
 
-	i.values = kubeValues{
+	if i.debug {
-		SkipTLSVerify:  i.SkipTLSVerify,
+		if _, err := os.Stat(i.configFilename); err != nil {
-		Certificate:    i.Certificate,
-		APIServer:      i.APIServer,
-		ServiceAccount: i.ServiceAccount,
-		Token:          i.Token,
-		Namespace:      cfg.Namespace,
-	}
-
-	if cfg.Debug {
-		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 ")
+			fmt.Fprint(i.stderr, "creating ")
 		} else {
-			fmt.Fprint(cfg.Stderr, "truncating ")
+			fmt.Fprint(i.stderr, "truncating ")
 		}
-		fmt.Fprintf(cfg.Stderr, "kubeconfig file at %s\n", i.ConfigFile)
+		fmt.Fprintf(i.stderr, "kubeconfig file at %s\n", i.configFilename)
 	}
 
-	i.configFile, err = os.Create(i.ConfigFile)
+	i.configFile, err = os.Create(i.configFilename)
 	if err != nil {
 		return fmt.Errorf("could not open kubeconfig file for writing: %w", err)
 	}

internal/run/initkube_test.go

@@ -1,10 +1,13 @@
 package run
 
 import (
+	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/suite"
 	yaml "gopkg.in/yaml.v2"
 	"io/ioutil"
 	"os"
+	"strings"
 	"testing"
 	"text/template"
 )
@@ -17,6 +20,30 @@ func TestInitKubeTestSuite(t *testing.T) {
 	suite.Run(t, new(InitKubeTestSuite))
 }
 
+func (suite *InitKubeTestSuite) TestNewInitKube() {
+	cfg := env.Config{
+		SkipTLSVerify:  true,
+		Certificate:    "cHJvY2xhaW1zIHdvbmRlcmZ1bCBmcmllbmRzaGlw",
+		APIServer:      "98.765.43.21",
+		ServiceAccount: "greathelm",
+		KubeToken:      "b2YgbXkgYWZmZWN0aW9u",
+		Stderr:         &strings.Builder{},
+		Debug:          true,
+	}
+
+	init := NewInitKube(cfg, "conf.tpl", "conf.yml")
+	suite.Equal(kubeValues{
+		SkipTLSVerify:  true,
+		Certificate:    "cHJvY2xhaW1zIHdvbmRlcmZ1bCBmcmllbmRzaGlw",
+		APIServer:      "98.765.43.21",
+		ServiceAccount: "greathelm",
+		Token:          "b2YgbXkgYWZmZWN0aW9u",
+	}, init.values)
+	suite.Equal("conf.tpl", init.templateFilename)
+	suite.Equal("conf.yml", init.configFilename)
+	suite.NotNil(init.config)
+}
+
 func (suite *InitKubeTestSuite) TestPrepareExecute() {
 	templateFile, err := tempfile("kubeconfig********.yml.tpl", `
 certificate: {{ .Certificate }}
@@ -29,23 +56,20 @@ namespace: {{ .Namespace }}
 	defer os.Remove(configFile.Name())
 	suite.Require().Nil(err)
 
-	init := InitKube{
+	cfg := env.Config{
 		APIServer:   "Sysadmin",
 		Certificate: "CCNA",
-		Token:        "Aspire virtual currency",
+		KubeToken:   "Aspire virtual currency",
-		TemplateFile: templateFile.Name(),
-		ConfigFile:   configFile.Name(),
-	}
-	cfg := Config{
 		Namespace:   "Cisco",
 	}
-	err = init.Prepare(cfg)
+	init := NewInitKube(cfg, templateFile.Name(), configFile.Name())
+	err = init.Prepare()
 	suite.Require().Nil(err)
 
 	suite.IsType(&template.Template{}, init.template)
 	suite.NotNil(init.configFile)
 
-	err = init.Execute(cfg)
+	err = init.Execute()
 	suite.Require().Nil(err)
 
 	conf, err := ioutil.ReadFile(configFile.Name())
@@ -63,19 +87,16 @@ func (suite *InitKubeTestSuite) TestExecuteGeneratesConfig() {
 	defer os.Remove(configFile.Name())
 	suite.Require().NoError(err)
 
-	cfg := Config{
+	cfg := env.Config{
-		Namespace: "marshmallow",
-	}
-	init := InitKube{
-		ConfigFile:     configFile.Name(),
-		TemplateFile:   "../../assets/kubeconfig.tpl", // the actual kubeconfig template
 		APIServer:      "https://kube.cluster/peanut",
 		ServiceAccount: "chef",
-		Token:          "eWVhaCB3ZSB0b2tpbic=",
+		KubeToken:      "eWVhaCB3ZSB0b2tpbic=",
 		Certificate:    "d293LCB5b3UgYXJlIHNvIGNvb2wgZm9yIHNtb2tpbmcgd2VlZCDwn5mE",
+		Namespace:      "marshmallow",
 	}
-	suite.Require().NoError(init.Prepare(cfg))
+	init := NewInitKube(cfg, "../../assets/kubeconfig.tpl", configFile.Name()) // the actual kubeconfig template
-	suite.Require().NoError(init.Execute(cfg))
+	suite.Require().NoError(init.Prepare())
+	suite.Require().NoError(init.Execute())
 
 	contents, err := ioutil.ReadFile(configFile.Name())
 	suite.Require().NoError(err)
@@ -98,11 +119,11 @@ func (suite *InitKubeTestSuite) TestExecuteGeneratesConfig() {
 	suite.NoError(yaml.UnmarshalStrict(contents, &conf))
 
 	// test the other branch of the certificate/SkipTLSVerify conditional
-	init.SkipTLSVerify = true
+	init.values.SkipTLSVerify = true
-	init.Certificate = ""
+	init.values.Certificate = ""
 
-	suite.Require().NoError(init.Prepare(cfg))
+	suite.Require().NoError(init.Prepare())
-	suite.Require().NoError(init.Execute(cfg))
+	suite.Require().NoError(init.Execute())
 	contents, err = ioutil.ReadFile(configFile.Name())
 	suite.Require().NoError(err)
 	suite.Contains(string(contents), "insecure-skip-tls-verify: true")
@@ -116,25 +137,25 @@ func (suite *InitKubeTestSuite) TestPrepareParseError() {
 	defer os.Remove(templateFile.Name())
 	suite.Require().Nil(err)
 
-	init := InitKube{
+	cfg := env.Config{
 		APIServer:   "Sysadmin",
 		Certificate: "CCNA",
-		Token:        "Aspire virtual currency",
+		KubeToken:   "Aspire virtual currency",
-		TemplateFile: templateFile.Name(),
 	}
-	err = init.Prepare(Config{})
+	init := NewInitKube(cfg, templateFile.Name(), "")
+	err = init.Prepare()
 	suite.Error(err)
 	suite.Regexp("could not load kubeconfig .* function .* not defined", err)
 }
 
 func (suite *InitKubeTestSuite) TestPrepareNonexistentTemplateFile() {
-	init := InitKube{
+	cfg := env.Config{
 		APIServer:   "Sysadmin",
 		Certificate: "CCNA",
-		Token:        "Aspire virtual currency",
+		KubeToken:   "Aspire virtual currency",
-		TemplateFile: "/usr/foreign/exclude/kubeprofig.tpl",
 	}
-	err := init.Prepare(Config{})
+	init := NewInitKube(cfg, "/usr/foreign/exclude/kubeprofig.tpl", "")
+	err := init.Prepare()
 	suite.Error(err)
 	suite.Regexp("could not load kubeconfig .* no such file or directory", err)
 }
@@ -143,16 +164,14 @@ func (suite *InitKubeTestSuite) TestPrepareCannotOpenDestinationFile() {
 	templateFile, err := tempfile("kubeconfig********.yml.tpl", "hurgity burgity")
 	defer os.Remove(templateFile.Name())
 	suite.Require().Nil(err)
-	init := InitKube{
+	cfg := env.Config{
 		APIServer:   "Sysadmin",
 		Certificate: "CCNA",
-		Token:        "Aspire virtual currency",
+		KubeToken:   "Aspire virtual currency",
-		TemplateFile: templateFile.Name(),
-		ConfigFile:   "/usr/foreign/exclude/kubeprofig",
 	}
+	init := NewInitKube(cfg, templateFile.Name(), "/usr/foreign/exclude/kubeprofig")
 
-	cfg := Config{}
+	err = init.Prepare()
-	err = init.Prepare(cfg)
 	suite.Error(err)
 	suite.Regexp("could not open .* for writing: .* no such file or directory", err)
 }
@@ -167,24 +186,21 @@ func (suite *InitKubeTestSuite) TestPrepareRequiredConfig() {
 	suite.Require().Nil(err)
 
 	// initial config with all required fields present
-	init := InitKube{
+	cfg := env.Config{
 		APIServer:   "Sysadmin",
 		Certificate: "CCNA",
-		Token:        "Aspire virtual currency",
+		KubeToken:   "Aspire virtual currency",
-		TemplateFile: templateFile.Name(),
-		ConfigFile:   configFile.Name(),
 	}
 
-	cfg := Config{}
+	init := NewInitKube(cfg, templateFile.Name(), configFile.Name())
+	suite.NoError(init.Prepare()) // consistency check; we should be starting in a happy state
 
-	suite.NoError(init.Prepare(cfg)) // consistency check; we should be starting in a happy state
+	init.values.APIServer = ""
+	suite.Error(init.Prepare(), "APIServer should be required.")
 
-	init.APIServer = ""
+	init.values.APIServer = "Sysadmin"
-	suite.Error(init.Prepare(cfg), "APIServer should be required.")
+	init.values.Token = ""
-
+	suite.Error(init.Prepare(), "Token should be required.")
-	init.APIServer = "Sysadmin"
-	init.Token = ""
-	suite.Error(init.Prepare(cfg), "Token should be required.")
 }
 
 func (suite *InitKubeTestSuite) TestPrepareDefaultsServiceAccount() {
@@ -196,18 +212,43 @@ func (suite *InitKubeTestSuite) TestPrepareDefaultsServiceAccount() {
 	defer os.Remove(configFile.Name())
 	suite.Require().Nil(err)
 
-	init := InitKube{
+	cfg := env.Config{
 		APIServer:   "Sysadmin",
 		Certificate: "CCNA",
-		Token:        "Aspire virtual currency",
+		KubeToken:   "Aspire virtual currency",
-		TemplateFile: templateFile.Name(),
+	}
-		ConfigFile:   configFile.Name(),
+	init := NewInitKube(cfg, templateFile.Name(), configFile.Name())
+
+	init.Prepare()
+	suite.Equal("helm", init.values.ServiceAccount)
 }
 
-	cfg := Config{}
+func (suite *InitKubeTestSuite) TestDebugOutput() {
+	templateFile, err := tempfile("kubeconfig********.yml.tpl", "hurgity burgity")
+	defer os.Remove(templateFile.Name())
+	suite.Require().Nil(err)
 
-	init.Prepare(cfg)
+	configFile, err := tempfile("kubeconfig********.yml", "")
-	suite.Equal("helm", init.ServiceAccount)
+	defer os.Remove(configFile.Name())
+	suite.Require().Nil(err)
+
+	stdout := &strings.Builder{}
+	stderr := &strings.Builder{}
+	cfg := env.Config{
+		APIServer: "http://my.kube.server/",
+		KubeToken: "QSBzaW5nbGUgcm9zZQ==",
+		Debug:     true,
+		Stdout:    stdout,
+		Stderr:    stderr,
+	}
+	init := NewInitKube(cfg, templateFile.Name(), configFile.Name())
+	suite.NoError(init.Prepare())
+
+	suite.Contains(stderr.String(), fmt.Sprintf("loading kubeconfig template from %s\n", templateFile.Name()))
+	suite.Contains(stderr.String(), fmt.Sprintf("truncating kubeconfig file at %s\n", configFile.Name()))
+
+	suite.NoError(init.Execute())
+	suite.Contains(stderr.String(), fmt.Sprintf("writing kubeconfig file to %s\n", configFile.Name()))
 }
 
 func tempfile(name, contents string) (*os.File, error) {

internal/run/lint.go

@@ -2,61 +2,67 @@ package run
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 )
 
 // Lint is an execution step that calls `helm lint` when executed.
 type Lint struct {
-	Chart        string
+	*config
-	Values       string
+	chart        string
-	StringValues string
+	values       string
-	ValuesFiles  []string
+	stringValues string
-	Strict       bool
+	valuesFiles  []string
+	strict       bool
 	cmd          cmd
 }
 
+// NewLint creates a Lint using fields from the given Config. No validation is performed at this time.
+func NewLint(cfg env.Config) *Lint {
+	return &Lint{
+		config:       newConfig(cfg),
+		chart:        cfg.Chart,
+		values:       cfg.Values,
+		stringValues: cfg.StringValues,
+		valuesFiles:  cfg.ValuesFiles,
+		strict:       cfg.LintStrictly,
+	}
+}
+
 // Execute executes the `helm lint` command.
-func (l *Lint) Execute(_ Config) error {
+func (l *Lint) Execute() error {
 	return l.cmd.Run()
 }
 
 // Prepare gets the Lint ready to execute.
-func (l *Lint) Prepare(cfg Config) error {
+func (l *Lint) Prepare() error {
-	if l.Chart == "" {
+	if l.chart == "" {
 		return fmt.Errorf("chart is required")
 	}
 
-	args := make([]string, 0)
+	args := l.globalFlags()
-
-	if cfg.Namespace != "" {
-		args = append(args, "--namespace", cfg.Namespace)
-	}
-	if cfg.Debug {
-		args = append(args, "--debug")
-	}
-
 	args = append(args, "lint")
 
-	if l.Values != "" {
+	if l.values != "" {
-		args = append(args, "--set", l.Values)
+		args = append(args, "--set", l.values)
 	}
-	if l.StringValues != "" {
+	if l.stringValues != "" {
-		args = append(args, "--set-string", l.StringValues)
+		args = append(args, "--set-string", l.stringValues)
 	}
-	for _, vFile := range l.ValuesFiles {
+	for _, vFile := range l.valuesFiles {
 		args = append(args, "--values", vFile)
 	}
-	if l.Strict {
+	if l.strict {
 		args = append(args, "--strict")
 	}
 
-	args = append(args, l.Chart)
+	args = append(args, l.chart)
 
 	l.cmd = command(helmBin, args...)
-	l.cmd.Stdout(cfg.Stdout)
+	l.cmd.Stdout(l.stdout)
-	l.cmd.Stderr(cfg.Stderr)
+	l.cmd.Stderr(l.stderr)
 
-	if cfg.Debug {
+	if l.debug {
-		fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", l.cmd.String())
+		fmt.Fprintf(l.stderr, "Generated command: '%s'\n", l.cmd.String())
 	}
 
 	return nil

internal/run/lint_test.go

@@ -1,8 +1,8 @@
 package run
 
 import (
-	"fmt"
 	"github.com/golang/mock/gomock"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/suite"
 	"strings"
 	"testing"
@@ -31,19 +31,36 @@ func TestLintTestSuite(t *testing.T) {
 	suite.Run(t, new(LintTestSuite))
 }
 
+func (suite *LintTestSuite) TestNewLint() {
+	cfg := env.Config{
+		Chart:        "./flow",
+		Values:       "steadfastness,forthrightness",
+		StringValues: "tensile_strength,flexibility",
+		ValuesFiles:  []string{"/root/price_inventory.yml"},
+		LintStrictly: true,
+	}
+	lint := NewLint(cfg)
+	suite.Require().NotNil(lint)
+	suite.Equal("./flow", lint.chart)
+	suite.Equal("steadfastness,forthrightness", lint.values)
+	suite.Equal("tensile_strength,flexibility", lint.stringValues)
+	suite.Equal([]string{"/root/price_inventory.yml"}, lint.valuesFiles)
+	suite.Equal(true, lint.strict)
+	suite.NotNil(lint.config)
+}
+
 func (suite *LintTestSuite) TestPrepareAndExecute() {
 	defer suite.ctrl.Finish()
 
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
 
-	l := Lint{
+	cfg := env.Config{
 		Chart:  "./epic/mychart",
-	}
-	cfg := Config{
 		Stdout: &stdout,
 		Stderr: &stderr,
 	}
+	l := NewLint(cfg)
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
@@ -52,6 +69,7 @@ func (suite *LintTestSuite) TestPrepareAndExecute() {
 		return suite.mockCmd
 	}
 
+	suite.mockCmd.EXPECT().String().AnyTimes()
 	suite.mockCmd.EXPECT().
 		Stdout(&stdout)
 	suite.mockCmd.EXPECT().
@@ -60,9 +78,9 @@ func (suite *LintTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	err := l.Prepare(cfg)
+	err := l.Prepare()
 	suite.Require().Nil(err)
-	l.Execute(cfg)
+	l.Execute()
 }
 
 func (suite *LintTestSuite) TestPrepareRequiresChart() {
@@ -70,25 +88,22 @@ func (suite *LintTestSuite) TestPrepareRequiresChart() {
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
-	cfg := Config{}
+	l := NewLint(env.Config{})
-	l := Lint{}
+	err := l.Prepare()
-
-	err := l.Prepare(cfg)
 	suite.EqualError(err, "chart is required", "Chart should be mandatory")
 }
 
 func (suite *LintTestSuite) TestPrepareWithLintFlags() {
 	defer suite.ctrl.Finish()
 
-	cfg := Config{}
+	cfg := env.Config{
-
-	l := Lint{
 		Chart:        "./uk/top_40",
 		Values:       "width=5",
 		StringValues: "version=2.0",
 		ValuesFiles:  []string{"/usr/local/underrides", "/usr/local/overrides"},
-		Strict:       true,
+		LintStrictly: true,
 	}
+	l := NewLint(cfg)
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
@@ -105,66 +120,8 @@ func (suite *LintTestSuite) TestPrepareWithLintFlags() {
 
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
+	suite.mockCmd.EXPECT().String().AnyTimes()
 
-	err := l.Prepare(cfg)
+	err := l.Prepare()
 	suite.Require().Nil(err)
 }
-
-func (suite *LintTestSuite) TestPrepareWithDebugFlag() {
-	defer suite.ctrl.Finish()
-
-	stderr := strings.Builder{}
-
-	cfg := Config{
-		Debug:  true,
-		Stderr: &stderr,
-	}
-
-	l := Lint{
-		Chart: "./scotland/top_40",
-	}
-
-	command = func(path string, args ...string) cmd {
-		suite.mockCmd.EXPECT().
-			String().
-			Return(fmt.Sprintf("%s %s", path, strings.Join(args, " ")))
-
-		return suite.mockCmd
-	}
-
-	suite.mockCmd.EXPECT().Stdout(gomock.Any())
-	suite.mockCmd.EXPECT().Stderr(&stderr)
-
-	err := l.Prepare(cfg)
-	suite.Require().Nil(err)
-
-	want := fmt.Sprintf("Generated command: '%s --debug lint ./scotland/top_40'\n", helmBin)
-	suite.Equal(want, stderr.String())
-}
-
-func (suite *LintTestSuite) TestPrepareWithNamespaceFlag() {
-	defer suite.ctrl.Finish()
-
-	cfg := Config{
-		Namespace: "table-service",
-	}
-
-	l := Lint{
-		Chart: "./wales/top_40",
-	}
-
-	actual := []string{}
-	command = func(path string, args ...string) cmd {
-		actual = args
-		return suite.mockCmd
-	}
-
-	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
-	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-
-	err := l.Prepare(cfg)
-	suite.Require().Nil(err)
-
-	expected := []string{"--namespace", "table-service", "lint", "./wales/top_40"}
-	suite.Equal(expected, actual)
-}

internal/run/uninstall.go

@@ -2,53 +2,57 @@ package run
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 )
 
 // Uninstall is an execution step that calls `helm uninstall` when executed.
 type Uninstall struct {
-	Release     string
+	*config
-	DryRun      bool
+	release     string
-	KeepHistory bool
+	dryRun      bool
+	keepHistory bool
 	cmd         cmd
 }
 
+// NewUninstall creates an Uninstall using fields from the given Config. No validation is performed at this time.
+func NewUninstall(cfg env.Config) *Uninstall {
+	return &Uninstall{
+		config:      newConfig(cfg),
+		release:     cfg.Release,
+		dryRun:      cfg.DryRun,
+		keepHistory: cfg.KeepHistory,
+	}
+}
+
 // Execute executes the `helm uninstall` command.
-func (u *Uninstall) Execute(_ Config) error {
+func (u *Uninstall) Execute() error {
 	return u.cmd.Run()
 }
 
 // Prepare gets the Uninstall ready to execute.
-func (u *Uninstall) Prepare(cfg Config) error {
+func (u *Uninstall) Prepare() error {
-	if u.Release == "" {
+	if u.release == "" {
 		return fmt.Errorf("release is required")
 	}
 
-	args := make([]string, 0)
+	args := u.globalFlags()
-
-	if cfg.Namespace != "" {
-		args = append(args, "--namespace", cfg.Namespace)
-	}
-	if cfg.Debug {
-		args = append(args, "--debug")
-	}
-
 	args = append(args, "uninstall")
 
-	if u.DryRun {
+	if u.dryRun {
 		args = append(args, "--dry-run")
 	}
-	if u.KeepHistory {
+	if u.keepHistory {
 		args = append(args, "--keep-history")
 	}
 
-	args = append(args, u.Release)
+	args = append(args, u.release)
 
 	u.cmd = command(helmBin, args...)
-	u.cmd.Stdout(cfg.Stdout)
+	u.cmd.Stdout(u.stdout)
-	u.cmd.Stderr(cfg.Stderr)
+	u.cmd.Stderr(u.stderr)
 
-	if cfg.Debug {
+	if u.debug {
-		fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", u.cmd.String())
+		fmt.Fprintf(u.stderr, "Generated command: '%s'\n", u.cmd.String())
 	}
 
 	return nil

internal/run/uninstall_test.go

@@ -1,10 +1,9 @@
 package run
 
 import (
-	"fmt"
 	"github.com/golang/mock/gomock"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/suite"
-	"strings"
 	"testing"
 )
 
@@ -35,12 +34,26 @@ func TestUninstallTestSuite(t *testing.T) {
 	suite.Run(t, new(UninstallTestSuite))
 }
 
+func (suite *UninstallTestSuite) TestNewUninstall() {
+	cfg := env.Config{
+		DryRun:      true,
+		Release:     "jetta_id_love_to_change_the_world",
+		KeepHistory: true,
+	}
+	u := NewUninstall(cfg)
+	suite.Equal("jetta_id_love_to_change_the_world", u.release)
+	suite.Equal(true, u.dryRun)
+	suite.Equal(true, u.keepHistory)
+	suite.NotNil(u.config)
+}
+
 func (suite *UninstallTestSuite) TestPrepareAndExecute() {
 	defer suite.ctrl.Finish()
 
-	u := Uninstall{
+	cfg := env.Config{
 		Release: "zayde_wølf_king",
 	}
+	u := NewUninstall(cfg)
 
 	actual := []string{}
 	command = func(path string, args ...string) cmd {
@@ -58,92 +71,49 @@ func (suite *UninstallTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	cfg := Config{}
+	suite.NoError(u.Prepare())
-	suite.NoError(u.Prepare(cfg))
 	expected := []string{"uninstall", "zayde_wølf_king"}
 	suite.Equal(expected, actual)
 
-	u.Execute(cfg)
+	u.Execute()
 }
 
 func (suite *UninstallTestSuite) TestPrepareDryRunFlag() {
-	u := Uninstall{
+	cfg := env.Config{
 		Release: "firefox_ak_wildfire",
 		DryRun:  true,
 	}
-	cfg := Config{}
+	u := NewUninstall(cfg)
 
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
-	suite.NoError(u.Prepare(cfg))
+	suite.NoError(u.Prepare())
 	expected := []string{"uninstall", "--dry-run", "firefox_ak_wildfire"}
 	suite.Equal(expected, suite.actualArgs)
 }
 
 func (suite *UninstallTestSuite) TestPrepareKeepHistoryFlag() {
-	u := Uninstall{
+	cfg := env.Config{
 		Release:     "perturbator_sentient",
 		KeepHistory: true,
 	}
-	cfg := Config{}
+	u := NewUninstall(cfg)
 
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
-	suite.NoError(u.Prepare(cfg))
+	suite.NoError(u.Prepare())
 	expected := []string{"uninstall", "--keep-history", "perturbator_sentient"}
 	suite.Equal(expected, suite.actualArgs)
 }
 
-func (suite *UninstallTestSuite) TestPrepareNamespaceFlag() {
-	u := Uninstall{
-		Release: "carly_simon_run_away_with_me",
-	}
-	cfg := Config{
-		Namespace: "emotion",
-	}
-
-	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
-	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
-
-	suite.NoError(u.Prepare(cfg))
-	expected := []string{"--namespace", "emotion", "uninstall", "carly_simon_run_away_with_me"}
-	suite.Equal(expected, suite.actualArgs)
-}
-
-func (suite *UninstallTestSuite) TestPrepareDebugFlag() {
-	u := Uninstall{
-		Release: "just_a_band_huff_and_puff",
-	}
-	stderr := strings.Builder{}
-	cfg := Config{
-		Debug:  true,
-		Stderr: &stderr,
-	}
-
-	command = func(path string, args ...string) cmd {
-		suite.mockCmd.EXPECT().
-			String().
-			Return(fmt.Sprintf("%s %s", path, strings.Join(args, " ")))
-
-		return suite.mockCmd
-	}
-
-	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
-	suite.mockCmd.EXPECT().Stderr(&stderr).AnyTimes()
-
-	suite.NoError(u.Prepare(cfg))
-	suite.Equal(fmt.Sprintf("Generated command: '%s --debug "+
-		"uninstall just_a_band_huff_and_puff'\n", helmBin), stderr.String())
-}
-
 func (suite *UninstallTestSuite) TestPrepareRequiresRelease() {
 	// These aren't really expected, but allowing them gives clearer test-failure messages
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
-	u := Uninstall{}
+	u := NewUninstall(env.Config{})
-	err := u.Prepare(Config{})
+	err := u.Prepare()
 	suite.EqualError(err, "release is required", "Uninstall.Release should be mandatory")
 }

internal/run/upgrade.go

@@ -2,94 +2,113 @@ package run
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 )
 
 // Upgrade is an execution step that calls `helm upgrade` when executed.
 type Upgrade struct {
-	Chart   string
+	*config
-	Release string
+	chart   string
+	release string
 
-	ChartVersion  string
+	chartVersion  string
-	DryRun        bool
+	dryRun        bool
-	Wait          bool
+	wait          bool
-	Values        string
+	values        string
-	StringValues  string
+	stringValues  string
-	ValuesFiles   []string
+	valuesFiles   []string
-	ReuseValues   bool
+	reuseValues   bool
-	Timeout       string
+	timeout       string
-	Force         bool
+	force         bool
-	Atomic        bool
+	atomic        bool
-	CleanupOnFail bool
+	cleanupOnFail bool
+	caFile        string
 
 	cmd cmd
 }
 
+// NewUpgrade creates an Upgrade using fields from the given Config. No validation is performed at this time.
+func NewUpgrade(cfg env.Config) *Upgrade {
+	return &Upgrade{
+		config:        newConfig(cfg),
+		chart:         cfg.Chart,
+		release:       cfg.Release,
+		chartVersion:  cfg.ChartVersion,
+		dryRun:        cfg.DryRun,
+		wait:          cfg.Wait,
+		values:        cfg.Values,
+		stringValues:  cfg.StringValues,
+		valuesFiles:   cfg.ValuesFiles,
+		reuseValues:   cfg.ReuseValues,
+		timeout:       cfg.Timeout,
+		force:         cfg.Force,
+		atomic:        cfg.AtomicUpgrade,
+		cleanupOnFail: cfg.CleanupOnFail,
+		caFile:        cfg.RepoCAFile,
+	}
+}
+
 // Execute executes the `helm upgrade` command.
-func (u *Upgrade) Execute(_ Config) error {
+func (u *Upgrade) Execute() error {
 	return u.cmd.Run()
 }
 
 // Prepare gets the Upgrade ready to execute.
-func (u *Upgrade) Prepare(cfg Config) error {
+func (u *Upgrade) Prepare() error {
-	if u.Chart == "" {
+	if u.chart == "" {
 		return fmt.Errorf("chart is required")
 	}
-	if u.Release == "" {
+	if u.release == "" {
 		return fmt.Errorf("release is required")
 	}
 
-	args := make([]string, 0)
+	args := u.globalFlags()
-
-	if cfg.Namespace != "" {
-		args = append(args, "--namespace", cfg.Namespace)
-	}
-	if cfg.Debug {
-		args = append(args, "--debug")
-	}
-
 	args = append(args, "upgrade", "--install")
 
-	if u.ChartVersion != "" {
+	if u.chartVersion != "" {
-		args = append(args, "--version", u.ChartVersion)
+		args = append(args, "--version", u.chartVersion)
 	}
-	if u.DryRun {
+	if u.dryRun {
 		args = append(args, "--dry-run")
 	}
-	if u.Wait {
+	if u.wait {
 		args = append(args, "--wait")
 	}
-	if u.ReuseValues {
+	if u.reuseValues {
 		args = append(args, "--reuse-values")
 	}
-	if u.Timeout != "" {
+	if u.timeout != "" {
-		args = append(args, "--timeout", u.Timeout)
+		args = append(args, "--timeout", u.timeout)
 	}
-	if u.Force {
+	if u.force {
 		args = append(args, "--force")
 	}
-	if u.Atomic {
+	if u.atomic {
 		args = append(args, "--atomic")
 	}
-	if u.CleanupOnFail {
+	if u.cleanupOnFail {
 		args = append(args, "--cleanup-on-fail")
 	}
-	if u.Values != "" {
+	if u.values != "" {
-		args = append(args, "--set", u.Values)
+		args = append(args, "--set", u.values)
 	}
-	if u.StringValues != "" {
+	if u.stringValues != "" {
-		args = append(args, "--set-string", u.StringValues)
+		args = append(args, "--set-string", u.stringValues)
 	}
-	for _, vFile := range u.ValuesFiles {
+	for _, vFile := range u.valuesFiles {
 		args = append(args, "--values", vFile)
 	}
+	if u.caFile != "" {
+		args = append(args, "--ca-file", u.caFile)
+	}
 
-	args = append(args, u.Release, u.Chart)
+	args = append(args, u.release, u.chart)
 	u.cmd = command(helmBin, args...)
-	u.cmd.Stdout(cfg.Stdout)
+	u.cmd.Stdout(u.stdout)
-	u.cmd.Stderr(cfg.Stderr)
+	u.cmd.Stderr(u.stderr)
 
-	if cfg.Debug {
+	if u.debug {
-		fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", u.cmd.String())
+		fmt.Fprintf(u.stderr, "Generated command: '%s'\n", u.cmd.String())
 	}
 
 	return nil

internal/run/upgrade_test.go

@@ -3,6 +3,7 @@ package run
 import (
 	"fmt"
 	"github.com/golang/mock/gomock"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/stretchr/testify/suite"
 	"strings"
 	"testing"
@@ -31,13 +32,48 @@ func TestUpgradeTestSuite(t *testing.T) {
 	suite.Run(t, new(UpgradeTestSuite))
 }
 
+func (suite *UpgradeTestSuite) TestNewUpgrade() {
+	cfg := env.Config{
+		ChartVersion:  "seventeen",
+		DryRun:        true,
+		Wait:          true,
+		Values:        "steadfastness,forthrightness",
+		StringValues:  "tensile_strength,flexibility",
+		ValuesFiles:   []string{"/root/price_inventory.yml"},
+		ReuseValues:   true,
+		Timeout:       "go sit in the corner",
+		Chart:         "billboard_top_100",
+		Release:       "post_malone_circles",
+		Force:         true,
+		AtomicUpgrade: true,
+		CleanupOnFail: true,
+	}
+
+	up := NewUpgrade(cfg)
+	suite.Equal(cfg.Chart, up.chart)
+	suite.Equal(cfg.Release, up.release)
+	suite.Equal(cfg.ChartVersion, up.chartVersion)
+	suite.Equal(true, up.dryRun)
+	suite.Equal(cfg.Wait, up.wait)
+	suite.Equal("steadfastness,forthrightness", up.values)
+	suite.Equal("tensile_strength,flexibility", up.stringValues)
+	suite.Equal([]string{"/root/price_inventory.yml"}, up.valuesFiles)
+	suite.Equal(cfg.ReuseValues, up.reuseValues)
+	suite.Equal(cfg.Timeout, up.timeout)
+	suite.Equal(cfg.Force, up.force)
+	suite.Equal(true, up.atomic)
+	suite.Equal(true, up.cleanupOnFail)
+	suite.NotNil(up.config)
+}
+
 func (suite *UpgradeTestSuite) TestPrepareAndExecute() {
 	defer suite.ctrl.Finish()
 
-	u := Upgrade{
+	cfg := env.Config{
 		Chart:   "at40",
 		Release: "jonas_brothers_only_human",
 	}
+	u := NewUpgrade(cfg)
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
@@ -54,19 +90,20 @@ func (suite *UpgradeTestSuite) TestPrepareAndExecute() {
 		Run().
 		Times(1)
 
-	cfg := Config{}
+	err := u.Prepare()
-	err := u.Prepare(cfg)
 	suite.Require().Nil(err)
-	u.Execute(cfg)
+	u.Execute()
 }
 
 func (suite *UpgradeTestSuite) TestPrepareNamespaceFlag() {
 	defer suite.ctrl.Finish()
 
-	u := Upgrade{
+	cfg := env.Config{
+		Namespace: "melt",
 		Chart:     "at40",
 		Release:   "shaed_trampoline",
 	}
+	u := NewUpgrade(cfg)
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
@@ -78,17 +115,14 @@ func (suite *UpgradeTestSuite) TestPrepareNamespaceFlag() {
 	suite.mockCmd.EXPECT().Stdout(gomock.Any())
 	suite.mockCmd.EXPECT().Stderr(gomock.Any())
 
-	cfg := Config{
+	err := u.Prepare()
-		Namespace: "melt",
-	}
-	err := u.Prepare(cfg)
 	suite.Require().Nil(err)
 }
 
 func (suite *UpgradeTestSuite) TestPrepareWithUpgradeFlags() {
 	defer suite.ctrl.Finish()
 
-	u := Upgrade{
+	cfg := env.Config{
 		Chart:         "hot_ac",
 		Release:       "maroon_5_memories",
 		ChartVersion:  "radio_edit",
@@ -100,11 +134,11 @@ func (suite *UpgradeTestSuite) TestPrepareWithUpgradeFlags() {
 		ReuseValues:   true,
 		Timeout:       "sit_in_the_corner",
 		Force:         true,
-		Atomic:        true,
+		AtomicUpgrade: true,
 		CleanupOnFail: true,
+		RepoCAFile:    "local_ca.cert",
 	}
-
+	u := NewUpgrade(cfg)
-	cfg := Config{}
 
 	command = func(path string, args ...string) cmd {
 		suite.Equal(helmBin, path)
@@ -121,6 +155,7 @@ func (suite *UpgradeTestSuite) TestPrepareWithUpgradeFlags() {
 			"--set-string", "height=5ft10in",
 			"--values", "/usr/local/stats",
 			"--values", "/usr/local/grades",
+			"--ca-file", "local_ca.cert",
 			"maroon_5_memories", "hot_ac"}, args)
 
 		return suite.mockCmd
@@ -129,7 +164,7 @@ func (suite *UpgradeTestSuite) TestPrepareWithUpgradeFlags() {
 	suite.mockCmd.EXPECT().Stdout(gomock.Any())
 	suite.mockCmd.EXPECT().Stderr(gomock.Any())
 
-	err := u.Prepare(cfg)
+	err := u.Prepare()
 	suite.Require().Nil(err)
 }
 
@@ -138,34 +173,30 @@ func (suite *UpgradeTestSuite) TestRequiresChartAndRelease() {
 	suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
 	suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
 
-	u := Upgrade{
+	u := NewUpgrade(env.Config{})
-		Release: "seth_everman_unskippable_cutscene",
+	u.release = "seth_everman_unskippable_cutscene"
-	}
 
-	err := u.Prepare(Config{})
+	err := u.Prepare()
 	suite.EqualError(err, "chart is required", "Chart should be mandatory")
 
-	u = Upgrade{
+	u.release = ""
-		Chart: "billboard_top_zero",
+	u.chart = "billboard_top_zero"
-	}
 
-	err = u.Prepare(Config{})
+	err = u.Prepare()
 	suite.EqualError(err, "release is required", "Release should be mandatory")
 }
 
 func (suite *UpgradeTestSuite) TestPrepareDebugFlag() {
-	u := Upgrade{
-		Chart:   "at40",
-		Release: "lewis_capaldi_someone_you_loved",
-	}
-
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
-	cfg := Config{
+	cfg := env.Config{
+		Chart:   "at40",
+		Release: "lewis_capaldi_someone_you_loved",
 		Debug:   true,
 		Stdout:  &stdout,
 		Stderr:  &stderr,
 	}
+	u := NewUpgrade(cfg)
 
 	command = func(path string, args ...string) cmd {
 		suite.mockCmd.EXPECT().
@@ -180,7 +211,7 @@ func (suite *UpgradeTestSuite) TestPrepareDebugFlag() {
 	suite.mockCmd.EXPECT().
 		Stderr(&stderr)
 
-	u.Prepare(cfg)
+	u.Prepare()
 
 	want := fmt.Sprintf("Generated command: '%s --debug upgrade "+
 		"--install lewis_capaldi_someone_you_loved at40'\n", helmBin)