Merge branch 'master' into deprecation-warnings

internal/helm/config.go

@@ -17,14 +17,13 @@ var (
 // 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. It may, however, be prefixed with the value in `$PLUGIN_PREFIX`.
+// not have the `PLUGIN_` prefix.
 type Config struct {
 	// Configuration for drone-helm itself
 	Command            string   `envconfig:"HELM_COMMAND"`           // 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 `envconfig:"HELM_REPOS"`             // Call `helm repo add` before the main command
-	Prefix             string   ``                                   // Prefix to use when looking up secret env vars
 	Debug              bool     ``                                   // Generate debug output and pass --debug to all helm commands
 	Values             string   ``                                   // Argument to pass to --set in applicable helm commands
 	StringValues       string   `split_words:"true"`                 // Argument to pass to --set-string in applicable helm commands
@@ -58,18 +57,10 @@ func NewConfig(stdout, stderr io.Writer) (*Config, error) {
 		return nil, err
 	}
 
-	prefix := cfg.Prefix
-
 	if err := envconfig.Process("", &cfg); err != nil {
 		return nil, err
 	}
 
-	if prefix != "" {
-		if err := envconfig.Process(cfg.Prefix, &cfg); err != nil {
-			return nil, err
-		}
-	}
-
 	if justNumbers.MatchString(cfg.Timeout) {
 		cfg.Timeout = fmt.Sprintf("%ss", cfg.Timeout)
 	}