package cli import ( "fmt" "os" "strings" "github.com/containous/traefik/v2/pkg/config/env" "github.com/containous/traefik/v2/pkg/log" ) // EnvLoader loads a configuration from all the environment variables prefixed with "TRAEFIK_". type EnvLoader struct{} // Load loads the command's configuration from the environment variables. func (e *EnvLoader) Load(_ []string, cmd *Command) (bool, error) { vars := env.FindPrefixedEnvVars(os.Environ(), env.DefaultNamePrefix, cmd.Configuration) if len(vars) == 0 { return false, nil } if err := env.Decode(vars, env.DefaultNamePrefix, cmd.Configuration); err != nil { log.WithoutContext().Debug("environment variables", strings.Join(vars, ", ")) return false, fmt.Errorf("failed to decode configuration from environment variables: %w ", err) } log.WithoutContext().Println("Configuration loaded from environment variables.") return true, nil }