env

Documentation

Index

• type Source
  • func (e *Source) Value(_ context.Context, t *dials.Type) (reflect.Value, error)

Types

type Source

type Source struct {
	Prefix string
}

Source implements the dials.Source interface to set configuration from environment variables.

func (*Source) Value

func (e *Source) Value(_ context.Context, t *dials.Type) (reflect.Value, error)

Value fills in the user-provided config struct using environment variables. It looks up the environment variable to read into a given struct field by using that field's `dialsenv` struct tag if present, then its `dials` tag if present, and finally its name. If the struct field's name is used, Value assumes the name is in Go-style camelCase (e.g., "JSONFilePath") and converts it to UPPER_SNAKE_CASE. (The casing of `dialsenv` and `dials` tags is left unchanged.)