packer

type BuildOptions struct {
	// Dir is the directory where Packer will be executed from.
	// If this isn't set, it'll default to "#{ctx.Dir}/build"
	Dir string

	// The path to the template to execute. If this isn't set, it'll
	// default to "#{Dir}/template.json"
	TemplatePath string

	// InfraOutputMap is a map to change the key of an infra output
	// to a different key for a Packer variable. The key of this map
	// is the infra output key, and teh value is the Packer variable name.
	InfraOutputMap map[string]string
}

type Output struct {
	Timestamp string
	Target    string
	Type      string
	Data      []string
}

type OutputCallback func(*Output)

type Packer struct {
	// Path is the path to Packer itself. If empty, "packer"
	// will be used and looked up via the PATH var.
	Path string

	// Dir is the working directory where all Packer commands are executed
	Dir string

	// Ui, if given, will be used to stream output from the Packer commands.
	// If this is nil, then the output will be logged but won't be visible
	// to the user.
	Ui ui.Ui

	// Callbacks is a list of callbacks that will be called for certain
	// event types within the output
	Callbacks map[string]OutputCallback

	// Variables is a list of variables to pass to Packer.
	Variables map[string]string
}