segmento/pkg/handler/handler.go

package handler

type AssetType int

const (
	Segment AssetType = 0
	MediaPlaylist
	MasterPlaylist
)

type Asset struct {
	Path        string
	Key         string // should this be passed with the asset? or decided upon by the handler?
	Type        AssetType
	ContentType string
}

type Handler interface {
	AssetAdded(a Asset) error

	// TODO it is probably better to remove this because it will be difficult to ensure
	// that all old assets are always cleaned up (it would be easy for this callback to be missed,
	// for example). Better for implementations to be responsible for cleaning up old files, either
	// using an implementation-specific method (e.g. S3 expiring objects) or just a periodic check.
	AssetRemoved(a Asset) error
}