ubtypes

type Backup struct {
	Started time.Time
	Target  BackupTarget
}

type BackupTarget struct {
	ServiceName   string // storage is partitioned by service name
	Snapshotter   Snapshotter
	TaskId        string // instance/container/... ID to discern multiple replicas or process lifecycles if needed
	FileExtension string // ".sql" | ".tar" etc to identify what's inside compression+encryption wrapping
}

type Snapshotter interface {
	// describes, for logging purposes, how the snapshot will be obtained
	Describe() string
	// snapshots a target into a sink. usable only once.
	CreateSnapshot(snapshotSink io.Writer) error
}