printer

type Config interface {
	Filter() *regexp.Regexp
	AggregateIgnoreLabels() provider.StringSet
	Format() OutputFormat
	Writer() io.Writer
	Metrics() []string
	NoHeader() bool
}

type FetcherConfig interface {
	UrlMetricsFetcher() provider.UrlMetricsFetcher
	File() string
	Interval() time.Duration
}

type MetricEntryFetcher interface {
	Entries() <-chan string
	Close() error
}

type OutputFormat string

type Printer interface {
	Print(entry string) error
}