marshal time.Duration as json string

pkg/scrape/manager.go

@@ -66,14 +66,14 @@ func (c *Config) From(app *config.App) {
 	c.Scrapers = make([]scraper.Config, len(app.Scrape.Sources))
 	for i := range app.Scrape.Sources {
 		c.Scrapers[i] = scraper.Config{
-			Past:     app.Scrape.Past,
+			Past:     time.Duration(app.Scrape.Past),
 			Name:     app.Scrape.Sources[i].Name,
-			Interval: app.Scrape.Sources[i].Interval,
+			Interval: time.Duration(app.Scrape.Sources[i].Interval),
 			Labels:   model.Labels{},
 		}
 		c.Scrapers[i].Labels.FromMap(app.Scrape.Sources[i].Labels)
 		if c.Scrapers[i].Interval <= 0 {
-			c.Scrapers[i].Interval = app.Scrape.Interval
+			c.Scrapers[i].Interval = time.Duration(app.Scrape.Interval)
 		}
 		if app.Scrape.Sources[i].RSS != nil {
 			c.Scrapers[i].RSS = &scraper.ScrapeSourceRSS{

pkg/scrape/scraper/scraper.go

@@ -55,7 +55,7 @@ const maxPast = 15 * 24 * time.Hour
 
 func (c *Config) Validate() error {
 	if c.Past <= 0 {
-		c.Past = 3 * timeutil.Day
+		c.Past = timeutil.Day
 	}
 	if c.Past > maxPast {
 		c.Past = maxPast