return error from datastore.Close func

cmd/fathom/main.go

@@ -60,6 +60,6 @@ func before(c *cli.Context) error {
 }
 
 func after(c *cli.Context) error {
-	app.database.Close()
-	return nil
+	err := app.database.Close()
+	return err
 }

pkg/datastore/datastore.go

@@ -51,7 +51,7 @@ type Datastore interface {
 	GetAggregatedReferrerStatsPageviews(time.Time, time.Time) (int, error)
 
 	// misc
-	Close()
+	Close() error
 }
 
 // New instantiates a new datastore from the given configuration struct

pkg/datastore/sqlstore/sqlstore.go

@@ -62,6 +62,6 @@ func (db *sqlstore) Migrate() {
 }
 
 // Closes the db pool
-func (db *sqlstore) Close() {
-	db.DB.Close()
+func (db *sqlstore) Close() error {
+	return db.DB.Close()
 }