revid: add Burst method to revid

cmd/rv/main.go

@@ -54,7 +54,6 @@ USAGE
 package main
 
 import (
-	"fmt"
 	"io"
 	"os"
 	"runtime/pprof"
@@ -199,7 +198,8 @@ func run(rv *revid.Revid, ns *netsender.Sender, l *logger.Logger, nl *netlogger.
 				continue
 			}
 		case modeBurst:
-			err = burst(l, rv, ns)
+			dur := time.Duration(rv.Config().BurstPeriod) * time.Second
+			err = rv.Burst(dur)
 			if err != nil {
 				l.Log(logger.Warning, pkg+"could not start burst", "error", err.Error())
 				ns.SetMode(modePaused, &vs)
@@ -254,21 +254,3 @@ func readPin(rv *revid.Revid) func(pin *netsender.Pin) error {
 		return nil
 	}
 }
-
-// burst starts revid, waits for time specified in the Config.BurstPeriod
-// field, and then stops revid.
-//
-// TODO: move this functionality to the revid API into a Revid.Burst(time) method.
-func burst(l *logger.Logger, r *revid.Revid, s *netsender.Sender) error {
-	l.Log(logger.Info, pkg+"starting burst")
-
-	err := r.Start()
-	if err != nil {
-		return fmt.Errorf("could not start revid: %w", err)
-	}
-
-	time.Sleep(time.Duration(r.Config().BurstPeriod) * time.Second)
-	l.Log(logger.Info, pkg+"stopping burst")
-	r.Stop()
-	return nil
-}

revid/revid.go

@@ -492,6 +492,21 @@ func (r *Revid) Stop() {
 	r.running = false
 }
 
+// Burst starts revid, waits for time specified, and then stops revid.
+func (r *Revid) Burst(duration time.Duration) error {
+	r.cfg.Logger.Log(logger.Info, pkg+"starting burst")
+
+	err := r.Start()
+	if err != nil {
+		return fmt.Errorf("could not start revid: %w", err)
+	}
+
+	time.Sleep(duration)
+	r.cfg.Logger.Log(logger.Info, pkg+"stopping burst")
+	r.Stop()
+	return nil
+}
+
 func (r *Revid) IsRunning() bool {
 	r.mu.Lock()
 	defer r.mu.Unlock()