From 03d9784bf682b05e3c4a46eb6cd32f4319e8636b Mon Sep 17 00:00:00 2001
From: Keuin <keuinx@gmail.com>
Date: Sat, 29 Jul 2023 21:27:47 +0800
Subject: Make status field concurrent safe

---
 recording/runner.go |  6 +++---
 recording/task.go   | 19 ++++++++++++-------
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/recording/runner.go b/recording/runner.go
index ca4fe48..9671029 100644
--- a/recording/runner.go
+++ b/recording/runner.go
@@ -42,7 +42,7 @@ var errLiveEnded = errs.NewError(errs.LiveEnded)
 // During the process, its status may change.
 // Note: this method is blocking.
 func (t *RunningTask) runTaskWithAutoRestart() {
-	t.status = StWaiting
+	t.setStatus(StWaiting)
 loop:
 	for {
 		err := tryRunTask(t)
@@ -56,7 +56,7 @@ loop:
 			if !errors.Is(err, errLiveEnded) {
 				t.logger.Error("Temporary error: %v", err)
 			}
-			t.status = StRestarting
+			t.setStatus(StRestarting)
 		default:
 			t.logger.Error("Cannot recover from error: %v", err)
 			break loop
@@ -171,7 +171,7 @@ func tryRunTask(t *RunningTask) error {
 	case nil:
 		// live is started, start recording
 		// (now the watcher should have stopped)
-		t.status = StRecording
+		t.setStatus(StRecording)
 		return func() error {
 			var err error
 			run := true
diff --git a/recording/task.go b/recording/task.go
index d1f9c79..328fe66 100644
--- a/recording/task.go
+++ b/recording/task.go
@@ -14,7 +14,7 @@ import (
 	"time"
 )
 
-type TaskStatus int
+type TaskStatus uint32
 
 const (
 	StNotStarted TaskStatus = iota
@@ -48,7 +48,7 @@ type RunningTask struct {
 	// ctx: the biggest context this task uses. It may create children contexts.
 	ctx context.Context
 	// status: running status
-	status TaskStatus
+	status atomic.Uint32
 	// hookStarted: called asynchronously when the task is started. This won't be called when restarting.
 	hookStarted func()
 	// hookStopped: called asynchronously when the task is stopped. This won't be called when restarting.
@@ -58,8 +58,12 @@ type RunningTask struct {
 	roomTitle atomic.Pointer[string]
 }
 
+func (t *RunningTask) setStatus(status TaskStatus) {
+	t.status.Store(uint32(status))
+}
+
 func (t *RunningTask) GetStatus() TaskStatus {
-	return t.status
+	return TaskStatus(t.status.Load())
 }
 
 func (t *RunningTask) GetRoomTitle() *string {
@@ -73,23 +77,24 @@ func NewRunningTask(
 	hookStopped func(),
 	logger logging.Logger,
 ) *RunningTask {
-	return &RunningTask{
+	t := &RunningTask{
 		TaskConfig:  config,
 		ctx:         ctx,
-		status:      StNotStarted,
 		hookStarted: hookStarted,
 		hookStopped: hookStopped,
 		logger:      logger,
 	}
+	t.setStatus(StNotStarted)
+	return t
 }
 
 func (t *RunningTask) StartTask() error {
-	st := t.status
+	st := t.GetStatus()
 	switch st {
 	case StNotStarted:
 		// TODO real start
 		go func() {
-			defer func() { t.status = StStopped }()
+			defer func() { t.setStatus(StStopped) }()
 			t.hookStarted()
 			defer t.hookStopped()
 			// do the task
-- 
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