Mirror task lifecycle to serial console

audit/internal/webui/jobs.go

@@ -9,13 +9,14 @@ import (
 
 // jobState holds the output lines and completion status of an async job.
 type jobState struct {
-	lines   []string
-	done    bool
-	err     string
-	mu      sync.Mutex
-	subs    []chan string
-	cancel  func() // optional cancel function; nil if job is not cancellable
-	logPath string
+	lines        []string
+	done         bool
+	err          string
+	mu           sync.Mutex
+	subs         []chan string
+	cancel       func() // optional cancel function; nil if job is not cancellable
+	logPath      string
+	serialPrefix string
 }
 
 // abort cancels the job if it has a cancel function and is not yet done.
@@ -36,6 +37,9 @@ func (j *jobState) append(line string) {
 	if j.logPath != "" {
 		appendJobLog(j.logPath, line)
 	}
+	if j.serialPrefix != "" {
+		taskSerialWriteLine(j.serialPrefix + line)
+	}
 	for _, ch := range j.subs {
 		select {
 		case ch <- line:
@@ -107,8 +111,11 @@ func (m *jobManager) get(id string) (*jobState, bool) {
 	return j, ok
 }
 
-func newTaskJobState(logPath string) *jobState {
+func newTaskJobState(logPath string, serialPrefix ...string) *jobState {
 	j := &jobState{logPath: logPath}
+	if len(serialPrefix) > 0 {
+		j.serialPrefix = serialPrefix[0]
+	}
 	if logPath == "" {
 		return j
 	}

audit/internal/webui/serial_console.go

@@ -0,0 +1,41 @@
+package webui
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+)
+
+var taskSerialWriteLine = writeTaskSerialLine
+
+func writeTaskSerialLine(line string) {
+	line = strings.TrimSpace(line)
+	if line == "" {
+		return
+	}
+	payload := fmt.Sprintf("%s %s\n", time.Now().UTC().Format("2006-01-02 15:04:05Z"), line)
+	for _, path := range []string{"/dev/ttyS0", "/dev/ttyS1", "/dev/console"} {
+		f, err := os.OpenFile(path, os.O_WRONLY|os.O_APPEND, 0)
+		if err != nil {
+			continue
+		}
+		_, _ = f.WriteString(payload)
+		_ = f.Close()
+		return
+	}
+}
+
+func taskSerialPrefix(t *Task) string {
+	if t == nil {
+		return "[task] "
+	}
+	return fmt.Sprintf("[task %s %s] ", t.ID, t.Name)
+}
+
+func taskSerialEvent(t *Task, event string) {
+	if t == nil {
+		return
+	}
+	taskSerialWriteLine(fmt.Sprintf("%s%s", taskSerialPrefix(t), strings.TrimSpace(event)))
+}

audit/internal/webui/tasks.go

@@ -258,6 +258,7 @@ func (q *taskQueue) enqueue(t *Task) {
 	q.prune()
 	q.persistLocked()
 	q.mu.Unlock()
+	taskSerialEvent(t, "queued")
 	select {
 	case q.trigger <- struct{}{}:
 	default:
@@ -435,7 +436,7 @@ func (q *taskQueue) worker() {
 				t.StartedAt = &now
 				t.DoneAt = nil
 				t.ErrMsg = ""
-				j := newTaskJobState(t.LogPath)
+				j := newTaskJobState(t.LogPath, taskSerialPrefix(t))
 				t.job = j
 				batch = append(batch, t)
 			}
@@ -520,6 +521,11 @@ func (q *taskQueue) finalizeTaskRun(t *Task, j *jobState) {
 	if err := writeTaskReportArtifacts(t); err != nil {
 		appendJobLog(t.LogPath, "WARN: task report generation failed: "+err.Error())
 	}
+	if t.ErrMsg != "" {
+		taskSerialEvent(t, "finished with status="+t.Status+" error="+t.ErrMsg)
+		return
+	}
+	taskSerialEvent(t, "finished with status="+t.Status)
 }
 
 // setCPUGovernor writes the given governor to all CPU scaling_governor sysfs files.
@@ -858,6 +864,7 @@ func (h *handler) handleAPITasksCancel(w http.ResponseWriter, r *http.Request) {
 		now := time.Now()
 		t.DoneAt = &now
 		globalQueue.persistLocked()
+		taskSerialEvent(t, "finished with status="+t.Status)
 		writeJSON(w, map[string]string{"status": "cancelled"})
 	case TaskRunning:
 		if t.job != nil {
@@ -867,6 +874,7 @@ func (h *handler) handleAPITasksCancel(w http.ResponseWriter, r *http.Request) {
 		now := time.Now()
 		t.DoneAt = &now
 		globalQueue.persistLocked()
+		taskSerialEvent(t, "finished with status="+t.Status)
 		writeJSON(w, map[string]string{"status": "cancelled"})
 	default:
 		writeError(w, http.StatusConflict, "task is not running or pending")
@@ -907,6 +915,7 @@ func (h *handler) handleAPITasksCancelAll(w http.ResponseWriter, _ *http.Request
 		case TaskPending:
 			t.Status = TaskCancelled
 			t.DoneAt = &now
+			taskSerialEvent(t, "finished with status="+t.Status)
 			n++
 		case TaskRunning:
 			if t.job != nil {
@@ -914,6 +923,7 @@ func (h *handler) handleAPITasksCancelAll(w http.ResponseWriter, _ *http.Request
 			}
 			t.Status = TaskCancelled
 			t.DoneAt = &now
+			taskSerialEvent(t, "finished with status="+t.Status)
 			n++
 		}
 	}
@@ -932,6 +942,7 @@ func (h *handler) handleAPITasksKillWorkers(w http.ResponseWriter, _ *http.Reque
 		case TaskPending:
 			t.Status = TaskCancelled
 			t.DoneAt = &now
+			taskSerialEvent(t, "finished with status="+t.Status)
 			cancelled++
 		case TaskRunning:
 			if t.job != nil {
@@ -939,6 +950,7 @@ func (h *handler) handleAPITasksKillWorkers(w http.ResponseWriter, _ *http.Reque
 			}
 			t.Status = TaskCancelled
 			t.DoneAt = &now
+			taskSerialEvent(t, "finished with status="+t.Status)
 			cancelled++
 		}
 	}

audit/internal/webui/tasks_test.go

@@ -325,6 +325,49 @@ func TestFinalizeTaskRunCreatesReportFolderAndArtifacts(t *testing.T) {
 	}
 }
 
+func TestTaskLifecycleMirrorsToSerialConsole(t *testing.T) {
+	var lines []string
+	prev := taskSerialWriteLine
+	taskSerialWriteLine = func(line string) { lines = append(lines, line) }
+	t.Cleanup(func() { taskSerialWriteLine = prev })
+
+	dir := t.TempDir()
+	q := &taskQueue{
+		statePath: filepath.Join(dir, "tasks-state.json"),
+		logsDir:   filepath.Join(dir, "tasks"),
+		trigger:   make(chan struct{}, 1),
+	}
+	task := &Task{
+		ID:        "task-serial-1",
+		Name:      "CPU SAT",
+		Target:    "cpu",
+		Status:    TaskPending,
+		CreatedAt: time.Now().UTC(),
+	}
+
+	q.enqueue(task)
+	started := time.Now().UTC()
+	task.Status = TaskRunning
+	task.StartedAt = &started
+	job := newTaskJobState(task.LogPath, taskSerialPrefix(task))
+	job.append("Starting CPU SAT...")
+	job.append("CPU stress duration: 60s")
+	job.finish("")
+	q.finalizeTaskRun(task, job)
+
+	joined := strings.Join(lines, "\n")
+	for _, needle := range []string{
+		"queued",
+		"Starting CPU SAT...",
+		"CPU stress duration: 60s",
+		"finished with status=done",
+	} {
+		if !strings.Contains(joined, needle) {
+			t.Fatalf("serial mirror missing %q in %q", needle, joined)
+		}
+	}
+}
+
 func TestResolveBurnPreset(t *testing.T) {
 	tests := []struct {
 		profile string