miscs (Interro02) : horizontal cutting resolution

copienator_gui/batch_monitor.py

@@ -0,0 +1,81 @@
+"""Non-blocking, cancellable batch checks while the desktop GUI is open."""
+
+import queue
+
+from .runner import ProcessRunner
+
+CHECK_INTERVAL_MS = 5 * 60 * 1000
+
+
+class BatchMonitor:
+    def __init__(self, scheduler, on_ready, on_status, on_output):
+        self.scheduler = scheduler
+        self.on_ready = on_ready
+        self.on_status = on_status
+        self.on_output = on_output
+        self.active = False
+        self.timer = None
+        self.runner = None
+
+    def start(self, command, cwd, environment, log_path):
+        if self.active:
+            return
+        self.arguments = (command, cwd, environment, log_path)
+        self.active = True
+        self._check()
+
+    def stop(self):
+        self.active = False
+        if self.timer is not None:
+            self.scheduler.after_cancel(self.timer)
+            self.timer = None
+        if self.runner is not None:
+            try:
+                self.runner.force_stop()
+            except OSError as exc:
+                self.on_output(f"Arrêt de la vérification : {exc}\n")
+            self.runner = None
+        self.on_status("Vérification automatique arrêtée.")
+
+    def _later(self):
+        self.timer = self.scheduler.after(CHECK_INTERVAL_MS, self._check)
+
+    def _check(self):
+        self.timer = None
+        if not self.active:
+            return
+        self.runner = ProcessRunner()
+        self.on_status("Vérification des batchs en cours…")
+        try:
+            self.runner.start(*self.arguments)
+        except (OSError, RuntimeError) as exc:
+            self.on_output(f"Vérification impossible : {exc}\n")
+            self.runner = None
+            self.on_status("Échec de la vérification. Nouvel essai dans 5 minutes.")
+            self._later()
+            return
+        self.timer = self.scheduler.after(100, self._poll)
+
+    def _poll(self):
+        self.timer = None
+        if not self.active or self.runner is None:
+            return
+        while True:
+            try:
+                event, payload = self.runner.events.get_nowait()
+            except queue.Empty:
+                break
+            if event in {"output", "runner_error"}:
+                self.on_output(str(payload))
+            elif event == "finished":
+                code, interrupted = payload
+                self.runner = None
+                if code == 0 and not interrupted:
+                    self.active = False
+                    self.on_status("Tous les résultats batch sont prêts.")
+                    self.on_ready()
+                else:
+                    self.on_status("Résultats pas encore prêts. Nouvelle vérification dans 5 minutes.")
+                    self._later()
+                return
+        self.timer = self.scheduler.after(100, self._poll)