The task is started if the previous one failed

Author: evgeek

src/Handler/DatabaseLogging.php

@@ -296,7 +296,7 @@ private function createLaunchObject(array $launch): Launch
         $endTime = $endTime === null ? null : Carbon::parse($endTime);
         $isWorking = (bool)$this->getRowValue($launch, 'is_working');
         $errorCount = (int)$this->getRowValue($launch, 'error_count');
-        $errorText = (string)$this->getRowValue($launch, 'error_text');
+        $errorText = $this->getRowValue($launch, 'error_text');
 
         return new Launch($id, $taskId, $startTime, $endTime, $isWorking, $errorCount, $errorText);
     }

src/Handler/Launch.php

@@ -22,13 +22,13 @@ class Launch
     private $taskId;
     /** @var Carbon */
     private $startTime;
-    /** @var ?Carbon */
+    /** @var Carbon|null */
     private $endTime;
     /** @var bool */
     private $isWorking;
     /** @var int */
     private $errorCount;
-    /** @var string */
+    /** @var string|null */
     private $errorText;
 
     public function __construct(
@@ -38,7 +38,7 @@ public function __construct(
         ?Carbon $endTime,
         bool    $isWorking,
         int     $errorCount,
-        string  $errorText
+        ?string  $errorText
     )
     {
         $this->id = $id;

src/Wrapper/TaskWrapper.php

@@ -109,6 +109,11 @@ public function dispatch(): void
             return;
         }
 
+        if (!$lastLaunch->isWorking && $lastLaunch->errorCount !== 0) {
+            $this->logDebug("The previous launch failed after $lastLaunch->errorCount tries. Restart.");
+            $this->launchTask($startTime);
+            return;
+        }
 
         if ($cronMode === Mode::SINGLE && $this->cron->sameInterval($startTime, $lastLaunch->startTime)) {
             $delay = $startTime->diffInMinutes($lastLaunch->startTime);