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vendor/yiisoft/yii2-queue/src/drivers/sync/Queue.php

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+<?php
+/**
+ * @link https://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license https://www.yiiframework.com/license/
+ */
+
+namespace yii\queue\sync;
+
+use Yii;
+use yii\base\Application;
+use yii\base\InvalidArgumentException;
+use yii\queue\Queue as BaseQueue;
+
+/**
+ * Sync Queue.
+ *
+ * @author Roman Zhuravlev <zhuravljov@gmail.com>
+ */
+class Queue extends BaseQueue
+{
+    /**
+     * @var bool
+     */
+    public $handle = false;
+
+    /**
+     * @var array of payloads
+     */
+    private $payloads = [];
+    /**
+     * @var int last pushed ID
+     */
+    private $pushedId = 0;
+    /**
+     * @var int started ID
+     */
+    private $startedId = 0;
+    /**
+     * @var int last finished ID
+     */
+    private $finishedId = 0;
+
+
+    /**
+     * @inheritdoc
+     */
+    public function init()
+    {
+        parent::init();
+        if ($this->handle) {
+            Yii::$app->on(Application::EVENT_AFTER_REQUEST, function () {
+                ob_start();
+                $this->run();
+                ob_end_clean();
+            });
+        }
+    }
+
+    /**
+     * Runs all jobs from queue.
+     */
+    public function run()
+    {
+        while (($payload = array_shift($this->payloads)) !== null) {
+            list($ttr, $message) = $payload;
+            $this->startedId = $this->finishedId + 1;
+            $this->handleMessage($this->startedId, $message, $ttr, 1);
+            $this->finishedId = $this->startedId;
+            $this->startedId = 0;
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function pushMessage($message, $ttr, $delay, $priority)
+    {
+        array_push($this->payloads, [$ttr, $message]);
+        return ++$this->pushedId;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function status($id)
+    {
+        if (!is_int($id) || $id <= 0 || $id > $this->pushedId) {
+            throw new InvalidArgumentException("Unknown messages ID: $id.");
+        }
+
+        if ($id <= $this->finishedId) {
+            return self::STATUS_DONE;
+        }
+
+        if ($id === $this->startedId) {
+            return self::STATUS_RESERVED;
+        }
+
+        return self::STATUS_WAITING;
+    }
+}