Initial structure of Queue system, with Redis driver

common/framework/drivers/QueueInterface.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace Rhymix\Framework\Drivers;
+
+/**
+ * The Queue driver interface.
+ */
+interface QueueInterface
+{
+	/**
+	 * Create a new instance of the current Queue driver, using the given settings.
+	 *
+	 * @param array $config
+	 * @return void
+	 */
+	public static function getInstance(array $config): self;
+
+	/**
+	 * Get the human-readable name of this Queue driver.
+	 *
+	 * @return string
+	 */
+	public static function getName(): string;
+
+	/**
+	 * Get the list of configuration fields required by this Queue driver.
+	 *
+	 * @return array
+	 */
+	public static function getRequiredConfig(): array;
+
+	/**
+	 * Get the list of configuration fields optionally used by this Queue driver.
+	 *
+	 * @return array
+	 */
+	public static function getOptionalConfig(): array;
+
+	/**
+	 * Check if this driver is supported on this server.
+	 *
+	 * @return bool
+	 */
+	public static function isSupported(): bool;
+
+	/**
+	 * Add a task.
+	 *
+	 * @param string $handler
+	 * @param ?object $args
+	 * @param ?object $options
+	 * @return int
+	 */
+	public function addTask(string $handler, ?object $args = null, ?object $options = null): int;
+
+	/**
+	 * Get the first task.
+	 *
+	 * @param int $blocking
+	 * @return ?object
+	 */
+	public function getTask(int $blocking = 0): ?object;
+}