First Local Commit - After Clean up.

Signed-off-by: Rick Hays <rhays@haysgang.com>

system/Throttle/ThrottlerInterface.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 British Columbia Institute of Technology
+ * Copyright (c) 2019 CodeIgniter Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ */
+
+namespace CodeIgniter\Throttle;
+
+/**
+ * Expected behavior of a Throttler
+ */
+interface ThrottlerInterface
+{
+
+	/**
+	 * Restricts the number of requests made by a single key within
+	 * a set number of seconds.
+	 *
+	 * Example:
+	 *
+	 *  if (! $throttler->checkIPAddress($request->ipAddress(), 60, MINUTE))
+	 * {
+	 *      die('You submitted over 60 requests within a minute.');
+	 * }
+	 *
+	 * @param string  $key      The name to use as the "bucket" name.
+	 * @param integer $capacity The number of requests the "bucket" can hold
+	 * @param integer $seconds  The time it takes the "bucket" to completely refill
+	 * @param integer $cost     The number of tokens this action uses.
+	 *
+	 * @return boolean
+	 */
+	public function check(string $key, int $capacity, int $seconds, int $cost);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the number of seconds until the next available token will
+	 * be released for usage.
+	 *
+	 * @return integer
+	 */
+	public function getTokenTime(): int;
+}