Cache crawler - run within a certain range of time only

src/base.cls.php

@@ -232,6 +232,7 @@ class Base extends Root
 	## --------------		Crawler		----------------- ##
 	## -------------------------------------------------- ##
 	const O_CRAWLER = 'crawler';
+	const O_CRAWLER_SCHEDULE_TIME = 'crawler-schedule_time';
 	const O_CRAWLER_USLEEP = 'crawler-usleep';
 	const O_CRAWLER_RUN_DURATION = 'crawler-run_duration';
 	const O_CRAWLER_RUN_INTERVAL = 'crawler-run_interval';
@@ -514,6 +515,7 @@ class Base extends Root
 
 		// Crawler
 		self::O_CRAWLER => false,
+		self::O_CRAWLER_SCHEDULE_TIME => '',
 		self::O_CRAWLER_USLEEP => 0,
 		self::O_CRAWLER_RUN_DURATION => 0,
 		self::O_CRAWLER_RUN_INTERVAL => 0,

src/crawler.cls.php

@@ -8,6 +8,8 @@
 
 namespace LiteSpeed;
 
+use \DateTime;
+
 defined('WPINC') || exit();
 
 class Crawler extends Root
@@ -247,6 +249,72 @@ public static function async_handler($manually_run = false)
 		self::start($manually_run);
 	}
 
+	/**
+	 * Check if crawler can run in the choosen time period
+	 *
+	 * @since 6.1
+	 */
+	public static function _crawler_in_schedule_time()
+	{
+		$class_settings = self::cls();
+		$schedule_times = $class_settings->conf(Base::O_CRAWLER_SCHEDULE_TIME, '');
+
+		if ($schedule_times !== '') {
+			$schedule_times = explode(',', $schedule_times);
+
+			if (count($schedule_times) > 0) {
+				$now = time();
+
+				// A single time: e.g. 1, 01, 1:1, 1:01, 1:01:1, or 1:01:01, etc.
+				$time_re = '(\d{1,2}(?::\d{1,2}){0,2}(?i:[AP]M)?)';
+				$re = '/^' . $time_re . '[-]' . $time_re . '$/';
+
+				// Allow parsing times like 1-3, 1AM-3PM, 1aM-3Pm
+				$with_minutes = function ($time) {
+					$has_meridian = stripos($time, 'm');
+					if (preg_match('/:\d/', $time)) {
+						return $time;
+					} else {
+						if ($has_meridian !== false) {
+							$meridian = strtoupper(substr($time, -2));
+							$time_only = substr($time, 0, -2);
+
+							return $time_only . ':00' . $meridian;
+						} else {
+							return $time . ':00';
+						}
+					}
+				};
+
+				foreach ($schedule_times as $time) {
+					$time = trim($time);
+					preg_match($re, $time, $matches);
+
+					if (!$matches) {
+						continue;
+					}
+
+					$start = strtotime($with_minutes($matches[1]));
+					$end = strtotime($with_minutes($matches[2]));
+
+					if (false === $start || false === $end || $start > $end) {
+						continue;
+					}
+
+					// Test start <= now <= end
+					if ($now <= $end && $now >= $start) {
+						return true;
+					}
+				}
+			}
+
+			self::debug('------------crawler schedule time-------------no time period found');
+			return false;
+		} else {
+			return true;
+		}
+	}
+
 	/**
 	 * Proceed crawling
 	 *
@@ -260,6 +328,12 @@ public static function start($manually_run = false)
 			return false;
 		}
 
+		$crawler_is_in_time = self::cls()->_crawler_in_schedule_time();
+		if (!$manually_run && !$crawler_is_in_time) {
+			self::debug('......crawler is NOT allowed at this time......');
+			return false;
+		}
+
 		if ($manually_run) {
 			self::debug('......crawler manually ran......');
 		}

src/lang.cls.php

@@ -251,6 +251,7 @@ public static function title($id)
 			self::O_CDN_CLOUDFLARE => __('Cloudflare API', 'litespeed-cache'),
 
 			self::O_CRAWLER => __('Crawler', 'litespeed-cache'),
+			self::O_CRAWLER_SCHEDULE_TIME => __('Running time', 'litespeed-cache'),
 			self::O_CRAWLER_USLEEP => __('Delay', 'litespeed-cache'),
 			self::O_CRAWLER_RUN_DURATION => __('Run Duration', 'litespeed-cache'),
 			self::O_CRAWLER_RUN_INTERVAL => __('Interval Between Runs', 'litespeed-cache'),

tpl/crawler/settings-general.tpl.php

@@ -28,6 +28,25 @@
 			</td>
 		</tr>
 
+		<tr>
+			<th>
+				<?php $id = Base::O_CRAWLER_SCHEDULE_TIME; ?>
+				<?php $this->title($id); ?>
+			</th>
+			<td>
+				<?php $this->build_input($id); ?>
+				<div class="litespeed-desc">
+					<?php echo __('Specify the crawler running periods.', 'litespeed-cache'); ?>
+					<br />
+					<?php echo sprintf( __('You can add multiple ranges in 24-hour format %s delimited by %s', 'litespeed-cache'), '<code>HH:mm-HH:mm</code>', '<code>,</code>'); ?>
+					<br />
+					<?php echo __('Server time', 'litespeed-cache') . ': <code>'. date('H:m') . '</code>'; ?> 
+					<br />
+					<code>00:00-06:00 , 20:00-23:59, 01:00-05:00</code>
+				</div>
+			</td>
+		</tr>
+
 		<tr>
 			<th>
 				<?php $id = Base::O_CRAWLER_USLEEP; ?>