91 lines
2.9 KiB
PHP
91 lines
2.9 KiB
PHP
<?php
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/** @license MIT
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* Copyright 2017 J. King, Dustin Wilson et al.
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* See LICENSE and AUTHORS files for details */
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declare(strict_types=1);
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namespace JKingWeb\Arsse;
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use JKingWeb\Arsse\Misc\Date;
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class Service {
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public const DRIVER_NAMES = [
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'serial' => \JKingWeb\Arsse\Service\Serial\Driver::class,
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'subprocess' => \JKingWeb\Arsse\Service\Subprocess\Driver::class,
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];
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/** @var Service\Driver */
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protected $drv;
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public function __construct() {
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$driver = Arsse::$conf->serviceDriver;
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$this->drv = new $driver();
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}
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public function watch(bool $loop = true): \DateTimeInterface {
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$t = new \DateTime();
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do {
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$this->checkIn();
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static::cleanupPre();
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$list = Arsse::$db->feedListStale();
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if ($list) {
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$this->drv->queue(...$list);
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unset($list);
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$this->drv->exec();
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$this->drv->clean();
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}
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static::cleanupPost();
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$t->add(Arsse::$conf->serviceFrequency);
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// @codeCoverageIgnoreStart
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if ($loop) {
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do {
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@time_sleep_until($t->getTimestamp());
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} while ($t->getTimestamp() > time());
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}
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// @codeCoverageIgnoreEnd
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} while ($loop);
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return $t;
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}
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public function checkIn(): bool {
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return Arsse::$db->metaSet("service_last_checkin", time(), "datetime");
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}
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public static function hasCheckedIn(): bool {
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$checkin = Arsse::$db->metaGet("service_last_checkin");
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// if the service has never checked in, return false
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if (!$checkin) {
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return false;
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}
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// convert the check-in timestamp to a DateTime instance
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$checkin = Date::normalize($checkin, "sql");
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// get the checking interval
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$int = Arsse::$conf->serviceFrequency;
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// subtract twice the checking interval from the current time to yield the earliest acceptable check-in time
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$limit = new \DateTime();
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$limit->sub($int);
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$limit->sub($int);
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// return whether the check-in time is within the acceptable limit
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return $checkin >= $limit;
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}
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public static function cleanupPre(): bool {
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// mark unsubscribed feeds as orphaned and delete orphaned feeds that are beyond their retention period
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Arsse::$db->feedCleanup();
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// do the same for icons
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Arsse::$db->iconCleanup();
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// delete expired log-in sessions
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Arsse::$db->sessionCleanup();
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return true;
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}
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public static function cleanupPost(): bool {
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// delete old articles, according to configured thresholds
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$deleted = Arsse::$db->articleCleanup();
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// if any articles were deleted, perform database maintenance
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if ($deleted) {
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Arsse::$db->driverMaintenance();
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}
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return true;
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}
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}
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