108 lines
3.4 KiB
PHP
108 lines
3.4 KiB
PHP
<?php
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/**
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* @file src/Worker/PubSubPublish.php
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*/
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namespace Friendica\Worker;
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use Friendica\App;
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use Friendica\Core\System;
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use Friendica\Core\Config;
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use Friendica\Core\Worker;
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use Friendica\Database\DBM;
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use Friendica\Protocol\OStatus;
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use Friendica\Util\Network;
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use Friendica\Util\DateTimeFormat;
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use dba;
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require_once 'include/items.php';
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class PubSubPublish {
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public static function execute($pubsubpublish_id = 0)
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{
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global $a;
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if ($pubsubpublish_id != 0) {
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self::publish($pubsubpublish_id);
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return;
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}
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// We'll push to each subscriber that has push > 0,
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// i.e. there has been an update (set in notifier.php).
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$subscribers = dba::select('push_subscriber', ['id', 'callback_url'], ["`push` > 0 AND `next_try` < UTC_TIMESTAMP()"]);
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while ($subscriber = dba::fetch($subscribers)) {
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logger("Publish feed to " . $subscriber["callback_url"], LOGGER_DEBUG);
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Worker::add(['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true],
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'PubSubPublish', (int)$subscriber["id"]);
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}
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dba::close($subscribers);
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}
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private static function publish($id) {
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global $a;
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$subscriber = dba::selectFirst('push_subscriber', [], ['id' => $id]);
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if (!DBM::is_result($subscriber)) {
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return;
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}
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/// @todo Check server status with PortableContact::checkServer()
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// Before this can be done we need a way to safely detect the server url.
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logger("Generate feed of user " . $subscriber['nickname']. " to " . $subscriber['callback_url']. " - last updated " . $subscriber['last_update'], LOGGER_DEBUG);
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$last_update = $subscriber['last_update'];
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$params = OStatus::feed($subscriber['nickname'], $last_update);
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if (!$params) {
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return;
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}
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$hmac_sig = hash_hmac("sha1", $params, $subscriber['secret']);
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$headers = ["Content-type: application/atom+xml",
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sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
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System::baseUrl() . '/pubsubhubbub/' . $subscriber['nickname'],
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$subscriber['topic']),
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"X-Hub-Signature: sha1=" . $hmac_sig];
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logger('POST ' . print_r($headers, true) . "\n" . $params, LOGGER_DATA);
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Network::post($subscriber['callback_url'], $params, $headers);
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$ret = $a->get_curl_code();
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$condition = ['id' => $subscriber['id']];
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if ($ret >= 200 && $ret <= 299) {
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logger('Successfully pushed to ' . $subscriber['callback_url']);
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// set last_update to the "created" date of the last item, and reset push=0
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$fields = ['push' => 0, 'next_try' => NULL_DATE, 'last_update' => $last_update];
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dba::update('push_subscriber', $fields, $condition);
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} else {
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logger('Delivery error when pushing to ' . $subscriber['callback_url'] . ' HTTP: ' . $ret);
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// we use the push variable also as a counter, if we failed we
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// increment this until some upper limit where we give up
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$retrial = $subscriber['push'];
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if ($retrial > 14) {
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dba::update('push_subscriber', ['push' => 0, 'next_try' => NULL_DATE], $condition);
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logger('Delivery error: Giving up for ' . $subscriber['callback_url'], LOGGER_DEBUG);
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} else {
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// Calculate the delay until the next trial
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$delay = (($retrial + 3) ** 4) + (rand(1, 30) * ($retrial + 1));
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$next = DateTimeFormat::utc('now + ' . $delay . ' seconds');
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$retrial = $retrial + 1;
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dba::update('push_subscriber', ['push' => $retrial, 'next_try' => $next], $condition);
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logger('Delivery error: Next try (' . $retrial . ') for ' . $subscriber['callback_url'] . ' at ' . $next, LOGGER_DEBUG);
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}
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}
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}
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}
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