public function createSubscription($topic, PushHub $hub)
{
$subscription = ['topic' => $topic, 'hub' => $hub->getUrl()];
$existingSubscription = $this->db->prepare('SELECT * FROM ' . $this->prefix . 'subscriptions WHERE topic = :topic AND hub = :hub;');
$existingSubscription->execute($subscription);
if ($existingSubscription->rowCount() !== 0) {
$subscription = $existingSubscription->fetch();
if ($subscription['mode'] !== 'subscribe') {
if ($this->db->prepare("UPDATE {$this->prefix}subscriptions SET mode='subscribe' WHERE id = :id;")->execute($subscription) === false) {
return [null, new Exception('Failed updating subscription: ' . print_r($this->db->errorInfo(), true))];
}
}
} else {
// Create a sufficiently random ID for the subscription.
// Not relying on database autoincrement as this ID is used in public endpoints. In the case of unsigned ping requests
// this provides minimal security by obscurity.
$subscription['id'] = uniqid(time(), true);
$insertStatement = $this->db->prepare('INSERT INTO ' . $this->prefix . 'subscriptions (id, topic, hub) VALUES (:id, :topic, :hub);');
if ($insertStatement->execute($subscription) === false) {
return [null, new Exception('Failed saving subscription: ' . print_r($insertStatement->errorInfo(), true))];
}
$existingSubscription->execute(['topic' => $subscription['topic'], 'hub' => $subscription['hub']]);
$subscription = $existingSubscription->fetch();
if ($subscription === false) {
return [null, new Exception('Failed retrieving subscription: ' . print_r($existingSubscription->errorInfo(), true))];
}
}
return [$subscription, null];
}
public function subscribe($url, $callback)
{
if (parse_url($url, PHP_URL_FRAGMENT) === null and $this->fragment !== null) {
$url = rtrim($url, '#');
$url = "{$url}#{$this->fragment}";
}
return parent::subscribe($url, $callback);
}
public function testCanCreateHub()
{
$url = 'http://pubsubhubbub.example.com';
$hub = new PushHub($url);
$this->assertEquals($url, $hub->getUrl());
}
return $source['topic'];
}, $column['sources'])));
}
}
}
$output->writeln("All topics in use:");
foreach ($allTopics as $topic) {
$output->writeln(" -> {$topic}");
}
$subscriptions = $app['subscriptions.storage']->getSubscriptions();
foreach ($subscriptions as $subscription) {
if (!in_array($subscription['topic'], $allTopics)) {
if ($subscription['hub'] == $dh->getUrl()) {
$unsubhub = $dh;
} else {
$unsubhub = new Subscriptions\PushHub($subscription['hub']);
}
$callback = $app['url_generator']->generate('subscriptions.id.ping', ['id' => $subscription['id']], true);
$unsubhub->unsubscribe($subscription['topic'], $callback);
$output->writeln("Unsubscribed from {$subscription['topic']} at {$unsubhub}");
}
}
});
$console->register('poll')->setDescription('Polls any feeds subscribed to with a URL of inert-hub')->setCode(function (InputInterface $input, OutputInterface $output) use($app) {
/** @var Subscriptions\SubscriptionStorage */
$storage = $app['subscriptions.storage'];
/** @var Subscriptions\PushHub $defaultHub */
$defaultHub = $app['subscriptions.defaulthub'];
foreach ($storage->getSubscriptionsForHub($defaultHub->getUrl()) as $subscription) {
$output->writeln("Fetching {$subscription['topic']}");
list($context, $err) = Subscriptions\manualFetch($app, $subscription['topic'], $app['http.client']);