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Separate ensureHub into function in FeedSub

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This commit is contained in:
Mikael Nordfeldth 2017-04-27 09:24:12 +02:00
parent 598b51eb7a
commit 853b016a42
1 changed files with 83 additions and 28 deletions
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111
plugins/OStatus/classes/FeedSub.php
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@ -167,35 +167,81 @@ class FeedSub extends Managed_DataObject
*/
public static function ensureFeed($feeduri)
{
$current = self::getKV('uri', $feeduri);
if ($current instanceof FeedSub) {
return $current;
$feedsub = self::getKV('uri', $feeduri);
if ($feedsub instanceof FeedSub) {
if (!empty($feedsub->huburi)) {
// If there is already a huburi we don't
// rediscover it on ensureFeed, call
// ensureHub to do that (compare ->modified
// to see if it might be time to do it).
return $feedsub;
}
if ($feedsub->sub_state !== 'inactive') {
throw new ServerException('Can only ensure WebSub hub for inactive (unsubscribed) feeds.');
}
// If huburi is empty we continue with ensureHub
} else {
// If we don't have that local feed URI
// stored then we create a new DB object.
$feedsub = new FeedSub();
$feedsub->uri = $feeduri;
$feedsub->sub_state = 'inactive';
}
$discover = new FeedDiscovery();
$discover->discoverFromFeedURL($feeduri);
try {
// discover the hub uri
$feedsub->ensureHub();
$huburi = $discover->getHubLink();
if (!$huburi && !common_config('feedsub', 'fallback_hub') && !common_config('feedsub', 'nohub')) {
throw new FeedSubNoHubException();
} catch (FeedSubNoHubException $e) {
// Only throw this exception if we can't handle huburi-less feeds
// (i.e. we have a fallback hub or we can do feed polling (nohub)
if (!common_config('feedsub', 'fallback_hub') && !common_config('feedsub', 'nohub')) {
throw $e;
}
}
$feedsub = new FeedSub();
$feedsub->uri = $feeduri;
$feedsub->huburi = $huburi;
$feedsub->sub_state = 'inactive';
$feedsub->created = common_sql_now();
$feedsub->modified = common_sql_now();
$result = $feedsub->insert();
if ($result === false) {
throw new FeedDBException($feedsub);
if (empty($feedsub->id)) {
// if $feedsub doesn't have an id we'll insert it into the db here
$feedsub->created = common_sql_now();
$feedsub->modified = common_sql_now();
$result = $feedsub->insert();
if ($result === false) {
throw new FeedDBException($feedsub);
}
}
return $feedsub;
}
/**
* ensureHub will only do $this->update if !empty($this->id)
* because otherwise the object has not been created yet.
*/
public function ensureHub()
{
if ($this->sub_state !== 'inactive') {
throw new ServerException('Can only ensure WebSub hub for inactive (unsubscribed) feeds.');
}
$discover = new FeedDiscovery();
$discover->discoverFromFeedURL($this->uri);
$huburi = $discover->getHubLink();
if (empty($huburi)) {
// Will be caught and treated with if statements in regards to
// fallback hub and feed polling (nohub) configuration.
throw new FeedSubNoHubException();
}
$orig = !empty($this->id) ? clone($this) : null;
$this->huburi = $huburi;
if (!empty($this->id)) {
$this->update($orig);
}
}
/**
* Send a subscription request to the hub for this feed.
* The hub will later send us a confirmation POST to /main/push/callback.
@ -250,18 +296,27 @@ class FeedSub extends Managed_DataObject
return;
}
if (empty($this->huburi)) {
if (common_config('feedsub', 'fallback_hub')) {
// No native hub on this feed?
// Use our fallback hub, which handles polling on our behalf.
} else if (common_config('feedsub', 'nohub')) {
// We need a feedpolling plugin (like FeedPoller) active so it will
// set the 'nohub' state to 'inactive' for us.
return;
} else {
if (empty($this->huburi) && !common_config('feedsub', 'fallback_hub')) {
/**
* If the huburi is empty and we don't have a fallback hub,
* there is nowhere we can send an unsubscribe to.
*
* A plugin should handle the FeedSub above and set the proper state
* if there is no hub. (instead of 'nohub' it should be 'inactive' if
* the instance has enabled feed polling for feeds that don't publish
* PuSH/WebSub hubs. FeedPoller is a plugin which enables polling.
*
* Secondly, if we don't have the setting "nohub" enabled (i.e.)
* we're ready to poll ourselves, there is something odd with the
* database, such as a polling plugin that has been disabled.
*/
if (!common_config('feedsub', 'nohub')) {
// TRANS: Server exception.
throw new ServerException(_m('Attempting to end PuSH subscription for feed with no hub.'));
}
return;
}
$this->doSubscribe('unsubscribe');