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OStatus: do PuSH subscription setup from subscribe/join event hooks, so resubscribing directly from a profile/group list works correctly if there aren't active subscriptions at the moment.

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This commit is contained in:
Brion Vibber 2010-02-23 20:44:27 +00:00
parent c79c70ea2c
commit 90d34b26c6
4 changed files with 127 additions and 66 deletions
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4
lib/activity.php
View File

@ -823,7 +823,9 @@ class Activity
if ($namespace) {
$attrs = array('xmlns' => 'http://www.w3.org/2005/Atom',
'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0');
'xmlns:georss' => 'http://www.georss.org/georss',
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0',
'xmlns:poco' => 'http://portablecontacts.net/spec/1.0');
} else {
$attrs = array();
}

158
plugins/OStatus/OStatusPlugin.php
View File

@ -251,58 +251,6 @@ class OStatusPlugin extends Plugin
return true;
}
/**
* Notify remote server and garbage collect unused feeds on unsubscribe.
* @fixme send these operations to background queues
*
* @param User $user
* @param Profile $other
* @return hook return value
*/
function onEndUnsubscribe($profile, $other)
{
$user = User::staticGet('id', $profile->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
if (empty($oprofile)) {
return true;
}
// Drop the PuSH subscription if there are no other subscribers.
if ($other->subscriberCount() == 0) {
common_log(LOG_INFO, "Unsubscribing from now-unused feed $oprofile->feeduri");
$oprofile->unsubscribe();
}
$act = new Activity();
$act->verb = ActivityVerb::UNFOLLOW;
$act->id = TagURI::mint('unfollow:%d:%d:%s',
$profile->id,
$other->id,
common_date_iso8601(time()));
$act->time = time();
$act->title = _("Unfollow");
$act->content = sprintf(_("%s stopped following %s."),
$profile->getBestName(),
$other->getBestName());
$act->actor = ActivityObject::fromProfile($profile);
$act->object = ActivityObject::fromProfile($other);
$oprofile->notifyActivity($act);
return true;
}
/**
* Make sure necessary tables are filled out.
*/
@ -366,6 +314,50 @@ class OStatusPlugin extends Plugin
}
}
/**
* When about to subscribe to a remote user, start a server-to-server
* PuSH subscription if needed. If we can't establish that, abort.
*
* @fixme If something else aborts later, we could end up with a stray
* PuSH subscription. This is relatively harmless, though.
*
* @param Profile $subscriber
* @param Profile $other
*
* @return hook return code
*
* @throws Exception
*/
function onStartSubscribe($subscriber, $other)
{
$user = User::staticGet('id', $subscriber->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
if (empty($oprofile)) {
return true;
}
if (!$oprofile->subscribe()) {
throw new Exception(_m('Could not set up remote subscription.'));
}
}
/**
* Having established a remote subscription, send a notification to the
* remote OStatus profile's endpoint.
*
* @param Profile $subscriber
* @param Profile $other
*
* @return hook return code
*
* @throws Exception
*/
function onEndSubscribe($subscriber, $other)
{
$user = User::staticGet('id', $subscriber->id);
@ -403,6 +395,54 @@ class OStatusPlugin extends Plugin
return true;
}
/**
* Notify remote server and garbage collect unused feeds on unsubscribe.
* @fixme send these operations to background queues
*
* @param User $user
* @param Profile $other
* @return hook return value
*/
function onEndUnsubscribe($profile, $other)
{
$user = User::staticGet('id', $profile->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
if (empty($oprofile)) {
return true;
}
// Drop the PuSH subscription if there are no other subscribers.
$oprofile->garbageCollect();
$act = new Activity();
$act->verb = ActivityVerb::UNFOLLOW;
$act->id = TagURI::mint('unfollow:%d:%d:%s',
$profile->id,
$other->id,
common_date_iso8601(time()));
$act->time = time();
$act->title = _("Unfollow");
$act->content = sprintf(_("%s stopped following %s."),
$profile->getBestName(),
$other->getBestName());
$act->actor = ActivityObject::fromProfile($profile);
$act->object = ActivityObject::fromProfile($other);
$oprofile->notifyActivity($act);
return true;
}
/**
* When one of our local users tries to join a remote group,
* notify the remote server. If the notification is rejected,
@ -418,6 +458,10 @@ class OStatusPlugin extends Plugin
{
$oprofile = Ostatus_profile::staticGet('group_id', $group->id);
if ($oprofile) {
if (!$oprofile->subscribe()) {
throw new Exception(_m('Could not set up remote group membership.'));
}
$member = Profile::staticGet($user->id);
$act = new Activity();
@ -439,7 +483,8 @@ class OStatusPlugin extends Plugin
if ($oprofile->notifyActivity($act)) {
return true;
} else {
throw new ServerException(_m("Failed joining remote group."));
$oprofile->garbageCollect();
throw new Exception(_m("Failed joining remote group."));
}
}
}
@ -464,12 +509,7 @@ class OStatusPlugin extends Plugin
$oprofile = Ostatus_profile::staticGet('group_id', $group->id);
if ($oprofile) {
// Drop the PuSH subscription if there are no other subscribers.
$members = $group->getMembers(0, 1);
if ($members->N == 0) {
common_log(LOG_INFO, "Unsubscribing from now-unused group feed $oprofile->feeduri");
$oprofile->unsubscribe();
}
$oprofile->garbageCollect();
$member = Profile::staticGet($user->id);

5
plugins/OStatus/actions/ostatussub.php
View File

@ -324,11 +324,6 @@ class OStatusSubAction extends Action
// And subscribe the current user to the local profile
$user = common_current_user();
if (!$this->oprofile->subscribe()) {
$this->showForm(_m("Failed to set up server-to-server subscription."));
return;
}
if ($this->oprofile->isGroup()) {
$group = $this->oprofile->localGroup();
if ($user->isMember($group)) {

26
plugins/OStatus/classes/Ostatus_profile.php
View File

@ -346,6 +346,29 @@ class Ostatus_profile extends Memcached_DataObject
}
}
/**
* Check if this remote profile has any active local subscriptions, and
* if not drop the PuSH subscription feed.
*
* @return boolean
*/
public function garbageCollect()
{
if ($this->isGroup()) {
$members = $this->localGroup()->getMembers(0, 1);
$count = $members->N;
} else {
$count = $this->localProfile()->subscriberCount();
}
if ($count == 0) {
common_log(LOG_INFO, "Unsubscribing from now-unused remote feed $oprofile->feeduri");
$this->unsubscribe();
return true;
} else {
return false;
}
}
/**
* Send an Activity Streams notification to the remote Salmon endpoint,
* if so configured.
@ -379,7 +402,8 @@ class Ostatus_profile extends Memcached_DataObject
'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
'xmlns:thr' => 'http://purl.org/syndication/thread/1.0',
'xmlns:georss' => 'http://www.georss.org/georss',
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0');
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0',
'xmlns:poco' => 'http://portablecontacts.net/spec/1.0');
$entry = new XMLStringer();
$entry->elementStart('entry', $attributes);