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PuSH 0.4: No outgoing 'sync' verifications. Feed renewal script. No auto-renewal.

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Among other things (such as permanent subscriptions), Pubsubhubbub 0.4
removed the "sync" verification method. This means that any incoming
PuSH subscription requests that follow the 0.4 spec won't really
_require_that we handle it as a background process, but if we were to
try direct verification of the subscription - and fail - there's no way
we could  pick up the ball again. So _essentially_ we require background
processing with retries.

This means we must implement something like the "poorman cron" or
similar, so background processing can be handled
on-demand/on-site-visit. This is how Friendica, Drupal etc. handles it
and is necessary for environments where we can't run separate queue
daemons.

When the poorman-cron-ish thing is implemented, auto-renewal will work
for all users.

PuSH 0.4 spec:
    https://pubsubhubbub.googlecode.com/git/pubsubhubbub-core-0.4.html
More on PuSH 0.4 release (incl. breaking changes):
    https://groups.google.com/forum/#!msg/pubsubhubbub/7RPlYMds4RI/2mIHQTdV3aoJ
This commit is contained in:
Mikael Nordfeldth
2013-11-02 20:02:28 +01:00
parent 2cecfe8f82
commit ab4113168f
5 changed files with 86 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
plugins/OStatus/classes/FeedSub.php
View File

@@ -30,8 +30,6 @@ if (!defined('STATUSNET')) {
PuSH subscription flow:
$profile->subscribe()
generate random verification token
save to verify_token
sends a sub request to the hub...
main/push/callback
@@ -69,7 +67,6 @@ class FeedSub extends Managed_DataObject
// PuSH subscription data
public $huburi;
public $secret;
public $verify_token;
public $sub_state; // subscribe, active, unsubscribe, inactive
public $sub_start;
public $sub_end;
@@ -85,7 +82,6 @@ class FeedSub extends Managed_DataObject
'id' => array('type' => 'serial', 'not null' => true, 'description' => 'FeedSub local unique id'),
'uri' => array('type' => 'varchar', 'not null' => true, 'length' => 255, 'description' => 'FeedSub uri'),
'huburi' => array('type' => 'text', 'description' => 'FeedSub hub-uri'),
'verify_token' => array('type' => 'text', 'description' => 'FeedSub verify-token'),
'secret' => array('type' => 'text', 'description' => 'FeedSub stored secret'),
'sub_state' => array('type' => 'enum("subscribe","active","unsubscribe","inactive")', 'not null' => true, 'description' => 'subscription state'),
'sub_start' => array('type' => 'datetime', 'description' => 'subscription start'),
@@ -168,10 +164,10 @@ class FeedSub extends Managed_DataObject
* @return bool true on success, false on failure
* @throws ServerException if feed state is not valid
*/
public function subscribe($mode='subscribe')
public function subscribe()
{
if ($this->sub_state && $this->sub_state != 'inactive') {
common_log(LOG_WARNING, "Attempting to (re)start PuSH subscription to $this->uri in unexpected state $this->sub_state");
common_log(LOG_WARNING, "Attempting to (re)start PuSH subscription to {$this->uri} in unexpected state {$this->sub_state}");
}
if (empty($this->huburi)) {
if (common_config('feedsub', 'fallback_hub')) {
@@ -202,7 +198,7 @@ class FeedSub extends Managed_DataObject
*/
public function unsubscribe() {
if ($this->sub_state != 'active') {
common_log(LOG_WARNING, "Attempting to (re)end PuSH subscription to $this->uri in unexpected state $this->sub_state");
common_log(LOG_WARNING, "Attempting to (re)end PuSH subscription to {$this->uri} in unexpected state {$this->sub_state}");
}
if (empty($this->huburi)) {
if (common_config('feedsub', 'fallback_hub')) {
@@ -248,10 +244,29 @@ class FeedSub extends Managed_DataObject
}
}
static public function renewalCheck()
{
$fs = new FeedSub();
// the "" empty string check is because we historically haven't saved unsubscribed feeds as NULL
$fs->whereAdd('sub_end IS NOT NULL AND sub_end!="" AND sub_end < NOW() - INTERVAL 1 day');
if ($fs->find() === false) {
throw new NoResultException($fs);
}
return $fs;
}
public function renew()
{
$this->subscribe();
}
/**
* @return boolean true on successful sub/unsub, false on failure
*/
protected function doSubscribe($mode)
{
$this->query('BEGIN');
$orig = clone($this);
$this->verify_token = common_random_hexstr(16);
if ($mode == 'subscribe') {
$this->secret = common_random_hexstr(32);
}
@@ -264,8 +279,7 @@ class FeedSub extends Managed_DataObject
$headers = array('Content-Type: application/x-www-form-urlencoded');
$post = array('hub.mode' => $mode,
'hub.callback' => $callback,
'hub.verify' => 'sync',
'hub.verify_token' => $this->verify_token,
'hub.verify' => 'async', // TODO: deprecated, remove when noone uses PuSH <0.4
'hub.secret' => $this->secret,
'hub.topic' => $this->uri);
$client = new HTTPClient();
@@ -286,30 +300,26 @@ class FeedSub extends Managed_DataObject
$response = $client->post($hub, $headers, $post);
$status = $response->getStatus();
if ($status == 202) {
$this->query('COMMIT');
common_log(LOG_INFO, __METHOD__ . ': sub req ok, awaiting verification callback');
return true;
} else if ($status == 204) {
common_log(LOG_INFO, __METHOD__ . ': sub req ok and verified');
return true;
} else if ($status >= 200 && $status < 300) {
common_log(LOG_ERR, __METHOD__ . ": sub req returned unexpected HTTP $status: " . $response->getBody());
return false;
} else {
common_log(LOG_ERR, __METHOD__ . ": sub req failed with HTTP $status: " . $response->getBody());
return false;
}
$this->query('ROLLBACK');
} catch (Exception $e) {
$this->query('ROLLBACK');
// wtf!
common_log(LOG_ERR, __METHOD__ . ": error \"{$e->getMessage()}\" hitting hub $this->huburi subscribing to $this->uri");
$orig = clone($this);
$this->verify_token = '';
$this->sub_state = 'inactive';
$this->update($orig);
unset($orig);
return false;
}
return false;
}
/**
@@ -318,7 +328,7 @@ class FeedSub extends Managed_DataObject
*
* @param int $lease_seconds provided hub.lease_seconds parameter, if given
*/
public function confirmSubscribe($lease_seconds=0)
public function confirmSubscribe($lease_seconds)
{
$original = clone($this);
@@ -327,7 +337,7 @@ class FeedSub extends Managed_DataObject
if ($lease_seconds > 0) {
$this->sub_end = common_sql_date(time() + $lease_seconds);
} else {
$this->sub_end = null;
$this->sub_end = null; // Backwards compatibility to StatusNet (PuSH <0.4 supported permanent subs)
}
$this->modified = common_sql_now();
@@ -343,7 +353,6 @@ class FeedSub extends Managed_DataObject
$original = clone($this);
// @fixme these should all be null, but DB_DataObject doesn't save null values...?????
$this->verify_token = '';
$this->secret = '';
$this->sub_state = '';
$this->sub_start = '';