function handle($data)
{
$topic = $data['topic'];
$atom = $data['atom'];
$pushCallbacks = $data['pushCallbacks'];
assert(is_string($atom));
assert(is_string($topic));
assert(is_array($pushCallbacks));
// Set up distribution for the first n subscribing sites...
// If we encounter an uncatchable error, queue handling should
// automatically re-run the batch, which could lead to some dupe
// distributions.
//
// Worst case is if one of these hubprep entries dies too many
// times and gets dropped; the rest of the batch won't get processed.
try {
$n = 0;
while (count($pushCallbacks) && $n < self::ROLLING_BATCH) {
$n++;
$callback = array_shift($pushCallbacks);
$sub = HubSub::staticGet($topic, $callback);
if (!$sub) {
common_log(LOG_ERR, "Skipping PuSH delivery for deleted(?) consumer {$callback} on {$topic}");
continue;
}
$sub->distribute($atom);
}
} catch (Exception $e) {
common_log(LOG_ERR, "Exception during PuSH batch out: " . $e->getMessage() . " prepping {$topic} to {$callback}");
}
// And re-queue the rest of the batch!
if (count($pushCallbacks) > 0) {
$sub = new HubSub();
$sub->topic = $topic;
$sub->bulkDistribute($atom, $pushCallbacks);
}
return true;
}
/**
* Queue up direct feed update pushes to subscribers on our internal hub.
* If there are a large number of subscriber sites, intermediate bulk
* distribution triggers may be queued.
*
* @param string $atom update feed, containing only new/changed items
* @param HubSub $sub open query of subscribers
*/
function pushFeedInternal($atom, $sub)
{
common_log(LOG_INFO, "Preparing {$sub->N} PuSH distribution(s) for {$sub->topic}");
$n = 0;
$batch = array();
while ($sub->fetch()) {
$n++;
if ($n < self::MAX_UNBATCHED) {
$sub->distribute($atom);
} else {
$batch[] = $sub->callback;
if (count($batch) >= self::BATCH_SIZE) {
$sub->bulkDistribute($atom, $batch);
$batch = array();
}
}
}
if (count($batch) >= 0) {
$sub->bulkDistribute($atom, $batch);
}
}
