/**
* {@inheritdoc}
*
* The translation update functions executed here are batch operations which
* are also used in translation update batches. The batch functions may need
* to be executed multiple times to complete their task, typically this is the
* translation import function. When a batch function is not finished, a new
* queue task is created and added to the end of the queue. The batch context
* data is needed to continue the batch task is stored in the queue with the
* queue data.
*/
public function processItem($data)
{
$this->moduleHandler->loadInclude('locale', 'batch.inc');
list($function, $args) = $data;
// We execute batch operation functions here to check, download and import
// the translation files. Batch functions use a context variable as last
// argument which is passed by reference. When a batch operation is called
// for the first time a default batch context is created. When called
// iterative (usually the batch import function) the batch context is passed
// through via the queue and is part of the $data.
$last = count($args) - 1;
if (!is_array($args[$last]) || !isset($args[$last]['finished'])) {
$batch_context = ['sandbox' => [], 'results' => [], 'finished' => 1, 'message' => ''];
} else {
$batch_context = $args[$last];
unset($args[$last]);
}
$args = array_merge($args, [&$batch_context]);
// Call the batch operation function.
call_user_func_array($function, $args);
// If the batch operation is not finished we create a new queue task to
// continue the task. This is typically the translation import task.
if ($batch_context['finished'] < 1) {
unset($batch_context['strings']);
$this->queue->createItem([$function, $args]);
}
}
/**
* Queues and dequeues a set of items to check the basic queue functionality.
*
* @param \Drupal\Core\Queue\QueueInterface $queue1
* An instantiated queue object.
* @param \Drupal\Core\Queue\QueueInterface $queue2
* An instantiated queue object.
*/
protected function queueTest($queue1, $queue2)
{
// Create four items.
$data = array();
for ($i = 0; $i < 4; $i++) {
$data[] = array($this->randomMachineName() => $this->randomMachineName());
}
// Queue items 1 and 2 in the queue1.
$queue1->createItem($data[0]);
$queue1->createItem($data[1]);
// Retrieve two items from queue1.
$items = array();
$new_items = array();
$items[] = $item = $queue1->claimItem();
$new_items[] = $item->data;
$items[] = $item = $queue1->claimItem();
$new_items[] = $item->data;
// First two dequeued items should match the first two items we queued.
$this->assertEqual($this->queueScore($data, $new_items), 2, 'Two items matched');
// Add two more items.
$queue1->createItem($data[2]);
$queue1->createItem($data[3]);
$this->assertTrue($queue1->numberOfItems(), 'Queue 1 is not empty after adding items.');
$this->assertFalse($queue2->numberOfItems(), 'Queue 2 is empty while Queue 1 has items');
$items[] = $item = $queue1->claimItem();
$new_items[] = $item->data;
$items[] = $item = $queue1->claimItem();
$new_items[] = $item->data;
// All dequeued items should match the items we queued exactly once,
// therefore the score must be exactly 4.
$this->assertEqual($this->queueScore($data, $new_items), 4, 'Four items matched');
// There should be no duplicate items.
$this->assertEqual($this->queueScore($new_items, $new_items), 4, 'Four items matched');
// Delete all items from queue1.
foreach ($items as $item) {
$queue1->deleteItem($item);
}
// Check that both queues are empty.
$this->assertFalse($queue1->numberOfItems(), 'Queue 1 is empty');
$this->assertFalse($queue2->numberOfItems(), 'Queue 2 is empty');
}
/**
* {@inheritdoc}
*
* @todo Call sourceDelete() when changing plugins.
*/
public function onFeedDeleteMultiple(array $feeds)
{
if ($this->configuration['use_pubsubhubbub']) {
foreach ($feeds as $feed) {
$item = array('type' => $this->getPluginId(), 'id' => $feed->id());
// Unsubscribe from feed.
$this->unsubscribeQueue->createItem($item);
}
}
// Remove caches and files for this feeds.
foreach ($feeds as $feed) {
$this->clear($feed);
}
}
/**
* {@inheritdoc}
*/
public function deleteQueueItem($item)
{
return $this->fetchQueue->deleteItem($item);
}