/**
* Starts the database update batch process.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The current request object.
*/
protected function triggerBatch(Request $request)
{
$maintenance_mode = $this->state->get('system.maintenance_mode', FALSE);
// Store the current maintenance mode status in the session so that it can
// be restored at the end of the batch.
$_SESSION['maintenance_mode'] = $maintenance_mode;
// During the update, always put the site into maintenance mode so that
// in-progress schema changes do not affect visiting users.
if (empty($maintenance_mode)) {
$this->state->set('system.maintenance_mode', TRUE);
}
$operations = array();
// Resolve any update dependencies to determine the actual updates that will
// be run and the order they will be run in.
$start = $this->getModuleUpdates();
$updates = update_resolve_dependencies($start);
// Store the dependencies for each update function in an array which the
// batch API can pass in to the batch operation each time it is called. (We
// do not store the entire update dependency array here because it is
// potentially very large.)
$dependency_map = array();
foreach ($updates as $function => $update) {
$dependency_map[$function] = !empty($update['reverse_paths']) ? array_keys($update['reverse_paths']) : array();
}
// Determine updates to be performed.
foreach ($updates as $function => $update) {
if ($update['allowed']) {
// Set the installed version of each module so updates will start at the
// correct place. (The updates are already sorted, so we can simply base
// this on the first one we come across in the above foreach loop.)
if (isset($start[$update['module']])) {
drupal_set_installed_schema_version($update['module'], $update['number'] - 1);
unset($start[$update['module']]);
}
$operations[] = array('update_do_one', array($update['module'], $update['number'], $dependency_map[$function]));
}
}
$post_updates = $this->postUpdateRegistry->getPendingUpdateFunctions();
if ($post_updates) {
// Now we rebuild all caches and after that execute the hook_post_update()
// functions.
$operations[] = ['drupal_flush_all_caches', []];
foreach ($post_updates as $function) {
$operations[] = ['update_invoke_post_update', [$function]];
}
}
$batch['operations'] = $operations;
$batch += array('title' => $this->t('Updating'), 'init_message' => $this->t('Starting updates'), 'error_message' => $this->t('An unrecoverable error has occurred. You can find the error message below. It is advised to copy it to the clipboard for reference.'), 'finished' => array('\\Drupal\\system\\Controller\\DbUpdateController', 'batchFinished'));
batch_set($batch);
// @todo Revisit once https://www.drupal.org/node/2548095 is in.
return batch_process(Url::fromUri('base://results'), Url::fromUri('base://start'));
}
/**
* @covers ::getPendingUpdateFunctions
*/
public function testGetPendingUpdateFunctionsExistingUpdates()
{
$this->setupBasicModules();
$key_value = $this->prophesize(KeyValueStoreInterface::class);
$key_value->get('existing_updates', [])->willReturn(['module_a_post_update_a']);
$key_value = $key_value->reveal();
$update_registry = new UpdateRegistry('vfs://drupal', 'sites/default', ['module_a', 'module_b'], $key_value, FALSE);
$this->assertEquals(array_values(['module_a_post_update_b', 'module_b_post_update_a']), array_values($update_registry->getPendingUpdateFunctions()));
}
