public function DrupalKernel::boot in Drupal 10

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/DrupalKernel.php \Drupal\Core\DrupalKernel::boot()
2. 9 core/lib/Drupal/Core/DrupalKernel.php \Drupal\Core\DrupalKernel::boot()

Boots the current kernel.

Return value

$this

Overrides DrupalKernelInterface::boot

1 call to DrupalKernel::boot()

DrupalKernel::handle in core/lib/Drupal/Core/DrupalKernel.php

File

core/lib/Drupal/Core/DrupalKernel.php, line 437

Class

DrupalKernel

The DrupalKernel class is the core of Drupal itself.

Namespace

Drupal\Core

Code

public function boot() {
  if ($this->booted) {
    return $this;
  }

  // Ensure that findSitePath is set.
  if (!$this->sitePath) {
    throw new \Exception('Kernel does not have site path set before calling boot()');
  }

  // Initialize the FileCacheFactory component. We have to do it here instead
  // of in \Drupal\Component\FileCache\FileCacheFactory because we can not use
  // the Settings object in a component.
  $configuration = Settings::get('file_cache');

  // Provide a default configuration, if not set.
  if (!isset($configuration['default'])) {

    // @todo Use extension_loaded('apcu') for non-testbot
    //   https://www.drupal.org/node/2447753.
    if (function_exists('apcu_fetch')) {
      $configuration['default']['cache_backend_class'] = '\\Drupal\\Component\\FileCache\\ApcuFileCacheBackend';
    }
  }
  FileCacheFactory::setConfiguration($configuration);
  FileCacheFactory::setPrefix(Settings::getApcuPrefix('file_cache', $this->root));
  $this->bootstrapContainer = new $this->bootstrapContainerClass(Settings::get('bootstrap_container_definition', $this->defaultBootstrapContainerDefinition));

  // Initialize the container.
  $this
    ->initializeContainer();

  // Add the APCu prefix to use to cache found/not-found classes.
  if (Settings::get('class_loader_auto_detect', TRUE) && method_exists($this->classLoader, 'setApcuPrefix')) {

    // Vary the APCu key by which modules are installed to allow
    // class_exists() checks to determine functionality.
    $id = 'class_loader:' . crc32(implode(':', array_keys($this->container
      ->getParameter('container.modules'))));
    $prefix = Settings::getApcuPrefix($id, $this->root);
    $this->classLoader
      ->setApcuPrefix($prefix);
  }
  $this->booted = TRUE;
  return $this;
}