function DrupalKernel::getContainerCacheKey

Returns the container cache key based on the environment.

The 'environment' consists of:

• The kernel environment string.
• The Drupal version constant.
• The deployment identifier from settings.php. This allows custom deployments to force a container rebuild.
• The operating system running PHP. This allows compiler passes to optimize services for different operating systems.
• The paths to any additional container YAMLs from settings.php.

Return value

string The cache key used for the service container.

File

core/lib/Drupal/Core/DrupalKernel.php, line 840

Class

DrupalKernel

The DrupalKernel class is the core of Drupal itself.

Namespace

Code

protected function getContainerCacheKey() {
    $parts = [
        'service_container',
        $this->environment,
        \Drupal::VERSION,
        Settings::get('deployment_identifier'),
        PHP_OS,
        serialize(Settings::get('container_yamls')),
    ];
    return implode(':', $parts);
}