class ProtocolVersionCacheContext in Drupal 8

Defines the ProtocolVersionCacheContext service, for "per protocol" caching.

Useful to differentiate between HTTP/1.1 and HTTP/2.0 responses for example, to allow responses to be optimized for protocol-specific characteristics.

Cache context ID: 'protocol_version'.

Hierarchy

• class \Drupal\Core\Cache\Context\RequestStackCacheContextBase
  • class \Drupal\Core\Cache\Context\ProtocolVersionCacheContext implements CacheContextInterface

1 file declares its use of ProtocolVersionCacheContext

ProtocolVersionCacheContextTest.php in core/tests/Drupal/Tests/Core/Cache/Context/ProtocolVersionCacheContextTest.php

1 string reference to 'ProtocolVersionCacheContext'

core.services.yml in core/core.services.yml

core/core.services.yml

1 service uses ProtocolVersionCacheContext

cache_context.protocol_version in core/core.services.yml

Drupal\Core\Cache\Context\ProtocolVersionCacheContext

File

core/lib/Drupal/Core/Cache/Context/ProtocolVersionCacheContext.php, line 15

Namespace

Drupal\Core\Cache\Context

class ProtocolVersionCacheContext extends RequestStackCacheContextBase implements CacheContextInterface {

  /**
   * {@inheritdoc}
   */
  public static function getLabel() {
    return t('Protocol version');
  }

  /**
   * {@inheritdoc}
   */
  public function getContext() {
    return $this->requestStack
      ->getCurrentRequest()
      ->getProtocolVersion();
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheableMetadata() {
    return new CacheableMetadata();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ProtocolVersionCacheContext::getCacheableMetadata	public	function	Gets the cacheability metadata for the context. Overrides CacheContextInterface::getCacheableMetadata
ProtocolVersionCacheContext::getContext	public	function	Returns the string representation of the cache context. Overrides CacheContextInterface::getContext
ProtocolVersionCacheContext::getLabel	public static	function	Returns the label of the cache context. Overrides CacheContextInterface::getLabel
RequestStackCacheContextBase::$requestStack	protected	property	The request stack.
RequestStackCacheContextBase::__construct	public	function	Constructs a new RequestStackCacheContextBase class.