Services - main - drupal

Introduction to services

A "service" (such as accessing the database, sending email, or translating user interface text) can be defined by a module or Drupal core. Defining a service means giving it a name and designating a default class to provide the service; ideally, there should also be an interface that defines the methods that may be called. Services are collected into the Dependency Injection Container, and can be overridden to use different classes or different instantiation by modules. See the Services and Dependency Injection Container topic for details.

Some services have tags, which are defined in the service definition. Tags are used to define a group of related services, or to specify some aspect of how the service behaves. See the Service Tags topic for more information.

See also

Services and Dependency Injection Container

Service Tags

File

core/core.api.php, line 912

Title File name Summary All service tags
Drupal\package_manager\Validator\PhpExtensionsValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\PhpTufValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\RsyncValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\SandboxDatabaseUpdatesValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\SandboxDirectoryValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\SettingsValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\SupportedReleaseValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\SymlinkValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager\Validator\WritableFileSystemValidator core/modules/package_manager/package_manager.services.yml
Drupal\package_manager_bypass\LoggingBeginner core/modules/package_manager/tests/modules/package_manager_bypass/package_manager_bypass.services.yml
Drupal\package_manager_bypass\LoggingCommitter core/modules/package_manager/tests/modules/package_manager_bypass/package_manager_bypass.services.yml
Drupal\package_manager_test_validation\TestExecutableFinder core/modules/package_manager/tests/modules/package_manager_test_validation/package_manager_test_validation.services.yml
Drupal\path\EventSubscriber\DefaultContentSubscriber core/modules/path/path.services.yml
Drupal\path_alias\AliasPathMatcher core/modules/path_alias/path_alias.services.yml
Drupal\performance_test\DatabaseEventEnabler core/modules/system/tests/modules/performance_test/performance_test.services.yml http_middleware
Drupal\performance_test\PerformanceDataCollector core/modules/system/tests/modules/performance_test/performance_test.services.yml event_subscriber, needs_destruction
Drupal\responsive_image\ResponsiveImageBuilder core/modules/responsive_image/responsive_image.services.yml
Drupal\services_defaults_test\TestInjection core/modules/system/tests/modules/services_defaults_test/services_defaults_test.services.yml
Drupal\services_defaults_test\TestInjection2 core/modules/system/tests/modules/services_defaults_test/services_defaults_test.services.yml zee.bang, bar.tag2
Drupal\services_defaults_test\TestPrivateService core/modules/system/tests/modules/services_defaults_test/services_defaults_test.services.yml
Drupal\services_defaults_test\TestService core/modules/system/tests/modules/services_defaults_test/services_defaults_test.services.yml
Drupal\system\Theme\SystemAdminThemePreprocess core/modules/system/system.services.yml Drupal\system\Theme\SystemAdminThemePreprocess
Drupal\text\TextSummary core/modules/text/text.services.yml
Drupal\update\MailHandler core/modules/update/update.services.yml
Drupal\user_route_alter_test\Routing\RouteSubscriber core/modules/serialization/tests/modules/user_route_alter_test/user_route_alter_test.services.yml
Drupal\views\ContextualLinksHelper core/modules/views/views.services.yml
Drupal\views\ViewsConfigUpdater core/modules/views/views.services.yml
Drupal\workspaces\EventSubscriber\WorkspaceSwitchSubscriber core/modules/workspaces/workspaces.services.yml
Drupal\workspaces\Provider\DefaultWorkspaceProvider core/modules/workspaces/workspaces.services.yml
Drupal\workspaces\Provider\WorkspaceProviderCollector core/modules/workspaces/workspaces.services.yml
Drupal\workspaces\WorkspacesCron core/modules/workspaces/workspaces.services.yml
dynamic_page_cache_deny_admin_routes core/modules/dynamic_page_cache/dynamic_page_cache.services.yml Drupal\dynamic_page_cache\PageCache\ResponsePolicy\DenyAdminRoutes dynamic_page_cache_response_policy
dynamic_page_cache_request_policy core/modules/dynamic_page_cache/dynamic_page_cache.services.yml Drupal\dynamic_page_cache\PageCache\RequestPolicy\DefaultRequestPolicy service_collector
dynamic_page_cache_response_policy core/modules/dynamic_page_cache/dynamic_page_cache.services.yml Drupal\Core\PageCache\ChainResponsePolicy service_collector
dynamic_page_cache_subscriber core/modules/dynamic_page_cache/dynamic_page_cache.services.yml Drupal\dynamic_page_cache\EventSubscriber\DynamicPageCacheSubscriber
early_rendering_controller_wrapper_subscriber core/core.services.yml Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber
early_translation_test.authentication.early_translation_test core/modules/locale/tests/modules/early_translation_test/early_translation_test.services.yml Drupal\early_translation_test\Auth authentication_provider
editor.config_translation_mapper_subscriber core/modules/editor/editor.services.yml Drupal\editor\EventSubscriber\EditorConfigTranslationSubscriber
element.editor core/modules/editor/editor.services.yml Drupal\editor\Element
element_info core/core.services.yml Alias of plugin.manager.element_info
email.validator core/core.services.yml Drupal\Component\Utility\EmailValidator
entity.autocomplete_matcher core/core.services.yml Drupal\Core\Entity\EntityAutocompleteMatcher
entity.bundle_config_import_validator core/core.services.yml Drupal\Core\Entity\Event\BundleConfigImportValidate
entity.definition_update_manager core/core.services.yml Drupal\Core\Entity\EntityDefinitionUpdateManager
entity.form_builder core/core.services.yml Drupal\Core\Entity\EntityFormBuilder
entity.last_installed_schema.repository core/core.services.yml Drupal\Core\Entity\EntityLastInstalledSchemaRepository
entity.memory_cache core/core.services.yml Drupal\Core\Cache\MemoryCache\LruMemoryCache
entity.query.config core/core.services.yml Drupal\Core\Config\Entity\Query\QueryFactory
entity.query.keyvalue core/core.services.yml Drupal\Core\Entity\KeyValueStore\Query\QueryFactory
entity.query.null core/core.services.yml Drupal\Core\Entity\Query\Null\QueryFactory

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