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
library.parsing_cache core/core.services.yml Drupal\Core\Utility\YamlCacheCollector needs_destruction
link_generator core/core.services.yml Drupal\Core\Utility\LinkGenerator
locale.config_manager core/modules/locale/locale.services.yml Drupal\locale\LocaleConfigManager
locale.config_subscriber core/modules/locale/locale.services.yml Drupal\locale\LocaleConfigSubscriber
locale.default.config.storage core/modules/locale/locale.services.yml Drupal\locale\LocaleDefaultConfigStorage
locale.locale_translation_cache_tag core/modules/locale/locale.services.yml Drupal\locale\EventSubscriber\LocaleTranslationCacheTag
locale.plural.formula core/modules/locale/locale.services.yml Drupal\locale\PluralFormula
locale.project core/modules/locale/locale.services.yml Drupal\locale\LocaleProjectStorage
locale.storage core/modules/locale/locale.services.yml Drupal\locale\StringDatabaseStorage backend_overridable
lock core/core.services.yml Drupal\Core\Lock\DatabaseLockBackend backend_overridable
lock.persistent core/core.services.yml Drupal\Core\Lock\PersistentDatabaseLockBackend backend_overridable
logger.advisory_feed_test core/modules/system/tests/modules/advisory_feed_test/advisory_feed_test.services.yml Drupal\advisory_feed_test\TestSystemLoggerChannel
logger.broken core/modules/system/tests/modules/error_service_test/error_service_test.services.yml Drupal\error_service_test\Logger\TestLog logger, backend_overridable
logger.channel.announcements_feed core/modules/announcements_feed/announcements_feed.services.yml
logger.channel.ckeditor5 core/modules/ckeditor5/ckeditor5.services.yml
logger.channel.config_schema sites/development.services.yml
logger.channel.config_schema core/assets/scaffold/files/development.services.yml
logger.channel.contact core/modules/contact/contact.services.yml Drupal\Core\Logger\LoggerChannel
logger.channel.cron core/core.services.yml
logger.channel.default core/core.services.yml
logger.channel.default_content core/core.services.yml
logger.channel.file core/core.services.yml Drupal\Core\Logger\LoggerChannel
logger.channel.form core/core.services.yml
logger.channel.image core/modules/image/image.services.yml
logger.channel.image core/core.services.yml
logger.channel.jsonapi core/modules/jsonapi/jsonapi.services.yml
logger.channel.layout_builder core/modules/layout_builder/layout_builder.services.yml
logger.channel.locale core/modules/locale/locale.services.yml
logger.channel.logger_aware_test core/modules/system/tests/modules/logger_aware_test/logger_aware_test.services.yml
logger.channel.logger_stub core/modules/system/tests/modules/logger_aware_test/logger_aware_test.services.yml Drupal\logger_aware_test\LoggerStub
logger.channel.mail core/core.services.yml
logger.channel.menu core/core.services.yml
logger.channel.migrate_drupal core/modules/migrate_drupal/migrate_drupal.services.yml
logger.channel.package_manager core/modules/package_manager/package_manager.services.yml
logger.channel.package_manager_change_log core/modules/package_manager/package_manager.services.yml
logger.channel.php core/core.services.yml
logger.channel.rest core/modules/rest/rest.services.yml
logger.channel.router core/core.services.yml
logger.channel.security core/core.services.yml
logger.channel.system core/modules/system/system.services.yml
logger.channel.update core/modules/update/update.services.yml
logger.channel.user core/modules/user/user.services.yml
logger.channel.workspaces core/modules/workspaces/workspaces.services.yml
logger.channel_base core/core.services.yml Drupal\Core\Logger\LoggerChannel
logger.dblog core/modules/dblog/dblog.services.yml Drupal\dblog\Logger\DbLog logger, backend_overridable
logger.factory core/core.services.yml Drupal\Core\Logger\LoggerChannelFactory service_collector
logger.log_message_parser core/core.services.yml Drupal\Core\Logger\LogMessageParser
logger.responsive_image core/modules/responsive_image/responsive_image.services.yml
logger.syslog core/modules/syslog/syslog.services.yml Drupal\syslog\Logger\SysLog logger
logger.syslog_test core/modules/syslog/tests/modules/syslog_test/syslog_test.services.yml Drupal\syslog_test\Logger\SysLogFile logger

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