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Added logic to load singletons when requested not when registered

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This commit is contained in:
Sven Heidemann
2022-05-24 17:51:17 +02:00
parent cf305aeebb
commit 1c94fb5bd1
3 changed files with 20 additions and 24 deletions
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35
src/cpl_core/dependency_injection/service_collection.py
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@@ -1,5 +1,7 @@
from typing import Union, Type, Callable, Optional
import lifetime as lifetime
from cpl_core.configuration.configuration_abc import ConfigurationABC
from cpl_core.database.database_settings import DatabaseSettings
from cpl_core.database.context.database_context_abc import DatabaseContextABC
@@ -37,6 +39,14 @@ class ServiceCollection(ServiceCollectionABC):
self._service_descriptors.append(ServiceDescriptor(service, lifetime))
def _add_descriptor_by_lifetime(self, service_type: Type, lifetime: ServiceLifetimeEnum, service: Callable = None):
if service is not None:
self._add_descriptor(service, lifetime)
else:
self._add_descriptor(service_type, lifetime)
return self
def add_db_context(self, db_context_type: Type[DatabaseContextABC], db_settings: DatabaseSettings):
self.add_singleton(DatabaseContextABC, db_context_type)
self._database_context = self.build_service_provider().get_service(DatabaseContextABC)
@@ -46,34 +56,15 @@ class ServiceCollection(ServiceCollectionABC):
self.add_singleton(LoggerABC, Logger)
def add_singleton(self, service_type: Union[type, object], service: Union[type, object] = None):
impl = None
if service is not None:
if isinstance(service, type):
impl = self.build_service_provider().build_service(service)
self._add_descriptor(impl, ServiceLifetimeEnum.singleton)
else:
if isinstance(service_type, type):
impl = self.build_service_provider().build_service(service_type)
self._add_descriptor(impl, ServiceLifetimeEnum.singleton)
self._add_descriptor_by_lifetime(service_type, ServiceLifetimeEnum.singleton, service)
return self
def add_scoped(self, service_type: Type, service: Callable = None):
if service is not None:
self._add_descriptor(service, ServiceLifetimeEnum.scoped)
else:
self._add_descriptor(service_type, ServiceLifetimeEnum.scoped)
self._add_descriptor_by_lifetime(service_type, ServiceLifetimeEnum.scoped, service)
return self
def add_transient(self, service_type: type, service: type = None):
if service is not None:
self._add_descriptor(service, ServiceLifetimeEnum.transient)
else:
self._add_descriptor(service_type, ServiceLifetimeEnum.transient)
self._add_descriptor_by_lifetime(service_type, ServiceLifetimeEnum.transient, service)
return self
def build_service_provider(self) -> ServiceProviderABC: