src/cpl_core/dependency_injection/scope.py

@@ -0,0 +1,18 @@
+
+from cpl_core.console.console import Console
+from cpl_core.dependency_injection.scope_abc import ScopeABC
+from cpl_core.dependency_injection.service_provider_abc import ServiceProviderABC
+
+
+class Scope(ScopeABC):
+
+    def __init__(self, service_provider: ServiceProviderABC):
+        self._service_provider = service_provider
+        self._service_provider.set_scope(self)
+
+    @property
+    def service_provider(self) -> ServiceProviderABC:
+        return self._service_provider
+    
+    def dispose(self):
+        self._service_provider = None

src/cpl_core/dependency_injection/scope_abc.py

@@ -0,0 +1,24 @@
+from abc import ABC, abstractmethod
+
+class ScopeABC(ABC):
+    r"""ABC for the class :class:`cpl_core.dependency_injection.scope.Scope`"""
+    
+    def __init__(self):
+        pass
+    
+    @property
+    @abstractmethod
+    def service_provider(self):
+        r"""Returns to service provider of scope
+
+        Returns
+        -------
+            Object of type :class:`cpl_core.dependency_injection.service_provider_abc.ServiceProviderABC`
+        """
+        pass
+    
+    @abstractmethod
+    def dispose():
+        r"""Sets service_provider to None
+        """
+        pass

src/cpl_core/dependency_injection/scope_builder.py

@@ -0,0 +1,19 @@
+from cpl_core.dependency_injection.scope import Scope
+from cpl_core.dependency_injection.scope_abc import ScopeABC
+from cpl_core.dependency_injection.service_provider_abc import ServiceProviderABC
+
+
+class ScopeBuilder:
+    r"""Class to build :class:`cpl_core.dependency_injection.scope.Scope`"""
+    
+    def __init__(self, service_provider: ServiceProviderABC) -> None:
+        self._service_provider = service_provider
+    
+    def build(self) -> ScopeABC:
+        r"""Returns scope
+
+        Returns
+        -------
+            Object of type :class:`cpl_core.dependency_injection.scope.Scope`
+        """
+        return Scope(self._service_provider)

src/cpl_core/dependency_injection/service_lifetime_enum.py

@@ -4,5 +4,5 @@ from enum import Enum
 class ServiceLifetimeEnum(Enum):
 
     singleton = 0
-    scoped = 1  # not supported yet
+    scoped = 1
     transient = 2

src/cpl_core/dependency_injection/service_provider.py

@@ -1,10 +1,13 @@
 from collections import Callable
+import copy
 from inspect import signature, Parameter
 from typing import Optional
 
 from cpl_core.configuration.configuration_abc import ConfigurationABC
 from cpl_core.configuration.configuration_model_abc import ConfigurationModelABC
 from cpl_core.database.context.database_context_abc import DatabaseContextABC
+from cpl_core.dependency_injection.scope_abc import ScopeABC
+from cpl_core.dependency_injection.scope_builder import ScopeBuilder
 from cpl_core.dependency_injection.service_provider_abc import ServiceProviderABC
 from cpl_core.dependency_injection.service_descriptor import ServiceDescriptor
 from cpl_core.dependency_injection.service_lifetime_enum import ServiceLifetimeEnum
@@ -30,6 +33,7 @@ class ServiceProvider(ServiceProviderABC):
         self._service_descriptors: list[ServiceDescriptor] = service_descriptors
         self._configuration: ConfigurationABC = config
         self._database_context = db_context
+        self._scope: Optional[ScopeABC] = None
 
     def _find_service(self, service_type: type) -> ServiceDescriptor:
         for descriptor in self._service_descriptors:
@@ -85,7 +89,14 @@ class ServiceProvider(ServiceProviderABC):
 
         return service_type(*params)
     
-    def get_service(self, service_type: type) -> Optional[Callable]:
+    def set_scope(self, scope: ScopeABC):
+        self._scope = scope
+    
+    def create_scope(self) -> ScopeABC:
+        sb = ScopeBuilder(ServiceProvider(copy.deepcopy(self._service_descriptors), self._configuration, self._database_context))
+        return sb.build()
+
+    def get_service(self, service_type: type) -> Optional[Callable[object]]:
         result = self._find_service(service_type)
 
         if result is None:
@@ -95,7 +106,7 @@ class ServiceProvider(ServiceProviderABC):
             return result.implementation
 
         implementation = self.build_service(service_type)
-        if result.lifetime == ServiceLifetimeEnum.singleton:
+        if result.lifetime == ServiceLifetimeEnum.singleton or result.lifetime == ServiceLifetimeEnum.scoped and self._scope is not None:
             result.implementation = implementation
 
         return implementation

src/cpl_core/dependency_injection/service_provider_abc.py

@@ -2,6 +2,8 @@ from abc import abstractmethod, ABC
 from collections import Callable
 from typing import Type, Optional
 
+from cpl_core.dependency_injection.scope_abc import ScopeABC
+
 
 class ServiceProviderABC(ABC):
     r"""ABC for the class :class:`cpl_core.dependency_injection.service_provider.ServiceProvider`"""
@@ -26,7 +28,28 @@ class ServiceProviderABC(ABC):
         pass
     
     @abstractmethod
-    def get_service(self, instance_type: Type) -> Optional[Callable]:
+    def set_scope(self, scope: ScopeABC):
+        r"""Sets the scope of service provider
+
+        Parameter
+        ---------
+            scope :class:`cpl_core.dependency_injection.scope.Scope`
+                Service scope
+        """
+        pass
+    
+    @abstractmethod
+    def create_scope(self) -> ScopeABC:
+        r"""Creates a service scope
+
+        Returns
+        -------
+            Object of type :class:`cpl_core.dependency_injection.scope.Scope`
+        """
+        pass
+
+    @abstractmethod
+    def get_service(self, instance_type: Type) -> Optional[Callable[object]]:
         r"""Returns instance of given type
 
         Parameter

src/tests/custom/di/appsettings.json

@@ -0,0 +1,15 @@
+{
+  "TimeFormatSettings": {
+    "DateFormat": "%Y-%m-%d",
+    "TimeFormat": "%H:%M:%S",
+    "DateTimeFormat": "%Y-%m-%d %H:%M:%S.%f",
+    "DateTimeLogFormat": "%Y-%m-%d_%H-%M-%S"
+  },
+
+  "LoggingSettings": {
+    "Path": "logs/",
+    "Filename": "log_$start_time.log",
+    "ConsoleLogLevel": "ERROR",
+    "FileLogLevel": "WARN"
+  }
+}

src/tests/custom/di/cpl-workspace.json

@@ -0,0 +1,9 @@
+{
+  "WorkspaceSettings": {
+    "DefaultProject": "di",
+    "Projects": {
+      "di": "src/di/di.json"
+    },
+    "Scripts": {}
+  }
+}

src/tests/custom/di/src/di/__init__.py

@@ -0,0 +1 @@
+# imports: 

src/tests/custom/di/src/di/application.py

@@ -0,0 +1,45 @@
+from cpl_core.application import ApplicationABC
+from cpl_core.configuration import ConfigurationABC
+from cpl_core.console.console import Console
+from cpl_core.dependency_injection import ServiceProviderABC
+from cpl_core.dependency_injection.scope import Scope
+from test_service_service import TestService
+from di_tester_service import DITesterService
+
+
+class Application(ApplicationABC):
+
+    def __init__(self, config: ConfigurationABC, services: ServiceProviderABC):
+        ApplicationABC.__init__(self, config, services)
+
+    def _part_of_scoped(self):
+        ts: TestService = self._services.get_service(TestService)
+        ts.run()
+        
+    def configure(self):
+        pass
+
+    def main(self):
+        Console.write_line('Scope1')
+        scope1: Scope = self._services.create_scope()
+        ts: TestService = scope1.service_provider.get_service(TestService)
+        ts.run()
+        dit: DITesterService = scope1.service_provider.get_service(DITesterService)
+        dit.run()
+        t = scope1
+        b = t.service_provider
+        scope1.dispose()
+        
+        Console.write_line('Disposed:')
+        ts1: TestService = scope1.service_provider.get_service(TestService)
+        ts1.run()
+        
+        Console.write_line('Scope2')
+        scope2: Scope = self._services.create_scope()
+        ts: TestService = scope2.service_provider.get_service(TestService)
+        ts.run()
+        dit: DITesterService = scope2.service_provider.get_service(DITesterService)
+        dit.run()
+        
+        Console.write_line('Global')
+        self._part_of_scoped()

src/tests/custom/di/src/di/di.json

@@ -0,0 +1,43 @@
+{
+  "ProjectSettings": {
+    "Name": "di",
+    "Version": {
+      "Major": "0",
+      "Minor": "0",
+      "Micro": "0"
+    },
+    "Author": "",
+    "AuthorEmail": "",
+    "Description": "",
+    "LongDescription": "",
+    "URL": "",
+    "CopyrightDate": "",
+    "CopyrightName": "",
+    "LicenseName": "",
+    "LicenseDescription": "",
+    "Dependencies": [
+      "sh_cpl>=2021.10.0.post1"
+    ],
+    "PythonVersion": ">=3.9.2",
+    "PythonPath": {
+      "linux": ""
+    },
+    "Classifiers": []
+  },
+  "BuildSettings": {
+    "ProjectType": "console",
+    "SourcePath": "",
+    "OutputPath": "../../dist",
+    "Main": "di.main",
+    "EntryPoint": "di",
+    "IncludePackageData": false,
+    "Included": [],
+    "Excluded": [
+      "*/__pycache__",
+      "*/logs",
+      "*/tests"
+    ],
+    "PackageData": {},
+    "ProjectReferences": []
+  }
+}

src/tests/custom/di/src/di/di_tester_service.py

@@ -0,0 +1,12 @@
+from cpl_core.console.console import Console
+from test_service_service import TestService
+
+
+class DITesterService:
+
+    def __init__(self, ts: TestService):
+        self._ts = ts
+    
+    def run(self):
+        Console.write_line('DIT: ')
+        self._ts.run()

src/tests/custom/di/src/di/main.py

@@ -0,0 +1,14 @@
+from cpl_core.application import ApplicationBuilder
+
+from di.application import Application
+from di.startup import Startup
+
+
+def main():
+    app_builder = ApplicationBuilder(Application)
+    app_builder.use_startup(Startup)
+    app_builder.build().run()
+
+
+if __name__ == '__main__':
+    main()

src/tests/custom/di/src/di/startup.py

@@ -0,0 +1,21 @@
+from cpl_core.application import StartupABC
+from cpl_core.configuration import ConfigurationABC
+from cpl_core.dependency_injection import ServiceProviderABC, ServiceCollectionABC
+from cpl_core.environment import ApplicationEnvironment
+from test_service_service import TestService
+from di_tester_service import DITesterService
+
+
+class Startup(StartupABC):
+
+    def __init__(self):
+        StartupABC.__init__(self)
+
+    def configure_configuration(self, configuration: ConfigurationABC, environment: ApplicationEnvironment) -> ConfigurationABC:
+        return configuration
+
+    def configure_services(self, services: ServiceCollectionABC, environment: ApplicationEnvironment) -> ServiceProviderABC:
+        services.add_scoped(TestService)
+        services.add_scoped(DITesterService)
+        
+        return services.build_service_provider()

src/tests/custom/di/src/di/test_service_service.py

@@ -0,0 +1,13 @@
+import string
+from cpl_core.console.console import Console
+from cpl_core.utils.string import String
+
+
+class TestService:
+
+    def __init__(self):
+        self._name = String.random_string(string.ascii_lowercase, 8)
+    
+    
+    def run(self):
+        Console.write_line(f'Im {self._name}')

src/tests/custom/di/src/tests/__init__.py

@@ -0,0 +1 @@
+# imports: