Class ServiceProvider

Provides users with immediate access to the IServiceProvider bound to this ActorSystem, if any.

Inheritance
object
ServiceProvider
Implements
Inherited Members
Namespace: Akka.DependencyInjection
Assembly: Akka.DependencyInjection.dll
Syntax
[Obsolete("Replaced by the Akka.DependencyInjection.DependencyResolver in Akka.NET v1.4.21. Please switch to that.")]
public sealed class ServiceProvider : IExtension
Remarks

[OBSOLETE] Switch to the DependencyResolver instead.

Constructors

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ServiceProvider(IServiceProvider)

Declaration
public ServiceProvider(IServiceProvider provider)
Parameters
Type Name Description
IServiceProvider provider

Properties

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Provider

The globally scoped IServiceProvider.

Declaration
public IServiceProvider Provider { get; }
Property Value
Type Description
IServiceProvider
Remarks

Per https://docs.microsoft.com/en-us/dotnet/core/extensions/dependency-injection-guidelines - please use the appropriate IServiceScope for your actors and the dependencies they consume. DI is typically not used for long-lived, stateful objects such as actors.

Therefore, injecting transient dependencies via constructors is a bad idea in most cases. You'd be far better off creating a local "request scope" each time your actor processes a message that depends on a transient dependency, such as a database connection, and disposing that scope once the operation is complete.

Actors are not MVC Controllers. Actors can live forever, have the ability to restart, and are often stateful. Be mindful of this as you use this feature or bad things will happen. Akka.NET does not magically manage scopes for you.

Methods

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For(ActorSystem)

Declaration
public static ServiceProvider For(ActorSystem actorSystem)
Parameters
Type Name Description
ActorSystem actorSystem
Returns
Type Description
ServiceProvider
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Props<T>(params object[])

Uses a delegate to dynamically instantiate an actor where some of the constructor arguments are populated via dependency injection and others are not.

Declaration
public Props Props<T>(params object[] args) where T : ActorBase
Parameters
Type Name Description
object[] args

Optional. Any constructor arguments that will be passed into the actor's constructor directly without being resolved by DI first.
Returns
Type Description
Props

A new Props instance which uses DI internally.
Type Parameters
Name Description
T

The type of actor to instantiate.
Remarks

YOU ARE RESPONSIBLE FOR MANAGING THE LIFECYCLE OF YOUR OWN DEPENDENCIES. AKKA.NET WILL NOT ATTEMPT TO DO IT FOR YOU.

Implements

Extension Methods