Packages

c

play.api.libs.concurrent

CustomExecutionContext

abstract class CustomExecutionContext extends ExecutionContextExecutor

This class defines a custom execution context that delegates to an akka.actor.ActorSystem.

It is very useful for situations in which the default execution context should not be used, for example if a database or blocking I/O is being used.

To define a custom context, subclass CustomExecutionContext with the dispatcher name:

@Singleton
class DatabaseExecutionContext @Inject()(system: ActorSystem)
   extends CustomExecutionContext(system, "database-dispatcher")

and then bind it in dependency injection:

bind[DatabaseExecutionContext].to(classOf[DatabaseExecutionContext]).asEagerSingleton()

Then have the execution context passed in as an implicit parameter:

class DatabaseService @Inject()(implicit executionContext: DatabaseExecutionContext) {
  ...
}
Source
CustomExecutionContext.scala
See also

Dispatchers

Thread Pools

Linear Supertypes
ExecutionContextExecutor, Executor, ExecutionContext, AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. CustomExecutionContext
  2. ExecutionContextExecutor
  3. Executor
  4. ExecutionContext
  5. AnyRef
  6. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new CustomExecutionContext(system: ActorSystem, name: String)

    system

    the actor system

    name

    the full path of the dispatcher name in Typesafe Config.

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  8. def execute(command: Runnable): Unit
    Definition Classes
    CustomExecutionContext → Executor → ExecutionContext
  9. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  10. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  16. def reportFailure(cause: Throwable): Unit
    Definition Classes
    CustomExecutionContext → ExecutionContext
  17. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  18. def toString(): String
    Definition Classes
    AnyRef → Any
  19. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  20. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  21. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Deprecated Value Members

  1. def prepare(): ExecutionContext
    Definition Classes
    ExecutionContext
    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0) preparation of ExecutionContexts will be removed

Inherited from ExecutionContextExecutor

Inherited from Executor

Inherited from ExecutionContext

Inherited from AnyRef

Inherited from Any

Ungrouped