Packages

  • package root
    Definition Classes
    root
  • package akka
    Definition Classes
    root
  • package event
    Definition Classes
    akka
  • object Logging

    Main entry point for Akka logging: log levels and message types (aka channels) defined for the main transport medium, the main event bus.

    Main entry point for Akka logging: log levels and message types (aka channels) defined for the main transport medium, the main event bus. The recommended use is to obtain an implementation of the Logging trait with suitable and efficient methods for generating log events:

    
val log = Logging(<bus>, <source object>)
...
log.info("hello world!")

    The source object is used in two fashions: its Class[_] will be part of all log events produced by this logger, plus a string representation is generated which may contain per-instance information, see apply or create below.

    Loggers are attached to the level-specific channels Error, Warning, Info and Debug as appropriate for the configured (or set) log level. If you want to implement your own, make sure to handle these four event types plus the InitializeLogger message which is sent before actually attaching it to the logging bus.

    Logging is configured by setting (some of) the following:

    
akka {
  loggers = ["akka.slf4j.Slf4jLogger"] # for example
  loglevel = "INFO"        # used when normal logging ("loggers") has been started
  stdout-loglevel = "WARN" # used during application start-up until normal logging is available
}

    Definition Classes
    event
  • Debug
  • Debug2
  • Debug3
  • DefaultLogger
  • Error
  • Error2
  • Error3
  • Info
  • Info2
  • Info3
  • InitializeLogger
  • LogEvent
  • LogEventException
  • LogEventWithCause
  • LogEventWithMarker
  • LogLevel
  • LoggerException
  • LoggerInitializationException
  • LoggerInitialized
  • StandardOutLogger
  • StdOutLogger
  • Warning
  • Warning2
  • Warning3
  • Warning4
c

akka.event.Logging

DefaultLogger

class DefaultLogger extends Actor with StdOutLogger with RequiresMessageQueue[LoggerMessageQueueSemantics]

Actor wrapper around the standard output logger. If akka.loggers is not set, it defaults to just this logger.

Source
Logging.scala
Linear Supertypes
RequiresMessageQueue[LoggerMessageQueueSemantics], StdOutLogger, Actor, AnyRef, Any
Known Subclasses
DefaultOSGiLogger, TestEventListener
Ordering
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  2. By Inheritance
Inherited
  1. DefaultLogger
  2. RequiresMessageQueue
  3. StdOutLogger
  4. Actor
  5. AnyRef
  6. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new DefaultLogger()

Type Members

  1. type Receive = PartialFunction[Any, Unit]
    Definition Classes
    Actor

Value Members

  1. implicit val context: ActorContext

    Scala API: Stores the context for this actor, including self, and sender.

    Scala API: Stores the context for this actor, including self, and sender. It is implicit to support operations such as forward.

    WARNING: Only valid within the Actor itself, so do not close over it and publish it to other threads!

    akka.actor.ActorContext is the Scala API. getContext returns a akka.actor.AbstractActor.ActorContext, which is the Java API of the actor context.

    Definition Classes
    Actor
  2. def debug(event: Debug): Unit
    Definition Classes
    StdOutLogger
  3. def error(event: Error): Unit
    Definition Classes
    StdOutLogger
  4. def info(event: Info): Unit
    Definition Classes
    StdOutLogger
  5. def postRestart(reason: Throwable): Unit

    User overridable callback: By default it calls preStart().

    User overridable callback: By default it calls preStart().

    reason

    the Throwable that caused the restart to happen Is called right AFTER restart on the newly created Actor to allow reinitialization after an Actor crash.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  6. def postStop(): Unit

    User overridable callback.

    User overridable callback.

    Is called asynchronously after 'actor.stop()' is invoked. Empty default implementation.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  7. def preRestart(reason: Throwable, message: Option[Any]): Unit

    Scala API: User overridable callback: By default it disposes of all children and then calls postStop().

    Scala API: User overridable callback: By default it disposes of all children and then calls postStop().

    reason

    the Throwable that caused the restart to happen

    message

    optionally the current message the actor processed when failing, if applicable Is called on a crashed Actor right BEFORE it is restarted to allow clean up of resources before Actor is terminated.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  8. def preStart(): Unit

    User overridable callback.

    User overridable callback.

    Is called when an Actor is started. Actors are automatically started asynchronously when created. Empty default implementation.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  9. def print(event: Any): Unit
    Definition Classes
    StdOutLogger
  10. def receive: Receive

    Scala API: This defines the initial actor behavior, it must return a partial function with the actor logic.

    Scala API: This defines the initial actor behavior, it must return a partial function with the actor logic.

    Definition Classes
    DefaultLogger → Actor
  11. implicit final val self: ActorRef

    The 'self' field holds the ActorRef for this actor.

    The 'self' field holds the ActorRef for this actor.

    Can be used to send messages to itself: 

    self ! message

    Definition Classes
    Actor
  12. final def sender(): ActorRef

    The reference sender Actor of the last received message.

    The reference sender Actor of the last received message. Is defined if the message was sent from another Actor, else deadLetters in akka.actor.ActorSystem.

    WARNING: Only valid within the Actor itself, so do not close over it and publish it to other threads!

    Definition Classes
    Actor
  13. def supervisorStrategy: SupervisorStrategy

    User overridable definition the strategy to use for supervising child actors.

    User overridable definition the strategy to use for supervising child actors.

    Definition Classes
    Actor
  14. def timestamp(event: LogEvent): String
    Definition Classes
    StdOutLogger
  15. def unhandled(message: Any): Unit

    User overridable callback.

    User overridable callback.

    Is called when a message isn't handled by the current behavior of the actor by default it fails with either a akka.actor.DeathPactException (in case of an unhandled akka.actor.Terminated message) or publishes an akka.actor.UnhandledMessage to the actor's system's akka.event.EventStream

    Definition Classes
    Actor
  16. def warning(event: Warning): Unit
    Definition Classes
    StdOutLogger