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If this method returns true when all ports had been closed then the stage is not stopped until CompleteStage or FailStage(Exception) are explicitly called

The IMaterializer that has set this GraphStage in motion.

TBD

An IMaterializer that may run fusable parts of the graphs that it materializes within the same actor as the current GraphStage(if fusing is available). This materializer must not be shared outside of the GraphStage.

Abort outstanding (suspended) emissions for the given outlet, if there are any. This will reinstall the replaced handler that was in effect before the EmitT(OutletT, T, Action) call.

Abort outstanding (suspended) reading for the given inlet, if there is any. This will reinstall the replaced handler that was in effect before the read call.

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Requests to stop receiving events from a given input port. Cancelling clears any ungrabbed elements from the port.

Signals that there will be no more elements emitted on the given port.

Automatically invokes Cancel(Inlet) or Complete(Outlet) on all the input or output ports that have been called, then stops the stage, then PostStop is called.

TBD

Emit an element through the given outlet and continue with the given thunk afterwards, suspending execution if necessary. This action replaces the OutHandler for the given outlet if suspension is needed and reinstalls the current handler upon receiving an OnPull.

Emit an element through the given outlet and continue with the given thunk afterwards, suspending execution if necessary. This action replaces the OutHandler for the given outlet if suspension is needed and reinstalls the current handler upon receiving an OnPull signal (before invoking the andThen function).

Emit a sequence of elements through the given outlet, suspending execution if necessary. This action replaces the OutHandler for the given outlet if suspension is needed and reinstalls the current handler upon receiving an OnPull signal.

Emit a sequence of elements through the given outlet, suspending execution if necessary. This action replaces the OutHandler for the given outlet if suspension is needed and reinstalls the current handler upon receiving an OnPull signal.

Emit a sequence of elements through the given outlet and continue with the given thunk afterwards, suspending execution if necessary. This action replaces the OutHandler for the given outlet if suspension is needed and reinstalls the current handler upon receiving an OnPull signal (before invoking the andThen function).

Emit a sequence of elements through the given outlet and continue with the given thunk afterwards, suspending execution if necessary. This action replaces the OutHandler for the given outlet if suspension is needed and reinstalls the current handler upon receiving an OnPull signal (before invoking the andThen function).

Determines whether the specified object is equal to the current object.

Signals failure through the given port.

Automatically invokes Cancel(Inlet) or Fail(Outlet, Exception) on all the input or output ports that have been called, then stops the stage, then PostStop is called.

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

Obtain a callback object that can be used asynchronously to re-enter the current GraphStageTShape with an asynchronous notification. The delegate returned is safe to be called from other threads and it will in the background thread-safely delegate to the passed callback function. I.e. it will be called by the external world and the passed handler will be invoked eventually in a thread-safe way by the execution environment. This object can be cached and reused within the same GraphStageLogic.

Obtain a callback object that can be used asynchronously to re-enter the current GraphStageTShape with an asynchronous notification. The delegate returned is safe to be called from other threads and it will in the background thread-safely delegate to the passed callback function. I.e. it will be called by the external world and the passed handler will be invoked eventually in a thread-safe way by the execution environment. This object can be cached and reused within the same GraphStageLogic.

Retrieves the current callback for the events on the given InletT

Retrieves the current callback for the events on the given OutletT

Serves as the default hash function.

Initialize a StageActorRef which can be used to interact with from the outside world "as-if" an actor. The messages are looped through the GetAsyncCallbackT(ActionT) mechanism of GraphStageTShape so they are safe to modify internal state of this stage. This method must (the earliest) be called after the GraphStageLogic constructor has finished running, for example from the PreStart callback the graph stage logic provides. Created StageActorRef to get messages and watch other actors in synchronous way. The StageActorRef's lifecycle is bound to the Stage, in other words when the Stage is finished, the Actor will be terminated as well. The entity backing the StageActorRef is not a real Actor, but the GraphStageLogic itself, therefore it does not react to PoisonPill.

Gets the Type of the current instance.

Once the callback OnPush for an input port has been invoked, the element that has been pushed can be retrieved via this method. After GrabT(Inlet) has been called the port is considered to be empty, and further calls to GrabT(Inlet) will fail until the port is pulled again and a new element is pushed as a response. The method IsAvailable(Inlet) can be used to query if the port has an element that can be grabbed or not.

Once the callback OnPush for an input port has been invoked, the element that has been pushed can be retrieved via this method. After GrabT(InletT) has been called the port is considered to be empty, and further calls to GrabT(InletT) will fail until the port is pulled again and a new element is pushed as a response. The method IsAvailable(Inlet) can be used to query if the port has an element that can be grabbed or not.

Indicates whether there is already a pending pull for the given input port. If this method returns true then IsAvailable(Inlet) must return false for that same port.

Indicates whether there is an element waiting at the given input port. GrabT(InletT) can be used to retrieve the element. After calling GrabT(InletT) this method will return false. If this method returns true then HasBeenPulled(Inlet) will return false for that same port.

Return true if the given output port is ready to be pushed.

Indicates whether the port has been closed. A closed port cannot be pulled.

Indicates whether the port has been closed. A closed port cannot be pushed.

Creates a shallow copy of the current Object.

Called when the output port will no longer accept any new elements. After this callback no other callbacks will be called for this port.

Called when the output port has received a pull, and therefore ready to emit an element, i.e. PushT(Outlet, T) is now allowed to be called on this port.

Install a handler on the given inlet that emits received elements on the given outlet before pulling for more data. doFinish and doFail control whether completion or failure of the given inlet shall lead to stage termination or not. doPull instructs to perform one initial pull on the from port.

Invoked after processing of external events stopped because the stage is about to stop or fail.

Invoked before any external events are processed, at the startup of the stage.

Requests an element on the given port. Calling this method twice before an element arrived will fail. There can only be one outstanding request at any given time.The method HasBeenPulled(Inlet) can be used query whether pull is allowed to be called or not.This method will also fail if the port is already closed.

Requests an element on the given port. Calling this method twice before an element arrived will fail. There can only be one outstanding request at any given time.The method HasBeenPulled(Inlet) can be used query whether pull is allowed to be called or not.This method will also fail if the port is already closed.

Emits an element through the given output port. Calling this method twice before a PullT(InletT) has been arrived will fail. There can be only one outstanding push request at any given time. The method IsAvailable(Inlet) can be used to check if the port is ready to be pushed or not.

Read an element from the given inlet and continue with the given function, suspending execution if necessary. This action replaces the InHandler for the given inlet if suspension is needed and reinstalls the current handler upon receiving the OnPush signal (before invoking the andThen function).

Read a number of elements from the given inlet and continue with the given function, suspending execution if necessary. This action replaces the InHandler for the given inlet if suspension is needed and reinstalls the current handler upon receiving the last OnPush signal. If upstream closes before N elements have been read, the onComplete function is invoked with the elements which were read.

Assigns callbacks for the events for an InletT.

Assigns callbacks for the events for an OutletT.

Assigns callbacks for the events for an OutletT.

Assigns callbacks for the events for an OutletT.

Controls whether this stage shall shut down when all its ports are closed, which is the default. In order to have it keep going past that point this method needs to be called with a true argument before all ports are closed, and afterwards it will not be closed until this method is called with a false argument or the stage is terminated via CompleteStage or FailStage(Exception).

Returns a string that represents the current object.

Requests an element on the given port unless the port is already closed. Calling this method twice before an element arrived will fail. There can only be one outstanding request at any given time.The method HasBeenPulled(Inlet) can be used query whether pull is allowed to be called or not.

Requests an element on the given port unless the port is already closed. Calling this method twice before an element arrived will fail. There can only be one outstanding request at any given time.The method HasBeenPulled(Inlet) can be used query whether pull is allowed to be called or not.

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Matches the specified target.

Matches the specified target and return a result of target processing.