org.apache.beam.runners.fnexecution.control (Apache Beam 2.18.0)

Interface Summary
Interface	Description
BundleCheckpointHandler	A handler which is invoked when the SDK returns `BeamFnApi.DelayedBundleApplication`s as part of the bundle completion.
BundleFinalizationHandler	A handler for the runner when a finalization request has been received.
BundleProgressHandler	A handler for bundle progress messages, both during bundle execution and on its completion.
ControlClientPool	A pool of control clients that brokers incoming SDK harness connections (in the form of `InstructionRequestHandlers`.
ControlClientPool.Sink	A sink for `InstructionRequestHandlers` keyed by worker id.
ControlClientPool.Source	A source of `InstructionRequestHandlers`.
ExecutableStageContext	The context required in order to execute `stages`.
ExecutableStageContext.Factory	Creates `ExecutableStageContext` instances.
InstructionRequestHandler	Interface for any function that can handle a Fn API `BeamFnApi.InstructionRequest`.
JobBundleFactory	A factory that has all job-scoped information, and can be combined with stage-scoped information to create a `StageBundleFactory`.
OutputReceiverFactory	A factory that can create output receivers during an executable stage.
ReferenceCountingExecutableStageContextFactory.Creator	Interface for creator which extends Serializable.
RemoteBundle	A bundle capable of handling input data elements for a `bundle descriptor` by forwarding them to a remote environment for processing.
StageBundleFactory	A bundle factory scoped to a particular `ExecutableStage`, which has all of the resources it needs to provide new `RemoteBundles`.

Class Summary
Class	Description
BundleFinalizationHandlers	Utility methods for creating `BundleFinalizationHandler`s.
BundleFinalizationHandlers.InMemoryFinalizer	See `BundleFinalizationHandlers.inMemoryFinalizer(InstructionRequestHandler)` for details.
DefaultExecutableStageContext	Implementation of a `ExecutableStageContext`.
DefaultJobBundleFactory	A `JobBundleFactory` for which the implementation can specify a custom `EnvironmentFactory` for environment management.
DefaultJobBundleFactory.ServerInfo	A container for EnvironmentFactory and its corresponding Grpc servers.
DefaultJobBundleFactory.WrappedSdkHarnessClient	Holder for an `SdkHarnessClient` along with its associated state and data servers.
FnApiControlClient	A client for the control plane of an SDK harness, which can issue requests to it over the Fn API.
FnApiControlClientPoolService	A Fn API control service which adds incoming SDK harness connections to a sink.
MapControlClientPool	A `ControlClientPool` backed by a client map.
ProcessBundleDescriptors	Utility methods for creating `BeamFnApi.ProcessBundleDescriptor` instances.
ProcessBundleDescriptors.BagUserStateSpec<K,V,W extends BoundedWindow>	A container type storing references to the key, value, and window `Coder` used when handling bag user state requests.
ProcessBundleDescriptors.ExecutableProcessBundleDescriptor
ProcessBundleDescriptors.SideInputSpec<T,W extends BoundedWindow>	A container type storing references to the value, and window `Coder` used when handling side input state requests.
ProcessBundleDescriptors.TimerSpec<K,V,W extends BoundedWindow>	A container type storing references to the key, timer and payload coders and the remote input destination used when handling timer requests.
ReferenceCountingExecutableStageContextFactory	`ExecutableStageContext.Factory` which counts ExecutableStageContext reference for book keeping.
RemoteOutputReceiver<T>	A pair of `Coder` and `FnDataReceiver` which can be registered to receive elements for a `LogicalEndpoint`.
SdkHarnessClient	A high-level client for an SDK harness.
SdkHarnessClient.ActiveBundle	An active bundle for a particular `BeamFnApi.ProcessBundleDescriptor`.
SingleEnvironmentInstanceJobBundleFactory	Deprecated replace with a `DefaultJobBundleFactory` when appropriate if the `EnvironmentFactory` is a `DockerEnvironmentFactory`, or create an `InProcessJobBundleFactory` and inline the creation of the environment if appropriate.
TimerReceiverFactory	`OutputReceiverFactory` that passes outputs to `TimerReceiverFactory.timerDataConsumer`.

Package org.apache.beam.runners.fnexecution.control Description

Utilities for a Beam runner to interact with the Fn API Control Service via java abstractions.