org.apache.beam.fn.harness.state

Class BeamFnStateGrpcClientCache

java.lang.Object

org.apache.beam.fn.harness.state.BeamFnStateGrpcClientCache

public class BeamFnStateGrpcClientCache
extends java.lang.Object

A cache of BeamFnStateClients which handle Beam Fn State requests using gRPC.

TODO: Add the ability to close which cancels any pending and stops any future requests.

Constructor Summary

Constructors

Constructor and Description
BeamFnStateGrpcClientCache(org.apache.beam.sdk.fn.IdGenerator idGenerator, org.apache.beam.sdk.fn.channel.ManagedChannelFactory channelFactory, org.apache.beam.sdk.fn.stream.OutboundObserverFactory outboundObserverFactory)

Method Summary

Modifier and Type	Method and Description
BeamFnStateClient	forApiServiceDescriptor(org.apache.beam.model.pipeline.v1.Endpoints.ApiServiceDescriptor apiServiceDescriptor) Creates or returns an existing BeamFnStateClient depending on whether the passed in Endpoints.ApiServiceDescriptor currently has a BeamFnStateClient bound to the same channel.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BeamFnStateGrpcClientCache

public BeamFnStateGrpcClientCache(org.apache.beam.sdk.fn.IdGenerator idGenerator,
                                  org.apache.beam.sdk.fn.channel.ManagedChannelFactory channelFactory,
                                  org.apache.beam.sdk.fn.stream.OutboundObserverFactory outboundObserverFactory)

Method Detail

forApiServiceDescriptor

public BeamFnStateClient forApiServiceDescriptor(org.apache.beam.model.pipeline.v1.Endpoints.ApiServiceDescriptor apiServiceDescriptor)
                                          throws java.io.IOException

Creates or returns an existing BeamFnStateClient depending on whether the passed in Endpoints.ApiServiceDescriptor currently has a BeamFnStateClient bound to the same channel.

Throws:

java.io.IOException