Package org.apache.beam.fn.harness.state

Class 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 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

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method 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