public class FnApiControlClientPoolService extends org.apache.beam.model.fnexecution.v1.BeamFnControlGrpc.BeamFnControlImplBase implements FnService
|Modifier and Type||Method and Description|
Called by gRPC for each incoming connection from an SDK harness, and enqueue an available SDK harness client.
Creates a new
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public static FnApiControlClientPoolService offeringClientsToPool(ControlClientPool.Sink clientPool, HeaderAccessor headerAccessor)
FnApiControlClientPoolServicewhich will enqueue and vend new SDK harness connections.
Clients placed into the
clientSink are owned by whoever consumes them from the other
end of the pool. That consumer is responsible for closing the clients when they are no longer
public org.apache.beam.vendor.grpc.v1p21p0.io.grpc.stub.StreamObserver<org.apache.beam.model.fnexecution.v1.BeamFnApi.InstructionResponse> control(org.apache.beam.vendor.grpc.v1p21p0.io.grpc.stub.StreamObserver<org.apache.beam.model.fnexecution.v1.BeamFnApi.InstructionRequest> requestObserver)
Note: currently does not distinguish what sort of SDK it is, so a separate instance is required for each.
public void close()
There should be no more calls to any service method by the time a call to
begins. Specifically, this means that a
Server that this service is bound to should have
completed a call to the
method, and all future incoming calls will be rejected.