public interface FnDataService
FnDataServiceis able to forward inbound elements to a consumer and is also a consumer of outbound elements. Callers can register themselves as consumers for inbound elements or can get a handle for a consumer for outbound elements.
|Modifier and Type||Method and Description|
Registers a receiver to be notified upon any incoming elements.
Creates a receiver to which you can write data values and have them sent over this data plane service.
<T> InboundDataClient receive(LogicalEndpoint inputLocation, Coder<org.apache.beam.sdk.util.WindowedValue<T>> coder, FnDataReceiver<org.apache.beam.sdk.util.WindowedValue<T>> listener)
The provided coder is used to decode inbound elements. The decoded elements are passed to the provided receiver.
Any failure during decoding or processing of the element will complete the returned future exceptionally. On successful termination of the stream, the returned future is completed successfully.
The provided receiver is not required to be thread safe.
<T> CloseableFnDataReceiver<org.apache.beam.sdk.util.WindowedValue<T>> send(LogicalEndpoint outputLocation, Coder<org.apache.beam.sdk.util.WindowedValue<T>> coder)
The provided coder is used to encode elements on the outbound stream.
Closing the returned receiver signals the end of the stream.
The returned receiver is not thread safe.