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SDK to implement Numaflow Source or User Defined Functions or Sinks in Java.

There is a newer version: 0.9.0

package io.numaproj.numaflow.sideinput;


/**
 * SideInputRetriever exposes method for retrieving side input.
 * Implementations should override the retrieveSideInput method
 * which will be used for updating the side input.
 */
public abstract class SideInputRetriever {
    /**
     * method which will be used for retrieving side input.
     * In case of failure, user can return a Message with noBroadcast flag set to true.
     * This will drop the message and will not broadcast it.
     * @return Message which contains side input
     */
    public abstract Message retrieveSideInput();
}