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A library used at otto.de to implement Spring Boot based event-sourcing microservices.

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package de.otto.synapse.endpoint.receiver;

import de.otto.synapse.consumer.MessageConsumer;
import de.otto.synapse.consumer.MessageDispatcher;
import de.otto.synapse.endpoint.MessageEndpoint;
import jakarta.annotation.Nonnull;

/**
 * Receiver-side {@code MessageEndpoint endpoint} of a Message Channel
 * 
 *     
 * 
 */
public interface MessageReceiverEndpoint extends MessageEndpoint {

    /**
     * Registers a MessageConsumer at the receiver endpoint.
     *
     * {@link MessageConsumer consumers} have to be thread safe as they might be called from multiple threads
     * in parallel (e.g. for kinesis streams there is one thread per shard).
     *
     * @param messageConsumer registered EventConsumer
     */
    void register(MessageConsumer messageConsumer);

    /**
     * Returns the MessageDispatcher that is used to dispatch messages.
     *
     * @return MessageDispatcher
     */
    @Nonnull
    MessageDispatcher getMessageDispatcher();
}