/
WithSender.java
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/
WithSender.java
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/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.services.utils.akka.controlflow;
import org.eclipse.ditto.model.base.headers.WithDittoHeaders;
import akka.actor.ActorRef;
/**
* A message packed together with sender.
*
* @param <T> type of message.
*/
public interface WithSender<T extends WithDittoHeaders> {
/**
* @return the message.
*/
T getMessage();
/**
* @return the sender.
*/
ActorRef getSender();
/**
* Replace the message.
*
* @param newMessage the new message.
* @param <S> type of the new message.
* @return copy of this object with message replaced.
*/
<S extends WithDittoHeaders> WithSender<S> withMessage(S newMessage);
/**
* Create a message with sender.
*
* @param message the message.
* @param sender the sender.
* @param <T> type of message.
* @return message and sender bundled together.
*/
static <T extends WithDittoHeaders> WithSender<T> of(final T message, final ActorRef sender) {
return ControlFlowFactory.messageWithSender(message, sender);
}
}