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KafkaConnectionFactory.java
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KafkaConnectionFactory.java
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/*
* Copyright (c) 2017 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.connectivity.messaging.kafka;
import org.eclipse.ditto.model.connectivity.Connection;
import org.eclipse.ditto.services.connectivity.util.KafkaConfigReader;
import akka.NotUsed;
import akka.kafka.ProducerMessage;
import akka.stream.javadsl.Flow;
/**
* Creates Kafka sinks.
*/
public interface KafkaConnectionFactory {
/**
* Identifier of the connection.
*
* @return the ID.
*/
String connectionId();
/**
* Create an Akka stream flow of Kafka messages.
*
* @param <T> type of the pass through object.
* @return Akka stream flow that publishes Kafka messages to the broker.
*/
<T> Flow<ProducerMessage.Envelope<String, String, T>, ProducerMessage.Results<String, String, T>, NotUsed> newFlow();
/**
* Create a default Kafka connection factory.
*
* @param connection the Kafka connection.
* @param config the Kafka config reader.
* @return an Kafka connection factory.
*/
static KafkaConnectionFactory of(final Connection connection, final KafkaConfigReader config) {
return new DefaultKafkaConnectionFactory(connection, config);
}
}