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SDK for the development of HiveMQ Amazon Kinesis Extension customizations

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/*
 * Copyright 2023-present HiveMQ GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hivemq.extensions.amazon.kinesis.api.transformers;

import com.hivemq.extension.sdk.api.annotations.DoNotImplement;
import com.hivemq.extension.sdk.api.annotations.NotNull;
import com.hivemq.extension.sdk.api.services.builder.PublishBuilder;
import com.hivemq.extension.sdk.api.services.publish.Publish;
import com.hivemq.extensions.amazon.kinesis.api.model.InboundKinesisRecord;

import java.util.List;

/**
 * The output parameter of the {@link KinesisToMqttTransformer}. It allows access to the {@link PublishBuilder}.
 * 
 * After the {@link KinesisToMqttTransformer#transformKinesisToMqtt(KinesisToMqttInput, KinesisToMqttOutput)} method
 * returns the {@link Publish}es given to this output will be published by HiveMQ.
 *
 * @author Mario Schwede
 * @since 4.14.0
 */
@DoNotImplement
public interface KinesisToMqttOutput {

    /**
     * @return A new {@link PublishBuilder}.
     * @since 4.14.0
     */
    @NotNull PublishBuilder newPublishBuilder();

    /**
     * Sets the {@link Publish}es, that will be published by HiveMQ after the
     * {@link KinesisToMqttTransformer#transformKinesisToMqtt(KinesisToMqttInput, KinesisToMqttOutput)} call returns.
     * The "HiveMQ Enterprise Extension for Amazon Kinesis" will publish the publishes in the order provided by the
     * {@code publishes} argument.
     * 

     * If desired, the same publish can occupy multiple places in the {@code publishes} list. When no publish shall be
     * published by HiveMQ for a given {@link InboundKinesisRecord}, provide an empty list or just don't call this
     * method.
     * 

     * Use the {@link #newPublishBuilder() PublishBuilder} to create new publishes as desired.
     * 
     * Each additional call of this method will overwrite the previous one.
     *
     * @param publishes A list of to be published {@link Publish}es.
     * @throws NullPointerException     If {@code publishes} or any element of it is null.
     * @throws IllegalArgumentException If any element in {@code publishes} was not created via a
     *                                  {@link PublishBuilder}.
     * @since 4.14.0
     */
    void setPublishes(@NotNull List<@NotNull Publish> publishes);
}