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The AWS Java SDK for AWS Iot Data Plane Service module holds the client classes that are used for communicating with AWS IoT Data Plane Service

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/*
 * Copyright 2013-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.services.iotdataplane.transform;

import software.amazon.awssdk.annotations.Generated;
import software.amazon.awssdk.annotations.SdkInternalApi;
import software.amazon.awssdk.awscore.protocol.json.AwsJsonProtocolFactory;
import software.amazon.awssdk.core.Request;
import software.amazon.awssdk.core.exception.SdkClientException;
import software.amazon.awssdk.core.http.HttpMethodName;
import software.amazon.awssdk.core.protocol.OperationInfo;
import software.amazon.awssdk.core.protocol.ProtocolRequestMarshaller;
import software.amazon.awssdk.core.runtime.transform.Marshaller;
import software.amazon.awssdk.services.iotdataplane.model.PublishRequest;
import software.amazon.awssdk.utils.Validate;

/**
 * {@link PublishRequest} Marshaller
 */
@Generated("software.amazon.awssdk:codegen")
@SdkInternalApi
public class PublishRequestMarshaller implements Marshaller, PublishRequest> {
    private static final OperationInfo SDK_OPERATION_BINDING = OperationInfo.builder().requestUri("/topics/{topic}")
            .httpMethodName(HttpMethodName.POST).hasExplicitPayloadMember(true).hasPayloadMembers(true).build();

    private final AwsJsonProtocolFactory protocolFactory;

    public PublishRequestMarshaller(AwsJsonProtocolFactory protocolFactory) {
        this.protocolFactory = protocolFactory;
    }

    @Override
    public Request marshall(PublishRequest publishRequest) {
        Validate.paramNotNull(publishRequest, "publishRequest");
        try {
            ProtocolRequestMarshaller protocolMarshaller = protocolFactory.createProtocolMarshaller(
                    SDK_OPERATION_BINDING, publishRequest);
            protocolMarshaller.startMarshalling();
            PublishRequestModelMarshaller.getInstance().marshall(publishRequest, protocolMarshaller);
            return protocolMarshaller.finishMarshalling();
        } catch (Exception e) {
            throw SdkClientException.builder().message("Unable to marshall request to JSON: " + e.getMessage()).cause(e).build();
        }
    }
}