com.amazonaws.services.elasticmapreduce.model.transform.AddJobFlowStepsRequestMarshaller Maven / Gradle / Ivy

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The AWS Java SDK for Amazon EMR module holds the client classes that are used for communicating with Amazon Elastic MapReduce Service

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/*
 * Copyright 2011-2016 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 com.amazonaws.services.elasticmapreduce.model.transform;

import java.io.ByteArrayInputStream;
import java.util.Collections;
import java.util.Map;
import java.util.List;
import java.util.regex.Pattern;

import com.amazonaws.AmazonClientException;
import com.amazonaws.Request;
import com.amazonaws.DefaultRequest;
import com.amazonaws.http.HttpMethodName;
import com.amazonaws.services.elasticmapreduce.model.*;
import com.amazonaws.transform.Marshaller;
import com.amazonaws.util.BinaryUtils;
import com.amazonaws.util.StringUtils;
import com.amazonaws.util.IdempotentUtils;
import com.amazonaws.util.StringInputStream;
import com.amazonaws.protocol.json.*;

/**
 * AddJobFlowStepsRequest Marshaller
 */
public class AddJobFlowStepsRequestMarshaller implements Marshaller, AddJobFlowStepsRequest> {

    private final SdkJsonProtocolFactory protocolFactory;

    public AddJobFlowStepsRequestMarshaller(SdkJsonProtocolFactory protocolFactory) {
        this.protocolFactory = protocolFactory;
    }

    public Request marshall(AddJobFlowStepsRequest addJobFlowStepsRequest) {

        if (addJobFlowStepsRequest == null) {
            throw new AmazonClientException("Invalid argument passed to marshall(...)");
        }

        Request request = new DefaultRequest(addJobFlowStepsRequest, "AmazonElasticMapReduce");
        request.addHeader("X-Amz-Target", "ElasticMapReduce.AddJobFlowSteps");

        request.setHttpMethod(HttpMethodName.POST);

        request.setResourcePath("");

        try {
            final StructuredJsonGenerator jsonGenerator = protocolFactory.createGenerator();

            jsonGenerator.writeStartObject();

            if (addJobFlowStepsRequest.getJobFlowId() != null) {
                jsonGenerator.writeFieldName("JobFlowId").writeValue(addJobFlowStepsRequest.getJobFlowId());
            }

            com.amazonaws.internal.SdkInternalList stepsList = (com.amazonaws.internal.SdkInternalList) addJobFlowStepsRequest
                    .getSteps();
            if (!stepsList.isEmpty() || !stepsList.isAutoConstruct()) {
                jsonGenerator.writeFieldName("Steps");
                jsonGenerator.writeStartArray();
                for (StepConfig stepsListValue : stepsList) {
                    if (stepsListValue != null) {

                        StepConfigJsonMarshaller.getInstance().marshall(stepsListValue, jsonGenerator);
                    }
                }
                jsonGenerator.writeEndArray();
            }

            jsonGenerator.writeEndObject();

            byte[] content = jsonGenerator.getBytes();
            request.setContent(new ByteArrayInputStream(content));
            request.addHeader("Content-Length", Integer.toString(content.length));
            request.addHeader("Content-Type", protocolFactory.getContentType());
        } catch (Throwable t) {
            throw new AmazonClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
        }

        return request;
    }

}