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The AWS Java SDK for AWS WAF Service module holds the client classes that are used for communicating with AWS WAF 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.waf.model.transform;

import java.util.Map;
import java.util.List;

import com.amazonaws.SdkClientException;
import com.amazonaws.services.waf.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.*;

/**
 * HTTPRequestMarshaller
 */
public class HTTPRequestJsonMarshaller {

    /**
     * Marshall the given parameter object, and output to a SdkJsonGenerator
     */
    public void marshall(HTTPRequest hTTPRequest, StructuredJsonGenerator jsonGenerator) {

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

        try {
            jsonGenerator.writeStartObject();

            if (hTTPRequest.getClientIP() != null) {
                jsonGenerator.writeFieldName("ClientIP").writeValue(hTTPRequest.getClientIP());
            }
            if (hTTPRequest.getCountry() != null) {
                jsonGenerator.writeFieldName("Country").writeValue(hTTPRequest.getCountry());
            }
            if (hTTPRequest.getURI() != null) {
                jsonGenerator.writeFieldName("URI").writeValue(hTTPRequest.getURI());
            }
            if (hTTPRequest.getMethod() != null) {
                jsonGenerator.writeFieldName("Method").writeValue(hTTPRequest.getMethod());
            }
            if (hTTPRequest.getHTTPVersion() != null) {
                jsonGenerator.writeFieldName("HTTPVersion").writeValue(hTTPRequest.getHTTPVersion());
            }

            java.util.List headersList = hTTPRequest.getHeaders();
            if (headersList != null) {
                jsonGenerator.writeFieldName("Headers");
                jsonGenerator.writeStartArray();
                for (HTTPHeader headersListValue : headersList) {
                    if (headersListValue != null) {

                        HTTPHeaderJsonMarshaller.getInstance().marshall(headersListValue, jsonGenerator);
                    }
                }
                jsonGenerator.writeEndArray();
            }

            jsonGenerator.writeEndObject();
        } catch (Throwable t) {
            throw new SdkClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
        }
    }

    private static HTTPRequestJsonMarshaller instance;

    public static HTTPRequestJsonMarshaller getInstance() {
        if (instance == null)
            instance = new HTTPRequestJsonMarshaller();
        return instance;
    }

}