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The AWS Java SDK for Amazon Cognito Identity Provider Service module holds the client classes that are used for communicating with Amazon Cognito Identity Provider 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.cognitoidp.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.cognitoidp.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.*;

/**
 * InitiateAuthRequest Marshaller
 */
public class InitiateAuthRequestMarshaller implements Marshaller, InitiateAuthRequest> {

    private final SdkJsonProtocolFactory protocolFactory;

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

    public Request marshall(InitiateAuthRequest initiateAuthRequest) {

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

        Request request = new DefaultRequest(initiateAuthRequest, "AWSCognitoIdentityProvider");
        request.addHeader("X-Amz-Target", "AWSCognitoIdentityProviderService.InitiateAuth");

        request.setHttpMethod(HttpMethodName.POST);

        request.setResourcePath("");

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

            jsonGenerator.writeStartObject();

            if (initiateAuthRequest.getAuthFlow() != null) {
                jsonGenerator.writeFieldName("AuthFlow").writeValue(initiateAuthRequest.getAuthFlow());
            }

            java.util.Map authParametersMap = initiateAuthRequest.getAuthParameters();
            if (authParametersMap != null) {
                jsonGenerator.writeFieldName("AuthParameters");
                jsonGenerator.writeStartObject();

                for (Map.Entry authParametersMapValue : authParametersMap.entrySet()) {
                    if (authParametersMapValue.getValue() != null) {
                        jsonGenerator.writeFieldName(authParametersMapValue.getKey());

                        jsonGenerator.writeValue(authParametersMapValue.getValue());
                    }
                }
                jsonGenerator.writeEndObject();
            }

            java.util.Map clientMetadataMap = initiateAuthRequest.getClientMetadata();
            if (clientMetadataMap != null) {
                jsonGenerator.writeFieldName("ClientMetadata");
                jsonGenerator.writeStartObject();

                for (Map.Entry clientMetadataMapValue : clientMetadataMap.entrySet()) {
                    if (clientMetadataMapValue.getValue() != null) {
                        jsonGenerator.writeFieldName(clientMetadataMapValue.getKey());

                        jsonGenerator.writeValue(clientMetadataMapValue.getValue());
                    }
                }
                jsonGenerator.writeEndObject();
            }
            if (initiateAuthRequest.getClientId() != null) {
                jsonGenerator.writeFieldName("ClientId").writeValue(initiateAuthRequest.getClientId());
            }

            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;
    }

}