com.ivona.services.tts.model.transform.lexicons.PutLexiconPostRequestMarshaller Maven / Gradle / Ivy

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/*
 * Copyright 2015 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.ivona.services.tts.model.transform.lexicons;

import com.amazonaws.AmazonClientException;
import com.amazonaws.DefaultRequest;
import com.amazonaws.Request;
import com.amazonaws.http.HttpMethodName;
import com.amazonaws.transform.Marshaller;
import com.amazonaws.util.StringInputStream;
import com.amazonaws.util.json.JSONException;
import com.amazonaws.util.json.JSONWriter;
import com.ivona.services.tts.IvonaSpeechCloudClient;
import com.ivona.services.tts.model.Lexicon;
import com.ivona.services.tts.model.PutLexiconRequest;
import com.ivona.services.tts.model.transform.MarshallerHelper;

import java.io.StringWriter;
import java.io.UnsupportedEncodingException;

import static java.nio.charset.StandardCharsets.UTF_8;

/**
 * PutLexiconRequest Marshaller - transforms PutLexiconRequest class into Json POST request
 */
public class PutLexiconPostRequestMarshaller implements Marshaller, PutLexiconRequest>,
        PutLexiconRequestMarshaller {

    protected final static String RESOURCE_PATH = "PutLexicon";
    protected final static String JSON_KEY_LEXICON = "Lexicon";
    protected final static String JSON_KEY_NAME = "Name";
    protected final static String JSON_KEY_CONTENTS = "Contents";

    public Request marshall(PutLexiconRequest putLexiconRequest) {
        if (putLexiconRequest == null) {
            throw new AmazonClientException("null putLexiconRequest passed to marshall(...)");
        }

        Request request = new DefaultRequest(putLexiconRequest,
                IvonaSpeechCloudClient.SERVICE_NAME);
        request.setHttpMethod(HttpMethodName.POST);
        setRequestPayload(request, putLexiconRequest);
        request.setResourcePath(RESOURCE_PATH);

        return request;
    }

    private void setRequestPayload(Request request, PutLexiconRequest putLexiconRequest) {
        StringWriter stringWriter = new StringWriter();
        JSONWriter jsonWriter = new JSONWriter(stringWriter);

        try {
            jsonWriter.object();
            Lexicon lexicon = putLexiconRequest.getLexicon();
            if (lexicon != null) {
                jsonWriter.key(JSON_KEY_LEXICON);
                jsonWriter.object();

                if (MarshallerHelper.stringIsNotBlank(lexicon.getName())) {
                    jsonWriter.key(JSON_KEY_NAME).value(lexicon.getName());
                } else {
                    throw new AmazonClientException("null or empty lexicon name passed to marshall(...)");
                }

                if (MarshallerHelper.stringIsNotBlank(lexicon.getContents())) {
                    jsonWriter.key(JSON_KEY_CONTENTS).value(lexicon.getContents());
                } else {
                    throw new AmazonClientException("null or empty lexicon contents passed to marshall(...)");
                }

                jsonWriter.endObject();
            } else {
                throw new AmazonClientException("null lexicon object passed to marshall(...)");
            }
            jsonWriter.endObject();

            String snippet = stringWriter.toString();
            byte[] content = snippet.getBytes(UTF_8);
            request.setContent(new StringInputStream(snippet));
            request.addHeader("Content-Length", Integer.toString(content.length));
        } catch (JSONException e) {
            throw new AmazonClientException("Unable to marshall request to JSON", e);
        } catch (UnsupportedEncodingException e) {
            throw new AmazonClientException("Unable to marshall request to JSON", e);
        }
    }
}