Example usage for javax.json.stream JsonGenerator writeEnd

List of usage examples for javax.json.stream JsonGenerator writeEnd

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Introduction

In this page you can find the example usage for javax.json.stream JsonGenerator writeEnd.

Prototype

JsonGenerator writeEnd();

Source Link

Document

Writes the end of the current context.

Usage

From source file:at.porscheinformatik.sonarqube.licensecheck.mavenlicense.MavenLicense.java

public static String createString(Collection<MavenLicense> mavenLicenses) {
    TreeSet<MavenLicense> mavenLicenseSet = new TreeSet<>();
    mavenLicenseSet.addAll(mavenLicenses);

    StringWriter jsonString = new StringWriter();
    JsonGenerator generator = Json.createGenerator(jsonString);
    generator.writeStartArray();//w w  w. j a v a 2 s. c  o m
    for (MavenLicense mavenLicense : mavenLicenseSet) {
        generator.writeStartObject();
        generator.write("licenseNameRegEx", mavenLicense.getLicenseNameRegEx().pattern());
        generator.write("license", mavenLicense.getLicense());
        generator.writeEnd();
    }
    generator.writeEnd();
    generator.close();

    return jsonString.toString();
}

From source file:at.porscheinformatik.sonarqube.licensecheck.license.License.java

public static String createString(Collection<License> licenses) {
    TreeSet<License> licenseSet = new TreeSet<>();
    licenseSet.addAll(licenses);//from w  ww.  j a  v a2 s .  c om

    StringWriter jsonString = new StringWriter();
    JsonGenerator generator = Json.createGenerator(jsonString);
    generator.writeStartArray();
    for (License license : licenseSet) {
        generator.writeStartObject();
        generator.write("name", license.getName());
        generator.write("identifier", license.getIdentifier());
        generator.write("status", license.getStatus());
        generator.writeEnd();
    }
    generator.writeEnd();
    generator.close();

    return jsonString.toString();
}

From source file:com.mapr.data.sputnik.RandomJsonGenerator.java

protected void processItem(Object item, JsonGenerator gen, String currentContext) {
    if (String.class.isAssignableFrom(item.getClass())) {
        //literal string, just add it
        addValue(gen, null, (String) item);
        generatedValues.put(currentContext, (String) item);
    } else if (Map.class.isAssignableFrom(item.getClass())) {
        Map<String, Object> nestedProps = (Map<String, Object>) item;
        gen.writeStartObject();//ww  w.  j av  a 2 s.  c  om

        processProperties(gen, nestedProps, currentContext + ".");
        gen.writeEnd();
    }
}

From source file:edu.harvard.hms.dbmi.bd2k.irct.ws.rs.resultconverter.JSONTabularDataConverter.java

@Override
public StreamingOutput createStream(final Result result) {
    StreamingOutput stream = new StreamingOutput() {
        @Override//from w w w  .j av a 2s.  co m
        public void write(OutputStream outputStream) throws IOException, WebApplicationException {
            JsonGenerator jg = null;
            ResultSet rs = null;
            try {
                rs = (ResultSet) result.getData();
                rs.load(result.getResultSetLocation());
                Map<String, Object> properties = new HashMap<String, Object>(1);
                JsonGeneratorFactory jgf = Json.createGeneratorFactory(properties);
                jg = jgf.createGenerator(outputStream);

                jg.writeStartObject(); //Start Object
                jg.writeStartArray("columns");

                // Get columns
                for (Column column : rs.getColumns()) {
                    jg.write(column.toJson());
                }
                jg.writeEnd(); //End columns
                jg.writeStartArray("data");

                rs.beforeFirst();
                while (rs.next()) {
                    jg.writeStartArray(); //Begin Row Array
                    for (int columnIndex = 0; columnIndex < rs.getColumnSize(); columnIndex++) {
                        String value = rs.getString(columnIndex);
                        if (value != null) {
                            jg.writeStartObject();
                            jg.write(rs.getColumn(columnIndex).getName(), rs.getString(columnIndex));
                            jg.writeEnd();
                        }

                    }
                    jg.writeEnd(); //End Row Array
                }

                jg.writeEnd(); //End data
                jg.writeEnd(); //End Full Object

            } catch (ResultSetException | PersistableException e) {
                log.info("Error creating JSON Stream: " + e.getMessage());
            } finally {

                if (jg != null) {
                    jg.close();
                }
                if (rs != null && !rs.isClosed()) {
                    try {
                        rs.close();
                    } catch (ResultSetException e) {
                        e.printStackTrace();
                    }
                }

                if (outputStream != null) {
                    outputStream.close();
                }
            }

        }
    };
    return stream;
}

From source file:de.tu_dortmund.ub.data.dswarm.Init.java

public String call() {

    final String serviceName = config.getProperty(TPUStatics.SERVICE_NAME_IDENTIFIER);
    final String engineDswarmAPI = config.getProperty(TPUStatics.ENGINE_DSWARM_API_IDENTIFIER);
    final Optional<Boolean> optionalEnhanceInputDataResource = TPUUtil
            .getBooleanConfigValue(TPUStatics.ENHANCE_INPUT_DATA_RESOURCE, config);

    LOG.info(String.format("[%s][%d] Starting 'Init (Task)' ...", serviceName, cnt));

    try {//from  w  ww  .ja va 2s .c om

        final boolean doIngest;

        final String doIngestString = config.getProperty(TPUStatics.DO_INITIAL_DATA_MODEL_INGEST_IDENTIFIER);

        if (doIngestString != null && !doIngestString.trim().isEmpty()) {

            doIngest = Boolean.valueOf(doIngestString);
        } else {

            // default = true
            doIngest = true;
        }

        if (doIngest) {

            LOG.debug("[{}][{}] do data model creation with data ingest", serviceName, cnt);

            TPUUtil.initSchemaIndices(serviceName, config);
        }

        final String configurationFileName = config.getProperty(TPUStatics.CONFIGURATION_NAME_IDENTIFIER);
        final String configurationJSONString = readFile(configurationFileName, Charsets.UTF_8);
        final JsonObject configurationJSON = TPUUtil.getJsonObject(configurationJSONString);

        final String finalInputResourceFile;

        if (optionalEnhanceInputDataResource.isPresent()
                && Boolean.TRUE.equals(optionalEnhanceInputDataResource.get())) {

            final Optional<String> optionalUpdatedInputResourceFile = enhanceInputDataResource(initResourceFile,
                    configurationJSON);

            if (optionalUpdatedInputResourceFile.isPresent()) {

                finalInputResourceFile = optionalUpdatedInputResourceFile.get();
            } else {

                finalInputResourceFile = initResourceFile;
            }
        } else {

            finalInputResourceFile = initResourceFile;
        }

        final String name = String.format("resource for project '%s'", initResourceFile);
        final String description = String.format("'resource does not belong to a project' - case %d", cnt);
        final String inputResourceJson = uploadFileAndCreateResource(finalInputResourceFile, name, description,
                serviceName, engineDswarmAPI);

        if (inputResourceJson == null) {

            final String message = "something went wrong at resource creation";

            LOG.error(message);

            throw new RuntimeException(message);
        }

        final JsonObject inputResourceJSON = TPUUtil.getJsonObject(inputResourceJson);
        final String inputResourceID = inputResourceJSON.getString(DswarmBackendStatics.UUID_IDENTIFIER);
        LOG.info(String.format("[%s][%d] input resource id = %s", serviceName, cnt, inputResourceID));

        if (inputResourceID == null) {

            final String message = "something went wrong at resource creation, no resource uuid available";

            LOG.error(message);

            throw new RuntimeException(message);
        }

        // TODO: refactor this, so that a configuration only needs to be create once per TPU task
        // create configuration
        final String finalConfigurationJSONString = createConfiguration(configurationJSONString, serviceName,
                engineDswarmAPI);

        if (finalConfigurationJSONString == null) {

            final String message = "something went wrong at configuration creation";

            LOG.error(message);

            throw new RuntimeException(message);
        }

        final JsonObject finalConfigurationJSON = TPUUtil.getJsonObject(finalConfigurationJSONString);
        final String configurationID = finalConfigurationJSON.getString(DswarmBackendStatics.UUID_IDENTIFIER);
        LOG.info(String.format("[%s][%d] configuration id = %s", serviceName, cnt, configurationID));

        if (configurationID == null) {

            final String message = "something went wrong at configuration creation, no configuration uuid available";

            LOG.error(message);

            throw new RuntimeException(message);
        }

        // check for existing input schema
        final Optional<JsonObject> optionalInputSchema = getInputSchema(serviceName, engineDswarmAPI);

        // create the datamodel (will use it's resource)
        final String dataModelName = String.format("data model %d", cnt);
        final String dataModelDescription = String.format("data model description %d", cnt);
        final String dataModelJSONString = createDataModel(inputResourceJSON, finalConfigurationJSON,
                optionalInputSchema, dataModelName, dataModelDescription, serviceName, engineDswarmAPI,
                doIngest);

        if (dataModelJSONString == null) {

            final String message = "something went wrong at data model creation";

            LOG.error(message);

            throw new RuntimeException(message);
        }

        final JsonObject dataModelJSON = TPUUtil.getJsonObject(dataModelJSONString);
        final String dataModelID = dataModelJSON.getString(DswarmBackendStatics.UUID_IDENTIFIER);
        LOG.info(String.format("[%s][%d] data model id = %s", serviceName, cnt, dataModelID));

        if (dataModelID == null) {

            final String message = "something went wrong at data model creation, no data model uuid available";

            LOG.error(message);

            throw new RuntimeException(message);
        }

        // we don't need to transform after each ingest of a slice of records,
        // so transform and export will be done separately
        LOG.info(String.format("[%s][%d] (Note: Only ingest, but no transformation or export done.)",
                serviceName, cnt));

        final StringWriter stringWriter = new StringWriter();
        final JsonGenerator jp = Json.createGenerator(stringWriter);

        jp.writeStartObject();
        jp.write(DATA_MODEL_ID, dataModelID);
        jp.write(RESOURCE_ID, inputResourceID);
        jp.write(CONFIGURATION_ID, configurationID);
        jp.writeEnd();

        jp.flush();
        jp.close();

        final String result = stringWriter.toString();

        stringWriter.flush();
        stringWriter.close();

        return result;
    } catch (final Exception e) {

        final String message = String.format("[%s][%d] Processing resource '%s' failed with a %s", serviceName,
                cnt, initResourceFile, e.getClass().getSimpleName());

        LOG.error(message, e);

        throw new RuntimeException(message, e);
    }
}

From source file:de.tu_dortmund.ub.data.dswarm.Init.java

/**
 * creates a data model from given resource + configuration JSON (+ optional input schema)
 *
 * @param resourceJSON//from w  w  w.j  av a2s  .c  o m
 * @param configurationJSON
 * @param optionalInputSchema
 * @param name
 * @param description
 * @return responseJson
 * @throws Exception
 */
private String createDataModel(final JsonObject resourceJSON, final JsonObject configurationJSON,
        final Optional<JsonObject> optionalInputSchema, final String name, final String description,
        final String serviceName, final String engineDswarmAPI, final boolean doIngest) throws Exception {

    try (final CloseableHttpClient httpclient = HttpClients.createDefault()) {

        final String uri = engineDswarmAPI + DswarmBackendStatics.DATAMODELS_ENDPOINT + APIStatics.QUESTION_MARK
                + DswarmBackendStatics.DO_DATA_MODEL_INGEST_IDENTIFIER + APIStatics.EQUALS + doIngest;

        final HttpPost httpPost = new HttpPost(uri);

        final StringWriter stringWriter = new StringWriter();
        final JsonGenerator jp = Json.createGenerator(stringWriter);

        jp.writeStartObject();
        jp.write(DswarmBackendStatics.NAME_IDENTIFIER, name);
        jp.write(DswarmBackendStatics.DESCRIPTION_IDENTIFIER, description);
        jp.write(CONFIGURATION_IDENTIFIER, configurationJSON);
        jp.write(DswarmBackendStatics.DATA_RESOURCE_IDENTIFIER, resourceJSON);

        if (optionalInputSchema.isPresent()) {

            LOG.info("[{}][{}] add existing input schema to input data model", serviceName, cnt);

            jp.write(DswarmBackendStatics.SCHEMA_IDENTIFIER, optionalInputSchema.get());
        }

        jp.writeEnd();

        jp.flush();
        jp.close();

        final StringEntity reqEntity = new StringEntity(stringWriter.toString(),
                ContentType.create(APIStatics.APPLICATION_JSON_MIMETYPE, Consts.UTF_8));

        stringWriter.flush();
        stringWriter.close();

        httpPost.setEntity(reqEntity);

        LOG.info(String.format("[%s][%d] request : %s", serviceName, cnt, httpPost.getRequestLine()));

        try (final CloseableHttpResponse httpResponse = httpclient.execute(httpPost)) {

            final int statusCode = httpResponse.getStatusLine().getStatusCode();

            final String message = String.format("[%s][%d] %d : %s", serviceName, cnt, statusCode,
                    httpResponse.getStatusLine().getReasonPhrase());

            final String response = TPUUtil.getResponseMessage(httpResponse);

            switch (statusCode) {

            case 201: {

                LOG.info(message);

                LOG.debug(String.format("[%s][%d] responseJson : %s", serviceName, cnt, response));

                return response;
            }
            default: {

                LOG.error(message);

                throw new Exception("something went wrong at data model creation: " + message + " " + response);
            }
            }
        }
    }
}

From source file:org.kuali.student.myplan.course.controller.CourseSearchController.java

@RequestMapping(value = "/course/updateFacets")
public void updateFacets(HttpServletResponse response, HttpServletRequest request) {
    String formKey = request.getParameter(FORM_KEY_PARAM);
    response.setHeader("content-type", "application/json");
    response.setHeader("Cache-Control", "No-cache");
    response.setHeader("Cache-Control", "No-store");
    response.setHeader("Cache-Control", "max-age=0");

    HashMap<String, Object> meetingResults = new HashMap<String, Object>();
    String meetings = request.getParameter(MEETING_FACETS_PARAM);

    CourseSearchForm searchForm = null;//from w w w. j a  v a 2s  .c o m
    if (StringUtils.hasText(formKey)) {
        try {
            meetingResults = new ObjectMapper().readValue(meetings, HashMap.class);
        } catch (IOException e) {
            e.printStackTrace();
        }
        searchForm = (CourseSearchForm) ((UifFormManager) request.getSession().getAttribute("formManager"))
                .getSessionForm(formKey);
        Map<String, List<String>> meetingfacets = searchForm.getMeetingFacets();
        for (String meeting : meetingResults.keySet()) {
            List<String> values = new ArrayList<String>();
            if (StringUtils.hasText((String) meetingResults.get(meeting))) {
                values = Arrays.asList(((String) meetingResults.get(meeting)).split(","));

            }
            meetingfacets.put(meeting, values);
        }
        searchForm.setMeetingFacets(meetingfacets);
    }

    StringWriter stringWriter = new StringWriter();
    JsonGenerator jsonString = Json.createGenerator(stringWriter);
    jsonString.writeStartObject();
    try {
        jsonString.write("STATUS", "SUCCESS");
        jsonString.writeEnd().flush();
        response.getWriter().println(stringWriter.toString());
    } catch (Exception e) {
        logger.error("Could not write the response", e);
    }

}

From source file:iing.uabc.edu.mx.persistencia.util.JSON.java

private static void stringifyObject(JsonGenerator generator, BeanManager manager) {

    String keyName;/*from  www  . j a va  2s.  c  o m*/

    Field[] fields = manager.getFields();

    //Read every field and transform  it to a json property string
    for (Field field : fields) {
        Class fieldType = manager.getType(field.getName());
        keyName = field.getName();
        Object value = manager.getProperty(keyName);

        System.out.println("KeyName: " + keyName);
        System.out.println("Valor " + keyName + ": " + value);

        if (value == null) {
            //Set to null the property
            generator.writeNull(keyName);
            continue;
        }
        //Is a String
        if (fieldType == String.class) {
            generator.write(keyName, String.valueOf(value));
        } //Is a Date
        else if (fieldType == Date.class) {
            String date = DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.format(value);

            generator.write(keyName, date);

        } //Is a integer
        else if (fieldType == Integer.class || fieldType == Integer.TYPE) {
            generator.write(keyName, (int) value);
        } //Is a double
        else if (fieldType == Double.class || fieldType == Double.TYPE) {
            generator.write(keyName, (double) value);
        } //Is boolean
        else if (fieldType == Boolean.class || fieldType == Boolean.TYPE) {
            generator.write(keyName, (boolean) value);
        } //Is a collection
        else if (value instanceof Collection) {
            Class elementClass = manager.getCollectionElementType(keyName);

            System.out.println("Nueva Colleccion [] de clase: " + elementClass.getSimpleName());

            generator.writeStartArray(keyName);

            //Create new collection manager with the given class
            CollectionManager collectionManager = new CollectionManager((Collection) value, elementClass);

            stringifyArray(generator, collectionManager);

            generator.writeEnd();
        } else {
            //Is a object... probably
            BeanManager objectManager = new BeanManager(value);

            System.out.println("Nuevo Objecto {}: " + value.getClass().getSimpleName());
            generator.writeStartObject(keyName);

            stringifyObject(generator, objectManager);

            generator.writeEnd();
        }
    }

}

From source file:iing.uabc.edu.mx.persistencia.util.JSON.java

public static void stringifyArray(JsonGenerator generator, CollectionManager manager) {

    //Get size of the array to start stringifying elements
    //Note that the elements of this array has to be of the same class
    Collection collection = manager.getCollection();
    Class elementType = manager.getElementClass();

    System.out.println("Coleccion de tamanio " + collection.size());

    int i = 0;//w  w  w.  java 2 s.  com
    //Read every element and transform  it to a json array element string
    for (Iterator it = collection.iterator(); it.hasNext();) {
        Object element = it.next();

        System.out.println("Elemento: [" + i + "], Valor: " + element);

        if (element == null) {
            //Set to null the property
            generator.writeNull();
            continue;
        }

        //Is a String
        if (elementType == String.class) {
            generator.write(String.valueOf(element));
        } //Is a Date
        else if (elementType == Date.class) {
            String date = DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.format(element);

            generator.write(date);

        } //Is a integer
        else if (elementType == Integer.class || elementType == Integer.TYPE) {
            generator.write((int) element);
        } //Is a double
        else if (elementType == Double.class || elementType == Double.TYPE) {
            generator.write((double) element);
        } //Is boolean
        else if (elementType == Boolean.class || elementType == Boolean.TYPE) {
            generator.write((boolean) element);

        } //Is a collection (Not implemented)
        else if (element instanceof Collection) {
            //                Class elementClass = manager.getCollectionElementType(keyName);
            //
            //                System.out.println("Nueva Colleccion [] de clase: "
            //                        + elementClass.getSimpleName());
            //
            //                generator.writeStartArray(keyName);
            //
            //                //Create new collection manager with the given class
            //                CollectionManager collectionManager
            //                        = new CollectionManager((Collection) value, elementClass);
            //
            //                generator.writeEnd();
        } else {
            //Is a object... probably
            BeanManager objectManager = new BeanManager(element);

            System.out.println("Nuevo Objecto {}: " + element.getClass().getSimpleName());
            generator.writeStartObject();

            stringifyObject(generator, objectManager);

            generator.writeEnd();
        }
    }
}

From source file:de.tu_dortmund.ub.data.dswarm.Transform.java

/**
 * configuration and processing of the task
 *
 * @param inputDataModelID/*  w  w  w. ja v a  2 s. c o  m*/
 * @param projectIDs
 * @param outputDataModelID
 * @return
 */
private String executeTask(final String inputDataModelID, final Collection<String> projectIDs,
        final String outputDataModelID, final String serviceName, final String engineDswarmAPI,
        final Optional<Boolean> optionalDoIngestOnTheFly, final Optional<Boolean> optionalDoExportOnTheFly,
        final Optional<String> optionalExportMimeType, final Optional<String> optionalExportFileExtension)
        throws Exception {

    final JsonArray mappings = getMappingsFromProjects(projectIDs, serviceName, engineDswarmAPI);
    final JsonObject inputDataModel = getDataModel(inputDataModelID, serviceName, engineDswarmAPI);
    final JsonObject outputDataModel = getDataModel(outputDataModelID, serviceName, engineDswarmAPI);
    final Optional<JsonObject> optionalSkipFilter = getSkipFilter(serviceName, engineDswarmAPI);

    // erzeuge Task-JSON
    final String persistString = config.getProperty(TPUStatics.PERSIST_IN_DMP_IDENTIFIER);

    final boolean persist;

    if (persistString != null && !persistString.trim().isEmpty()) {

        persist = Boolean.valueOf(persistString);
    } else {

        // default is false
        persist = false;
    }

    final StringWriter stringWriter = new StringWriter();
    final JsonGenerator jp = Json.createGenerator(stringWriter);

    jp.writeStartObject();
    jp.write(DswarmBackendStatics.PERSIST_IDENTIFIER, persist);
    // default for now: true, i.e., no content will be returned
    jp.write(DswarmBackendStatics.DO_NOT_RETURN_DATA_IDENTIFIER, true);
    // default for now: true, i.e., if a schema is attached it will utilised (instead of being derived from the data resource)
    jp.write(DswarmBackendStatics.UTILISE_EXISTING_INPUT_IDENTIFIER, true);

    if (optionalDoIngestOnTheFly.isPresent()) {

        final Boolean doIngestOnTheFly = optionalDoIngestOnTheFly.get();

        if (doIngestOnTheFly) {

            LOG.info(String.format("[%s][%d] do ingest on-the-fly", serviceName, cnt));
        }

        jp.write(DswarmBackendStatics.DO_INGEST_ON_THE_FLY, doIngestOnTheFly);
    }

    if (optionalDoExportOnTheFly.isPresent()) {

        final Boolean doExportOnTheFly = optionalDoExportOnTheFly.get();

        if (doExportOnTheFly) {

            LOG.info(String.format("[%s][%d] do export on-the-fly", serviceName, cnt));
        }

        jp.write(DswarmBackendStatics.DO_EXPORT_ON_THE_FLY, doExportOnTheFly);
    }

    jp.write(DswarmBackendStatics.DO_VERSIONING_ON_RESULT_IDENTIFIER, false);

    // task
    jp.writeStartObject(DswarmBackendStatics.TASK_IDENTIFIER);
    jp.write(DswarmBackendStatics.NAME_IDENTIFIER, "Task Batch-Prozess 'CrossRef'");
    jp.write(DswarmBackendStatics.DESCRIPTION_IDENTIFIER,
            "Task Batch-Prozess 'CrossRef' zum InputDataModel 'inputDataModelID '");

    // job
    jp.writeStartObject(DswarmBackendStatics.JOB_IDENTIFIER);
    jp.write(DswarmBackendStatics.UUID_IDENTIFIER, UUID.randomUUID().toString());
    jp.write(DswarmBackendStatics.MAPPINGS_IDENTIFIER, mappings);

    if (optionalSkipFilter.isPresent()) {

        jp.write(DswarmBackendStatics.SKIP_FILTER_IDENTIFIER, optionalSkipFilter.get());
    }

    jp.writeEnd();

    jp.write(DswarmBackendStatics.INPUT_DATA_MODEL_IDENTIFIER, inputDataModel);
    jp.write(DswarmBackendStatics.OUTPUT_DATA_MODEL_IDENTIFIER, outputDataModel);

    // end task
    jp.writeEnd();

    // end request
    jp.writeEnd();

    jp.flush();
    jp.close();

    final String task = stringWriter.toString();
    stringWriter.flush();
    stringWriter.close();

    LOG.debug(String.format("[%s][%d] task : %s", serviceName, cnt, task));

    try (final CloseableHttpClient httpclient = HttpClients.createDefault()) {

        // POST /dmp/tasks/
        final HttpPost httpPost = new HttpPost(engineDswarmAPI + DswarmBackendStatics.TASKS_ENDPOINT);
        final StringEntity stringEntity = new StringEntity(task, ContentType.APPLICATION_JSON);
        stringEntity.setChunked(true);

        final String mimetype;

        if (optionalDoExportOnTheFly.isPresent() && optionalDoExportOnTheFly.get()) {

            if (optionalExportMimeType.isPresent()) {

                mimetype = optionalExportMimeType.get();
            } else {

                // default export mime type is XML
                mimetype = APIStatics.APPLICATION_XML_MIMETYPE;
            }
        } else {

            mimetype = APIStatics.APPLICATION_JSON_MIMETYPE;
        }

        httpPost.setHeader(HttpHeaders.ACCEPT, mimetype);
        //httpPost.setHeader(HttpHeaders.TRANSFER_ENCODING, CHUNKED_TRANSFER_ENCODING);

        httpPost.setEntity(stringEntity);

        final Header[] requestHeaders = httpPost.getAllHeaders();

        final String printedRequestHeaders = printHeaders(requestHeaders);

        LOG.info(String.format("[%s][%d] request : %s :: request headers : \n'%s' :: body : '%s'", serviceName,
                cnt, httpPost.getRequestLine(), printedRequestHeaders, stringEntity));

        try (final CloseableHttpResponse httpResponse = httpclient.execute(httpPost)) {

            final Header[] responseHeaders = httpResponse.getAllHeaders();

            final String printedResponseHeaders = printHeaders(responseHeaders);

            LOG.info(String.format("[%s][%d]  response headers : \n'%s'", serviceName, cnt,
                    printedResponseHeaders));

            final int statusCode = httpResponse.getStatusLine().getStatusCode();

            switch (statusCode) {

            case 204: {

                LOG.info(String.format("[%s][%d] %d : %s", serviceName, cnt, statusCode,
                        httpResponse.getStatusLine().getReasonPhrase()));

                EntityUtils.consume(httpResponse.getEntity());

                return "success";
            }
            case 200: {

                if (optionalDoExportOnTheFly.isPresent() && optionalDoExportOnTheFly.get()) {

                    LOG.info(String.format("[%s][%d] %d : %s", serviceName, cnt, statusCode,
                            httpResponse.getStatusLine().getReasonPhrase()));

                    final String exportFileExtension;

                    if (optionalExportFileExtension.isPresent()) {

                        exportFileExtension = optionalExportFileExtension.get();
                    } else {

                        // XML as default file ending
                        exportFileExtension = TaskProcessingUnit.XML_FILE_ENDING;
                    }

                    // write result to file
                    final String fileName = TPUUtil.writeResultToFile(httpResponse, config,
                            outputDataModelID + "-" + inputDataModelID + "-" + cnt, exportFileExtension);

                    return "success - exported XML to '" + fileName + "'";
                }
            }
            default: {

                LOG.error(String.format("[%s][%d] %d : %s", serviceName, cnt, statusCode,
                        httpResponse.getStatusLine().getReasonPhrase()));

                final String response = TPUUtil.getResponseMessage(httpResponse);

                throw new Exception("something went wrong at task execution" + response);
            }
            }
        }
    }
}