Kony Fabric console User Guide: Integration > Advanced Configurations > Sample Code for Preprocessor and Postprocessor > JavaScript Sample Code for Preprocessor and Postprocessor

JavaScript Sample Code for Preprocessor and Postprocessor

PreProcessor

To add an input parameter:

 // Sample JavaScript Code to add an input parameter for preprocessor

function fun1() {
    logger.debug('Tesing put method of HashMap');
    serviceInputParams.put('place', 'London');
    return true;
}
fun1();

To add a new request parameter:

 // Sample JavaScript Code to add a request parameter for preprocessor 

function fun2() {
    logger.debug('Testing addRequestParam_ method of DataControllerRequest');
    request.addRequestParam_('newParam', 'newParamValue');
    return true;
}
fun2();

To add an attribute to the session:

 // Sample JavaScript Code to add an attribute to the session for preprocessor 

function fun3() {
    logger.debug('Tesing getSession method of DataControllerRequest');
    var varSession = request.getSession();
    varSession.setAttribute('sessionAttributeName', 'sessionAttributeValue');
    return true;
}
fun3();

To validate the input parameter before Service call:

 // Sample JavaScript Code to validate the input before service call for preprocessor 

function fun4() {
    var varUsername = serviceInputParams.get('username');
    var varPassword = serviceInputParams.get('password');
    if (varUsername == 'masterUser' && varPassword == 'password') {
        return true;
    }
    return false;
}
fun4();

A function which uses most of the request APIs:

 // Sample JavaScript Code for preprocessor 

function fun5() {
    logger.debug('Testing addRequestParam_ method of DataControllerRequest');
    request.addRequestParam_('newParam', 'newParamValue');
    
    var varParam = request.getParameter('newParam');
    logger.debug('The Param Value is :' + varParam);
    logger.debug('Tesing containsKeyInRequest method of DataControllerRequest');
    
    var varContainsKey = request.containsKeyInRequest('newParam');
    logger.debug('Does it contain newParam :' + varContainsKey);
    logger.debug('Tesing containsKeyInRequest method of DataControllerRequest');
    request.setAttribute('newAtt', 'newAttValue');
    
    var varContainsAttribute = request.containsKeyInRequestContext('newAt');
    logger.debug('Does it contain newAtt :' + varContainsAttribute);
    logger.debug('Tesing getAttribute method of DataControllerRequest');
    
    var varGetAttribute = request.getAttribute('newAtt');
    logger.debug('The value of attribute newAtt is :' + varGetAttribute);
    logger.debug('Tesing getHeader method of DataControllerRequest');
    
    var varHeader = request.getHeader('Host');
    logger.debug('The value of Host header is :' + varHeader);
    logger.debug('Tesing GetParameterValues method of DataControllerRequest');
    
    var varGetParameterValues = request.getParameterValues('newParam');
    for (var i in varGetParameterValues) {
        logger.debug('The Array Values are :' + varGetParameterValues[i]);
    }
    logger.debug('Tesing getRemoteAddr method of DataControllerRequest');
    
    var varGetRemoteAddr = request.getRemoteAddr();
    logger.debug('The Remote Address is :' + varGetRemoteAddr);
    logger.debug('Tesing put method of HashMap');
    serviceInputParams.put('place', 'London');
    serviceInputParams.put('city', 'Madras');
    serviceInputParams.put('country', 'india');
    logger.debug('Tesing getSession method of DataControllerRequest');
    
    var varSession = request.getSession();
    varSession.setAttribute('sessionAttributeName', 'sessionAttributeValue');
}
fun5();

For jsonToResult API

 For jsonToResult APIfunction executePreProcessor() {
    var resultToModify = resultToJSON();
    resultToModify.record = {
      "message" : "Returned from Pre-processor",
      "status" : "rejected"
    };
     
    result = jsonToResult(resultToModify);
    return false;
}

executePreProcessor();

PostProcessor

To add a new output parameter:

 // Sample JavaScript Code to add a new output parameter for postprocessor 

function fun5() {
    logger.debug('Tesing Adding a new Output Parameter');
    var newOutputParam = new com.konylabs.middleware.dataobject.Param();
    newOutputParam.setName('outputParamName');
    newOutputParam.setValue('outputParamValue');
    result.setParam(newOutputParam);
}
fun5();

To retrieve an attribute added to the session (from preprocessor):

 // Sample JavaScript Code to retrieve an attribute added to the session for postprocessor 

function fun6() {
    var varSessionPost = request.getSession();
    var varRequestSessionAttribute = varSessionPost.getAttribute('sessionAttributeName');
    logger.debug('The Session Attribute Value is :' + varRequestSessionAttribute);
}
fun6();

To add a custom device header:

 // Sample JavaScript Code to add a custom device header for postprocessor 

function fun7() {
    logger.debug('Tesing setDeviceHeaders method of DataControllerResponse');
    var varHashMap = new java.util.HashMap();
    varHashMap.put('newHeader', 'newHeaderValue');
    response.setDeviceHeaders(varHashMap);
}
fun7();

To add Datasets to result:

 // Sample JavaScript Code to add a dataset to result for postprocessor 

function fun8() {
    var varDataSet = new com.konylabs.middleware.dataobject.Dataset();
    var varRecord = new com.konylabs.middleware.dataobject.Record();
    var varParam = new com.konylabs.middleware.dataobject.Param();
    
    varParam.setName('ParamName');
    varParam.setValue('ParamValue');
    varRecord.setParam(varParam);
    varDataSet.setRecord(varRecord);
    varDataSet.setId('DataResponse');
    var varDataSet1 = new com.konylabs.middleware.dataobject.Dataset();
    var varRecord1 = new com.konylabs.middleware.dataobject.Record();
    var varParam1 = new com.konylabs.middleware.dataobject.Param();
    varParam1.setName('ParamName1');
    varParam1.setValue('ParamValue1');
    varRecord1.setParam(varParam1);
    varDataSet1.setRecord(varRecord1);
    varDataSet1.setId('DataResponse1');
    var varList = new java.util.ArrayList();
    varList.add(varDataSet1);
    varList.add(varDataSet);
    result.setDataSets(varList);
}
fun8();

A function which uses most of the response APIs:

 // Sample JavaScript Code for postprocessor 

function fun8() {
    var newOutputParam = new com.konylabs.middleware.dataobject.Param();
    newOutputParam.setName('outputParamName');
    newOutputParam.setValue('outputParamValue');
    result.setParam(newOutputParam);
    logger.debug('Tesing getAttribute method of DataControllerResponse');
    response.setAttribute('responseAttribute', 'responseAttributeValue');
    
    var varResponseAttribute = response.getAttribute('responseAttribute');
    logger.debug('The value of Response Attribute is :' + varResponseAttribute);
    logger.debug('Tesing getCharsetEncoding method of DataControllerResponse');
    
    var varCharsetEncoding = response.getCharsetEncoding();
    logger.debug('The value of getCharsetEncoding is :' + varCharsetEncoding);
    logger.debug('Tesing setDeviceHeaders method of DataControllerResponse');
    
    var varHashMap = new java.util.HashMap();
    
    varHashMap.put('newHeader', 'newHeaderValue');
    response.setDeviceHeaders(varHashMap);
    logger.debug('Tesing setStatusCode method of DataControllerResponse');
    
    varStatusCode = response.getStatusCode();
    logger.debug('The Current Status Code is :' + varStatusCode);
    response.setStatusCode(302);
    
    varStatusCode1 = response.getStatusCode();
    logger.debug('The Current Status Code is :' + varStatusCode1);
    
    var varSessionPost = request.getSession();
    var varRequestSessionAttribute = varSessionPost.getAttribute('sessionAttributeName');
    logger.debug('The Session Attribute Value is :' + varRequestSessionAttribute);
}
fun8();

To set custom httpStatusCode params through JavaScript postprocessor in result:

function changeHttpStatusCode() {
    result.getParamByName("httpStatusCode").setValue(300);
} 
changeHttpStatusCode();

To set custom opstatus params through JavaScript postprocessor in result:

function changeOpstatus() {
    result.getParamByName("opstatus").setValue(1);
} 
changeOpstatus();

For resultToJSON API

 function getCertificate_Postprocessor(){
    var resultToModify = resultToJSON();

    if(resultToModify.records &amp;&amp; resultToModify.records.length &gt; 0){
        var cert = resultToModify.records[0];

        resultToModify.certificate = [{
            "online_course": true,
            "doctor": {
                "id": cert.doctor.doctor_id,
                "email": cert.doctor.doctor_email,
            },
            "entity": {
                "id": cert.entity.entity_id,
                "email": cert.entity.entity_email,
                "doc_num": cert.entity.entity_doc_num,
            }
        }];
         
        return resultToModify;
    }
}

getCertificate_Postprocessor();