Hello World - Kinvey Flex SDK

Hello Friends,

Recently I have started work in Node.js for one of our project's backend development, We are using kinvey for our backend and I'm responsible for all the backend architecture & development. So in this post I'm going to show you usage of kinvey's flex sdk to create simple node service and run it.

1 - Create package

$ mkdir helloworld
$ cd helloworld
$ npm init

2 - Install kinvey flex sdk in you node package.

$ npm install kinvey-flex-sdk --save

3 - To use kinvey flex module in your project add require as following.

const sdk = require('kinvey-flex-sdk');

4 - Check IP address of your work station or server.

My macbook has 192.168.1.123

5 - Write flex function code

// File : index.js
const sdk = require('kinvey-flex-sdk');
sdk.service({ host: '192.168.1.123', port: 8080 }, function (err, flex) {
 
    const flexFunctions = flex.functions;   // gets the FlexFunctions object from the service
 
    function helloWorldHandler(request, complete, modules) {
            return complete({ "message": "Hello World" }).ok().done();
    }
    flexFunctions.register('helloWorld', helloWorldHandler);
});

6 - Run service

$ node index.js
$ Service listening on 8080

7 - Send request to our flex function, execute following command to see response from our node service that is written using kinvey's flex sdk.

$ curl -X POST -H "Content-Type: application/json"  -d '{}' "http://192.168.1.123:8080/_flexFunctions/helloWorld"

Above command will return following json response.

{"request":{"method":"POST","headers":{},"username":"","userId":"","objectName":"","tempObjectStore":{},"body":{}},"response":{"status":0,"headers":{},"body":{"message":"Hello World"},"statusCode":200,"continue":false}}

I hope this post will help you to understand basic of kinvey flex sdk, later I will try to write some posts on advance concepts of flex sdk.

Thanks.