Node DAX

A node js library for making queries to DAX.

Make talking to DAX via Node JS fun

Do fun things like:

• Build and Store Report Requests
• Lazily Fetch Reports
• Destructure Reports

Remember, stats are fun!

Installation

Install node-dax as a library using npm:

npm install node-dax --save

Example

var dax = require('./index');
dax.logger.enabled = false;

var startDate = 'today-14';
var endDate = 'today-1';
var bucket = 'bucket';
var client = 'client';

var reportRequest = dax.requestBuilder(12345, {
    'name': 'demo.home.page',
    'app_name': 'demo',
    'app_type': 'example'
}, bucket, client, startDate, endDate);

console.info('Report Request:', reportRequest);

dax.fetchReport('demo', reportRequest).then(function(result) {
    var report = dax.destructureReport(result);
    console.log(report);
}).catch(function(error) {
    console.error(error);
});

API Methods

var api = require('node-dax');

api.requestBuilder(reportId, parameters, site, client, startdate, enddate)

Creates a DAX POST request, valid against the supplied parameters. DAX will tell you if you've made an logical or access based errors based off this request format. It can be used directly with the request library available on npm.

api.destructureReport(reportData)

Removes unnecessary layers of structuring from the data returned by DAX. Can be wired in to the output of api.fetchReport or api.fetchReportNow.

api.fetchReport(name, reportRequest, storagePath, requester, notify, cacheTimeMs)

Lazily fetches a report based on the name, and reportRequest. It returns whatever is stored in a local file cache, or an error, and then goes away and tries to make the DAX report. The notify method will be called once the data is received and written to disk.

api.fetchReportNow(name, reportRequest, requester)

Fetches a report, now! Immediately goes off and hits DAX with a request. Not recommended if you have account limits on how frequent you can hit DAX. The api.fetchReport is the recommend method of attack, but this method will help you debug parameter issues more easily.

api.logger

Allows logging to be turned on or off, or redirected to a custom target.

Has three methods:

• logger.log
• logger.info
• logger.error

Has two configurable properties:

• logger.enabled, default false
• logger.target, default console

Change Log

1.1.0

• Added samplingrate to request builder

1.0.4

• Added support for statistics in Destructure Report

1.0.3

• Fully tested set of functions for accessing a basic DAX Report
• Report Request Builder: create a workable DAX report request in the correct format
• Report Fetcher: make a request to DAX and recognize basic errors
• Lazy Report Fetcher: make requests to DAX using a local file cache
• Destructure Report: remove unnecessary layers of object structure from report