Talha Awan TalhaAwan

Talha Awan is a Computer Science graduate and senior software engineer, with over a decade of experience in full-stack development and databases.

TalhaAwan / couchbase.js

Last active August 3, 2017 21:02

Couchbase, Node js. Find family tree, recursively collect ids of its leaf nodes, and get all leaf node documents with getMulti.

	var couchbase = require("couchbase");
	var cluster = new couchbase.Cluster("127.0.0.1:8091");
	var CbBucket = "aBucket";
	var pass = "12345678";

	var bucket = db.openBucket(CbBucket, password, function(err) {
	bucket.operationTimeout = 500 * 1000; //increase connection time
	if(err){
	throw err;
	}

TalhaAwan / couchbase.js

Created August 3, 2017 20:41

Couchbase CRUD operations Node js

	var uuid = require('uuid');
	var couchbase = require("couchbase");

	var cluster = new couchbase.Cluster("127.0.0.1:8091");
	var CbBucket = "aBucket";
	var pass = "12345678";

	//get
	var bucket = cluster.openBucket(CbBucket, pass, function(err) {
	if (err) {

TalhaAwan / lob.js

Created August 3, 2017 20:12

Node/Express endpoint to send post cards to multiple users (lob.com service)

	const Router = require('express').Router;
	const router = new Router();
	const Lob = require('lob')('test_3168a75ff1d5412e93168ff1de3747a1523'); //"lob": "^3.5.0",
	const async = require('async');

	router.post('/post-card', function(req, res){
	const users = req.body.users;
	async.mapLimit(users, 5, function(user, callback) {
	var to = {
	name: user.name,

TalhaAwan / twilio.js

Created August 3, 2017 19:47

Node/Express endpoint to send sms to multiple users

	const Router = require('express').Router;
	const router = new Router();
	const client = require('twilio')('xxxxxxx', 'xxxxx');

	router.post('/send-sms', function(req, res){
	var users = req.body.users
	var smsBody = req.body.smsBody;

	async.each(users, function(user, callback) {
	client.sendMessage({

TalhaAwan / csv-upload.js

Created August 3, 2017 19:32

Node/express endpoint to upload and process a csv file

	var fs = require('fs');

	var express = require('express');
	var multer = require('multer');
	var csv = require('fast-csv');

	var router = express.Router();
	var upload = multer({dest: 'tmp/csv/'});

	router.post('/upload', upload.single('file'), function (req, res, next) {

TalhaAwan / mandrill-email.js

Last active August 3, 2017 19:14

Node js script to send email with mandrill

	const mandrill = require('mandrill-api/mandrill');
	const config = require('./config');

	const mandrill_client = new mandrill.Mandrill(config.mandrill.apiKey);
	const mandrill_client_test = new mandrill.Mandrill(config.mandrill.testApiKey); // test client to emulate email sending

	// some data
	const noOftasks = 12;
	const perfomance = "improved";
	const name = "Talha Awan";

TalhaAwan / log.controller.js

Created August 3, 2017 18:40

Node/expresss endpoint to generate a downloadable link to csv file of mongodb collection "logs"

	const fs = require('fs');

	const json2csv = require('json2csv'); //"json2csv": "^3.7.3"
	const moment = require('moment'); //"moment": "^2.17.1"
	const mkdirp = require('mkdirp'); //"mkdirp": "^0.5.1",
	const del = require('del'); //"del": "^2.2.2"

	const fields = ['collection', 'message', 'createdAt'];
	const Log = require ( './log.model');
	const Controller = {};

TalhaAwan / rets-processor.js

Last active August 3, 2017 18:14

Node js script to process RETS (Real Estate Transaction Standard) properties.

	var rets = require('rets-client');
	var async = require('async');
	var moment = require('moment');

	var clientSettings = {
	loginUrl: 'http://maxebrdi.rets.paragonrels.com/rets/fnisrets.aspx/MAXEBRDI/login?rets-version=rets/1.7.2',
	username: "XXXXXXXXXXX",
	password: "XXXXXXXXXXX",
	version: 'RETS/1.7.2',
	userAgent: 'RETS node-client/4.x',

TalhaAwan / batch-process.js

Created August 3, 2017 14:31

Batch processing of user documents. Node, mongoose, async (whilst, eachLimit, waterfall), moment.

	var async = require("async");
	var moment = require('moment');
	var User = require('/path/to/user.js');

	module.exports = function(){
	var skip = 0;
	var limit = 700; //to process the users in batches of 700
	var newUsersFound = true;
	var userCount = 0;
	async.whilst(

TalhaAwan / scheduler.js

Last active August 3, 2017 18:41

Example node js scheduler to run jobs at intervals of seconds, minutes and days of weeks

	const CronJob = require('cron').CronJob;
	const moment = require('moment-timezone');

	const cronJobs = [
	{
	cronTime: "/20 * * * *",
	job: function (){
	console.log("Twenty seconds job has run");
	}
	},