velizarn’s gists

velizarn / promise-chain-run-all.js

Last active January 3, 2018 08:16

Run array of promises despite of the result

	'use strict'

	global.state = {
	time: null,
	user: null,
	photo: null,
	book: null
	}

	const { getTime, getUser, getPhoto, getBook } = require('./promise_modules')

velizarn / load-test.js

Last active January 1, 2018 11:18

Run a load test on a given URL


	const http = require('http')

	let getData = (rand = 1) => {

	return new Promise((resolve, reject) => {

	try {

	let url = 'http://localhost:3000/db/products.count?v=' + rand

velizarn / dbUtils.js

Last active December 31, 2017 16:26

How to reuse mongodb connection through Promise

	'use strict'

	const assert = require('assert')

	module.exports = {

	getProductsCount: (req, res) => {

	return new Promise((resolve, reject) => {

velizarn / promise-chained.js

Last active December 28, 2017 07:37


	const crypto = require('crypto'), https = require('https')
	// --------------------------------------------------------------------

	let setString = (str = '') => {

	return new Promise((resolve, reject) => {

	let _name = str \|\| 'John Doe';

velizarn / promise.js

Last active December 28, 2017 07:38

JavaScript basic Promise example

	let getName = () => {

	return new Promise((resolve, reject) => {

	let name = "John Doe";

	try {
	setTimeout (() => {
	resolve( name )
	}, 1500)

velizarn / sendgrid.bash

Last active April 22, 2025 15:40

Send email from bash script by using SendGrid API

	#!/bin/bash

	SENDGRID_API_KEY=""
	EMAIL_TO=""
	FROM_EMAIL=""
	FROM_NAME=""
	SUBJECT=""

	bodyHTML="<p>Email body goes here</p>"

velizarn / iptables-custom-log.bash

Last active January 18, 2017 17:50

Log iptables messages in a custom file with rsyslog

	#!/bin/bash

	IPTABLES_CONF_FILE=/etc/rsyslog.d/iptables.conf

	echo ':msg, contains, ": IPTables Packet Dropped: " /var/log/iptables.log' > $IPTABLES_CONF_FILE
	echo ':msg, contains, ": IPTables Packet Dropped: " ~' >> $IPTABLES_CONF_FILE

	systemctl restart rsyslog

	# http://blog.stalkr.net/2009/10/logging-iptables-messages-with-rsyslog.html

velizarn / ip6tables_setup.bash

Last active December 22, 2025 18:51

Basic setup for ip6tables - drop all traffic except local, ICMP and DHCPv6 traffic.

	#!/bin/bash

	# http://serverfault.com/questions/410321/debian-ip6tables-rules-setup-for-ipv6/410327#410327
	# http://ipset.netfilter.org/iptables.man.html
	# https://www.sixxs.net/wiki/IPv6_Firewalling
	# https://www.cyberciti.biz/faq/ip6tables-ipv6-firewall-for-linux/
	# https://gist.github.com/thomasfr/9712418
	# https://gist.github.com/SnakeDrak/f4150f6e517e5a1d525f
	# http://www.thegeekstuff.com/2011/06/iptables-rules-examples
	# http://www.thegeekstuff.com/scripts/iptables-rules

velizarn / nodejs app.launch

Last active December 9, 2016 19:55

Eclipse External Tool Configurations - run selected nodejs file

	<?xml version="1.0" encoding="UTF-8" standalone="no"?>
	<launchConfiguration type="org.eclipse.ui.externaltools.ProgramLaunchConfigurationType">
	<listAttribute key="org.eclipse.debug.ui.favoriteGroups">
	<listEntry value="org.eclipse.ui.externaltools.launchGroup"/>
	</listAttribute>
	<stringAttribute key="org.eclipse.ui.externaltools.ATTR_LAUNCH_CONFIGURATION_BUILD_SCOPE" value="${none}"/>
	<stringAttribute key="org.eclipse.ui.externaltools.ATTR_LOCATION" value="D:\programs\nodejs\node.exe"/>
	<stringAttribute key="org.eclipse.ui.externaltools.ATTR_TOOL_ARGUMENTS" value="${selected_resource_name}"/>
	<stringAttribute key="org.eclipse.ui.externaltools.ATTR_WORKING_DIRECTORY" value="${container_loc}"/>
	</launchConfiguration>

velizarn / obtain_token.js

Last active September 5, 2024 10:12

Obtain OAuth token in Nodejs for SalesForce Commerce Cloud OCAPI (previously Demandware)

	const https = require('https')

	const headers = {
	'Authorization' : 'Basic YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhOmFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==',
	'Content-Type' : 'application/x-www-form-urlencoded'
	}

	const optionsget = {
	host : 'account.demandware.com',
	port : 443,

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