Carlos Jenkins carlos-jenkins

Open Source, Engineering, Cats. Co-Founder of @kuralabs.

carlos-jenkins / predict.py

Created October 22, 2025 18:15

Linux kernel bonding driver hash algorithm Python equivalent for xmit_hash_policy=layer3+4 unfragmented TCP/UDP and IPv4

	import socket
	import struct


	def _ipv4_to_u32(ip_str: str) -> int:
	# network-order (big-endian) to host int
	return struct.unpack("!I", socket.inet_aton(ip_str))[0]


	def bond_layer3_4_hash_tcp(

carlos-jenkins / gone.html

Created June 8, 2022 02:58

Simple redirect page for domain change with manual link and countdown

	<html>
	<head>
	<title>This domain is gone. Redirecting...</title>
	<style>
	body {
	display: flex;
	justify-content: center;
	align-items: center;

	font-size: 2em;

carlos-jenkins / goinflux.py

Created October 14, 2020 02:25

InfluxDB bootstrap script

	#
	# Execute with:
	#
	# virtualenv venv
	# source venv/bin/activate
	# pip3 install influxdb
	# python3 goinflux.py
	#

	from influxdb import InfluxDBClient

carlos-jenkins / to_iso8601_and_back.py

Last active May 8, 2022 21:19

Create and parse ISO8601 with Offset with standard library only in Python 3.5 and 3.6

	# PARSING AN ISO8601 WITH OFFSET FORMATTED STRING USING A PYTHON VERSION PRIOR
	# TO 3.7 WITH THE STANDARD LIBRARY ONLY
	#
	#
	# For the formatting:
	#
	# This returns a datetime object with the timezone set to UTC.
	# The internal time can now be interpreted as UTC.
	#
	# datetime.now(timezone.utc)

carlos-jenkins / split.py

Last active November 4, 2019 20:17

Split a collection in two parts as defined by the given criteria.

	def split(iterable, criteria=lambda e: e):
	"""
	Split a collection in two parts as defined by the given criteria.

	Usage::

	>>> split([1,2,3,4,5,6], lambda e: e > 2)
	([3, 4, 5, 6], [1, 2])

	By default, the element itself is used as the criteria::

carlos-jenkins / cache.py

Last active October 4, 2019 00:00

Cache the result of a function for certain time.

	from time import monotonic
	from functools import wraps

	def cache(expiration_s):
	"""
	Cache the result of a function for certain time.

	There is one restriction: all arguments of the wrapped function must be
	immutable, that is, they must be used as key in a dictionary.

carlos-jenkins / jobqueue.groovy

Last active October 3, 2019 23:41

Jenkins script to get job queues

	import groovy.json.JsonOutput

	result = []

	Jenkins.instance.queue.items.each {
	// Only consider BuildableItem
	// Other known objects are:
	// - BlockedItem, which lacks the runId
	if (it instanceof Queue.BuildableItem) {
	result.add([

carlos-jenkins / kuraterm.glade

Last active April 2, 2023 13:28

Example of a Gtk application using a VTE terminal widget written in Python 3

	<?xml version="1.0" encoding="UTF-8"?>
	<!-- Generated with glade 3.22.1 -->
	<interface>
	<requires lib="gtk+" version="3.20"/>
	<requires lib="vte-2.91" version="0.52"/>
	<object class="GtkWindow" id="window">
	<property name="can_focus">False</property>
	<signal name="delete-event" handler="stop" swapped="no"/>
	<child>
	<placeholder/>

carlos-jenkins / nopenlimit.py

Created September 6, 2019 00:12

Get and set the NOPEN limit (maximum number of open files)

	from resource import RLIMIT_NOFILE, getrlimit, setrlimit


	def setfilelimits(limit):

	soft, hard = getrlimit(RLIMIT_NOFILE)
	if limit > hard:
	raise RuntimeError(
	'Unable to raise open files limit to {}. '
	'Hard limit is set to {}'.format(

carlos-jenkins / difftool.sh

Created July 19, 2019 20:44

Setup Meld for git difftool

	sudo apt install meld
	git config --global alias.difftree 'difftool --dir-diff'
	git config --global diff.tool meld
	git config --global difftool.prompt false

	# Now use it:
	# git difftree master..HEAD
	# git difftree e49286eb1acbae69058856c744676c63d1154ba6..57adcd018d6e11c0982187cddfce6ee2bb641c6d