Piotr Rusin piorus

Get a more debugable error message when DOM validation fails in Magento.

Original Error Message

1 exception(s):
Exception #0 (Magento\Framework\Config\Dom\ValidationException): Element 'arguments': This element is not expected.
Line: 1471

About

I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

On WG server, I started an iperf3 server
On WG peer, I wrote a script that does the following:
- wg-quick down wg0
Edit MTU in the /etc/wireguard/wg0.conf file

set -e, -u, -o, -x pipefail

The set lines

These lines deliberately cause your script to fail. Wait, what? Believe me, this is a good thing.
With these settings, certain common errors will cause the script to immediately fail, explicitly and loudly. Otherwise, you can get hidden bugs that are discovered only when they blow up in production.

set -euxo pipefail is short for:

set -e
set -u

Simple automated GIT Deployment using GIT Hooks

Here are the simple steps needed to create a deployment from your local GIT repository to a server based on this in-depth tutorial.

How it works

You are developing in a working-copy on your local machine, lets say on the master branch. Most of the time, people would push code to a remote server like github.com or gitlab.com and pull or export it to a production server. Or you use a service like deepl.io to act upon a Web-Hook that's triggered that service.

Google cloud's ssh command lets you pass standard ssh flags. To, for example, forward local port 8088 to port 8088 on a vm instance, all you need to do is:

gcloud compute  ssh --ssh-flag="-L 8088:localhost:8088"  --zone "us-central1-b" "example_instance_name"

Now browsing to localhost:8088 works as it would with standard ssh.

Translation Mechanism in Magento 2.x Platform

This article discusses the translation mechanism in Magento 2.x, and contrasts it with that of Magento 1.x. The intended audience is Magento developers who would like to better learn the Magento architecture.

The Magento 2.x source code described here has been available since Magento 2.0.0.0-dev46 release and can be viewed on the GitHub at https://github.com/magento/magento2/commit/0849373d7636cfa17b70b8188bfc36d13ae749c1 or later commits.

Implementation Overview in Magento 1.x

Magento 1.x can present the user interface in different languages without modifying the actual application source code—it translates the system messages, error messages, and labels for display in the UI. Some messages may be displayed in logs for a system administrator or a developer—those don't need to be translated. By convention, in the source code, the labels and system messages for UI are expressed in English (en_US).

Deploy your site with git

This gist assumes:

you have a local git repo
with an online remote repository (github / bitbucket etc)
and a cloud server (Rackspace cloud / Amazon EC2 etc)
- your (PHP) scripts are served from /var/www/html/
- your webpages are executed by apache
apache's home directory is /var/www/

	import sys; from PIL import Image; import numpy as np

	chars = np.asarray(list(' .,:;irsXA253hMHGS#9B&@'))

	if len(sys.argv) != 4: print( 'Usage: ./asciinator.py image scale factor' ); sys.exit()
	f, SC, GCF, WCF = sys.argv[1], float(sys.argv[2]), float(sys.argv[3]), 7/4

	img = Image.open(f)
	S = ( round(img.size[0]SCWCF), round(img.size[1]*SC) )
	img = np.sum( np.asarray( img.resize(S) ), axis=2)

	// Just before switching jobs:
	// Add one of these.
	// Preferably into the same commit where you do a large merge.
	//
	// This started as a tweet with a joke of "C++ pro-tip: #define private public",
	// and then it quickly escalated into more and more evil suggestions.
	// I've tried to capture interesting suggestions here.
	//
	// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
	// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

	from glfwpy.glfw import (AUTO_POLL_EVENTS, OPENED, OPENGL_CORE_PROFILE,
	OPENGL_FORWARD_COMPAT, OPENGL_PROFILE, OPENGL_VERSION_MAJOR,
	OPENGL_VERSION_MINOR, WINDOW,
	Enable, GetWindowParam, Init, OpenWindow, OpenWindowHint,
	SetKeyCallback, SetWindowTitle, SwapBuffers, Terminate)
	import numpy as np
	from OpenGL.arrays import ArrayDatatype
	from OpenGL.GL import (GL_ARRAY_BUFFER, GL_COLOR_BUFFER_BIT,
	GL_COMPILE_STATUS, GL_FALSE, GL_FLOAT, GL_FRAGMENT_SHADER,
	GL_LINK_STATUS, GL_RENDERER, GL_SHADING_LANGUAGE_VERSION,