Deploy your source maps to Rollbar with Ansible

Posted on 2018-07-16 in Trucs et astuces • Tagged with Rollbar, Python, Ansible

I recently had to integrate Rollbar (a service to track errors) with a JS application. One nice thing about Rollbar is that if you provide it with source maps, it will point to you where the error is in the original unminified code.

Since the application is deployed with Ansible …

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Timeout a function in python

Posted on 2018-06-02 in Trucs et astuces • Tagged with Python

You can use signals and a context manager to acheive this. The idea is to register a function that will raise an exeption when the alarm signal is received and schedule the alarm signal for the timeout.

import signal
from contextlib import contextmanager

def timeout(time):
    # Register a function …

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Some tips for django

Posted on 2018-05-21 in Trucs et astuces • Tagged with Python, Web, Django

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JavaScript tips

Posted on 2018-03-07 in Trucs et astuces • Tagged with JavaScript

Normalize an UTF-8 string

Rely on String.prototype.normalize().

const str = "Crème Brulée"
str.normalize('NFD').replace(/[\u0300-\u036f]/g, "")
> 'Creme Brulee'


PostgreSQL tips

Posted on 2018-03-07 in Trucs et astuces • Tagged with PostgreSQL, Database, SQL

Update fields in JSONB format

Use the jsonb_set(COLUMN_NAME, PATH_TO_CHANGE, VALUE) function. The value must be a valid value in JSON (ie use '500' …

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Run multiple docker daemons on the same host

Posted on 2018-02-25 in Programmation • Tagged with Docker, Linux

Today I am going to explain how you can run multiple docker daemons on the same host. This can be useful if you want several users to use docker and want each of them to be isolated from one another (ie don't see images, containers, … of other users). The solution …

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Can we clean password from PHP memory?

Posted on 2017-11-26 in Programmation • Tagged with php, Docker, security

At work in a PHP application, we rely on libsodium to erase a password from $_POST. It may sound like a good idea: once the password is not in memory any more, it can't leak. But the question is: is it really erased from memory? That's the question will answer …

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How to cache Python module in Gitlab CI

Posted on 2017-08-20 in Trucs et astuces • Tagged with gitlab, ci, Python

By default, pip cache will be in ~/.pip. However, this folder cannot be cached by Gitlab. The trick is to force pip to use a folder located in the build directory with the --cache-dir option. You can then cache this folder.

For instance, you can use .pip as in the …

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nginx tips

Posted on 2017-08-19 in Trucs et astuces • Tagged with nginx

CORS for multiple domains

location ~* \.(?:ttf|ttc|otf|eot|woff|woff2)$ {
    if ( $http_origin ~* (https?://(.+\.)?(domain1|domain2|domain3)\.(?:me|co|com)$) ) {
        add_header "Access-Control-Allow-Origin" "$http_origin";


Integrate Rollbar with Aurelia

Posted on 2017-08-19 in Aurelia • Tagged with aurelia, rollbar

I recently integrated Rollbar (a service to Detect, diagnose and debug errors with ease) into an Aurelia application. I explain here how I did it. I start by explaining how logging works with Aurelia and then how I integrated Rollbar into this.

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