tech_\
giberrish

by Paweł Chudzik

spring.factories

java

Have you ever wondered how it’s possible that spring-boot is able to pick up whatever you have on the classpath and configure application context to your needs based on some conventions and bit of black magic? In this post, I’m going to dig into spring.factories file on which most of the spring-boot power is based.

28 Mar 2019

Test naming convention

best-practices

How to introduce automated checks that will guarantee that conventions are followed in an example of test naming convention. I’m going to focus on creating automated process that will verify if test names do match conventions. Automation will allow us to forget about the rule because the computer will ensure it’s followed. Test that I’m going to introduce will be living documentation inside the project and ensure no one will miss nor forget about the way we group tests.

14 Mar 2019

Spring internals - BeanPostProcessor

java

Have you ever wondered how spring does things? How field annotated with @Autowired is populated? How asynchronous or scheduled methods are discovered. In this post, I’m going to take a deeper look and scratch a bit on the surface of spring internals. I’ll focus on BeanPostProcessor interface which can be used to achieve interesting things and is used in many various functionalities across spring framework itself.

20 Feb 2019

Deployment with gradle

java

I’ve been working with gradle for some time but I’ve never needed to configure deployment from gradle to maven repository. In this post, I’m going to configure deployment of java based gradle project to the nexus artifact repository. This will include uploading a signed jar itself with javadoc and sources.

6 Feb 2019

Introducing fluentXPath

java

Some time ago I’ve started working on updating automated tests written in selenium with java. After working a bit with it I’ve noticed that from time to time constructing XPath expression can get ugly. We are writing our tests in pure java and "ugliness" usually comes from string concatenation when some extra parameters must be taken into account. I’ve decided to write something that might help a bit with building XPaths without string concatenation.

22 Jan 2019

Multiple teams and monolith

other

At work I’m are engaged in the maintenance and development of a pretty big legacy monolithic application. Some time ago team size basically doubled. To keep things simple and activate more people we decided that we need to split the huge team into smaller more focused parties. Here is how we are working on many features of the same code base in single monolith with multiple teams.

10 Jan 2019

Dependencies BOM

java

Managing and versioning a bunch of connected libraries or services is hard. It doesn’t matter if you are a consumer or a provider of it. In this post, I’m exploring two simple solutions which might come in handy if you develop an ecosystem of libraries/services or when you are a consumer of those. It is all about semantic versioning and import scope of BOM in maven dependencies.

18 Apr 2018

Testing randomness

java

While deep diving into the code I very often see people struggle when testing random changing/things. There is a really simple solution for this and in this blog post, I’m going to show you "one simple trick" that will fix this problem.

20 Mar 2018

NAT instance on AWS

devops

At work and in my private time I’m trying to get myself familiar with AWS cloud. Almost all of this is new for me. I know how to setup few things using AWS web console but infrastructure as a code was calling to me and I wanted to give it a spin. My first task was to create VPC with two pairs of subnets for private stuff and here is why I did it twice.

27 Feb 2018