LinkageErrors and Actors

It is not uncommon to have ClassNotFound exceptions thrown when developing applications inside OSGi world. LinkageErrors can be even seen as "normal" exceptions which can have minor effects on how the application works.

Akka actors other hand really don't like linkage errors, more specifically, during message handling. If a linkage error is thrown, it will result to the whole actor system going down. Supervision strategies don't help here either, the linkage errors pass right through.

To combat the problem, there are some options. The most obvious one is to wrap the actors receive method with try-catch clauses. You either do this is in every actor or create a superclass which delegates the receive to a safe method.

Another option is to use compile-time weaved aspects. The actor library can be wrapped and the compiled classes can be then weaved. If using OSGi then the manifest entries need to be set correctly so that the actor classes are exported and for the serialization to work, every class needs to be dynamically importable.

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I'm not a passionate developer

A family friend of mine is an airlane pilot. A dream job for most, right? As a child, I certainly thought so. Now that I can have grown-up talks with him, I have discovered a more accurate description of his profession. He says that the truth about the job is that it is boring. To me, that is not that surprising. Airplanes are cool and all, but when you are in the middle of the Atlantic sitting next to the colleague you have been talking to past five years, how stimulating can that be? When he says the job is boring, it is not a bad kind of boring. It is a very specific boring. The "boring" you would want as a passenger. Uneventful. Yet, he loves his job. According to him, an experienced pilot is most pleased when each and every tiny thing in the flight plan - goes according to plan. Passengers in the cabin of an expert pilot sit in the comfort of not even noticing who is flying. As someone employed in a field where being boring is not exactly in high demand, this sounds pro

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I bought or technically leased a Canyon Precede:ON 7 (2022) electric bike last fall. This post is about my experiences with it after riding for about 2000 km this winter. The season was a bit colder than usual, and we had more snow than in years, so I properly put the bike through its paces. I've been cycling for almost 20 years. I've never owned a car nor used public transport regularly. I pedal all distances below 30km in all seasons. Besides commuting, I've mountain biked and raced BMX, and I still actively ride my road bike during the spring and summer months. I've owned a handful of bikes and kept them until their frames failed. Buying new bikes or gear has not been a major part of my hobby, and frankly, I'm quite sceptical about the benefits of updating bikes or gear frequently. I've never owned an E-bike before, but I've rented one a couple of times. The bike arrived in a hilariously large box. I suppose there's no need to worry about damage durin

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