Wanting to change the way logging information is logged I looked for the slf4j encoder pattern documentation. Why is it so hard to find? It turns out it was not the slf4j documentation I was looking for, but the logback documentation. Duh!
Anyway, it can be found here.
When adding to a Akka project I got the following error java.lang.ClassNotFoundException: akka.event.slf4j.Slf4jLogger. I double checked my configuration and the Akka documentation. The documentation says the following:
Akka provides a logger for SL4FJ. This module is available in the ‘akka-slf4j.jar’. It has one single dependency; the slf4j-api jar. In runtime you also need a SLF4J backend, we recommend Logback.
No success. Continue reading
With SBT it is possible to download sources and javadocs of libraries. It is really straight forward, just add withSources() and withJavadoc() to the dependency. Continue reading
Feeling a little frustrated as I just spent a considerable amount of time figuring out how to retrieve an item by index from a Seq. Finally figured it out. It can be done using the lift method. This method is also supported by other collections. Continue reading
I have an actor setup where I have two consecutive routers. The first router is the parent of the second router. I wanted to move the configuration of these routers to the configuration file. Setting up the first router was not hard. The second one was a little tricker as the parent is different for each router. Continue reading
Akka makes use of HACON (Human-Optimized Config Object Notation) for configuration. Today I needed to check the config that was loaded. When printing the config to the terminal it is displayed in a compact format. I wanted to pretty print it so it was easier to read. I found a briljant blog post by marcinkubala.
I adapted a code snippet as follows: Continue reading
Today I deleted a tag in Eclipse using EGit that was already pushed to the origin. I then discovered that once the tag is deleted in the local repository there is no way in EGit to delete it from the origin. I am using Github as remote repository. So I checked if the tag could be deleted there. Unfortunately I could not find a delete option there. Bummer what now? Command line git to the rescue. Continue reading
This is a collection of Eclipse shortcuts I use often:
Today I wanted to add one of my Github repositories to a sbt project. I was working on my Windows laptop. I setup the following Build.scala file and placed it in the project directory under the root directory of my sbt project: Continue reading
I was writing functionality to merge download chunks yesterday. This functionality takes a file that is downloaded in chunks and mergers these chunks back into a single file. Writing the test class I did not want my test to depend on downloading a file in chunks, so I needed a way to quickly generate a number of chunks that could be merged. Under Linux the dd command is available that generates a file of a given size that contains random contents. I wrote a small helper class that does exactly this, with the extra twist that it splits the file into a number of chunks. Continue reading