Logstash Plugin Development part 1: Getting Started

In this series of videos I'm going to create a couple of Logstash plugins for some real-world exciting use-cases. This will be a four-part series:

[This is my first ever video on YouTube; constructive criticism welcome.]

1) [this video] Describe the value that I'm wanting to unlock through these plugins, and the typical difficulties with Logstash that I want to streamline, making it easier to get started.
2) Make it really easy to get started, radically streamlining the tooling.
3) Create a new Ruby-based plugin for summarising a FQDN using the public_suffix and idna Ruby modules; including unit-testing and performance-testing.
4) Create a new pure-Java-based for getting data out of a custom MaxMind DataBase (MMDB) so we can do cool things like aggregate logs by an IP's subnet (or VLAN, campus, type of device, etc. etc.). This will also include various tips, gotchas, unit-testing, as well as performance testing.

5) [potential] I've had feedback that my work is very useful potentially for CI/CD tooling, so I'll have to look into that. Please comment if you'd like a video on that (this is something on my radar to learn)

Links:
* Logstash documentation: https://www.elastic.co/guide/en/logstash/current/index.html
* Public Suffix: https://publicsuffix.org/
* Announcement about pure Java API: https://www.elastic.co/blog/previewing-native-support-for-java-plugins-in-logstash
* The Docker image we'll be using to streamline the tooling: https://hub.docker.com/r/cameronkerrnz/logstash-plugin-dev
* The Ruby plugin I'll be demonstrating: https://github.com/cameronkerrnz/logstash-filter-dnssummary
* The Java plugin I'll be demonstrating: https://github.com/cameronkerrnz/logstash-filter-mmdb
* The tooling for creating your own custom MMDB file: https://github.com/cameronkerrnz/json-to-mmdb