Extending Logstash
One of the awesome things about Logstash is that there are so many ways to get log events into it, manipulate and filter events once they are in and then push them out to a whole variety of destinations. Indeed, at the time of writing, there were nearly 100 separate input, filter and output plugins. Every now and again though you encounter a scenario where you need a new plugin or want to customize a plugin to better suit your environment.
Tip The best place to start looking at the anatomy of Logstash plugins are the plugins themselves. You'll find examples of inputs, filters and outputs for most purposes in the Logstash source code repository.
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