This Kotlin plugin is based on the Java Output Plugin available here:
https://www.elastic.co/guide/en/logstash/current/java-output-plugin.html
./gradlew build gem
bin/logstash-plugin install --no-verify --local /path/to/logstash-output-kotlin_output_plugin-0.0.1.gem
Default Conf:
bin/logstash -f /path/to/kotlin_output_plugin_default.conf
Custom Conf:
bin/logstash -f /path/to/kotlin_output_plugin_custom.conf