Custom input codec configuration

Elastic Stack Logstash
1

Hi everybody.
I'm working on my very first codec for Logstash pipeline. The code itself works (according to unit tests).
This is the input configuration in LS pipeline:

input {
	jdbc {
		#stuff
		statement => "select * from mytable"
		codec => my_awesome_codec{}
	}
}

I receive this error when starting pipeline:

[2019-08-28T13:04:23,492][FATAL][logstash.runner] The given configuration is invalid. Reason: java.lang.NoSuchMethodException: my.package.MyAwesomeCodec.<init>(co.elastic.logstash.api.Configuration,co.elastic.logstash.api.Context)
[2019-08-28T13:04:23,523][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit

What could be the reason?

2

Run trace on the logstash.runner

3

Please, could you be more detailed? I'm totally new to the ELK stack.
Anyway, I was calling an old version of the plugin, which was missing a constructor with (co.elastic.logstash.api.Configuration,co.elastic.logstash.api.Context). Now I'm calling the right plugin, but the configuration is still invalid. This time the reason is unknown (for me), even adding --log.level trace as a parameter for logstash's executable.

4

You can do it as follows:
curl -XPUT '127.0.0.1:9600/_node/logging?pretty' -H 'Content-Type: application/json' -d'
{
"logger.logstash.runner" : "TRACE"
}
'

note: this setting will not survive logstash restart and must be placed in the logstash.yml

5

Thanks, I'll try.