NPE when header value is null

[cadu-goncalves]

Found an issue on class org.kafkahq.models.Record, if an header has value null a NPE occurs on line 40:

    this.headers.put(header.key(), new String(header.value()));

Suggestion:

        for (Header header: record.headers()) {
            if(Objects.isNull(header.value())) {
                this.headers.put(header.key(), "");
            } else {
                this.headers.put(header.key(), new String(header.value()));
            }
        }

[tchiotludo]

I've decided to handled null value on the whole application and displayed a true null
Thanks for the report !

[cadu-goncalves]

OK, I've built an image based on dev branch, works pretty well. I've just used the Dockerfile from master branch in order to get a runnable image.
Thank you!

[tchiotludo]

Glad to know it !
FYI, normally docker image dev is available : https://hub.docker.com/r/tchiotludo/kafkahq/tags
But I've a test that failed on dev image preventing the build to be done ⌛

[lostiniceland]

@tchiotludo
We just moved from KafkaHQ to AKHQ and in the current version the UI filters out any header with a null value.
This is bad for analysis since we just had the case where a null header was wronly published which caused an Exception in the application. Luckily we still had the old version running where I was able to find the problematic key.
Should I open a new issue for this? Maybe have a config option what should be filtered and what not.

[tchiotludo]

@lostiniceland can you provide a screenshot please ?
I don't understand exactly the issue

[lostiniceland]

KafkaHQ 0.11 (skipped after the important header)

AKHA 0.21

Both views show the same message (highlighted by uuid). Offset is 18.
While KafkaHq shows 19 headers including the one with null AKHQ 0.21 only shows 18 headers.

[tchiotludo]

@lostiniceland : please create a new issue please