Pieces of base-64 garbled output display in partial views

[dblock]

Partial truncated text.

[ejelly]

Ah, I have a hunch. The state probably needs to be preserved across lines, which means instantiating a new filter on every line is a bad idea (at least that's how I remember it, I'm on my phone right now).

Might be an easy fix. I'm currently in the process of moving, though, so I will try to fix this when things have calmed down.

[ejelly]

Hmm, okay, that turned out not to be the case. The Filter is properly instantiated once.

Looking at your output, the preceding line is <pre class="console-output">, which means the (partial) output starts there. Does the garbage go away when you click on "Full Log"?

[dblock]

Yes, garbage goes away when you are looking at the full log.

[MartinNowak]

Yes, this is simply a side-effect of #67. The base64 encoded data can't be interpreted to sth. sensible when picked up mid-stream (due to not showing the full log).

[tszmytka]

Having spent a fair amount of time with #185 I can say something about this.

This issue has nothing to do with ansicolor directly. Jenkins produces the partial views simply by taking the last x bytes from the log - currently it is 150 KB - without looking if it happens to fall in the middle of an encoded ConsoleNote or not.
Any other plugin or internal Jenkins functionality that uses ConsoleNotes will exhibit the same behavior.

@dblock I think this can be closed as any attempts at fixing this would require manually updating the log file - I actually went in that direction at the beginning of #198

[dblock]

I think this can stay open since it's still an issue. I agree there's nothing sensible AnsiColor can do right now, but maybe someone encountering this problem will have a better idea (e.g. improving how Jenkins reads log tails).

[tszmytka]

@dblock I've fixed this behavior directly in Jenkins some time ago already (as the ticket above shows) and forgot to post an update. Jenkins version 2.261 (or newer) will always render partial logs starting from the beginning of a line - ConsoleNotes (parts of them) will no longer show up in the output no matter what.