metrics: show: debug info on parsing problems #4370
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dvc/exceptions.py
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output might become a bit long with this I guess. I wonder would be the best to just mention that -v is available? Also, considering that -v is still needed to understand what is actually going on, I guess.
In that case we could simplify the logic a bit - boolean flag below would be enough instead of a full dict.
dvc/repo/metrics/show.py
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we should print key here, ideally even full xpath within the file.
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dvc/exceptions.py
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@jorgeorpinel could you please review the message?
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Question: is this error output per bad metrics/plots file? Or only when all of the metrics/plots files are bad?
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How about something like "The metrics/plots file could not be parsed." for now?
Not sure we need the "use -v" part. What other info specific to this problem can the user get that way?
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@jorgeorpinel this error will only be thrown on occasion when there have been metrics found, but none could be parsed, so it should be rather rare. -v will allow user to see debug messages introduced in this change.
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If we keep the message as-is, there's a typo in Could
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dvc/exceptions.py
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Could not parse metrics files. Use -v option to see more details.
cc @jorgeorpinel - let's get this message right
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Hey sorry guys just noticed this mention. I did suggest "The metrics/plots file could not be parsed." before in #4370 (comment) though. I don't think we need to mention -v, that applies to every error message.
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Let's not create a yet another exception type here, since it is really the same error with just a tiny difference. Let's just raise NoMetricsError with an explicit message,
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Let's use a lazy notation, since there might be a lot of metrics present.
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❗ I have followed the Contributing to DVC checklist.
📖 If this PR requires documentation updates, I have created a separate PR (or issue, at least) in dvc.org and linked it here.
Thank you for the contribution - we'll try to review it as soon as possible. 🙏
Fixes #4356