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Helioviewer-Project / helioviewer.org

Main web application for solar data visualization
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No helpful information for user when data partition is unavailable on server #251

Open ebuchlin opened 5 years ago

ebuchlin commented 5 years ago

Following a power outage at IAS, a partition containing the AIA JP2 files was not mounted. During that time, http://helioviewer.ias.u-psud.fr/ with an AIA layer just showed a black screen instead of the image, with no indication for the user of what could be wrong. There were items in the Image Timeline, but with "broken link" icons instead of the previews (see screenshot)

screenshot

This is not sufficient for the user to guess that something is broken and that he should contact us to solve the issue.

There should be some kind of explicit information for the user when data files are not available.

wafels commented 3 years ago

Not sure I understand this. The timeline is reporting data, but there are no images to create the thumbnails?

ebuchlin commented 3 years ago

Yes, the data files were not accessible, so there were no images or thumbnails. The timeline is based on the database, which was accessible and containing the correct metadata, so it was reporting data. All this is quite logical; the issue is that in such a case the user is not told why there are no images or thumbnails, while their presence is to be expected.

dgarciabriseno commented 2 years ago

We should update this so that when these API calls return errors errors, we display a message saying a problem on our side has occurred.

dgarciabriseno commented 1 year ago

We should still do this.