Error on image attachments

[Yat Tim]

Hello

When files are uploaded to image attachment fields, image will be distorted. It will also generate a broken PDF. image upload works fine for a while when server is restarted. What could be the potential cause ? 

Thank you

Tim 

[Alessandro Vernet]

Hi Tim,

Can you reproduce this on the Orbeon Forms demo instance (see link below)? If so, could you share a link to the form where I can see the issue?

https://demo.orbeon.com/demo/fr/

-Alex

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[Yat Tim]

Alex 

I have made a few attempts however I couldnt reproduce the issue on demo site. On my local server, it seems that I am able to upload the image properly for anything within 100KB. Orbeon log shows that document cache is within limit tho. 

 "source": "xforms", "message": "after cacheOrStore", "document cache current size": "10", "document cache max size": "50"}

Tim

[Alessandro Vernet]

Hi Tim,

Thank you for checking the demo server (it would certainly have been easier if we could reproduce the problem there). When you upload the image, does it appear corrupted immediately, or only after saving the data and reloading the form? Which database are you using for persistence, the built-in SQLite or an external relational database? Could you also check whether the attachment is corrupted in the database (see the table `orbeon_form_data_attach`)?

-Alex

[Yat Tim]

Alex

Images are corrupted immediately. It is an external database. Attachments are also corrupted in database.

Tim

[Alessandro Vernet]

Hi Tim,

Got it. If the images are corrupted right away, even before saving, then this isn't a persistence issue. Do you see the same behavior in different browsers, such as Firefox and Chrome? Which version of Orbeon Forms are you running, and on which servlet container (Tomcat, WildFly, etc.)?  Is this happening only with a specific form or with any form to which you add an image attachment?

-Alex

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[Yat Tim]

Alex

It is 2023.1.3.202406131619 thru tomcat. All forms adding image attachment are having this issue. 

Tim

[Alessandro Vernet]

Hi Tim,

So this is with a fairly recent version of Orbeon Forms. Are you seeing this in both Chrome and Firefox? If you're using an older JVM, could you try a more recent one, like Java 17 or 21?

-Alex

[Yat Tim]

Hi Alex

I am able to reproduce issue from multiple workstations, Chrome, Firefox and Edge. Server JVM build is 21.0.7

Tim

[Alessandro Vernet]

Hi Tim,

Thank you for testing this with different browsers. I believe we can eliminate the possibility of this issue being browser-related. Since Java 21.0.7 is the latest release of Java 21, you're covered on that front as well.

Could you try saving the corrupted image as shown in the browser and comparing it to the file you uploaded? Do you notice any specific differences? Is the file size smaller? Is it the same until a certain point, after which it might be truncated?

-Alex

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[Yat Tim]

Alex

Everything seems to be identical except the broken part. see one of the attached sample.

Tim

[Alessandro Vernet]

Hi Tim,

The file sizes do appear to match. It's possible that in the corrupted version, the file ends with zeros for some reason. Unfortunately, I don't see a way to investigate further, as I can't reproduce the problem.

Could you try running Orbeon Forms with Docker to see if the issue occurs there as well? It should be fairly straightforward, even if you're not very familiar with Docker (see point 2 on the page linked below).

https://www.orbeon.com/try

-Alex

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