Early request in previewing a file gives 500 server error for old and new webdav

[SagarGi]

Description

When previewing (downloading) the file with the old and new webdav after a file is uploaded. Some times the the uploaded files is not ready yet to get it. At that time the server should respond with a status code of 425 not 500.

Steps to reproduce as an admin user

1. Start ocis with env POSTPROCESSING_DELAY so as to reproduce this issue

OCIS_INSECURE=true \
PROXY_ENABLE_BASIC_AUTH=true \
POSTPROCESSING_DELAY=20s \
ocis/bin/ocis server

2. upload file named textfile.txt

curl -X PUT -vk -u admin:admin -d "hello" https://localhost:9200/dav/files/admin/textfile.txt

3. Using old or new webdav make a request to preview the uploaded file

curl -k -X GET 'https://localhost:9200/remote.php/dav/files/admin/textfile.txt?x=32&y=32&forceIcon=0&preview=1' -uadmin:admin -v

Expeted Behaviour

The expected behaviour should have been the status code 425.

Actual Behaviour

The server is giving 500 status code as Internal Server Error

> GET /remote.php/dav/files/admin/textfile.txt?x=32&y=32&forceIcon=0&preview=1 HTTP/1.1
> Host: localhost:9200
> Authorization: Basic YWRtaW46YWRtaW4=
> User-Agent: curl/7.81.0
> Accept: */*
> 
* TLSv1.2 (IN), TLS header, Supplemental data (23):
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* TLSv1.2 (IN), TLS header, Supplemental data (23):
* Mark bundle as not supporting multiuse
< HTTP/1.1 500 Internal Server Error
< Content-Length: 306
< Content-Type: application/xml; charset=utf-8
< Date: Mon, 16 Oct 2023 09:20:05 GMT
< X-Request-Id: desktop/UM1bosUj1W-000461
< 
<?xml version="1.0" encoding="UTF-8"?>
* Connection #0 to host localhost left intact
<d:error xmlns:d="DAV" xmlns:s="http://sabredav.org/ns"><s:exception></s:exception><s:message>{&#34;id&#34;:&#34;com.owncloud.api.thumbnails&#34;,&#34;code&#34;:425,&#34;detail&#34;:&#34;File Processing&#34;,&#34;status&#34;:&#34;Too Early&#34;}</s:message></d:error>

Note
With spaces webdav the server gives 425 status when the for early request to preview the downloaded content.

Environment

Ocis (build with commit de4529d) locally

[SagarGi]

Server log as:

{"level":"error","service":"webdav","error":"{\"id\":\"com.owncloud.api.thumbnails\",\"code\":425,\"detail\":\"FileProcessing\",\"status\":\"Too Early\"}","time":"2023-10-16T12:49:39+05:45","message":"could not get thumbnail"}

[micbar]

I agree with the qualification.

The API should return 425