fix: Avoid failing to update the current version entry if there is none

[juliusknorr]

Signed-off-by: Julius Härtl jus@bitgrid.net

• Resolves: [Bug]: Files Versions: Did expect one result but found none when executing: query "SELECT * FROM *PREFIX*files_versions WHERE (file_id = :dcValue1) AND (timestamp = :dcValue2)"; #41174

Summary

I managed to reproduce the error by having a file without a versions entry as it would be the case for files from before the upgrade to 25.

Steps to reproduce on latest master:

• Create a new text file
• Let it open but don't type
• Drop the created entry in oc_files_versions to simulate an older file
• Type something and save in the text app

The first attempt to save will not create a version as the size is 0 and

server/apps/files_versions/lib/Storage.php

Lines 227 to 228 in c3475f4

	if ($file->getSize() === 0) {
	return false;

will not write a version in this case. However the logic in the FileEventsListener then would hit the case of the error message where there is no current version stored in the table.

It seemed reasonable to me to just create it in this case.

TODO

• ...

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[artonge]

If this only happen when file size is 0, I think adding a special logic is better than catching exceptions as they can be caused be something else.

I pushed a commit to slightly change your fix. Let me know what you think.

[juliusknorr]

/backport to stable27

[juliusknorr]

/backport to stable26

[juliusknorr]

@artonge Unfortunately your approach doesn't work as it would try to create the version twice when creating and calling putContent, once with the NodeCreatedEvent and once with the NodeWrittenEvent. Did you have any concrete concern regarding my approach of just catching potential not found rows when trying to get the existing version?

[artonge]

I updated the condition, tests seem happy now :)

[backportbot-nextcloud]

The backport to stable27 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable27
git pull origin stable27

# Create the new backport branch
git checkout -b fix/foo-stable27

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable27

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[backportbot-nextcloud]

The backport to stable26 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable26
git pull origin stable26

# Create the new backport branch
git checkout -b fix/foo-stable26

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable26

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[solracsf]

/backport to stable27

[juliusknorr]

/backport to stable26

[AndyXheli]

Hey @juliushaertl Still on issue. Just got this error on Nc 28.0.1

Dose this need to be merged to NC 28 ? please see error below

{"reqId":"FgbBuTFpl2rUhudfNB6o","level":3,"time":"2023-12-21T14:48:25-06:00","remoteAddr":"67.167.236.172","user":"admin","app":"no app in context","method":"PUT","url":"/remote.php/dav/files/admin/InstantUpload/Camera/20231221_080234.jpg","message":"Exception thrown: OCP\\AppFramework\\Db\\DoesNotExistException","userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.26.0","version":"28.0.1.1","exception":{"Exception":"OCP\\AppFramework\\Db\\DoesNotExistException","Message":"Did expect one result but found none when executing: query \"SELECT * FROM `*PREFIX*files_versions` WHERE (`file_id` = :dcValue1) AND (`timestamp` = :dcValue2)\"; ","Code":0,"Trace":[{"file":"/var/www/nextcloud/lib/public/AppFramework/Db/QBMapper.php","line":361,"function":"findOneQuery","class":"OCP\\AppFramework\\Db\\QBMapper","type":"->"},{"file":"/var/www/nextcloud/apps/files_versions/lib/Db/VersionsMapper.php","line":76,"function":"findEntity","class":"OCP\\AppFramework\\Db\\QBMapper","type":"->"},{"file":"/var/www/nextcloud/apps/files_versions/lib/Versions/LegacyVersionsBackend.php","line":253,"function":"findVersionForFileId","class":"OCA\\Files_Versions\\Db\\VersionsMapper","type":"->"},{"file":"/var/www/nextcloud/apps/files_versions/lib/Versions/VersionManager.php","line":152,"function":"updateVersionEntity","class":"OCA\\Files_Versions\\Versions\\LegacyVersionsBackend","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/apps/files_versions/lib/Listener/FileEventsListener.php","line":232,"function":"updateVersionEntity","class":"OCA\\Files_Versions\\Versions\\VersionManager","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/apps/files_versions/lib/Listener/FileEventsListener.php","line":106,"function":"post_write_hook","class":"OCA\\Files_Versions\\Listener\\FileEventsListener","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/ServiceEventListener.php","line":86,"function":"handle","class":"OCA\\Files_Versions\\Listener\\FileEventsListener","type":"->"},{"file":"/var/www/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php","line":230,"function":"__invoke","class":"OC\\EventDispatcher\\ServiceEventListener","type":"->"},{"file":"/var/www/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php","line":59,"function":"callListeners","class":"Symfony\\Component\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/EventDispatcher.php","line":94,"function":"dispatch","class":"Symfony\\Component\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/EventDispatcher.php","line":106,"function":"dispatch","class":"OC\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Files/Node/HookConnector.php","line":109,"function":"dispatchTyped","class":"OC\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/legacy/OC_Hook.php","line":105,"function":"postWrite","class":"OC\\Files\\Node\\HookConnector","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/File.php","line":479,"function":"emit","class":"OC_Hook","type":"::"},{"file":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/File.php","line":404,"function":"emitPostHooks","class":"OCA\\DAV\\Connector\\Sabre\\File","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":1137,"function":"put","class":"OCA\\DAV\\Connector\\Sabre\\File","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php","line":492,"function":"updateFile","class":"Sabre\\DAV\\Server","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"httpPut","class":"Sabre\\DAV\\CorePlugin","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":472,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Server.php","line":370,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/remote.php","line":172,"args":["/var/www/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/var/www/nextcloud/lib/public/AppFramework/Db/QBMapper.php","Line":283,"CustomMessage":"Exception thrown: OCP\\AppFramework\\Db\\DoesNotExistException"},"id":"6584b598e47a0"}

[juliusknorr]

Seems the code has been reworked in cec0b31 again, won't have time to dive into that, but #41174 is tracking this i think

[rchaconmolero]

Same problem in 28.0.6.

[Caveman-Dan]

I'm still having this problem, I have just installed the latest (Nextcloud Hub 9 (30.0.5)).