[Bug] Restoring from WebDAV - full reload is triggered each time the Apps list is opened

[leonghui]

Describe the bug A reload is triggered each time the Apps page is opened, even when the previous reload has not finished. This leads to high network and CPU load on the WebDAV server.

To Reproduce Steps to reproduce the behavior:

1. Start monitoring WebDAV server (Nextcloud) logs
2. Go to 'Restore'
3. Click on 'Cloud'
4. Click on 'Apps'
5. Click on the first app (view 'Details')
6. Click on the back button

Expected behavior A new reload should not be started if the previous reload has not finished.

Logs

After step 4, Nextcloud logs show a sequential queries:

172.18.0.3 - user 27/Jul/2024:16:50:05 +0100 "PROPFIND /remote.php" 207
172.18.0.3 -  27/Jul/2024:16:50:05 +0100 "PROPFIND /remote.php" 401
172.18.0.3 - user 27/Jul/2024:16:50:05 +0100 "PROPFIND /remote.php" 207
172.18.0.3 -  27/Jul/2024:16:50:06 +0100 "PROPFIND /remote.php" 401

After step 6, Nextcloud logs now show 2x queries:

172.18.0.3 - user 27/Jul/2024:16:50:19 +0100 "PROPFIND /remote.php" 207
172.18.0.3 - user 27/Jul/2024:16:50:19 +0100 "PROPFIND /remote.php" 207
172.18.0.3 -  27/Jul/2024:16:50:20 +0100 "PROPFIND /remote.php" 401
172.18.0.3 -  27/Jul/2024:16:50:20 +0100 "PROPFIND /remote.php" 401

If steps 5 & 6 are repeated, Nextcloud logs show 3x queries and so on, with high CPU load on the server hosting Nextcloud.

The built-in logs do not reveal much, other than the icon file being downloaded each time the Apps list is opened.

2024-07-27 16:49:50.117    CloudRepository    Downloading...
2024-07-27 16:49:50.121    SHELL_IN      ls -Zd "/data/user/0/com.xayah.databackup.foss/files" | awk 'NF>1{print $1}'
2024-07-27 16:49:50.170    SHELL_OUT     u:object_r:app_data_file:s0:c148,c256,c512,c768
2024-07-27 16:49:50.171    SHELL_CODE    0
2024-07-27 16:49:50.171    SHELL_IN      chcon -hR "u:object_r:app_data_file:s0:c148,c256,c512,c768" "/data/user/0/com.xayah.databackup.foss/files/"
2024-07-27 16:49:50.210    SHELL_CODE    0
2024-07-27 16:49:50.210    SHELL_IN      chown -hR "10148:10148" "/data/user/0/com.xayah.databackup.foss/files/"
2024-07-27 16:49:50.251    SHELL_CODE    0
2024-07-27 16:49:50.252    WebDAVClientImpl    download: https://nextcloud.lan/remote.php/dav/files/user/backup/configs/icon.tar to /data/user/0/com.xayah.databackup.foss/files/DataBackupTmpDir/icon.tar
2024-07-27 16:50:15.847    CloudRepository    Downloading...
2024-07-27 16:50:15.852    SHELL_IN      ls -Zd "/data/user/0/com.xayah.databackup.foss/files" | awk 'NF>1{print $1}'
2024-07-27 16:50:15.896    SHELL_OUT     u:object_r:app_data_file:s0:c148,c256,c512,c768
2024-07-27 16:50:15.897    SHELL_CODE    0
2024-07-27 16:50:15.898    SHELL_IN      chcon -hR "u:object_r:app_data_file:s0:c148,c256,c512,c768" "/data/user/0/com.xayah.databackup.foss/files/"
2024-07-27 16:50:15.938    SHELL_CODE    0
2024-07-27 16:50:15.939    SHELL_IN      chown -hR "10148:10148" "/data/user/0/com.xayah.databackup.foss/files/"
2024-07-27 16:50:15.981    SHELL_CODE    0
2024-07-27 16:50:15.982    WebDAVClientImpl    download: https://nextcloud.lan/remote.php/dav/files/user/backup/configs/icon.tar to /data/user/0/com.xayah.databackup.foss/files/DataBackupTmpDir/icon.tar

Smartphone (please complete the following information):

• Device: Xiaomi K20 Pro
• OS: LineageOS 20
• Version 2.0.3

Additional context Latest Nextcloud Hub 8 (29.0.4) running on Docker with caddy as the reverse proxy Total number of backed up apps: 71 Time taken for a full reload: 3-4 minutes