[Unit]
Description=Matrix Homeserver - Database Restore
Documentation=https://matrix-construct.github.io/tuwunel/maintenance.html
After=local-fs.target var-lib-virtiofs-data.mount matrix-tools-build.service
Requires=var-lib-virtiofs-data.mount
Wants=matrix-tools-build.service
Before=matrix-homeserver.service

# Only run if the homeserver has been configured
ConditionPathExists=/etc/quadlets/matrix/tuwunel.env

# Only restore when no RocksDB database exists yet
ConditionPathExists=!/var/lib/quadlets/matrix/tuwunel/db/CURRENT
# And there is at least one backup archive available to restore from
ConditionPathExistsGlob=/var/lib/virtiofs/data/matrix/tuwunel/backup/*.tar.gz

PartOf=matrix.target

[Container]
ContainerName=matrix-restore-job
Image=localhost/matrix-tools:latest

# No need for root privileges
User=10031
Group=10000

# Restore script
Entrypoint=/usr/local/bin/restore.sh
Volume=/etc/quadlets/matrix/restore.sh:/usr/local/bin/restore.sh:z,ro

# Latest backup archive from virtiofs (read-only)
Environment=BACKUP_SOURCE=/backup
Volume=/var/lib/virtiofs/data/matrix/tuwunel/backup:/backup:z,ro

# Database destination
Environment=DB_DEST=/var/lib/tuwunel/db
Volume=/var/lib/quadlets/matrix/tuwunel/db:/var/lib/tuwunel/db:z

[Service]
Restart=no
TimeoutStartSec=infinity
Type=oneshot