[Unit]
Description=PostgreSQL Database Server - Upgrade
Documentation=https://hub.docker.com/r/pgautoupgrade/pgautoupgrade
After=network.target postgresql-set-major.service
Before=postgresql-server.service
Requires=postgresql-set-major.service

# Only start if PostgreSQL has been configured
ConditionPathExists=/etc/quadlets/postgresql/config.env
# and initialized
ConditionPathExists=/var/lib/quadlets/postgresql/.initialized
# and not yet upgraded
ConditionPathExists=!/var/lib/quadlets/postgresql/latest/docker/PG_VERSION

# Start/stop this unit when the target is started/stopped
PartOf=postgresql.target

[Container]
ContainerName=postgresql-upgrade-to-${PG_MAJOR}-job
Image=docker.io/pgautoupgrade/pgautoupgrade:${PG_MAJOR}-alpine

# Network configuration
Network=host

# Those environment variables will be injected by podman into the container
EnvironmentFile=/etc/quadlets/postgresql/config.env

# Use our entrypoint script to upgrade the database
Entrypoint=/usr/local/bin/upgrade.sh

# No need for root privileges
User=postgres
Group=postgres

# UID/GID mapping to map the postgres (70) user inside the container to arbitrary user 10004 / group 10000 on the host
UIDMap=0:1000000:65535
UIDMap=+70:10004:1
GIDMap=0:1000000:65535
GIDMap=+70:10000:1

# Avoid issues with built-in volumes being created by root
PodmanArgs=--image-volume=ignore

# Set PostgreSQL command line arguments
Exec=${POSTGRES_ARGS}

# Volume mounts
Volume=/var/lib/quadlets/postgresql:/var/lib/postgresql:z
Volume=/etc/quadlets/postgresql/upgrade.sh:/usr/local/bin/upgrade.sh:z,ro

[Service]
Restart=no
TimeoutStartSec=600

# These environment variables are sourced to be used by systemd in the Exec* commands
EnvironmentFile=/etc/quadlets/postgresql/config.env

# This container is a job - run once to completion
Type=oneshot

[Install]
WantedBy=postgresql.target