Add backup-bot-two labels

TODO.md

@@ -7,7 +7,7 @@
 - [x] External OIDC server (+ move options to `.env.sample`)
 - [x] Customisable Django `DJANGO_SECRET_KEY` and `DJANGO_SUPERUSER_PASSWORD`
 - [ ] Versioned recipe release
-- [ ] `backup-bot-two` labels
+- [x] `backup-bot-two` labels
 - [ ] Fix Django admin static files
 
 ## Should

abra.sh

@@ -1,6 +1,7 @@
 # Set any config versions here
 # Docs: https://docs.coopcloud.tech/maintainers/handbook/#manage-configs
 export NGINX_CONF_VERSION=v2
+export PG_BACKUP_VERSION=v3
 
 # environment() {
 #   # TODO: Add file_env here

compose.yml

@@ -141,6 +141,16 @@ services:
       PGDATA: var/lib/postgresql/data/pgdata
     volumes:
       - postgres:/var/lib/postgresql/data/pgdata
+    deploy:
+      labels:
+        backupbot.backup: "${ENABLE_BACKUPS:-true}"
+        backupbot.backup.pre-hook: "/pg_backup.sh backup"
+        backupbot.backup.volumes.postgres.path: "backup.sql"
+        backupbot.restore.post-hook: '/pg_backup.sh restore'
+    configs:
+        - source: pg_backup
+          target: /pg_backup.sh
+          mode: 0555
 
   redis:
     image: redis:5
@@ -179,6 +189,9 @@ services:
     command: minio server /data
     volumes:
       - minio:/data
+    deploy:
+      labels:
+        backupbot.backup: "${ENABLE_BACKUPS:-true}"
 
   web:
     image: nginx:1.27
@@ -211,3 +224,6 @@ configs:
   nginx_conf:
     name: ${STACK_NAME}_nginx_conf_${NGINX_CONF_VERSION}
     file: nginx.conf
+  pg_backup:
+    name: ${STACK_NAME}_pg_backup_${PG_BACKUP_VERSION}
+    file: pg_backup.sh

pg_backup.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+set -e
+
+BACKUP_FILE='/var/lib/postgresql/data/pgdata/backup.sql'
+
+function backup {
+  # export PGPASSWORD=$(cat $POSTGRES_PASSWORD_FILE)
+  export PGPASSWORD="$POSTGRES_PASSWORD"
+  pg_dump -U ${POSTGRES_USER} ${POSTGRES_DB} > $BACKUP_FILE
+}
+
+function restore {
+    cd /var/lib/postgresql/data/
+    restore_config(){
+        # Restore allowed connections
+        cat pg_hba.conf.bak > pg_hba.conf
+        su postgres -c 'pg_ctl reload'
+    }
+    # Don't allow any other connections than local
+    cp pg_hba.conf pg_hba.conf.bak
+    echo "local all all trust" > pg_hba.conf
+    su postgres -c 'pg_ctl reload'
+    trap restore_config EXIT INT TERM
+
+    # Recreate Database
+    psql -U ${POSTGRES_USER} -d postgres -c "DROP DATABASE ${POSTGRES_DB} WITH (FORCE);" 
+    createdb -U ${POSTGRES_USER} ${POSTGRES_DB}
+    psql -U ${POSTGRES_USER} -d ${POSTGRES_DB} -1 -f $BACKUP_FILE
+
+    trap - EXIT INT TERM
+    restore_config
+}
+
+$@