add backup labels

Reviewed-on: #4

.env.sample

@@ -28,4 +28,5 @@ LETS_ENCRYPT_ENV=production
 
 SECRET_SECRET_KEY_VERSION=v1
 SECRET_JWT_KEY_VERSION=v1
+SECRET_DB_PASSWORD_VERSION=v1
 

abra.sh

@@ -0,0 +1 @@
+export PG_BACKUP_VERSION=v1

compose.yml

@@ -3,18 +3,26 @@ version: "3.8"
 
 services:
   app:
-    image: baserow/baserow:1.31.1
+    image: baserow/baserow:1.35.3
+    depends_on: 
+      - db
     networks:
       - proxy
+      - internal
     environment:
       - BASEROW_PUBLIC_URL=https://${DOMAIN}
       - SECRET_KEY_FILE=/run/secrets/secret_key
       - BASEROW_JWT_SIGNING_KEY_FILE=/run/secrets/jwt_key
       - BASEROW_CADDY_ADDRESSES=:80 
       - BASEROW_BUILDER_DOMAINS=${WILDCARD_DOMAIN}
+      - DATABASE_HOST=db
+      - DATABASE_NAME=postgres
+      - DATABASE_USER=postgres
+      - DATABASE_PASSWORD_FILE=/run/secrets/db_password
     secrets:
       - secret_key
       - jwt_key
+      - db_password
     deploy:
       restart_policy:
         condition: on-failure
@@ -28,23 +36,54 @@ services:
         #- "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}-redirect"
         #- "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLForceHost=true"
         #- "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
-        - "coop-cloud.${STACK_NAME}.version=1.0.0+1.31.1"
+        - "backupbot.backup=true"
+        - "backupbot.backup.path=/baserow/data"
+        - "coop-cloud.${STACK_NAME}.version=1.2.0+1.35.3"
     healthcheck:
       test: ["CMD", "./baserow.sh", "backend-cmd", "backend-healthcheck"]
       interval: 30s
       timeout: 10s
       retries: 10
       start_period: 1m
-
     volumes:
       - baserow_data:/baserow/data
+  db:
+    image: postgres:15
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
+      - POSTGRES_DB=postgres
+    networks:
+      internal: 
+    deploy:
+      restart_policy:
+        condition: on-failure
+      labels:
+        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
+    secrets:
+      - db_password
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready", "-U", "postgres"]
+      interval: 30s
+      timeout: 10s
+      retries: 10
       
 volumes:
   baserow_data:
+  postgres_data: 
 
 networks:
   proxy:
     external: true
+  internal: 
 
 secrets:
   secret_key:
@@ -53,3 +92,11 @@ secrets:
   jwt_key:
     external: true
     name: ${STACK_NAME}_jwt_key_${SECRET_JWT_KEY_VERSION}
+  db_password:
+    external: true
+    name: ${STACK_NAME}_db_password_${SECRET_DB_PASSWORD_VERSION}
+
+configs:
+  pg_backup:
+    name: ${STACK_NAME}_pg_backup_${PG_BACKUP_VERSION}
+    file: pg_backup.sh

pg_backup.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+BACKUP_FILE='/var/lib/postgresql/data/backup.sql'
+
+function backup {
+  export PGPASSWORD=$(cat /run/secrets/db_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 $BACKUP_FILE
+
+    trap - EXIT INT TERM
+    restore_config
+}
+
+$@