update backupbot labels

.env.sample

@@ -2,6 +2,7 @@ TYPE=onlyoffice
 TIMEOUT=300
 ENABLE_AUTO_UPDATE=true
 LETS_ENCRYPT_ENV=production
+ENABLE_BACKUPS=true
 DOMAIN=onlyoffice.example.com
 
 SECRET_DB_PASSWORD_VERSION=v1

abra.sh

@@ -1,4 +1,5 @@
 export ENTRYPOINT_VERSION=v1
+export PG_BACKUP_VERSION=v1
 
 prepare_shutdown () {
   documentserver-prepare4shutdown.sh    

compose.yml

@@ -64,9 +64,10 @@ services:
     image: postgres:9.5
     deploy:
         labels:
-          backupbot.backup: "true"
-          backupbot.backup.pre-hook: "PGPASSWORD=$$(cat /run/secrets/db_password) pg_dump -U $${POSTGRES_USER} $${POSTGRES_DB} > /var/lib/postgresql/data/backup.sql"
-          backupbot.backup.post-hook: "rm -rf /var/lib/postgresql/data/backup.sql"
+          backupbot.backup: "${ENABLE_BACKUPS:-true}"
+          backupbot.backup.pre-hook: "/pg_backup.sh backup"
+          backupbot.backup.volumes.db.path: "backup.sql"
+          backupbot.restore.post-hook: '/pg_backup.sh restore'
     environment:
       POSTGRES_DB: onlyoffice
       POSTGRES_USER: onlyoffice
@@ -83,6 +84,10 @@ services:
       timeout: 10s
       retries: 10
       start_period: 1m
+    configs:
+        - source: pg_backup
+          target: /pg_backup.sh
+          mode: 0555
 
 volumes:
   db:
@@ -104,3 +109,6 @@ configs:
     name: ${STACK_NAME}_entrypoint_${ENTRYPOINT_VERSION}
     file: entrypoint.sh.tmpl
     template_driver: golang
+  pg_backup:
+    name: ${STACK_NAME}_pg_backup_${PG_BACKUP_VERSION}
+    file: pg_backup.sh

pg_backup.sh

@@ -0,0 +1,27 @@
+#!/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/
+    # 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'
+    # 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 $BACKUP_FILE
+    # Restore allowed connections
+    cat pg_hba.conf.bak > pg_hba.conf
+    su postgres -c 'pg_ctl reload'
+}
+
+$@