Add backup/restore functionality

abra.sh

@@ -5,3 +5,41 @@ export COMPOSER_LOCAL_CONF_VERSION=v1
 export PHP_INI_VERSION=v1
 
 export SAML_ENTRYPOINT_CONF_VERSION=v1
+
+abra_backup_app() {
+  _abra_backup_dir "app:/var/www/html/images"
+}
+
+abra_backup_db() {
+  _abra_backup_mysql "db" "mediawiki"
+}
+
+abra_backup() {
+  abra_backup_app && abra_backup_db
+}
+
+abra_restore_app() {
+  # shellcheck disable=SC2034
+  {
+	abra__src_="-"
+	abra__dst_="app:/var/www/html/"
+  }
+
+  zcat "$@" | sub_app_cp 
+
+  success "Restored 'app'"
+}
+
+abra_restore_db() {
+  # 3wc: unlike abra_backup_db, we can assume abra__service_ will be 'db' if we
+  # got this far..
+
+  # shellcheck disable=SC2034
+  abra___no_tty="true"
+
+  DB_ROOT_PASSWORD="$(sub_app_run cat /run/secrets/db_root_password)"
+
+  zcat "$@" | sub_app_run mysql -u root -p"$DB_ROOT_PASSWORD" wordpress
+
+  success "Restored 'db'"
+}