refactor config_backup code: extract backup logic from view as prepar…

…ation for rockstor#1382

src/rockstor/storageadmin/views/config_backup.py

@@ -184,35 +184,9 @@ def get_queryset(self, *args, **kwargs):
 
     @transaction.atomic
     def post(self, request):
-        models = {'storageadmin':
-                  ['user', 'group', 'sambashare', 'netatalkshare', 'nfsexport',
-                   'nfsexportgroup', 'advancednfsexport', ],
-                  'smart_manager':
-                  ['service', ], }
-        model_list = []
-        for a in models:
-            for m in models[a]:
-                model_list.append('%s.%s' % (a, m))
-        logger.debug('model list = %s' % model_list)
+        logger.debug('backing up config...')
         with self._handle_exception(request):
-            filename = ('backup-%s.json' %
-                        datetime.now().strftime('%Y-%m-%d-%H%M%S'))
-            if (not os.path.isdir(self.cb_dir)):
-                os.mkdir(self.cb_dir)
-            fp = os.path.join(self.cb_dir, filename)
-            with open(fp, 'w') as dfo:
-                call_command('dumpdata', *model_list, stdout=dfo)
-                dfo.write('\n')
-                call_command('dumpdata', database='smart_manager', *model_list,
-                             stdout=dfo)
-            run_command(['/usr/bin/gzip', fp])
-            gz_name = ('%s.gz' % filename)
-            fp = os.path.join(self.cb_dir, gz_name)
-            md5sum = self._md5sum(fp)
-            size = os.stat(fp).st_size
-            cbo = ConfigBackup(filename=gz_name, md5sum=md5sum, size=size)
-            cbo.save()
-            return Response(ConfigBackupSerializer(cbo).data)
+            return Response(backup_config(self.cb_dir, self._md5sum))
 
 
 class ConfigBackupDetailView(ConfigBackupMixin, rfc.GenericView):

src/rockstor/system/config_backup.py

@@ -0,0 +1,55 @@
+"""
+Copyright (c) 2012-2016 RockStor, Inc. <http://rockstor.com>
+This file is part of RockStor.
+
+RockStor is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published
+by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+RockStor is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+
+import os
+from django.core.management import call_command
+from system.osi import run_command
+from storageadmin.models import ConfigBackup
+from storageadmin.serializers import ConfigBackupSerializer
+from datetime import datetime
+import logging
+logger = logging.getLogger(__name__)
+
+def backup_config(cb_dir, _md5sum):
+    models = {'storageadmin':
+                  ['user', 'group', 'sambashare', 'netatalkshare', 'nfsexport',
+                   'nfsexportgroup', 'advancednfsexport', ],
+              'smart_manager':
+                  ['service', ], }
+    model_list = []
+    for a in models:
+        for m in models[a]:
+            model_list.append('%s.%s' % (a, m))
+    logger.debug('model list = %s' % model_list)
+
+    filename = ('backup-%s.json' % datetime.now().strftime('%Y-%m-%d-%H%M%S'))
+    if (not os.path.isdir(cb_dir)):
+        os.mkdir(cb_dir)
+    fp = os.path.join(cb_dir, filename)
+    with open(fp, 'w') as dfo:
+        call_command('dumpdata', *model_list, stdout=dfo)
+        dfo.write('\n')
+        call_command('dumpdata', database='smart_manager', *model_list, stdout=dfo)
+    run_command(['/usr/bin/gzip', fp])
+    gz_name = ('%s.gz' % filename)
+    fp = os.path.join(cb_dir, gz_name)
+    md5sum = _md5sum(fp)
+    size = os.stat(fp).st_size
+    cbo = ConfigBackup(filename=gz_name, md5sum=md5sum, size=size)
+    cbo.save()
+    return ConfigBackupSerializer(cbo).data