Modify resource limit from the command line

snf-astakos-app/astakos/im/management/commands/resource-modify.py

+# Copyright 2013 GRNET S.A. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or
+# without modification, are permitted provided that the following
+# conditions are met:
+#
+#   1. Redistributions of source code must retain the above
+#      copyright notice, this list of conditions and the following
+#      disclaimer.
+#
+#   2. Redistributions in binary form must reproduce the above
+#      copyright notice, this list of conditions and the following
+#      disclaimer in the documentation and/or other materials
+#      provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
+# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+# The views and conclusions contained in the software and
+# documentation are those of the authors and should not be
+# interpreted as representing official policies, either expressed
+# or implied, of GRNET S.A.
+
+from optparse import make_option
+from django.core.management.base import BaseCommand, CommandError
+
+from astakos.im.models import Resource
+from astakos.im.resources import update_resource
+
+
+class Command(BaseCommand):
+    args = "<resource name>"
+    help = "Modify a resource (currently only change the default base quota)"
+
+    option_list = BaseCommand.option_list + (
+        make_option('--limit',
+                    dest='limit',
+                    help="Change default base quota"),
+    )
+
+    def handle(self, *args, **options):
+        if len(args) < 1:
+            raise CommandError("Please provide a resource name.")
+
+        resource_name = args[0]
+
+        limit = options['limit']
+        if limit is None:
+            raise CommandError("Use --limit to change default base quota.")
+
+        try:
+            limit = int(limit)
+        except:
+            raise CommandError("Limit should be an integer.")
+
+        try:
+            update_resource(resource_name, limit)
+        except Resource.DoesNotExist:
+            raise CommandError("Resource %s does not exist." % resource_name)

snf-astakos-app/astakos/im/resources.py

@@ -71,3 +71,15 @@ def add_resource(service, resource, uplimit):
             qh_add_resource_limit(name, diff)
     else:
         qh_sync_new_resource(name, uplimit)
+
+
+def update_resource(name, uplimit):
+    r = Resource.objects.get_for_update(name=name)
+    old_uplimit = r.uplimit
+    r.uplimit = uplimit
+    r.save()
+
+    logger.info("Updated resource %s with limit %s." % (name, uplimit))
+    diff = uplimit - old_uplimit
+    if diff != 0:
+        qh_add_resource_limit(name, diff)