Coverage for nova/api/openstack/compute/views/limits.py: 100%

1# Copyright 2010-2011 OpenStack Foundation 

2# All Rights Reserved. 

3# 

4# Licensed under the Apache License, Version 2.0 (the "License"); you may 

5# not use this file except in compliance with the License. You may obtain 

6# a copy of the License at 

7# 

8# http://www.apache.org/licenses/LICENSE-2.0 

9# 

10# Unless required by applicable law or agreed to in writing, software 

11# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 

12# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 

13# License for the specific language governing permissions and limitations 

14# under the License. 

15 

16 

17class ViewBuilder(object): 

18 """OpenStack API base limits view builder.""" 

19 

20 limit_names = {} 

21 

22 def __init__(self): 

23 self.limit_names = { 

24 "ram": ["maxTotalRAMSize"], 

25 "instances": ["maxTotalInstances"], 

26 "cores": ["maxTotalCores"], 

27 "key_pairs": ["maxTotalKeypairs"], 

28 "floating_ips": ["maxTotalFloatingIps"], 

29 "metadata_items": ["maxServerMeta", "maxImageMeta"], 

30 "injected_files": ["maxPersonality"], 

31 "injected_file_content_bytes": ["maxPersonalitySize"], 

32 "security_groups": ["maxSecurityGroups"], 

33 "security_group_rules": ["maxSecurityGroupRules"], 

34 "server_groups": ["maxServerGroups"], 

35 "server_group_members": ["maxServerGroupMembers"] 

36 } 

37 

38 def build(self, request, quotas, filtered_limits=None, 

39 max_image_meta=True): 

40 filtered_limits = filtered_limits or [] 

41 absolute_limits = self._build_absolute_limits( 

42 quotas, filtered_limits, 

43 max_image_meta=max_image_meta) 

44 

45 used_limits = self._build_used_limits( 

46 request, quotas, filtered_limits) 

47 

48 absolute_limits.update(used_limits) 

49 output = { 

50 "limits": { 

51 "rate": [], 

52 "absolute": absolute_limits, 

53 }, 

54 } 

55 

56 return output 

57 

58 def _build_absolute_limits(self, quotas, filtered_limits=None, 

59 max_image_meta=True): 

60 """Builder for absolute limits 

61 

62 absolute_limits should be given as a dict of limits. 

63 For example: {"ram": 512, "gigabytes": 1024}. 

64 

65 filtered_limits is an optional list of limits to exclude from the 

66 result set. 

67 """ 

68 absolute_limits = {k: v['limit'] for k, v in quotas.items()} 

69 limits = {} 

70 for name, value in absolute_limits.items(): 

71 if (name in self.limit_names and 

72 value is not None and name not in filtered_limits): 

73 for limit_name in self.limit_names[name]: 

74 if not max_image_meta and limit_name == "maxImageMeta": 

75 continue 

76 limits[limit_name] = value 

77 return limits 

78 

79 def _build_used_limits(self, request, quotas, filtered_limits): 

80 quota_map = { 

81 'totalRAMUsed': 'ram', 

82 'totalCoresUsed': 'cores', 

83 'totalInstancesUsed': 'instances', 

84 'totalFloatingIpsUsed': 'floating_ips', 

85 'totalSecurityGroupsUsed': 'security_groups', 

86 'totalServerGroupsUsed': 'server_groups', 

87 } 

88 used_limits = {} 

89 for display_name, key in quota_map.items(): 

90 if (key in quotas and key not in filtered_limits): 

91 used_limits[display_name] = quotas[key]['in_use'] 

92 

93 return used_limits