common/python/rift/mano/tosca_translator/rwmano/tosca/tosca_scaling_group.py

   1 #
   2 # Copyright 2016 RIFT.io Inc
   3 #
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain 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,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15 #
  16
  17
  18 from rift.mano.tosca_translator.common.utils import _
  19 from rift.mano.tosca_translator.common.utils import convert_keys_to_python
  20 from rift.mano.tosca_translator.rwmano.syntax.mano_resource import ManoResource
  21
  22 from toscaparser.common.exception import ValidationError
  23
  24
  25 # Name used to dynamically load appropriate map class.
  26 TARGET_CLASS_NAME = 'ToscaScalingGroup'
  27
  28
  29 class ToscaScalingGroup(ManoResource):
  30     '''Translate TOSCA node type tosca.policies.Scaling.'''
  31
  32     toscatype = 'tosca.policies.riftio.ScalingGroup'
  33
  34     IGNORE_PROPS = []
  35
  36     def __init__(self, log, policy, metadata=None):
  37         # TODO(Philip):Not inheriting for ManoResource, as there is no
  38         # instance from parser
  39         self.log = log
  40         for name, details in policy.items():
  41             self.name = name
  42             self.details = details
  43             break
  44         self.type_ = 'scale-grp'
  45         self.metadata = metadata
  46         self.properties = {}
  47
  48     def __str__(self):
  49         return "%s(%s)" % (self.name, self.type)
  50
  51     def handle_properties(self, nodes, groups):
  52         tosca_props = self.details
  53         self.log.debug(_("{0} with tosca properties: {1}").
  54                        format(self, tosca_props))
  55         self.properties['name'] = tosca_props['name']
  56         self.properties['max-instance-count'] = \
  57                                 tosca_props['max_instance_count']
  58         self.properties['min-instance-count'] = \
  59                                 tosca_props['min_instance_count']
  60         self.properties['vnfd-member'] = []
  61
  62         def _get_node(name):
  63             for node in nodes:
  64                 if node.name == name:
  65                     return node
  66
  67         for member, count in tosca_props['vnfd_members'].items():
  68             node = _get_node(member)
  69             if node:
  70                 memb = {}
  71                 memb['member-vnf-index-ref'] = node.get_member_vnf_index()
  72                 memb['count'] = count
  73                 self.properties['vnfd-member'].append(memb)
  74             else:
  75                 err_msg = _("{0}: Did not find the member node {1} in "
  76                             "resources list"). \
  77                           format(self, member)
  78                 self.log.error(err_msg)
  79                 raise ValidationError(message=err_msg)
  80
  81         def _validate_action(action):
  82             for group in groups:
  83                 if group.validate_primitive(action):
  84                     return True
  85             return False
  86
  87         self.properties['scaling-config-action'] = []
  88         for action, value in tosca_props['config_actions'].items():
  89             conf = {}
  90             if _validate_action(value):
  91                 conf['trigger'] = action
  92                 conf['ns-config-primitive-name-ref'] = value
  93                 self.properties['scaling-config-action'].append(conf)
  94             else:
  95                 err_msg = _("{0}: Did not find the action {1} in "
  96                             "config primitives"). \
  97                           format(self, action)
  98                 self.log.error(err_msg)
  99                 raise ValidationError(message=err_msg)
 100
 101         self.log.debug(_("{0} properties: {1}").format(self, self.properties))
 102
 103     def get_yang_model_gi(self, nsd, vnfds):
 104         props = convert_keys_to_python(self.properties)
 105         try:
 106             nsd.scaling_group_descriptor.add().from_dict(props)
 107         except Exception as e:
 108             err_msg = _("{0} Exception nsd scaling group from dict {1}: {2}"). \
 109                       format(self, props, e)
 110             self.log.error(err_msg)
 111             raise e
 112
 113     def generate_yang_model(self, nsd, vnfds, use_gi=False):
 114         """Generate yang model for the node"""
 115         self.log.debug(_("Generate YANG model for {0}").
 116                        format(self))
 117
 118         for key in ToscaScalingGroup.IGNORE_PROPS:
 119             if key in self.properties:
 120                 self.properties.pop(key)
 121
 122         if use_gi:
 123             return self.get_yang_model_gi(nsd, vnfds)
 124
 125         if 'scaling-group-descriptor' not in nsd:
 126             nsd['scaling-group-descriptor'] = []
 127         scale = {}
 128         for key, value in self.properties.items():
 129             scale[key] = value
 130         nsd['scaling-group-descriptor'].append(scale)