2 # Licensed under the Apache License, Version 2.0 (the "License"); you may
3 # not use this file except in compliance with the License. You may obtain
4 # a copy of the License at
6 # http://www.apache.org/licenses/LICENSE-2.0
8 # Unless required by applicable law or agreed to in writing, software
9 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
10 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
11 # License for the specific language governing permissions and limitations
16 from toscaparser.utils.gettextutils import _
17 from translator.common import flavors as nova_flavors
18 from translator.common import images as glance_images
19 import translator.common.utils
20 from translator.hot.syntax.hot_resource import HotResource
23 log = logging.getLogger('heat-translator')
26 # Name used to dynamically load appropriate map class.
27 TARGET_CLASS_NAME = 'ToscaCompute'
30 class ToscaCompute(HotResource):
31 """Translate TOSCA node type tosca.nodes.Compute."""
33 COMPUTE_HOST_PROP = (DISK_SIZE, MEM_SIZE, NUM_CPUS) = \
34 ('disk_size', 'mem_size', 'num_cpus')
36 COMPUTE_OS_PROP = (ARCHITECTURE, DISTRIBUTION, TYPE, VERSION) = \
37 ('architecture', 'distribution', 'type', 'version')
39 IMAGE_OS_PROP = (OS_DISTRO, OS_TYPE, OS_VERSION) = \
40 ('os_distro', 'os_type', 'os_version')
41 toscatype = 'tosca.nodes.Compute'
43 ALLOWED_NOVA_SERVER_PROPS = \
44 ('admin_pass', 'availability_zone', 'block_device_mapping',
45 'block_device_mapping_v2', 'config_drive', 'diskConfig', 'flavor',
46 'flavor_update_policy', 'image', 'image_update_policy', 'key_name',
47 'metadata', 'name', 'networks', 'personality', 'reservation_id',
48 'scheduler_hints', 'security_groups', 'software_config_transport',
49 'user_data', 'user_data_format', 'user_data_update_policy')
51 def __init__(self, nodetemplate, csar_dir=None):
52 super(ToscaCompute, self).__init__(nodetemplate,
53 type='OS::Nova::Server',
55 # List with associated hot port resources with this server
56 self.assoc_port_resources = []
59 def handle_properties(self):
60 self.properties = self.translate_compute_flavor_and_image(
61 self.nodetemplate.get_capability('host'),
62 self.nodetemplate.get_capability('os'))
63 self.properties['user_data_format'] = 'SOFTWARE_CONFIG'
64 self.properties['software_config_transport'] = 'POLL_SERVER_HEAT'
65 tosca_props = self.get_tosca_props()
66 for key, value in tosca_props.items():
67 if key in self.ALLOWED_NOVA_SERVER_PROPS:
68 self.properties[key] = value
70 # To be reorganized later based on new development in Glance and Graffiti
71 def translate_compute_flavor_and_image(self,
80 for prop in host_capability.get_properties_objects():
81 host_cap_props[prop.name] = prop.value
82 # if HOST properties are not specified, we should not attempt to
83 # find best match of flavor
85 flavor = self._best_flavor(host_cap_props)
87 for prop in os_capability.get_properties_objects():
88 os_cap_props[prop.name] = prop.value
89 # if OS properties are not specified, we should not attempt to
90 # find best match of image
92 image = self._best_image(os_cap_props)
93 hot_properties['flavor'] = flavor
95 hot_properties['image'] = image
97 hot_properties.pop('image', None)
100 def _best_flavor(self, properties):
101 log.info(_('Choosing the best flavor for given attributes.'))
102 # Check whether user exported all required environment variables.
103 flavors = nova_flavors.get_flavors()
105 # start with all flavors
106 match_all = flavors.keys()
108 # TODO(anyone): Handle the case where the value contains something like
109 # get_input instead of a value.
110 # flavors that fit the CPU count
111 cpu = properties.get(self.NUM_CPUS)
113 self._log_compute_msg(self.NUM_CPUS, 'flavor')
114 match_cpu = self._match_flavors(match_all, flavors, self.NUM_CPUS, cpu)
116 # flavors that fit the mem size
117 mem = properties.get(self.MEM_SIZE)
119 mem = translator.common.utils.MemoryUnit.convert_unit_size_to_num(
122 self._log_compute_msg(self.MEM_SIZE, 'flavor')
123 match_cpu_mem = self._match_flavors(match_cpu, flavors,
125 # flavors that fit the disk size
126 disk = properties.get(self.DISK_SIZE)
128 disk = translator.common.utils.MemoryUnit.\
129 convert_unit_size_to_num(disk, 'GB')
131 self._log_compute_msg(self.DISK_SIZE, 'flavor')
132 match_cpu_mem_disk = self._match_flavors(match_cpu_mem, flavors,
133 self.DISK_SIZE, disk)
134 # if multiple match, pick the flavor with the least memory
135 # the selection can be based on other heuristic, e.g. pick one with the
136 # least total resource
137 if len(match_cpu_mem_disk) > 1:
138 return self._least_flavor(match_cpu_mem_disk, flavors, 'mem_size')
139 elif len(match_cpu_mem_disk) == 1:
140 return match_cpu_mem_disk[0]
144 def _best_image(self, properties):
145 # Check whether user exported all required environment variables.
146 images = glance_images.get_images()
147 match_all = images.keys()
148 architecture = properties.get(self.ARCHITECTURE)
149 if architecture is None:
150 self._log_compute_msg(self.ARCHITECTURE, 'image')
151 match_arch = self._match_images(match_all, images,
152 [self.ARCHITECTURE], architecture)
154 image_type = properties.get(self.TYPE)
155 if image_type is None:
156 self._log_compute_msg(self.TYPE, 'image')
157 match_type = self._match_images(match_arch, images, [self.TYPE,
161 distribution = properties.get(self.DISTRIBUTION)
162 if distribution is None:
163 self._log_compute_msg(self.DISTRIBUTION, 'image')
164 match_distribution = self._match_images(match_type, images,
168 version = properties.get(self.VERSION)
170 self._log_compute_msg(self.VERSION, 'image')
171 match_version = self._match_images(match_distribution, images,
172 [self.VERSION, self.OS_VERSION],
175 if len(match_version):
176 return list(match_version)[0]
179 def _match_flavors(this_list, this_dict, attr, size):
180 """Return from this list all flavors matching the attribute size."""
182 return list(this_list)
183 matching_flavors = []
184 for flavor in this_list:
185 if isinstance(size, int):
186 if this_dict[flavor][attr] >= size:
187 matching_flavors.append(flavor)
188 log.debug(_('Returning list of flavors matching the attribute size.'))
189 return matching_flavors
192 def _least_flavor(this_list, this_dict, attr):
193 """Return from this list the flavor with the smallest attr."""
194 least_flavor = this_list[0]
195 for flavor in this_list:
196 if this_dict[flavor][attr] < this_dict[least_flavor][attr]:
197 least_flavor = flavor
201 def _match_images(this_list, this_dict, attr_list, prop):
205 for image in this_list:
206 for attr in attr_list:
207 if attr in this_dict[image]:
208 if this_dict[image][attr].lower() == str(prop).lower():
209 matching_images.insert(0, image)
211 matching_images.append(image)
212 return matching_images
214 def get_hot_attribute(self, attribute, args):
216 # Convert from a TOSCA attribute for a nodetemplate to a HOT
217 # attribute for the matching resource. Unless there is additional
218 # runtime support, this should be a one to one mapping.
220 # Note: We treat private and public IP addresses equally, but
221 # this will change in the future when TOSCA starts to support
222 # multiple private/public IP addresses.
223 log.debug(_('Converting TOSCA attribute for a nodetemplate to a HOT \
225 if attribute == 'private_address' or \
226 attribute == 'public_address':
227 attr['get_attr'] = [self.name, 'first_address']
232 def _log_compute_msg(prop, what):
233 msg = _('No value is provided for Compute capability '
234 'property "%(prop)s". This may set an undesired "%(what)s" '
235 'in the template.') % {'prop': prop, 'what': what}