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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010-2011 OpenStack Foundation
# Copyright 2011 Piston Cloud Computing, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import hashlib
from nova.api.openstack import common
from nova.api.openstack.compute.views import addresses as views_addresses
from nova.api.openstack.compute.views import flavors as views_flavors
from nova.api.openstack.compute.views import images as views_images
from nova.compute import flavors
from nova.openstack.common import log as logging
from nova.openstack.common import timeutils
from nova import utils
LOG = logging.getLogger(__name__)
class ViewBuilder(common.ViewBuilder):
"""Model a server API response as a python dictionary."""
_collection_name = "servers"
_progress_statuses = (
"ACTIVE",
"BUILD",
"REBUILD",
"RESIZE",
"VERIFY_RESIZE",
)
_fault_statuses = (
"ERROR",
)
def __init__(self):
"""Initialize view builder."""
super(ViewBuilder, self).__init__()
self._address_builder = views_addresses.ViewBuilder()
self._flavor_builder = views_flavors.ViewBuilder()
self._image_builder = views_images.ViewBuilder()
def create(self, request, instance):
"""View that should be returned when an instance is created."""
return {
"server": {
"id": instance["uuid"],
"links": self._get_links(request,
instance["uuid"],
self._collection_name),
},
}
def basic(self, request, instance):
"""Generic, non-detailed view of an instance."""
return {
"server": {
"id": instance["uuid"],
"name": instance["display_name"],
"links": self._get_links(request,
instance["uuid"],
self._collection_name),
},
}
def show(self, request, instance):
"""Detailed view of a single instance."""
server = {
"server": {
"id": instance["uuid"],
"name": instance["display_name"],
"status": self._get_vm_state(instance),
"tenant_id": instance.get("project_id") or "",
"user_id": instance.get("user_id") or "",
"metadata": self._get_metadata(instance),
"hostId": self._get_host_id(instance) or "",
"image": self._get_image(request, instance),
"flavor": self._get_flavor(request, instance),
"created": timeutils.isotime(instance["created_at"]),
"updated": timeutils.isotime(instance["updated_at"]),
"addresses": self._get_addresses(request, instance),
"accessIPv4": instance.get("access_ip_v4") or "",
"accessIPv6": instance.get("access_ip_v6") or "",
"links": self._get_links(request,
instance["uuid"],
self._collection_name),
},
}
_inst_fault = self._get_fault(request, instance)
if server["server"]["status"] in self._fault_statuses and _inst_fault:
server['server']['fault'] = _inst_fault
if server["server"]["status"] in self._progress_statuses:
server["server"]["progress"] = instance.get("progress", 0)
return server
def index(self, request, instances):
"""Show a list of servers without many details."""
return self._list_view(self.basic, request, instances)
def detail(self, request, instances):
"""Detailed view of a list of instance."""
return self._list_view(self.show, request, instances)
def _list_view(self, func, request, servers):
"""Provide a view for a list of servers."""
server_list = [func(request, server)["server"] for server in servers]
servers_links = self._get_collection_links(request,
servers,
self._collection_name)
servers_dict = dict(servers=server_list)
if servers_links:
servers_dict["servers_links"] = servers_links
return servers_dict
@staticmethod
def _get_metadata(instance):
return utils.instance_meta(instance)
@staticmethod
def _get_vm_state(instance):
return common.status_from_state(instance.get("vm_state"),
instance.get("task_state"))
@staticmethod
def _get_host_id(instance):
host = instance.get("host")
project = str(instance.get("project_id"))
if host:
sha_hash = hashlib.sha224(project + host) # pylint: disable=E1101
return sha_hash.hexdigest()
def _get_addresses(self, request, instance):
context = request.environ["nova.context"]
networks = common.get_networks_for_instance(context, instance)
return self._address_builder.index(networks)["addresses"]
def _get_image(self, request, instance):
image_ref = instance["image_ref"]
if image_ref:
image_id = str(common.get_id_from_href(image_ref))
bookmark = self._image_builder._get_bookmark_link(request,
image_id,
"images")
return {
"id": image_id,
"links": [{
"rel": "bookmark",
"href": bookmark,
}],
}
else:
return ""
def _get_flavor(self, request, instance):
instance_type = flavors.extract_flavor(instance)
if not instance_type:
LOG.warn(_("Instance has had its instance_type removed "
"from the DB"), instance=instance)
return {}
flavor_id = instance_type["flavorid"]
flavor_bookmark = self._flavor_builder._get_bookmark_link(request,
flavor_id,
"flavors")
return {
"id": str(flavor_id),
"links": [{
"rel": "bookmark",
"href": flavor_bookmark,
}],
}
def _get_fault(self, request, instance):
fault = instance.get("fault", None)
if not fault:
return None
fault_dict = {
"code": fault["code"],
"created": timeutils.isotime(fault["created_at"]),
"message": fault["message"],
}
if fault.get('details', None):
is_admin = False
context = request.environ["nova.context"]
if context:
is_admin = getattr(context, 'is_admin', False)
if is_admin or fault['code'] != 500:
fault_dict['details'] = fault["details"]
return fault_dict
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