openstack nova server.py文件内容

admin · 发表于 2021-9-2 17:47:14

# 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.
from openstack.compute.v2 import metadata
from openstack import exceptions
from openstack.image.v2 import image
from openstack import resource
from openstack import utils

CONSOLE_TYPE_ACTION_MAPPING = {
'novnc': 'os-getVNCConsole',
'xvpvnc': 'os-getVNCConsole',
'spice-html5': 'os-getSPICEConsole',
'rdp-html5': 'os-getRDPConsole',
'serial': 'os-getSerialConsole'
}

class Server(resource.Resource, metadata.MetadataMixin, resource.TagMixin):
resource_key = 'server'
resources_key = 'servers'
base_path = '/servers'
# capabilities
allow_create = True
allow_fetch = True
allow_commit = True
allow_delete = True
allow_list = True
_query_mapping = resource.QueryParameters(
      "auto_disk_config", "availability_zone",
      "created_at", "description", "flavor",
      "hostname", "image", "kernel_id", "key_name",
      "launch_index", "launched_at", "locked_by", "name",
      "node", "power_state", "progress", "project_id", "ramdisk_id",
      "reservation_id", "root_device_name",
      "status", "task_state", "terminated_at", "user_id",
      "vm_state",
      "sort_key", "sort_dir",
      access_ipv4="access_ip_v4",
      access_ipv6="access_ip_v6",
      has_config_drive="config_drive",
      deleted_only="deleted",
      compute_host="host",
      is_soft_deleted="soft_deleted",
      ipv4_address="ip",
      ipv6_address="ip6",
      changes_since="changes-since",
      changes_before="changes-before",
      id="uuid",
      all_projects="all_tenants",
      **resource.TagMixin._tag_query_parameters
)
_max_microversion = '2.72'
#: A list of dictionaries holding links relevant to this server.
links = resource.Body('links')
access_ipv4 = resource.Body('accessIPv4')
access_ipv6 = resource.Body('accessIPv6')
#: A dictionary of addresses this server can be accessed through.
#: The dictionary contains keys such as ``private`` and ``public``,
#: each containing a list of dictionaries for addresses of that type.
#: The addresses are contained in a dictionary with keys ``addr``
#: and ``version``, which is either 4 or 6 depending on the protocol
#: of the IP address. *Type: dict*
addresses = resource.Body('addresses', type=dict)
#: When a server is first created, it provides the administrator password.
admin_password = resource.Body('adminPass')
#: A list of an attached volumes. Each item in the list contains at least
#: an "id" key to identify the specific volumes.
attached_volumes = resource.Body(
      'os-extended-volumes:volumes_attached')
#: The name of the availability zone this server is a part of.
availability_zone = resource.Body('OS-EXT-AZ:availability_zone')
#: Enables fine grained control of the block device mapping for an
#: instance. This is typically used for booting servers from volumes.
block_device_mapping = resource.Body('block_device_mapping_v2')
#: Indicates whether or not a config drive was used for this server.
config_drive = resource.Body('config_drive')
#: The name of the compute host on which this instance is running.
#: Appears in the response for administrative users only.
compute_host = resource.Body('OS-EXT-SRV-ATTR:host')
#: Timestamp of when the server was created.
created_at = resource.Body('created')
#: The description of the server. Before microversion
#: 2.19 this was set to the server name.
description = resource.Body('description')
#: The disk configuration. Either AUTO or MANUAL.
disk_config = resource.Body('OS-DCF:diskConfig')
#: The flavor reference, as a ID or full URL, for the flavor to use for
#: this server.
flavor_id = resource.Body('flavorRef')
#: The flavor property as returned from server.
# TODO(gtema): replace with flavor.Flavor addressing flavor.original_name
flavor = resource.Body('flavor', type=dict)
#: Indicates whether a configuration drive enables metadata injection.
#: Not all cloud providers enable this feature.
has_config_drive = resource.Body('config_drive')
#: An ID representing the host of this server.
host_id = resource.Body('hostId')
#: The host status.
host_status = resource.Body('host_status')
#: The hostname set on the instance when it is booted.
#: By default, it appears in the response for administrative users only.
hostname = resource.Body('OS-EXT-SRV-ATTR:hostname')
#: The hypervisor host name. Appears in the response for administrative
#: users only.
hypervisor_hostname = resource.Body('OS-EXT-SRV-ATTR:hypervisor_hostname')
#: The image reference, as a ID or full URL, for the image to use for
#: this server.
image_id = resource.Body('imageRef')
#: The image property as returned from server.
image = resource.Body('image', type=image.Image)
#: The instance name. The Compute API generates the instance name from the
#: instance name template. Appears in the response for administrative users
#: only.
instance_name = resource.Body('OS-EXT-SRV-ATTR:instance_name')
# The locked status of the server
is_locked = resource.Body('locked', type=bool)
#: The UUID of the kernel image when using an AMI. Will be null if not.
#: By default, it appears in the response for administrative users only.
kernel_id = resource.Body('OS-EXT-SRV-ATTR:kernel_id')
#: The name of an associated keypair
key_name = resource.Body('key_name')
#: When servers are launched via multiple create, this is the
#: sequence in which the servers were launched. By default, it
#: appears in the response for administrative users only.
launch_index = resource.Body('OS-EXT-SRV-ATTR:launch_index', type=int)
#: The timestamp when the server was launched.
launched_at = resource.Body('OS-SRV-USG:launched_at')
#: The maximum number of servers to create.
max_count = resource.Body('max_count')
#: Metadata stored for this server. *Type: dict*
metadata = resource.Body('metadata', type=dict)
#: The minimum number of servers to create.
min_count = resource.Body('min_count')
#: A networks object. Required parameter when there are multiple
#: networks defined for the tenant. When you do not specify the
#: networks parameter, the server attaches to the only network
#: created for the current tenant.
networks = resource.Body('networks')
#: The power state of this server.
power_state = resource.Body('OS-EXT-STS:power_state')
#: While the server is building, this value represents the percentage
#: of completion. Once it is completed, it will be 100.  *Type: int*
progress = resource.Body('progress', type=int)
#: The ID of the project this server is associated with.
project_id = resource.Body('tenant_id')
#: The UUID of the ramdisk image when using an AMI. Will be null if not.
#: By default, it appears in the response for administrative users only.
ramdisk_id = resource.Body('OS-EXT-SRV-ATTR:ramdisk_id')
#: The reservation id for the server. This is an id that can be
#: useful in tracking groups of servers created with multiple create,
#: that will all have the same reservation_id. By default, it appears
#: in the response for administrative users only.
reservation_id = resource.Body('OS-EXT-SRV-ATTR:reservation_id')
#: The root device name for the instance By default, it appears in the
#: response for administrative users only.
root_device_name = resource.Body('OS-EXT-SRV-ATTR:root_device_name')
#: The dictionary of data to send to the scheduler.
scheduler_hints = resource.Body('OS-SCH-HNT:scheduler_hints', type=dict)
#: A list of applicable security groups. Each group contains keys for
#: description, name, id, and rules.
security_groups = resource.Body('security_groups',
                                 type=list, list_type=dict)
#: The UUIDs of the server groups to which the server belongs.
#: Currently this can contain at most one entry.
server_groups = resource.Body('server_groups', type=list)
#: The state this server is in. Valid values include ``ACTIVE``,
#: ``BUILDING``, ``DELETED``, ``ERROR``, ``HARD_REBOOT``, ``PASSWORD``,
#: ``PAUSED``, ``REBOOT``, ``REBUILD``, ``RESCUED``, ``RESIZED``,
#: ``REVERT_RESIZE``, ``SHUTOFF``, ``SOFT_DELETED``, ``STOPPED``,
#: ``SUSPENDED``, ``UNKNOWN``, or ``VERIFY_RESIZE``.
status = resource.Body('status')
#: The task state of this server.
task_state = resource.Body('OS-EXT-STS:task_state')
#: The timestamp when the server was terminated (if it has been).
terminated_at = resource.Body('OS-SRV-USG:terminated_at')
#: A list of trusted certificate IDs, that were used during image
#: signature verification to verify the signing certificate.
trusted_image_certificates = resource.Body(
      'trusted_image_certificates', type=list)
#: Timestamp of when this server was last updated.
updated_at = resource.Body('updated')
#: Configuration information or scripts to use upon launch.
#: Must be Base64 encoded.
user_data = resource.Body('OS-EXT-SRV-ATTR:user_data')
#: The ID of the owners of this server.
user_id = resource.Body('user_id')
#: The VM state of this server.
vm_state = resource.Body('OS-EXT-STS:vm_state')
def _prepare_request(self, requires_id=True, prepend_key=True,
                     base_path=None, **kwargs):
      request = super(Server, self)._prepare_request(requires_id=requires_id,
                                                   prepend_key=prepend_key,
                                                   base_path=base_path)
      server_body = request.body[self.resource_key]
      # Some names exist without prefix on requests but with a prefix
      # on responses. If we find that we've populated one of these
      # attributes with something and then go to make a request, swap out
      # the name to the bare version.
      # Availability Zones exist with a prefix on response, but not request
      az_key = "OS-EXT-AZ:availability_zone"
      if az_key in server_body:
         server_body["availability_zone"] = server_body.pop(az_key)
      # User Data exists with a prefix on response, but not request
      ud_key = "OS-EXT-SRV-ATTR:user_data"
      if ud_key in server_body:
         server_body["user_data"] = server_body.pop(ud_key)
      # Scheduler hints are sent in a top-level scope, not within the
      # resource_key scope like everything else. If we try to send
      # scheduler_hints, pop them out of the resource_key scope and into
      # their own top-level scope.
      hint_key = "OS-SCH-HNT:scheduler_hints"
      if hint_key in server_body:
         request.body[hint_key] = server_body.pop(hint_key)
      return request
def _action(self, session, body, microversion=None):
      """Preform server actions given the message body."""
      # NOTE: This is using Server.base_path instead of self.base_path
      # as both Server and ServerDetail instances can be acted on, but
      # the URL used is sans any additional /detail/ part.
      url = utils.urljoin(Server.base_path, self.id, 'action')
      headers = {'Accept': ''}
      response = session.post(
         url, json=body, headers=headers, microversion=microversion)
      exceptions.raise_from_response(response)
      return response
def change_password(self, session, new_password):
      """Change the administrator password to the given password."""
      body = {'changePassword': {'adminPass': new_password}}
      self._action(session, body)
def get_password(self, session):
      """Get the encrypted administrator password."""
      url = utils.urljoin(Server.base_path, self.id, 'os-server-password')
      response = session.get(url)
      exceptions.raise_from_response(response)
      data = response.json()
      return data.get('password')
def reboot(self, session, reboot_type):
      """Reboot server where reboot_type might be 'SOFT' or 'HARD'."""
      body = {'reboot': {'type': reboot_type}}
      self._action(session, body)
def force_delete(self, session):
      """Force delete a server."""
      body = {'forceDelete': None}
      self._action(session, body)
def rebuild(self, session, name=None, admin_password=None,
            preserve_ephemeral=False, image=None,
            access_ipv4=None, access_ipv6=None,
            metadata=None, user_data=None):
      """Rebuild the server with the given arguments."""
      action = {
         'preserve_ephemeral': preserve_ephemeral
      }
      if image is not None:
         action['imageRef'] = resource.Resource._get_id(image)
      if name is not None:
         action['name'] = name
      if admin_password is not None:
         action['adminPass'] = admin_password
      if access_ipv4 is not None:
         action['accessIPv4'] = access_ipv4
      if access_ipv6 is not None:
         action['accessIPv6'] = access_ipv6
      if metadata is not None:
         action['metadata'] = metadata
      if user_data is not None:
         action['user_data'] = user_data
      body = {'rebuild': action}
      response = self._action(session, body)
      self._translate_response(response)
      return self
def resize(self, session, flavor):
      """Resize server to flavor reference."""
      body = {'resize': {'flavorRef': flavor}}
      self._action(session, body)
def confirm_resize(self, session):
      """Confirm the resize of the server."""
      body = {'confirmResize': None}
      self._action(session, body)
def revert_resize(self, session):
      """Revert the resize of the server."""
      body = {'revertResize': None}
      self._action(session, body)
def create_image(self, session, name, metadata=None):
      """Create image from server."""
      action = {'name': name}
      if metadata is not None:
         action['metadata'] = metadata
      body = {'createImage': action}
      # You won't believe it - wait, who am I kidding - of course you will!
      # Nova returns the URL of the image created in the Location
      # header of the response. (what?) But, even better, the URL it responds
      # with has a very good chance of being wrong (it is built from
      # nova.conf values that point to internal API servers in any cloud
      # large enough to have both public and internal endpoints.
      # However, nobody has ever noticed this because novaclient doesn't
      # actually use that URL - it extracts the id from the end of
      # the url, then returns the id. This leads us to question:
      # a) why Nova is going to return a value in a header
      # b) why it's going to return data that probably broken
      # c) indeed the very nature of the fabric of reality
      # Although it fills us with existential dread, we have no choice but
      # to follow suit like a lemming being forced over a cliff by evil
      # producers from Disney.
      microversion = None
      if utils.supports_microversion(session, '2.45'):
         microversion = '2.45'
      response = self._action(session, body, microversion)
      body = None
      try:
         # There might be body, might be not
         body = response.json()
      except Exception:
         pass
      if body and 'image_id' in body:
         image_id = body['image_id']
      else:
         image_id = response.headers['Location'].rsplit('/', 1)[1]
      return image_id
def add_security_group(self, session, security_group_name):
      body = {"addSecurityGroup": {"name": security_group_name}}
      self._action(session, body)
def remove_security_group(self, session, security_group_name):
      body = {"removeSecurityGroup": {"name": security_group_name}}
      self._action(session, body)
def reset_state(self, session, state):
      body = {"os-resetState": {"state": state}}
      self._action(session, body)
def add_fixed_ip(self, session, network_id):
      body = {"addFixedIp": {"networkId": network_id}}
      self._action(session, body)
def remove_fixed_ip(self, session, address):
      body = {"removeFixedIp": {"address": address}}
      self._action(session, body)
def add_floating_ip(self, session, address, fixed_address=None):
      body = {"addFloatingIp": {"address": address}}
      if fixed_address is not None:
         body['addFloatingIp']['fixed_address'] = fixed_address
      self._action(session, body)
def remove_floating_ip(self, session, address):
      body = {"removeFloatingIp": {"address": address}}
      self._action(session, body)
def backup(self, session, name, backup_type, rotation):
      body = {
         "createBackup": {
            "name": name,
            "backup_type": backup_type,
            "rotation": rotation
         }
      }
      self._action(session, body)
def pause(self, session):
      body = {"pause": None}
      self._action(session, body)
def unpause(self, session):
      body = {"unpause": None}
      self._action(session, body)
def suspend(self, session):
      body = {"suspend": None}
      self._action(session, body)
def resume(self, session):
      body = {"resume": None}
      self._action(session, body)
def lock(self, session):
      body = {"lock": None}
      self._action(session, body)
def unlock(self, session):
      body = {"unlock": None}
      self._action(session, body)
def rescue(self, session, admin_pass=None, image_ref=None):
      body = {"rescue": {}}
      if admin_pass is not None:
         body["rescue"]["adminPass"] = admin_pass
      if image_ref is not None:
         body["rescue"]["rescue_image_ref"] = image_ref
      self._action(session, body)
def unrescue(self, session):
      body = {"unrescue": None}
      self._action(session, body)
def evacuate(self, session, host=None, admin_pass=None, force=None):
      body = {"evacuate": {}}
      if host is not None:
         body["evacuate"]["host"] = host
      if admin_pass is not None:
         body["evacuate"]["adminPass"] = admin_pass
      if force is not None:
         body["evacuate"]["force"] = force
      self._action(session, body)
def start(self, session):
      body = {"os-start": None}
      self._action(session, body)
def stop(self, session):
      body = {"os-stop": None}
      self._action(session, body)
def shelve(self, session):
      body = {"shelve": None}
      self._action(session, body)
def unshelve(self, session, availability_zone=None):
      body = {"unshelve": None}
      if availability_zone:
         body["unshelve"] = {"availability_zone": availability_zone}
      self._action(session, body)
def migrate(self, session):
      body = {"migrate": None}
      self._action(session, body)
def get_console_output(self, session, length=None):
      body = {"os-getConsoleOutput": {}}
      if length is not None:
         body["os-getConsoleOutput"]["length"] = length
      resp = self._action(session, body)
      return resp.json()
def live_migrate(self, session, host, force, block_migration,
                  disk_over_commit=False):
      if utils.supports_microversion(session, '2.30'):
         return self._live_migrate_30(
            session, host,
            force=force,
            block_migration=block_migration)
      elif utils.supports_microversion(session, '2.25'):
         return self._live_migrate_25(
            session, host,
            force=force,
            block_migration=block_migration)
      else:
         return self._live_migrate(
            session, host,
            force=force,
            block_migration=block_migration,
            disk_over_commit=disk_over_commit)
def get_console_url(self, session, console_type):
      action = CONSOLE_TYPE_ACTION_MAPPING.get(console_type)
      if not action:
         raise ValueError("Unsupported console type %s" % console_type)
      body = {action: {'type': console_type}}
      resp = self._action(session, body)
      return resp.json().get('console')
def _live_migrate_30(self, session, host, force, block_migration):
      microversion = '2.30'
      body = {'host': None}
      if block_migration is None:
         block_migration = 'auto'
      body['block_migration'] = block_migration
      if host:
         body['host'] = host
         if force:
            body['force'] = force
      self._action(
         session, {'os-migrateLive': body}, microversion=microversion)
def _live_migrate_25(self, session, host, force, block_migration):
      microversion = '2.25'
      body = {'host': None}
      if block_migration is None:
         block_migration = 'auto'
      body['block_migration'] = block_migration
      if host:
         body['host'] = host
         if not force:
            raise ValueError(
                  "Live migration on this cloud implies 'force'"
                  " if the 'host' option has been given and it is not"
                  " possible to disable. It is recommended to not use 'host'"
                  " at all on this cloud as it is inherently unsafe, but if"
                  " it is unavoidable, please supply 'force=True' so that it"
                  " is clear you understand the risks.")
      self._action(
         session, {'os-migrateLive': body}, microversion=microversion)
def _live_migrate(self, session, host, force, block_migration,
                  disk_over_commit):
      microversion = None
      body = {
         'host': None,
      }
      if block_migration == 'auto':
         raise ValueError(
            "Live migration on this cloud does not support 'auto' as"
            " a parameter to block_migration, but only True and False.")
      body['block_migration'] = block_migration or False
      body['disk_over_commit'] = disk_over_commit or False
      if host:
         body['host'] = host
         if not force:
            raise ValueError(
                  "Live migration on this cloud implies 'force'"
                  " if the 'host' option has been given and it is not"
                  " possible to disable. It is recommended to not use 'host'"
                  " at all on this cloud as it is inherently unsafe, but if"
                  " it is unavoidable, please supply 'force=True' so that it"
                  " is clear you understand the risks.")
      self._action(
         session, {'os-migrateLive': body}, microversion=microversion)
def fetch_security_groups(self, session):
      """Fetch security groups of a server.
      :returns: Updated Server instance.
      """
      url = utils.urljoin(Server.base_path, self.id, 'os-security-groups')
      response = session.get(url)
      exceptions.raise_from_response(response)
      try:
         data = response.json()
         if 'security_groups' in data:
            self.security_groups = data['security_groups']
      except ValueError:
         pass
      return self

ServerDetail = Server

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