705 lines
28 KiB
Python
705 lines
28 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo.config import cfg
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cfg.CONF.import_opt('instance_user', 'heat.common.config')
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from heat.common import exception
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from heat.engine import clients
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from heat.engine import scheduler
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from heat.engine.resources import nova_utils
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from heat.engine import constraints
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from heat.engine import properties
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from heat.engine import resource
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from heat.openstack.common.gettextutils import _
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from heat.openstack.common import log as logging
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from heat.openstack.common import uuidutils
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logger = logging.getLogger(__name__)
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class Server(resource.Resource):
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PROPERTIES = (
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NAME, IMAGE, BLOCK_DEVICE_MAPPING, FLAVOR,
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FLAVOR_UPDATE_POLICY, IMAGE_UPDATE_POLICY, KEY_NAME,
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ADMIN_USER, AVAILABILITY_ZONE, SECURITY_GROUPS, NETWORKS,
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SCHEDULER_HINTS, METADATA, USER_DATA_FORMAT, USER_DATA,
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RESERVATION_ID, CONFIG_DRIVE, DISK_CONFIG, PERSONALITY,
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) = (
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'name', 'image', 'block_device_mapping', 'flavor',
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'flavor_update_policy', 'image_update_policy', 'key_name',
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'admin_user', 'availability_zone', 'security_groups', 'networks',
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'scheduler_hints', 'metadata', 'user_data_format', 'user_data',
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'reservation_id', 'config_drive', 'diskConfig', 'personality',
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)
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_BLOCK_DEVICE_MAPPING_KEYS = (
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BLOCK_DEVICE_MAPPING_DEVICE_NAME, BLOCK_DEVICE_MAPPING_VOLUME_ID,
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BLOCK_DEVICE_MAPPING_SNAPSHOT_ID,
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BLOCK_DEVICE_MAPPING_VOLUME_SIZE,
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BLOCK_DEVICE_MAPPING_DELETE_ON_TERM,
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) = (
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'device_name', 'volume_id',
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'snapshot_id',
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'volume_size',
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'delete_on_termination',
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)
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_NETWORK_KEYS = (
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NETWORK_UUID, NETWORK_ID, NETWORK_FIXED_IP, NETWORK_PORT,
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) = (
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'uuid', 'network', 'fixed_ip', 'port',
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)
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properties_schema = {
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NAME: properties.Schema(
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properties.Schema.STRING,
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_('Server name.')
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),
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IMAGE: properties.Schema(
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properties.Schema.STRING,
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_('The ID or name of the image to boot with.'),
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update_allowed=True
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),
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BLOCK_DEVICE_MAPPING: properties.Schema(
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properties.Schema.LIST,
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_('Block device mappings for this server.'),
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schema=properties.Schema(
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properties.Schema.MAP,
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schema={
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BLOCK_DEVICE_MAPPING_DEVICE_NAME: properties.Schema(
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properties.Schema.STRING,
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_('A device name where the volume will be '
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'attached in the system at /dev/device_name. '
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'This value is typically vda.'),
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required=True
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),
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BLOCK_DEVICE_MAPPING_VOLUME_ID: properties.Schema(
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properties.Schema.STRING,
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_('The ID of the volume to boot from. Only one '
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'of volume_id or snapshot_id should be '
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'provided.')
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),
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BLOCK_DEVICE_MAPPING_SNAPSHOT_ID: properties.Schema(
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properties.Schema.STRING,
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_('The ID of the snapshot to create a volume '
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'from.')
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),
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BLOCK_DEVICE_MAPPING_VOLUME_SIZE: properties.Schema(
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properties.Schema.INTEGER,
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_('The size of the volume, in GB. It is safe to '
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'leave this blank and have the Compute service '
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'infer the size.')
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),
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BLOCK_DEVICE_MAPPING_DELETE_ON_TERM: properties.Schema(
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properties.Schema.BOOLEAN,
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_('Indicate whether the volume should be deleted '
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'when the server is terminated.')
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),
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},
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)
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),
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FLAVOR: properties.Schema(
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properties.Schema.STRING,
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_('The ID or name of the flavor to boot onto.'),
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required=True,
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update_allowed=True
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),
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FLAVOR_UPDATE_POLICY: properties.Schema(
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properties.Schema.STRING,
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_('Policy on how to apply a flavor update; either by requesting '
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'a server resize or by replacing the entire server.'),
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default='RESIZE',
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constraints=[
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constraints.AllowedValues(['RESIZE', 'REPLACE']),
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],
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update_allowed=True
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),
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IMAGE_UPDATE_POLICY: properties.Schema(
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properties.Schema.STRING,
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_('Policy on how to apply an image-id update; either by '
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'requesting a server rebuild or by replacing the entire server'),
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default='REPLACE',
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constraints=[
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constraints.AllowedValues(['REBUILD', 'REPLACE',
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'REBUILD_PRESERVE_EPHEMERAL']),
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],
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update_allowed=True
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),
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KEY_NAME: properties.Schema(
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properties.Schema.STRING,
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_('Name of keypair to inject into the server.'),
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constraints=[
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constraints.CustomConstraint('nova.keypair')
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]
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),
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ADMIN_USER: properties.Schema(
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properties.Schema.STRING,
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_('Name of the administrative user to use on the server.'),
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default=cfg.CONF.instance_user
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),
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AVAILABILITY_ZONE: properties.Schema(
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properties.Schema.STRING,
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_('Name of the availability zone for server placement.')
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),
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SECURITY_GROUPS: properties.Schema(
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properties.Schema.LIST,
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_('List of security group names or IDs.'),
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default=[]
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),
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NETWORKS: properties.Schema(
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properties.Schema.LIST,
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_('An ordered list of nics to be added to this server, with '
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'information about connected networks, fixed ips, port etc.'),
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schema=properties.Schema(
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properties.Schema.MAP,
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schema={
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NETWORK_UUID: properties.Schema(
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properties.Schema.STRING,
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_('DEPRECATED! ID of network to create a port on.'),
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),
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NETWORK_ID: properties.Schema(
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properties.Schema.STRING,
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_('Name or ID of network to create a port on.')
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),
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NETWORK_FIXED_IP: properties.Schema(
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properties.Schema.STRING,
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_('Fixed IP address to specify for the port '
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'created on the requested network.')
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),
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NETWORK_PORT: properties.Schema(
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properties.Schema.STRING,
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_('ID of an existing port to associate with this '
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'server.')
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),
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},
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)
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),
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SCHEDULER_HINTS: properties.Schema(
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properties.Schema.MAP,
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_('Arbitrary key-value pairs specified by the client to help '
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'boot a server.')
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),
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METADATA: properties.Schema(
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properties.Schema.MAP,
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_('Arbitrary key/value metadata to store for this server. Both '
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'keys and values must be 255 characters or less. Non-string '
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'values will be serialized to JSON (and the serialized '
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'string must be 255 characters or less).'),
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update_allowed=True
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),
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USER_DATA_FORMAT: properties.Schema(
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properties.Schema.STRING,
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_('How the user_data should be formatted for the server. For '
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'HEAT_CFNTOOLS, the user_data is bundled as part of the '
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'heat-cfntools cloud-init boot configuration data. For RAW, '
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'the user_data is passed to Nova unmodified.'),
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default='HEAT_CFNTOOLS',
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constraints=[
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constraints.AllowedValues(['HEAT_CFNTOOLS', 'RAW']),
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]
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),
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USER_DATA: properties.Schema(
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properties.Schema.STRING,
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_('User data script to be executed by cloud-init.'),
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default=''
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),
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RESERVATION_ID: properties.Schema(
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properties.Schema.STRING,
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_('A UUID for the set of servers being requested.')
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),
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CONFIG_DRIVE: properties.Schema(
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properties.Schema.STRING,
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_('value for config drive either boolean, or volume-id.')
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),
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DISK_CONFIG: properties.Schema(
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properties.Schema.STRING,
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_('Control how the disk is partitioned when the server is '
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'created.'),
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constraints=[
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constraints.AllowedValues(['AUTO', 'MANUAL']),
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]
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),
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PERSONALITY: properties.Schema(
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properties.Schema.MAP,
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_('A map of files to create/overwrite on the server upon boot. '
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'Keys are file names and values are the file contents.'),
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default={}
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)
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}
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attributes_schema = {
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'show': _('A dict of all server details as returned by the API.'),
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'addresses': _('A dict of all network addresses as returned by '
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'the API.'),
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'networks': _('A dict of assigned network addresses of the form: '
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'{"public": [ip1, ip2...], "private": [ip3, ip4]}.'),
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'first_address': _('Convenience attribute to fetch the first '
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'assigned network address, or an '
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'empty string if nothing has been assigned '
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'at this time. Result may not be predictable '
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'if the server has addresses from more than one '
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'network.'),
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'instance_name': _('AWS compatible instance name.'),
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'accessIPv4': _('The manually assigned alternative public IPv4 '
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'address of the server.'),
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'accessIPv6': _('The manually assigned alternative public IPv6 '
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'address of the server.'),
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}
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update_allowed_keys = ('Metadata', 'Properties')
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# Server host name limit to 53 characters by due to typical default
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# linux HOST_NAME_MAX of 64, minus the .novalocal appended to the name
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physical_resource_name_limit = 53
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def __init__(self, name, json_snippet, stack):
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super(Server, self).__init__(name, json_snippet, stack)
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def physical_resource_name(self):
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name = self.properties.get(self.NAME)
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if name:
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return name
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return super(Server, self).physical_resource_name()
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def _personality(self):
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# This method is overridden by the derived CloudServer resource
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return self.properties.get(self.PERSONALITY)
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def _key_name(self):
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# This method is overridden by the derived CloudServer resource
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return self.properties.get(self.KEY_NAME)
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def handle_create(self):
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security_groups = self.properties.get(self.SECURITY_GROUPS)
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user_data_format = self.properties.get(self.USER_DATA_FORMAT)
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userdata = nova_utils.build_userdata(
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self,
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self.properties.get(self.USER_DATA),
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instance_user=self.properties[self.ADMIN_USER],
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user_data_format=user_data_format)
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flavor = self.properties[self.FLAVOR]
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availability_zone = self.properties[self.AVAILABILITY_ZONE]
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image = self.properties.get(self.IMAGE)
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if image:
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image = nova_utils.get_image_id(self.nova(), image)
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flavor_id = nova_utils.get_flavor_id(self.nova(), flavor)
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instance_meta = self.properties.get(self.METADATA)
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if instance_meta is not None:
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instance_meta = nova_utils.meta_serialize(instance_meta)
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scheduler_hints = self.properties.get(self.SCHEDULER_HINTS)
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nics = self._build_nics(self.properties.get(self.NETWORKS))
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block_device_mapping = self._build_block_device_mapping(
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self.properties.get(self.BLOCK_DEVICE_MAPPING))
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reservation_id = self.properties.get(self.RESERVATION_ID)
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config_drive = self.properties.get(self.CONFIG_DRIVE)
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disk_config = self.properties.get(self.DISK_CONFIG)
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server = None
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try:
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server = self.nova().servers.create(
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name=self.physical_resource_name(),
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image=image,
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flavor=flavor_id,
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key_name=self._key_name(),
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security_groups=security_groups,
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userdata=userdata,
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meta=instance_meta,
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scheduler_hints=scheduler_hints,
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nics=nics,
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availability_zone=availability_zone,
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block_device_mapping=block_device_mapping,
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reservation_id=reservation_id,
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config_drive=config_drive,
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disk_config=disk_config,
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files=self._personality())
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finally:
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# Avoid a race condition where the thread could be cancelled
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# before the ID is stored
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if server is not None:
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self.resource_id_set(server.id)
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return server
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def check_create_complete(self, server):
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return self._check_active(server)
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def _refresh_server(self, server):
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try:
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server.get()
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except clients.novaclient.exceptions.ClientException as exc:
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if exc.code == 500:
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msg = _("Stack %(name)s (%(id)s) received the following "
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"exception during server.get(): %(exception)s")
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logger.warning(msg % {'name': self.stack.name,
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'id': self.stack.id,
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'exception': str(exc)})
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else:
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raise
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def _check_active(self, server):
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if server.status != 'ACTIVE':
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self._refresh_server(server)
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# Some clouds append extra (STATUS) strings to the status
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short_server_status = server.status.split('(')[0]
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if short_server_status in nova_utils.deferred_server_statuses:
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return False
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elif server.status == 'ACTIVE':
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return True
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elif server.status == 'ERROR':
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exc = exception.Error(_('Creation of server %s failed.') %
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server.name)
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raise exc
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else:
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exc = exception.Error(_('Creation of server %(server)s failed '
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'with unknown status: %(status)s') %
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dict(server=server.name,
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status=server.status))
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raise exc
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@classmethod
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def _build_block_device_mapping(cls, bdm):
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if not bdm:
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return None
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bdm_dict = {}
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for mapping in bdm:
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mapping_parts = []
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snapshot_id = mapping.get(cls.BLOCK_DEVICE_MAPPING_SNAPSHOT_ID)
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if snapshot_id:
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mapping_parts.append(snapshot_id)
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mapping_parts.append('snap')
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else:
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volume_id = mapping.get(cls.BLOCK_DEVICE_MAPPING_VOLUME_ID)
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mapping_parts.append(volume_id)
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mapping_parts.append('')
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volume_size = mapping.get(cls.BLOCK_DEVICE_MAPPING_VOLUME_SIZE)
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delete = mapping.get(cls.BLOCK_DEVICE_MAPPING_DELETE_ON_TERM)
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if volume_size or delete:
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mapping_parts.append(str(volume_size or 0))
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if delete:
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mapping_parts.append(str(delete))
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device_name = mapping.get(cls.BLOCK_DEVICE_MAPPING_DEVICE_NAME)
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bdm_dict[device_name] = ':'.join(mapping_parts)
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return bdm_dict
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def _build_nics(self, networks):
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if not networks:
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return None
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nics = []
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for net_data in networks:
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nic_info = {}
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if net_data.get(self.NETWORK_UUID):
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nic_info['net-id'] = net_data[self.NETWORK_UUID]
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label_or_uuid = net_data.get(self.NETWORK_ID)
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if label_or_uuid:
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if uuidutils.is_uuid_like(label_or_uuid):
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nic_info['net-id'] = label_or_uuid
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else:
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network = self.nova().networks.find(label=label_or_uuid)
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nic_info['net-id'] = network.id
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if net_data.get(self.NETWORK_FIXED_IP):
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nic_info['v4-fixed-ip'] = net_data[self.NETWORK_FIXED_IP]
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if net_data.get(self.NETWORK_PORT):
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nic_info['port-id'] = net_data[self.NETWORK_PORT]
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nics.append(nic_info)
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return nics
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def _resolve_attribute(self, name):
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if name == 'first_address':
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return nova_utils.server_to_ipaddress(
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self.nova(), self.resource_id) or ''
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server = self.nova().servers.get(self.resource_id)
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if name == 'addresses':
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return server.addresses
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if name == 'networks':
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return server.networks
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if name == 'instance_name':
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return server._info.get('OS-EXT-SRV-ATTR:instance_name')
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if name == 'accessIPv4':
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return server.accessIPv4
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if name == 'accessIPv6':
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return server.accessIPv6
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if name == 'show':
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return server._info
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def handle_update(self, json_snippet, tmpl_diff, prop_diff):
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if 'Metadata' in tmpl_diff:
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self.metadata = tmpl_diff['Metadata']
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checkers = []
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server = None
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if self.METADATA in prop_diff:
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server = self.nova().servers.get(self.resource_id)
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nova_utils.meta_update(self.nova(),
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server,
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prop_diff[self.METADATA])
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if self.FLAVOR in prop_diff:
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flavor_update_policy = (
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prop_diff.get(self.FLAVOR_UPDATE_POLICY) or
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self.properties.get(self.FLAVOR_UPDATE_POLICY))
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if flavor_update_policy == 'REPLACE':
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raise resource.UpdateReplace(self.name)
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flavor = prop_diff[self.FLAVOR]
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flavor_id = nova_utils.get_flavor_id(self.nova(), flavor)
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if not server:
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server = self.nova().servers.get(self.resource_id)
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checker = scheduler.TaskRunner(nova_utils.resize, server, flavor,
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flavor_id)
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checkers.append(checker)
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if self.IMAGE in prop_diff:
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image_update_policy = (
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prop_diff.get(self.IMAGE_UPDATE_POLICY) or
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self.properties.get(self.IMAGE_UPDATE_POLICY))
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if image_update_policy == 'REPLACE':
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raise resource.UpdateReplace(self.name)
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image = prop_diff[self.IMAGE]
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image_id = nova_utils.get_image_id(self.nova(), image)
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if not server:
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server = self.nova().servers.get(self.resource_id)
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preserve_ephemeral = (
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image_update_policy == 'REBUILD_PRESERVE_EPHEMERAL')
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checker = scheduler.TaskRunner(
|
|
nova_utils.rebuild, server, image_id,
|
|
preserve_ephemeral=preserve_ephemeral)
|
|
checkers.append(checker)
|
|
|
|
# Optimization: make sure the first task is started before
|
|
# check_update_complete.
|
|
if checkers:
|
|
checkers[0].start()
|
|
|
|
return checkers
|
|
|
|
def check_update_complete(self, checkers):
|
|
'''Push all checkers to completion in list order.'''
|
|
for checker in checkers:
|
|
if not checker.started():
|
|
checker.start()
|
|
if not checker.step():
|
|
return False
|
|
return True
|
|
|
|
def metadata_update(self, new_metadata=None):
|
|
'''
|
|
Refresh the metadata if new_metadata is None
|
|
'''
|
|
if new_metadata is None:
|
|
self.metadata = self.parsed_template('Metadata')
|
|
|
|
def validate(self):
|
|
'''
|
|
Validate any of the provided params
|
|
'''
|
|
super(Server, self).validate()
|
|
|
|
# either volume_id or snapshot_id needs to be specified, but not both
|
|
# for block device mapping.
|
|
bdm = self.properties.get(self.BLOCK_DEVICE_MAPPING) or []
|
|
bootable_vol = False
|
|
for mapping in bdm:
|
|
device_name = mapping[self.BLOCK_DEVICE_MAPPING_DEVICE_NAME]
|
|
if device_name == 'vda':
|
|
bootable_vol = True
|
|
|
|
volume_id = mapping.get(self.BLOCK_DEVICE_MAPPING_VOLUME_ID)
|
|
snapshot_id = mapping.get(self.BLOCK_DEVICE_MAPPING_SNAPSHOT_ID)
|
|
if volume_id and snapshot_id:
|
|
raise exception.ResourcePropertyConflict(
|
|
self.BLOCK_DEVICE_MAPPING_VOLUME_ID,
|
|
self.BLOCK_DEVICE_MAPPING_SNAPSHOT_ID)
|
|
if not volume_id and not snapshot_id:
|
|
msg = _('Either volume_id or snapshot_id must be specified for'
|
|
' device mapping %s') % device_name
|
|
raise exception.StackValidationFailed(message=msg)
|
|
|
|
# make sure the image exists if specified.
|
|
image = self.properties.get(self.IMAGE)
|
|
if image:
|
|
nova_utils.get_image_id(self.nova(), image)
|
|
elif not image and not bootable_vol:
|
|
msg = _('Neither image nor bootable volume is specified for'
|
|
' instance %s') % self.name
|
|
raise exception.StackValidationFailed(message=msg)
|
|
# network properties 'uuid' and 'network' shouldn't be used
|
|
# both at once for all networks
|
|
networks = self.properties.get(self.NETWORKS) or []
|
|
for network in networks:
|
|
if network.get(self.NETWORK_UUID) and network.get(self.NETWORK_ID):
|
|
msg = _('Properties "%(uuid)s" and "%(id)s" are both set '
|
|
'to the network "%(network)s" for the server '
|
|
'"%(server)s". The "%(uuid)s" property is deprecated. '
|
|
'Use only "%(id)s" property.'
|
|
'') % dict(uuid=self.NETWORK_UUID,
|
|
id=self.NETWORK_ID,
|
|
network=network[self.NETWORK_ID],
|
|
server=self.name)
|
|
raise exception.StackValidationFailed(message=msg)
|
|
elif network.get(self.NETWORK_UUID):
|
|
logger.info(_('For the server "%(server)s" the "%(uuid)s" '
|
|
'property is set to network "%(network)s". '
|
|
'"%(uuid)s" property is deprecated. Use '
|
|
'"%(id)s" property instead.'
|
|
'') % dict(uuid=self.NETWORK_UUID,
|
|
id=self.NETWORK_ID,
|
|
network=network[self.NETWORK_ID],
|
|
server=self.name))
|
|
|
|
# retrieve provider's absolute limits if it will be needed
|
|
metadata = self.properties.get(self.METADATA)
|
|
personality = self._personality()
|
|
if metadata is not None or personality is not None:
|
|
limits = nova_utils.absolute_limits(self.nova())
|
|
|
|
# verify that the number of metadata entries is not greater
|
|
# than the maximum number allowed in the provider's absolute
|
|
# limits
|
|
if metadata is not None:
|
|
if len(metadata) > limits['maxServerMeta']:
|
|
msg = _('Instance metadata must not contain greater than %s '
|
|
'entries. This is the maximum number allowed by your '
|
|
'service provider') % limits['maxServerMeta']
|
|
raise exception.StackValidationFailed(message=msg)
|
|
|
|
# verify the number of personality files and the size of each
|
|
# personality file against the provider's absolute limits
|
|
if personality is not None:
|
|
if len(personality) > limits['maxPersonality']:
|
|
msg = _("The personality property may not contain "
|
|
"greater than %s entries.") % limits['maxPersonality']
|
|
raise exception.StackValidationFailed(message=msg)
|
|
|
|
for path, contents in personality.items():
|
|
if len(bytes(contents)) > limits['maxPersonalitySize']:
|
|
msg = (_("The contents of personality file \"%(path)s\" "
|
|
"is larger than the maximum allowed personality "
|
|
"file size (%(max_size)s bytes).") %
|
|
{'path': path,
|
|
'max_size': limits['maxPersonalitySize']})
|
|
raise exception.StackValidationFailed(message=msg)
|
|
|
|
def handle_delete(self):
|
|
'''
|
|
Delete a server, blocking until it is disposed by OpenStack
|
|
'''
|
|
if self.resource_id is None:
|
|
return
|
|
|
|
try:
|
|
server = self.nova().servers.get(self.resource_id)
|
|
except clients.novaclient.exceptions.NotFound:
|
|
pass
|
|
else:
|
|
delete = scheduler.TaskRunner(nova_utils.delete_server, server)
|
|
delete(wait_time=0.2)
|
|
|
|
self.resource_id_set(None)
|
|
|
|
def handle_suspend(self):
|
|
'''
|
|
Suspend a server - note we do not wait for the SUSPENDED state,
|
|
this is polled for by check_suspend_complete in a similar way to the
|
|
create logic so we can take advantage of coroutines
|
|
'''
|
|
if self.resource_id is None:
|
|
raise exception.Error(_('Cannot suspend %s, resource_id not set') %
|
|
self.name)
|
|
|
|
try:
|
|
server = self.nova().servers.get(self.resource_id)
|
|
except clients.novaclient.exceptions.NotFound:
|
|
raise exception.NotFound(_('Failed to find server %s') %
|
|
self.resource_id)
|
|
else:
|
|
logger.debug(_('suspending server %s') % self.resource_id)
|
|
# We want the server.suspend to happen after the volume
|
|
# detachement has finished, so pass both tasks and the server
|
|
suspend_runner = scheduler.TaskRunner(server.suspend)
|
|
return server, suspend_runner
|
|
|
|
def check_suspend_complete(self, cookie):
|
|
server, suspend_runner = cookie
|
|
|
|
if not suspend_runner.started():
|
|
suspend_runner.start()
|
|
|
|
if suspend_runner.done():
|
|
if server.status == 'SUSPENDED':
|
|
return True
|
|
|
|
self._refresh_server(server)
|
|
logger.debug(_('%(name)s check_suspend_complete status '
|
|
'= %(status)s') % {
|
|
'name': self.name, 'status': server.status})
|
|
if server.status in list(nova_utils.deferred_server_statuses +
|
|
['ACTIVE']):
|
|
return server.status == 'SUSPENDED'
|
|
else:
|
|
exc = exception.Error(_('Suspend of server %(server)s failed '
|
|
'with unknown status: %(status)s') %
|
|
dict(server=server.name,
|
|
status=server.status))
|
|
raise exc
|
|
|
|
def handle_resume(self):
|
|
'''
|
|
Resume a server - note we do not wait for the ACTIVE state,
|
|
this is polled for by check_resume_complete in a similar way to the
|
|
create logic so we can take advantage of coroutines
|
|
'''
|
|
if self.resource_id is None:
|
|
raise exception.Error(_('Cannot resume %s, resource_id not set') %
|
|
self.name)
|
|
|
|
try:
|
|
server = self.nova().servers.get(self.resource_id)
|
|
except clients.novaclient.exceptions.NotFound:
|
|
raise exception.NotFound(_('Failed to find server %s') %
|
|
self.resource_id)
|
|
else:
|
|
logger.debug(_('resuming server %s') % self.resource_id)
|
|
server.resume()
|
|
return server
|
|
|
|
def check_resume_complete(self, server):
|
|
return self._check_active(server)
|
|
|
|
|
|
def resource_mapping():
|
|
return {
|
|
'OS::Nova::Server': Server,
|
|
}
|