567 lines
24 KiB
Python
567 lines
24 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright [2010] [Anso Labs, LLC]
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Cloud Controller: Implementation of EC2 REST API calls, which are
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dispatched to other nodes via AMQP RPC. State is via distributed
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datastore.
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"""
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import base64
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import json
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import logging
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import os
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import time
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from nova import vendor
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from twisted.internet import defer
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from nova import datastore
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from nova import flags
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from nova import rpc
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from nova import utils
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from nova import exception
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from nova.auth import users
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from nova.compute import model
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from nova.compute import network
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from nova.endpoint import images
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from nova.volume import storage
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FLAGS = flags.FLAGS
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flags.DEFINE_string('cloud_topic', 'cloud', 'the topic clouds listen on')
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def _gen_key(user_id, key_name):
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""" Tuck this into UserManager """
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try:
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manager = users.UserManager.instance()
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private_key, fingerprint = manager.generate_key_pair(user_id, key_name)
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except Exception as ex:
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return {'exception': ex}
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return {'private_key': private_key, 'fingerprint': fingerprint}
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class CloudController(object):
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""" CloudController provides the critical dispatch between
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inbound API calls through the endpoint and messages
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sent to the other nodes.
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"""
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def __init__(self):
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self.instdir = model.InstanceDirectory()
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self.network = network.PublicNetworkController()
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self.setup()
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@property
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def instances(self):
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""" All instances in the system, as dicts """
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for instance in self.instdir.all:
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yield {instance['instance_id']: instance}
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@property
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def volumes(self):
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""" returns a list of all volumes """
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for volume_id in datastore.Redis.instance().smembers("volumes"):
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volume = storage.Volume(volume_id=volume_id)
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yield volume
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def __str__(self):
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return 'CloudController'
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def setup(self):
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""" Ensure the keychains and folders exist. """
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# Create keys folder, if it doesn't exist
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if not os.path.exists(FLAGS.keys_path):
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os.makedirs(os.path.abspath(FLAGS.keys_path))
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# Gen root CA, if we don't have one
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root_ca_path = os.path.join(FLAGS.ca_path, FLAGS.ca_file)
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if not os.path.exists(root_ca_path):
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start = os.getcwd()
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os.chdir(FLAGS.ca_path)
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utils.runthis("Generating root CA: %s", "sh genrootca.sh")
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os.chdir(start)
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# TODO: Do this with M2Crypto instead
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def get_instance_by_ip(self, ip):
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return self.instdir.by_ip(ip)
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def get_metadata(self, ip):
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i = self.get_instance_by_ip(ip)
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if i is None:
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return None
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if i['key_name']:
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keys = {
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'0': {
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'_name': i['key_name'],
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'openssh-key': i['key_data']
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}
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}
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else:
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keys = ''
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data = {
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'user-data': base64.b64decode(i['user_data']),
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'meta-data': {
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'ami-id': i['image_id'],
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'ami-launch-index': i['ami_launch_index'],
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'ami-manifest-path': 'FIXME', # image property
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'block-device-mapping': { # TODO: replace with real data
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'ami': 'sda1',
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'ephemeral0': 'sda2',
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'root': '/dev/sda1',
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'swap': 'sda3'
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},
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'hostname': i['private_dns_name'], # is this public sometimes?
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'instance-action': 'none',
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'instance-id': i['instance_id'],
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'instance-type': i.get('instance_type', ''),
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'local-hostname': i['private_dns_name'],
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'local-ipv4': i['private_dns_name'], # TODO: switch to IP
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'kernel-id': i.get('kernel_id', ''),
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'placement': {
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'availaibility-zone': i.get('availability_zone', 'nova'),
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},
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'public-hostname': i.get('dns_name', ''),
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'public-ipv4': i.get('dns_name', ''), # TODO: switch to IP
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'public-keys' : keys,
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'ramdisk-id': i.get('ramdisk_id', ''),
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'reservation-id': i['reservation_id'],
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'security-groups': i.get('groups', '')
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}
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}
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if False: # TODO: store ancestor ids
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data['ancestor-ami-ids'] = []
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if i.get('product_codes', None):
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data['product-codes'] = i['product_codes']
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return data
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def describe_availability_zones(self, context, **kwargs):
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return {'availabilityZoneInfo': [{'zoneName': 'nova',
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'zoneState': 'available'}]}
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def describe_key_pairs(self, context, key_name=None, **kwargs):
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key_pairs = []
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key_names = key_name and key_name or []
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if len(key_names) > 0:
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for key_name in key_names:
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key_pair = context.user.get_key_pair(key_name)
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if key_pair != None:
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key_pairs.append({
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'keyName': key_pair.name,
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'keyFingerprint': key_pair.fingerprint,
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})
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else:
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for key_pair in context.user.get_key_pairs():
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key_pairs.append({
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'keyName': key_pair.name,
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'keyFingerprint': key_pair.fingerprint,
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})
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return { 'keypairsSet': key_pairs }
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def create_key_pair(self, context, key_name, **kwargs):
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try:
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d = defer.Deferred()
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p = context.handler.application.settings.get('pool')
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def _complete(kwargs):
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if 'exception' in kwargs:
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d.errback(kwargs['exception'])
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return
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d.callback({'keyName': key_name,
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'keyFingerprint': kwargs['fingerprint'],
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'keyMaterial': kwargs['private_key']})
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p.apply_async(_gen_key, [context.user.id, key_name],
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callback=_complete)
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return d
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except users.UserError, e:
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raise
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def delete_key_pair(self, context, key_name, **kwargs):
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context.user.delete_key_pair(key_name)
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# aws returns true even if the key doens't exist
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return True
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def describe_security_groups(self, context, group_names, **kwargs):
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groups = { 'securityGroupSet': [] }
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# Stubbed for now to unblock other things.
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return groups
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def create_security_group(self, context, group_name, **kwargs):
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return True
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def delete_security_group(self, context, group_name, **kwargs):
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return True
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def get_console_output(self, context, instance_id, **kwargs):
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# instance_id is passed in as a list of instances
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instance = self._get_instance(context, instance_id[0])
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if instance['state'] == 'pending':
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raise exception.ApiError('Cannot get output for pending instance')
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return rpc.call('%s.%s' % (FLAGS.compute_topic, instance['node_name']),
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{"method": "get_console_output",
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"args" : {"instance_id": instance_id[0]}})
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def _get_user_id(self, context):
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if context and context.user:
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return context.user.id
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else:
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return None
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def describe_volumes(self, context, **kwargs):
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volumes = []
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for volume in self.volumes:
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if context.user.is_admin() or volume['project_id'] == context.project.id:
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v = self.format_volume(context, volume)
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volumes.append(v)
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return defer.succeed({'volumeSet': volumes})
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def format_volume(self, context, volume):
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v = {}
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v['volumeId'] = volume['volume_id']
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v['status'] = volume['status']
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v['size'] = volume['size']
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v['availabilityZone'] = volume['availability_zone']
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v['createTime'] = volume['create_time']
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if context.user.is_admin():
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v['status'] = '%s (%s, %s, %s, %s)' % (
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volume.get('status', None),
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volume.get('user_id', None),
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volume.get('node_name', None),
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volume.get('instance_id', ''),
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volume.get('mountpoint', ''))
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return v
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def create_volume(self, context, size, **kwargs):
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# TODO(vish): refactor this to create the volume object here and tell storage to create it
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res = rpc.call(FLAGS.storage_topic, {"method": "create_volume",
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"args" : {"size": size,
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"user_id": context.user.id}})
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def _format_result(result):
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volume = self._get_volume(context, result['result'])
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return {'volumeSet': [self.format_volume(context, volume)]}
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res.addCallback(_format_result)
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return res
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def _get_address(self, context, public_ip):
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# FIXME(vish) this should move into network.py
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for address in self.network.hosts:
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if address['address'] == public_ip:
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if context.user.is_admin() or address['project_id'] == context.project.id:
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return address
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raise exception.NotFound("Address at ip %s not found" % public_ip)
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def _get_image(self, context, image_id):
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"""passes in context because
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objectstore does its own authorization"""
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result = images.list(context, [image_id])
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if not result:
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raise exception.NotFound('Image %s could not be found' % image_id)
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image = result[0]
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return image
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def _get_instance(self, context, instance_id):
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for instance in self.instances:
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if instance['instance_id'] == instance_id:
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if context.user.is_admin() or instance['project_id'] == context.project.id:
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return instance
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raise exception.NotFound('Instance %s could not be found' % instance_id)
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def _get_volume(self, context, volume_id):
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for volume in self.volumes:
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if volume['volume_id'] == volume_id:
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if context.user.is_admin() or volume['project_id'] == context.project.id:
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return volume
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raise exception.NotFound('Volume %s could not be found' % volume_id)
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def attach_volume(self, context, volume_id, instance_id, device, **kwargs):
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volume = self._get_volume(context, volume_id)
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storage_node = volume['node_name']
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# TODO: (joshua) Fix volumes to store creator id
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instance = self._get_instance(context, instance_id)
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compute_node = instance['node_name']
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aoe_device = volume['aoe_device']
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# Needs to get right node controller for attaching to
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# TODO: Maybe have another exchange that goes to everyone?
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rpc.cast('%s.%s' % (FLAGS.compute_topic, compute_node),
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{"method": "attach_volume",
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"args" : {"aoe_device": aoe_device,
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"instance_id" : instance_id,
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"mountpoint" : device}})
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rpc.cast('%s.%s' % (FLAGS.storage_topic, storage_node),
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{"method": "attach_volume",
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"args" : {"volume_id": volume_id,
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"instance_id" : instance_id,
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"mountpoint" : device}})
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return defer.succeed(True)
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def detach_volume(self, context, volume_id, **kwargs):
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# TODO(joshua): Make sure the updated state has been received first
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volume = self._get_volume(context, volume_id)
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storage_node = volume['node_name']
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if 'instance_id' in volume.keys():
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instance_id = volume['instance_id']
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try:
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instance = self._get_instance(context, instance_id)
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compute_node = instance['node_name']
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mountpoint = volume['mountpoint']
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rpc.cast('%s.%s' % (FLAGS.compute_topic, compute_node),
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{"method": "detach_volume",
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"args" : {"instance_id": instance_id,
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"mountpoint": mountpoint}})
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except exception.NotFound:
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pass
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rpc.cast('%s.%s' % (FLAGS.storage_topic, storage_node),
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{"method": "detach_volume",
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"args" : {"volume_id": volume_id}})
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return defer.succeed(True)
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def _convert_to_set(self, lst, str):
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if lst == None or lst == []:
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return None
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return [{str: x} for x in lst]
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def describe_instances(self, context, **kwargs):
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return defer.succeed(self._format_instances(context))
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def _format_instances(self, context, reservation_id = None):
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if self.instances == {}:
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return {'reservationSet': []}
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reservations = {}
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for inst in self.instances:
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instance = inst.values()[0]
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res_id = instance.get('reservation_id', 'Unknown')
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if ((context.user.is_admin() or context.project.id == instance['project_id'])
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and (reservation_id == None or reservation_id == res_id)):
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i = {}
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i['instance_id'] = instance.get('instance_id', None)
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i['image_id'] = instance.get('image_id', None)
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i['instance_state'] = {
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'code': 42,
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'name': instance.get('state', 'pending')
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}
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i['public_dns_name'] = self.network.get_public_ip_for_instance(
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i['instance_id'])
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i['private_dns_name'] = instance.get('private_dns_name', None)
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if not i['public_dns_name']:
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i['public_dns_name'] = i['private_dns_name']
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i['dns_name'] = instance.get('dns_name', None)
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i['key_name'] = instance.get('key_name', None)
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if context.user.is_admin():
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i['key_name'] = '%s (%s, %s)' % (i['key_name'],
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instance.get('owner_id', None), instance.get('node_name',''))
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i['product_codes_set'] = self._convert_to_set(
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instance.get('product_codes', None), 'product_code')
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i['instance_type'] = instance.get('instance_type', None)
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i['launch_time'] = instance.get('launch_time', None)
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i['ami_launch_index'] = instance.get('ami_launch_index',
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None)
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if not reservations.has_key(res_id):
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r = {}
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r['reservation_id'] = res_id
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r['owner_id'] = instance.get('project_id', None)
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r['group_set'] = self._convert_to_set(
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instance.get('groups', None), 'group_id')
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r['instances_set'] = []
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reservations[res_id] = r
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reservations[res_id]['instances_set'].append(i)
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instance_response = {'reservationSet' : list(reservations.values()) }
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return instance_response
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def describe_addresses(self, context, **kwargs):
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return self.format_addresses(context.user)
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def format_addresses(self, context):
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addresses = []
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# TODO(vish): move authorization checking into network.py
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for address in self.network.hosts:
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#logging.debug(address_record)
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address_rv = {
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'public_ip': address['address'],
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'instance_id' : address.get('instance_id', 'free')
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}
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if context.user.is_admin():
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address_rv['instance_id'] = "%s (%s, %s)" % (
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address['instance_id'],
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address['user_id'],
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address['project_id'],
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)
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addresses.append(address_rv)
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# logging.debug(addresses)
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return {'addressesSet': addresses}
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def allocate_address(self, context, **kwargs):
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address = self.network.allocate_ip(
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context.user.id, context.project.id, 'public')
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return defer.succeed({'addressSet': [{'publicIp' : address}]})
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def release_address(self, context, public_ip, **kwargs):
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self.network.deallocate_ip(public_ip)
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return defer.succeed({'releaseResponse': ["Address released."]})
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def associate_address(self, context, instance_id, **kwargs):
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instance = self._get_instance(context, instance_id)
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self.network.associate_address(
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kwargs['public_ip'],
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instance['private_dns_name'],
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instance_id)
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return defer.succeed({'associateResponse': ["Address associated."]})
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def disassociate_address(self, context, public_ip, **kwargs):
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address = self._get_address(public_ip)
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self.network.disassociate_address(public_ip)
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# TODO - Strip the IP from the instance
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return defer.succeed({'disassociateResponse': ["Address disassociated."]})
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def run_instances(self, context, **kwargs):
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image = self._get_image(context, kwargs['image_id'])
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logging.debug("Going to run instances...")
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reservation_id = utils.generate_uid('r')
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launch_time = time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime())
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key_data = None
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if kwargs.has_key('key_name'):
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key_pair = context.user.get_key_pair(kwargs['key_name'])
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if not key_pair:
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raise exception.ApiError('Key Pair %s not found' %
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kwargs['key_name'])
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key_data = key_pair.public_key
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for num in range(int(kwargs['max_count'])):
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inst = self.instdir.new()
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# TODO(ja): add ari, aki
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inst['image_id'] = kwargs['image_id']
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inst['user_data'] = kwargs.get('user_data', '')
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inst['instance_type'] = kwargs.get('instance_type', '')
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inst['reservation_id'] = reservation_id
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inst['launch_time'] = launch_time
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inst['key_data'] = key_data or ''
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inst['key_name'] = kwargs.get('key_name', '')
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inst['user_id'] = context.user.id
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inst['project_id'] = context.project.id
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inst['mac_address'] = utils.generate_mac()
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inst['ami_launch_index'] = num
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address = network.allocate_ip(
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inst['user_id'], inst['project_id'], mac=inst['mac_address'])
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inst['private_dns_name'] = str(address)
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inst['bridge_name'] = network.BridgedNetwork.get_network_for_project(inst['user_id'], inst['project_id'])['bridge_name']
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# TODO: allocate expresses on the router node
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inst.save()
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rpc.cast(FLAGS.compute_topic,
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{"method": "run_instance",
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"args": {"instance_id" : inst.instance_id}})
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logging.debug("Casting to node for %s's instance with IP of %s" %
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(context.user.name, inst['private_dns_name']))
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# TODO: Make the NetworkComputeNode figure out the network name from ip.
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|
return defer.succeed(self._format_instances(
|
|
context.user, reservation_id))
|
|
|
|
def terminate_instances(self, context, instance_id, **kwargs):
|
|
logging.debug("Going to start terminating instances")
|
|
for i in instance_id:
|
|
logging.debug("Going to try and terminate %s" % i)
|
|
try:
|
|
instance = self._get_instance(context, i)
|
|
except exception.NotFound:
|
|
logging.warning("Instance %s was not found during terminate" % i)
|
|
continue
|
|
try:
|
|
self.network.disassociate_address(
|
|
instance.get('public_dns_name', 'bork'))
|
|
except:
|
|
pass
|
|
if instance.get('private_dns_name', None):
|
|
logging.debug("Deallocating address %s" % instance.get('private_dns_name', None))
|
|
try:
|
|
self.network.deallocate_ip(instance.get('private_dns_name', None))
|
|
except Exception, _err:
|
|
pass
|
|
if instance.get('node_name', 'unassigned') != 'unassigned': #It's also internal default
|
|
rpc.cast('%s.%s' % (FLAGS.compute_topic, instance['node_name']),
|
|
{"method": "terminate_instance",
|
|
"args" : {"instance_id": i}})
|
|
else:
|
|
instance.destroy()
|
|
return defer.succeed(True)
|
|
|
|
def reboot_instances(self, context, instance_id, **kwargs):
|
|
"""instance_id is a list of instance ids"""
|
|
for i in instance_id:
|
|
instance = self._get_instance(context, i)
|
|
if instance['state'] == 'pending':
|
|
raise exception.ApiError('Cannot reboot pending instance')
|
|
rpc.cast('%s.%s' % (FLAGS.node_topic, instance['node_name']),
|
|
{"method": "reboot_instance",
|
|
"args" : {"instance_id": i}})
|
|
return defer.succeed(True)
|
|
|
|
def delete_volume(self, context, volume_id, **kwargs):
|
|
# TODO: return error if not authorized
|
|
volume = self._get_volume(context, volume_id)
|
|
storage_node = volume['node_name']
|
|
rpc.cast('%s.%s' % (FLAGS.storage_topic, storage_node),
|
|
{"method": "delete_volume",
|
|
"args" : {"volume_id": volume_id}})
|
|
return defer.succeed(True)
|
|
|
|
def describe_images(self, context, image_id=None, **kwargs):
|
|
# The objectstore does its own authorization for describe
|
|
imageSet = images.list(context, image_id)
|
|
return defer.succeed({'imagesSet': imageSet})
|
|
|
|
def deregister_image(self, context, image_id, **kwargs):
|
|
# FIXME: should the objectstore be doing these authorization checks?
|
|
images.deregister(context, image_id)
|
|
return defer.succeed({'imageId': image_id})
|
|
|
|
def register_image(self, context, image_location=None, **kwargs):
|
|
# FIXME: should the objectstore be doing these authorization checks?
|
|
if image_location is None and kwargs.has_key('name'):
|
|
image_location = kwargs['name']
|
|
image_id = images.register(context, image_location)
|
|
logging.debug("Registered %s as %s" % (image_location, image_id))
|
|
|
|
return defer.succeed({'imageId': image_id})
|
|
|
|
def modify_image_attribute(self, context, image_id, attribute, operation_type, **kwargs):
|
|
if attribute != 'launchPermission':
|
|
raise exception.ApiError('only launchPermission is supported')
|
|
if len(kwargs['user_group']) != 1 and kwargs['user_group'][0] != 'all':
|
|
raise exception.ApiError('only group "all" is supported')
|
|
if not operation_type in ['add', 'delete']:
|
|
raise exception.ApiError('operation_type must be add or delete')
|
|
result = images.modify(context.user, image_id, operation_type)
|
|
return defer.succeed(result)
|
|
|
|
def update_state(self, topic, value):
|
|
""" accepts status reports from the queue and consolidates them """
|
|
# TODO(jmc): if an instance has disappeared from
|
|
# the node, call instance_death
|
|
if topic == "instances":
|
|
return defer.succeed(True)
|
|
aggregate_state = getattr(self, topic)
|
|
node_name = value.keys()[0]
|
|
items = value[node_name]
|
|
|
|
logging.debug("Updating %s state for %s" % (topic, node_name))
|
|
|
|
for item_id in items.keys():
|
|
if (aggregate_state.has_key('pending') and
|
|
aggregate_state['pending'].has_key(item_id)):
|
|
del aggregate_state['pending'][item_id]
|
|
aggregate_state[node_name] = items
|
|
|
|
return defer.succeed(True)
|