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cloudsigma.py
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cloudsigma.py
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# -*- coding: utf-8 -*-
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
"""
CloudSigma Driver
"""
import re
import time
import base64
from libcloud.utils.py3 import b
from libcloud.utils.misc import str2dicts, str2list, dict2str
from libcloud.common.base import ConnectionUserAndKey, Response
from libcloud.common.types import InvalidCredsError
from libcloud.compute.types import NodeState, Provider
from libcloud.compute.base import NodeDriver, NodeSize, Node
from libcloud.compute.base import NodeImage
# API end-points
API_ENDPOINTS = {
'zrh': {
'name': 'Zurich',
'country': 'Switzerland',
'host': 'api.zrh.cloudsigma.com'
},
'lvs': {
'name': 'Las Vegas',
'country': 'United States',
'host': 'api.lvs.cloudsigma.com'
}
}
# Default API end-point for the base connection clase.
DEFAULT_ENDPOINT = 'zrh'
# CloudSigma doesn't specify special instance types.
# Basically for CPU any value between 0.5 GHz and 20.0 GHz should work, 500 MB to 32000 MB for ram
# and 1 GB to 1024 GB for hard drive size.
# Plans in this file are based on examples listed on http://www.cloudsigma.com/en/pricing/price-schedules
INSTANCE_TYPES = {
'micro-regular': {
'id': 'micro-regular',
'name': 'Micro/Regular instance',
'cpu': 1100,
'memory': 640,
'disk': 10,
'bandwidth': None,
},
'micro-high-cpu': {
'id': 'micro-high-cpu',
'name': 'Micro/High CPU instance',
'cpu': 2200,
'memory': 640,
'disk': 80,
'bandwidth': None,
},
'standard-small': {
'id': 'standard-small',
'name': 'Standard/Small instance',
'cpu': 1100,
'memory': 1741,
'disk': 50,
'bandwidth': None,
},
'standard-large': {
'id': 'standard-large',
'name': 'Standard/Large instance',
'cpu': 4400,
'memory': 7680,
'disk': 250,
'bandwidth': None,
},
'standard-extra-large': {
'id': 'standard-extra-large',
'name': 'Standard/Extra Large instance',
'cpu': 8800,
'memory': 15360,
'disk': 500,
'bandwidth': None,
},
'high-memory-extra-large': {
'id': 'high-memory-extra-large',
'name': 'High Memory/Extra Large instance',
'cpu': 7150,
'memory': 17510,
'disk': 250,
'bandwidth': None,
},
'high-memory-double-extra-large': {
'id': 'high-memory-double-extra-large',
'name': 'High Memory/Double Extra Large instance',
'cpu': 14300,
'memory': 32768,
'disk': 500,
'bandwidth': None,
},
'high-cpu-medium': {
'id': 'high-cpu-medium',
'name': 'High CPU/Medium instance',
'cpu': 5500,
'memory': 1741,
'disk': 150,
'bandwidth': None,
},
'high-cpu-extra-large': {
'id': 'high-cpu-extra-large',
'name': 'High CPU/Extra Large instance',
'cpu': 20000,
'memory': 7168,
'disk': 500,
'bandwidth': None,
}
}
NODE_STATE_MAP = {
'active': NodeState.RUNNING,
'stopped': NodeState.TERMINATED,
'dead': NodeState.TERMINATED,
'dumped': NodeState.TERMINATED,
}
# Default timeout (in seconds) for the drive imaging process
IMAGING_TIMEOUT = 20 * 60
class CloudSigmaException(Exception):
def __str__(self):
return self.args[0]
def __repr__(self):
return "<CloudSigmaException '%s'>" % (self.args[0])
class CloudSigmaInsufficientFundsException(Exception):
def __repr__(self):
return "<CloudSigmaInsufficientFundsException '%s'>" % (self.args[0])
class CloudSigmaResponse(Response):
def success(self):
if self.status == 401:
raise InvalidCredsError()
return self.status >= 200 and self.status <= 299
def parse_body(self):
if not self.body:
return self.body
return str2dicts(self.body)
def parse_error(self):
return 'Error: %s' % (self.body.replace('errors:', '').strip())
class CloudSigmaNodeSize(NodeSize):
def __init__(self, id, name, cpu, ram, disk, bandwidth, price, driver):
self.id = id
self.name = name
self.cpu = cpu
self.ram = ram
self.disk = disk
self.bandwidth = bandwidth
self.price = price
self.driver = driver
def __repr__(self):
return (('<NodeSize: id=%s, name=%s, cpu=%s, ram=%s disk=%s bandwidth=%s '
'price=%s driver=%s ...>')
% (self.id, self.name, self.cpu, self.ram, self.disk, self.bandwidth,
self.price, self.driver.name))
class CloudSigmaBaseConnection(ConnectionUserAndKey):
host = API_ENDPOINTS[DEFAULT_ENDPOINT]['host']
responseCls = CloudSigmaResponse
def add_default_headers(self, headers):
headers['Accept'] = 'application/json'
headers['Content-Type'] = 'application/json'
headers['Authorization'] = 'Basic %s' % (base64.b64encode(b('%s:%s' %
(self.user_id, self.key))))
return headers
class CloudSigmaBaseNodeDriver(NodeDriver):
type = Provider.CLOUDSIGMA
name = 'CloudSigma'
connectionCls = CloudSigmaBaseConnection
def reboot_node(self, node):
"""
Reboot a node.
Because Cloudsigma API does not provide native reboot call, it's emulated using stop and start.
"""
node = self._get_node(node.id)
state = node.state
if state == NodeState.RUNNING:
stopped = self.ex_stop_node(node)
else:
stopped = True
if not stopped:
raise CloudSigmaException('Could not stop node with id %s' % (node.id))
success = self.ex_start_node(node)
return success
def destroy_node(self, node):
"""
Destroy a node (all the drives associated with it are NOT destroyed).
If a node is still running, it's stopped before it's destroyed.
"""
node = self._get_node(node.id)
state = node.state
# Node cannot be destroyed while running so it must be stopped first
if state == NodeState.RUNNING:
stopped = self.ex_stop_node(node)
else:
stopped = True
if not stopped:
raise CloudSigmaException('Could not stop node with id %s' % (node.id))
response = self.connection.request(action='/servers/%s/destroy' % (node.id),
method='POST')
return response.status == 204
def list_images(self, location=None):
"""
Return a list of available standard images (this call might take up to 15 seconds to return).
"""
response = self.connection.request(action='/drives/standard/info').object
images = []
for value in response:
if value.get('type'):
if value['type'] == 'disk':
image = NodeImage(id=value['drive'], name=value['name'], driver=self.connection.driver,
extra={'size': value['size']})
images.append(image)
return images
def list_sizes(self, location=None):
"""
Return a list of available node sizes.
"""
sizes = []
for key, value in INSTANCE_TYPES.items():
size = CloudSigmaNodeSize(id=value['id'], name=value['name'],
cpu=value['cpu'], ram=value['memory'],
disk=value['disk'], bandwidth=value['bandwidth'],
price=self._get_size_price(size_id=key),
driver=self.connection.driver)
sizes.append(size)
return sizes
def list_nodes(self):
"""
Return a list of nodes.
"""
response = self.connection.request(action='/servers/info').object
nodes = []
for data in response:
node = self._to_node(data)
if node:
nodes.append(node)
return nodes
def create_node(self, **kwargs):
"""
Creates a CloudSigma instance
See L{NodeDriver.create_node} for more keyword args.
@keyword name: String with a name for this new node (required)
@type name: C{string}
@keyword smp: Number of virtual processors or None to calculate based on the cpu speed
@type smp: C{int}
@keyword nic_model: e1000, rtl8139 or virtio (is not specified, e1000 is used)
@type nic_model: C{string}
@keyword vnc_password: If not set, VNC access is disabled.
@type vnc_password: C{bool}
@keyword drive_type: Drive type (ssd|hdd). Defaults to hdd.
@type drive_type: C{str}
"""
size = kwargs['size']
image = kwargs['image']
smp = kwargs.get('smp', 'auto')
nic_model = kwargs.get('nic_model', 'e1000')
vnc_password = kwargs.get('vnc_password', None)
drive_type = kwargs.get('drive_type', 'hdd')
if nic_model not in ['e1000', 'rtl8139', 'virtio']:
raise CloudSigmaException('Invalid NIC model specified')
if drive_type not in ['hdd', 'ssd']:
raise CloudSigmaException('Invalid drive type "%s". Valid types'
' are: hdd, ssd' % (drive_type))
drive_data = {}
drive_data.update({'name': kwargs['name'],
'size': '%sG' % (kwargs['size'].disk),
'driveType': drive_type})
response = self.connection.request(action='/drives/%s/clone' % image.id, data=dict2str(drive_data),
method='POST').object
if not response:
raise CloudSigmaException('Drive creation failed')
drive_uuid = response[0]['drive']
response = self.connection.request(action='/drives/%s/info' % (drive_uuid)).object
imaging_start = time.time()
while 'imaging' in response[0]:
response = self.connection.request(action='/drives/%s/info' % (drive_uuid)).object
elapsed_time = time.time() - imaging_start
if 'imaging' in response[0] and elapsed_time >= IMAGING_TIMEOUT:
raise CloudSigmaException('Drive imaging timed out')
time.sleep(1)
node_data = {}
node_data.update({'name': kwargs['name'], 'cpu': size.cpu, 'mem': size.ram, 'ide:0:0': drive_uuid,
'boot': 'ide:0:0', 'smp': smp})
node_data.update({'nic:0:model': nic_model, 'nic:0:dhcp': 'auto'})
if vnc_password:
node_data.update({'vnc:ip': 'auto', 'vnc:password': vnc_password})
response = self.connection.request(action='/servers/create', data=dict2str(node_data),
method='POST').object
if not isinstance(response, list):
response = [response]
node = self._to_node(response[0])
if node is None:
# Insufficient funds, destroy created drive
self.ex_drive_destroy(drive_uuid)
raise CloudSigmaInsufficientFundsException('Insufficient funds, node creation failed')
# Start the node after it has been created
started = self.ex_start_node(node)
if started:
node.state = NodeState.RUNNING
return node
def ex_destroy_node_and_drives(self, node):
"""
Destroy a node and all the drives associated with it.
"""
node = self._get_node_info(node)
drive_uuids = []
for key, value in node.items():
if (key.startswith('ide:') or key.startswith('scsi') or key.startswith('block')) and \
not (key.endswith(':bytes') or key.endswith(':requests') or key.endswith('media')):
drive_uuids.append(value)
node_destroyed = self.destroy_node(self._to_node(node))
if not node_destroyed:
return False
for drive_uuid in drive_uuids:
self.ex_drive_destroy(drive_uuid)
return True
def ex_static_ip_list(self):
"""
Return a list of available static IP addresses.
"""
response = self.connection.request(action='/resources/ip/list', method='GET')
if response.status != 200:
raise CloudSigmaException('Could not retrieve IP list')
ips = str2list(response.body)
return ips
def ex_drives_list(self):
"""
Return a list of all the available drives.
"""
response = self.connection.request(action='/drives/info', method='GET')
result = str2dicts(response.body)
return result
def ex_static_ip_create(self):
"""
Create a new static IP address.
"""
response = self.connection.request(action='/resources/ip/create', method='GET')
result = str2dicts(response.body)
return result
def ex_static_ip_destroy(self, ip_address):
"""
Destroy a static IP address.
"""
response = self.connection.request(action='/resources/ip/%s/destroy' % (ip_address), method='GET')
return response.status == 204
def ex_drive_destroy(self, drive_uuid):
"""
Destroy a drive with a specified uuid.
If the drive is currently mounted an exception is thrown.
"""
response = self.connection.request(action='/drives/%s/destroy' % (drive_uuid), method='POST')
return response.status == 204
def ex_set_node_configuration(self, node, **kwargs):
"""
Update a node configuration.
Changing most of the parameters requires node to be stopped.
"""
valid_keys = ('^name$', '^parent$', '^cpu$', '^smp$', '^mem$', '^boot$', '^nic:0:model$', '^nic:0:dhcp',
'^nic:1:model$', '^nic:1:vlan$', '^nic:1:mac$', '^vnc:ip$', '^vnc:password$', '^vnc:tls',
'^ide:[0-1]:[0-1](:media)?$', '^scsi:0:[0-7](:media)?$', '^block:[0-7](:media)?$')
invalid_keys = []
keys = list(kwargs.keys())
for key in keys:
matches = False
for regex in valid_keys:
if re.match(regex, key):
matches = True
break
if not matches:
invalid_keys.append(key)
if invalid_keys:
raise CloudSigmaException('Invalid configuration key specified: %s' % (',' .join(invalid_keys)))
response = self.connection.request(action='/servers/%s/set' % (node.id), data=dict2str(kwargs),
method='POST')
return (response.status == 200 and response.body != '')
def ex_start_node(self, node):
"""
Start a node.
"""
response = self.connection.request(action='/servers/%s/start' % (node.id),
method='POST')
return response.status == 200
def ex_stop_node(self, node):
"""
Stop (shutdown) a node.
"""
response = self.connection.request(action='/servers/%s/stop' % (node.id),
method='POST')
return response.status == 204
def ex_shutdown_node(self, node):
"""
Stop (shutdown) a node.
"""
return self.ex_stop_node(node)
def ex_destroy_drive(self, drive_uuid):
"""
Destroy a drive.
"""
response = self.connection.request(action='/drives/%s/destroy' % (drive_uuid),
method='POST')
return response.status == 204
def _to_node(self, data):
if data:
try:
state = NODE_STATE_MAP[data['status']]
except KeyError:
state = NodeState.UNKNOWN
if 'server' not in data:
# Response does not contain server UUID if the server
# creation failed because of insufficient funds.
return None
public_ips = []
if 'nic:0:dhcp' in data:
if isinstance(data['nic:0:dhcp'], list):
public_ips = data['nic:0:dhcp']
else:
public_ips = [data['nic:0:dhcp']]
extra = {}
extra_keys = [('cpu', 'int'), ('smp', 'auto'), ('mem', 'int'), ('status', 'str')]
for key, value_type in extra_keys:
if key in data:
value = data[key]
if value_type == 'int':
value = int(value)
elif value_type == 'auto':
try:
value = int(value)
except ValueError:
pass
extra.update({key: value})
if 'vnc:ip' in data and 'vnc:password' in data:
extra.update({'vnc_ip': data['vnc:ip'], 'vnc_password': data['vnc:password']})
node = Node(id=data['server'], name=data['name'], state=state,
public_ips=public_ips, private_ips=None, driver=self.connection.driver,
extra=extra)
return node
return None
def _get_node(self, node_id):
nodes = self.list_nodes()
node = [node for node in nodes if node.id == node.id]
if not node:
raise CloudSigmaException('Node with id %s does not exist' % (node_id))
return node[0]
def _get_node_info(self, node):
response = self.connection.request(action='/servers/%s/info' % (node.id))
result = str2dicts(response.body)
return result[0]
class CloudSigmaZrhConnection(CloudSigmaBaseConnection):
"""
Connection class for the CloudSigma driver for the Zurich end-point
"""
host = API_ENDPOINTS[DEFAULT_ENDPOINT]['host']
class CloudSigmaZrhNodeDriver(CloudSigmaBaseNodeDriver):
"""
CloudSigma node driver for the Zurich end-point
"""
connectionCls = CloudSigmaZrhConnection
api_name = 'cloudsigma_zrh'
class CloudSigmaLvsConnection(CloudSigmaBaseConnection):
"""
Connection class for the CloudSigma driver for the Las Vegas end-point
"""
host = API_ENDPOINTS['lvs']['host']
class CloudSigmaLvsNodeDriver(CloudSigmaBaseNodeDriver):
"""
CloudSigma node driver for the Las Vegas end-point
"""
connectionCls = CloudSigmaZrhConnection
api_name = 'cloudsigma_lvs'