openstack
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neutron
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neutron/neutron/plugins/nicira/nvplib.py

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Python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 Nicira Networks, Inc.
# All Rights Reserved
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# @author: Brad Hall, Nicira Networks, Inc.
# @author: Dave Lapsley, Nicira Networks, Inc.
# @author: Aaron Rosen, Nicira Networks, Inc.
import hashlib
import inspect
import json
#FIXME(danwent): I'd like this file to get to the point where it has
# no neutron-specific logic in it
from neutron.common import constants
from neutron.common import exceptions as exception
from neutron.openstack.common import excutils
from neutron.openstack.common import log
from neutron.plugins.nicira.common import (
exceptions as nvp_exc)
from neutron.plugins.nicira import NvpApiClient
from neutron.version import version_info
LOG = log.getLogger(__name__)
# HTTP METHODS CONSTANTS
HTTP_GET = "GET"
HTTP_POST = "POST"
HTTP_DELETE = "DELETE"
HTTP_PUT = "PUT"
# Prefix to be used for all NVP API calls
URI_PREFIX = "/ws.v1"
# Resources exposed by NVP API
LSWITCH_RESOURCE = "lswitch"
LSWITCHPORT_RESOURCE = "lport/%s" % LSWITCH_RESOURCE
LROUTER_RESOURCE = "lrouter"
LROUTERPORT_RESOURCE = "lport/%s" % LROUTER_RESOURCE
LROUTERRIB_RESOURCE = "rib/%s" % LROUTER_RESOURCE
LROUTERNAT_RESOURCE = "nat/lrouter"
LQUEUE_RESOURCE = "lqueue"
GWSERVICE_RESOURCE = "gateway-service"
# Current neutron version
NEUTRON_VERSION = version_info.release_string()
# Other constants for NVP resource
MAX_DISPLAY_NAME_LEN = 40
# Constants for NAT rules
MATCH_KEYS = ["destination_ip_addresses", "destination_port_max",
"destination_port_min", "source_ip_addresses",
"source_port_max", "source_port_min", "protocol"]
SNAT_KEYS = ["to_src_port_min", "to_src_port_max", "to_src_ip_min",
"to_src_ip_max"]
DNAT_KEYS = ["to_dst_port", "to_dst_ip_min", "to_dst_ip_max"]
# Maximum page size for a single request
# NOTE(salv-orlando): This might become a version-dependent map should the
# limit be raised in future versions
MAX_PAGE_SIZE = 5000
# TODO(bgh): it would be more efficient to use a bitmap
taken_context_ids = []
# XXX Only cache default for now
_lqueue_cache = {}
def version_dependent(wrapped_func):
func_name = wrapped_func.__name__
def dispatch_version_dependent_function(cluster, *args, **kwargs):
# Call the wrapper function, in case we need to
# run validation checks regarding versions. It
# should return the NVP version
v = (wrapped_func(cluster, *args, **kwargs) or
cluster.api_client.get_nvp_version())
func = get_function_by_version(func_name, v)
func_kwargs = kwargs
arg_spec = inspect.getargspec(func)
if not arg_spec.keywords and not arg_spec.varargs:
# drop args unknown to function from func_args
arg_set = set(func_kwargs.keys())
for arg in arg_set - set(arg_spec.args):
del func_kwargs[arg]
# NOTE(salvatore-orlando): shall we fail here if a required
# argument is not passed, or let the called function raise?
return func(cluster, *args, **func_kwargs)
return dispatch_version_dependent_function
def _build_uri_path(resource,
resource_id=None,
parent_resource_id=None,
fields=None,
relations=None,
filters=None,
types=None,
is_attachment=False):
resources = resource.split('/')
res_path = resources[0] + (resource_id and "/%s" % resource_id or '')
if len(resources) > 1:
# There is also a parent resource to account for in the uri
res_path = "%s/%s/%s" % (resources[1],
parent_resource_id,
res_path)
if is_attachment:
res_path = "%s/attachment" % res_path
params = []
params.append(fields and "fields=%s" % fields)
params.append(relations and "relations=%s" % relations)
params.append(types and "types=%s" % types)
if filters:
params.extend(['%s=%s' % (k, v) for (k, v) in filters.iteritems()])
uri_path = "%s/%s" % (URI_PREFIX, res_path)
non_empty_params = [x for x in params if x is not None]
if non_empty_params:
query_string = '&'.join(non_empty_params)
if query_string:
uri_path += "?%s" % query_string
return uri_path
def _check_and_truncate_name(display_name):
if display_name and len(display_name) > MAX_DISPLAY_NAME_LEN:
LOG.debug(_("Specified name:'%s' exceeds maximum length. "
"It will be truncated on NVP"), display_name)
return display_name[:MAX_DISPLAY_NAME_LEN]
return display_name or ''
def get_cluster_version(cluster):
"""Return major/minor version #."""
# Get control-cluster nodes
uri = "/ws.v1/control-cluster/node?_page_length=1&fields=uuid"
res = do_request(HTTP_GET, uri, cluster=cluster)
if res["result_count"] == 0:
return None
node_uuid = res["results"][0]["uuid"]
# Get control-cluster node status. It's unsupported to have controllers
# running different version so we just need the first node version.
uri = "/ws.v1/control-cluster/node/%s/status" % node_uuid
res = do_request(HTTP_GET, uri, cluster=cluster)
version_parts = res["version"].split(".")
version = "%s.%s" % tuple(version_parts[:2])
LOG.info(_("NVP controller cluster version: %s"), version)
return version
def get_single_query_page(path, cluster, page_cursor=None,
page_length=1000, neutron_only=True):
params = []
if page_cursor:
params.append("_page_cursor=%s" % page_cursor)
params.append("_page_length=%s" % page_length)
# NOTE(salv-orlando): On the NVP backend the 'Quantum' tag is still
# used for marking Neutron entities in order to preserve compatibility
if neutron_only:
params.append("tag_scope=quantum")
query_params = "&".join(params)
path = "%s%s%s" % (path, "&" if (path.find("?") != -1) else "?",
query_params)
body = do_request(HTTP_GET, path, cluster=cluster)
# Result_count won't be returned if _page_cursor is supplied
return body['results'], body.get('page_cursor'), body.get('result_count')
def get_all_query_pages(path, c):
need_more_results = True
result_list = []
page_cursor = None
while need_more_results:
results, page_cursor = get_single_query_page(
path, c, page_cursor)[:2]
if not page_cursor:
need_more_results = False
result_list.extend(results)
return result_list
# -------------------------------------------------------------------
# Network functions
# -------------------------------------------------------------------
def get_lswitches(cluster, neutron_net_id):
lswitch_uri_path = _build_uri_path(LSWITCH_RESOURCE, neutron_net_id,
relations="LogicalSwitchStatus")
results = []
try:
ls = do_request(HTTP_GET, lswitch_uri_path, cluster=cluster)
results.append(ls)
for tag in ls['tags']:
if (tag['scope'] == "multi_lswitch" and
tag['tag'] == "True"):
# Fetch extra logical switches
extra_lswitch_uri_path = _build_uri_path(
LSWITCH_RESOURCE,
fields="uuid,display_name,tags,lport_count",
relations="LogicalSwitchStatus",
filters={'tag': neutron_net_id,
'tag_scope': 'quantum_net_id'})
extra_switches = get_all_query_pages(extra_lswitch_uri_path,
cluster)
results.extend(extra_switches)
return results
except exception.NotFound:
raise exception.NetworkNotFound(net_id=neutron_net_id)
def create_lswitch(cluster, tenant_id, display_name,
transport_zones_config,
neutron_net_id=None,
shared=None,
**kwargs):
lswitch_obj = {"display_name": _check_and_truncate_name(display_name),
"transport_zones": transport_zones_config,
"tags": [{"tag": tenant_id, "scope": "os_tid"},
{"tag": NEUTRON_VERSION, "scope": "quantum"}]}
if neutron_net_id:
lswitch_obj["tags"].append({"tag": neutron_net_id,
"scope": "quantum_net_id"})
if shared:
lswitch_obj["tags"].append({"tag": "true",
"scope": "shared"})
if "tags" in kwargs:
lswitch_obj["tags"].extend(kwargs["tags"])
uri = _build_uri_path(LSWITCH_RESOURCE)
lswitch = do_request(HTTP_POST, uri, json.dumps(lswitch_obj),
cluster=cluster)
LOG.debug(_("Created logical switch: %s"), lswitch['uuid'])
return lswitch
def update_lswitch(cluster, lswitch_id, display_name,
tenant_id=None, **kwargs):
uri = _build_uri_path(LSWITCH_RESOURCE, resource_id=lswitch_id)
lswitch_obj = {"display_name": _check_and_truncate_name(display_name),
"tags": [{"tag": tenant_id, "scope": "os_tid"},
{"tag": NEUTRON_VERSION, "scope": "quantum"}]}
if "tags" in kwargs:
lswitch_obj["tags"].extend(kwargs["tags"])
try:
return do_request(HTTP_PUT, uri, json.dumps(lswitch_obj),
cluster=cluster)
except exception.NotFound as e:
LOG.error(_("Network not found, Error: %s"), str(e))
raise exception.NetworkNotFound(net_id=lswitch_id)
def create_l2_gw_service(cluster, tenant_id, display_name, devices):
"""Create a NVP Layer-2 Network Gateway Service.
:param cluster: The target NVP cluster
:param tenant_id: Identifier of the Openstack tenant for which
the gateway service.
:param display_name: Descriptive name of this gateway service
:param devices: List of transport node uuids (and network
interfaces on them) to use for the network gateway service
:raise NvpApiException: if there is a problem while communicating
with the NVP controller
"""
tags = [{"tag": tenant_id, "scope": "os_tid"},
{"tag": NEUTRON_VERSION, "scope": "quantum"}]
# NOTE(salvatore-orlando): This is a little confusing, but device_id in
# NVP is actually the identifier a physical interface on the gateway
# device, which in the Neutron API is referred as interface_name
gateways = [{"transport_node_uuid": device['id'],
"device_id": device['interface_name'],
"type": "L2Gateway"} for device in devices]
gwservice_obj = {
"display_name": _check_and_truncate_name(display_name),
"tags": tags,
"gateways": gateways,
"type": "L2GatewayServiceConfig"
}
return do_request(
"POST", _build_uri_path(GWSERVICE_RESOURCE),
json.dumps(gwservice_obj), cluster=cluster)
def _prepare_lrouter_body(name, tenant_id, router_type,
distributed=None, **kwargs):
body = {
"display_name": _check_and_truncate_name(name),
"tags": [{"tag": tenant_id, "scope": "os_tid"},
{"tag": NEUTRON_VERSION, "scope": "quantum"}],
"routing_config": {
"type": router_type
},
"type": "LogicalRouterConfig"
}
# add the distributed key only if not None (ie: True or False)
if distributed is not None:
body['distributed'] = distributed
if kwargs:
body["routing_config"].update(kwargs)
return body
def _create_implicit_routing_lrouter(cluster, tenant_id,
display_name, nexthop,
distributed=None):
implicit_routing_config = {
"default_route_next_hop": {
"gateway_ip_address": nexthop,
"type": "RouterNextHop"
},
}
lrouter_obj = _prepare_lrouter_body(
display_name, tenant_id,
"SingleDefaultRouteImplicitRoutingConfig",
distributed=distributed,
**implicit_routing_config)
return do_request(HTTP_POST, _build_uri_path(LROUTER_RESOURCE),
json.dumps(lrouter_obj), cluster=cluster)
def create_implicit_routing_lrouter(cluster, tenant_id,
display_name, nexthop):
"""Create a NVP logical router on the specified cluster.
:param cluster: The target NVP cluster
:param tenant_id: Identifier of the Openstack tenant for which
the logical router is being created
:param display_name: Descriptive name of this logical router
:param nexthop: External gateway IP address for the logical router
:raise NvpApiException: if there is a problem while communicating
with the NVP controller
"""
return _create_implicit_routing_lrouter(
cluster, tenant_id, display_name, nexthop)
def create_implicit_routing_lrouter_with_distribution(
cluster, tenant_id, display_name, nexthop, distributed=None):
"""Create a NVP logical router on the specified cluster.
This function also allows for creating distributed lrouters
:param cluster: The target NVP cluster
:param tenant_id: Identifier of the Openstack tenant for which
the logical router is being created
:param display_name: Descriptive name of this logical router
:param nexthop: External gateway IP address for the logical router
:param distributed: True for distributed logical routers
:raise NvpApiException: if there is a problem while communicating
with the NVP controller
"""
return _create_implicit_routing_lrouter(
cluster, tenant_id, display_name, nexthop, distributed)
def create_explicit_routing_lrouter(cluster, tenant_id,
display_name, nexthop,
distributed=None):
lrouter_obj = _prepare_lrouter_body(
display_name, tenant_id, "RoutingTableRoutingConfig",
distributed=distributed)
router = do_request(HTTP_POST, _build_uri_path(LROUTER_RESOURCE),
json.dumps(lrouter_obj), cluster=cluster)
default_gw = {'prefix': '0.0.0.0/0', 'next_hop_ip': nexthop}
create_explicit_route_lrouter(cluster, router['uuid'], default_gw)
return router
@version_dependent
def create_lrouter(cluster, *args, **kwargs):
if kwargs.get('distributed', None):
v = cluster.api_client.get_nvp_version()
if (v.major < 3) or (v.major >= 3 and v.minor < 1):
raise nvp_exc.NvpInvalidVersion(version=v)
return v
def delete_lrouter(cluster, lrouter_id):
do_request(HTTP_DELETE, _build_uri_path(LROUTER_RESOURCE,
resource_id=lrouter_id),
cluster=cluster)
def delete_l2_gw_service(cluster, gateway_id):
do_request("DELETE", _build_uri_path(GWSERVICE_RESOURCE,
resource_id=gateway_id),
cluster=cluster)
def get_lrouter(cluster, lrouter_id):
return do_request(HTTP_GET,
_build_uri_path(LROUTER_RESOURCE,
resource_id=lrouter_id,
relations='LogicalRouterStatus'),
cluster=cluster)
def get_l2_gw_service(cluster, gateway_id):
return do_request(
"GET", _build_uri_path(GWSERVICE_RESOURCE,
resource_id=gateway_id),
cluster=cluster)
def get_lrouters(cluster, tenant_id, fields=None, filters=None):
actual_filters = {}
if filters:
actual_filters.update(filters)
if tenant_id:
actual_filters['tag'] = tenant_id
actual_filters['tag_scope'] = 'os_tid'
lrouter_fields = "uuid,display_name,fabric_status,tags"
return get_all_query_pages(
_build_uri_path(LROUTER_RESOURCE,
fields=lrouter_fields,
relations='LogicalRouterStatus',
filters=actual_filters),
cluster)
def get_l2_gw_services(cluster, tenant_id=None,
fields=None, filters=None):
actual_filters = dict(filters or {})
if tenant_id:
actual_filters['tag'] = tenant_id
actual_filters['tag_scope'] = 'os_tid'
return get_all_query_pages(
_build_uri_path(GWSERVICE_RESOURCE,
filters=actual_filters),
cluster)
def update_l2_gw_service(cluster, gateway_id, display_name):
# TODO(salvatore-orlando): Allow updates for gateways too
gwservice_obj = get_l2_gw_service(cluster, gateway_id)
if not display_name:
# Nothing to update
return gwservice_obj
gwservice_obj["display_name"] = _check_and_truncate_name(display_name)
return do_request("PUT", _build_uri_path(GWSERVICE_RESOURCE,
resource_id=gateway_id),
json.dumps(gwservice_obj), cluster=cluster)
def update_implicit_routing_lrouter(cluster, r_id, display_name, nexthop):
lrouter_obj = get_lrouter(cluster, r_id)
if not display_name and not nexthop:
# Nothing to update
return lrouter_obj
# It seems that this is faster than the doing an if on display_name
lrouter_obj["display_name"] = (_check_and_truncate_name(display_name) or
lrouter_obj["display_name"])
if nexthop:
nh_element = lrouter_obj["routing_config"].get(
"default_route_next_hop")
if nh_element:
nh_element["gateway_ip_address"] = nexthop
return do_request(HTTP_PUT, _build_uri_path(LROUTER_RESOURCE,
resource_id=r_id),
json.dumps(lrouter_obj),
cluster=cluster)
def get_explicit_routes_lrouter(cluster, router_id, protocol_type='static'):
static_filter = {'protocol': protocol_type}
existing_routes = do_request(
HTTP_GET,
_build_uri_path(LROUTERRIB_RESOURCE,
filters=static_filter,
fields="*",
parent_resource_id=router_id),
cluster=cluster)['results']
return existing_routes
def delete_explicit_route_lrouter(cluster, router_id, route_id):
do_request(HTTP_DELETE,
_build_uri_path(LROUTERRIB_RESOURCE,
resource_id=route_id,
parent_resource_id=router_id),
cluster=cluster)
def create_explicit_route_lrouter(cluster, router_id, route):
next_hop_ip = route.get("nexthop") or route.get("next_hop_ip")
prefix = route.get("destination") or route.get("prefix")
uuid = do_request(
HTTP_POST,
_build_uri_path(LROUTERRIB_RESOURCE,
parent_resource_id=router_id),
json.dumps({
"action": "accept",
"next_hop_ip": next_hop_ip,
"prefix": prefix,
"protocol": "static"
}),
cluster=cluster)['uuid']
return uuid
def update_explicit_routes_lrouter(cluster, router_id, routes):
# Update in bulk: delete them all, and add the ones specified
# but keep track of what is been modified to allow roll-backs
# in case of failures
nvp_routes = get_explicit_routes_lrouter(cluster, router_id)
try:
deleted_routes = []
added_routes = []
# omit the default route (0.0.0.0/0) from the processing;
# this must be handled through the nexthop for the router
for route in nvp_routes:
prefix = route.get("destination") or route.get("prefix")
if prefix != '0.0.0.0/0':
delete_explicit_route_lrouter(cluster,
router_id,
route['uuid'])
deleted_routes.append(route)
for route in routes:
prefix = route.get("destination") or route.get("prefix")
if prefix != '0.0.0.0/0':
uuid = create_explicit_route_lrouter(cluster,
router_id, route)
added_routes.append(uuid)
except NvpApiClient.NvpApiException:
LOG.exception(_('Cannot update NVP routes %(routes)s for '
'router %(router_id)s'),
{'routes': routes, 'router_id': router_id})
# Roll back to keep NVP in consistent state
with excutils.save_and_reraise_exception():
if nvp_routes:
if deleted_routes:
for route in deleted_routes:
create_explicit_route_lrouter(cluster,
router_id, route)
if added_routes:
for route_id in added_routes:
delete_explicit_route_lrouter(cluster,
router_id, route_id)
return nvp_routes
@version_dependent
def get_default_route_explicit_routing_lrouter(cluster, *args, **kwargs):
pass
def get_default_route_explicit_routing_lrouter_v33(cluster, router_id):
static_filter = {"protocol": "static",
"prefix": "0.0.0.0/0"}
default_route = do_request(
HTTP_GET,
_build_uri_path(LROUTERRIB_RESOURCE,
filters=static_filter,
fields="*",
parent_resource_id=router_id),
cluster=cluster)["results"][0]
return default_route
def get_default_route_explicit_routing_lrouter_v32(cluster, router_id):
# Scan all routes because 3.2 does not support query by prefix
all_routes = get_explicit_routes_lrouter(cluster, router_id)
for route in all_routes:
if route['prefix'] == '0.0.0.0/0':
return route
def update_default_gw_explicit_routing_lrouter(cluster, router_id, next_hop):
default_route = get_default_route_explicit_routing_lrouter(cluster,
router_id)
if next_hop != default_route["next_hop_ip"]:
new_default_route = {"action": "accept",
"next_hop_ip": next_hop,
"prefix": "0.0.0.0/0",
"protocol": "static"}
do_request(HTTP_PUT,
_build_uri_path(LROUTERRIB_RESOURCE,
resource_id=default_route['uuid'],
parent_resource_id=router_id),
json.dumps(new_default_route),
cluster=cluster)
def update_explicit_routing_lrouter(cluster, router_id,
display_name, next_hop, routes=None):
update_implicit_routing_lrouter(cluster, router_id, display_name, next_hop)
if next_hop:
update_default_gw_explicit_routing_lrouter(cluster,
router_id, next_hop)
if routes is not None:
return update_explicit_routes_lrouter(cluster, router_id, routes)
@version_dependent
def update_lrouter(cluster, *args, **kwargs):
if kwargs.get('routes', None):
v = cluster.api_client.get_nvp_version()
if (v.major < 3) or (v.major >= 3 and v.minor < 2):
raise nvp_exc.NvpInvalidVersion(version=v)
return v
def delete_network(cluster, net_id, lswitch_id):
delete_networks(cluster, net_id, [lswitch_id])
#TODO(salvatore-orlando): Simplify and harmonize
def delete_networks(cluster, net_id, lswitch_ids):
for ls_id in lswitch_ids:
path = "/ws.v1/lswitch/%s" % ls_id
try:
do_request(HTTP_DELETE, path, cluster=cluster)
except exception.NotFound as e:
LOG.error(_("Network not found, Error: %s"), str(e))
raise exception.NetworkNotFound(net_id=ls_id)
def query_lswitch_lports(cluster, ls_uuid, fields="*",
filters=None, relations=None):
# Fix filter for attachments
if filters and "attachment" in filters:
filters['attachment_vif_uuid'] = filters["attachment"]
del filters['attachment']
uri = _build_uri_path(LSWITCHPORT_RESOURCE, parent_resource_id=ls_uuid,
fields=fields, filters=filters, relations=relations)
return do_request(HTTP_GET, uri, cluster=cluster)['results']
def query_lrouter_lports(cluster, lr_uuid, fields="*",
filters=None, relations=None):
uri = _build_uri_path(LROUTERPORT_RESOURCE, parent_resource_id=lr_uuid,
fields=fields, filters=filters, relations=relations)
return do_request(HTTP_GET, uri, cluster=cluster)['results']
def delete_port(cluster, switch, port):
uri = "/ws.v1/lswitch/" + switch + "/lport/" + port
try:
do_request(HTTP_DELETE, uri, cluster=cluster)
except exception.NotFound:
LOG.exception(_("Port or Network not found"))
raise exception.PortNotFoundOnNetwork(
net_id=switch, port_id=port)
except NvpApiClient.NvpApiException:
raise exception.NeutronException()
def get_port_by_neutron_tag(cluster, lswitch_uuid, neutron_port_id):
"""Get port by neutron tag.
Returns the NVP UUID of the logical port with tag q_port_id equal to
neutron_port_id or None if the port is not Found.
"""
uri = _build_uri_path(LSWITCHPORT_RESOURCE,
parent_resource_id=lswitch_uuid,
fields='uuid',
filters={'tag': neutron_port_id,
'tag_scope': 'q_port_id'})
LOG.debug(_("Looking for port with q_port_id tag '%(neutron_port_id)s' "
"on: '%(lswitch_uuid)s'"),
{'neutron_port_id': neutron_port_id,
'lswitch_uuid': lswitch_uuid})
res = do_request(HTTP_GET, uri, cluster=cluster)
num_results = len(res["results"])
if num_results >= 1:
if num_results > 1:
LOG.warn(_("Found '%(num_ports)d' ports with "
"q_port_id tag: '%(neutron_port_id)s'. "
"Only 1 was expected."),
{'num_ports': num_results,
'neutron_port_id': neutron_port_id})
return res["results"][0]
def get_port(cluster, network, port, relations=None):
LOG.info(_("get_port() %(network)s %(port)s"),
{'network': network, 'port': port})
uri = "/ws.v1/lswitch/" + network + "/lport/" + port + "?"
if relations:
uri += "relations=%s" % relations
try:
return do_request(HTTP_GET, uri, cluster=cluster)
except exception.NotFound as e:
LOG.error(_("Port or Network not found, Error: %s"), str(e))
raise exception.PortNotFoundOnNetwork(
port_id=port, net_id=network)
def _configure_extensions(lport_obj, mac_address, fixed_ips,
port_security_enabled, security_profiles,
queue_id, mac_learning_enabled,
allowed_address_pairs):
lport_obj['allowed_address_pairs'] = []
if port_security_enabled:
for fixed_ip in fixed_ips:
ip_address = fixed_ip.get('ip_address')
if ip_address:
lport_obj['allowed_address_pairs'].append(
{'mac_address': mac_address, 'ip_address': ip_address})
# add address pair allowing src_ip 0.0.0.0 to leave
# this is required for outgoing dhcp request
lport_obj["allowed_address_pairs"].append(
{"mac_address": mac_address,
"ip_address": "0.0.0.0"})
lport_obj['security_profiles'] = list(security_profiles or [])
lport_obj['queue_uuid'] = queue_id
if mac_learning_enabled is not None:
lport_obj["mac_learning"] = mac_learning_enabled
lport_obj["type"] = "LogicalSwitchPortConfig"
for address_pair in list(allowed_address_pairs or []):
lport_obj['allowed_address_pairs'].append(
{'mac_address': address_pair['mac_address'],
'ip_address': address_pair['ip_address']})
def update_port(cluster, lswitch_uuid, lport_uuid, neutron_port_id, tenant_id,
display_name, device_id, admin_status_enabled,
mac_address=None, fixed_ips=None, port_security_enabled=None,
security_profiles=None, queue_id=None,
mac_learning_enabled=None, allowed_address_pairs=None):
# device_id can be longer than 40 so we rehash it
hashed_device_id = hashlib.sha1(device_id).hexdigest()
lport_obj = dict(
admin_status_enabled=admin_status_enabled,
display_name=_check_and_truncate_name(display_name),
tags=[dict(scope='os_tid', tag=tenant_id),
dict(scope='q_port_id', tag=neutron_port_id),
dict(scope='vm_id', tag=hashed_device_id),
dict(scope='quantum', tag=NEUTRON_VERSION)])
_configure_extensions(lport_obj, mac_address, fixed_ips,
port_security_enabled, security_profiles,
queue_id, mac_learning_enabled,
allowed_address_pairs)
path = "/ws.v1/lswitch/" + lswitch_uuid + "/lport/" + lport_uuid
try:
result = do_request(HTTP_PUT, path, json.dumps(lport_obj),
cluster=cluster)
LOG.debug(_("Updated logical port %(result)s "
"on logical switch %(uuid)s"),
{'result': result['uuid'], 'uuid': lswitch_uuid})
return result
except exception.NotFound as e:
LOG.error(_("Port or Network not found, Error: %s"), str(e))
raise exception.PortNotFoundOnNetwork(
port_id=lport_uuid, net_id=lswitch_uuid)
def create_lport(cluster, lswitch_uuid, tenant_id, neutron_port_id,
display_name, device_id, admin_status_enabled,
mac_address=None, fixed_ips=None, port_security_enabled=None,
security_profiles=None, queue_id=None,
mac_learning_enabled=None, allowed_address_pairs=None):
"""Creates a logical port on the assigned logical switch."""
# device_id can be longer than 40 so we rehash it
hashed_device_id = hashlib.sha1(device_id).hexdigest()
display_name = _check_and_truncate_name(display_name)
lport_obj = dict(
admin_status_enabled=admin_status_enabled,
display_name=display_name,
tags=[dict(scope='os_tid', tag=tenant_id),
dict(scope='q_port_id', tag=neutron_port_id),
dict(scope='vm_id', tag=hashed_device_id),
dict(scope='quantum', tag=NEUTRON_VERSION)],
)
_configure_extensions(lport_obj, mac_address, fixed_ips,
port_security_enabled, security_profiles,
queue_id, mac_learning_enabled,
allowed_address_pairs)
path = _build_uri_path(LSWITCHPORT_RESOURCE,
parent_resource_id=lswitch_uuid)
result = do_request(HTTP_POST, path, json.dumps(lport_obj),
cluster=cluster)
LOG.debug(_("Created logical port %(result)s on logical switch %(uuid)s"),
{'result': result['uuid'], 'uuid': lswitch_uuid})
return result
def create_router_lport(cluster, lrouter_uuid, tenant_id, neutron_port_id,
display_name, admin_status_enabled, ip_addresses):
"""Creates a logical port on the assigned logical router."""
tags = [dict(scope='os_tid', tag=tenant_id),
dict(scope='q_port_id', tag=neutron_port_id),
dict(scope='quantum', tag=NEUTRON_VERSION)]
lport_obj = dict(
admin_status_enabled=admin_status_enabled,
display_name=display_name,
tags=tags,
ip_addresses=ip_addresses,
type="LogicalRouterPortConfig"
)
path = _build_uri_path(LROUTERPORT_RESOURCE,
parent_resource_id=lrouter_uuid)
result = do_request(HTTP_POST, path, json.dumps(lport_obj),
cluster=cluster)
LOG.debug(_("Created logical port %(lport_uuid)s on "
"logical router %(lrouter_uuid)s"),
{'lport_uuid': result['uuid'],
'lrouter_uuid': lrouter_uuid})
return result
def update_router_lport(cluster, lrouter_uuid, lrouter_port_uuid,
tenant_id, neutron_port_id, display_name,
admin_status_enabled, ip_addresses):
"""Updates a logical port on the assigned logical router."""
lport_obj = dict(
admin_status_enabled=admin_status_enabled,
display_name=display_name,
tags=[dict(scope='os_tid', tag=tenant_id),
dict(scope='q_port_id', tag=neutron_port_id),
dict(scope='quantum', tag=NEUTRON_VERSION)],
ip_addresses=ip_addresses,
type="LogicalRouterPortConfig"
)
# Do not pass null items to NVP
for key in lport_obj.keys():
if lport_obj[key] is None:
del lport_obj[key]
path = _build_uri_path(LROUTERPORT_RESOURCE,
lrouter_port_uuid,
parent_resource_id=lrouter_uuid)
result = do_request(HTTP_PUT, path,
json.dumps(lport_obj),
cluster=cluster)
LOG.debug(_("Updated logical port %(lport_uuid)s on "
"logical router %(lrouter_uuid)s"),
{'lport_uuid': lrouter_port_uuid, 'lrouter_uuid': lrouter_uuid})
return result
def delete_router_lport(cluster, lrouter_uuid, lport_uuid):
"""Creates a logical port on the assigned logical router."""
path = _build_uri_path(LROUTERPORT_RESOURCE, lport_uuid, lrouter_uuid)
do_request(HTTP_DELETE, path, cluster=cluster)
LOG.debug(_("Delete logical router port %(lport_uuid)s on "
"logical router %(lrouter_uuid)s"),
{'lport_uuid': lport_uuid,
'lrouter_uuid': lrouter_uuid})
def delete_peer_router_lport(cluster, lr_uuid, ls_uuid, lp_uuid):
nvp_port = get_port(cluster, ls_uuid, lp_uuid,
relations="LogicalPortAttachment")
relations = nvp_port.get('_relations')
if relations:
att_data = relations.get('LogicalPortAttachment')
if att_data:
lrp_uuid = att_data.get('peer_port_uuid')
if lrp_uuid:
delete_router_lport(cluster, lr_uuid, lrp_uuid)
def find_router_gw_port(context, cluster, router_id):
"""Retrieves the external gateway port for a NVP logical router."""
# Find the uuid of nvp ext gw logical router port
# TODO(salvatore-orlando): Consider storing it in Neutron DB
results = query_lrouter_lports(
cluster, router_id,
relations="LogicalPortAttachment")
for lport in results:
if '_relations' in lport:
attachment = lport['_relations'].get('LogicalPortAttachment')
if attachment and attachment.get('type') == 'L3GatewayAttachment':
return lport
def plug_router_port_attachment(cluster, router_id, port_id,
attachment_uuid, nvp_attachment_type,
attachment_vlan=None):
"""Attach a router port to the given attachment.
Current attachment types:
- PatchAttachment [-> logical switch port uuid]
- L3GatewayAttachment [-> L3GatewayService uuid]
For the latter attachment type a VLAN ID can be specified as well.
"""
uri = _build_uri_path(LROUTERPORT_RESOURCE, port_id, router_id,
is_attachment=True)
attach_obj = {}
attach_obj["type"] = nvp_attachment_type
if nvp_attachment_type == "PatchAttachment":
attach_obj["peer_port_uuid"] = attachment_uuid
elif nvp_attachment_type == "L3GatewayAttachment":
attach_obj["l3_gateway_service_uuid"] = attachment_uuid
if attachment_vlan:
attach_obj['vlan_id'] = attachment_vlan
else:
raise nvp_exc.NvpInvalidAttachmentType(
attachment_type=nvp_attachment_type)
return do_request(HTTP_PUT, uri, json.dumps(attach_obj), cluster=cluster)
def get_port_status(cluster, lswitch_id, port_id):
"""Retrieve the operational status of the port."""
try:
r = do_request(HTTP_GET,
"/ws.v1/lswitch/%s/lport/%s/status" %
(lswitch_id, port_id), cluster=cluster)
except exception.NotFound as e:
LOG.error(_("Port not found, Error: %s"), str(e))
raise exception.PortNotFoundOnNetwork(
port_id=port_id, net_id=lswitch_id)
if r['link_status_up'] is True:
return constants.PORT_STATUS_ACTIVE
else:
return constants.PORT_STATUS_DOWN
def _plug_interface(cluster, lswitch_id, lport_id, att_obj):
uri = _build_uri_path(LSWITCHPORT_RESOURCE, lport_id, lswitch_id,
is_attachment=True)
return do_request(HTTP_PUT, uri, json.dumps(att_obj),
cluster=cluster)
def plug_l2_gw_service(cluster, lswitch_id, lport_id,
gateway_id, vlan_id=None):
"""Plug a Layer-2 Gateway Attachment object in a logical port."""
att_obj = {'type': 'L2GatewayAttachment',
'l2_gateway_service_uuid': gateway_id}
if vlan_id:
att_obj['vlan_id'] = vlan_id
return _plug_interface(cluster, lswitch_id, lport_id, att_obj)
def plug_interface(cluster, lswitch_id, port, type, attachment=None):
"""Plug a VIF Attachment object in a logical port."""
lport_obj = {}
if attachment:
lport_obj["vif_uuid"] = attachment
lport_obj["type"] = type
return _plug_interface(cluster, lswitch_id, port, lport_obj)
#------------------------------------------------------------------------------
# Security Profile convenience functions.
#------------------------------------------------------------------------------
EXT_SECURITY_PROFILE_ID_SCOPE = 'nova_spid'
TENANT_ID_SCOPE = 'os_tid'
def format_exception(etype, e, exception_locals):
"""Consistent formatting for exceptions.
:param etype: a string describing the exception type.
:param e: the exception.
:param execption_locals: calling context local variable dict.
:returns: a formatted string.
"""
msg = [_("Error. %(type)s exception: %(exc)s.") %
{'type': etype, 'exc': e}]
l = dict((k, v) for k, v in exception_locals.iteritems()
if k != 'request')
msg.append(_("locals=[%s]") % str(l))
return ' '.join(msg)
def do_request(*args, **kwargs):
"""Issue a request to the cluster specified in kwargs.
:param args: a list of positional arguments.
:param kwargs: a list of keyworkds arguments.
:returns: the result of the operation loaded into a python
object or None.
"""
cluster = kwargs["cluster"]
try:
res = cluster.api_client.request(*args)
if res:
return json.loads(res)
except NvpApiClient.ResourceNotFound:
raise exception.NotFound()
except NvpApiClient.ReadOnlyMode:
raise nvp_exc.MaintenanceInProgress()
def mk_body(**kwargs):
"""Convenience function creates and dumps dictionary to string.
:param kwargs: the key/value pirs to be dumped into a json string.
:returns: a json string.
"""
return json.dumps(kwargs, ensure_ascii=False)
# -----------------------------------------------------------------------------
# Security Group API Calls
# -----------------------------------------------------------------------------
def create_security_profile(cluster, tenant_id, security_profile):
path = "/ws.v1/security-profile"
# Allow all dhcp responses and all ingress traffic
hidden_rules = {'logical_port_egress_rules':
[{'ethertype': 'IPv4',
'protocol': constants.UDP_PROTOCOL,
'port_range_min': constants.DHCP_RESPONSE_PORT,
'port_range_max': constants.DHCP_RESPONSE_PORT,
'ip_prefix': '0.0.0.0/0'}],
'logical_port_ingress_rules':
[{'ethertype': 'IPv4'},
{'ethertype': 'IPv6'}]}
tags = [dict(scope='os_tid', tag=tenant_id),
dict(scope='quantum', tag=NEUTRON_VERSION)]
display_name = _check_and_truncate_name(security_profile.get('name'))
body = mk_body(
tags=tags, display_name=display_name,
logical_port_ingress_rules=(
hidden_rules['logical_port_ingress_rules']),
logical_port_egress_rules=hidden_rules['logical_port_egress_rules']
)
rsp = do_request(HTTP_POST, path, body, cluster=cluster)
if security_profile.get('name') == 'default':
# If security group is default allow ip traffic between
# members of the same security profile is allowed and ingress traffic
# from the switch
rules = {'logical_port_egress_rules': [{'ethertype': 'IPv4',
'profile_uuid': rsp['uuid']},
{'ethertype': 'IPv6',
'profile_uuid': rsp['uuid']}],
'logical_port_ingress_rules': [{'ethertype': 'IPv4'},
{'ethertype': 'IPv6'}]}
update_security_group_rules(cluster, rsp['uuid'], rules)
LOG.debug(_("Created Security Profile: %s"), rsp)
return rsp
def update_security_group_rules(cluster, spid, rules):
path = "/ws.v1/security-profile/%s" % spid
# Allow all dhcp responses in
rules['logical_port_egress_rules'].append(
{'ethertype': 'IPv4', 'protocol': constants.UDP_PROTOCOL,
'port_range_min': constants.DHCP_RESPONSE_PORT,
'port_range_max': constants.DHCP_RESPONSE_PORT,
'ip_prefix': '0.0.0.0/0'})
# If there are no ingress rules add bunk rule to drop all ingress traffic
if not rules['logical_port_ingress_rules']:
rules['logical_port_ingress_rules'].append(
{'ethertype': 'IPv4', 'ip_prefix': '127.0.0.1/32'})
try:
body = mk_body(
logical_port_ingress_rules=rules['logical_port_ingress_rules'],
logical_port_egress_rules=rules['logical_port_egress_rules'])
rsp = do_request(HTTP_PUT, path, body, cluster=cluster)
except exception.NotFound as e:
LOG.error(format_exception("Unknown", e, locals()))
#FIXME(salvatore-orlando): This should not raise NeutronException
raise exception.NeutronException()
LOG.debug(_("Updated Security Profile: %s"), rsp)
return rsp
def delete_security_profile(cluster, spid):
path = "/ws.v1/security-profile/%s" % spid
try:
do_request(HTTP_DELETE, path, cluster=cluster)
except exception.NotFound as e:
# FIXME(salv-orlando): should not raise NeutronException
LOG.error(format_exception("Unknown", e, locals()))
raise exception.NeutronException()
def _create_nat_match_obj(**kwargs):
nat_match_obj = {'ethertype': 'IPv4'}
delta = set(kwargs.keys()) - set(MATCH_KEYS)
if delta:
raise Exception(_("Invalid keys for NAT match: %s"), delta)
nat_match_obj.update(kwargs)
return nat_match_obj
def _create_lrouter_nat_rule(cluster, router_id, nat_rule_obj):
LOG.debug(_("Creating NAT rule: %s"), nat_rule_obj)
uri = _build_uri_path(LROUTERNAT_RESOURCE, parent_resource_id=router_id)
return do_request(HTTP_POST, uri, json.dumps(nat_rule_obj),
cluster=cluster)
def _build_snat_rule_obj(min_src_ip, max_src_ip, nat_match_obj):
return {"to_source_ip_address_min": min_src_ip,
"to_source_ip_address_max": max_src_ip,
"type": "SourceNatRule",
"match": nat_match_obj}
def create_lrouter_nosnat_rule_v2(cluster, _router_id, _match_criteria=None):
LOG.info(_("No SNAT rules cannot be applied as they are not available in "
"this version of the NVP platform"))
def create_lrouter_snat_rule_v2(cluster, router_id,
min_src_ip, max_src_ip, match_criteria=None):
nat_match_obj = _create_nat_match_obj(**match_criteria)
nat_rule_obj = _build_snat_rule_obj(min_src_ip, max_src_ip, nat_match_obj)
return _create_lrouter_nat_rule(cluster, router_id, nat_rule_obj)
def create_lrouter_dnat_rule_v2(cluster, router_id, dst_ip,
to_dst_port=None, match_criteria=None):
nat_match_obj = _create_nat_match_obj(**match_criteria)
nat_rule_obj = {
"to_destination_ip_address_min": dst_ip,
"to_destination_ip_address_max": dst_ip,
"type": "DestinationNatRule",
"match": nat_match_obj
}
if to_dst_port:
nat_rule_obj['to_destination_port'] = to_dst_port
return _create_lrouter_nat_rule(cluster, router_id, nat_rule_obj)
def create_lrouter_nosnat_rule_v3(cluster, router_id, order=None,
match_criteria=None):
nat_match_obj = _create_nat_match_obj(**match_criteria)
nat_rule_obj = {
"type": "NoSourceNatRule",
"match": nat_match_obj
}
if order:
nat_rule_obj['order'] = order
return _create_lrouter_nat_rule(cluster, router_id, nat_rule_obj)
def create_lrouter_snat_rule_v3(cluster, router_id, min_src_ip, max_src_ip,
order=None, match_criteria=None):
nat_match_obj = _create_nat_match_obj(**match_criteria)
nat_rule_obj = _build_snat_rule_obj(min_src_ip, max_src_ip, nat_match_obj)
if order:
nat_rule_obj['order'] = order
return _create_lrouter_nat_rule(cluster, router_id, nat_rule_obj)
def create_lrouter_dnat_rule_v3(cluster, router_id, dst_ip, to_dst_port=None,
order=None, match_criteria=None):
nat_match_obj = _create_nat_match_obj(**match_criteria)
nat_rule_obj = {
"to_destination_ip_address": dst_ip,
"type": "DestinationNatRule",
"match": nat_match_obj
}
if to_dst_port:
nat_rule_obj['to_destination_port'] = to_dst_port
if order:
nat_rule_obj['order'] = order
return _create_lrouter_nat_rule(cluster, router_id, nat_rule_obj)
@version_dependent
def create_lrouter_dnat_rule(cluster, *args, **kwargs):
pass
@version_dependent
def create_lrouter_snat_rule(cluster, *args, **kwargs):
pass
@version_dependent
def create_lrouter_nosnat_rule(cluster, *args, **kwargs):
pass
def delete_nat_rules_by_match(cluster, router_id, rule_type,
max_num_expected,
min_num_expected=0,
**kwargs):
# remove nat rules
nat_rules = query_nat_rules(cluster, router_id)
to_delete_ids = []
for r in nat_rules:
if (r['type'] != rule_type):
continue
for key, value in kwargs.iteritems():
if not (key in r['match'] and r['match'][key] == value):
break
else:
to_delete_ids.append(r['uuid'])
if not (len(to_delete_ids) in
range(min_num_expected, max_num_expected + 1)):
raise nvp_exc.NvpNatRuleMismatch(actual_rules=len(to_delete_ids),
min_rules=min_num_expected,
max_rules=max_num_expected)
for rule_id in to_delete_ids:
delete_router_nat_rule(cluster, router_id, rule_id)
def delete_router_nat_rule(cluster, router_id, rule_id):
uri = _build_uri_path(LROUTERNAT_RESOURCE, rule_id, router_id)
do_request(HTTP_DELETE, uri, cluster=cluster)
def query_nat_rules(cluster, router_id, fields="*", filters=None):
uri = _build_uri_path(LROUTERNAT_RESOURCE, parent_resource_id=router_id,
fields=fields, filters=filters)
return get_all_query_pages(uri, cluster)
# NOTE(salvatore-orlando): The following FIXME applies in general to
# each operation on list attributes.
# FIXME(salvatore-orlando): need a lock around the list of IPs on an iface
def update_lrouter_port_ips(cluster, lrouter_id, lport_id,
ips_to_add, ips_to_remove):
uri = _build_uri_path(LROUTERPORT_RESOURCE, lport_id, lrouter_id)
try:
port = do_request(HTTP_GET, uri, cluster=cluster)
# TODO(salvatore-orlando): Enforce ips_to_add intersection with
# ips_to_remove is empty
ip_address_set = set(port['ip_addresses'])
ip_address_set = ip_address_set - set(ips_to_remove)
ip_address_set = ip_address_set | set(ips_to_add)
# Set is not JSON serializable - convert to list
port['ip_addresses'] = list(ip_address_set)
do_request(HTTP_PUT, uri, json.dumps(port), cluster=cluster)
except exception.NotFound as e:
# FIXME(salv-orlando):avoid raising different exception
data = {'lport_id': lport_id, 'lrouter_id': lrouter_id}
msg = (_("Router Port %(lport_id)s not found on router "
"%(lrouter_id)s") % data)
LOG.exception(msg)
raise nvp_exc.NvpPluginException(err_msg=msg)
except NvpApiClient.NvpApiException as e:
msg = _("An exception occurred while updating IP addresses on a "
"router logical port:%s") % str(e)
LOG.exception(msg)
raise nvp_exc.NvpPluginException(err_msg=msg)
DEFAULT = -1
NVPLIB_FUNC_DICT = {
'create_lrouter': {
2: {DEFAULT: create_implicit_routing_lrouter, },
3: {DEFAULT: create_implicit_routing_lrouter,
1: create_implicit_routing_lrouter_with_distribution,
2: create_explicit_routing_lrouter, }, },
'update_lrouter': {
2: {DEFAULT: update_implicit_routing_lrouter, },
3: {DEFAULT: update_implicit_routing_lrouter,
2: update_explicit_routing_lrouter, }, },
'create_lrouter_dnat_rule': {
2: {DEFAULT: create_lrouter_dnat_rule_v2, },
3: {DEFAULT: create_lrouter_dnat_rule_v3, }, },
'create_lrouter_snat_rule': {
2: {DEFAULT: create_lrouter_snat_rule_v2, },
3: {DEFAULT: create_lrouter_snat_rule_v3, }, },
'create_lrouter_nosnat_rule': {
2: {DEFAULT: create_lrouter_nosnat_rule_v2, },
3: {DEFAULT: create_lrouter_nosnat_rule_v3, }, },
'get_default_route_explicit_routing_lrouter': {
3: {DEFAULT: get_default_route_explicit_routing_lrouter_v32,
2: get_default_route_explicit_routing_lrouter_v32, }, },
}
def get_function_by_version(func_name, nvp_ver):
if nvp_ver:
if nvp_ver.major not in NVPLIB_FUNC_DICT[func_name]:
major = max(NVPLIB_FUNC_DICT[func_name].keys())
minor = max(NVPLIB_FUNC_DICT[func_name][major].keys())
if major > nvp_ver.major:
raise NotImplementedError(_("Operation may not be supported"))
else:
major = nvp_ver.major
minor = nvp_ver.minor
if nvp_ver.minor not in NVPLIB_FUNC_DICT[func_name][major]:
minor = DEFAULT
return NVPLIB_FUNC_DICT[func_name][major][minor]
else:
msg = _('NVP version is not set. Unable to complete request '
'correctly. Check log for NVP communication errors.')
raise NvpApiClient.ServiceUnavailable(message=msg)
# -----------------------------------------------------------------------------
# QOS API Calls
# -----------------------------------------------------------------------------
def create_lqueue(cluster, lqueue):
uri = _build_uri_path(LQUEUE_RESOURCE)
lqueue['tags'] = [{'tag': NEUTRON_VERSION, 'scope': 'quantum'}]
try:
return do_request(HTTP_POST, uri, json.dumps(lqueue),
cluster=cluster)['uuid']
except NvpApiClient.NvpApiException:
# FIXME(salv-orlando): This should not raise QauntumException
LOG.exception(_("Failed to create logical queue"))
raise exception.NeutronException()
def delete_lqueue(cluster, id):
try:
do_request(HTTP_DELETE, _build_uri_path(LQUEUE_RESOURCE,
resource_id=id),
cluster=cluster)
except Exception:
# FIXME(salv-orlando): This should not raise QauntumException
LOG.exception(_("Failed to delete logical queue"))
raise exception.NeutronException()
# -----------------------------------------------------------------------------
# NVP API Calls for check_nvp_config utility
# -----------------------------------------------------------------------------
def config_helper(http_method, http_uri, cluster):
try:
return do_request(http_method,
http_uri,
cluster=cluster)
except Exception as e:
msg = (_("Error '%(err)s' when connecting to controller(s): %(ctl)s.")
% {'err': str(e), 'ctl': ', '.join(cluster.nvp_controllers)})
raise Exception(msg)
def check_cluster_connectivity(cluster):
"""Make sure that we can issue a request to each of the cluster nodes."""
return config_helper(HTTP_GET,
"/ws.v1/control-cluster",
cluster)
def get_gateway_services(cluster):
return config_helper(HTTP_GET,
"/ws.v1/gateway-service?fields=uuid",
cluster)
def get_transport_zones(cluster):
return config_helper(HTTP_GET,
"/ws.v1/transport-zone?fields=uuid",
cluster)
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