227 lines
7.8 KiB
Python
227 lines
7.8 KiB
Python
# Copyright (c) 2013 Hortonworks, Inc.
|
|
#
|
|
# 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.
|
|
|
|
import os
|
|
import shlex
|
|
|
|
from eventlet.green import subprocess as e_subprocess
|
|
from neutronclient.neutron import client as neutron_cli
|
|
import requests
|
|
from requests import adapters
|
|
|
|
from sahara import context
|
|
from sahara import exceptions as ex
|
|
from sahara.i18n import _
|
|
from sahara.openstack.common import log as logging
|
|
from sahara.utils.openstack import base
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def client():
|
|
ctx = context.ctx()
|
|
args = {
|
|
'username': ctx.username,
|
|
'tenant_name': ctx.tenant_name,
|
|
'tenant_id': ctx.tenant_id,
|
|
'token': ctx.token,
|
|
'endpoint_url': base.url_for(ctx.service_catalog, 'network')
|
|
}
|
|
return neutron_cli.Client('2.0', **args)
|
|
|
|
|
|
class NeutronClientRemoteWrapper():
|
|
neutron = None
|
|
adapters = {}
|
|
routers = {}
|
|
|
|
def __init__(self, network, uri, token, tenant_name):
|
|
self.neutron = neutron_cli.Client('2.0',
|
|
endpoint_url=uri,
|
|
token=token,
|
|
tenant_name=tenant_name)
|
|
self.network = network
|
|
|
|
def get_router(self):
|
|
matching_router = NeutronClientRemoteWrapper.routers.get(self.network,
|
|
None)
|
|
if matching_router:
|
|
LOG.debug('Returning cached qrouter')
|
|
return matching_router['id']
|
|
|
|
routers = self.neutron.list_routers()['routers']
|
|
for router in routers:
|
|
device_id = router['id']
|
|
ports = self.neutron.list_ports(device_id=device_id)['ports']
|
|
port = next((port for port in ports
|
|
if port['network_id'] == self.network), None)
|
|
if port:
|
|
matching_router = router
|
|
NeutronClientRemoteWrapper.routers[
|
|
self.network] = matching_router
|
|
break
|
|
|
|
if not matching_router:
|
|
raise ex.SystemError(_('Neutron router corresponding to network '
|
|
'%s is not found') % self.network)
|
|
|
|
return matching_router['id']
|
|
|
|
def get_http_session(self, host, port=None, use_rootwrap=False,
|
|
rootwrap_command=None, *args, **kwargs):
|
|
session = requests.Session()
|
|
adapters = self._get_adapters(host, port=port,
|
|
use_rootwrap=use_rootwrap,
|
|
rootwrap_command=rootwrap_command,
|
|
*args, **kwargs)
|
|
for adapter in adapters:
|
|
session.mount('http://{0}:{1}'.format(host, adapter.port), adapter)
|
|
|
|
return session
|
|
|
|
def _get_adapters(self, host, port=None, use_rootwrap=False,
|
|
rootwrap_command=None, *args, **kwargs):
|
|
LOG.debug('Retrieving neutron adapters for {0}:{1}'.format(host, port))
|
|
adapters = []
|
|
if not port:
|
|
# returning all registered adapters for given host
|
|
adapters = [adapter for adapter in self.adapters
|
|
if adapter.host == host]
|
|
else:
|
|
# need to retrieve or create specific adapter
|
|
adapter = self.adapters.get((host, port), None, *args, **kwargs)
|
|
if not adapter:
|
|
LOG.debug('Creating neutron adapter for {0}:{1}'
|
|
.format(host, port))
|
|
qrouter = self.get_router()
|
|
adapter = (
|
|
NeutronHttpAdapter(qrouter, host, port,
|
|
use_rootwrap=use_rootwrap,
|
|
rootwrap_command=rootwrap_command))
|
|
self.adapters[(host, port)] = adapter
|
|
adapters = [adapter]
|
|
|
|
return adapters
|
|
|
|
|
|
class NeutronHttpAdapter(adapters.HTTPAdapter):
|
|
port = None
|
|
host = None
|
|
|
|
def __init__(self, qrouter, host, port, use_rootwrap=False,
|
|
rootwrap_command=None, *args, **kwargs):
|
|
super(NeutronHttpAdapter, self).__init__(*args, **kwargs)
|
|
command = '{0} ip netns exec qrouter-{1} nc {2} {3}'.format(
|
|
rootwrap_command if use_rootwrap else '',
|
|
qrouter, host, port)
|
|
LOG.debug('Neutron adapter created with cmd {0}'.format(command))
|
|
self.cmd = shlex.split(command)
|
|
self.port = port
|
|
self.host = host
|
|
self.rootwrap_command = rootwrap_command if use_rootwrap else None
|
|
|
|
def get_connection(self, url, proxies=None):
|
|
pool_conn = (
|
|
super(NeutronHttpAdapter, self).get_connection(url, proxies))
|
|
if hasattr(pool_conn, '_get_conn'):
|
|
http_conn = pool_conn._get_conn()
|
|
if http_conn.sock is None:
|
|
if hasattr(http_conn, 'connect'):
|
|
sock = self._connect()
|
|
LOG.debug('HTTP connecction {0} getting new '
|
|
'netcat socket {1}'.format(http_conn, sock))
|
|
http_conn.sock = sock
|
|
else:
|
|
if hasattr(http_conn.sock, 'is_netcat_socket'):
|
|
LOG.debug('pooled http connection has existing '
|
|
'netcat socket. resetting pipe...')
|
|
http_conn.sock.reset()
|
|
|
|
pool_conn._put_conn(http_conn)
|
|
|
|
return pool_conn
|
|
|
|
def close(self):
|
|
LOG.debug('Closing neutron adapter for {0}:{1}'
|
|
.format(self.host, self.port))
|
|
super(NeutronHttpAdapter, self).close()
|
|
|
|
def _connect(self):
|
|
LOG.debug('returning netcat socket with command {0}'
|
|
.format(self.cmd))
|
|
return NetcatSocket(self.cmd, rootwrap_command=self.rootwrap_command)
|
|
|
|
|
|
class NetcatSocket:
|
|
|
|
def _create_process(self):
|
|
self.process = e_subprocess.Popen(self.cmd,
|
|
stdin=e_subprocess.PIPE,
|
|
stdout=e_subprocess.PIPE,
|
|
stderr=e_subprocess.PIPE)
|
|
|
|
def __init__(self, cmd, rootwrap_command=None):
|
|
self.cmd = cmd
|
|
self.rootwrap_command = rootwrap_command
|
|
self._create_process()
|
|
|
|
def send(self, content):
|
|
try:
|
|
self.process.stdin.write(content)
|
|
except IOError as e:
|
|
raise ex.SystemError(e)
|
|
return len(content)
|
|
|
|
def sendall(self, content):
|
|
return self.send(content)
|
|
|
|
def makefile(self, mode, *arg):
|
|
if mode.startswith('r'):
|
|
return self.process.stdout
|
|
if mode.startswith('w'):
|
|
return self.process.stdin
|
|
raise ex.IncorrectStateError(_("Unknown file mode %s") % mode)
|
|
|
|
def recv(self, size):
|
|
try:
|
|
return os.read(self.process.stdout.fileno(), size)
|
|
except IOError as e:
|
|
raise ex.SystemError(e)
|
|
|
|
def _terminate(self):
|
|
if self.rootwrap_command:
|
|
os.system('{0} kill {1}'.format(self.rootwrap_command,
|
|
self.process.pid))
|
|
else:
|
|
self.process.terminate()
|
|
|
|
def close(self):
|
|
LOG.debug('Socket close called')
|
|
self._terminate()
|
|
|
|
def settimeout(self, timeout):
|
|
pass
|
|
|
|
def fileno(self):
|
|
return self.process.stdin.fileno()
|
|
|
|
def is_netcat_socket(self):
|
|
return True
|
|
|
|
def reset(self):
|
|
self._terminate()
|
|
self._create_process()
|