def consume_in_thread(self):
"""Runs the ZmqProxy service."""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
try:
os.makedirs(ipc_dir)
except os.error:
if not os.path.isdir(ipc_dir):
with excutils.save_and_reraise_exception():
LOG.error(
_("Required IPC directory does not exist at"
" %s") % (ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL,
out_bind=True)
except zmq.ZMQError:
if os.access(ipc_dir, os.X_OK):
with excutils.save_and_reraise_exception():
LOG.error(
_("Permission denied to IPC directory at"
" %s") % (ipc_dir, ))
with excutils.save_and_reraise_exception():
LOG.error(
_("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def consume_in_thread(self):
"""Runs the ZmqProxy service"""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
if not os.path.isdir(ipc_dir):
try:
utils.execute('mkdir', '-p', ipc_dir, run_as_root=True)
utils.execute('chown',
"%s:%s" % (os.getuid(), os.getgid()),
ipc_dir,
run_as_root=True)
utils.execute('chmod', '750', ipc_dir, run_as_root=True)
except utils.ProcessExecutionError:
with excutils.save_and_reraise_exception():
LOG.error(
_("Could not create IPC directory %s") % (ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL,
out_bind=True)
except zmq.ZMQError:
with excutils.save_and_reraise_exception():
LOG.error(
_("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def consume_in_thread(self):
"""Runs the ZmqProxy service"""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
if not os.path.isdir(ipc_dir):
try:
utils.execute('mkdir', '-p', ipc_dir, run_as_root=True)
utils.execute('chown', "%s:%s" % (os.getuid(), os.getgid()),
ipc_dir, run_as_root=True)
utils.execute('chmod', '750', ipc_dir, run_as_root=True)
except utils.ProcessExecutionError:
with excutils.save_and_reraise_exception():
LOG.error(_("Could not create IPC directory %s") %
(ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL,
out_bind=True)
except zmq.ZMQError:
with excutils.save_and_reraise_exception():
LOG.error(_("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def consume_in_thread(self):
"""Runs the ZmqProxy service."""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
try:
os.makedirs(ipc_dir)
except os.error:
if not os.path.isdir(ipc_dir):
with excutils.save_and_reraise_exception():
LOG.error(_("Required IPC directory does not exist at"
" %s") % (ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL,
out_bind=True)
except zmq.ZMQError:
if os.access(ipc_dir, os.X_OK):
with excutils.save_and_reraise_exception():
LOG.error(_("Permission denied to IPC directory at"
" %s") % (ipc_dir, ))
with excutils.save_and_reraise_exception():
LOG.error(_("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def _serialize(data):
"""
Serialization wrapper
We prefer using JSON, but it cannot encode all types.
Error if a developer passes us bad data.
"""
try:
return jsonutils.dumps(data, ensure_ascii=True)
except TypeError:
with excutils.save_and_reraise_exception():
LOG.error(_("JSON serialization failed."))
def remove_path_on_error(path):
"""Protect code that wants to operate on PATH atomically.
Any exception will cause PATH to be removed.
:param path: File to work with
"""
try:
yield
except Exception:
with excutils.save_and_reraise_exception():
delete_if_exists(path)
def remove_path_on_error(path):
"""Protect code that wants to operate on PATH atomically.
Any exception will cause PATH to be removed.
:param path: File to work with
"""
try:
yield
except Exception:
with excutils.save_and_reraise_exception():
delete_if_exists(path)
def _serialize(data):
"""
Serialization wrapper
We prefer using JSON, but it cannot encode all types.
Error if a developer passes us bad data.
"""
try:
return jsonutils.dumps(data, ensure_ascii=True)
except TypeError:
with excutils.save_and_reraise_exception():
LOG.error(_("JSON serialization failed."))
def delete_port(self, device_id, vlan_id):
"""Delete port.
Delete port bindings from the database and scan whether the network
is still required on the interfaces trunked.
"""
LOG.debug(_("NexusPlugin:delete_port() called"))
# Delete DB row for this port
try:
row = nxos_db.get_nexusvm_binding(vlan_id, device_id)
except cisco_exc.NexusPortBindingNotFound:
return
nxos_db.remove_nexusport_binding(row['port_id'], row['vlan_id'],
row['switch_ip'],
row['instance_id'])
# Check for any other bindings with the same vlan_id and switch_ip
try:
nxos_db.get_nexusvlan_binding(row['vlan_id'], row['switch_ip'])
except cisco_exc.NexusPortBindingNotFound:
try:
# Delete this vlan from this switch
_nexus_ip = row['switch_ip']
_nexus_ports = ()
if row['port_id'] != 'router':
_nexus_ports = (row['port_id'],)
_nexus_ssh_port = (self._nexus_switches[_nexus_ip,
'ssh_port'])
_nexus_creds = self.get_credential(_nexus_ip)
_nexus_username = _nexus_creds['username']
_nexus_password = _nexus_creds['password']
self._client.delete_vlan(
str(row['vlan_id']), _nexus_ip,
_nexus_username, _nexus_password,
_nexus_ports, _nexus_ssh_port)
except Exception:
# The delete vlan operation on the Nexus failed,
# so this delete_port request has failed. For
# consistency, roll back the Nexus database to what
# it was before this request.
with excutils.save_and_reraise_exception():
nxos_db.add_nexusport_binding(row['port_id'],
row['vlan_id'],
row['switch_ip'],
row['instance_id'])
return row['instance_id']
def __iter__(self):
"""Return a result until we get a 'None' response from consumer"""
if self._done:
raise StopIteration
while True:
try:
self._iterator.next()
except Exception:
with excutils.save_and_reraise_exception():
self.done()
if self._got_ending:
self.done()
raise StopIteration
result = self._result
if isinstance(result, Exception):
self.done()
raise result
yield result
def __iter__(self):
"""Return a result until we get a reply with an 'ending" flag"""
if self._done:
raise StopIteration
while True:
try:
data = self._dataqueue.get(timeout=self._timeout)
result = self._process_data(data)
except queue.Empty:
self.done()
raise rpc_common.Timeout()
except Exception:
with excutils.save_and_reraise_exception():
self.done()
if self._got_ending:
self.done()
raise StopIteration
if isinstance(result, Exception):
self.done()
raise result
yield result
def enable_vlan(self, mgr, vlanid, vlanname):
"""Create a VLAN on Nexus Switch given the VLAN ID and Name."""
confstr = self.create_xml_snippet(
snipp.CMD_VLAN_CONF_SNIPPET % (vlanid, vlanname))
self._edit_config(mgr, target='running', config=confstr)
# Enable VLAN active and no-shutdown states. Some versions of
# Nexus switch do not allow state changes for the extended VLAN
# range (1006-4094), but these errors can be ignored (default
# values are appropriate).
state_config = [snipp.CMD_VLAN_ACTIVE_SNIPPET,
snipp.CMD_VLAN_NO_SHUTDOWN_SNIPPET]
for snippet in state_config:
try:
confstr = self.create_xml_snippet(snippet % vlanid)
self._edit_config(
mgr,
target='running',
config=confstr,
allowed_exc_strs=["Can't modify state for extended",
"Command is only allowed on VLAN"])
except cexc.NexusConfigFailed:
with excutils.save_and_reraise_exception():
self.disable_vlan(mgr, vlanid)
def _issue_request(self):
'''Issue a request to a provider.'''
conn = (self._client_conn or
self._api_client.acquire_connection(True,
copy.copy(self._headers),
rid=self._rid()))
if conn is None:
error = Exception(_("No API connections available"))
self._request_error = error
return error
url = self._url
LOG.debug(_("[%(rid)d] Issuing - request %(conn)s"),
{'rid': self._rid(), 'conn': self._request_str(conn, url)})
issued_time = time.time()
is_conn_error = False
is_conn_service_unavail = False
try:
redirects = 0
while (redirects <= self._redirects):
# Update connection with user specified request timeout,
# the connect timeout is usually smaller so we only set
# the request timeout after a connection is established
if conn.sock is None:
conn.connect()
conn.sock.settimeout(self._http_timeout)
elif conn.sock.gettimeout() != self._http_timeout:
conn.sock.settimeout(self._http_timeout)
headers = copy.copy(self._headers)
cookie = self._api_client.auth_cookie(conn)
if cookie:
headers["Cookie"] = cookie
gen = self._api_client.nvp_config_gen
if gen:
headers["X-Nvp-Wait-For-Config-Generation"] = gen
LOG.debug(_("Setting X-Nvp-Wait-For-Config-Generation "
"request header: '%s'"), gen)
try:
conn.request(self._method, url, self._body, headers)
except Exception as e:
with excutils.save_and_reraise_exception():
LOG.warn(_("[%(rid)d] Exception issuing request: "
"%(e)s"),
{'rid': self._rid(), 'e': e})
response = conn.getresponse()
response.body = response.read()
response.headers = response.getheaders()
LOG.debug(_("[%(rid)d] Completed request '%(conn)s': "
"%(status)s (%(sec)0.2f seconds)"),
{'rid': self._rid(),
'conn': self._request_str(conn, url),
'status': response.status,
'sec': time.time() - issued_time})
new_gen = response.getheader('X-Nvp-Config-Generation', None)
if new_gen:
LOG.debug(_("Reading X-Nvp-config-Generation response "
"header: '%s'"), new_gen)
if (self._api_client.nvp_config_gen is None or
self._api_client.nvp_config_gen < int(new_gen)):
self._api_client.nvp_config_gen = int(new_gen)
if response.status == httplib.UNAUTHORIZED:
if cookie is None and self._url != "/ws.v1/login":
# The connection still has no valid cookie despite
# attemps to authenticate and the request has failed
# with unauthorized status code. If this isn't a
# a request to authenticate, we should abort the
# request since there is no point in retrying.
self._abort = True
else:
# If request is unauthorized, clear the session cookie
# for the current provider so that subsequent requests
# to the same provider triggers re-authentication.
self._api_client.set_auth_cookie(conn, None)
self._api_client.set_auth_cookie(conn, None)
elif response.status == httplib.SERVICE_UNAVAILABLE:
is_conn_service_unavail = True
if response.status not in [httplib.MOVED_PERMANENTLY,
httplib.TEMPORARY_REDIRECT]:
break
elif redirects >= self._redirects:
LOG.info(_("[%d] Maximum redirects exceeded, aborting "
"request"), self._rid())
break
redirects += 1
conn, url = self._redirect_params(conn, response.headers,
self._client_conn is None)
if url is None:
response.status = httplib.INTERNAL_SERVER_ERROR
break
LOG.info(_("[%(rid)d] Redirecting request to: %(conn)s"),
{'rid': self._rid(),
'conn': self._request_str(conn, url)})
# If we receive any of these responses, then
# our server did not process our request and may be in an
# errored state. Raise an exception, which will cause the
# the conn to be released with is_conn_error == True
# which puts the conn on the back of the client's priority
# queue.
if response.status >= 500:
LOG.warn(_("[%(rid)d] Request '%(method) %(url)s' "
"received: %(status)s"),
{'rid': self._rid(), 'method': self._method,
'url': self._url, 'status': response.status})
raise Exception(_('Server error return: %s'), response.status)
return response
except Exception as e:
if isinstance(e, httplib.BadStatusLine):
msg = (_("Invalid server response"))
else:
msg = unicode(e)
LOG.warn(_("[%(rid)d] Failed request '%(conn)s': '%(msg)s' "
"(%(sec)0.2f seconds)"),
{'rid': self._rid(), 'conn': self._request_str(conn, url),
'msg': msg, 'sec': time.time() - issued_time})
self._request_error = e
is_conn_error = True
return e
finally:
# Make sure we release the original connection provided by the
# acquire_connection() call above.
if self._client_conn is None:
self._api_client.release_connection(conn, is_conn_error,
is_conn_service_unavail,
rid=self._rid())
def create_network(self, tenant_id, net_name, net_id, vlan_name, vlan_id,
host, instance):
"""Create network.
Create a VLAN in the appropriate switch/port, and configure the
appropriate interfaces for this VLAN.
"""
LOG.debug(_("NexusPlugin:create_network() called"))
# Grab the switch IP and port for this host
for switch_ip, attr in self._nexus_switches:
if str(attr) == str(host):
port_id = self._nexus_switches[switch_ip, attr]
break
else:
raise cisco_exc.NexusComputeHostNotConfigured(host=host)
# Check if this network is already in the DB
vlan_created = False
vlan_enabled = False
try:
nxos_db.get_port_vlan_switch_binding(port_id, vlan_id, switch_ip)
except cisco_exc.NexusPortBindingNotFound:
_nexus_ip = switch_ip
_nexus_ports = (port_id,)
_nexus_ssh_port = \
self._nexus_switches[switch_ip, 'ssh_port']
_nexus_creds = self.get_credential(_nexus_ip)
_nexus_username = _nexus_creds['username']
_nexus_password = _nexus_creds['password']
# Check for vlan/switch binding
try:
nxos_db.get_nexusvlan_binding(vlan_id, switch_ip)
except cisco_exc.NexusPortBindingNotFound:
# Create vlan and trunk vlan on the port
self._client.create_vlan(
vlan_name, str(vlan_id), _nexus_ip,
_nexus_username, _nexus_password,
_nexus_ports, _nexus_ssh_port, vlan_id)
vlan_created = True
else:
# Only trunk vlan on the port
man = self._client.nxos_connect(_nexus_ip,
int(_nexus_ssh_port),
_nexus_username,
_nexus_password)
self._client.enable_vlan_on_trunk_int(man,
_nexus_ip,
port_id,
vlan_id)
vlan_enabled = True
try:
nxos_db.add_nexusport_binding(port_id, str(vlan_id),
switch_ip, instance)
except Exception:
with excutils.save_and_reraise_exception():
# Add binding failed, roll back any vlan creation/enabling
if vlan_created:
self._client.delete_vlan(
str(vlan_id), _nexus_ip,
_nexus_username, _nexus_password,
_nexus_ports, _nexus_ssh_port)
if vlan_enabled:
self._client.disable_vlan_on_trunk_int(man,
port_id,
vlan_id)
new_net_dict = {const.NET_ID: net_id,
const.NET_NAME: net_name,
const.NET_PORTS: {},
const.NET_VLAN_NAME: vlan_name,
const.NET_VLAN_ID: vlan_id}
self._networks[net_id] = new_net_dict
return new_net_dict
