def _run_openstack_l3_cmds(self, commands, server):
"""Execute/sends a CAPI (Command API) command to EOS.
In this method, list of commands is appended with prefix and
postfix commands - to make is understandble by EOS.
:param commands : List of command to be executed on EOS.
:param server: Server endpoint on the Arista switch to be configured
"""
command_start = ['enable', 'configure']
command_end = ['exit']
full_command = command_start + commands + command_end
LOG.info(_LI('Executing command on Arista EOS: %s'), full_command)
try:
# this returns array of return values for every command in
# full_command list
ret = server.runCmds(version=1, cmds=full_command)
LOG.info(_LI('Results of execution on Arista EOS: %s'), ret)
except Exception:
msg = (_LE("Error occurred while trying to execute "
"commands %(cmd)s on EOS %(host)s"),
{'cmd': full_command, 'host': server})
LOG.exception(msg)
raise arista_exc.AristaServicePluginRpcError(msg=msg)
def delete_router(self, context, tenant_id, router_id, router):
"""Deletes a router from Arista Switch."""
if router:
router_name = self._arista_router_name(tenant_id, router['name'])
mlag_peer_failed = False
for s in self._servers:
try:
self.delete_router_from_eos(router_name, s)
mlag_peer_failed = False
except Exception:
if self.mlag_configured and not mlag_peer_failed:
mlag_peer_failed = True
else:
msg = (_LE('Failed to delete router %s from EOS') %
router_name)
LOG.exception(msg)
raise arista_exc.AristaServicePluginRpcError(msg=msg)
def add_router_interface(self, context, router_info):
"""Adds an interface to a router created on Arista HW router.
This deals with both IPv6 and IPv4 configurations.
"""
if router_info:
self._select_dicts(router_info['ip_version'])
cidr = router_info['cidr']
subnet_mask = cidr.split('/')[1]
router_name = self._arista_router_name(router_info['tenant_id'],
router_info['name'])
if self.mlag_configured:
# For MLAG, we send a specific IP address as opposed to cidr
# For now, we are using x.x.x.253 and x.x.x.254 as virtual IP
mlag_peer_failed = False
for i, server in enumerate(self._servers):
#get appropriate virtual IP address for this router
router_ip = self._get_router_ip(cidr, i,
router_info['ip_version'])
try:
self.add_interface_to_router(router_info['seg_id'],
router_name,
router_info['gip'],
router_ip, subnet_mask,
server)
mlag_peer_failed = False
except Exception:
if not mlag_peer_failed:
mlag_peer_failed = True
else:
msg = (_('Failed to add interface to router '
'%s on EOS') % router_name)
LOG.exception(msg)
raise arista_exc.AristaServicePluginRpcError(
msg=msg)
else:
for s in self._servers:
self.add_interface_to_router(router_info['seg_id'],
router_name,
router_info['gip'],
None, subnet_mask, s)
def remove_router_interface(self, context, router_info):
"""Removes previously configured interface from router on Arista HW.
This deals with both IPv6 and IPv4 configurations.
"""
if router_info:
router_name = self._arista_router_name(router_info['tenant_id'],
router_info['name'])
mlag_peer_failed = False
for s in self._servers:
try:
self.delete_interface_from_router(router_info['seg_id'],
router_name, s)
if self.mlag_configured:
mlag_peer_failed = False
except Exception:
if self.mlag_configured and not mlag_peer_failed:
mlag_peer_failed = True
else:
msg = (_LE('Failed to remove interface from router '
'%s on EOS') % router_name)
LOG.exception(msg)
raise arista_exc.AristaServicePluginRpcError(msg=msg)
def create_router(self, context, tenant_id, router):
"""Creates a router on Arista Switch.
Deals with multiple configurations - such as Router per VRF,
a router in default VRF, Virtual Router in MLAG configurations
"""
if router:
router_name = self._arista_router_name(tenant_id, router['name'])
rdm = str(int(hashlib.sha256(router_name).hexdigest(), 16) % 6553)
mlag_peer_failed = False
for s in self._servers:
try:
self.create_router_on_eos(router_name, rdm, s)
mlag_peer_failed = False
except Exception:
if self.mlag_configured and not mlag_peer_failed:
mlag_peer_failed = True
else:
msg = (_('Failed to create router %s on EOS') %
router_name)
LOG.exception(msg)
raise arista_exc.AristaServicePluginRpcError(msg=msg)
