def __init__(self, configurations, text=False):
_Configuration.__init__(self)
self.api_encoder = environment.settings().api.encoder
self._configurations = configurations
self._text = text
self.error = Error()
self.scope = Scope()
self.tokeniser = Tokeniser(self.scope, self.error, self.logger)
params = (self.tokeniser, self.scope, self.error, self.logger)
self.section = Section(*params)
self.process = ParseProcess(*params)
self.template = ParseTemplate(*params)
self.template_neighbor = ParseTemplateNeighbor(*params)
self.neighbor = ParseNeighbor(*params)
self.family = ParseFamily(*params)
self.addpath = ParseAddPath(*params)
self.capability = ParseCapability(*params)
self.api = ParseAPI(*params)
self.api_send = ParseSend(*params)
self.api_receive = ParseReceive(*params)
self.static = ParseStatic(*params)
self.static_route = ParseStaticRoute(*params)
self.announce = SectionAnnounce(*params)
self.announce_ipv4 = AnnounceIPv4(*params)
self.announce_ipv6 = AnnounceIPv6(*params)
self.announce_l2vpn = AnnounceL2VPN(*params)
self.flow = ParseFlow(*params)
self.flow_route = ParseFlowRoute(*params)
self.flow_match = ParseFlowMatch(*params)
self.flow_then = ParseFlowThen(*params)
self.flow_scope = ParseFlowScope(*params)
self.l2vpn = ParseL2VPN(*params)
self.vpls = ParseVPLS(*params)
self.operational = ParseOperational(*params)
# We should check if name are unique when running Section.__init__
self._structure = {
'root': {
'class': self.section,
'commands': [],
'sections': {
'process': self.process.name,
'neighbor': self.neighbor.name,
'template': self.template.name,
},
},
self.process.name: {
'class': self.process,
'commands': self.process.known.keys(),
'sections': {},
},
self.template.name: {
'class': self.template,
'commands': self.template.known.keys(),
'sections': {
'neighbor': self.template_neighbor.name,
},
},
self.template_neighbor.name: {
'class': self.template_neighbor,
'commands': self.template_neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.neighbor.name: {
'class': self.neighbor,
'commands': self.neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.family.name: {
'class': self.family,
'commands': self.family.known.keys(),
'sections': {},
},
self.capability.name: {
'class': self.capability,
'commands': self.capability.known.keys(),
'sections': {},
},
self.addpath.name: {
'class': self.addpath,
'commands': self.addpath.known.keys(),
'sections': {},
},
self.api.name: {
'class': self.api,
'commands': self.api.known.keys(),
'sections': {
'send': self.api_send.name,
'receive': self.api_receive.name,
},
},
self.api_send.name: {
'class': self.api_send,
'commands': self.api_send.known.keys(),
'sections': {},
},
self.api_receive.name: {
'class': self.api_receive,
'commands': self.api_receive.known.keys(),
'sections': {},
},
self.announce.name: {
'class': self.announce,
'commands': self.announce.known.keys(),
'sections': {
'ipv4': self.announce_ipv4.name,
'ipv6': self.announce_ipv6.name,
'l2vpn': self.announce_l2vpn.name,
},
},
self.announce_ipv4.name: {
'class':
self.announce_ipv4,
'commands': [
'unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow',
'flow-vpn'
],
'sections': {},
},
self.announce_ipv6.name: {
'class':
self.announce_ipv6,
'commands': [
'unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow',
'flow-vpn'
],
'sections': {},
},
self.announce_l2vpn.name: {
'class': self.announce_l2vpn,
'commands': [
'vpls',
],
'sections': {},
},
self.static.name: {
'class': self.static,
'commands': ['route', 'attributes'],
'sections': {
'route': self.static_route.name,
},
},
self.static_route.name: {
'class': self.static_route,
'commands': self.static_route.known.keys(),
'sections': {},
},
self.flow.name: {
'class': self.flow,
'commands': self.flow.known.keys(),
'sections': {
'route': self.flow_route.name,
},
},
self.flow_route.name: {
'class': self.flow_route,
'commands': self.flow_route.known.keys(),
'sections': {
'match': self.flow_match.name,
'then': self.flow_then.name,
'scope': self.flow_scope.name,
},
},
self.flow_match.name: {
'class': self.flow_match,
'commands': self.flow_match.known.keys(),
'sections': {},
},
self.flow_then.name: {
'class': self.flow_then,
'commands': self.flow_then.known.keys(),
'sections': {},
},
self.flow_scope.name: {
'class': self.flow_scope,
'commands': self.flow_scope.known.keys(),
'sections': {}
},
self.l2vpn.name: {
'class': self.l2vpn,
'commands': self.l2vpn.known.keys(),
'sections': {
'vpls': self.vpls.name,
},
},
self.vpls.name: {
'class': self.vpls,
'commands': self.l2vpn.known.keys(),
'sections': {},
},
self.operational.name: {
'class': self.operational,
'commands': self.operational.known.keys(),
'sections': {}
},
}
self._neighbors = {}
self._previous_neighbors = {}
def __init__ (self, configurations, text=False):
_Configuration.__init__(self)
self.api_encoder = environment.settings().api.encoder
self._configurations = configurations
self._text = text
self.error = Error ()
self.scope = Scope ()
self.tokeniser = Tokeniser(self.scope,self.error,self.logger)
params = (self.tokeniser,self.scope,self.error,self.logger)
generic = Section (*params)
self.process = ParseProcess (*params)
self.template = ParseTemplate (*params)
self.template_neighbor = ParseTemplateNeighbor (*params)
self.neighbor = ParseNeighbor (*params)
self.family = ParseFamily (*params)
self.addpath = ParseAddPath (*params)
self.capability = ParseCapability (*params)
self.api = ParseAPI (*params)
self.api_send = ParseSend (*params)
self.api_receive = ParseReceive (*params)
self.static = ParseStatic (*params)
self.static_route = ParseStaticRoute (*params)
self.announce = SectionAnnounce (*params)
self.announce_ipv4 = AnnounceIPv4 (*params)
self.announce_ipv6 = AnnounceIPv6 (*params)
self.announce_l2vpn = AnnounceL2VPN (*params)
self.flow = ParseFlow (*params)
self.flow_route = ParseFlowRoute (*params)
self.flow_match = ParseFlowMatch (*params)
self.flow_then = ParseFlowThen (*params)
self.flow_scope = ParseFlowScope (*params)
self.l2vpn = ParseL2VPN (*params)
self.vpls = ParseVPLS (*params)
self.operational = ParseOperational (*params)
# We should check if name are unique when running Section.__init__
self._structure = {
'root': {
'class': generic,
'commands': [],
'sections': {
'process': self.process.name,
'neighbor': self.neighbor.name,
'template': self.template.name,
},
},
self.process.name: {
'class': self.process,
'commands': self.process.known.keys(),
'sections': {},
},
self.template.name: {
'class': self.template,
'commands': self.template.known.keys(),
'sections': {
'neighbor': self.template_neighbor.name,
},
},
self.template_neighbor.name: {
'class': self.template_neighbor,
'commands': self.template_neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.neighbor.name: {
'class': self.neighbor,
'commands': self.neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.family.name: {
'class': self.family,
'commands': self.family.known.keys(),
'sections': {
},
},
self.capability.name: {
'class': self.capability,
'commands': self.capability.known.keys(),
'sections': {
},
},
self.addpath.name: {
'class': self.addpath,
'commands': self.addpath.known.keys(),
'sections': {
},
},
self.api.name: {
'class': self.api,
'commands': self.api.known.keys(),
'sections': {
'send': self.api_send.name,
'receive': self.api_receive.name,
},
},
self.api_send.name: {
'class': self.api_send,
'commands': self.api_send.known.keys(),
'sections': {
},
},
self.api_receive.name: {
'class': self.api_receive,
'commands': self.api_receive.known.keys(),
'sections': {
},
},
self.announce.name: {
'class': self.announce,
'commands': self.announce.known.keys(),
'sections': {
'ipv4': self.announce_ipv4.name,
'ipv6': self.announce_ipv6.name,
'l2vpn': self.announce_l2vpn.name,
},
},
self.announce_ipv4.name: {
'class': self.announce_ipv4,
'commands': ['unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow', 'flow-vpn'],
'sections': {
},
},
self.announce_ipv6.name: {
'class': self.announce_ipv6,
'commands': ['unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow', 'flow-vpn'],
'sections': {
},
},
self.announce_l2vpn.name: {
'class': self.announce_l2vpn,
'commands': ['vpls',],
'sections': {
},
},
self.static.name: {
'class': self.static,
'commands': ['route','attributes'],
'sections': {
'route': self.static_route.name,
},
},
self.static_route.name: {
'class': self.static_route,
'commands': self.static_route.known.keys(),
'sections': {
},
},
self.flow.name: {
'class': self.flow,
'commands': self.flow.known.keys(),
'sections': {
'route': self.flow_route.name,
},
},
self.flow_route.name: {
'class': self.flow_route,
'commands': self.flow_route.known.keys(),
'sections': {
'match': self.flow_match.name,
'then': self.flow_then.name,
'scope': self.flow_scope.name,
},
},
self.flow_match.name: {
'class': self.flow_match,
'commands': self.flow_match.known.keys(),
'sections': {
},
},
self.flow_then.name: {
'class': self.flow_then,
'commands': self.flow_then.known.keys(),
'sections': {
},
},
self.flow_scope.name: {
'class': self.flow_scope,
'commands': self.flow_scope.known.keys(),
'sections': {
}
},
self.l2vpn.name: {
'class': self.l2vpn,
'commands': self.l2vpn.known.keys(),
'sections': {
'vpls': self.vpls.name,
},
},
self.vpls.name: {
'class': self.vpls,
'commands': self.l2vpn.known.keys(),
'sections': {
},
},
self.operational.name: {
'class': self.operational,
'commands': self.operational.known.keys(),
'sections': {
}
},
}
self._neighbors = {}
self._previous_neighbors = {}
class Configuration(_Configuration):
def __init__(self, configurations, text=False):
_Configuration.__init__(self)
self.api_encoder = environment.settings().api.encoder
self._configurations = configurations
self._text = text
self.error = Error()
self.scope = Scope()
self.tokeniser = Tokeniser(self.scope, self.error, self.logger)
params = (self.tokeniser, self.scope, self.error, self.logger)
self.section = Section(*params)
self.process = ParseProcess(*params)
self.template = ParseTemplate(*params)
self.template_neighbor = ParseTemplateNeighbor(*params)
self.neighbor = ParseNeighbor(*params)
self.family = ParseFamily(*params)
self.addpath = ParseAddPath(*params)
self.capability = ParseCapability(*params)
self.api = ParseAPI(*params)
self.api_send = ParseSend(*params)
self.api_receive = ParseReceive(*params)
self.static = ParseStatic(*params)
self.static_route = ParseStaticRoute(*params)
self.announce = SectionAnnounce(*params)
self.announce_ipv4 = AnnounceIPv4(*params)
self.announce_ipv6 = AnnounceIPv6(*params)
self.announce_l2vpn = AnnounceL2VPN(*params)
self.flow = ParseFlow(*params)
self.flow_route = ParseFlowRoute(*params)
self.flow_match = ParseFlowMatch(*params)
self.flow_then = ParseFlowThen(*params)
self.flow_scope = ParseFlowScope(*params)
self.l2vpn = ParseL2VPN(*params)
self.vpls = ParseVPLS(*params)
self.operational = ParseOperational(*params)
# We should check if name are unique when running Section.__init__
self._structure = {
'root': {
'class': self.section,
'commands': [],
'sections': {
'process': self.process.name,
'neighbor': self.neighbor.name,
'template': self.template.name,
},
},
self.process.name: {
'class': self.process,
'commands': self.process.known.keys(),
'sections': {},
},
self.template.name: {
'class': self.template,
'commands': self.template.known.keys(),
'sections': {
'neighbor': self.template_neighbor.name,
},
},
self.template_neighbor.name: {
'class': self.template_neighbor,
'commands': self.template_neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.neighbor.name: {
'class': self.neighbor,
'commands': self.neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.family.name: {
'class': self.family,
'commands': self.family.known.keys(),
'sections': {},
},
self.capability.name: {
'class': self.capability,
'commands': self.capability.known.keys(),
'sections': {},
},
self.addpath.name: {
'class': self.addpath,
'commands': self.addpath.known.keys(),
'sections': {},
},
self.api.name: {
'class': self.api,
'commands': self.api.known.keys(),
'sections': {
'send': self.api_send.name,
'receive': self.api_receive.name,
},
},
self.api_send.name: {
'class': self.api_send,
'commands': self.api_send.known.keys(),
'sections': {},
},
self.api_receive.name: {
'class': self.api_receive,
'commands': self.api_receive.known.keys(),
'sections': {},
},
self.announce.name: {
'class': self.announce,
'commands': self.announce.known.keys(),
'sections': {
'ipv4': self.announce_ipv4.name,
'ipv6': self.announce_ipv6.name,
'l2vpn': self.announce_l2vpn.name,
},
},
self.announce_ipv4.name: {
'class':
self.announce_ipv4,
'commands': [
'unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow',
'flow-vpn'
],
'sections': {},
},
self.announce_ipv6.name: {
'class':
self.announce_ipv6,
'commands': [
'unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow',
'flow-vpn'
],
'sections': {},
},
self.announce_l2vpn.name: {
'class': self.announce_l2vpn,
'commands': [
'vpls',
],
'sections': {},
},
self.static.name: {
'class': self.static,
'commands': ['route', 'attributes'],
'sections': {
'route': self.static_route.name,
},
},
self.static_route.name: {
'class': self.static_route,
'commands': self.static_route.known.keys(),
'sections': {},
},
self.flow.name: {
'class': self.flow,
'commands': self.flow.known.keys(),
'sections': {
'route': self.flow_route.name,
},
},
self.flow_route.name: {
'class': self.flow_route,
'commands': self.flow_route.known.keys(),
'sections': {
'match': self.flow_match.name,
'then': self.flow_then.name,
'scope': self.flow_scope.name,
},
},
self.flow_match.name: {
'class': self.flow_match,
'commands': self.flow_match.known.keys(),
'sections': {},
},
self.flow_then.name: {
'class': self.flow_then,
'commands': self.flow_then.known.keys(),
'sections': {},
},
self.flow_scope.name: {
'class': self.flow_scope,
'commands': self.flow_scope.known.keys(),
'sections': {}
},
self.l2vpn.name: {
'class': self.l2vpn,
'commands': self.l2vpn.known.keys(),
'sections': {
'vpls': self.vpls.name,
},
},
self.vpls.name: {
'class': self.vpls,
'commands': self.l2vpn.known.keys(),
'sections': {},
},
self.operational.name: {
'class': self.operational,
'commands': self.operational.known.keys(),
'sections': {}
},
}
self._neighbors = {}
self._previous_neighbors = {}
def _clear(self):
self.processes = {}
self._previous_neighbors = self.neighbors
self.neighbors = {}
self._neighbors = {}
# clear the parser data (ie: free memory)
def _cleanup(self):
self.error.clear()
self.tokeniser.clear()
self.scope.clear()
self.process.clear()
self.template.clear()
self.template_neighbor.clear()
self.neighbor.clear()
self.family.clear()
self.capability.clear()
self.api.clear()
self.api_send.clear()
self.api_receive.clear()
self.announce_ipv6.clear()
self.announce_ipv4.clear()
self.announce_l2vpn.clear()
self.announce.clear()
self.static.clear()
self.static_route.clear()
self.flow.clear()
self.flow_route.clear()
self.flow_match.clear()
self.flow_then.clear()
self.flow_scope.clear()
self.l2vpn.clear()
self.vpls.clear()
self.operational.clear()
def _rollback_reload(self):
self.neighbors = self._previous_neighbors
self.processes = self.process.processes
self._neighbors = {}
self._previous_neighbors = {}
def _commit_reload(self):
self.neighbors = self.neighbor.neighbors
# XXX: Yes, we do not detect changes in processes and restart anything ..
# XXX: This is a bug ..
self.processes = self.process.processes
self._neighbors = {}
# Add the changes prior to the reload to the neighbor to correct handling of deleted routes
for neighbor in self.neighbors:
if neighbor in self._previous_neighbors:
self.neighbors[
neighbor].backup_changes = self._previous_neighbors[
neighbor].changes
self._previous_neighbors = {}
self._cleanup()
def reload(self):
try:
return self._reload()
except KeyboardInterrupt:
return self.error.set(
'configuration reload aborted by ^C or SIGINT')
except Error as exc:
if environment.settings().debug.configuration:
raise
return self.error.set(
'problem parsing configuration file line %d\n'
'error message: %s' % (self.tokeniser.index_line, exc))
except StandardError as exc:
if environment.settings().debug.configuration:
raise
return self.error.set(
'problem parsing configuration file line %d\n'
'error message: %s' % (self.tokeniser.index_line, exc))
def _reload(self):
# taking the first configuration available (FIFO buffer)
fname = self._configurations.pop(0)
self._configurations.append(fname)
# clearing the current configuration to be able to re-parse it
self._clear()
if self._text:
if not self.tokeniser.set_text(fname):
return False
else:
if not self.tokeniser.set_file(fname):
return False
if self.parseSection('root') is not True:
# XXX: Should it be in neighbor ?
self.process.add_api()
self._rollback_reload()
return self.error.set(
"\n"
"syntax error in section %s\n"
"line %d: %s\n"
"\n%s" % (self.scope.location(), self.tokeniser.number,
' '.join(self.tokeniser.line), str(self.error)))
self.process.add_api()
self._commit_reload()
self._link()
self.debug_check_route()
self.debug_self_check()
return True
def _link(self):
for neighbor in six.itervalues(self.neighbors):
api = neighbor.api
for process in api.get('processes', []):
self.processes.setdefault(
process, {})['neighbor-changes'] = api['neighbor-changes']
self.processes.setdefault(process,
{})['negotiated'] = api['negotiated']
self.processes.setdefault(process, {})['fsm'] = api['fsm']
self.processes.setdefault(process,
{})['signal'] = api['signal']
for way in ('send', 'receive'):
for name in ('parsed', 'packets', 'consolidate'):
key = "%s-%s" % (way, name)
if api[key]:
self.processes[process].setdefault(key, []).append(
neighbor.router_id)
for name in ('open', 'update', 'notification', 'keepalive',
'refresh', 'operational'):
key = "%s-%s" % (way, name)
if api[key]:
self.processes[process].setdefault(key, []).append(
neighbor.router_id)
def partial(self, section, text):
self._cleanup(
) # this perform a big cleanup (may be able to be smarter)
self._clear()
self.tokeniser.set_api(
text if text.endswith(';') or text.endswith('}') else text + ' ;')
if self.parseSection(section) is not True:
self._rollback_reload()
self.logger.debug(
"\n"
"syntax error in api command %s\n"
"line %d: %s\n"
"\n%s" % (self.scope.location(), self.tokeniser.number,
' '.join(self.tokeniser.line), str(self.error)),
'configuration')
return False
return True
def _enter(self, name):
location = self.tokeniser.iterate()
self.logger.debug("> %-16s | %s" % (location, self.tokeniser.params()),
'configuration')
if location not in self._structure[name]['sections']:
return self.error.set('section %s is invalid in %s, %s' %
(location, name, self.scope.location()))
self.scope.enter(location)
self.scope.to_context()
class_name = self._structure[name]['sections'][location]
instance = self._structure[class_name].get('class', None)
if not instance:
raise RuntimeError('This should not be happening, debug time !')
if not instance.pre():
return False
if not self.dispatch(self._structure[name]['sections'][location]):
return False
if not instance.post():
return False
left = self.scope.leave()
if not left:
return self.error.set('closing too many parenthesis')
self.scope.to_context()
self.logger.debug("< %-16s | %s" % (left, self.tokeniser.params()),
'configuration')
return True
def _run(self, name):
command = self.tokeniser.iterate()
self.logger.debug(". %-16s | %s" % (command, self.tokeniser.params()),
'configuration')
if not self.run(name, command):
return False
return True
def dispatch(self, name):
while True:
self.tokeniser()
if self.tokeniser.end == ';':
if self._run(name):
continue
return False
if self.tokeniser.end == '{':
if self._enter(name):
continue
return False
if self.tokeniser.end == '}':
return True
if not self.tokeniser.end: # finished
return True
return self.error.set('invalid syntax line %d' %
self.tokeniser.index_line)
return False
def parseSection(self, name):
if name not in self._structure:
return self.error.set('option %s is not allowed here' % name)
return self.dispatch(name)
def run(self, name, command):
# restore 'anounce attribute' to provide backward 3.4 compatibility
if name == 'static' and command == 'attribute':
command = 'attributes'
if command not in self._structure[name]['commands']:
return self.error.set('invalid keyword "%s"' % command)
return self._structure[name]['class'].parse(name, command)
def debug_check_route(self):
# we are not really running the program, just want to ....
if environment.settings().debug.route:
from exabgp.configuration.check import check_message
if check_message(self.neighbors,
environment.settings().debug.route):
sys.exit(0)
sys.exit(1)
def debug_self_check(self):
# we are not really running the program, just want check the configuration validity
if environment.settings().debug.selfcheck:
from exabgp.configuration.check import check_neighbor
if check_neighbor(self.neighbors):
sys.exit(0)
sys.exit(1)
class Configuration (_Configuration):
def __init__ (self, configurations, text=False):
_Configuration.__init__(self)
self.api_encoder = environment.settings().api.encoder
self._configurations = configurations
self._text = text
self.error = Error ()
self.scope = Scope ()
self.tokeniser = Tokeniser(self.scope,self.error,self.logger)
params = (self.tokeniser,self.scope,self.error,self.logger)
generic = Section (*params)
self.process = ParseProcess (*params)
self.template = ParseTemplate (*params)
self.template_neighbor = ParseTemplateNeighbor (*params)
self.neighbor = ParseNeighbor (*params)
self.family = ParseFamily (*params)
self.addpath = ParseAddPath (*params)
self.capability = ParseCapability (*params)
self.api = ParseAPI (*params)
self.api_send = ParseSend (*params)
self.api_receive = ParseReceive (*params)
self.static = ParseStatic (*params)
self.static_route = ParseStaticRoute (*params)
self.announce = SectionAnnounce (*params)
self.announce_ipv4 = AnnounceIPv4 (*params)
self.announce_ipv6 = AnnounceIPv6 (*params)
self.announce_l2vpn = AnnounceL2VPN (*params)
self.flow = ParseFlow (*params)
self.flow_route = ParseFlowRoute (*params)
self.flow_match = ParseFlowMatch (*params)
self.flow_then = ParseFlowThen (*params)
self.flow_scope = ParseFlowScope (*params)
self.l2vpn = ParseL2VPN (*params)
self.vpls = ParseVPLS (*params)
self.operational = ParseOperational (*params)
# We should check if name are unique when running Section.__init__
self._structure = {
'root': {
'class': generic,
'commands': [],
'sections': {
'process': self.process.name,
'neighbor': self.neighbor.name,
'template': self.template.name,
},
},
self.process.name: {
'class': self.process,
'commands': self.process.known.keys(),
'sections': {},
},
self.template.name: {
'class': self.template,
'commands': self.template.known.keys(),
'sections': {
'neighbor': self.template_neighbor.name,
},
},
self.template_neighbor.name: {
'class': self.template_neighbor,
'commands': self.template_neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.neighbor.name: {
'class': self.neighbor,
'commands': self.neighbor.known.keys(),
'sections': {
'family': self.family.name,
'capability': self.capability.name,
'add-path': self.addpath.name,
'api': self.api.name,
'static': self.static.name,
'flow': self.flow.name,
'l2vpn': self.l2vpn.name,
'operational': self.operational.name,
'announce': self.announce.name,
},
},
self.family.name: {
'class': self.family,
'commands': self.family.known.keys(),
'sections': {
},
},
self.capability.name: {
'class': self.capability,
'commands': self.capability.known.keys(),
'sections': {
},
},
self.addpath.name: {
'class': self.addpath,
'commands': self.addpath.known.keys(),
'sections': {
},
},
self.api.name: {
'class': self.api,
'commands': self.api.known.keys(),
'sections': {
'send': self.api_send.name,
'receive': self.api_receive.name,
},
},
self.api_send.name: {
'class': self.api_send,
'commands': self.api_send.known.keys(),
'sections': {
},
},
self.api_receive.name: {
'class': self.api_receive,
'commands': self.api_receive.known.keys(),
'sections': {
},
},
self.announce.name: {
'class': self.announce,
'commands': self.announce.known.keys(),
'sections': {
'ipv4': self.announce_ipv4.name,
'ipv6': self.announce_ipv6.name,
'l2vpn': self.announce_l2vpn.name,
},
},
self.announce_ipv4.name: {
'class': self.announce_ipv4,
'commands': ['unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow', 'flow-vpn'],
'sections': {
},
},
self.announce_ipv6.name: {
'class': self.announce_ipv6,
'commands': ['unicast', 'multicast', 'nlri-mpls', 'mpls-vpn', 'flow', 'flow-vpn'],
'sections': {
},
},
self.announce_l2vpn.name: {
'class': self.announce_l2vpn,
'commands': ['vpls',],
'sections': {
},
},
self.static.name: {
'class': self.static,
'commands': ['route','attributes'],
'sections': {
'route': self.static_route.name,
},
},
self.static_route.name: {
'class': self.static_route,
'commands': self.static_route.known.keys(),
'sections': {
},
},
self.flow.name: {
'class': self.flow,
'commands': self.flow.known.keys(),
'sections': {
'route': self.flow_route.name,
},
},
self.flow_route.name: {
'class': self.flow_route,
'commands': self.flow_route.known.keys(),
'sections': {
'match': self.flow_match.name,
'then': self.flow_then.name,
'scope': self.flow_scope.name,
},
},
self.flow_match.name: {
'class': self.flow_match,
'commands': self.flow_match.known.keys(),
'sections': {
},
},
self.flow_then.name: {
'class': self.flow_then,
'commands': self.flow_then.known.keys(),
'sections': {
},
},
self.flow_scope.name: {
'class': self.flow_scope,
'commands': self.flow_scope.known.keys(),
'sections': {
}
},
self.l2vpn.name: {
'class': self.l2vpn,
'commands': self.l2vpn.known.keys(),
'sections': {
'vpls': self.vpls.name,
},
},
self.vpls.name: {
'class': self.vpls,
'commands': self.l2vpn.known.keys(),
'sections': {
},
},
self.operational.name: {
'class': self.operational,
'commands': self.operational.known.keys(),
'sections': {
}
},
}
self._neighbors = {}
self._previous_neighbors = {}
def _clear (self):
self.processes = {}
self._previous_neighbors = self.neighbors
self.neighbors = {}
self._neighbors = {}
# clear the parser data (ie: free memory)
def _cleanup (self):
self.error.clear()
self.tokeniser.clear()
self.scope.clear()
self.process.clear()
self.template.clear()
self.template_neighbor.clear()
self.neighbor.clear()
self.family.clear()
self.capability.clear()
self.api.clear()
self.api_send.clear()
self.api_receive.clear()
self.announce_ipv6.clear()
self.announce_ipv4.clear()
self.announce_l2vpn.clear()
self.announce.clear()
self.static.clear()
self.static_route.clear()
self.flow.clear()
self.flow_route.clear()
self.flow_match.clear()
self.flow_then.clear()
self.flow_scope.clear()
self.l2vpn.clear()
self.vpls.clear()
self.operational.clear()
def _rollback_reload (self):
self.neighbors = self._previous_neighbors
self.processes = self.process.processes
self._neighbors = {}
self._previous_neighbors = {}
def _commit_reload (self):
self.neighbors = self.neighbor.neighbors
# XXX: Yes, we do not detect changes in processes and restart anything ..
# XXX: This is a bug ..
self.processes = self.process.processes
self._neighbors = {}
# Add the changes prior to the reload to the neighbor to correct handling of deleted routes
for neighbor in self.neighbors:
if neighbor in self._previous_neighbors:
self.neighbors[neighbor].backup_changes = self._previous_neighbors[neighbor].changes
self._previous_neighbors = {}
self._cleanup()
def reload (self):
try:
return self._reload()
except KeyboardInterrupt:
return self.error.set('configuration reload aborted by ^C or SIGINT')
except Error as exc:
if environment.settings().debug.configuration:
raise
return self.error.set(
'problem parsing configuration file line %d\n'
'error message: %s' % (self.tokeniser.index_line, exc)
)
except StandardError as exc:
if environment.settings().debug.configuration:
raise
return self.error.set(
'problem parsing configuration file line %d\n'
'error message: %s' % (self.tokeniser.index_line, exc)
)
def _reload (self):
# taking the first configuration available (FIFO buffer)
fname = self._configurations.pop(0)
self._configurations.append(fname)
# clearing the current configuration to be able to re-parse it
self._clear()
if self._text:
if not self.tokeniser.set_text(fname):
return False
else:
if not self.tokeniser.set_file(fname):
return False
if self.section('root') is not True:
# XXX: Should it be in neighbor ?
self.process.add_api()
self._rollback_reload()
return self.error.set(
"\n"
"syntax error in section %s\n"
"line %d: %s\n"
"\n%s" % (
self.scope.location(),
self.tokeniser.number,
' '.join(self.tokeniser.line),
str(self.error)
)
)
self.process.add_api()
self._commit_reload()
self._link()
self.debug_check_route()
self.debug_self_check()
return True
def _link (self):
for neighbor in six.itervalues(self.neighbors):
api = neighbor.api
for process in api.get('processes',[]):
self.processes.setdefault(process,{})['neighbor-changes'] = api['neighbor-changes']
self.processes.setdefault(process,{})['negotiated'] = api['negotiated']
self.processes.setdefault(process,{})['fsm'] = api['fsm']
self.processes.setdefault(process,{})['signal'] = api['signal']
for way in ('send','receive'):
for name in ('parsed','packets','consolidate'):
key = "%s-%s" % (way,name)
if api[key]:
self.processes[process].setdefault(key,[]).append(neighbor.router_id)
for name in ('open', 'update', 'notification', 'keepalive', 'refresh', 'operational'):
key = "%s-%s" % (way,name)
if api[key]:
self.processes[process].setdefault(key,[]).append(neighbor.router_id)
def partial (self, section, text):
self._cleanup() # this perform a big cleanup (may be able to be smarter)
self._clear()
self.tokeniser.set_api(text if text.endswith(';') or text.endswith('}') else text + ' ;')
if self.section(section) is not True:
self._rollback_reload()
self.logger.debug(
"\n"
"syntax error in api command %s\n"
"line %d: %s\n"
"\n%s" % (
self.scope.location(),
self.tokeniser.number,
' '.join(self.tokeniser.line),
str(self.error)
),
'configuration'
)
return False
return True
def _enter (self,name):
location = self.tokeniser.iterate()
self.logger.debug("> %-16s | %s" % (location,self.tokeniser.params()),'configuration')
if location not in self._structure[name]['sections']:
return self.error.set('section %s is invalid in %s, %s' % (location,name,self.scope.location()))
self.scope.enter(location)
self.scope.to_context()
class_name = self._structure[name]['sections'][location]
instance = self._structure[class_name].get('class',None)
if not instance:
raise RuntimeError('This should not be happening, debug time !')
if not instance.pre():
return False
if not self.dispatch(self._structure[name]['sections'][location]):
return False
if not instance.post():
return False
left = self.scope.leave()
if not left:
return self.error.set('closing too many parenthesis')
self.scope.to_context()
self.logger.debug("< %-16s | %s" % (left,self.tokeniser.params()),'configuration')
return True
def _run (self,name):
command = self.tokeniser.iterate()
self.logger.debug(". %-16s | %s" % (command,self.tokeniser.params()),'configuration')
if not self.run(name,command):
return False
return True
def dispatch (self,name):
while True:
self.tokeniser()
if self.tokeniser.end == ';':
if self._run(name):
continue
return False
if self.tokeniser.end == '{':
if self._enter(name):
continue
return False
if self.tokeniser.end == '}':
return True
if not self.tokeniser.end: # finished
return True
return self.error.set('invalid syntax line %d' % self.tokeniser.index_line)
return False
def section (self, name):
if name not in self._structure:
return self.error.set('option %s is not allowed here' % name)
return self.dispatch(name)
def run (self, name, command):
# restore 'anounce attribute' to provide backward 3.4 compatibility
if name == 'static' and command == 'attribute':
command = 'attributes'
if command not in self._structure[name]['commands']:
return self.error.set('invalid keyword "%s"' % command)
return self._structure[name]['class'].parse(name,command)
def debug_check_route (self):
# we are not really running the program, just want to ....
if environment.settings().debug.route:
from exabgp.configuration.check import check_message
if check_message(self.neighbors,environment.settings().debug.route):
sys.exit(0)
sys.exit(1)
def debug_self_check (self):
# we are not really running the program, just want check the configuration validity
if environment.settings().debug.selfcheck:
from exabgp.configuration.check import check_neighbor
if check_neighbor(self.neighbors):
sys.exit(0)
sys.exit(1)