--- /dev/null
+
+#
+# Copyright 2016 RIFT.IO 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 contextlib
+import logging
+
+import gi
+gi.require_version('RwSdn', '1.0')
+gi.require_version('RwCal', '1.0')
+gi.require_version('RwcalYang', '1.0')
+
+from rift.rwcal.openstack import session as sess_drv
+from rift.rwcal.openstack import keystone as ks_drv
+from rift.rwcal.openstack import neutron as nt_drv
+from rift.rwcal.openstack import portchain as port_drv
+
+
+
+import rw_status
+import rift.cal.rwcal_status as rwcal_status
+import rwlogger
+import neutronclient.common.exceptions as NeutronException
+import keystoneclient.exceptions as KeystoneExceptions
+
+
+from gi.repository import (
+ GObject,
+ RwCal,
+ RwSdn, # Vala package
+ RwsdnYang,
+ RwTypes,
+ RwcalYang)
+
+rwstatus_exception_map = { IndexError: RwTypes.RwStatus.NOTFOUND,
+ KeyError: RwTypes.RwStatus.NOTFOUND,
+ NotImplementedError: RwTypes.RwStatus.NOT_IMPLEMENTED,}
+
+rwstatus = rw_status.rwstatus_from_exc_map(rwstatus_exception_map)
+rwcalstatus = rwcal_status.rwcalstatus_from_exc_map(rwstatus_exception_map)
+
+
+class OpenstackSdnOperationFailure(Exception):
+ pass
+
+class UninitializedPluginError(Exception):
+ pass
+
+class OpenstackL2PortChainingDriver(object):
+ """
+ Driver for openstack keystone and neutron
+ """
+ def __init__(self, logger = None, **kwargs):
+ """
+ OpenstackDriver Driver constructor
+ Arguments:
+ logger: (instance of logging.Logger)
+ kwargs: A dictionary of
+ {
+ username (string) : Username for project/tenant.
+ password (string) : Password
+ auth_url (string) : Keystone Authentication URL.
+ project (string) : Openstack project name
+ cert_validate (boolean, optional) : In case of SSL/TLS connection if certificate validation is required or not.
+ user_domain : Domain name for user
+ project_domain : Domain name for project
+ region : Region name
+ }
+ """
+
+ if logger is None:
+ self.log = logging.getLogger('rwsdn.openstack.driver')
+ self.log.setLevel(logging.DEBUG)
+ else:
+ self.log = logger
+
+ args = dict(auth_url = kwargs['auth_url'],
+ username = kwargs['username'],
+ password = kwargs['password'],
+ project_name = kwargs['project'],
+ project_domain_name = kwargs['project_domain'] if 'project_domain' in kwargs else None,
+ user_domain_name = kwargs['user_domain'] if 'user_domain' in kwargs else None,)
+
+ cert_validate = kwargs['cert_validate'] if 'cert_validate' in kwargs else False
+ region = kwargs['region_name'] if 'region_name' in kwargs else False
+
+ discover = ks_drv.KeystoneVersionDiscover(kwargs['auth_url'], logger = self.log)
+ (major, minor) = discover.get_version()
+
+ self.sess_drv = sess_drv.SessionDriver(auth_method = 'password',
+ version = str(major),
+ cert_validate = cert_validate,
+ logger = self.log,
+ **args)
+
+ self.neutron_drv = nt_drv.NeutronDriver(self.sess_drv,
+ region_name = region,
+ logger = self.log)
+
+ self.portchain_drv = port_drv.L2PortChainDriver(self.sess_drv,
+ self.neutron_drv.neutron_endpoint,
+ logger = self.log)
+
+ def validate_account_creds(self):
+ try:
+ self.sess_drv.invalidate_auth_token()
+ self.sess_drv.auth_token
+ except KeystoneExceptions.AuthorizationFailure as e:
+ self.log.error("Unable to authenticate or validate the existing credentials. Exception: %s", str(e))
+ raise ValidationError("Invalid Credentials: "+ str(e))
+ except Exception as e:
+ self.log.error("Could not connect to Openstack. Exception: %s", str(e))
+ raise ValidationError("Connection Error: "+ str(e))
+
+ def delete_port_chain(self,port_chain_id):
+ "Delete port chain"
+ try:
+ result = self.portchain_drv.get_port_chain(port_chain_id)
+ port_chain = result.json()
+ self.log.debug("Port chain result is %s", port_chain)
+ port_pair_groups = port_chain["port_chain"]["port_pair_groups"]
+ self.portchain_drv.delete_port_chain(port_chain_id)
+
+ # Get port pairs and delete port pair groups
+ port_pairs = list()
+ self.log.debug("Port pair groups during delete is %s", port_pair_groups)
+ for port_pair_group_id in port_pair_groups:
+ result = self.portchain_drv.get_port_pair_group(port_pair_group_id)
+ port_pair_group = result.json()
+ self.log.debug("Port pair group result is %s", port_pair_group)
+ port_pairs.extend(port_pair_group["port_pair_group"]["port_pairs"])
+ self.portchain_drv.delete_port_pair_group(port_pair_group_id)
+
+ self.log.debug("Port pairs during delete is %s",port_pairs)
+
+ for port_pair_id in port_pairs:
+ self.portchain_drv.delete_port_pair(port_pair_id)
+ pass
+ except Exception as e:
+ self.log.error("Error while delete port chain with id %s, exception %s", port_chain_id,str(e))
+
+ def update_port_chain(self,port_chain_id,flow_classifier_list):
+ result = self.portchain_drv.get_port_chain(port_chain_id)
+ result.raise_for_status()
+ port_chain = result.json()['port_chain']
+ new_flow_classifier_list = list()
+ if port_chain and port_chain['flow_classifiers']:
+ new_flow_classifier_list.extend(port_chain['flow_classifiers'])
+ new_flow_classifier_list.extend(flow_classifier_list)
+ port_chain_id = self.portchain_drv.update_port_chain(port_chain['id'],flow_classifiers=new_flow_classifier_list)
+ return port_chain_id
+
+ def create_flow_classifer(self,classifier_name,classifier_dict):
+ "Create flow classifier"
+ flow_classifier_id = self.portchain_drv.create_flow_classifier(classifier_name,classifier_dict)
+ return flow_classifier_id
+
+ def delete_flow_classifier(self,classifier_id):
+ "Create flow classifier"
+ try:
+ self.portchain_drv.delete_flow_classifier(classifier_id)
+ except Exception as e:
+ self.log.error("Error while deleting flow classifier with id %s, exception %s", classifier_id,str(e))
+
+ def get_port_chain_list(self):
+ result = self.portchain_drv.get_port_chain_list()
+ port_chain_list = result.json()
+ if 'port_chains' in port_chain_list:
+ return port_chain_list['port_chains']
+
+
+class RwsdnAccountDriver(object):
+ """
+ Container class per sdn account
+ """
+ def __init__(self, logger, **kwargs):
+ self.log = logger
+ try:
+ self._driver = OpenstackL2PortChainingDriver(logger = self.log, **kwargs)
+ except (KeystoneExceptions.Unauthorized, KeystoneExceptions.AuthorizationFailure,
+ NeutronException.NotFound) as e:
+ raise
+ except Exception as e:
+ self.log.error("RwsdnOpenstackPlugin: OpenstackL2PortChainingDriver init failed. Exception: %s" %(str(e)))
+ raise
+
+ @property
+ def driver(self):
+ return self._driver
+
+
+class SdnOpenstackPlugin(GObject.Object, RwSdn.Topology):
+ instance_num = 1
+ def __init__(self):
+ GObject.Object.__init__(self)
+ self.log = logging.getLogger('rwsdn.openstack.%s' % SdnOpenstackPlugin.instance_num)
+ self.log.setLevel(logging.DEBUG)
+
+ self._rwlog_handler = None
+ self._account_drivers = dict()
+ SdnOpenstackPlugin.instance_num += 1
+
+ def _use_driver(self, account):
+ if self._rwlog_handler is None:
+ raise UninitializedPluginError("Must call init() in SDN plugin before use.")
+
+ if account.name not in self._account_drivers:
+ self.log.debug("Creating SDN OpenstackDriver")
+ kwargs = dict(username = account.openstack.key,
+ password = account.openstack.secret,
+ auth_url = account.openstack.auth_url,
+ project = account.openstack.tenant,
+ cert_validate = account.openstack.cert_validate,
+ user_domain = account.openstack.user_domain,
+ project_domain = account.openstack.project_domain,
+ region = account.openstack.region)
+ drv = RwsdnAccountDriver(self.log, **kwargs)
+ self._account_drivers[account.name] = drv
+ return drv.driver
+ else:
+ return self._account_drivers[account.name].driver
+
+ @rwstatus
+ def do_init(self, rwlog_ctx):
+ self._rwlog_handler = rwlogger.RwLogger(
+ category="rw-cal-log",
+ subcategory="openstack",
+ log_hdl=rwlog_ctx,
+ )
+ self.log.addHandler(self._rwlog_handler)
+ self.log.propagate = False
+
+ @rwstatus(ret_on_failure=[None])
+ def do_validate_sdn_creds(self, account):
+ """
+ Validates the sdn account credentials for the specified account.
+ Performs an access to the resources using Keystone API. If creds
+ are not valid, returns an error code & reason string
+
+ @param account - a SDN account
+
+ Returns:
+ Validation Code and Details String
+ """
+ status = RwsdnYang.SdnConnectionStatus()
+ drv = self._use_driver(account)
+ try:
+ drv.validate_account_creds()
+
+ except openstack_drv.ValidationError as e:
+ self.log.error("SdnOpenstackPlugin: OpenstackDriver credential validation failed. Exception: %s", str(e))
+ status.status = "failure"
+ status.details = "Invalid Credentials: %s" % str(e)
+
+ except Exception as e:
+ msg = "SdnOpenstackPlugin: OpenstackDriver connection failed. Exception: %s" %(str(e))
+ self.log.error(msg)
+ status.status = "failure"
+ status.details = msg
+
+ else:
+ status.status = "success"
+ status.details = "Connection was successful"
+
+ return status
+
+ @rwstatus(ret_on_failure=[""])
+ def do_create_vnffg_chain(self, account,vnffg):
+ """
+ Creates Service Function chain in ODL
+
+ @param account - a SDN account
+
+ """
+ self.log.debug('Received Create VNFFG chain for account {}, chain {}'.format(account,vnffg))
+ drv = self._use_driver(account)
+ port_list = list()
+ vnf_chain_list = sorted(vnffg.vnf_chain_path, key = lambda x: x.order)
+ prev_vm_id = None
+ for path in vnf_chain_list:
+ if prev_vm_id and path.vnfr_ids[0].vdu_list[0].vm_id == prev_vm_id:
+ prev_entry = port_list.pop()
+ port_list.append((prev_entry[0],path.vnfr_ids[0].vdu_list[0].port_id))
+ prev_vm_id = None
+ else:
+ prev_vm_id = path.vnfr_ids[0].vdu_list[0].vm_id
+ port_list.append((path.vnfr_ids[0].vdu_list[0].port_id,path.vnfr_ids[0].vdu_list[0].port_id))
+ vnffg_id = drv.create_port_chain(vnffg.name,port_list)
+ return vnffg_id
+
+ @rwstatus
+ def do_terminate_vnffg_chain(self, account,vnffg_id):
+ """
+ Terminate Service Function chain in ODL
+
+ @param account - a SDN account
+ """
+ self.log.debug('Received terminate VNFFG chain for id %s ', vnffg_id)
+ drv = self._use_driver(account)
+ drv.delete_port_chain(vnffg_id)
+
+ @rwstatus(ret_on_failure=[None])
+ def do_create_vnffg_classifier(self, account, vnffg_classifier):
+ """
+ Add VNFFG Classifier
+
+ @param account - a SDN account
+ """
+ self.log.debug('Received Create VNFFG classifier for account {}, classifier {}'.format(account,vnffg_classifier))
+ protocol_map = {1:'ICMP',6:'TCP',17:'UDP'}
+ flow_classifier_list = list()
+ drv = self._use_driver(account)
+ for rule in vnffg_classifier.match_attributes:
+ classifier_name = vnffg_classifier.name + '_' + rule.name
+ flow_dict = {}
+ for field, value in rule.as_dict().items():
+ if field == 'ip_proto':
+ flow_dict['protocol'] = protocol_map.get(value,None)
+ elif field == 'source_ip_address':
+ flow_dict['source_ip_prefix'] = value
+ elif field == 'destination_ip_address':
+ flow_dict['destination_ip_prefix'] = value
+ elif field == 'source_port':
+ flow_dict['source_port_range_min'] = value
+ flow_dict['source_port_range_max'] = value
+ elif field == 'destination_port':
+ flow_dict['destination_port_range_min'] = value
+ flow_dict['destination_port_range_max'] = value
+ if vnffg_classifier.has_field('port_id'):
+ flow_dict['logical_source_port'] = vnffg_classifier.port_id
+ flow_classifier_id = drv.create_flow_classifer(classifier_name, flow_dict)
+ flow_classifier_list.append(flow_classifier_id)
+ drv.update_port_chain(vnffg_classifier.rsp_id,flow_classifier_list)
+ return flow_classifier_list
+
+ @rwstatus(ret_on_failure=[None])
+ def do_terminate_vnffg_classifier(self, account, vnffg_classifier_list):
+ """
+ Add VNFFG Classifier
+
+ @param account - a SDN account
+ """
+ self.log.debug('Received terminate VNFFG classifier for id %s ', vnffg_classifier_list)
+ drv = self._use_driver(account)
+ for classifier_id in vnffg_classifier_list:
+ drv.delete_flow_classifier(classifier_id)
+
+ @rwstatus(ret_on_failure=[None])
+ def do_get_vnffg_rendered_paths(self, account):
+ """
+ Get Rendered Service Path List (SFC)
+
+ @param account - a SDN account
+ """
+ self.log.debug('Received get VNFFG rendered path for account %s ', account)
+ vnffg_rsps = RwsdnYang.VNFFGRenderedPaths()
+ drv = self._use_driver(account)
+ port_chain_list = drv.get_port_chain_list()
+ for port_chain in port_chain_list:
+ #rsp = vnffg_rsps.vnffg_rendered_path.add()
+ #rsp.name = port_chain['name']
+ pass
+ return vnffg_rsps
+
+
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