Bug fixed Arista SDN plugin 92/8492/11
authorperales <oscarluis.peral@atos.net>
Fri, 17 Jan 2020 14:55:13 +0000 (15:55 +0100)
committerperales <oscarluis.peral@atos.net>
Thu, 27 Feb 2020 10:31:04 +0000 (11:31 +0100)
Change-Id: I35098d3dc9e6f6f8eea0cb749e1b7a314a8aa863
Signed-off-by: perales <oscarluis.peral@atos.net>
Dockerfile-local
RO-SDN-arista/Makefile [new file with mode: 0644]
RO-SDN-arista/osm_rosdn_arista/aristaConfigLet.py [new file with mode: 0644]
RO-SDN-arista/osm_rosdn_arista/aristaSwitch.py [new file with mode: 0644]
RO-SDN-arista/osm_rosdn_arista/aristaTask.py [new file with mode: 0644]
RO-SDN-arista/osm_rosdn_arista/wimconn_arista.py [new file with mode: 0644]
RO-SDN-arista/requirements.txt [new file with mode: 0644]
RO-SDN-arista/setup.py [new file with mode: 0644]
RO-SDN-arista/stdeb.cfg [new file with mode: 0644]
RO-SDN-arista/tox.ini [new file with mode: 0644]

index 385e656..8c7e83c 100644 (file)
@@ -58,6 +58,7 @@ RUN /root/RO/RO/osm_ro/scripts/install-osm-im.sh --develop && \
     python3 -m pip install -e /root/RO/RO-SDN-onos_vpls && \
     python3 -m pip install -e /root/RO/RO-SDN-onos_openflow && \
     python3 -m pip install -e /root/RO/RO-SDN-floodlight_openflow && \
     python3 -m pip install -e /root/RO/RO-SDN-onos_vpls && \
     python3 -m pip install -e /root/RO/RO-SDN-onos_openflow && \
     python3 -m pip install -e /root/RO/RO-SDN-floodlight_openflow && \
+    python3 -m pip install -e /root/RO/RO-SDN-arista && \
     rm -rf /root/.cache && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
     rm -rf /root/.cache && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
diff --git a/RO-SDN-arista/Makefile b/RO-SDN-arista/Makefile
new file mode 100644 (file)
index 0000000..6117980
--- /dev/null
@@ -0,0 +1,24 @@
+##
+# 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.
+##
+
+all: clean package
+
+clean:
+       rm -rf dist deb_dist osm_rosdn_arista-*.tar.gz osm_rosdn_arista.egg-info .eggs
+
+package:
+       python3 setup.py --command-packages=stdeb.command sdist_dsc
+       cd deb_dist/osm-rosdn-arista*/ && dpkg-buildpackage -rfakeroot -uc -us
+
diff --git a/RO-SDN-arista/osm_rosdn_arista/aristaConfigLet.py b/RO-SDN-arista/osm_rosdn_arista/aristaConfigLet.py
new file mode 100644 (file)
index 0000000..bceaa3c
--- /dev/null
@@ -0,0 +1,106 @@
+# -*- coding: utf-8 -*-\r
+##\r
+# Copyright 2019 Atos - CoE Telco NFV Team\r
+# All Rights Reserved.\r
+#\r
+# Contributors: Oscar Luis Peral, Atos\r
+#\r
+# Licensed under the Apache License, Version 2.0 (the "License"); you may\r
+# not use this file except in compliance with the License. You may obtain\r
+# a copy of the License at\r
+#\r
+#         http://www.apache.org/licenses/LICENSE-2.0\r
+#\r
+# Unless required by applicable law or agreed to in writing, software\r
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\r
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\r
+# License for the specific language governing permissions and limitations\r
+# under the License.\r
+#\r
+# For those usages not covered by the Apache License, Version 2.0 please\r
+# contact with: <oscarluis.peral@atos.net>\r
+#\r
+# Neither the name of Atos nor the names of its\r
+# contributors may be used to endorse or promote products derived from\r
+# this software without specific prior written permission.\r
+#\r
+# This work has been performed in the context of Arista Telefonica OSM PoC.\r
+##\r
+\r
+\r
+class AristaSDNConfigLet:\r
+    _configLet_SRIOV = """\r
+!# service: {}\r
+interface {}\r
+   switchport\r
+   switchport mode trunk\r
+   switchport trunk group {}{}\r
+!\r
+"""\r
+\r
+    def _get_sriov(self, uuid, interface, vlan_id, s_type, index):\r
+        return self._configLet_SRIOV.format(uuid, interface, s_type, vlan_id)\r
+\r
+    def getElan_sriov(self, uuid, interface, vlan_id, index):\r
+        return self._get_sriov(uuid, interface, vlan_id, "ELAN", index)\r
+\r
+    def getEline_sriov(self, uuid, interface, vlan_id, index):\r
+        return self._get_sriov(uuid, interface, vlan_id, "ELINE", index)\r
+\r
+    _configLet_PASSTROUGH = """\r
+!# service: {}\r
+interface {}\r
+   switchport\r
+   switchport mode access\r
+   switchport access vlan {}\r
+!\r
+"""\r
+\r
+    def _get_passthrough(self, uuid, interface, vlan_id, s_type, index):\r
+        return self._configLet_PASSTROUGH.format(uuid, interface, vlan_id)\r
+\r
+    def getElan_passthrough(self, uuid, interface, vlan_id, index):\r
+        return self._get_passthrough(uuid, interface, vlan_id, "ELAN", index)\r
+\r
+    def getEline_passthrough(self, uuid, interface, vlan_id, index):\r
+        return self._get_passthrough(uuid, interface, vlan_id, "ELINE", index)\r
+\r
+    _configLet_VLAN = """\r
+!## service: {service} {vlan} {uuid}\r
+vlan {vlan}\r
+   name {service}{vlan}\r
+   trunk group {service}{vlan}\r
+   trunk group MLAGPEER\r
+\r
+interface VXLAN1\r
+   VXLAN vlan {vlan} vni {vni}\r
+!\r
+"""\r
+\r
+    def _get_vlan(self, uuid, vlan_id, vni_id, s_type):\r
+        return self._configLet_VLAN.format(service=s_type, vlan=vlan_id, uuid=uuid, vni=vni_id)\r
+\r
+    def getElan_vlan(self, uuid, vlan_id, vni_id):\r
+        return self._get_vlan(uuid, vlan_id, vni_id, "ELAN")\r
+\r
+    def getEline_vlan(self, uuid, vlan_id, vni_id):\r
+        return self._get_vlan(uuid, vlan_id, vni_id, "ELINE")\r
+\r
+    _configLet_BGP = """\r
+!# service: {uuid}\r
+router bgp {bgp}\r
+    vlan {vlan}\r
+        rd {loopback}:{vni}\r
+        route-target both {vni}:{vni}\r
+        redistribute learned\r
+!\r
+"""\r
+\r
+    def _get_bgp(self, uuid, vlan_id, vni_id, loopback0, bgp, s_type):\r
+        return self._configLet_BGP.format(uuid=uuid, bgp=bgp, vlan=vlan_id, loopback=loopback0, vni=vni_id)\r
+\r
+    def getElan_bgp(self, uuid, vlan_id, vni_id, loopback0, bgp):\r
+        return self._get_bgp(uuid, vlan_id, vni_id, loopback0, bgp, "ELAN")\r
+\r
+    def getEline_bgp(self, uuid, vlan_id, vni_id, loopback0, bgp):\r
+        return self._get_bgp(uuid, vlan_id, vni_id, loopback0, bgp, "ELINE")\r
diff --git a/RO-SDN-arista/osm_rosdn_arista/aristaSwitch.py b/RO-SDN-arista/osm_rosdn_arista/aristaSwitch.py
new file mode 100644 (file)
index 0000000..840f3a9
--- /dev/null
@@ -0,0 +1,108 @@
+# -*- coding: utf-8 -*-\r
+##\r
+# Copyright 2019 Atos - CoE Telco NFV Team\r
+# All Rights Reserved.\r
+#\r
+# Contributors: Oscar Luis Peral, Atos\r
+#\r
+# Licensed under the Apache License, Version 2.0 (the "License"); you may\r
+# not use this file except in compliance with the License. You may obtain\r
+# a copy of the License at\r
+#\r
+#         http://www.apache.org/licenses/LICENSE-2.0\r
+#\r
+# Unless required by applicable law or agreed to in writing, software\r
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\r
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\r
+# License for the specific language governing permissions and limitations\r
+# under the License.\r
+#\r
+# For those usages not covered by the Apache License, Version 2.0 please\r
+# contact with: <oscarluis.peral@atos.net>\r
+#\r
+# Neither the name of Atos nor the names of its\r
+# contributors may be used to endorse or promote products derived from\r
+# this software without specific prior written permission.\r
+#\r
+# This work has been performed in the context of Arista Telefonica OSM PoC.\r
+##\r
+\r
+from jsonrpclib import Server\r
+import socket\r
+import ssl\r
+\r
+\r
+class AristaSwitch():\r
+    """\r
+    Used to run switch commands through eAPI and check command output\r
+    """\r
+\r
+    def __init__(self, name=None, host=None, user=None, passwd=None,\r
+                 verify_ssl=False, unix_socket=None,\r
+                 logger=None):\r
+\r
+        self.host = host\r
+        self.user = user\r
+        self.passwd = passwd\r
+\r
+        self.unix_socket = unix_socket\r
+        self.local_ep = Server(unix_socket) \\r
+            if unix_socket is not None else None\r
+\r
+        s = "https://{user}:{passwd}@{host}/command-api"\r
+        self.url = s.format(user=user, passwd=passwd, host=host)\r
+        self.ep = Server(self.url)\r
+        self.verify_ssl = verify_ssl\r
+        if not self.verify_ssl:\r
+            try:\r
+                ssl._create_default_https_context = ssl.\\r
+                                                    _create_unverified_context\r
+            except AttributeError:\r
+                # Old python versions do not verify certs by default\r
+                pass\r
+\r
+        self.log = logger\r
+\r
+    def _multilinestr_to_list(self, multilinestr=None):\r
+        """\r
+        Returns a list, each item been one line of a (multi)line string\r
+        Handy for running multiple lines commands through one API call\r
+        """\r
+        mylist = \\r
+            [x.strip() for x in multilinestr.split('\n') if x.strip() != '']\r
+        return mylist\r
+\r
+    def run(self, cmds=None, timeout=10, local_run=False):\r
+        """\r
+        Runs commands through eAPI\r
+\r
+        If local_run is True eAPI call will be done using local unix socket\r
+        If local run is False eAPI call will be done using TCPIP\r
+        """\r
+        socket.setdefaulttimeout(timeout)\r
+\r
+        r = None\r
+\r
+        if type(cmds) is str:\r
+            run_list = self._multilinestr_to_list(cmds)\r
+\r
+        if type(cmds) is list:\r
+            run_list = cmds\r
+\r
+        if local_run:\r
+            ep = self.local_ep\r
+            ep_log = "local unix socket {}".format(str(self.unix_socket))\r
+        else:\r
+            ep = self.ep\r
+            ep_log = "tcpip socket {}".format(str(self.host))\r
+\r
+        self.log.debug("Calling eAPI at {} with commands {}".\r
+                       format(ep_log, str(run_list)))\r
+\r
+        try:\r
+            r = ep.runCmds(1, run_list)\r
+        except Exception as e:\r
+            self.log.error(str(e))\r
+            raise(e)\r
+\r
+        return r\r
diff --git a/RO-SDN-arista/osm_rosdn_arista/aristaTask.py b/RO-SDN-arista/osm_rosdn_arista/aristaTask.py
new file mode 100644 (file)
index 0000000..a338afd
--- /dev/null
@@ -0,0 +1,132 @@
+# -*- coding: utf-8 -*-\r
+##\r
+# Copyright 2019 Atos - CoE Telco NFV Team\r
+# All Rights Reserved.\r
+#\r
+# Contributors: Oscar Luis Peral, Atos\r
+#\r
+# Licensed under the Apache License, Version 2.0 (the "License"); you may\r
+# not use this file except in compliance with the License. You may obtain\r
+# a copy of the License at\r
+#\r
+#         http://www.apache.org/licenses/LICENSE-2.0\r
+#\r
+# Unless required by applicable law or agreed to in writing, software\r
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\r
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\r
+# License for the specific language governing permissions and limitations\r
+# under the License.\r
+#\r
+# For those usages not covered by the Apache License, Version 2.0 please\r
+# contact with: <oscarluis.peral@atos.net>\r
+#\r
+# Neither the name of Atos nor the names of its\r
+# contributors may be used to endorse or promote products derived from\r
+# this software without specific prior written permission.\r
+#\r
+# This work has been performed in the context of Arista Telefonica OSM PoC.\r
+##\r
+import time\r
+\r
+\r
+class AristaCVPTask:\r
+    def __init__(self, cvpClientApi):\r
+        self.cvpClientApi = cvpClientApi\r
+\r
+    def __get_id(self, task):\r
+        return task.get("workOrderId")\r
+\r
+    def __get_state(self, task):\r
+        return task.get("workOrderUserDefinedStatus")\r
+\r
+    def __execute_task(self, task_id):\r
+        return self.cvpClientApi.execute_task(task_id)\r
+\r
+    def __cancel_task(self, task_id):\r
+        return self.cvpClientApi.cancel_task(task_id)\r
+\r
+    def __apply_state(self, task, state):\r
+        t_id = self.__get_id(task)\r
+        self.cvpClientApi.add_note_to_task(t_id, "Executed by OSM")\r
+        if state == "executed":\r
+            return self.__execute_task(t_id)\r
+        elif state == "cancelled":\r
+            return self.__cancel_task(t_id)\r
+\r
+    def __actionable(self, state):\r
+        return state in ["Pending"]\r
+\r
+    def __terminal(self, state):\r
+        return state in ["Completed", "Cancelled"]\r
+\r
+    def __state_is_different(self, task, target):\r
+        return self.__get_state(task) != target\r
+\r
+    def update_all_tasks(self, data):\r
+        new_data = dict()\r
+        for task_id in data.keys():\r
+            res = self.cvpClientApi.get_task_by_id(task_id)\r
+            new_data[task_id] = res\r
+        return new_data\r
+\r
+    def get_pending_tasks(self):\r
+        return self.cvpClientApi.get_tasks_by_status('Pending')\r
+\r
+    def get_pending_tasks_old(self):\r
+        taskList = []\r
+        tasksField = {'workOrderId': 'workOrderId',\r
+                      'workOrderState': 'workOrderState',\r
+                      'currentTaskName': 'currentTaskName',\r
+                      'description': 'description',\r
+                      'workOrderUserDefinedStatus':\r
+                      'workOrderUserDefinedStatus',\r
+                      'note': 'note',\r
+                      'taskStatus': 'taskStatus',\r
+                      'workOrderDetails': 'workOrderDetails'}\r
+        tasks = self.cvpClientApi.get_tasks_by_status('Pending')\r
+        # Reduce task data to required fields\r
+        for task in tasks:\r
+            taskFacts = {}\r
+            for field in task.keys():\r
+                if field in tasksField:\r
+                    taskFacts[tasksField[field]] = task[field]\r
+            taskList.append(taskFacts)\r
+        return taskList\r
+\r
+    def task_action(self, tasks, wait, state):\r
+        changed = False\r
+        data = dict()\r
+        warnings = list()\r
+\r
+        at = [t for t in tasks if self.__actionable(self.__get_state(t))]\r
+        actionable_tasks = at\r
+\r
+        if len(actionable_tasks) == 0:\r
+            warnings.append("No actionable tasks found on CVP")\r
+            return changed, data, warnings\r
+\r
+        for task in actionable_tasks:\r
+            if self.__state_is_different(task, state):\r
+                self.__apply_state(task, state)\r
+                changed = True\r
+                data[self.__get_id(task)] = task\r
+\r
+        if wait == 0:\r
+            return changed, data, warnings\r
+\r
+        start = time.time()\r
+        now = time.time()\r
+        while (now - start) < wait:\r
+            data = self.update_all_tasks(data)\r
+            if all([self.__terminal(self.__get_state(t)) for t in data.values()]):\r
+                break\r
+            time.sleep(1)\r
+            now = time.time()\r
+\r
+        if wait:\r
+            for i, task in data.items():\r
+                if not self.__terminal(self.__get_state(task)):\r
+                    warnings.append("Task {} has not completed in {} seconds".\r
+                                    format(i, wait))\r
+\r
+        return changed, data, warnings\r
diff --git a/RO-SDN-arista/osm_rosdn_arista/wimconn_arista.py b/RO-SDN-arista/osm_rosdn_arista/wimconn_arista.py
new file mode 100644 (file)
index 0000000..b0e5b13
--- /dev/null
@@ -0,0 +1,1500 @@
+# -*- coding: utf-8 -*-
+##
+# Copyright 2019 Atos - CoE Telco NFV Team
+# All Rights Reserved.
+#
+# Contributors: Oscar Luis Peral, Atos
+#
+# 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.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact with: <oscarluis.peral@atos.net>
+#
+# Neither the name of Atos nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# This work has been performed in the context of Arista Telefonica OSM PoC.
+##
+from osm_ro.wim.sdnconn import SdnConnectorBase, SdnConnectorError
+import re
+import socket
+# Required by compare function
+import difflib
+# Library that uses Levenshtein Distance to calculate the differences
+# between strings.
+# from fuzzywuzzy import fuzz
+
+import logging
+import uuid
+from enum import Enum
+
+from cvprac.cvp_client import CvpClient
+from cvprac.cvp_client_errors import CvpLoginError,  CvpSessionLogOutError, CvpApiError
+
+from osm_rosdn_arista.aristaSwitch import AristaSwitch
+from osm_rosdn_arista.aristaConfigLet import AristaSDNConfigLet
+from osm_rosdn_arista.aristaTask import AristaCVPTask
+
+
+class SdnError(Enum):
+    UNREACHABLE = 'Unable to reach the WIM.',
+    VLAN_INCONSISTENT = \
+        'VLAN value inconsistent between the connection points',
+    VLAN_NOT_PROVIDED = 'VLAN value not provided',
+    CONNECTION_POINTS_SIZE = \
+        'Unexpected number of connection points: 2 expected.',
+    ENCAPSULATION_TYPE = \
+        'Unexpected service_endpoint_encapsulation_type. \
+         Only "dotq1" is accepted.',
+    BANDWIDTH = 'Unable to get the bandwidth.',
+    STATUS = 'Unable to get the status for the service.',
+    DELETE = 'Unable to delete service.',
+    CLEAR_ALL = 'Unable to clear all the services',
+    UNKNOWN_ACTION = 'Unknown action invoked.',
+    BACKUP = 'Unable to get the backup parameter.',
+    UNSUPPORTED_FEATURE = "Unsupported feature",
+    UNAUTHORIZED = "Failed while authenticating",
+    INTERNAL_ERROR = "Internal error"
+
+
+class AristaSdnConnector(SdnConnectorBase):
+    """Arista class for the SDN connectors
+
+    Arguments:
+        wim (dict): WIM record, as stored in the database
+        wim_account (dict): WIM account record, as stored in the database
+        config
+    The arguments of the constructor are converted to object attributes.
+    An extra property, ``service_endpoint_mapping`` is created from ``config``.
+
+    The access to Arista CloudVision is made through the API defined in
+        https://github.com/aristanetworks/cvprac
+    The a connectivity service consist in creating a VLAN and associate the interfaces
+    of the connection points MAC addresses to this VLAN in all the switches of the topology,
+    the BDP is also configured for this VLAN.
+
+    The Arista Cloud Vision API workflow is the following
+    -- The switch configuration is defined as a set of switch configuration commands,
+       what is called 'ConfigLet'
+    -- The ConfigLet is associated to the device (leaf switch)
+    -- Automatically a task is associated to this activity for change control, the task
+       in this stage is in 'Pending' state
+    -- The task will be executed so that the configuration is applied to the switch.
+    -- The service information is saved in the response of the creation call
+    -- All created services identification is stored in a generic ConfigLet 'OSM_metadata'
+       to keep track of the managed resources by OSM in the Arista deployment.
+    """
+    __supported_service_types = ["ELINE (L2)", "ELINE", "ELAN"]
+    __service_types_ELAN = "ELAN"
+    __service_types_ELINE = "ELINE"
+    __ELINE_num_connection_points = 2
+    __supported_service_types = ["ELINE", "ELAN"]
+    __supported_encapsulation_types = ["dot1q"]
+    __WIM_LOGGER = 'openmano.sdnconn.arista'
+    __ENCAPSULATION_TYPE_PARAM = "service_endpoint_encapsulation_type"
+    __ENCAPSULATION_INFO_PARAM = "service_endpoint_encapsulation_info"
+    __BACKUP_PARAM = "backup"
+    __BANDWIDTH_PARAM = "bandwidth"
+    __SERVICE_ENDPOINT_PARAM = "service_endpoint_id"
+    __MAC_PARAM = "mac"
+    __WAN_SERVICE_ENDPOINT_PARAM = "service_endpoint_id"
+    __WAN_MAPPING_INFO_PARAM = "service_mapping_info"
+    __DEVICE_ID_PARAM = "device_id"
+    __DEVICE_INTERFACE_ID_PARAM = "device_interface_id"
+    __SW_ID_PARAM = "switch_dpid"
+    __SW_PORT_PARAM = "switch_port"
+    __VLAN_PARAM = "vlan"
+    __VNI_PARAM = "vni"
+    __SEPARATOR = '_'
+    __OSM_PREFIX = "osm_"
+    __OSM_METADATA = "OSM_metadata"
+    __METADATA_PREFIX = '!## Service'
+    __EXC_TASK_EXEC_WAIT = 1
+    __ROLLB_TASK_EXEC_WAIT = 5
+
+    def __init__(self, wim, wim_account, config=None, logger=None):
+        """
+
+        :param wim: (dict). Contains among others 'wim_url'
+        :param wim_account: (dict). Contains among others 'uuid' (internal id), 'name',
+            'sdn' (True if is intended for SDN-assist or False if intended for WIM), 'user', 'password'.
+        :param config: (dict or None): Particular information of plugin. These keys if present have a common meaning:
+            'mapping_not_needed': (bool) False by default or if missing, indicates that mapping is not needed.
+            'service_endpoint_mapping': (list) provides the internal endpoint mapping. The meaning is:
+                KEY                    meaning for WIM                 meaning for SDN assist
+                --------                --------                    --------
+                device_id                      pop_switch_dpid                 compute_id
+                device_interface_id            pop_switch_port                 compute_pci_address
+                service_endpoint_id        wan_service_endpoint_id     SDN_service_endpoint_id
+                service_mapping_info   wan_service_mapping_info    SDN_service_mapping_info
+                    contains extra information if needed. Text in Yaml format
+                switch_dpid                    wan_switch_dpid                 SDN_switch_dpid
+                switch_port                    wan_switch_port                 SDN_switch_port
+                datacenter_id           vim_account                 vim_account
+                id: (internal, do not use)
+                wim_id: (internal, do not use)
+        :param logger (logging.Logger): optional logger object. If none is passed 'openmano.sdn.sdnconn' is used.
+        """
+        self.__regex = re.compile(
+            r'^(?:http|ftp)s?://'  # http:// or https://
+            r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|'  # domain...
+            r'localhost|'  # localhost...
+            r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'  # ...or ip
+            r'(?::\d+)?', re.IGNORECASE)  # optional port
+        self.raiseException = True
+        self.logger = logger or logging.getLogger(self.__WIM_LOGGER)
+        super().__init__(wim, wim_account, config, self.logger)
+        self.__wim = wim
+        self.__wim_account = wim_account
+        self.__config = config
+        if self.is_valid_destination(self.__wim.get("wim_url")):
+            self.__wim_url = self.__wim.get("wim_url")
+        else:
+            raise SdnConnectorError(message='Invalid wim_url value',
+                                    http_code=500)
+        self.__user = wim_account.get("user")
+        self.__passwd = wim_account.get("password")
+        self.client = None
+        self.cvp_inventory = None
+        self.logger.debug("Arista SDN assist {}, user:{} and conf:{}".
+                          format(wim, self.__user, config))
+        self.allDeviceFacts = []
+        self.__load_switches()
+        self.clC = AristaSDNConfigLet()
+        self.taskC = None
+        self.sw_loopback0 = {}
+        self.bgp = {}
+
+        for s in self.s_api:
+            # Each switch has a different loopback address,
+            # so it's a different configLet
+            inf = self.__get_switch_interface_ip(s, 'Loopback0')
+            self.sw_loopback0[s] = inf.split('/')[0]
+            self.bgp[s] = self.__get_switch_asn(s)
+
+    def __load_switches(self):
+        """ Retrieves the switches to configure in the following order
+        1.- from incomming configuration
+        2.- Looking in the CloudVision inventory for those switches whose hostname starts with 'leaf'
+        """
+        if not self.__config or not self.__config.get('switches'):
+            if self.client is None:
+                self.client = self.__connect()
+            self.__load_inventory()
+            self.switches = {}
+            for device in self.allDeviceFacts:
+                if device['hostname'].startswith('Leaf'):
+                    switch_data = {"passwd": self.__passwd,
+                                   "ip": device['ipAddress'],
+                                   "usr": self.__user}
+                    self.switches[device['hostname']] = switch_data
+            if len(self.switches) == 0:
+                self.logger.error("Unable to load Leaf switches from CVP")
+                return
+        else:
+            # directly json
+            self.switches = self.__config.get['switches']
+        # self.s_api are switch objects, one for each switch in self.switches,
+        # used to make eAPI calls by using switch.py module
+        self.s_api = {}
+        for s in self.switches:
+            self.logger.debug("Using Arista Leaf switch: {} {} {}".format(
+                                s,
+                                self.switches[s]["ip"],
+                                self.switches[s]["usr"]))
+            if self.is_valid_destination(self.switches[s]["ip"]):
+                self.s_api[s] = AristaSwitch(host=self.switches[s]["ip"],
+                                             user=self.switches[s]["usr"],
+                                             passwd=self.switches[s]["passwd"],
+                                             logger=self.logger)
+
+    def __lldp_find_neighbor(self, tlv_name=None, tlv_value=None):
+        """Returns a list of dicts where a mathing LLDP neighbor has been found
+           Each dict has:
+             switch -> switch name
+             interface -> switch interface
+        """
+        r = []
+        lldp_info = {}
+
+        # Get LLDP info from each switch
+        for s in self.s_api:
+            result = self.s_api[s].run("show lldp neighbors detail")
+            lldp_info[s] = result[0]["lldpNeighbors"]
+            # Look LLDP match on each interface
+            # Note that eAPI returns [] for an interface with no LLDP neighbors
+            # in the corresponding interface lldpNeighborInfo field
+            for interface in lldp_info[s]:
+                if lldp_info[s][interface]["lldpNeighborInfo"]:
+                    lldp_nInf = lldp_info[s][interface]["lldpNeighborInfo"][0]
+                    if tlv_name in lldp_nInf:
+                        if lldp_nInf[tlv_name] == tlv_value:
+                            r.append({"name": s, "interface": interface})
+
+        return r
+
+    def __get_switch_asn(self, switch):
+        """Returns switch ASN in default VRF
+        """
+        bgp_info = self.s_api[switch].run("show ip bgp summary")[0]
+        return(bgp_info["vrfs"]["default"]["asn"])
+
+    def __get_switch_po(self, switch, interface=None):
+        """Returns Port-Channels for a given interface
+           If interface is None returns a list with all PO interfaces
+           Note that if specified, interface should be exact name
+           for instance: Ethernet3 and not e3 eth3 and so on
+        """
+        po_inf = self.s_api[switch].run("show port-channel")[0]["portChannels"]
+
+        if interface:
+            r = [x for x in po_inf if interface in po_inf[x]["activePorts"]]
+        else:
+            r = po_inf
+
+        return r
+
+    def __get_switch_interface_ip(self, switch, interface=None):
+        """Returns interface primary ip
+           interface should be exact name
+           for instance: Ethernet3 and not ethernet 3, e3 eth3 and so on
+        """
+        cmd = "show ip interface {}".format(interface)
+        ip_info = self.s_api[switch].run(cmd)[0]["interfaces"][interface]
+
+        ip = ip_info["interfaceAddress"]["primaryIp"]["address"]
+        mask = ip_info["interfaceAddress"]["primaryIp"]["maskLen"]
+
+        return "{}/{}".format(ip, mask)
+
+    def __check_service(self, service_type, connection_points,
+                        check_vlan=True, check_num_cp=True, kwargs=None):
+        """ Reviews the connection points elements looking for semantic errors in the incoming data
+        """
+        if service_type not in self.__supported_service_types:
+            raise Exception("The service '{}' is not supported. Only '{}' are accepted".format(
+                            service_type,
+                            self.__supported_service_types))
+
+        if check_num_cp:
+            if (len(connection_points) < 2):
+                raise Exception(SdnError.CONNECTION_POINTS_SIZE)
+            if ((len(connection_points) != self.__ELINE_num_connection_points) and
+               (service_type == self.__service_types_ELINE)):
+                raise Exception(SdnError.CONNECTION_POINTS_SIZE)
+
+        if check_vlan:
+            vlan_id = ''
+            for cp in connection_points:
+                enc_type = cp.get(self.__ENCAPSULATION_TYPE_PARAM)
+                if (enc_type and
+                        enc_type not in self.__supported_encapsulation_types):
+                    raise Exception(SdnError.ENCAPSULATION_TYPE)
+                encap_info = cp.get(self.__ENCAPSULATION_INFO_PARAM)
+                cp_vlan_id = str(encap_info.get(self.__VLAN_PARAM))
+                if cp_vlan_id:
+                    if not vlan_id:
+                        vlan_id = cp_vlan_id
+                    elif vlan_id != cp_vlan_id:
+                        raise Exception(SdnError.VLAN_INCONSISTENT)
+            if not vlan_id:
+                raise Exception(SdnError.VLAN_NOT_PROVIDED)
+                if vlan_id in self.__get_srvVLANs():
+                    raise Exception('VLAN {} already assigned to a connectivity service'.format(vlan_id))
+
+        # Commented out for as long as parameter isn't implemented
+        # bandwidth = kwargs.get(self.__BANDWIDTH_PARAM)
+        # if not isinstance(bandwidth, int):
+            # self.__exception(SdnError.BANDWIDTH, http_code=400)
+
+        # Commented out for as long as parameter isn't implemented
+        # backup = kwargs.get(self.__BACKUP_PARAM)
+        # if not isinstance(backup, bool):
+            # self.__exception(SdnError.BACKUP, http_code=400)
+
+    def check_credentials(self):
+        """Retrieves the CloudVision version information, as the easiest way
+        for testing the access to CloudVision API
+        """
+        try:
+            if self.client is None:
+                self.client = self.__connect()
+            result = self.client.api.get_cvp_info()
+            self.logger.debug(result)
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except Exception as ex:
+            self.client = None
+            self.logger.error(str(ex))
+            raise SdnConnectorError(message=SdnError.INTERNAL_ERROR,
+                                    http_code=500) from ex
+
+    def get_connectivity_service_status(self, service_uuid, conn_info=None):
+        """Monitor the status of the connectivity service established
+        Arguments:
+            service_uuid (str): UUID of the connectivity service
+            conn_info (dict or None): Information returned by the connector
+                during the service creation/edition and subsequently stored in
+                the database.
+
+        Returns:
+            dict: JSON/YAML-serializable dict that contains a mandatory key
+                ``sdn_status`` associated with one of the following values::
+
+                    {'sdn_status': 'ACTIVE'}
+                        # The service is up and running.
+
+                    {'sdn_status': 'INACTIVE'}
+                        # The service was created, but the connector
+                        # cannot determine yet if connectivity exists
+                        # (ideally, the caller needs to wait and check again).
+
+                    {'sdn_status': 'DOWN'}
+                        # Connection was previously established,
+                        # but an error/failure was detected.
+
+                    {'sdn_status': 'ERROR'}
+                        # An error occurred when trying to create the service/
+                        # establish the connectivity.
+
+                    {'sdn_status': 'BUILD'}
+                        # Still trying to create the service, the caller
+                        # needs to wait and check again.
+
+                Additionally ``error_msg``(**str**) and ``sdn_info``(**dict**)
+                keys can be used to provide additional status explanation or
+                new information available for the connectivity service.
+        """
+        try:
+            if not service_uuid:
+                raise SdnConnectorError(message='No connection service UUID',
+                                        http_code=500)
+
+            self.__get_Connection()
+            if conn_info is None:
+                raise SdnConnectorError(message='No connection information for service UUID {}'.format(service_uuid),
+                                        http_code=500)
+
+            if 'configLetPerSwitch' in conn_info.keys():
+                c_info = conn_info
+            else:
+                c_info = None
+            cls_perSw = self.__get_serviceData(service_uuid,
+                                               conn_info['service_type'],
+                                               conn_info['vlan_id'],
+                                               c_info)
+
+            t_isCancelled = False
+            t_isFailed = False
+            t_isPending = False
+            failed_switches = []
+            for s in self.s_api:
+                if (len(cls_perSw[s]) > 0):
+                    for cl in cls_perSw[s]:
+                        if len(cls_perSw[s][0]['config']) == 0:
+                            continue
+                        note = cl['note']
+                        t_id = note.split(self.__SEPARATOR)[1]
+                        result = self.client.api.get_task_by_id(t_id)
+                        if result['workOrderUserDefinedStatus'] == 'Completed':
+                            continue
+                        elif result['workOrderUserDefinedStatus'] == 'Cancelled':
+                            t_isCancelled = True
+                        elif result['workOrderUserDefinedStatus'] == 'Failed':
+                            t_isFailed = True
+                        else:
+                            t_isPending = True
+                        failed_switches.append(s)
+            if t_isCancelled:
+                error_msg = 'Some works were cancelled in switches: {}'.format(str(failed_switches))
+                sdn_status = 'DOWN'
+            elif t_isFailed:
+                error_msg = 'Some works failed in switches: {}'.format(str(failed_switches))
+                sdn_status = 'ERROR'
+            elif t_isPending:
+                error_msg = 'Some works are still under execution in switches: {}'.format(str(failed_switches))
+                sdn_status = 'BUILD'
+            else:
+                error_msg = ''
+                sdn_status = 'ACTIVE'
+            sdn_info = ''
+            return {'sdn_status': sdn_status,
+                    'error_msg': error_msg,
+                    'sdn_info': sdn_info}
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except Exception as ex:
+            self.client = None
+            self.logger.error(str(ex), exc_info=True)
+            raise SdnConnectorError(message=str(ex),
+                                    http_code=500) from ex
+
+    def create_connectivity_service(self, service_type, connection_points,
+                                    **kwargs):
+        """Stablish SDN/WAN connectivity between the endpoints
+        :param service_type:
+            (str): ``ELINE`` (L2), ``ELAN`` (L2), ``ETREE`` (L2), ``L3``.
+        :param connection_points:  (list): each point corresponds to
+            an entry point to be connected. For WIM: from the DC
+            to the transport network.
+            For SDN: Compute/PCI to the transport network. One
+            connection point serves to identify the specific access and
+            some other service parameters, such as encapsulation type.
+            Each item of the list is a dict with:
+                "service_endpoint_id": (str)(uuid)  Same meaning that for
+                    'service_endpoint_mapping' (see __init__)
+                    In case the config attribute mapping_not_needed is True,
+                    this value is not relevant. In this case
+                    it will contain the string "device_id:device_interface_id"
+                "service_endpoint_encapsulation_type": None, "dot1q", ...
+                "service_endpoint_encapsulation_info": (dict) with:
+                    "vlan": ..., (int, present if encapsulation is dot1q)
+                    "vni": ... (int, present if encapsulation is vxlan),
+                    "peers": [(ipv4_1), (ipv4_2)] (present if
+                        encapsulation is vxlan)
+                    "mac": ...
+                    "device_id": ..., same meaning that for
+                        'service_endpoint_mapping' (see __init__)
+                    "device_interface_id": same meaning that for
+                        'service_endpoint_mapping' (see __init__)
+                    "switch_dpid": ..., present if mapping has been found
+                        for this device_id,device_interface_id
+                    "swith_port": ... present if mapping has been found
+                        for this device_id,device_interface_id
+                    "service_mapping_info": present if mapping has
+                        been found for this device_id,device_interface_id
+        :param kwargs: For future versions:
+            bandwidth (int): value in kilobytes
+            latency (int): value in milliseconds
+            Other QoS might be passed as keyword arguments.
+        :return: tuple: ``(service_id, conn_info)`` containing:
+            - *service_uuid* (str): UUID of the established
+                    connectivity service
+            - *conn_info* (dict or None): Information to be
+                    stored at the database (or ``None``).
+                This information will be provided to the
+                    :meth:`~.edit_connectivity_service` and :obj:`~.delete`.
+                **MUST** be JSON/YAML-serializable (plain data structures).
+        :raises: SdnConnectorError: In case of error. Nothing should be
+                                    created in this case.
+            Provide the parameter http_code
+        """
+        try:
+            self.__get_Connection()
+            self.__check_service(service_type,
+                                 connection_points,
+                                 check_vlan=True,
+                                 kwargs=kwargs)
+            service_uuid = str(uuid.uuid4())
+
+            self.logger.info("Service with uuid {} created.".
+                             format(service_uuid))
+            s_uid, s_connInf = self.__processConnection(
+                                        service_uuid,
+                                        service_type,
+                                        connection_points,
+                                        kwargs)
+            try:
+                self.__addMetadata(s_uid, service_type, s_connInf['vlan_id'])
+            except Exception as e:
+                pass
+
+            return (s_uid, s_connInf)
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except SdnConnectorError as sde:
+            raise sde
+        except Exception as ex:
+            self.client = None
+            self.logger.error(str(ex), exc_info=True)
+            if self.raiseException:
+                raise ex
+            raise SdnConnectorError(message=str(ex),
+                                    http_code=500) from ex
+
+    def __processConnection(self,
+                            service_uuid,
+                            service_type,
+                            connection_points,
+                            kwargs):
+        """
+        Invoked from creation and edit methods
+
+        Process the connection points array,
+            creating a set of configuration per switch where it has to be applied
+            for creating the configuration, the switches have to be queried for obtaining:
+                - the loopback address
+                - the BGP ASN (autonomous system number)
+                - the interface name of the MAC address to add in the connectivity service
+        Once the new configuration is ready, the __updateConnection method is invoked for appling the changes
+        """
+        try:
+            cls_perSw = {}
+            cls_cp = {}
+            cl_bgp = {}
+            for s in self.s_api:
+                cls_perSw[s] = []
+                cls_cp[s] = []
+            vlan_processed = False
+            vlan_id = ''
+            i = 0
+            for cp in connection_points:
+                i += 1
+                encap_info = cp.get(self.__ENCAPSULATION_INFO_PARAM)
+                if not vlan_processed:
+                    vlan_id = str(encap_info.get(self.__VLAN_PARAM))
+                    if not vlan_id:
+                        continue
+                    vni_id = encap_info.get(self.__VNI_PARAM)
+                    if not vni_id:
+                        vni_id = str(10000 + int(vlan_id))
+
+                    if service_type == self.__service_types_ELAN:
+                        cl_vlan = self.clC.getElan_vlan(service_uuid,
+                                                        vlan_id,
+                                                        vni_id)
+                    else:
+                        cl_vlan = self.clC.getEline_vlan(service_uuid,
+                                                         vlan_id,
+                                                         vni_id)
+                    vlan_processed = True
+
+                encap_type = cp.get(self.__ENCAPSULATION_TYPE_PARAM)
+                switch_id = encap_info.get(self.__SW_ID_PARAM)
+                if not switch_id:
+                    point_mac = encap_info.get(self.__MAC_PARAM)
+                    switches = self.__lldp_find_neighbor("chassisId", point_mac)
+
+                    if len(switches) == 0:
+                        raise SdnConnectorError(message="Connection point MAC address {} not found in the switches".format(point_mac),
+                                                http_code=406)
+                    self.logger.debug("Found connection point for MAC {}: {}".
+                                      format(point_mac, switches))
+                    port_channel = self.__get_switch_po(switch['name'],
+                                                        switch['interface'])
+                    if len(port_channel) > 0:
+                        interface = port_channel[0]
+                    else:
+                        interface = switch['interface']
+                else:
+                    interface = encap_info.get(self.__SW_PORT_PARAM)
+                    switches = [{'name': switch_id, 'interface': interface}]
+
+                    if not interface:
+                        raise SdnConnectorError(message="Connection point switch port empty for switch_dpid {}".format(switch_id),
+                                                http_code=406)
+                for switch in switches:
+                    # it should be only one switch where the mac is attached
+                    if encap_type == 'dot1q':
+                        # SRIOV configLet for Leaf switch mac's attached to
+                        if service_type == self.__service_types_ELAN:
+                            cl_encap = self.clC.getElan_sriov(service_uuid, interface, vlan_id, i)
+                        else:
+                            cl_encap = self.clC.getEline_sriov(service_uuid, interface, vlan_id, i)
+                    elif not encap_type:
+                        # PT configLet for Leaf switch attached to the mac
+                        if service_type == self.__service_types_ELAN:
+                            cl_encap = self.clC.getElan_passthrough(service_uuid,
+                                                                    interface,
+                                                                    vlan_id, i)
+                        else:
+                            cl_encap = self.clC.getEline_passthrough(service_uuid,
+                                                                     interface,
+                                                                     vlan_id, i)
+                    if cls_cp.get(switch['name']):
+                        cls_cp[switch['name']] = str(cls_cp[switch['name']]) + cl_encap
+                    else:
+                        cls_cp[switch['name']] = cl_encap
+
+            # at least 1 connection point has to be received
+            if not vlan_processed:
+                raise SdnConnectorError(message=SdnError.UNSUPPORTED_FEATURE,
+                                        http_code=406)
+
+            for s in self.s_api:
+                # for cl in cp_configLets:
+                cl_name = (self.__OSM_PREFIX +
+                           s +
+                           self.__SEPARATOR + service_type + str(vlan_id) +
+                           self.__SEPARATOR + service_uuid)
+                # apply VLAN and BGP configLet to all Leaf switches
+                if service_type == self.__service_types_ELAN:
+                    cl_bgp[s] = self.clC.getElan_bgp(service_uuid,
+                                                     vlan_id,
+                                                     vni_id,
+                                                     self.sw_loopback0[s],
+                                                     self.bgp[s])
+                else:
+                    cl_bgp[s] = self.clC.getEline_bgp(service_uuid,
+                                                      vlan_id,
+                                                      vni_id,
+                                                      self.sw_loopback0[s],
+                                                      self.bgp[s])
+
+                if not cls_cp.get(s):
+                    cl_config = ''
+                else:
+                    cl_config = str(cl_vlan) + str(cl_bgp[s]) + str(cls_cp[s])
+
+                cls_perSw[s] = [{'name': cl_name, 'config': cl_config}]
+
+            allLeafConfigured, allLeafModified = self.__updateConnection(cls_perSw)
+
+            conn_info = {
+                "uuid": service_uuid,
+                "status": "BUILD",
+                "service_type": service_type,
+                "vlan_id": vlan_id,
+                "connection_points": connection_points,
+                "configLetPerSwitch": cls_perSw,
+                'allLeafConfigured': allLeafConfigured,
+                'allLeafModified': allLeafModified}
+
+            return service_uuid, conn_info
+        except Exception as ex:
+            self.logger.debug("Exception processing connection {}: {}".
+                              format(service_uuid, str(ex)))
+            raise ex
+
+    def __updateConnection(self, cls_perSw):
+        """ Invoked in the creation and modification
+
+        checks if the new connection points config is:
+            - already in the Cloud Vision, the configLet is modified, and applied to the switch,
+                executing the corresponding task
+            - if it has to be removed:
+                then configuration has to be removed from the switch executing the corresponding task,
+                before trying to remove the configuration
+            - created, the configuration set is created, associated to the switch, and the associated
+                task to the configLet modification executed
+        In case of any error, rollback is executed, removing the created elements, and restoring to the
+        previous state.
+        """
+        try:
+            allLeafConfigured = {}
+            allLeafModified = {}
+
+            for s in self.s_api:
+                allLeafConfigured[s] = False
+                allLeafModified[s] = False
+            tasks = dict()
+            cl_toDelete = []
+            for s in self.s_api:
+                toDelete_in_cvp = False
+                if not (cls_perSw.get(s) and cls_perSw[s][0].get('config')):
+                    # when there is no configuration, means that there is no interface
+                    # in the switch to be connected, so the configLet has to be removed from CloudVision
+                    # after removing the ConfigLet fron the switch if it was already there
+
+                    # get config let name and key
+                    cl = cls_perSw[s]
+                    try:
+                        cvp_cl = self.client.api.get_configlet_by_name(cl[0]['name'])
+                        # remove configLet
+                        cl_toDelete.append(cvp_cl)
+                        cl[0] = cvp_cl
+                        toDelete_in_cvp = True
+                    except CvpApiError as error:
+                        if "Entity does not exist" in error.msg:
+                            continue
+                        else:
+                            raise error
+                    # remove configLet from device
+                else:
+                    res = self.__configlet_modify(cls_perSw[s])
+                    allLeafConfigured[s] = res[0]
+                    if not allLeafConfigured[s]:
+                        continue
+                    cl = cls_perSw[s]
+                res = self.__device_modify(
+                                           device_to_update=s,
+                                           new_configlets=cl,
+                                           delete=toDelete_in_cvp)
+                if "errorMessage" in str(res):
+                    raise Exception(str(res))
+                self.logger.info("Device {} modify result {}".format(s, res))
+                for t_id in res[1]['tasks']:
+                    tasks[t_id] = {'workOrderId': t_id}
+                    if not toDelete_in_cvp:
+                        note_msg = "## Managed by OSM {}{}{}##".format(self.__SEPARATOR,
+                                                                       t_id,
+                                                                       self.__SEPARATOR)
+                        self.client.api.add_note_to_configlet(
+                                cls_perSw[s][0]['key'],
+                                note_msg)
+                        cls_perSw[s][0].update([('note', note_msg)])
+                # with just one configLet assigned to a device,
+                # delete all if there are errors in next loops
+                if not toDelete_in_cvp:
+                    allLeafModified[s] = True
+            if self.taskC is None:
+                self.__connect()
+            data = self.taskC.update_all_tasks(tasks).values()
+            self.taskC.task_action(data,
+                                   self.__EXC_TASK_EXEC_WAIT,
+                                   'executed')
+            if len(cl_toDelete) > 0:
+                self.__configlet_modify(cl_toDelete, delete=True)
+            return allLeafConfigured, allLeafModified
+        except Exception as ex:
+            try:
+                self.__rollbackConnection(cls_perSw,
+                                          allLeafConfigured=True,
+                                          allLeafModified=True)
+            except Exception as e:
+                self.logger.info("Exception rolling back in updating  connection: {}".
+                                 format(e))
+            raise ex
+
+    def __rollbackConnection(self,
+                             cls_perSw,
+                             allLeafConfigured,
+                             allLeafModified):
+        """ Removes the given configLet from the devices and then remove the configLets
+        """
+        tasks = dict()
+        for s in self.s_api:
+            if allLeafModified[s]:
+                try:
+                    res = self.__device_modify(
+                        device_to_update=s,
+                        new_configlets=cls_perSw[s],
+                        delete=True)
+                    if "errorMessage" in str(res):
+                        raise Exception(str(res))
+                    for t_id in res[1]['tasks']:
+                        tasks[t_id] = {'workOrderId': t_id}
+                    self.logger.info("Device {} modify result {}".format(s, res))
+                except Exception as e:
+                    self.logger.info('Error removing configlets from device {}: {}'.format(s, e))
+                    pass
+        if self.taskC is None:
+            self.__connect()
+        data = self.taskC.update_all_tasks(tasks).values()
+        self.taskC.task_action(data,
+                               self.__ROLLB_TASK_EXEC_WAIT,
+                               'executed')
+        for s in self.s_api:
+            if allLeafConfigured[s]:
+                self.__configlet_modify(cls_perSw[s], delete=True)
+
+    def __device_modify(self, device_to_update, new_configlets, delete):
+        """ Updates the devices (switches) adding or removing the configLet,
+        the tasks Id's associated to the change are returned
+        """
+        self.logger.info('Enter in __device_modify delete: {}'.format(
+                            delete))
+        updated = []
+        changed = False
+        # Task Ids that have been identified during device actions
+        newTasks = []
+
+        if (len(new_configlets) == 0 or
+                device_to_update is None or
+                len(device_to_update) == 0):
+            data = {'updated': updated, 'tasks': newTasks}
+            return [changed, data]
+
+        self.__load_inventory()
+
+        allDeviceFacts = self.allDeviceFacts
+        # Work through Devices list adding device specific information
+        device = None
+        for try_device in allDeviceFacts:
+            # Add Device Specific Configlets
+            # self.logger.debug(device)
+            if try_device['hostname'] not in device_to_update:
+                continue
+            dev_cvp_configlets = self.client.api.get_configlets_by_device_id(
+                                    try_device['systemMacAddress'])
+            # self.logger.debug(dev_cvp_configlets)
+            try_device['deviceSpecificConfiglets'] = []
+            for cvp_configlet in dev_cvp_configlets:
+                if int(cvp_configlet['containerCount']) == 0:
+                    try_device['deviceSpecificConfiglets'].append(
+                                {'name': cvp_configlet['name'],
+                                 'key': cvp_configlet['key']})
+            # self.logger.debug(device)
+            device = try_device
+            break
+
+        # Check assigned configlets
+        device_update = False
+        add_configlets = []
+        remove_configlets = []
+        update_devices = []
+
+        if delete:
+            for cvp_configlet in device['deviceSpecificConfiglets']:
+                for cl in new_configlets:
+                    if cvp_configlet['name'] == cl['name']:
+                        remove_configlets.append(cvp_configlet)
+                        device_update = True
+        else:
+            for configlet in new_configlets:
+                if configlet not in device['deviceSpecificConfiglets']:
+                    add_configlets.append(configlet)
+                    device_update = True
+        if device_update:
+            update_devices.append({'hostname': device['hostname'],
+                                   'configlets': [add_configlets,
+                                                  remove_configlets],
+                                   'device': device})
+        self.logger.info("Device to modify: {}".format(update_devices))
+
+        up_device = update_devices[0]
+        cl_toAdd = up_device['configlets'][0]
+        cl_toDel = up_device['configlets'][1]
+        # Update Configlets
+        try:
+            if delete and len(cl_toDel) > 0:
+                r = self.client.api.remove_configlets_from_device(
+                                                    'OSM',
+                                                    up_device['device'],
+                                                    cl_toDel,
+                                                    create_task=True)
+                dev_action = r
+                self.logger.debug("remove_configlets_from_device {} {}".format(dev_action, cl_toDel))
+            elif len(cl_toAdd) > 0:
+                r = self.client.api.apply_configlets_to_device(
+                                                    'OSM',
+                                                    up_device['device'],
+                                                    cl_toAdd,
+                                                    create_task=True)
+                dev_action = r
+                self.logger.debug("apply_configlets_to_device {} {}".format(dev_action, cl_toAdd))
+
+        except Exception as error:
+            errorMessage = str(error)
+            msg = "errorMessage: Device {} Configlets couldnot be updated: {}".format(
+                  up_device['hostname'], errorMessage)
+            raise SdnConnectorError(msg) from error
+        else:
+            if "errorMessage" in str(dev_action):
+                m = "Device {} Configlets update fail: {}".format(
+                            up_device['name'], dev_action['errorMessage'])
+                raise SdnConnectorError(m)
+            else:
+                changed = True
+                if 'taskIds' in str(dev_action):
+                    for taskId in dev_action['data']['taskIds']:
+                        updated.append({up_device['hostname']:
+                                        "Configlets-{}".format(
+                                            taskId)})
+                        newTasks.append(taskId)
+                else:
+                    updated.append({up_device['hostname']:
+                                   "Configlets-No_Specific_Tasks"})
+        data = {'updated': updated, 'tasks': newTasks}
+        return [changed, data]
+
+    def __configlet_modify(self, configletsToApply, delete=False):
+        ''' adds/update or delete the provided configLets
+        :param configletsToApply: list of configLets to apply
+        :param delete: flag to indicate if the configLets have to be deleted
+                        from Cloud Vision Portal
+        :return: data: dict of module actions and taskIDs
+        '''
+        self.logger.info('Enter in __configlet_modify delete:{}'.format(
+                            delete))
+
+        # Compare configlets against cvp_facts-configlets
+        changed = False
+        checked = []
+        deleted = []
+        updated = []
+        new = []
+
+        for cl in configletsToApply:
+            found_in_cvp = False
+            to_delete = False
+            to_update = False
+            to_create = False
+            to_check = False
+            try:
+                cvp_cl = self.client.api.get_configlet_by_name(cl['name'])
+                cl['key'] = cvp_cl['key']
+                cl['note'] = cvp_cl['note']
+                found_in_cvp = True
+            except CvpApiError as error:
+                if "Entity does not exist" in error.msg:
+                    pass
+                else:
+                    raise error
+
+            if delete:
+                if found_in_cvp:
+                    to_delete = True
+                    configlet = {'name': cvp_cl['name'],
+                                 'data': cvp_cl}
+            else:
+                if found_in_cvp:
+                    cl_compare = self.__compare(cl['config'],
+                                                cvp_cl['config'])
+                    # compare function returns a floating point number
+                    if cl_compare[0] != 100.0:
+                        to_update = True
+                        configlet = {'name': cl['name'],
+                                     'data': cvp_cl,
+                                     'config': cl['config']}
+                    else:
+                        to_check = True
+                        configlet = {'name': cl['name'],
+                                     'key': cvp_cl['key'],
+                                     'data': cvp_cl,
+                                     'config': cl['config']}
+                else:
+                    to_create = True
+                    configlet = {'name': cl['name'],
+                                 'config': cl['config']}
+            try:
+                if to_delete:
+                    operation = 'delete'
+                    resp = self.client.api.delete_configlet(
+                                    configlet['data']['name'],
+                                    configlet['data']['key'])
+                elif to_update:
+                    operation = 'update'
+                    resp = self.client.api.update_configlet(
+                                    configlet['config'],
+                                    configlet['data']['key'],
+                                    configlet['data']['name'])
+                elif to_create:
+                    operation = 'create'
+                    resp = self.client.api.add_configlet(
+                                    configlet['name'],
+                                    configlet['config'])
+                else:
+                    operation = 'checked'
+                    resp = 'checked'
+            except Exception as error:
+                errorMessage = str(error).split(':')[-1]
+                message = "Configlet {} cannot be {}: {}".format(
+                            cl['name'], operation, errorMessage)
+                if to_delete:
+                    deleted.append({configlet['name']: message})
+                elif to_update:
+                    updated.append({configlet['name']: message})
+                elif to_create:
+                    new.append({configlet['name']: message})
+                elif to_check:
+                    checked.append({configlet['name']: message})
+
+            else:
+                if "error" in str(resp).lower():
+                    message = "Configlet {} cannot be deleted: {}".format(
+                            cl['name'], resp['errorMessage'])
+                    if to_delete:
+                        deleted.append({configlet['name']: message})
+                    elif to_update:
+                        updated.append({configlet['name']: message})
+                    elif to_create:
+                        new.append({configlet['name']: message})
+                    elif to_check:
+                        checked.append({configlet['name']: message})
+                else:
+                    if to_delete:
+                        changed = True
+                        deleted.append({configlet['name']: "success"})
+                    elif to_update:
+                        changed = True
+                        updated.append({configlet['name']: "success"})
+                    elif to_create:
+                        changed = True
+                        cl['key'] = resp  # This key is used in API call deviceApplyConfigLet FGA
+                        new.append({configlet['name']: "success"})
+                    elif to_check:
+                        changed = False
+                        checked.append({configlet['name']: "success"})
+
+        data = {'new': new, 'updated': updated, 'deleted': deleted, 'checked': checked}
+        return [changed, data]
+
+    def __get_configletsDevices(self, configlets):
+        for s in self.s_api:
+            configlet = configlets[s]
+            # Add applied Devices
+            if len(configlet) > 0:
+                configlet['devices'] = []
+                applied_devices = self.client.api.get_applied_devices(
+                                configlet['name'])
+                for device in applied_devices['data']:
+                    configlet['devices'].append(device['hostName'])
+
+    def __get_serviceData(self, service_uuid, service_type, vlan_id, conn_info=None):
+        cls_perSw = {}
+        for s in self.s_api:
+            cls_perSw[s] = []
+        if not conn_info:
+            srv_cls = self.__get_serviceConfigLets(service_uuid,
+                                                   service_type,
+                                                   vlan_id)
+            self.__get_configletsDevices(srv_cls)
+            for s in self.s_api:
+                cl = srv_cls[s]
+                if len(cl) > 0:
+                    for dev in cl['devices']:
+                        cls_perSw[dev].append(cl)
+        else:
+            cls_perSw = conn_info['configLetPerSwitch']
+        return cls_perSw
+
+    def delete_connectivity_service(self, service_uuid, conn_info=None):
+        """
+        Disconnect multi-site endpoints previously connected
+
+        :param service_uuid: The one returned by create_connectivity_service
+        :param conn_info: The one returned by last call to 'create_connectivity_service' or 'edit_connectivity_service'
+            if they do not return None
+        :return: None
+        :raises: SdnConnectorException: In case of error. The parameter http_code must be filled
+        """
+        try:
+            self.logger.debug('invoked delete_connectivity_service {}'.
+                              format(service_uuid))
+            if not service_uuid:
+                raise SdnConnectorError(message='No connection service UUID',
+                                        http_code=500)
+
+            self.__get_Connection()
+            if conn_info is None:
+                raise SdnConnectorError(message='No connection information for service UUID {}'.format(service_uuid),
+                                        http_code=500)
+            c_info = None
+            cls_perSw = self.__get_serviceData(service_uuid,
+                                               conn_info['service_type'],
+                                               conn_info['vlan_id'],
+                                               c_info)
+            allLeafConfigured = {}
+            allLeafModified = {}
+            for s in self.s_api:
+                allLeafConfigured[s] = True
+                allLeafModified[s] = True
+            found_in_cvp = False
+            for s in self.s_api:
+                if cls_perSw[s]:
+                    found_in_cvp = True
+            if found_in_cvp:
+                self.__rollbackConnection(cls_perSw,
+                                          allLeafConfigured,
+                                          allLeafModified)
+            else:
+                # if the service is not defined in Cloud Vision, return a 404 - NotFound error
+                raise SdnConnectorError(message='Service {} was not found in Arista Cloud Vision {}'.
+                                        format(service_uuid, self.__wim_url),
+                                        http_code=404)
+            self.__removeMetadata(service_uuid)
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except SdnConnectorError as sde:
+            raise sde
+        except Exception as ex:
+            self.client = None
+            self.logger.error(ex)
+            if self.raiseException:
+                raise ex
+            raise SdnConnectorError(message=SdnError.INTERNAL_ERROR,
+                                    http_code=500) from ex
+
+    def __addMetadata(self, service_uuid, service_type, vlan_id):
+        """ Adds the connectivity service from 'OSM_metadata' configLet
+        """
+        found_in_cvp = False
+        try:
+            cvp_cl = self.client.api.get_configlet_by_name(self.__OSM_METADATA)
+            found_in_cvp = True
+        except CvpApiError as error:
+            if "Entity does not exist" in error.msg:
+                pass
+            else:
+                raise error
+        try:
+            new_serv = '{} {} {} {}\n'.format(self.__METADATA_PREFIX, service_type, vlan_id, service_uuid)
+
+            if found_in_cvp:
+                cl_config = cvp_cl['config'] + new_serv
+            else:
+                cl_config = new_serv
+            cl_meta = [{'name': self.__OSM_METADATA, 'config': cl_config}]
+            self.__configlet_modify(cl_meta)
+        except Exception as e:
+            self.logger.error('Error in setting metadata in CloudVision from OSM for service {}: {}'.
+                              format(service_uuid, str(e)))
+            pass
+
+    def __removeMetadata(self, service_uuid):
+        """ Removes the connectivity service from 'OSM_metadata' configLet
+        """
+        found_in_cvp = False
+        try:
+            cvp_cl = self.client.api.get_configlet_by_name(self.__OSM_METADATA)
+            found_in_cvp = True
+        except CvpApiError as error:
+            if "Entity does not exist" in error.msg:
+                pass
+            else:
+                raise error
+        try:
+            if found_in_cvp:
+                if service_uuid in cvp_cl['config']:
+                    cl_config = ''
+                    for line in cvp_cl['config'].split('\n'):
+                        if service_uuid in line:
+                            continue
+                        else:
+                            cl_config = cl_config + line
+                    cl_meta = [{'name': self.__OSM_METADATA, 'config': cl_config}]
+                    self.__configlet_modify(cl_meta)
+        except Exception as e:
+            self.logger.error('Error in removing metadata in CloudVision from OSM for service {}: {}'.
+                              format(service_uuid, str(e)))
+            pass
+
+    def edit_connectivity_service(self,
+                                  service_uuid,
+                                  conn_info=None,
+                                  connection_points=None,
+                                  **kwargs):
+        """ Change an existing connectivity service.
+
+        This method's arguments and return value follow the same convention as
+        :meth:`~.create_connectivity_service`.
+
+        :param service_uuid: UUID of the connectivity service.
+        :param conn_info: (dict or None): Information previously returned
+            by last call to create_connectivity_service
+            or edit_connectivity_service
+        :param connection_points: (list): If provided, the old list of
+            connection points will be replaced.
+        :param kwargs: Same meaning that create_connectivity_service
+        :return: dict or None: Information to be updated and stored at
+                the database.
+                When ``None`` is returned, no information should be changed.
+                When an empty dict is returned, the database record will
+                be deleted.
+                **MUST** be JSON/YAML-serializable (plain data structures).
+        Raises:
+            SdnConnectorError: In case of error.
+        """
+        try:
+            self.logger.debug('invoked edit_connectivity_service for service {}'.format(service_uuid))
+
+            if not service_uuid:
+                raise SdnConnectorError(message='Unable to perform operation, missing or empty uuid',
+                                        http_code=500)
+            if not conn_info:
+                raise SdnConnectorError(message='Unable to perform operation, missing or empty connection information',
+                                        http_code=500)
+
+            if connection_points is None:
+                return None
+
+            self.__get_Connection()
+
+            cls_currentPerSw = conn_info['configLetPerSwitch']
+            service_type = conn_info['service_type']
+
+            self.__check_service(service_type,
+                                 connection_points,
+                                 check_vlan=False,
+                                 check_num_cp=False,
+                                 kwargs=kwargs)
+
+            s_uid, s_connInf = self.__processConnection(
+                                                        service_uuid,
+                                                        service_type,
+                                                        connection_points,
+                                                        kwargs)
+            self.logger.info("Service with uuid {} configuration updated".
+                             format(s_uid))
+            return s_connInf
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except SdnConnectorError as sde:
+            raise sde
+        except Exception as ex:
+            try:
+                # Add previous
+                # TODO check if there are pending task, and cancel them before restoring
+                self.__updateConnection(cls_currentPerSw)
+            except Exception as e:
+                self.logger.error("Unable to restore configuration in service {} after an error in the configuration updated: {}".
+                                  format(service_uuid, str(e)))
+            if self.raiseException:
+                raise ex
+            raise SdnConnectorError(message=str(ex),
+                                    http_code=500) from ex
+
+    def clear_all_connectivity_services(self):
+        """ Removes all connectivity services from Arista CloudVision with two steps:
+        - retrives all the services from Arista CloudVision
+        - removes each service
+        """
+        try:
+            self.logger.debug('invoked AristaImpl ' +
+                              'clear_all_connectivity_services')
+            self.__get_Connection()
+            s_list = self.__get_srvUUIDs()
+            for serv in s_list:
+                conn_info = {}
+                conn_info['service_type'] = serv['type']
+                conn_info['vlan_id'] = serv['vlan']
+
+                self.delete_connectivity_service(serv['uuid'], conn_info)
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except SdnConnectorError as sde:
+            raise sde
+        except Exception as ex:
+            self.client = None
+            self.logger.error(ex)
+            if self.raiseException:
+                raise ex
+            raise SdnConnectorError(message=SdnError.INTERNAL_ERROR,
+                                    http_code=500) from ex
+
+    def get_all_active_connectivity_services(self):
+        """ Return the uuid of all the active connectivity services with two steps:
+        - retrives all the services from Arista CloudVision
+        - retrives the status of each server
+        """
+        try:
+            self.logger.debug('invoked AristaImpl {}'.format(
+                              'get_all_active_connectivity_services'))
+            self.__get_Connection()
+            s_list = self.__get_srvUUIDs()
+            result = []
+            for serv in s_list:
+                conn_info = {}
+                conn_info['service_type'] = serv['type']
+                conn_info['vlan_id'] = serv['vlan']
+
+                status = self.get_connectivity_service_status(serv['uuid'], conn_info)
+                if status['sdn_status'] == 'ACTIVE':
+                    result.append(serv['uuid'])
+            return result
+        except CvpLoginError as e:
+            self.logger.info(str(e))
+            self.client = None
+            raise SdnConnectorError(message=SdnError.UNAUTHORIZED,
+                                    http_code=401) from e
+        except SdnConnectorError as sde:
+            raise sde
+        except Exception as ex:
+            self.client = None
+            self.logger.error(ex)
+            if self.raiseException:
+                raise ex
+            raise SdnConnectorError(message=SdnError.INTERNAL_ERROR,
+                                    http_code=500) from ex
+
+    def __get_serviceConfigLets(self, service_uuid, service_type, vlan_id):
+        """ Return the configLet's associated with a connectivity service,
+        There should be one, as maximum, per device (switch) for a given
+        connectivity service
+        """
+        srv_cls = {}
+        for s in self.s_api:
+            srv_cls[s] = []
+            found_in_cvp = False
+            name = (self.__OSM_PREFIX +
+                    s +
+                    self.__SEPARATOR + service_type + str(vlan_id) +
+                    self.__SEPARATOR + service_uuid)
+            try:
+                cvp_cl = self.client.api.get_configlet_by_name(name)
+                found_in_cvp = True
+            except CvpApiError as error:
+                if "Entity does not exist" in error.msg:
+                    pass
+                else:
+                    raise error
+            if found_in_cvp:
+                srv_cls[s] = cvp_cl
+        return srv_cls
+
+    def __get_srvVLANs(self):
+        """ Returns a list with all the VLAN id's used in the connectivity services managed
+        in tha Arista CloudVision by checking the 'OSM_metadata' configLet where this
+        information is stored
+        """
+        found_in_cvp = False
+        try:
+            cvp_cl = self.client.api.get_configlet_by_name(self.__OSM_METADATA)
+            found_in_cvp = True
+        except CvpApiError as error:
+            if "Entity does not exist" in error.msg:
+                pass
+            else:
+                raise error
+        s_vlan_list = []
+        if found_in_cvp:
+            lines = cvp_cl['config'].split('\n')
+            for line in lines:
+                if self.__METADATA_PREFIX in line:
+                    s_vlan = line.split(' ')[3]
+                else:
+                    continue
+                if (s_vlan is not None and
+                        len(s_vlan) > 0 and
+                        s_vlan not in s_vlan_list):
+                    s_vlan_list.append(s_vlan)
+
+        return s_vlan_list
+
+    def __get_srvUUIDs(self):
+        """ Retrieves all the connectivity services, managed in tha Arista CloudVision
+        by checking the 'OSM_metadata' configLet where this information is stored
+        """
+        found_in_cvp = False
+        try:
+            cvp_cl = self.client.api.get_configlet_by_name(self.__OSM_METADATA)
+            found_in_cvp = True
+        except CvpApiError as error:
+            if "Entity does not exist" in error.msg:
+                pass
+            else:
+                raise error
+        serv_list = []
+        if found_in_cvp:
+            lines = cvp_cl['config'].split('\n')
+            for line in lines:
+                if self.__METADATA_PREFIX in line:
+                    line = line.split(' ')
+                    serv = {'uuid': line[4], 'type': line[2], 'vlan': line[3]}
+                else:
+                    continue
+                if (serv is not None and
+                        len(serv) > 0 and
+                        serv not in serv_list):
+                    serv_list.append(serv)
+
+        return serv_list
+
+    def __get_Connection(self):
+        """ Open a connection with Arista CloudVision,
+            invoking the version retrival as test
+        """
+        try:
+            if self.client is None:
+                self.client = self.__connect()
+            self.client.api.get_cvp_info()
+        except CvpSessionLogOutError:
+            self.client = self.__connect()
+            self.client.api.get_cvp_info()
+
+    def __connect(self):
+        ''' Connects to CVP device using user provided credentials from initialization.
+        :return: CvpClient object with connection instantiated.
+        '''
+        client = CvpClient()
+        protocol, _, rest_url = self.__wim_url.rpartition("://")
+        host, _, port = rest_url.partition(":")
+        if port and port.endswith("/"):
+            port = int(port[:-1])
+        elif port:
+            port = int(port)
+        else:
+            port = 443
+
+        client.connect([host],        
+                       self.__user,
+                       self.__passwd,
+                       protocol=protocol or "https",
+                       port=port,
+                       connect_timeout=2)
+        self.taskC = AristaCVPTask(client.api)
+        return client
+
+    def __compare(self, fromText, toText, lines=10):
+        """ Compare text string in 'fromText' with 'toText' and produce
+        diffRatio - a score as a float in the range [0, 1] 2.0*M / T
+          T is the total number of elements in both sequences,
+          M is the number of matches.
+          Score - 1.0 if the sequences are identical, and
+                  0.0 if they have nothing in common.
+        unified diff list
+          Code Meaning
+          '- ' line unique to sequence 1
+          '+ ' line unique to sequence 2
+          '  ' line common to both sequences
+          '? ' line not present in either input sequence
+        """
+        fromlines = fromText.splitlines(1)
+        tolines = toText.splitlines(1)
+        diff = list(difflib.unified_diff(fromlines, tolines, n=lines))
+        textComp = difflib.SequenceMatcher(None, fromText, toText)
+        diffRatio = round(textComp.quick_ratio()*100, 2)
+        return [diffRatio, diff]
+
+    def __load_inventory(self):
+        """ Get Inventory Data for All Devices (aka switches) from the Arista CloudVision
+        """
+        if not self.cvp_inventory:
+            self.cvp_inventory = self.client.api.get_inventory()
+        self.allDeviceFacts = []
+        for device in self.cvp_inventory:
+            self.allDeviceFacts.append(device)
+
+    def is_valid_destination(self, url):
+        """ Check that the provided WIM URL is correct
+        """
+        if re.match(self.__regex, url):
+            return True
+        elif self.is_valid_ipv4_address(url):
+            return True
+        else:
+            return self.is_valid_ipv6_address(url)
+
+    def is_valid_ipv4_address(self, address):
+        """ Checks that the given IP is IPv4 valid
+        """
+        try:
+            socket.inet_pton(socket.AF_INET, address)
+        except AttributeError:  # no inet_pton here, sorry
+            try:
+                socket.inet_aton(address)
+            except socket.error:
+                return False
+            return address.count('.') == 3
+        except socket.error:  # not a valid address
+            return False
+        return True
+
+    def is_valid_ipv6_address(self, address):
+        """ Checks that the given IP is IPv6 valid
+        """
+        try:
+            socket.inet_pton(socket.AF_INET6, address)
+        except socket.error:  # not a valid address
+            return False
+        return True
diff --git a/RO-SDN-arista/requirements.txt b/RO-SDN-arista/requirements.txt
new file mode 100644 (file)
index 0000000..e0aac53
--- /dev/null
@@ -0,0 +1,21 @@
+##
+# 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.
+##
+
+requests
+jsonrpclib-pelix
+uuid
+cvprac
+git+https://osm.etsi.org/gerrit/osm/RO.git#egg=osm-ro
+
diff --git a/RO-SDN-arista/setup.py b/RO-SDN-arista/setup.py
new file mode 100644 (file)
index 0000000..4532078
--- /dev/null
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+##
+# 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.
+##
+
+from setuptools import setup
+
+_name = "osm_rosdn_arista"
+
+README = """
+===========
+osm-rosdn_arista
+===========
+
+osm-ro pluging for arista SDN
+"""
+
+setup(
+    name=_name,
+    description='OSM ro sdn plugin for arista',
+    long_description=README,
+    version_command=('git describe --match v* --tags --long --dirty', 'pep440-git-full'),
+    # version=VERSION,
+    # python_requires='>3.5.0',
+    author='ETSI OSM',
+    # TODO py3 author_email='',
+    maintainer='oscarluis.peral@atos.net',  # TODO py3
+    # TODO py3 maintainer_email='',
+    url='https://osm.etsi.org/gitweb/?p=osm/RO.git;a=summary',
+    license='Apache 2.0',
+
+    packages=[_name],
+    include_package_data=True,
+    install_requires=["requests",
+                      "uuid",
+                      "jsonrpclib-pelix",
+                      "cvprac",
+                      "osm-ro @ git+https://osm.etsi.org/gerrit/osm/RO.git#egg=osm-ro&subdirectory=RO"],
+    setup_requires=['setuptools-version-command'],
+    entry_points={
+        'osm_rosdn.plugins': ['rosdn_arista = osm_rosdn_arista.wimconn_arista:AristaSdnConnector']
+    },
+)
diff --git a/RO-SDN-arista/stdeb.cfg b/RO-SDN-arista/stdeb.cfg
new file mode 100644 (file)
index 0000000..71b1615
--- /dev/null
@@ -0,0 +1,19 @@
+#
+# 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.
+#
+
+[DEFAULT]
+X-Python3-Version : >= 3.5
+Depends3: python3-requests, python3-osm-ro, python3-jsonrpclib-pelix, python3-cvprac
+
diff --git a/RO-SDN-arista/tox.ini b/RO-SDN-arista/tox.ini
new file mode 100644 (file)
index 0000000..d737d6e
--- /dev/null
@@ -0,0 +1,41 @@
+##
+# 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.
+##
+
+[tox]
+envlist = py3
+toxworkdir={homedir}/.tox
+
+[testenv]
+basepython = python3
+install_command = python3 -m pip install -r requirements.txt -U {opts} {packages}
+# deps = -r{toxinidir}/test-requirements.txt
+commands=python3 -m unittest discover -v
+
+[testenv:flake8]
+basepython = python3
+deps = flake8
+commands = flake8 osm_rosdn_arista --max-line-length 120 \
+    --exclude .svn,CVS,.gz,.git,__pycache__,.tox,local,temp --ignore W291,W293,E226,W504
+
+[testenv:unittest]
+basepython = python3
+commands = python3 -m unittest osm_rosdn_arista.tests
+
+[testenv:build]
+basepython = python3
+deps = stdeb
+       setuptools-version-command
+commands = python3 setup.py --command-packages=stdeb.command bdist_deb
+