Add Honeycomb persistence tests 63/1263/9
authorselias <samelias@cisco.com>
Wed, 25 May 2016 15:16:11 +0000 (17:16 +0200)
committerJan Gelety <jgelety@cisco.com>
Tue, 7 Jun 2016 20:19:50 +0000 (20:19 +0000)
JIRA: CSIT-121

 - add honeycomb persistence test suite
 - add keywords used by persistence tests
 - add methods for working with Honeycomb persistence files
 - make suite setup clear persisted data before Honeycomb startup

Change-Id: Ief61c12b730d58a456566c4683c0091e08a09b56
Signed-off-by: selias <samelias@cisco.com>
resources/libraries/python/constants.py
resources/libraries/python/honeycomb/HcAPIKwInterfaces.py
resources/libraries/python/honeycomb/HcPersistence.py [new file with mode: 0644]
resources/libraries/python/honeycomb/HoneycombSetup.py
resources/libraries/robot/honeycomb/honeycomb.robot
resources/libraries/robot/honeycomb/persistence.robot [new file with mode: 0644]
tests/suites/honeycomb/7 - persistence.robot [new file with mode: 0644]
tests/suites/honeycomb/__init__.robot
tests/suites/honeycomb/resources/persistence.py [new file with mode: 0644]

index b3a61da..a119bdb 100644 (file)
@@ -26,7 +26,7 @@ class Constants(object):
     VAT_BIN_NAME = 'vpp_api_test'
 
     # Honeycomb directory location at topology nodes:
-    REMOTE_HC_DIR = '/opt/honeycomb/v3po-karaf-1.0.0-SNAPSHOT/bin'
+    REMOTE_HC_DIR = '/opt/honeycomb/v3po-karaf-1.0.0-SNAPSHOT'
 
     # Honeycomb templates location
     RESOURCES_TPL_HC = 'resources/templates/honeycomb'
index c143b06..e8cbc78 100644 (file)
@@ -1047,3 +1047,29 @@ class InterfaceKeywords(object):
                 "vlan-tag-rewrite")
         return InterfaceKeywords._set_interface_properties(
             node, sub_interface, path, None)
+
+    @staticmethod
+    def compare_interface_lists(list1, list2):
+        """Compare provided lists of interfaces by name.
+
+        :param list1: List of interfaces.
+        :param list2: List of interfaces.
+        :type list1: list
+        :type list2: list
+        :raises HoneycombError: If an interface exists in only one of the lists.
+        """
+
+        ignore = ["vx_tunnel0", "vxlan_gpe_tunnel0"]
+        # these have no equivalent in config data and no effect on VPP
+
+        names1 = [x['name'] for x in list1]
+        names2 = [x['name'] for x in list2]
+
+        for name in names1:
+            if name not in names2 and name not in ignore:
+                raise HoneycombError("Interface {0} not present in list {1}"
+                                     .format(name, list2))
+        for name in names2:
+            if name not in names1 and name not in ignore:
+                raise HoneycombError("Interface {0} not present in list {1}"
+                                     .format(name, list1))
diff --git a/resources/libraries/python/honeycomb/HcPersistence.py b/resources/libraries/python/honeycomb/HcPersistence.py
new file mode 100644 (file)
index 0000000..adb55f5
--- /dev/null
@@ -0,0 +1,87 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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.
+
+"""Implementation of keywords for managing Honeycomb persistence files."""
+
+from robot.api import logger
+
+from resources.libraries.python.constants import Constants as Const
+from resources.libraries.python.honeycomb.HoneycombUtil import HoneycombError
+from resources.libraries.python.ssh import SSH
+from resources.libraries.python.topology import NodeType
+
+
+class HcPersistence(object):
+    """Implements keywords for managing Honeycomb persistence files.
+
+    The keywords implemented in this class make possible to:
+    - find and replace strings in config.json persistence file
+    """
+
+    def __init__(self):
+        pass
+
+    @staticmethod
+    def clear_persisted_honeycomb_config(*nodes):
+        """Remove configuration data persisted from last Honeycomb session.
+        Default configuration will be used instead.
+
+        :param nodes: List of DUTs to execute on.
+        :type nodes: list
+        :raises HoneycombError: If persisted configuration could not be removed.
+        """
+        cmd = "rm {0}/etc/opendaylight/honeycomb/*".format(
+            Const.REMOTE_HC_DIR)
+        for node in nodes:
+            if node['type'] == NodeType.DUT:
+                ssh = SSH()
+                ssh.connect(node)
+                (ret_code, _, stderr) = ssh.exec_command_sudo(cmd)
+                if ret_code != 0:
+                    if "No such file or directory" not in stderr:
+                        raise HoneycombError('Could not clear persisted '
+                                             'configuration on node {0}, {1}'
+                                             .format(node['host'], stderr))
+                    else:
+                        logger.info("Persistence data was not present on node"
+                                    " {0}".format(node['host']))
+                else:
+                    logger.info("Persistence files removed on node {0}"
+                                .format(node['host']))
+
+    @staticmethod
+    def modify_persistence_files(node, find, replace):
+        """Searches contents of persistence file config.json for the provided
+         string, and replaces all occurrences with another string.
+
+        :param node: Honeycomb node.
+        :param find: Text to find in file.
+        :param replace: String to replace anything found with.
+        :type node: dict
+        :type find: string
+        :type replace: string
+        :raises HoneycombError: If persistent configuration couldn't be
+        modified.
+        """
+
+        argument = "\"s/{0}/{1}/g\"".format(find, replace)
+        path = "{0}/etc/opendaylight/honeycomb/config.json".format(
+            Const.REMOTE_HC_DIR)
+        command = "sed -i {0} {1}".format(argument, path)
+
+        ssh = SSH()
+        ssh.connect(node)
+        (ret_code, _, stderr) = ssh.exec_command_sudo(command)
+        if ret_code != 0:
+            raise HoneycombError("Failed to modify persistence file on node"
+                                 " {0}, {1}".format(node, stderr))
index e9c1295..1c232f0 100644 (file)
@@ -53,9 +53,9 @@ class HoneycombSetup(object):
         :type nodes: list
         :raises HoneycombError: If Honeycomb fails to start.
         """
-        logger.console("Starting Honeycomb service ...")
+        logger.console("\nStarting Honeycomb service ...")
 
-        cmd = "{0}/start".format(Const.REMOTE_HC_DIR)
+        cmd = "{0}/bin/start".format(Const.REMOTE_HC_DIR)
 
         for node in nodes:
             if node['type'] == NodeType.DUT:
@@ -81,9 +81,9 @@ class HoneycombSetup(object):
         :type nodes: list
         :raises HoneycombError: If Honeycomb failed to stop.
         """
-        logger.console("Shutting down Honeycomb service ...")
+        logger.console("\nShutting down Honeycomb service ...")
 
-        cmd = "{0}/stop".format(Const.REMOTE_HC_DIR)
+        cmd = "{0}/bin/stop".format(Const.REMOTE_HC_DIR)
         errors = []
 
         for node in nodes:
index ee8cfbc..c04bd23 100644 (file)
 | | Stop honeycomb on DUTs | @{duts}
 | | Wait until keyword succeeds | 2m | 10s
 | | ... | Check honeycomb shutdown state | @{duts}
+
+| Clear persisted Honeycomb configuration
+| | [Documentation] | *Delete saved configuration.*
+| | ...
+| | ... | *Arguments:*
+| | ... | - duts - one or more nodes to clear persistence on. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Clear persisted Honeycomb configuration \| ${nodes['DUT1']} \|
+| | [Arguments] | @{duts}
+| | Clear persisted Honeycomb config | @{duts}
\ No newline at end of file
diff --git a/resources/libraries/robot/honeycomb/persistence.robot b/resources/libraries/robot/honeycomb/persistence.robot
new file mode 100644 (file)
index 0000000..1c23915
--- /dev/null
@@ -0,0 +1,226 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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.
+
+*** Settings ***
+| Library | resources.libraries.python.honeycomb.HcAPIKwInterfaces.InterfaceKeywords
+| ...     | WITH NAME | InterfaceAPI
+| Library | resources.libraries.python.honeycomb.HcPersistence
+| Resource | resources/libraries/robot/honeycomb/honeycomb.robot
+| Resource | resources/libraries/robot/honeycomb/interfaces.robot
+| Resource | resources/libraries/robot/honeycomb/vxlan.robot
+| Resource | resources/libraries/robot/honeycomb/bridge_domain.robot
+| Resource | resources/libraries/robot/honeycomb/tap.robot
+| Resource | resources/libraries/robot/honeycomb/vhost_user.robot
+| Resource | resources/libraries/robot/honeycomb/sub_interface.robot
+| Variables | tests/suites/honeycomb/resources/persistence.py | ${interface}
+| Documentation | Keywords used to test Honeycomb persistence.
+
+*** Keywords ***
+| Honeycomb is restarted
+| | [Documentation] | Restarts Honeycomb without clearing persistence data.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb is restarted \| ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | Stop Honeycomb service on DUTs | ${node}
+| | Setup Honeycomb service on DUTs | ${node}
+
+| VPP is restarted
+| | [Documentation] | Restarts VPP and waits until it reconnects with Honeycomb.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| VPP is restarted \| ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | Setup DUT | ${node}
+| | Check VPP connection | ${node}
+
+| Check VPP connection
+| | [Documentation] | Checks if Honeycomb is connected to VPP by reading VPP\
+| | ... | version number from Honeycomb operational data.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Check VPP connection \| ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | Wait until keyword succeeds | 2min | 20sec
+| | ... | Check Honeycomb startup state | ${node}
+
+| Honeycomb and VPP are restarted
+| | [Documentation] | Stops Honeycomb, restarts VPP and then starts Honeycomb\
+| | ... | again.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb and VPP are restarted \| ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | Stop Honeycomb service on DUTs | ${node}
+| | Setup DUT | ${node}
+| | Setup Honeycomb service on DUTs | ${node}
+
+| Honeycomb configures every setting
+| | [Documentation] | Uses Honeycomb to set basic settings for VxLAN,\
+| | ... | bridge domains, TAP, vhost-user and VLAN.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb configures every setting \| ${nodes['DUT1']} \
+| | ... | \| GigabitEthernet0/8/0 \|
+| | [Arguments] | ${node} | ${interface}
+| | Honeycomb sets interface VxLAN configuration
+| | ... | ${node} | ${vx_interface} | ${vxlan_settings}
+| | Honeycomb creates first l2 bridge domain
+| | ... | ${node} | ${bd_name} | ${bd_settings}
+| | Honeycomb creates TAP interface
+| | ... | ${node} | ${tap_interface} | ${tap_settings}
+| | Honeycomb creates vhost-user interface
+| | ... | ${node} | ${vhost_interface} | ${vhost_user_server}
+| | Honeycomb creates sub-interface
+| | ... | ${node} | ${interface} | ${sub_interface_id}
+| | ... | ${sub_interface_base_settings} | ${sub_interface_settings}
+| | Honeycomb sets interface state | ${node} | ${interface} | up
+| | VxLAN configuration from Honeycomb should be
+| | ... | ${node} | ${vx_interface} | ${vxlan_settings}
+| | VxLAN configuration from VAT should be
+| | ... | ${node} | ${vxlan_settings}
+| | Bridge domain configuration from Honeycomb should be
+| | ... | ${node} | ${bd_name} | ${bd_settings}
+| | Bridge domain configuration from VAT should be
+| | ... | ${node} | ${0} | ${bd_settings}
+| | TAP configuration from Honeycomb should be
+| | ... | ${node} | ${tap_interface} | ${tap_settings}
+| | TAP configuration from VAT should be
+| | ... | ${node} | ${tap_interface} | ${tap_settings}
+| | Sub-interface configuration from Honeycomb should be
+| | ... | ${node} | ${sub_interface_name} | ${sub_interface_base_settings}
+| | ... | ${sub_interface_settings}
+| | Sub-interface configuration from VAT should be
+| | ... | ${node} | ${sub_interface_name} | ${sub_interface_settings}
+| | Interface state from Honeycomb should be | ${node} | ${interface} | up
+| | Interface state from VAT should be | ${node} | ${interface} | up
+
+| Honeycomb and VPP should verify every setting
+| | [Documentation] | Uses Honeycomb and VAT to verify settings for VxLAN,\
+| | ... | bridge domains, TAP, vhost-user and VLAN.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb and VPP should verify every setting \| ${nodes['DUT1']} \
+| | ... | \| GigabitEthernet0/8/0 \|
+| | [Arguments] | ${node} | ${interface}
+| | VxLAN configuration from Honeycomb should be
+| | ... | ${node} | ${vx_interface} | ${vxlan_settings}
+| | VxLAN configuration from VAT should be
+| | ... | ${node} | ${vxlan_settings}
+| | Bridge domain configuration from Honeycomb should be
+| | ... | ${node} | ${bd_name} | ${bd_settings}
+| | Bridge domain configuration from VAT should be
+| | ... | ${node} | ${0} | ${bd_settings}
+| | TAP configuration from Honeycomb should be
+| | ... | ${node} | ${tap_interface} | ${tap_settings}
+| | TAP configuration from VAT should be
+| | ... | ${node} | ${tap_interface} | ${tap_settings}
+| | Vhost-user configuration from Honeycomb should be
+| | ... | ${node} | ${vhost_interface} | ${vhost_user_server}
+| | Vhost-user configuration from VAT should be
+| | ... | ${node} | ${vhost_user_server}
+| | Sub-interface configuration from Honeycomb should be
+| | ... | ${node} | ${sub_interface_name} | ${sub_interface_base_settings}
+| | ... | ${sub_interface_settings}
+| | Sub-interface configuration from VAT should be
+| | ... | ${node} | ${sub_interface_name} | ${sub_interface_settings}
+| | Interface state from Honeycomb should be | ${node} | ${interface} | up
+| | Interface state from VAT should be | ${node} | ${interface} | up
+
+| Honeycomb and VPP should have default configuration
+| | [Documentation] | Uses Honeycomb and VAT to verify settings for VxLAN,\
+| | ... | bridge domains, TAP, vhost-user and VLAN. Expects default\
+| | ... | configuration.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb and VPP should have default configuration \|
+| | ... | ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | VxLAN configuration from Honeycomb should be empty
+| | ... | ${node} | ${vx_interface}
+| | VxLAN configuration from VAT should be empty | ${node}
+| | Honeycomb should show no bridge domains | ${node}
+| | VAT should show no bridge domains | ${node}
+| | TAP configuration from Honeycomb should be empty
+| | ... | ${node} | ${tap_interface}
+| | TAP configuration from VAT should be empty
+| | ... | ${node} | ${tap_interface}
+| | Vhost-user configuration from Honeycomb should be empty
+| | ... | ${node} | ${vhost_interface}
+| | Vhost-user configuration from VAT should be empty
+| | ... | ${node}
+| | Sub-interface configuration from Honeycomb should be empty
+| | ... | ${node} | ${sub_interface_name}
+| | Sub-interface configuration from VAT should be empty
+| | ... | ${node} | ${sub_interface_name}
+
+| Honeycomb should show no rogue interfaces
+| | [Documentation] | Checks if operational data contains interfaces not\
+| | ... | present in configuration and vice versa.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb should show no rogue interfaces \| ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | ${data_conf}= | InterfaceAPI.Get all interfaces cfg data | ${node}
+| | ${data_oper}= | InterfaceAPI.Get all interfaces oper data | ${node}
+| | Compare interface lists | ${data_conf} | ${data_oper}
+
+| Persistence file is damaged during restart
+| | [Documentation] | Shuts down Honeycomb, modifies persistence files to\
+| | ... | simulate damage, then restarts VPP and starts up Honeycomb again.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Persistence file is damaged during restart \| ${nodes['DUT1']} \|
+| | [Arguments] | ${node}
+| | Stop Honeycomb service on DUTs | ${node}
+| | Modify persistence files | ${node} | { | abc
+| | Setup DUT | ${node}
+| | Setup Honeycomb service on DUTs | ${node}
\ No newline at end of file
diff --git a/tests/suites/honeycomb/7 - persistence.robot b/tests/suites/honeycomb/7 - persistence.robot
new file mode 100644 (file)
index 0000000..24043c3
--- /dev/null
@@ -0,0 +1,64 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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.
+
+*** Variables***
+# Node and interface to run tests on.
+| ${node}= | ${nodes['DUT1']}
+| ${interface}= | ${node['interfaces']['port1']['name']}
+
+*** Settings ***
+| Resource | resources/libraries/robot/default.robot
+| Resource | resources/libraries/robot/honeycomb/persistence.robot
+# Restart Honeycomb and VPP to clear configuration before tests.
+| Suite Setup | Run keywords
+| ... | Stop Honeycomb service on DUTs | ${node} | AND
+| ... | Clear persisted Honeycomb configuration | ${node} | AND
+| ... | Setup DUT | ${node} | AND
+| ... | Setup Honeycomb service on DUTs | ${node}
+| Documentation | *Honeycomb configuration persistence test suite.*
+
+*** Test Cases ***
+| Honeycomb persists configuration through restart of both systems
+| | [Documentation] | Checks if Honeycomb maintains configuration after both\
+| | ... | Honeycomb and VPP are restarted.
+| | [Tags] | honeycomb_sanity
+| | When Honeycomb configures every setting | ${node} | ${interface}
+| | And Honeycomb and VPP are restarted | ${node}
+| | Then Honeycomb and VPP should verify every setting | ${node} | ${interface}
+| | And Honeycomb should show no rogue interfaces | ${node}
+
+| Honeycomb persists configuration through restart of Honeycomb
+| | [Documentation] | Checks if Honeycomb maintains configuration after it\
+| | ... | is restarted.
+| | [Tags] | honeycomb_sanity
+| | Given Honeycomb and VPP should verify every setting | ${node} | ${interface}
+| | When Honeycomb is restarted | ${node}
+| | Then Honeycomb and VPP should verify every setting | ${node} | ${interface}
+| | And Honeycomb should show no rogue interfaces | ${node}
+
+| Honeycomb persists configuration through restart of VPP
+| | [Documentation] | Checks if Honeycomb updates VPP settings after VPP is\
+| | ... | restarted.
+| | [Tags] | honeycomb_sanity
+| | Given Honeycomb and VPP should verify every setting | ${node} | ${interface}
+| | When VPP is restarted | ${node}
+| | Then Honeycomb and VPP should verify every setting | ${node} | ${interface}
+| | And Honeycomb should show no rogue interfaces | ${node}
+
+| Honeycomb reverts to defaults if persistence files are invalid
+| | [Documentation] | Checks if Honeycomb reverts to default configuration when\
+| | ... | persistence files are damaged or invalid.
+| | [Tags] | honeycomb_sanity
+| | Given Honeycomb and VPP should verify every setting | ${node} | ${interface}
+| | When Persistence file is damaged during restart | ${node}
+| | Then Honeycomb and VPP should have default configuration | ${node}
index a61f216..264f604 100644 (file)
 | ${node}= | ${nodes['DUT1']}
 
 *** Settings ***
+| Library | resources.libraries.python.honeycomb.HcPersistence
 | Resource | resources/libraries/robot/default.robot
 | Resource | resources/libraries/robot/honeycomb/honeycomb.robot
 | Suite Setup | Run keywords | Setup all DUTs before test | AND
+| ... | Clear persisted Honeycomb configuration | ${node} | AND
 | ... | Setup Honeycomb service on DUTs | ${node}
 | Suite Teardown | Stop Honeycomb service on DUTs | ${node}
diff --git a/tests/suites/honeycomb/resources/persistence.py b/tests/suites/honeycomb/resources/persistence.py
new file mode 100644 (file)
index 0000000..d47ea66
--- /dev/null
@@ -0,0 +1,74 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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.
+
+"""Test variables for Honeycomb persistence test suite."""
+
+
+def get_variables(interface):
+    """Creates and returns dictionary of test variables.
+
+    :param interface: name of super-interface for the tested sub-interface
+    :type interface: str
+    :return: dictionary of test variables
+    :rtype: dict
+    """
+    # Vlan subinterface basic settings
+    sub_interface_id = 10
+    sub_interface_name = interface + '.' + str(sub_interface_id)
+
+    variables = {
+        # VxLan settings
+        'vx_interface': 'vx_tunnel_test',
+        'vxlan_settings': {'src': '192.168.0.2',
+                           'dst': '192.168.0.3',
+                           "vni": 88,
+                           'encap-vrf-id': 0},
+        # bridge domain settings
+        'bd_name': 'bd_persist',
+        'bd_settings': {'flood': True,
+                        'forward': True,
+                        'learn': True,
+                        'unknown-unicast-flood': True,
+                        'arp-termination': True
+                        },
+        # tap interface settings
+        'tap_interface': 'tap_test',
+        'tap_settings': {'tap-name': 'tap_test',
+                         'mac': '08:00:27:c0:5d:37',
+                         'device-instance': 1
+                         },
+        # vhost-user interface settings
+        'vhost_interface': 'test_vhost',
+        'vhost_user_server': {'socket': 'soc1',
+                              'role': 'server'
+                              },
+        # Vlan subinterface settings
+        'sub_interface_id': sub_interface_id,
+        'sub_interface_name': sub_interface_name,
+        'sub_interface_base_settings': {'name': sub_interface_name,
+                                        'type': 'v3po:sub-interface'
+                                        },
+        'sub_interface_settings': {
+            'super-interface': interface,
+            'identifier': sub_interface_id,
+            'vlan-type': '802dot1ad',
+            'number-of-tags': 2,
+            'outer-id': 22,
+            'inner-id': 33,
+            'match-any-outer-id': False,
+            'match-any-inner-id': False,
+            'exact-match': True,
+            'default-subif': True
+        }
+    }
+    return variables

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