1 files changed, 60 insertions, 0 deletions
diff --git a/tools/pkt_gen/xena/json/xena_json_pairs.py b/tools/pkt_gen/xena/json/xena_json_pairs.py
new file mode 100644
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+++ b/tools/pkt_gen/xena/json/xena_json_pairs.py
@@ -0,0 +1,60 @@
+# Copyright 2017 Red Hat Inc & Xena Networks.
+#
+# 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.
+
+# Contributors:
+#   Dan Amzulescu, Xena Networks
+#   Christian Trautman, Red Hat Inc.
+#
+# Usage can be seen below in unit test. This implementation is designed for one
+# module two port Xena chassis runs only.
+
+"""
+Xena JSON module for pairs topology
+"""
+
+from tools.pkt_gen.xena.json.xena_json import XenaJSON
+
+
+class XenaJSONPairs(XenaJSON):
+    """
+    Class to modify and read Xena JSON configuration files. Topology will be set
+    as Blocks
+    """
+    def __init__(self):
+        super(XenaJSONPairs, self).__init__()
+        self.set_topology_pairs()
+
+    def set_topology_pairs(self):
+        """
+        Set the test topology to loopback pairs for packets that need to return
+        to the same port they are sent from
+        :return: None
+        """
+        self.json_data['TestOptions']['TopologyConfig']['Topology'] = 'PAIRS'
+        self.json_data['TestOptions']['TopologyConfig'][
+            'Direction'] = 'WEST_EAST'
+        self.json_data['PortHandler']['EntityList'][0][
+            'PortGroup'] = "WEST"
+        self.json_data['PortHandler']['EntityList'][1][
+            'PortGroup'] = "WEST"
+
+    def remove_port(self, port_number):
+        """
+        Remove a port from the config.
+        :param port_number: port to remove from json config as int
+        :return: None
+        """
+        del self.json_data['PortHandler']['EntityList'][port_number]
+        del self.json_data['StreamHandler']['StreamConnectionList'][0][
+            'Port{}Id'.format(port_number + 1)]