New version of RF tests.

[csit.git] / resources / libraries / python / TrafficScriptArg.py

diff --git a/resources/libraries/python/TrafficScriptArg.py b/resources/libraries/python/TrafficScriptArg.py
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+# 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.
+
+"""Traffic scripts argument parser library."""
+
+import argparse
+
+
+class TrafficScriptArg(object):
+    """Traffic scripts argument parser.
+
+    Parse arguments for traffic script. Default has two arguments '--tx_if'
+    and '--rx_if'. You can provide more arguments. All arguments have string
+    representation of the value.
+
+    :param more_args: List of aditional arguments (optional).
+    :type more_args: list
+
+    :Example:
+
+    >>> from TrafficScriptArg import TrafficScriptArg
+    >>> args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip'])
+    """
+
+    def __init__(self, more_args=None):
+        parser = argparse.ArgumentParser()
+        parser.add_argument("--tx_if", help="interface that sends traffic")
+        parser.add_argument("--rx_if", help="interface that receives traffic")
+
+        if more_args is not None:
+            for arg in more_args:
+                arg_name = '--{0}'.format(arg)
+                parser.add_argument(arg_name)
+
+        self._parser = parser
+        self._args = vars(parser.parse_args())
+
+    def get_arg(self, arg_name):
+        """Get argument value.
+
+        :param arg_name: Argument name.
+        :type arg_name: str
+        :return: Argument value.
+        :rtype: str
+        """
+        arg_val = self._args.get(arg_name)
+        if arg_val is None:
+            raise Exception("Argument '{0}' not found".format(arg_name))
+
+        return arg_val