Add functions to get interface name or index from JSON interface dump.

Change-Id: I4778c9fa72e418f6fea427f88fd9aa1ea579ac99
Signed-off-by: Matej Klotton <mklotton@cisco.com>

2 files changed, 76 insertions, 0 deletions

diff --git a/resources/libraries/python/VatJsonUtil.py b/resources/libraries/python/VatJsonUtil.py
index 05c93a1d06..e17375ab56 100644
--- a/resources/libraries/python/VatJsonUtil.py
+++ b/resources/libraries/python/VatJsonUtil.py
@@ -102,6 +102,60 @@ class VatJsonUtil(object):
             ifc['mtu'] = interface_dict["mtu"]
 
     @staticmethod
+    def get_interface_sw_index_from_json(interface_dump_json, interface_name):
+        """Get sw_if_index from given JSON output by interface name.
+
+        :param interface_dump_json: JSON output from dump_interface_list VAT
+        command.
+        :param interface_name: Interface name.
+        :type interface_dump_json: str
+        :type interface_name: str
+        :return: SW interface index.
+        :rtype: int
+        :raises ValueError: If interface not found in interface_dump_json.
+        """
+        logger.trace(interface_dump_json)
+        interface_list = JsonParser().parse_data(interface_dump_json)
+        for interface in interface_list:
+            try:
+                if interface['interface_name'] == interface_name:
+                    index = interface['sw_if_index']
+                    logger.debug('Interface with name {} has sw_if_index {}.'
+                                 .format(interface_name, index))
+                    return index
+            except KeyError:
+                pass
+        raise ValueError('Interface with name {} not found.'
+                         .format(interface_name))
+
+    @staticmethod
+    def get_interface_name_from_json(interface_dump_json, sw_if_index):
+        """Get interface name from given JSON output by sw_if_index.
+
+        :param interface_dump_json: JSON output from dump_interface_list VAT
+        command.
+        :param sw_if_index: SW interface index.
+        :type interface_dump_json: str
+        :type sw_if_index: int
+        :return: Interface name.
+        :rtype: str
+        :raises ValueError: If interface not found in interface_dump_json.
+        """
+        logger.trace(interface_dump_json)
+        interface_list = JsonParser().parse_data(interface_dump_json)
+        for interface in interface_list:
+            try:
+                if interface['sw_if_index'] == sw_if_index:
+                    interface_name = interface['interface_name']
+                    logger.debug('Interface with name {} has sw_if_index {}.'
+                                 .format(interface_name, sw_if_index))
+                    return interface_name
+            except KeyError:
+                pass
+        raise ValueError('Interface with sw_if_index {} not found.'
+                         .format(sw_if_index))
+
+    @staticmethod
     def verify_vat_retval(vat_out, exp_retval=0, err_msg='VAT cmd failed'):
         """Verify return value of VAT command.
 
diff --git a/resources/libraries/robot/ipv4.robot b/resources/libraries/robot/ipv4.robot
index 63a1188332..9e31076772 100644
--- a/resources/libraries/robot/ipv4.robot
+++ b/resources/libraries/robot/ipv4.robot
@@ -103,3 +103,25 @@
 | |          | ...                    | ${dst_mac} | ${src_ip} | ${dst_ip}
 | | Run Traffic Script On Node | arp_request.py | ${tg_node} | ${args}
 
+| IP addresses are set on interfaces
+| | [Documentation] | Iterates through @{args} list and Set Interface Address
+| | ...             | for every (${dut_node}, ${interface}, ${address},
+| | ...             | ${prefix}) tuple.
+| | ...
+| | ... | *Arguments:*
+| | ... | - ${dut_node} - Node where IP address should be set to.
+| | ... |   Type: dictionary
+| | ... | - ${interface} - Interface name. Type: string
+| | ... | - ${address} - IP address. Type: string
+| | ... | - ${prefix} - Prefix length. Type: integer
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| IP addresses are set on interfaces \
+| | ... | \| ${dut1_node} \| ${dut1_to_dut2} \| 192.168.1.1 \| 24 \|
+| | ... | \| ... \| ${dut1_node} \| ${dut1_to_tg}   \| 192.168.2.1 \| 24 \|
+| | ...
+| | [Arguments] | @{args}
+| | :FOR | ${dut_node} | ${interface} | ${address} | ${prefix} | IN | @{args}
+| | | Set Interface Address | ${dut_node} | ${interface} | ${address}
+| | | ... | ${prefix}