PAPI: Fix PyLint errors

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

diff --git a/resources/libraries/python/IPUtil.py b/resources/libraries/python/IPUtil.py
index 4bd8869..cf7034c 100644 (file)
--- a/resources/libraries/python/IPUtil.py
+++ b/resources/libraries/python/IPUtil.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2016 Cisco and/or its affiliates.
+# Copyright (c) 2018 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:
@@ -13,10 +13,12 @@
 
 """Common IP utilities library."""
 
+import re
+
 from ipaddress import IPv4Network, ip_address
 
 from resources.libraries.python.ssh import SSH
-from resources.libraries.python.constants import Constants
+from resources.libraries.python.Constants import Constants
 from resources.libraries.python.ssh import exec_cmd_no_error, exec_cmd
 from resources.libraries.python.topology import Topology
 
@@ -24,6 +26,30 @@ from resources.libraries.python.topology import Topology
 class IPUtil(object):
     """Common IP utilities"""
 
+    @staticmethod
+    def ip_to_int(ip_str):
+        """Convert IP address from string format (e.g. 10.0.0.1) to integer
+        representation (167772161).
+
+        :param ip_str: IP address in string representation.
+        :type ip_str: str
+        :returns: Integer representation of IP address.
+        :rtype: int
+        """
+        return int(ip_address(unicode(ip_str)))
+
+    @staticmethod
+    def int_to_ip(ip_int):
+        """Convert IP address from integer representation (e.g. 167772161) to
+        string format (10.0.0.1).
+
+        :param ip_int: IP address in integer representation.
+        :type ip_int: int
+        :returns: String representation of IP address.
+        :rtype: str
+        """
+        return str(ip_address(ip_int))
+
     @staticmethod
     def vpp_ip_probe(node, interface, addr, if_type="key"):
         """Run ip probe on VPP node.
@@ -113,6 +139,54 @@ class IPUtil(object):
         cmd = 'sysctl -w net.{0}.ip_forward=1'.format(ip_ver)
         exec_cmd_no_error(node, cmd, sudo=True)
 
+    @staticmethod
+    def get_linux_interface_name(node, pci_addr):
+        """Get the interface name.
+
+        :param node: Node where to execute command.
+        :param pci_addr: PCI address
+        :type node: dict
+        :type pci_addr: str
+        :returns: Interface name
+        :rtype: str
+        :raises RuntimeError: If cannot get the information about interfaces.
+        """
+
+        regex_intf_info = r"pci@" \
+                          r"([0-9a-f]{4}:[0-9a-f]{2}:[0-9a-f]{2}.[0-9a-f])\s*" \
+                          r"([a-zA-Z0-9]*)\s*network"
+
+        cmd = "lshw -class network -businfo"
+        ret_code, stdout, stderr = exec_cmd(node, cmd, timeout=30, sudo=True)
+        if ret_code != 0:
+            raise RuntimeError('Could not get information about interfaces, '
+                               'reason:{0}'.format(stderr))
+
+        for line in stdout.splitlines()[2:]:
+            try:
+                if re.search(regex_intf_info, line).group(1) == pci_addr:
+                    return re.search(regex_intf_info, line).group(2)
+            except AttributeError:
+                continue
+        return None
+
+    @staticmethod
+    def set_linux_interface_up(node, interface):
+        """Set the specified interface up.
+
+        :param node: Node where to execute command.
+        :param interface: Interface in namespace.
+        :type node: dict
+        :type interface: str
+        :raises RuntimeError: If the interface could not be set up.
+        """
+
+        cmd = "ip link set {0} up".format(interface)
+        ret_code, _, stderr = exec_cmd(node, cmd, timeout=30, sudo=True)
+        if ret_code != 0:
+            raise RuntimeError('Could not set the interface up, reason:{0}'.
+                               format(stderr))
+
     @staticmethod
     def set_linux_interface_ip(node, interface, ip_addr, prefix,
                                namespace=None):