[PATCH-next 11/25] lnst.Devices.Device: add ips_filter method

From: Ondrej Lichtner <olichtne(a)redhat.com&gt;

The method retuns a list of ip addresses that match the provided
selectors. The selectors are key=value pairs where 'key' is some
attribute of the ipaddress object, if an ipaddress object matches all
the selectors it is added to the return list of the method.

Signed-off-by: Ondrej Lichtner <olichtne(a)redhat.com&gt;
---
 lnst/Devices/Device.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lnst/Devices/Device.py b/lnst/Devices/Device.py
index 0f84a02..2fa4a58 100644
--- a/lnst/Devices/Device.py
+++ b/lnst/Devices/Device.py
@@ -521,6 +521,21 @@ class Device(object):
                 log_exc_traceback()
                 raise DeviceConfigError("IP address flush failed")
 
+    def ips_filter(self, **selectors):
+        result = []
+        for addr in self.ips:
+            match = True
+            for selector, value in selectors.items():
+                try:
+                    if getattr(addr, selector) != value:
+                        match = False
+                        break
+                except:
+                    pass
+            if match:
+                result.append(addr)
+        return result
+
     def up(self):
         """set device up"""
         with pyroute2.IPRoute() as ipr:
-- 
2.17.0