separate utils

t/test_util.py

+#!/usr/bin/env python
+# vim:ts=4:sw=4:et:ai:sts=4
+
+import re
+import subprocess
+
+def process_ipcmd(str):
+    cur = None
+    out = {}
+    for line in str.split("\n"):
+        if line == "":
+            cur = None
+            continue
+        match = re.search(r'^(\d+): (\S+): <(\S+)> mtu (\d+) qdisc (\S+)',
+                line)
+        if match != None:
+            cur = match.group(2)
+            out[cur] = {
+                    'idx':      match.group(1),
+                    'flags':    match.group(3).split(","),
+                    'mtu':      match.group(4),
+                    'qdisc':    match.group(5),
+                    'addr':     []
+                    }
+            out[cur]['up'] = 'UP' in out[cur]['flags']
+            continue
+        # Assume cur is defined
+        assert cur != None
+        match = re.search(r'^\s+link/\S* ([0-9a-f:]+)(?: |$)', line)
+        if match != None:
+            out[cur]['lladdr'] = match.group(1)
+            continue
+
+        match = re.search(r'^\s+inet ([0-9.]+)/(\d+)(?: brd ([0-9.]+))?', line)
+        if match != None:
+            out[cur]['addr'].append({
+                'addr': match.group(1),
+                'plen': int(match.group(2)),
+                'bcast': match.group(3),
+                'family': 'inet'})
+            continue
+
+        match = re.search(r'^\s+inet6 ([0-9a-f:]+)/(\d+)(?: |$)', line)
+        if match != None:
+            out[cur]['addr'].append({
+                'addr': match.group(1),
+                'plen': int(match.group(2)),
+                'family': 'inet6'})
+            continue
+
+        match = re.search(r'^\s{6}', line)
+        assert match != None
+    return out
+
+def get_devs():
+    ipcmd = subprocess.Popen(["ip", "addr", "list"],
+            stdout = subprocess.PIPE)
+    (outdata, errdata) = ipcmd.communicate()
+    ipcmd.wait()
+    return process_ipcmd(outdata)
+
+def get_devs_netns(node):
+    (outdata, errdata) = node.run_process(["ip", "addr", "list"])
+    return process_ipcmd(outdata)
+
+