Add setup and cleanup for maintenance test

JIRA: DOCTOR-106

Change-Id: Idb95e1391e8f9094f68e2c7bc79fd2d7e01af9de
Signed-off-by: Tomi Juvonen <tomi.juvonen@nokia.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/doctor_tests/installer/common/set_compute_config.py b/doctor_tests/installer/common/set_compute_config.py
new file mode 100644
index 00000000..07db1e16
--- /dev/null
+++ b/doctor_tests/installer/common/set_compute_config.py
@@ -0,0 +1,48 @@
+##############################################################################
+# Copyright (c) 2018 Nokia Corporation and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+import os
+import shutil
+
+
+def set_cpu_allocation_ratio():
+    nova_file = '/etc/nova/nova.conf'
+    nova_file_bak = '/etc/nova/nova.bak'
+
+    if not os.path.isfile(nova_file):
+        raise Exception("File doesn't exist: %s." % nova_file)
+    # TODO (tojuvone): Unfortunately ConfigParser did not produce working conf
+    fcheck = open(nova_file)
+    found_list = ([ca for ca in fcheck.readlines() if "cpu_allocation_ratio"
+                  in ca])
+    fcheck.close()
+    if found_list and len(found_list):
+        change = False
+        found = False
+        for car in found_list:
+            if car.startswith('#'):
+                continue
+            if car.startswith('cpu_allocation_ratio'):
+                found = True
+                if "1.0" not in car.split('=')[1]:
+                    change = True
+    if not found or change:
+        # need to add or change
+        shutil.copyfile(nova_file, nova_file_bak)
+        fin = open(nova_file_bak)
+        fout = open(nova_file, "wt")
+        for line in fin:
+            if change and line.startswith("cpu_allocation_ratio"):
+                line = "cpu_allocation_ratio=1.0"
+            if not found and line.startswith("[DEFAULT]"):
+                line += "cpu_allocation_ratio=1.0\n"
+            fout.write(line)
+        fin.close()
+        fout.close()
+
+set_cpu_allocation_ratio()