http://git-wip-us.apache.org/repos/asf/ambari/blob/16bee385/ambari-server/src/test/python/TestAmbariServer.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/python/TestAmbariServer.py 
b/ambari-server/src/test/python/TestAmbariServer.py
index e7014fc..71d57a0 100644
--- a/ambari-server/src/test/python/TestAmbariServer.py
+++ b/ambari-server/src/test/python/TestAmbariServer.py
@@ -15,38 +15,48 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 
express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 '''
-
 from stacks.utils.RMFTestCase import *
 
-import StringIO
-import re
-from unittest import TestCase
 import sys
-from mock.mock import patch, MagicMock, create_autospec
-import os, errno, tempfile
-import signal
-import stat
+import os
 import datetime
-import operator
+import errno
 import json
+from mock.mock import patch, MagicMock, create_autospec
+import operator
 from optparse import OptionParser
 import platform
+import re
 import shutil
-from pwd import getpwnam
+import signal
+import stat
+import StringIO
+import tempfile
+from unittest import TestCase
+
+from only_for_platform import only_for_platform, get_platform, PLATFORM_LINUX, 
PLATFORM_WINDOWS
+
+from ambari_commons import Firewall, OSCheck, OSConst, FirewallChecks
+from ambari_commons.logging_utils import get_verbose, set_verbose, get_silent, 
set_silent, get_debug_mode
 from ambari_server.resourceFilesKeeper import ResourceFilesKeeper, 
KeeperException
 from ambari_server import BackupRestore
- 
-# We have to use this import HACK because the filename contains a dash
-from ambari_commons import Firewall, OSCheck, OSConst, FirewallChecks
 
-with patch("platform.linux_distribution", return_value = 
('Suse','11','Final')):
+if get_platform() != PLATFORM_WINDOWS:
+  os_distro_value = ('Suse','11','Final')
+  from pwd import getpwnam
+else:
+  #No Windows tests for now, but start getting prepared
+  os_distro_value = ('win2012serverr2','6.3','WindowsServer')
+
+# We have to use this import HACK because the filename contains a dash
+with patch("platform.linux_distribution", return_value = os_distro_value):
   with patch("os.symlink"):
     with patch("__builtin__.open"):
       with patch("glob.glob", return_value = ['/etc/init.d/postgresql-9.3']):
-        ambari_server = __import__('ambari-server')
+        _ambari_server_ = __import__('ambari-server')
 
-FatalException = ambari_server.FatalException
-NonFatalException = ambari_server.NonFatalException
+FatalException = _ambari_server_.FatalException
+NonFatalException = _ambari_server_.NonFatalException
 CURR_AMBARI_VERSION = "2.0.0"
 
 class TestAmbariServer(TestCase):
@@ -59,8 +69,8 @@ class TestAmbariServer(TestCase):
     sys.stdout = sys.__stdout__
 
 
-  @patch.object(ambari_server, 'configure_database_username_password')
-  @patch.object(ambari_server, 'run_os_command')
+  @patch.object(_ambari_server_, 'configure_database_username_password')
+  @patch.object(_ambari_server_, 'run_os_command')
   @patch('optparse.Values')
   def test_configure_pg_hba_ambaridb_users(self, OptParseValuesMock,
                                            run_os_command_method,
@@ -70,15 +80,15 @@ class TestAmbariServer(TestCase):
     opvm = OptParseValuesMock.return_value
     opvm.database_username = "ffdf"
     tf1 = tempfile.NamedTemporaryFile()
-    ambari_server.PG_HBA_CONF_FILE = tf1.name
+    _ambari_server_.PG_HBA_CONF_FILE = tf1.name
     # Run test
-    ambari_server.configure_pg_hba_ambaridb_users()
+    _ambari_server_.configure_pg_hba_ambaridb_users()
     # Check results
     self.assertTrue(run_os_command_method.called)
     self.assertTrue(configure_database_username_password_method.called)
     string_expected = self.get_file_string(self
     .get_samples_dir("configure_pg_hba_ambaridb_users1"))
-    string_actual = self.get_file_string(ambari_server.PG_HBA_CONF_FILE)
+    string_actual = self.get_file_string(_ambari_server_.PG_HBA_CONF_FILE)
     self.assertEquals(string_expected, string_actual)
     pass
 
@@ -86,9 +96,9 @@ class TestAmbariServer(TestCase):
   def test_servicename_regex(self, raw_input_method):
 
     ''' Test to make sure the service name can contain digits '''
-    ambari_server.SILENT = False
+    set_silent(False)
     raw_input_method.return_value = "OT100"
-    result = ambari_server.get_validated_service_name("ambari", 1)
+    result = _ambari_server_.get_validated_service_name("ambari", 1)
     self.assertEqual("OT100", result, "Not accepting digits")
     pass
 
@@ -96,31 +106,31 @@ class TestAmbariServer(TestCase):
   def test_dbname_regex(self, raw_input_method):
 
     ''' Test to make sure the service name can contain digits '''
-    ambari_server.SILENT = False
+    set_silent(False)
     raw_input_method.return_value = "OT100"
-    result = ambari_server.get_validated_db_name("ambari")
+    result = _ambari_server_.get_validated_db_name("ambari")
     self.assertEqual("OT100", result, "Not accepting digits")
 
 
   def test_configure_pg_hba_postgres_user(self):
 
     tf1 = tempfile.NamedTemporaryFile()
-    ambari_server.PG_HBA_CONF_FILE = tf1.name
+    _ambari_server_.PG_HBA_CONF_FILE = tf1.name
 
-    with open(ambari_server.PG_HBA_CONF_FILE, 'w') as fout:
+    with open(_ambari_server_.PG_HBA_CONF_FILE, 'w') as fout:
       fout.write("\n")
       fout.write("local  all  all md5\n")
       fout.write("host  all   all 0.0.0.0/0  md5\n")
       fout.write("host  all   all ::/0 md5\n")
 
-    ambari_server.configure_pg_hba_postgres_user()
+    _ambari_server_.configure_pg_hba_postgres_user()
 
     expected = self.get_file_string(self.get_samples_dir(
       "configure_pg_hba_ambaridb_users2"))
-    result = self.get_file_string(ambari_server.PG_HBA_CONF_FILE)
+    result = self.get_file_string(_ambari_server_.PG_HBA_CONF_FILE)
     self.assertEqual(expected, result, "pg_hba_conf not processed")
 
-    mode = oct(os.stat(ambari_server.PG_HBA_CONF_FILE)[stat.ST_MODE])
+    mode = oct(os.stat(_ambari_server_.PG_HBA_CONF_FILE)[stat.ST_MODE])
     str_mode = str(mode)[-4:]
     self.assertEqual("0644", str_mode, "Wrong file permissions")
 
@@ -134,7 +144,7 @@ class TestAmbariServer(TestCase):
     # test first input
     raw_input_method.return_value = "Y"
 
-    result = ambari_server.get_choice_string_input(prompt, default,
+    result = _ambari_server_.get_choice_string_input(prompt, default,
                                                    firstChoice, secondChoice)
     self.assertEquals(result, True)
     raw_input_method.reset_mock()
@@ -142,7 +152,7 @@ class TestAmbariServer(TestCase):
 
     raw_input_method.return_value = "N"
 
-    result = ambari_server.get_choice_string_input(prompt, default,
+    result = _ambari_server_.get_choice_string_input(prompt, default,
                                                    firstChoice, secondChoice)
     self.assertEquals(result, False)
 
@@ -152,7 +162,7 @@ class TestAmbariServer(TestCase):
 
     raw_input_method.return_value = ""
 
-    result = ambari_server.get_choice_string_input(prompt, default,
+    result = _ambari_server_.get_choice_string_input(prompt, default,
                                                    firstChoice, secondChoice)
     self.assertEquals(result, default)
 
@@ -166,7 +176,7 @@ class TestAmbariServer(TestCase):
 
     raw_input_method.side_effect = side_effect
 
-    result = ambari_server.get_choice_string_input(prompt, default,
+    result = _ambari_server_.get_choice_string_input(prompt, default,
                                                    firstChoice, secondChoice)
     self.assertEquals(result, True)
     self.assertEquals(raw_input_method.call_count, 3)
@@ -184,11 +194,11 @@ class TestAmbariServer(TestCase):
     pattern = "pattern_pp"
     description = "blabla2"
     # check password input
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_silent())
     is_pass = True
     get_pass_method.return_value = "dfdsfdsfds"
 
-    result = ambari_server.get_validated_string_input(prompt, default,
+    result = _ambari_server_.get_validated_string_input(prompt, default,
                                                       pattern, description, 
is_pass)
 
     self.assertEquals(get_pass_method.return_value, result)
@@ -201,7 +211,7 @@ class TestAmbariServer(TestCase):
     is_pass = False
     raw_input_method.return_value = "dkf90ewuf0"
 
-    result = ambari_server.get_validated_string_input(prompt, default,
+    result = _ambari_server_.get_validated_string_input(prompt, default,
                                                       pattern, description, 
is_pass)
 
     self.assertEquals(raw_input_method.return_value, result)
@@ -210,12 +220,12 @@ class TestAmbariServer(TestCase):
 
 
   def test_get_pass_file_path(self):
-    result = ambari_server.get_pass_file_path("/etc/ambari/conf_file")
+    result = _ambari_server_.get_pass_file_path("/etc/ambari/conf_file")
     self.assertEquals("/etc/ambari/password.dat", result)
     pass
 
 
-  @patch.object(ambari_server, 'setup_security')
+  @patch.object(_ambari_server_, 'setup_security')
   @patch('optparse.OptionParser')
   def test_main_test_setup_security(self, OptionParserMock,
                                     setup_security_method):
@@ -227,46 +237,46 @@ class TestAmbariServer(TestCase):
     options.sid_or_sname = "sid"
     setup_security_method.return_value = None
 
-    ambari_server.main()
+    _ambari_server_.main()
 
-    ambari_server.main()
+    _ambari_server_.main()
     self.assertTrue(setup_security_method.called)
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
-
-  @patch.object(ambari_server, 'setup_ambari_krb5_jaas')
-  @patch.object(ambari_server, 'setup_master_key')
-  @patch.object(ambari_server, 'setup_component_https')
-  @patch.object(ambari_server, 'setup_https')
-  @patch.object(ambari_server, 'get_validated_string_input')
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
+
+  @patch.object(_ambari_server_, 'setup_ambari_krb5_jaas')
+  @patch.object(_ambari_server_, 'setup_master_key')
+  @patch.object(_ambari_server_, 'setup_component_https')
+  @patch.object(_ambari_server_, 'setup_https')
+  @patch.object(_ambari_server_, 'get_validated_string_input')
   def test_setup_security(self, get_validated_string_input_mock, setup_https,
                           setup_component_https, setup_master_key,
                           setup_ambari_krb5_jaas):
 
     args = {}
     get_validated_string_input_mock.return_value = '1'
-    ambari_server.setup_security(args)
+    _ambari_server_.setup_security(args)
     self.assertTrue(setup_https.called)
 
     get_validated_string_input_mock.return_value = '2'
-    ambari_server.setup_security(args)
+    _ambari_server_.setup_security(args)
     self.assertTrue(setup_component_https.called)
     setup_component_https.assert_called_with("Ganglia", "setup-ganglia-https",
-                          ambari_server.GANGLIA_HTTPS, "ganglia_cert")
+                          _ambari_server_.GANGLIA_HTTPS, "ganglia_cert")
 
     get_validated_string_input_mock.return_value = '3'
-    ambari_server.setup_security(args)
+    _ambari_server_.setup_security(args)
     self.assertTrue(setup_master_key.called)
 
     get_validated_string_input_mock.return_value = '4'
-    ambari_server.setup_security(args)
+    _ambari_server_.setup_security(args)
     self.assertTrue(setup_ambari_krb5_jaas.called)
 
 
   @patch('re.sub')
   @patch('fileinput.FileInput')
-  @patch.object(ambari_server, 'get_validated_string_input')
-  @patch.object(ambari_server, 'search_file')
+  @patch.object(_ambari_server_, 'get_validated_string_input')
+  @patch.object(_ambari_server_, 'search_file')
   @patch('os.path.exists')
   def test_setup_ambari_krb5_jaas(self, exists_mock, search_mock,
                                   get_validated_string_input_mock,
@@ -277,7 +287,7 @@ class TestAmbariServer(TestCase):
 
     # Negative case
     try:
-      ambari_server.setup_ambari_krb5_jaas()
+      _ambari_server_.setup_ambari_krb5_jaas()
       self.fail("Should throw exception")
     except NonFatalException as fe:
       # Expected
@@ -292,17 +302,17 @@ class TestAmbariServer(TestCase):
 
     fileinput_mock.return_value = [ 'keyTab=xyz', 'principal=xyz' ]
 
-    ambari_server.setup_ambari_krb5_jaas()
+    _ambari_server_.setup_ambari_krb5_jaas()
 
     self.assertTrue(fileinput_mock.called)
     self.assertTrue(re_sub_mock.called)
     self.assertTrue(re_sub_mock.call_args_list, [('[email protected]'),
                                                  ('pathtokeytab')])
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
   @patch('optparse.OptionParser')
   def test_main_test_setup(self, OptionParserMock, reset_method, stop_method,
                            start_method, setup_method):
@@ -313,21 +323,21 @@ class TestAmbariServer(TestCase):
 
     options.dbms = None
     options.sid_or_sname = "sid"
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertTrue(setup_method.called)
     self.assertFalse(start_method.called)
     self.assertFalse(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
 
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
   @patch('optparse.OptionParser')
   def test_main_test_start(self, OptionParserMock, reset_method, stop_method,
                            start_method, setup_method):
@@ -338,21 +348,21 @@ class TestAmbariServer(TestCase):
 
     options.dbms = None
     options.sid_or_sname = "sname"
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertTrue(setup_method.called)
     self.assertFalse(start_method.called)
     self.assertFalse(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
 
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
   @patch('optparse.OptionParser')
   def test_main_test_start_debug_short(self, OptionParserMock, reset_method, 
stop_method,
                                        start_method, setup_method):
@@ -364,20 +374,20 @@ class TestAmbariServer(TestCase):
     options.dbms = None
     options.sid_or_sname = "sid"
 
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertFalse(setup_method.called)
     self.assertTrue(start_method.called)
     self.assertFalse(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertTrue(ambari_server.SERVER_DEBUG_MODE)
+    self.assertTrue(get_debug_mode())
 
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
   @patch('optparse.OptionParser')
   def test_main_test_start_debug_long(self, OptionParserMock, reset_method, 
stop_method,
                                       start_method, setup_method):
@@ -388,21 +398,21 @@ class TestAmbariServer(TestCase):
     options.dbms = None
     options.sid_or_sname = "sid"
 
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertFalse(setup_method.called)
     self.assertTrue(start_method.called)
     self.assertFalse(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertTrue(ambari_server.SERVER_DEBUG_MODE)
+    self.assertTrue(get_debug_mode())
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
-  @patch.object(ambari_server, 'backup')
-  @patch.object(ambari_server, 'restore')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
+  @patch.object(_ambari_server_, 'backup')
+  @patch.object(_ambari_server_, 'restore')
   @patch('optparse.OptionParser')
   def test_main_test_backup(self, OptionParserMock, restore_mock, backup_mock, 
reset_method, stop_method,
                            start_method, setup_method):
@@ -413,7 +423,7 @@ class TestAmbariServer(TestCase):
 
     options.dbms = None
     options.sid_or_sname = "sname"
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertTrue(backup_mock.called)
     self.assertFalse(restore_mock.called)
@@ -422,15 +432,15 @@ class TestAmbariServer(TestCase):
     self.assertFalse(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
-  @patch.object(ambari_server, 'backup')
-  @patch.object(ambari_server, 'restore')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
+  @patch.object(_ambari_server_, 'backup')
+  @patch.object(_ambari_server_, 'restore')
   @patch('optparse.OptionParser')
   def test_main_test_restore(self, OptionParserMock, restore_mock, 
backup_mock, reset_method, stop_method,
                             start_method, setup_method):
@@ -441,7 +451,7 @@ class TestAmbariServer(TestCase):
 
     options.dbms = None
     options.sid_or_sname = "sname"
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertTrue(restore_mock.called)
     self.assertFalse(backup_mock.called)
@@ -450,13 +460,13 @@ class TestAmbariServer(TestCase):
     self.assertFalse(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
   @patch('optparse.OptionParser')
   def test_main_test_stop(self, OptionParserMock, reset_method, stop_method,
                           start_method, setup_method):
@@ -468,21 +478,21 @@ class TestAmbariServer(TestCase):
     options.dbms = None
     options.sid_or_sname = "sid"
 
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertFalse(setup_method.called)
     self.assertFalse(start_method.called)
     self.assertTrue(stop_method.called)
     self.assertFalse(reset_method.called)
 
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
 
 
-  @patch.object(ambari_server, 'setup')
-  @patch.object(ambari_server, 'start')
-  @patch.object(ambari_server, 'stop')
-  @patch.object(ambari_server, 'reset')
+  @patch.object(_ambari_server_, 'setup')
+  @patch.object(_ambari_server_, 'start')
+  @patch.object(_ambari_server_, 'stop')
+  @patch.object(_ambari_server_, 'reset')
   @patch('optparse.OptionParser')
   def test_main_test_reset(self, OptionParserMock, reset_method, stop_method,
                            start_method, setup_method):
@@ -494,42 +504,42 @@ class TestAmbariServer(TestCase):
     options.dbms = None
     options.sid_or_sname = "sid"
 
-    ambari_server.main()
+    _ambari_server_.main()
 
     self.assertFalse(setup_method.called)
     self.assertFalse(start_method.called)
     self.assertFalse(stop_method.called)
     self.assertTrue(reset_method.called)
 
-    self.assertFalse(False, ambari_server.VERBOSE)
-    self.assertFalse(False, ambari_server.SILENT)
+    self.assertFalse(False, get_verbose())
+    self.assertFalse(False, get_silent())
 
 
   def test_configure_postgresql_conf(self):
     tf1 = tempfile.NamedTemporaryFile()
-    ambari_server.POSTGRESQL_CONF_FILE = tf1.name
+    _ambari_server_.POSTGRESQL_CONF_FILE = tf1.name
 
-    with open(ambari_server.POSTGRESQL_CONF_FILE, 'w') as f:
+    with open(_ambari_server_.POSTGRESQL_CONF_FILE, 'w') as f:
       f.write("#listen_addresses = '127.0.0.1'        #\n")
       f.write("#listen_addresses = '127.0.0.1'")
 
-    ambari_server.configure_postgresql_conf()
+    _ambari_server_.configure_postgresql_conf()
 
     expected = self.get_file_string(self.get_samples_dir(
       "configure_postgresql_conf1"))
-    result = self.get_file_string(ambari_server.POSTGRESQL_CONF_FILE)
+    result = self.get_file_string(_ambari_server_.POSTGRESQL_CONF_FILE)
     self.assertEqual(expected, result, "postgresql.conf not updated")
 
-    mode = oct(os.stat(ambari_server.POSTGRESQL_CONF_FILE)[stat.ST_MODE])
+    mode = oct(os.stat(_ambari_server_.POSTGRESQL_CONF_FILE)[stat.ST_MODE])
     str_mode = str(mode)[-4:]
     self.assertEqual("0644", str_mode, "Wrong file permissions")
 
 
-  @patch.object(ambari_server, "restart_postgres")
-  @patch.object(ambari_server, "get_postgre_status")
-  @patch.object(ambari_server, "configure_postgresql_conf")
-  @patch.object(ambari_server, "configure_pg_hba_ambaridb_users")
-  @patch.object(ambari_server, "configure_pg_hba_postgres_user")
+  @patch.object(_ambari_server_, "restart_postgres")
+  @patch.object(_ambari_server_, "get_postgre_status")
+  @patch.object(_ambari_server_, "configure_postgresql_conf")
+  @patch.object(_ambari_server_, "configure_pg_hba_ambaridb_users")
+  @patch.object(_ambari_server_, "configure_pg_hba_postgres_user")
   def test_configure_postgres(self, configure_pg_hba_postgres_user_mock,
                               configure_pg_hba_ambaridb_users_mock,
                               configure_postgresql_conf_mock,
@@ -537,65 +547,65 @@ class TestAmbariServer(TestCase):
                               restart_postgres_mock):
     tf1 = tempfile.NamedTemporaryFile()
     tf2 = tempfile.NamedTemporaryFile()
-    ambari_server.PG_HBA_CONF_FILE = tf1.name
-    ambari_server.PG_HBA_CONF_FILE_BACKUP = tf2.name
+    _ambari_server_.PG_HBA_CONF_FILE = tf1.name
+    _ambari_server_.PG_HBA_CONF_FILE_BACKUP = tf2.name
     args = MagicMock()
 
     out = StringIO.StringIO()
     sys.stdout = out
-    retcode, out1, err = ambari_server.configure_postgres()
+    retcode, out1, err = _ambari_server_.configure_postgres()
     sys.stdout = sys.__stdout__
     self.assertEqual(0, retcode)
     self.assertEqual("Backup for pg_hba found, reconfiguration not required\n",
                      out.getvalue())
 
-    ambari_server.PG_HBA_CONF_FILE_BACKUP = tempfile.mktemp()
-    get_postgre_status_mock.return_value = ambari_server.PG_STATUS_RUNNING, 0, 
"", ""
+    _ambari_server_.PG_HBA_CONF_FILE_BACKUP = tempfile.mktemp()
+    get_postgre_status_mock.return_value = _ambari_server_.PG_STATUS_RUNNING, 
0, "", ""
     restart_postgres_mock.return_value = 0, "", ""
 
-    rcode, out, err = ambari_server.configure_postgres()
+    rcode, out, err = _ambari_server_.configure_postgres()
 
-    self.assertTrue(os.path.isfile(ambari_server.PG_HBA_CONF_FILE_BACKUP),
+    self.assertTrue(os.path.isfile(_ambari_server_.PG_HBA_CONF_FILE_BACKUP),
                     "postgresql.conf backup not created")
     self.assertTrue(configure_pg_hba_postgres_user_mock.called)
     self.assertTrue(configure_pg_hba_ambaridb_users_mock.called)
-    mode = oct(os.stat(ambari_server.PG_HBA_CONF_FILE)[stat.ST_MODE])
+    mode = oct(os.stat(_ambari_server_.PG_HBA_CONF_FILE)[stat.ST_MODE])
     str_mode = str(mode)[-4:]
     self.assertEqual("0644", str_mode, "Wrong file permissions")
     self.assertTrue(configure_postgresql_conf_mock.called)
     self.assertEqual(0, rcode)
 
-    os.unlink(ambari_server.PG_HBA_CONF_FILE_BACKUP)
+    os.unlink(_ambari_server_.PG_HBA_CONF_FILE_BACKUP)
     get_postgre_status_mock.return_value = "stopped", 0, "", ""
-    rcode, out, err = ambari_server.configure_postgres()
+    rcode, out, err = _ambari_server_.configure_postgres()
     self.assertEqual(0, rcode)
-    os.unlink(ambari_server.PG_HBA_CONF_FILE_BACKUP)
+    os.unlink(_ambari_server_.PG_HBA_CONF_FILE_BACKUP)
     sys.stdout = sys.__stdout__
 
 
   @patch("time.sleep")
   @patch("subprocess.Popen")
-  @patch.object(ambari_server, "run_os_command")
-  @patch.object(ambari_server, "get_postgre_status")
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "run_os_command")
+  @patch.object(_ambari_server_, "get_postgre_status")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_restart_postgres(self, printInfoMsg_mock, get_postgre_status_mock,
                             run_os_command_mock, popenMock, sleepMock):
     p = MagicMock()
     p.poll.return_value = 0
     popenMock.return_value = p
-    retcode, out, err = ambari_server.restart_postgres()
+    retcode, out, err = _ambari_server_.restart_postgres()
     self.assertEqual(0, retcode)
 
     p.poll.return_value = None
     get_postgre_status_mock.return_value = "stopped", 0, "", ""
     run_os_command_mock.return_value = (1, None, None)
-    retcode, out, err = ambari_server.restart_postgres()
+    retcode, out, err = _ambari_server_.restart_postgres()
     self.assertEqual(1, retcode)
 
 
   @patch("shlex.split")
   @patch("subprocess.Popen")
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_run_os_command(self, printInfoMsg_mock, popenMock, splitMock):
 
     p = MagicMock()
@@ -605,151 +615,151 @@ class TestAmbariServer(TestCase):
 
     # with list arg
     cmd = ["exec", "arg"]
-    ambari_server.run_os_command(cmd)
+    _ambari_server_.run_os_command(cmd)
     self.assertFalse(splitMock.called)
 
     # with str arg
-    resp = ambari_server.run_os_command("runme")
+    resp = _ambari_server_.run_os_command("runme")
     self.assertEqual(3, resp[0])
     self.assertTrue(splitMock.called)
 
 
-  @patch.object(ambari_server, "get_conf_dir")
-  @patch.object(ambari_server, "search_file")
+  @patch.object(_ambari_server_, "get_conf_dir")
+  @patch.object(_ambari_server_, "search_file")
   def test_write_property(self, search_file_mock, get_conf_dir_mock):
 
     expected_content = "key1=val1\n"
 
     tf1 = tempfile.NamedTemporaryFile()
     search_file_mock.return_value = tf1.name
-    ambari_server.write_property("key1", "val1")
+    _ambari_server_.write_property("key1", "val1")
     result = tf1.read()
     self.assertTrue(expected_content in result)
 
 
-  @patch.object(ambari_server, "configure_database_username_password")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "configure_database_username_password")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_setup_db(self, run_os_command_mock,
                     configure_database_username_password_mock):
 
     run_os_command_mock.return_value = (0, None, None)
-    result = ambari_server.setup_db(MagicMock())
+    result = _ambari_server_.setup_db(MagicMock())
     self.assertTrue(configure_database_username_password_mock.called)
     self.assertEqual((0, None, None), result)
 
-  @patch.object(ambari_server, "configure_database_username_password")
+  @patch.object(_ambari_server_, "configure_database_username_password")
   @patch("time.sleep")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_setup_db_connect_attempts_fail(self, run_os_command_mock,
                                           sleep_mock, config_db_mock):
     run_os_command_mock.side_effect = [(1, "error", "error"), (1, "error", 
"error"),
                                        (1, "error", "error")]
-    result = ambari_server.setup_db(MagicMock())
+    result = _ambari_server_.setup_db(MagicMock())
     self.assertTrue(run_os_command_mock.called)
     self.assertEqual((1, 'error', 'error') , result)
     self.assertEqual(2, sleep_mock.call_count)
     pass
 
-  @patch.object(ambari_server, "configure_database_username_password")
+  @patch.object(_ambari_server_, "configure_database_username_password")
   @patch("time.sleep")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_setup_db_connect_attempts_success(self, run_os_command_mock,
                                              sleep_mock, config_db_mock):
     run_os_command_mock.side_effect = [(1, "error", "error"), (0, None, None),
                                        (0, None, None)]
-    result = ambari_server.setup_db(MagicMock())
+    result = _ambari_server_.setup_db(MagicMock())
     self.assertTrue(run_os_command_mock.called)
     self.assertEqual((0, None, None) , result)
     self.assertEqual(1, sleep_mock.call_count)
     pass
 
-  @patch.object(ambari_server, "get_YN_input")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "get_YN_input")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_check_selinux(self, run_os_command_mock, getYNInput_mock):
-    run_os_command_mock.return_value = (0, ambari_server.SE_STATUS_DISABLED,
+    run_os_command_mock.return_value = (0, _ambari_server_.SE_STATUS_DISABLED,
                                         None)
-    rcode = ambari_server.check_selinux()
+    rcode = _ambari_server_.check_selinux()
     self.assertEqual(0, rcode)
 
     getYNInput_mock.return_value = True
     run_os_command_mock.return_value = (0, "enabled "
-                                           + ambari_server.SE_MODE_ENFORCING,
+                                           + _ambari_server_.SE_MODE_ENFORCING,
                                         None)
-    rcode = ambari_server.check_selinux()
+    rcode = _ambari_server_.check_selinux()
     self.assertEqual(0, rcode)
     self.assertTrue(run_os_command_mock.called)
     self.assertTrue(getYNInput_mock.called)
 
 
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_get_ambari_jars(self, printInfoMsg_mock):
 
     env = "/ambari/jars"
-    os.environ[ambari_server.AMBARI_SERVER_LIB] = env
-    result = ambari_server.get_ambari_jars()
+    os.environ[_ambari_server_.AMBARI_SERVER_LIB] = env
+    result = _ambari_server_.get_ambari_jars()
     self.assertEqual(env, result)
 
-    del os.environ[ambari_server.AMBARI_SERVER_LIB]
-    result = ambari_server.get_ambari_jars()
+    del os.environ[_ambari_server_.AMBARI_SERVER_LIB]
+    result = _ambari_server_.get_ambari_jars()
     self.assertEqual("/usr/lib/ambari-server", result)
     self.assertTrue(printInfoMsg_mock.called)
 
 
   @patch("glob.glob")
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_get_share_jars(self, printInfoMsg_mock, globMock):
     globMock.return_value = ["one", "two"]
     expected = "one:two:one:two"
-    result = ambari_server.get_share_jars()
+    result = _ambari_server_.get_share_jars()
     self.assertEqual(expected, result)
     globMock.return_value = []
     expected = ""
-    result = ambari_server.get_share_jars()
+    result = _ambari_server_.get_share_jars()
     self.assertEqual(expected, result)
 
 
   @patch("glob.glob")
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_get_ambari_classpath(self, printInfoMsg_mock, globMock):
     globMock.return_value = ["one"]
-    result = ambari_server.get_ambari_classpath()
-    self.assertTrue(ambari_server.get_ambari_jars() in result)
-    self.assertTrue(ambari_server.get_share_jars() in result)
+    result = _ambari_server_.get_ambari_classpath()
+    self.assertTrue(_ambari_server_.get_ambari_jars() in result)
+    self.assertTrue(_ambari_server_.get_share_jars() in result)
     globMock.return_value = []
-    result = ambari_server.get_ambari_classpath()
-    self.assertTrue(ambari_server.get_ambari_jars() in result)
+    result = _ambari_server_.get_ambari_classpath()
+    self.assertTrue(_ambari_server_.get_ambari_jars() in result)
     self.assertFalse(":" in result)
 
 
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_get_conf_dir(self, printInfoMsg_mock):
     env = "/dummy/ambari/conf"
-    os.environ[ambari_server.AMBARI_CONF_VAR] = env
-    result = ambari_server.get_conf_dir()
+    os.environ[_ambari_server_.AMBARI_CONF_VAR] = env
+    result = _ambari_server_.get_conf_dir()
     self.assertEqual(env, result)
 
-    del os.environ[ambari_server.AMBARI_CONF_VAR]
-    result = ambari_server.get_conf_dir()
+    del os.environ[_ambari_server_.AMBARI_CONF_VAR]
+    result = _ambari_server_.get_conf_dir()
     self.assertEqual("/etc/ambari-server/conf", result)
 
 
   def test_search_file(self):
 
     path = os.path.dirname(__file__)
-    result = ambari_server.search_file(__file__, path)
+    result = _ambari_server_.search_file(__file__, path)
     expected = os.path.abspath(__file__)
     self.assertEqual(expected, result)
 
-    result = ambari_server.search_file("non_existent_file", path)
+    result = _ambari_server_.search_file("non_existent_file", path)
     self.assertEqual(None, result)
 
 
-  @patch.object(ambari_server, "search_file")
+  @patch.object(_ambari_server_, "search_file")
   def test_find_properties_file(self, search_file_mock):
     # Testing case when file is not found
     search_file_mock.return_value = None
     try:
-      ambari_server.find_properties_file()
+      _ambari_server_.find_properties_file()
       self.fail("File not found'")
     except FatalException:
       # Expected
@@ -759,11 +769,11 @@ class TestAmbariServer(TestCase):
     # Testing case when file is found
     value = MagicMock()
     search_file_mock.return_value = value
-    result = ambari_server.find_properties_file()
+    result = _ambari_server_.find_properties_file()
     self.assertTrue(result is value)
 
 
-  @patch.object(ambari_server, "find_properties_file")
+  @patch.object(_ambari_server_, "find_properties_file")
   @patch("__builtin__.open")
   @patch("ambari-server.Properties")
   def test_read_ambari_user(self, properties_mock, open_mock, 
find_properties_file_mock):
@@ -771,19 +781,19 @@ class TestAmbariServer(TestCase):
     find_properties_file_mock.return_value = "dummy"
     # Testing with defined user
     properties_mock.return_value.__getitem__.return_value = "dummy_user"
-    user = ambari_server.read_ambari_user()
+    user = _ambari_server_.read_ambari_user()
     self.assertEquals(user, "dummy_user")
     # Testing with undefined user
     properties_mock.return_value.__getitem__.return_value = None
-    user = ambari_server.read_ambari_user()
+    user = _ambari_server_.read_ambari_user()
     self.assertEquals(user, None)
 
 
   @patch("os.path.exists")
-  @patch.object(ambari_server, "set_file_permissions")
-  @patch.object(ambari_server, "run_os_command")
-  @patch.object(ambari_server, "get_ambari_properties")
-  @patch.object(ambari_server, "get_value_from_properties")
+  @patch.object(_ambari_server_, "set_file_permissions")
+  @patch.object(_ambari_server_, "run_os_command")
+  @patch.object(_ambari_server_, "get_ambari_properties")
+  @patch.object(_ambari_server_, "get_value_from_properties")
   @patch("os.mkdir")
   def test_adjust_directory_permissions(self, mkdir_mock,
                                         get_value_from_properties_mock, 
get_ambari_properties_mock,
@@ -791,39 +801,39 @@ class TestAmbariServer(TestCase):
     # Testing boostrap dir wipe
     properties_mock = MagicMock()
     get_value_from_properties_mock.return_value = "dummy_bootstrap_dir"
-    ambari_server.adjust_directory_permissions("user")
+    _ambari_server_.adjust_directory_permissions("user")
     exists_mock.return_value = False
     self.assertEquals(run_os_command_mock.call_args_list[0][0][0], "rm -rf 
dummy_bootstrap_dir")
     self.assertTrue(mkdir_mock.called)
 
     set_file_permissions_mock.reset_mock()
     # Test recursive calls
-    old_list = ambari_server.NR_ADJUST_OWNERSHIP_LIST
+    old_list = _ambari_server_.NR_ADJUST_OWNERSHIP_LIST
 
-    ambari_server.NR_ADJUST_OWNERSHIP_LIST = [
+    _ambari_server_.NR_ADJUST_OWNERSHIP_LIST = [
       ( "/etc/ambari-server/conf", "755", "{0}", True ),
       ( "/etc/ambari-server/conf/ambari.properties", "644", "{0}", False )
     ]
 
-    ambari_server.adjust_directory_permissions("user")
+    _ambari_server_.adjust_directory_permissions("user")
     self.assertTrue(len(set_file_permissions_mock.call_args_list) ==
-                    len(ambari_server.NR_ADJUST_OWNERSHIP_LIST))
+                    len(_ambari_server_.NR_ADJUST_OWNERSHIP_LIST))
     self.assertEquals(set_file_permissions_mock.call_args_list[0][0][3], True)
     self.assertEquals(set_file_permissions_mock.call_args_list[1][0][3], False)
 
-    ambari_server.NR_ADJUST_OWNERSHIP_LIST = old_list
+    _ambari_server_.NR_ADJUST_OWNERSHIP_LIST = old_list
 
 
   @patch("os.path.exists")
-  @patch.object(ambari_server, "run_os_command")
-  @patch.object(ambari_server, "print_warning_msg")
-  @patch.object(ambari_server, "print_info_msg")
+  @patch.object(_ambari_server_, "run_os_command")
+  @patch.object(_ambari_server_, "print_warning_msg")
+  @patch.object(_ambari_server_, "print_info_msg")
   def test_set_file_permissions(self, print_info_msg_mock, 
print_warning_msg_mock,
                                 run_os_command_mock, exists_mock):
 
     # Testing not existent file scenario
     exists_mock.return_value = False
-    ambari_server.set_file_permissions("dummy-file", "dummy-mod",
+    _ambari_server_.set_file_permissions("dummy-file", "dummy-mod",
                                        "dummy-user", False)
     self.assertFalse(run_os_command_mock.called)
     self.assertTrue(print_info_msg_mock.called)
@@ -834,7 +844,7 @@ class TestAmbariServer(TestCase):
     # Testing OK scenario
     exists_mock.return_value = True
     run_os_command_mock.side_effect = [(0, "", ""), (0, "", "")]
-    ambari_server.set_file_permissions("dummy-file", "dummy-mod",
+    _ambari_server_.set_file_permissions("dummy-file", "dummy-mod",
                                        "dummy-user", False)
     self.assertTrue(len(run_os_command_mock.call_args_list) == 2)
     self.assertFalse(print_warning_msg_mock.called)
@@ -844,7 +854,7 @@ class TestAmbariServer(TestCase):
 
     # Testing first command fail
     run_os_command_mock.side_effect = [(1, "", ""), (0, "", "")]
-    ambari_server.set_file_permissions("dummy-file", "dummy-mod",
+    _ambari_server_.set_file_permissions("dummy-file", "dummy-mod",
                                        "dummy-user", False)
     self.assertTrue(len(run_os_command_mock.call_args_list) == 2)
     self.assertTrue(print_warning_msg_mock.called)
@@ -854,7 +864,7 @@ class TestAmbariServer(TestCase):
 
     # Testing second command fail
     run_os_command_mock.side_effect = [(0, "", ""), (1, "", "")]
-    ambari_server.set_file_permissions("dummy-file", "dummy-mod",
+    _ambari_server_.set_file_permissions("dummy-file", "dummy-mod",
                                        "dummy-user", False)
     self.assertTrue(len(run_os_command_mock.call_args_list) == 2)
     self.assertTrue(print_warning_msg_mock.called)
@@ -866,7 +876,7 @@ class TestAmbariServer(TestCase):
 
     exists_mock.return_value = True
     run_os_command_mock.side_effect = [(0, "", ""), (0, "", "")]
-    ambari_server.set_file_permissions("dummy-file", "dummy-mod",
+    _ambari_server_.set_file_permissions("dummy-file", "dummy-mod",
                                        "dummy-user", True)
     self.assertTrue(len(run_os_command_mock.call_args_list) == 2)
     self.assertTrue("-R" in run_os_command_mock.call_args_list[0][0][0])
@@ -880,7 +890,7 @@ class TestAmbariServer(TestCase):
 
     exists_mock.return_value = True
     run_os_command_mock.side_effect = [(0, "", ""), (0, "", "")]
-    ambari_server.set_file_permissions("dummy-file", "dummy-mod",
+    _ambari_server_.set_file_permissions("dummy-file", "dummy-mod",
                                        "dummy-user", False)
     self.assertTrue(len(run_os_command_mock.call_args_list) == 2)
     self.assertFalse("-R" in run_os_command_mock.call_args_list[0][0][0])
@@ -891,10 +901,10 @@ class TestAmbariServer(TestCase):
     print_warning_msg_mock.reset_mock()
 
 
-  @patch.object(ambari_server, "get_validated_string_input")
-  @patch.object(ambari_server, "print_info_msg")
-  @patch.object(ambari_server, "print_warning_msg")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "get_validated_string_input")
+  @patch.object(_ambari_server_, "print_info_msg")
+  @patch.object(_ambari_server_, "print_warning_msg")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_create_custom_user(self, run_os_command_mock, 
print_warning_msg_mock,
                               print_info_msg_mock, 
get_validated_string_input_mock):
     user = "dummy-user"
@@ -902,7 +912,7 @@ class TestAmbariServer(TestCase):
 
     # Testing scenario: absent user
     run_os_command_mock.side_effect = [(0, "", "")]
-    result = ambari_server.create_custom_user()
+    result = _ambari_server_.create_custom_user()
     self.assertFalse(print_warning_msg_mock.called)
     self.assertEquals(result, (0, user))
 
@@ -912,7 +922,7 @@ class TestAmbariServer(TestCase):
 
     # Testing scenario: existing user
     run_os_command_mock.side_effect = [(9, "", "")]
-    result = ambari_server.create_custom_user()
+    result = _ambari_server_.create_custom_user()
     self.assertTrue("User dummy-user already exists" in 
str(print_info_msg_mock.call_args_list[1][0]))
     self.assertEquals(result, (0, user))
 
@@ -922,17 +932,17 @@ class TestAmbariServer(TestCase):
 
     # Testing scenario: os command fail
     run_os_command_mock.side_effect = [(1, "", "")]
-    result = ambari_server.create_custom_user()
+    result = _ambari_server_.create_custom_user()
     self.assertTrue(print_warning_msg_mock.called)
     self.assertEquals(result, (1, None))
 
 
-  @patch.object(ambari_server, "read_ambari_user")
-  @patch.object(ambari_server, "get_YN_input")
-  @patch.object(ambari_server, "create_custom_user")
-  @patch.object(ambari_server, "write_property")
-  @patch.object(ambari_server, "adjust_directory_permissions")
-  @patch.object(ambari_server, "print_error_msg")
+  @patch.object(_ambari_server_, "read_ambari_user")
+  @patch.object(_ambari_server_, "get_YN_input")
+  @patch.object(_ambari_server_, "create_custom_user")
+  @patch.object(_ambari_server_, "write_property")
+  @patch.object(_ambari_server_, "adjust_directory_permissions")
+  @patch.object(_ambari_server_, "print_error_msg")
   def test_check_ambari_user(self, print_error_msg_mock,
                              adjust_directory_permissions_mock, 
write_property_mock,
                              create_custom_user_mock, get_YN_input_mock, 
read_ambari_user_mock):
@@ -940,7 +950,7 @@ class TestAmbariServer(TestCase):
     # Scenario: user is already defined, user does not want to reconfigure it
     read_ambari_user_mock.return_value = "dummy-user"
     get_YN_input_mock.return_value = False
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertFalse(write_property_mock.called)
     self.assertFalse(create_custom_user_mock.called)
@@ -957,7 +967,7 @@ class TestAmbariServer(TestCase):
     read_ambari_user_mock.return_value = "dummy-user"
     create_custom_user_mock.return_value = (0, "new-dummy-user")
     get_YN_input_mock.return_value = True
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertTrue(write_property_mock.called)
     self.assertTrue(write_property_mock.call_args[0][1] == "new-dummy-user")
@@ -976,7 +986,7 @@ class TestAmbariServer(TestCase):
     read_ambari_user_mock.return_value = "dummy-user"
     create_custom_user_mock.return_value = (1, None)
     get_YN_input_mock.return_value = True
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertTrue(create_custom_user_mock.called)
     self.assertFalse(write_property_mock.called)
@@ -992,7 +1002,7 @@ class TestAmbariServer(TestCase):
     read_ambari_user_mock.return_value = None
     get_YN_input_mock.return_value = True
     create_custom_user_mock.return_value = (0, "dummy-user")
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertTrue(create_custom_user_mock.called)
     self.assertTrue(write_property_mock.called)
@@ -1010,7 +1020,7 @@ class TestAmbariServer(TestCase):
     read_ambari_user_mock.return_value = None
     get_YN_input_mock.return_value = True
     create_custom_user_mock.return_value = (1, None)
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertTrue(create_custom_user_mock.called)
     self.assertFalse(write_property_mock.called)
@@ -1027,7 +1037,7 @@ class TestAmbariServer(TestCase):
     read_ambari_user_mock.return_value = None
     get_YN_input_mock.return_value = True
     create_custom_user_mock.return_value = (1, None)
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertTrue(create_custom_user_mock.called)
     self.assertFalse(write_property_mock.called)
@@ -1042,7 +1052,7 @@ class TestAmbariServer(TestCase):
     # Scenario: user is not defined and left to be root
     read_ambari_user_mock.return_value = None
     get_YN_input_mock.return_value = False
-    result = ambari_server.check_ambari_user()
+    result = _ambari_server_.check_ambari_user()
     self.assertTrue(get_YN_input_mock.called)
     self.assertFalse(create_custom_user_mock.called)
     self.assertTrue(write_property_mock.called)
@@ -1051,15 +1061,15 @@ class TestAmbariServer(TestCase):
     self.assertEqual(result, 0)
 
 
-  @patch.object(ambari_server, "search_file")
+  @patch.object(_ambari_server_, "search_file")
   @patch("__builtin__.open")
-  @patch.object(ambari_server, "read_ambari_user")
-  @patch.object(ambari_server, "set_file_permissions")
+  @patch.object(_ambari_server_, "read_ambari_user")
+  @patch.object(_ambari_server_, "set_file_permissions")
   def test_store_password_file(self, set_file_permissions_mock,
                                read_ambari_user_mock, open_mock, 
search_file_mock):
     search_file_mock.return_value = "/etc/ambari-server/conf/ambari.properties"
     open_mock.return_value = MagicMock()
-    ambari_server.store_password_file("password", "passfile")
+    _ambari_server_.store_password_file("password", "passfile")
     self.assertTrue(set_file_permissions_mock.called)
 
   @patch("subprocess.Popen")
@@ -1129,14 +1139,14 @@ class TestAmbariServer(TestCase):
 
     out = StringIO.StringIO()
     sys.stdout = out
-    ambari_server.dlprogress("filename", 10, 2, 100)
+    _ambari_server_.dlprogress("filename", 10, 2, 100)
     sys.stdout = sys.__stdout__
     self.assertNotEqual("", out.getvalue())
 
 
   @patch("urllib2.urlopen")
   @patch("__builtin__.open")
-  @patch.object(ambari_server, "dlprogress")
+  @patch.object(_ambari_server_, "dlprogress")
   def test_track_jdk(self, dlprogress_mock, openMock, urlopenMock):
 
     u = MagicMock()
@@ -1152,7 +1162,7 @@ class TestAmbariServer(TestCase):
     f = MagicMock()
     openMock.return_value = f
 
-    ambari_server.track_jdk("base", "url", "local")
+    _ambari_server_.track_jdk("base", "url", "local")
 
     self.assertEqual(0, len(chunks))
     self.assertTrue(f.write.called)
@@ -1164,7 +1174,7 @@ class TestAmbariServer(TestCase):
   @patch("os.path.join")
   @patch("os.path.exists")
   @patch("os.path.isdir")
-  @patch.object(ambari_server, "get_ambari_properties")
+  @patch.object(_ambari_server_, "get_ambari_properties")
   def test_install_jce_manualy(self, get_ambari_properties_mock, \
                                os_path_isdir_mock, os_path_exists_mock, 
os_path_join_mock, \
                                shutil_copy_mock):
@@ -1178,7 +1188,7 @@ class TestAmbariServer(TestCase):
     # Case when JCE path doesn't exists
     os_path_exists_mock.return_value = False
     try:
-      ambari_server.install_jce_manualy(args)
+      _ambari_server_.install_jce_manualy(args)
       self.fail("Should throw exception")
     except FatalException as fe:
       # Expected
@@ -1190,7 +1200,7 @@ class TestAmbariServer(TestCase):
     os_path_exists_mock.return_value = True
     os_path_isdir_mock.return_value = True
     try:
-      ambari_server.install_jce_manualy(args)
+      _ambari_server_.install_jce_manualy(args)
       self.fail("Should throw exception")
     except FatalException as fe:
       # Expected
@@ -1201,12 +1211,12 @@ class TestAmbariServer(TestCase):
     os_path_isdir_mock.return_value = False
     os_path_join_mock.return_value = \
       "/var/lib/ambari-server/resources/jce_policy-6.zip"
-    ambari_server.install_jce_manualy(args)
+    _ambari_server_.install_jce_manualy(args)
     self.assertTrue(shutil_copy_mock.called)
 
     shutil_copy_mock.side_effect = Exception("exception")
     try:
-      ambari_server.install_jce_manualy(args)
+      _ambari_server_.install_jce_manualy(args)
       self.fail("Should throw exception because of not found jce_policy-6.zip")
     except Exception:
     # Expected
@@ -1215,20 +1225,20 @@ class TestAmbariServer(TestCase):
 
     shutil_copy_mock.side_effect = None
     args.jce_policy = None
-    ambari_server.install_jce_manualy(args)
+    _ambari_server_.install_jce_manualy(args)
 
-  @patch.object(ambari_server, "get_validated_filepath_input")
-  @patch.object(ambari_server, "run_os_command")
-  @patch.object(ambari_server, "get_truststore_type")
+  @patch.object(_ambari_server_, "get_validated_filepath_input")
+  @patch.object(_ambari_server_, "run_os_command")
+  @patch.object(_ambari_server_, "get_truststore_type")
   @patch("__builtin__.open")
-  @patch.object(ambari_server, "find_properties_file")
-  @patch.object(ambari_server, "run_component_https_cmd")
-  @patch.object(ambari_server, "get_delete_cert_command")
-  @patch.object(ambari_server, "get_truststore_password")
-  @patch.object(ambari_server, "get_truststore_path")
-  @patch.object(ambari_server, "get_YN_input")
-  @patch.object(ambari_server, "get_ambari_properties")
-  @patch.object(ambari_server, "find_jdk")
+  @patch.object(_ambari_server_, "find_properties_file")
+  @patch.object(_ambari_server_, "run_component_https_cmd")
+  @patch.object(_ambari_server_, "get_delete_cert_command")
+  @patch.object(_ambari_server_, "get_truststore_password")
+  @patch.object(_ambari_server_, "get_truststore_path")
+  @patch.object(_ambari_server_, "get_YN_input")
+  @patch.object(_ambari_server_, "get_ambari_properties")
+  @patch.object(_ambari_server_, "find_jdk")
   def test_setup_component_https(self, find_jdk_mock, 
get_ambari_properties_mock, get_YN_input_mock,
                                  get_truststore_path_mock, 
get_truststore_password_mock,
                                  get_delete_cert_command_mock, 
run_component_https_cmd_mock,
@@ -1242,18 +1252,18 @@ class TestAmbariServer(TestCase):
     property = "use_ssl"
     alias = "alias"
     #Silent mode
-    ambari_server.SILENT = True
-    ambari_server.setup_component_https(component, command, property, alias)
+    set_silent(True)
+    _ambari_server_.setup_component_https(component, command, property, alias)
     self.assertEqual('command is not enabled in silent mode.\n', 
out.getvalue())
     sys.stdout = sys.__stdout__
     #Verbouse mode and jdk_path is None
-    ambari_server.SILENT = False
+    set_silent(False)
     p = get_ambari_properties_mock.return_value
     # Use ssl
     p.get_property.side_effect = ["true"]
     # Dont disable ssl
     get_YN_input_mock.side_effect = [False]
-    ambari_server.setup_component_https(component, command, property, alias)
+    _ambari_server_.setup_component_https(component, command, property, alias)
     self.assertTrue(p.get_property.called)
     self.assertTrue(get_YN_input_mock.called)
     p.get_property.reset_mock()
@@ -1262,7 +1272,7 @@ class TestAmbariServer(TestCase):
     p.get_property.side_effect = ["false"]
     # Dont enable ssl
     get_YN_input_mock.side_effect = [False]
-    ambari_server.setup_component_https(component, command, property, alias)
+    _ambari_server_.setup_component_https(component, command, property, alias)
     self.assertTrue(p.get_property.called)
     self.assertTrue(get_YN_input_mock.called)
     p.get_property.reset_mock()
@@ -1270,7 +1280,7 @@ class TestAmbariServer(TestCase):
     # Cant find jdk
     find_jdk_mock.return_value = None
     try:
-        ambari_server.setup_component_https(component, command, property, 
alias)
+        _ambari_server_.setup_component_https(component, command, property, 
alias)
         self.fail("Should throw exception")
     except FatalException as fe:
         # Expected
@@ -1284,7 +1294,7 @@ class TestAmbariServer(TestCase):
     get_truststore_path_mock.return_value = "/truststore_path"
     get_truststore_password_mock.return_value = "/truststore_password"
     get_delete_cert_command_mock.return_value = "rm -f"
-    ambari_server.setup_component_https(component, command, property, alias)
+    _ambari_server_.setup_component_https(component, command, property, alias)
 
     self.assertTrue(p.process_pair.called)
     self.assertTrue(get_truststore_path_mock.called)
@@ -1305,7 +1315,7 @@ class TestAmbariServer(TestCase):
     #Verbouse mode and jdk_path is not None (use_https = false) and import cert
     p.get_property.side_effect = ["false"]
     get_YN_input_mock.side_effect = [True]
-    ambari_server.setup_component_https(component, command, property, alias)
+    _ambari_server_.setup_component_https(component, command, property, alias)
 
     self.assertTrue(p.process_pair.called)
     self.assertTrue(get_truststore_type_mock.called)
@@ -1330,19 +1340,19 @@ class TestAmbariServer(TestCase):
     run_os_command_mock.reset_mock()
     get_validated_filepath_input_mock.reset_mock()
 
-  @patch.object(ambari_server, 'adjust_directory_permissions')
-  @patch.object(ambari_server, 'read_ambari_user')
-  @patch.object(ambari_server, "get_validated_string_input")
-  @patch.object(ambari_server, "find_properties_file")
-  @patch.object(ambari_server, "get_ambari_properties")
-  @patch.object(ambari_server, "is_server_runing")
-  @patch.object(ambari_server, "import_cert_and_key_action")
-  @patch.object(ambari_server, "get_YN_input")
+  @patch.object(_ambari_server_, 'adjust_directory_permissions')
+  @patch.object(_ambari_server_, 'read_ambari_user')
+  @patch.object(_ambari_server_, "get_validated_string_input")
+  @patch.object(_ambari_server_, "find_properties_file")
+  @patch.object(_ambari_server_, "get_ambari_properties")
+  @patch.object(_ambari_server_, "is_server_runing")
+  @patch.object(_ambari_server_, "import_cert_and_key_action")
+  @patch.object(_ambari_server_, "get_YN_input")
   @patch("__builtin__.open")
   @patch("ambari-server.Properties")
-  @patch.object(ambari_server, "is_root")
-  @patch.object(ambari_server, "is_valid_cert_host")
-  @patch.object(ambari_server, "is_valid_cert_exp")
+  @patch.object(_ambari_server_, "is_root")
+  @patch.object(_ambari_server_, "is_valid_cert_host")
+  @patch.object(_ambari_server_, "is_valid_cert_exp")
   def test_setup_https(self, is_valid_cert_exp_mock, is_valid_cert_host_mock, \
                        is_root_mock, Properties_mock, open_Mock, 
get_YN_input_mock, \
                        import_cert_and_key_action_mock,
@@ -1360,7 +1370,7 @@ class TestAmbariServer(TestCase):
     # Testing call under non-root
     is_root_mock.return_value = False
     try:
-      ambari_server.setup_https(args)
+      _ambari_server_.setup_https(args)
       self.fail("Should throw exception")
     except FatalException as fe:
       # Expected
@@ -1379,8 +1389,8 @@ class TestAmbariServer(TestCase):
                             " call('client.api.ssl.port'),\n" + \
                             " call('client.api.ssl.port'),\n call('api.ssl')]"
     process_pair_expected = "[call('client.api.ssl.port', '4444')]"
-    ambari_server.SILENT = False
-    ambari_server.setup_https(args)
+    set_silent(False)
+    _ambari_server_.setup_https(args)
 
     self.assertTrue(p.process_pair.called)
     self.assertTrue(p.get_property.call_count == 4)
@@ -1401,7 +1411,7 @@ class TestAmbariServer(TestCase):
     get_property_expected = "[call('security.server.keys_dir'),\n" + \
                             " call('client.api.ssl.port'),\n call('api.ssl')]"
     process_pair_expected = "[call('api.ssl', 'false')]"
-    ambari_server.setup_https(args)
+    _ambari_server_.setup_https(args)
 
     self.assertTrue(p.process_pair.called)
     self.assertTrue(p.get_property.call_count == 3)
@@ -1423,7 +1433,7 @@ class TestAmbariServer(TestCase):
     get_property_expected = "[call('security.server.keys_dir'),\n" + \
                             " call('client.api.ssl.port'),\n call('api.ssl')]"
     process_pair_expected = "[call('client.api.ssl.port', '4444')]"
-    ambari_server.setup_https(args)
+    _ambari_server_.setup_https(args)
 
     self.assertTrue(p.process_pair.called)
     self.assertTrue(p.get_property.call_count == 3)
@@ -1445,7 +1455,7 @@ class TestAmbariServer(TestCase):
     get_property_expected = "[call('security.server.keys_dir'),\n" + \
                             " call('client.api.ssl.port'),\n call('api.ssl')]"
     process_pair_expected = "[]"
-    ambari_server.setup_https(args)
+    _ambari_server_.setup_https(args)
 
     self.assertFalse(p.process_pair.called)
     self.assertTrue(p.get_property.call_count == 3)
@@ -1467,7 +1477,7 @@ class TestAmbariServer(TestCase):
     get_property_expected = "[call('security.server.keys_dir'),\n" + \
                             " call('client.api.ssl.port'),\n call('api.ssl')]"
     process_pair_expected = "[call('client.api.ssl.port', '4444')]"
-    self.assertFalse(ambari_server.setup_https(args))
+    self.assertFalse(_ambari_server_.setup_https(args))
     self.assertTrue(p.process_pair.called)
     self.assertTrue(p.get_property.call_count == 3)
     self.assertEqual(str(p.get_property.call_args_list), get_property_expected)
@@ -1481,9 +1491,9 @@ class TestAmbariServer(TestCase):
     import_cert_and_key_action_mock.reset_mock()
 
     #Case #6: if silent mode is enabled
-    ambari_server.SILENT = True
+    set_silent(True)
     try:
-      ambari_server.setup_https(args)
+      _ambari_server_.setup_https(args)
       self.fail("Should throw exception")
     except NonFatalException as fe:
       self.assertTrue("setup-https is not enabled in silent mode" in fe.reason)
@@ -1494,18 +1504,18 @@ class TestAmbariServer(TestCase):
     import_cert_and_key_action_mock.reset_mock()
 
     #Case #7: read property throw exception
-    ambari_server.SILENT = False
+    set_silent(False)
     find_properties_file_mock.return_value = "propertyFile"
     p.get_property.side_effect = KeyError("Failed to read property")
     try:
-        ambari_server.setup_https(args)
+        _ambari_server_.setup_https(args)
         self.fail("Should throw exception")
     except FatalException as fe:
         self.assertTrue("Failed to read property" in fe.reason)
 
 
 
-  @patch.object(ambari_server, "import_cert_and_key")
+  @patch.object(_ambari_server_, "import_cert_and_key")
   def test_import_cert_and_key_action(self, import_cert_and_key_mock):
     import_cert_and_key_mock.return_value = True
     properties = MagicMock()
@@ -1514,24 +1524,24 @@ class TestAmbariServer(TestCase):
     expect_process_pair = "[call('client.api.ssl.cert_name', 'https.crt'),\n" 
+ \
                           " call('client.api.ssl.key_name', 'https.key'),\n" + 
\
                           " call('api.ssl', 'true')]"
-    ambari_server.import_cert_and_key_action("key_dir", properties)
+    _ambari_server_.import_cert_and_key_action("key_dir", properties)
 
     self.assertEqual(str(properties.process_pair.call_args_list), \
                      expect_process_pair)
 
-  @patch.object(ambari_server, "remove_file")
-  @patch.object(ambari_server, "copy_file")
-  @patch.object(ambari_server, "read_ambari_user")
-  @patch.object(ambari_server, "set_file_permissions")
-  @patch.object(ambari_server, "import_file_to_keystore")
+  @patch.object(_ambari_server_, "remove_file")
+  @patch.object(_ambari_server_, "copy_file")
+  @patch.object(_ambari_server_, "read_ambari_user")
+  @patch.object(_ambari_server_, "set_file_permissions")
+  @patch.object(_ambari_server_, "import_file_to_keystore")
   @patch("__builtin__.open")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   @patch("os.path.join")
   @patch("os.path.isfile")
   @patch('__builtin__.raw_input')
-  @patch.object(ambari_server, "get_validated_string_input")
-  @patch.object(ambari_server, "is_valid_cert_host")
-  @patch.object(ambari_server, "is_valid_cert_exp")
+  @patch.object(_ambari_server_, "get_validated_string_input")
+  @patch.object(_ambari_server_, "is_valid_cert_host")
+  @patch.object(_ambari_server_, "is_valid_cert_exp")
   def test_import_cert_and_key(self, is_valid_cert_exp_mock, \
                                is_valid_cert_host_mock, \
                                get_validated_string_input_mock, \
@@ -1563,7 +1573,7 @@ class TestAmbariServer(TestCase):
                                      " call('key_file_path'," + \
                                      " 'keystore_cert_key_file_path')]"
 
-    ambari_server.import_cert_and_key("key_dir")
+    _ambari_server_.import_cert_and_key("key_dir")
     self.assertTrue(raw_input_mock.call_count == 2)
     self.assertTrue(get_validated_string_input_mock.called)
     self.assertEqual(os_path_join_mock.call_count, 8)
@@ -1571,19 +1581,19 @@ class TestAmbariServer(TestCase):
     self.assertEqual(str(import_file_to_keystore_mock.call_args_list), \
                      expect_import_file_to_keystore)
 
-  @patch.object(ambari_server, "remove_file")
-  @patch.object(ambari_server, "copy_file")
-  @patch.object(ambari_server, "generate_random_string")
-  @patch.object(ambari_server, "read_ambari_user")
-  @patch.object(ambari_server, "set_file_permissions")
-  @patch.object(ambari_server, "import_file_to_keystore")
+  @patch.object(_ambari_server_, "remove_file")
+  @patch.object(_ambari_server_, "copy_file")
+  @patch.object(_ambari_server_, "generate_random_string")
+  @patch.object(_ambari_server_, "read_ambari_user")
+  @patch.object(_ambari_server_, "set_file_permissions")
+  @patch.object(_ambari_server_, "import_file_to_keystore")
   @patch("__builtin__.open")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   @patch("os.path.join")
-  @patch.object(ambari_server, "get_validated_filepath_input")
-  @patch.object(ambari_server, "get_validated_string_input")
-  @patch.object(ambari_server, "is_valid_cert_host")
-  @patch.object(ambari_server, "is_valid_cert_exp")
+  @patch.object(_ambari_server_, "get_validated_filepath_input")
+  @patch.object(_ambari_server_, "get_validated_string_input")
+  @patch.object(_ambari_server_, "is_valid_cert_host")
+  @patch.object(_ambari_server_, "is_valid_cert_exp")
   def test_import_cert_and_key_with_empty_password(self, \
                                                    is_valid_cert_exp_mock, 
is_valid_cert_host_mock,
                                                    
get_validated_string_input_mock, get_validated_filepath_input_mock, \
@@ -1613,7 +1623,7 @@ class TestAmbariServer(TestCase):
                                      " call('key_file_path.secured'," + \
                                      " 'keystore_cert_key_file_path')]"
 
-    ambari_server.import_cert_and_key("key_dir")
+    _ambari_server_.import_cert_and_key("key_dir")
     self.assertEquals(get_validated_filepath_input_mock.call_count, 2)
     self.assertTrue(get_validated_string_input_mock.called)
     self.assertEquals(os_path_join_mock.call_count, 8)
@@ -1623,15 +1633,15 @@ class TestAmbariServer(TestCase):
     self.assertTrue(generate_random_string_mock.called)
 
   @patch("__builtin__.open")
-  @patch.object(ambari_server, "copy_file")
-  @patch.object(ambari_server, "is_root")
-  @patch.object(ambari_server, "read_ambari_user")
-  @patch.object(ambari_server, "set_file_permissions")
-  @patch.object(ambari_server, "import_file_to_keystore")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "copy_file")
+  @patch.object(_ambari_server_, "is_root")
+  @patch.object(_ambari_server_, "read_ambari_user")
+  @patch.object(_ambari_server_, "set_file_permissions")
+  @patch.object(_ambari_server_, "import_file_to_keystore")
+  @patch.object(_ambari_server_, "run_os_command")
   @patch("os.path.join")
-  @patch.object(ambari_server, "get_validated_filepath_input")
-  @patch.object(ambari_server, "get_validated_string_input")
+  @patch.object(_ambari_server_, "get_validated_filepath_input")
+  @patch.object(_ambari_server_, "get_validated_string_input")
   def test_import_cert_and_key_with_incorrect_password(self,
                                                        
get_validated_string_input_mock, \
                                                        
get_validated_filepath_input_mock, \
@@ -1654,110 +1664,110 @@ class TestAmbariServer(TestCase):
     #provided password doesn't match, openssl command returns an error
     run_os_command_mock.return_value = (1, "", "Some error message")
 
-    self.assertFalse(ambari_server.import_cert_and_key_action(*["key_dir", 
None]))
-    self.assertFalse(ambari_server.import_cert_and_key("key_dir"))
+    self.assertFalse(_ambari_server_.import_cert_and_key_action(*["key_dir", 
None]))
+    self.assertFalse(_ambari_server_.import_cert_and_key("key_dir"))
 
   def test_is_valid_cert_exp(self):
 
     #No data in certInfo
     certInfo = {}
-    is_valid = ambari_server.is_valid_cert_exp(certInfo)
+    is_valid = _ambari_server_.is_valid_cert_exp(certInfo)
     self.assertFalse(is_valid)
 
     #Issued in future
-    issuedOn = (datetime.datetime.now() + 
datetime.timedelta(hours=1000)).strftime(ambari_server.SSL_DATE_FORMAT)
-    expiresOn = (datetime.datetime.now() + 
datetime.timedelta(hours=2000)).strftime(ambari_server.SSL_DATE_FORMAT)
-    certInfo = {ambari_server.NOT_BEFORE_ATTR: issuedOn,
-                ambari_server.NOT_AFTER_ATTR: expiresOn}
-    is_valid = ambari_server.is_valid_cert_exp(certInfo)
+    issuedOn = (datetime.datetime.now() + 
datetime.timedelta(hours=1000)).strftime(_ambari_server_.SSL_DATE_FORMAT)
+    expiresOn = (datetime.datetime.now() + 
datetime.timedelta(hours=2000)).strftime(_ambari_server_.SSL_DATE_FORMAT)
+    certInfo = {_ambari_server_.NOT_BEFORE_ATTR: issuedOn,
+                _ambari_server_.NOT_AFTER_ATTR: expiresOn}
+    is_valid = _ambari_server_.is_valid_cert_exp(certInfo)
     self.assertFalse(is_valid)
 
     #Was expired
-    issuedOn = (datetime.datetime.now() - 
datetime.timedelta(hours=2000)).strftime(ambari_server.SSL_DATE_FORMAT)
-    expiresOn = (datetime.datetime.now() - 
datetime.timedelta(hours=1000)).strftime(ambari_server.SSL_DATE_FORMAT)
-    certInfo = {ambari_server.NOT_BEFORE_ATTR: issuedOn,
-                ambari_server.NOT_AFTER_ATTR: expiresOn}
-    is_valid = ambari_server.is_valid_cert_exp(certInfo)
+    issuedOn = (datetime.datetime.now() - 
datetime.timedelta(hours=2000)).strftime(_ambari_server_.SSL_DATE_FORMAT)
+    expiresOn = (datetime.datetime.now() - 
datetime.timedelta(hours=1000)).strftime(_ambari_server_.SSL_DATE_FORMAT)
+    certInfo = {_ambari_server_.NOT_BEFORE_ATTR: issuedOn,
+                _ambari_server_.NOT_AFTER_ATTR: expiresOn}
+    is_valid = _ambari_server_.is_valid_cert_exp(certInfo)
     self.assertFalse(is_valid)
 
     #Valid
-    issuedOn = (datetime.datetime.now() - 
datetime.timedelta(hours=2000)).strftime(ambari_server.SSL_DATE_FORMAT)
-    expiresOn = (datetime.datetime.now() + 
datetime.timedelta(hours=1000)).strftime(ambari_server.SSL_DATE_FORMAT)
-    certInfo = {ambari_server.NOT_BEFORE_ATTR: issuedOn,
-                ambari_server.NOT_AFTER_ATTR: expiresOn}
-    is_valid = ambari_server.is_valid_cert_exp(certInfo)
+    issuedOn = (datetime.datetime.now() - 
datetime.timedelta(hours=2000)).strftime(_ambari_server_.SSL_DATE_FORMAT)
+    expiresOn = (datetime.datetime.now() + 
datetime.timedelta(hours=1000)).strftime(_ambari_server_.SSL_DATE_FORMAT)
+    certInfo = {_ambari_server_.NOT_BEFORE_ATTR: issuedOn,
+                _ambari_server_.NOT_AFTER_ATTR: expiresOn}
+    is_valid = _ambari_server_.is_valid_cert_exp(certInfo)
     self.assertTrue(is_valid)
 
-  @patch.object(ambari_server, "get_fqdn")
+  @patch.object(_ambari_server_, "get_fqdn")
   def test_is_valid_cert_host(self, get_fqdn_mock):
 
     #No data in certInfo
     certInfo = {}
-    is_valid = ambari_server.is_valid_cert_host(certInfo)
+    is_valid = _ambari_server_.is_valid_cert_host(certInfo)
     self.assertFalse(is_valid)
 
     #Failed to get FQDN
     get_fqdn_mock.return_value = None
-    is_valid = ambari_server.is_valid_cert_host(certInfo)
+    is_valid = _ambari_server_.is_valid_cert_host(certInfo)
     self.assertFalse(is_valid)
 
     #FQDN and Common name in certificated don't correspond
     get_fqdn_mock.return_value = 'host1'
-    certInfo = {ambari_server.COMMON_NAME_ATTR: 'host2'}
-    is_valid = ambari_server.is_valid_cert_host(certInfo)
+    certInfo = {_ambari_server_.COMMON_NAME_ATTR: 'host2'}
+    is_valid = _ambari_server_.is_valid_cert_host(certInfo)
     self.assertFalse(is_valid)
 
     #FQDN and Common name in certificated correspond
     get_fqdn_mock.return_value = 'host1'
-    certInfo = {ambari_server.COMMON_NAME_ATTR: 'host1'}
-    is_valid = ambari_server.is_valid_cert_host(certInfo)
+    certInfo = {_ambari_server_.COMMON_NAME_ATTR: 'host1'}
+    is_valid = _ambari_server_.is_valid_cert_host(certInfo)
     self.assertTrue(is_valid)
 
 
-  @patch.object(ambari_server, "get_ambari_properties")
+  @patch.object(_ambari_server_, "get_ambari_properties")
   def test_is_valid_https_port(self, get_ambari_properties_mock):
 
     #No ambari.properties
     get_ambari_properties_mock.return_value = -1
-    is_valid = ambari_server.is_valid_https_port(1111)
+    is_valid = _ambari_server_.is_valid_https_port(1111)
     self.assertEqual(is_valid, False)
 
     #User entered port used by one way auth
     portOneWay = "1111"
     portTwoWay = "2222"
     validPort = "3333"
-    get_ambari_properties_mock.return_value = 
{ambari_server.SRVR_ONE_WAY_SSL_PORT_PROPERTY: portOneWay,
-                                               
ambari_server.SRVR_TWO_WAY_SSL_PORT_PROPERTY: portTwoWay}
-    is_valid = ambari_server.is_valid_https_port(portOneWay)
+    get_ambari_properties_mock.return_value = 
{_ambari_server_.SRVR_ONE_WAY_SSL_PORT_PROPERTY: portOneWay,
+                                               
_ambari_server_.SRVR_TWO_WAY_SSL_PORT_PROPERTY: portTwoWay}
+    is_valid = _ambari_server_.is_valid_https_port(portOneWay)
     self.assertEqual(is_valid, False)
 
     #User entered port used by two way auth
-    is_valid = ambari_server.is_valid_https_port(portTwoWay)
+    is_valid = _ambari_server_.is_valid_https_port(portTwoWay)
     self.assertEqual(is_valid, False)
 
     #User entered valid port
-    get_ambari_properties_mock.return_value = 
{ambari_server.SRVR_ONE_WAY_SSL_PORT_PROPERTY: portOneWay,
-                                               
ambari_server.SRVR_TWO_WAY_SSL_PORT_PROPERTY: portTwoWay}
-    is_valid = ambari_server.is_valid_https_port(validPort)
+    get_ambari_properties_mock.return_value = 
{_ambari_server_.SRVR_ONE_WAY_SSL_PORT_PROPERTY: portOneWay,
+                                               
_ambari_server_.SRVR_TWO_WAY_SSL_PORT_PROPERTY: portTwoWay}
+    is_valid = _ambari_server_.is_valid_https_port(validPort)
     self.assertEqual(is_valid, True)
 
   @patch("socket.getfqdn")
   @patch("urllib2.urlopen")
-  @patch.object(ambari_server, "get_ambari_properties")
+  @patch.object(_ambari_server_, "get_ambari_properties")
   def test_get_fqdn(self, get_ambari_properties_mock, url_open_mock, 
getfqdn_mock):
 
     #No ambari.properties
     get_ambari_properties_mock.return_value = -1
-    fqdn = ambari_server.get_fqdn()
+    fqdn = _ambari_server_.get_fqdn()
     self.assertEqual(fqdn, None)
 
     #Check mbari_server.GET_FQDN_SERVICE_URL property name (AMBARI-2612)
     #property name should be server.fqdn.service.url
-    self.assertEqual(ambari_server.GET_FQDN_SERVICE_URL, 
"server.fqdn.service.url")
+    self.assertEqual(_ambari_server_.GET_FQDN_SERVICE_URL, 
"server.fqdn.service.url")
 
     #Read FQDN from service
     p = MagicMock()
-    p[ambari_server.GET_FQDN_SERVICE_URL] = 'someurl'
+    p[_ambari_server_.GET_FQDN_SERVICE_URL] = 'someurl'
     get_ambari_properties_mock.return_value = p
 
     u = MagicMock()
@@ -1765,57 +1775,57 @@ class TestAmbariServer(TestCase):
     u.read.return_value = host
     url_open_mock.return_value = u
 
-    fqdn = ambari_server.get_fqdn()
+    fqdn = _ambari_server_.get_fqdn()
     self.assertEqual(fqdn, host)
 
     #Failed to read FQDN from service, getting from socket
     u.reset_mock()
     u.side_effect = Exception("Failed to read FQDN from service")
     getfqdn_mock.return_value = host
-    fqdn = ambari_server.get_fqdn()
+    fqdn = _ambari_server_.get_fqdn()
     self.assertEqual(fqdn, host)
 
 
-  @patch.object(ambari_server, "find_properties_file")
+  @patch.object(_ambari_server_, "find_properties_file")
   def test_get_ulimit_open_files(self, find_properties_file_mock):
 
     # 1 - No ambari.properties
     find_properties_file_mock.return_value = None
-    open_files = ambari_server.get_fqdn()
+    open_files = _ambari_server_.get_fqdn()
     self.assertEqual(open_files, None)
 
     # 2 - With ambari.properties - ok
     tf1 = tempfile.NamedTemporaryFile()
     prop_value = 65000
     with open(tf1.name, 'w') as fout:
-      fout.write(ambari_server.ULIMIT_OPEN_FILES_KEY + '=' + str(prop_value))
+      fout.write(_ambari_server_.ULIMIT_OPEN_FILES_KEY + '=' + str(prop_value))
     fout.close()
     find_properties_file_mock.return_value = tf1.name
-    open_files = ambari_server.get_ulimit_open_files()
+    open_files = _ambari_server_.get_ulimit_open_files()
     self.assertEqual(open_files, 65000)
 
     # 2 - With ambari.properties - default
     tf1 = tempfile.NamedTemporaryFile()
     prop_value = 0
     with open(tf1.name, 'w') as fout:
-      fout.write(ambari_server.ULIMIT_OPEN_FILES_KEY + '=' + str(prop_value))
+      fout.write(_ambari_server_.ULIMIT_OPEN_FILES_KEY + '=' + str(prop_value))
     fout.close()
     find_properties_file_mock.return_value = tf1.name
-    open_files = ambari_server.get_ulimit_open_files()
-    self.assertEqual(open_files, ambari_server.ULIMIT_OPEN_FILES_DEFAULT)
+    open_files = _ambari_server_.get_ulimit_open_files()
+    self.assertEqual(open_files, _ambari_server_.ULIMIT_OPEN_FILES_DEFAULT)
 
 
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_get_cert_info(self, run_os_command_mock):
     # Error running openssl command
     path = 'path/to/certificate'
     run_os_command_mock.return_value = -1, None, None
-    cert_info = ambari_server.get_cert_info(path)
+    cert_info = _ambari_server_.get_cert_info(path)
     self.assertEqual(cert_info, None)
 
     #Empty result of openssl command
     run_os_command_mock.return_value = 0, None, None
-    cert_info = ambari_server.get_cert_info(path)
+    cert_info = _ambari_server_.get_cert_info(path)
     self.assertEqual(cert_info, None)
 
     #Positive scenario
@@ -1843,7 +1853,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     """
     out = out_pattern.format(notAfter=notAfter, notBefore=notBefore, 
subject=subject)
     run_os_command_mock.return_value = 0, out, None
-    cert_info = ambari_server.get_cert_info(path)
+    cert_info = _ambari_server_.get_cert_info(path)
     self.assertEqual(cert_info['notAfter'], notAfter)
     self.assertEqual(cert_info['notBefore'], notBefore)
     self.assertEqual(cert_info['subject'], subject)
@@ -1862,19 +1872,19 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     inputed_value1 = 'val1'
     inputed_value2 = 'val2'
     raw_input_mock.return_value = inputed_value1
-    input = ambari_server.get_validated_string_input(prompt, default_value, 
None,
+    input = _ambari_server_.get_validated_string_input(prompt, default_value, 
None,
                                                      description, False, 
False, validator)
     self.assertTrue(validator.called)
     self.assertEqual(inputed_value1, input)
 
     validator.side_effect = [False, True]
     raw_input_mock.side_effect = [inputed_value1, inputed_value2]
-    input = ambari_server.get_validated_string_input(prompt, default_value, 
None,
+    input = _ambari_server_.get_validated_string_input(prompt, default_value, 
None,
                                                      description, False, 
False, validator)
     self.assertEqual(inputed_value2, input)
 
 
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   @patch("__builtin__.open")
   @patch("os.path.exists")
   def test_is_server_runing(self, os_path_exists_mock, open_mock, \
@@ -1883,15 +1893,15 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     f = open_mock.return_value
     f.readline.return_value = "111"
     run_os_command_mock.return_value = 0, "", ""
-    status, pid = ambari_server.is_server_runing()
+    status, pid = _ambari_server_.is_server_runing()
     self.assertTrue(status)
     self.assertEqual(111, pid)
     os_path_exists_mock.return_value = False
-    status, pid = ambari_server.is_server_runing()
+    status, pid = _ambari_server_.is_server_runing()
     self.assertFalse(status)
 
 
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   @patch("__builtin__.open")
   @patch("os.path.exists")
   def test_is_server_runing_bad_file(self, os_path_exists_mock, open_mock, \
@@ -1900,19 +1910,19 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     f = open_mock.return_value
     f.readline.return_value = "" # empty file content
     run_os_command_mock.return_value = 0, "", ""
-    self.assertRaises(NonFatalException, ambari_server.is_server_runing)
+    self.assertRaises(NonFatalException, _ambari_server_.is_server_runing)
 
     open_mock.side_effect = IOError('[Errno 13] Permission denied: 
/var/run/ambari-server/ambari-server.pid')
-    self.assertRaises(FatalException, ambari_server.is_server_runing)
+    self.assertRaises(FatalException, _ambari_server_.is_server_runing)
 
 
   @patch("os.chdir")
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_install_jdk(self, run_os_command_mock, os_chdir_mock):
     run_os_command_mock.return_value = 1, "", ""
     failed = False
     try:
-      ambari_server.install_jdk(MagicMock())
+      _ambari_server_.install_jdk(MagicMock())
       self.fail("Exception was not rised!")
     except FatalException:
       failed = True
@@ -1922,15 +1932,15 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
   @patch("os.stat")
   @patch("os.path.isfile")
   @patch("os.path.exists")
-  @patch.object(ambari_server, "track_jdk")
-  @patch.object(ambari_server, "get_YN_input")
-  @patch.object(ambari_server, "run_os_command")
-  @patch.object(ambari_server, "write_property")
-  @patch.object(ambari_server, "remove_property")
-  @patch.object(ambari_server, "get_validated_string_input")
-  @patch.object(ambari_server, "print_info_msg")
-  @patch.object(ambari_server, "get_JAVA_HOME")
-  @patch.object(ambari_server, "get_ambari_properties")
+  @patch.object(_ambari_server_, "track_jdk")
+  @patch.object(_ambari_server_, "get_YN_input")
+  @patch.object(_ambari_server_, "run_os_command")
+  @patch.object(_ambari_server_, "write_property")
+  @patch.object(_ambari_server_, "remove_property")
+  @patch.object(_ambari_server_, "get_validated_string_input")
+  @patch.object(_ambari_server_, "print_info_msg")
+  @patch.object(_ambari_server_, "get_JAVA_HOME")
+  @patch.object(_ambari_server_, "get_ambari_properties")
   @patch("shutil.copyfile")
   @patch("sys.exit")
   def test_download_jdk(self, exit_mock, copyfile_mock, 
get_ambari_properties_mock, get_JAVA_HOME_mock, \
@@ -1944,7 +1954,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_ambari_properties_mock.return_value = -1
     # Test case: ambari.properties not found
     try:
-      ambari_server.download_jdk(args)
+      _ambari_server_.download_jdk(args)
       self.fail("Should throw exception because of not found 
ambari.properties")
     except FatalException:
       # Expected
@@ -1959,13 +1969,13 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_JAVA_HOME_mock.return_value = True
     get_YN_input_mock.return_value = False
     path_existsMock.side_effect = [False,False]
-    rcode = ambari_server.download_jdk(args)
+    rcode = _ambari_server_.download_jdk(args)
     self.assertEqual(0, rcode)
     # Test case: java home setup
     args.java_home = "somewhere"
     path_existsMock.side_effect = [True,False,False]
     get_JAVA_HOME_mock.return_value = False
-    rcode = ambari_server.download_jdk(args)
+    rcode = _ambari_server_.download_jdk(args)
     self.assertEqual(0, rcode)
     self.assertTrue(write_property_mock.called)
     self.assertTrue(remove_property_mock.call_count == 2)
@@ -1976,7 +1986,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_ambari_properties_mock.return_value = p
     p.__getitem__.side_effect = KeyError("test exception")
     try:
-      ambari_server.download_jdk(args)
+      _ambari_server_.download_jdk(args)
       self.fail("Should throw exception")
     except FatalException:
       # Expected
@@ -1990,7 +2000,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_validated_string_input_mock.return_value = "1"
     run_os_command_mock.return_value = (0, "Wrong out", None)
     try:
-      ambari_server.download_jdk(args)
+      _ambari_server_.download_jdk(args)
       self.fail("Should throw exception")
     except FatalException:
       # Expected
@@ -1999,21 +2009,21 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     args.java_home = None
     path_isfileMock.return_value = False
     args.jdk_location = None
-    ambari_server.JDK_INSTALL_DIR = os.getcwd()
+    _ambari_server_.JDK_INSTALL_DIR = os.getcwd()
     run_os_command_mock.return_value = (0, "Creating jdk-1.2/jre"
                                            "Content-Length: 32000\r\n"
                                         , None)
     statResult = MagicMock()
     statResult.st_size = 32000
     statMock.return_value = statResult
-    rcode = ambari_server.download_jdk(args)
+    rcode = _ambari_server_.download_jdk(args)
     self.assertEqual(0, rcode)
 
     # Test case: not accept the license"
     p.__getitem__.return_value = "somewhere"
     p.__getitem__.side_effect = None
     get_YN_input_mock.return_value = False
-    ambari_server.download_jdk(args)
+    _ambari_server_.download_jdk(args)
     self.assertTrue(exit_mock.called)
 
     # Test case: jdk is already installed, ensure that JCE check is skipped if 
-j option is not supplied.
@@ -2024,8 +2034,8 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_JAVA_HOME_mock.return_value = True
     get_YN_input_mock.return_value = False
     path_existsMock.return_value = False
-    with patch.object(ambari_server, "download_jce_policy") as 
download_jce_policy_mock:
-      rcode = ambari_server.download_jdk(args)
+    with patch.object(_ambari_server_, "download_jce_policy") as 
download_jce_policy_mock:
+      rcode = _ambari_server_.download_jdk(args)
       self.assertFalse(download_jce_policy_mock.called)
 
     # Test case: Update JAVA_HOME location using command: ambari-server setup 
-j %NEW_LOCATION%
@@ -2035,7 +2045,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     path_existsMock.side_effect = [True,False,False]
     get_JAVA_HOME_mock.return_value = True
     path_isfileMock.return_value = True
-    ambari_server.download_jdk(args)
+    _ambari_server_.download_jdk(args)
     self.assertTrue(write_property_mock.call_count == 1)
     self.assertTrue(remove_property_mock.call_count == 2)
 
@@ -2047,7 +2057,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     #path_existsMock.return_value = True
     #get_JAVA_HOME_mock.return_value = True
     #try:
-    #  ambari_server.download_jdk(args)
+    #  _ambari_server_.download_jdk(args)
     #  self.fail("Should throw exception")
     #except FatalException as fe:
       # Expected
@@ -2061,7 +2071,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     path_existsMock.return_value = True
     get_validated_string_input_mock.return_value = "3"
     get_JAVA_HOME_mock.return_value = False
-    rcode = ambari_server.download_jdk(args)
+    rcode = _ambari_server_.download_jdk(args)
     self.assertEqual(0, rcode)
     self.assertTrue(write_property_mock.called)
     self.assertTrue(remove_property_mock.call_count == 2)
@@ -2072,7 +2082,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_validated_string_input_mock.return_value = "3"
     get_JAVA_HOME_mock.return_value = False
     try:
-      ambari_server.download_jdk(args)
+      _ambari_server_.download_jdk(args)
       self.fail("Should throw exception")
     except FatalException as fe:
       # Expected
@@ -2087,7 +2097,7 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     get_JAVA_HOME_mock.return_value = False
     flag = False
     try:
-      ambari_server.download_jdk(args)
+      _ambari_server_.download_jdk(args)
       self.fail("Should throw exception")
     except FatalException as fe:
       # Expected
@@ -2098,29 +2108,29 @@ 
MIIFHjCCAwYCCQDpHKOBI+Lt0zANBgkqhkiG9w0BAQUFADBRMQswCQYDVQQGEwJV
     args.java_home = "somewhere"
     path_existsMock.return_value = False
     try:
-      ambari_server.download_jdk(args)
+      _ambari_server_.download_jdk(args)
       self.fail("Should throw exception")
     except FatalException as fe:
       self.assertTrue("Path to java home somewhere or java binary file does 
not exists" in fe.reason)
       pass
 
 
-  @patch.object(ambari_server, "run_os_command")
+  @patch.object(_ambari_server_, "run_os_command")
   def test_get_postgre_status(self, run_os_command_mock):
 
     run_os_command_mock.return_value = (1, "running", None)
-    pg_status, retcode, out, err = ambari_server.get_postgre_status()
+    pg_status, retcode, out, err = _ambari_server_.get_postgre_status()
     self.assertEqual("running", pg_status)
 
     run_os_command_mock.return_value = (1, "wrong", None)
-    pg_status, retcode, out, err = ambari_server.get_postgre

<TRUNCATED>

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