standardize ssh auth

we need to be following defautl paramiko rules,
first use pkey, then key_filenames (autodetecting ~/.ssh/ keys),
then password

We have too much boilerplate redudant code everywhere, we need
to standardize on a factory function that takes a node dict.

Using Python3 ChainMap we can layer overrides and defaults.

VNF descriptors have to default key_filename, password to Python None.
The only way to do this is to omit key values if the variable is not
defined, this way the dict will not have the value and it will
default to Python None

Add python2 chainmap backport

Updated unittest mocking to use ssh.SSH.from_node

Change-Id: I80b0cb606e593b33e317c9e5e8ed0b74da591514
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>
(cherry picked from commit 99abbb424007da2e01762f3c040a39c0157cbe1f)

1 files changed, 26 insertions, 26 deletions

diff --git a/tests/unit/benchmark/scenarios/networking/test_iperf3.py b/tests/unit/benchmark/scenarios/networking/test_iperf3.py
index ea53cb9ab..45ff1b779 100644
--- a/tests/unit/benchmark/scenarios/networking/test_iperf3.py
+++ b/tests/unit/benchmark/scenarios/networking/test_iperf3.py
@@ -45,29 +45,29 @@ class IperfTestCase(unittest.TestCase):
     def test_iperf_successful_setup(self, mock_ssh):
 
         p = iperf3.Iperf({}, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
 
         p.setup()
         self.assertIsNotNone(p.target)
         self.assertIsNotNone(p.host)
-        mock_ssh.SSH().execute.assert_called_with("iperf3 -s -D")
+        mock_ssh.SSH.from_node().execute.assert_called_with("iperf3 -s -D")
 
     def test_iperf_unsuccessful_setup(self, mock_ssh):
 
         p = iperf3.Iperf({}, self.ctx)
-        mock_ssh.SSH().execute.return_value = (1, '', 'FOOBAR')
+        mock_ssh.SSH.from_node().execute.return_value = (1, '', 'FOOBAR')
         self.assertRaises(RuntimeError, p.setup)
 
     def test_iperf_successful_teardown(self, mock_ssh):
 
         p = iperf3.Iperf({}, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
-        p.target = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
+        p.target = mock_ssh.SSH.from_node()
 
         p.teardown()
-        self.assertTrue(mock_ssh.SSH().close.called)
-        mock_ssh.SSH().execute.assert_called_with("pkill iperf3")
+        self.assertTrue(mock_ssh.SSH.from_node().close.called)
+        mock_ssh.SSH.from_node().execute.assert_called_with("pkill iperf3")
 
     def test_iperf_successful_no_sla(self, mock_ssh):
 
@@ -76,11 +76,11 @@ class IperfTestCase(unittest.TestCase):
         result = {}
 
         p = iperf3.Iperf(args, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
 
         sample_output = self._read_sample_output(self.output_name_tcp)
-        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+        mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
         expected_result = jsonutils.loads(sample_output)
         p.run(result)
         self.assertEqual(result, expected_result)
@@ -95,11 +95,11 @@ class IperfTestCase(unittest.TestCase):
         result = {}
 
         p = iperf3.Iperf(args, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
 
         sample_output = self._read_sample_output(self.output_name_tcp)
-        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+        mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
         expected_result = jsonutils.loads(sample_output)
         p.run(result)
         self.assertEqual(result, expected_result)
@@ -114,11 +114,11 @@ class IperfTestCase(unittest.TestCase):
         result = {}
 
         p = iperf3.Iperf(args, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
 
         sample_output = self._read_sample_output(self.output_name_tcp)
-        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+        mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
         self.assertRaises(AssertionError, p.run, result)
 
     def test_iperf_successful_sla_jitter(self, mock_ssh):
@@ -130,11 +130,11 @@ class IperfTestCase(unittest.TestCase):
         result = {}
 
         p = iperf3.Iperf(args, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
 
         sample_output = self._read_sample_output(self.output_name_udp)
-        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+        mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
         expected_result = jsonutils.loads(sample_output)
         p.run(result)
         self.assertEqual(result, expected_result)
@@ -148,11 +148,11 @@ class IperfTestCase(unittest.TestCase):
         result = {}
 
         p = iperf3.Iperf(args, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
 
         sample_output = self._read_sample_output(self.output_name_udp)
-        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+        mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
         self.assertRaises(AssertionError, p.run, result)
 
     def test_iperf_unsuccessful_script_error(self, mock_ssh):
@@ -162,10 +162,10 @@ class IperfTestCase(unittest.TestCase):
         result = {}
 
         p = iperf3.Iperf(args, self.ctx)
-        mock_ssh.SSH().execute.return_value = (0, '', '')
-        p.host = mock_ssh.SSH()
+        mock_ssh.SSH.from_node().execute.return_value = (0, '', '')
+        p.host = mock_ssh.SSH.from_node()
 
-        mock_ssh.SSH().execute.return_value = (1, '', 'FOOBAR')
+        mock_ssh.SSH.from_node().execute.return_value = (1, '', 'FOOBAR')
         self.assertRaises(RuntimeError, p.run, result)
 
     def _read_sample_output(self, filename):