Introduce simple VAT history per test case

- print list of VAT commands executed per DUT node during the test
  case in the func test teardown

Change-Id: I18a750ebfb7560eff9f5c4f0826ef84c3f64b4a8
Signed-off-by: Jan Gelety <jgelety@cisco.com>

2 files changed, 98 insertions, 2 deletions

diff --git a/resources/libraries/python/VatExecutor.py b/resources/libraries/python/VatExecutor.py
index bbce83d1ad..5f7e188b7f 100644
--- a/resources/libraries/python/VatExecutor.py
+++ b/resources/libraries/python/VatExecutor.py
@@ -19,6 +19,7 @@ from robot.api import logger
 
 from resources.libraries.python.ssh import SSH
 from resources.libraries.python.constants import Constants
+from resources.libraries.python.VatHistory import VatHistory
 
 
 __all__ = ['VatExecutor']
@@ -162,8 +163,9 @@ class VatTerminal(object):
     def __init__(self, node, json_param=True):
         json_text = ' json' if json_param else ''
         self.json = json_param
+        self._node = node
         self._ssh = SSH()
-        self._ssh.connect(node)
+        self._ssh.connect(self._node)
         self._tty = self._ssh.interactive_terminal_open()
         self._ssh.interactive_terminal_exec_command(
             self._tty,
@@ -185,6 +187,7 @@ class VatTerminal(object):
         :return: Command output in python representation of JSON format or
         None if not in JSON mode.
         """
+        VatHistory.add_to_vat_history(self._node, cmd)
         logger.debug("Executing command in VAT terminal: {}".format(cmd))
         try:
             out = self._ssh.interactive_terminal_exec_command(self._tty, cmd,
@@ -217,7 +220,7 @@ class VatTerminal(object):
 
     def vat_terminal_close(self):
         """Close VAT terminal."""
-        #interactive terminal is dead, we only need to close session
+        # interactive terminal is dead, we only need to close session
         if not self._exec_failure:
             self._ssh.interactive_terminal_exec_command(self._tty,
                                                         'quit',
diff --git a/resources/libraries/python/VatHistory.py b/resources/libraries/python/VatHistory.py
new file mode 100644
index 0000000000..caa3de50f2
--- /dev/null
+++ b/resources/libraries/python/VatHistory.py
@@ -0,0 +1,93 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+
+"""DUT VAT command history setup library."""
+
+from robot.api import logger
+
+from resources.libraries.python.topology import NodeType, DICT__nodes
+
+__all__ = ["DICT__duts_vat_history", "VatHistory"]
+
+
+def setup_vat_history(nodes):
+    duts_vat_history = {}
+    for node in nodes.values():
+        if node['type'] == NodeType.DUT:
+            duts_vat_history[node['host']] = []
+    return duts_vat_history
+
+DICT__duts_vat_history = setup_vat_history(DICT__nodes)
+
+
+class VatHistory(object):
+    """Contains methods to set up DUT VAT command history."""
+
+    @staticmethod
+    def reset_vat_history(node):
+        """Reset VAT command history for DUT node.
+
+        :param node: DUT node to reset VAT command history for.
+        :type node: dict
+        """
+        if node['type'] == NodeType.DUT:
+            DICT__duts_vat_history[node['host']] = []
+
+    @staticmethod
+    def reset_vat_history_on_all_duts(nodes):
+        """Reset VAT command history for all DUT nodes.
+
+        :param nodes: Nodes to reset VAT command history for.
+        :type nodes: dict
+        """
+        for node in nodes.values():
+            if node['type'] == NodeType.DUT:
+                VatHistory.reset_vat_history(node)
+
+    @staticmethod
+    def show_vat_history(node):
+        """Show VAT command history for DUT node.
+
+        :param node: DUT node to show VAT command history for.
+        :type node: dict
+        """
+        if node['type'] == NodeType.DUT:
+            sequence = "\nno VAT command executed"\
+                if len(DICT__duts_vat_history[node['host']]) == 0\
+                else "".join("\n{}".format(cmd)
+                             for cmd in DICT__duts_vat_history[node['host']])
+            logger.trace("{0} VAT command history:{1}\n".
+                         format(node['host'], sequence))
+
+    @staticmethod
+    def show_vat_history_on_all_duts(nodes):
+        """Show VAT command history for all DUT nodes.
+
+        :param nodes: Nodes to show VAT command history for.
+        :type nodes: dict
+        """
+        for node in nodes.values():
+            if node['type'] == NodeType.DUT:
+                VatHistory.show_vat_history(node)
+
+    @staticmethod
+    def add_to_vat_history(node, cmd):
+        """Add command to VAT command history on DUT node.
+
+        :param node: DUT node to add command to VAT command history for.
+        :param cmd: Command to be added to VAT command history.
+        :type node: dict
+        :type cmd: str
+        """
+        if node['type'] == NodeType.DUT:
+            DICT__duts_vat_history[node['host']].append(cmd)