Support NodeContext type

Initial NodeContext implementation to support BareMetal,
Controller, Compute scenarios.

Usage:

0) install yardstick
1) mkdir -p /etc/yardstick/nodes
2) cp <yardstick_repo>/etc/yardstick/nodes/pod.yaml.sample \
       /etc/yardstick/nodes/pod.yaml
3) edit /etc/yardstick/nodes/pod.yaml (make show ip, username,
       ssh key are configured correctly)
4) yardstick -d task start \
       <yardstick_repo>/samples/ping-node-context.yaml
5) cat /tmp/yardstick.out

Design etherpad link:
    https://etherpad.opnfv.org/p/yardstick_framework

JIRA: YARDSTICK-169

Change-Id: I3f6ade8243e68d88326f23ed213edb32c638ed32
Signed-off-by: QiLiang <liangqi1@huawei.com>

3 files changed, 161 insertions, 0 deletions

diff --git a/tests/unit/benchmark/contexts/nodes_duplicate_sample.yaml b/tests/unit/benchmark/contexts/nodes_duplicate_sample.yaml
new file mode 100644
index 000000000..cdb5138c2
--- /dev/null
+++ b/tests/unit/benchmark/contexts/nodes_duplicate_sample.yaml
@@ -0,0 +1,13 @@
+nodes:
+-
+    name: node1
+    role: Controller
+    ip: 10.229.47.137
+    user: root
+    key_filename: /root/.yardstick_key
+-
+    name: node1
+    role: Controller
+    ip: 10.229.47.138
+    user: root
+    key_filename: /root/.yardstick_key
diff --git a/tests/unit/benchmark/contexts/nodes_sample.yaml b/tests/unit/benchmark/contexts/nodes_sample.yaml
new file mode 100644
index 000000000..59b5bb9fe
--- /dev/null
+++ b/tests/unit/benchmark/contexts/nodes_sample.yaml
@@ -0,0 +1,25 @@
+nodes:
+-
+    name: node1
+    role: Controller
+    ip: 10.229.47.137
+    user: root
+    key_filename: /root/.yardstick_key
+-
+    name: node2
+    role: Controller
+    ip: 10.229.47.138
+    user: root
+    key_filename: /root/.yardstick_key
+-
+    name: node3
+    role: Compute
+    ip: 10.229.47.139
+    user: root
+    key_filename: /root/.yardstick_key
+-
+    name: node4
+    role: Baremetal
+    ip: 10.229.47.140
+    user: root
+    key_filename: /root/.yardstick_key
diff --git a/tests/unit/benchmark/contexts/test_node.py b/tests/unit/benchmark/contexts/test_node.py
new file mode 100644
index 000000000..6939b8551
--- /dev/null
+++ b/tests/unit/benchmark/contexts/test_node.py
@@ -0,0 +1,123 @@
+#!/usr/bin/env python
+
+##############################################################################
+# Copyright (c) 2015 Huawei Technologies Co.,Ltd and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+# Unittest for yardstick.benchmark.contexts.node
+
+import os
+import unittest
+
+from yardstick.benchmark.contexts import node
+
+
+class NodeContextTestCase(unittest.TestCase):
+
+    NODES_SAMPLE = "nodes_sample.yaml"
+    NODES_DUPLICATE_SAMPLE = "nodes_duplicate_sample.yaml"
+    def setUp(self):
+        self.test_context = node.NodeContext()
+
+    def test_construct(self):
+
+        self.assertIsNone(self.test_context.name)
+        self.assertIsNone(self.test_context.file_path)
+        self.assertEqual(self.test_context.nodes, [])
+        self.assertEqual(self.test_context.controllers, [])
+        self.assertEqual(self.test_context.computes, [])
+        self.assertEqual(self.test_context.baremetals, [])
+
+    def test_unsuccessful_init(self):
+
+        attrs = {
+            'name': 'foo',
+            'file': self._get_file_abspath("error_file")
+        }
+
+        self.assertRaises(SystemExit, self.test_context.init, attrs)
+
+    def test_successful_init(self):
+
+        attrs = {
+            'name': 'foo',
+            'file': self._get_file_abspath(self.NODES_SAMPLE)
+        }
+
+        self.test_context.init(attrs)
+
+        self.assertEqual(self.test_context.name, "foo")
+        self.assertEqual(len(self.test_context.nodes), 4)
+        self.assertEqual(len(self.test_context.controllers), 2)
+        self.assertEqual(len(self.test_context.computes), 1)
+        self.assertEqual(self.test_context.computes[0]["name"], "node3")
+        self.assertEqual(len(self.test_context.baremetals), 1)
+        self.assertEqual(self.test_context.baremetals[0]["name"], "node4")
+
+    def test__get_server_with_dic_attr_name(self):
+
+        attrs = {
+            'name': 'foo',
+            'file': self._get_file_abspath(self.NODES_SAMPLE)
+        }
+
+        self.test_context.init(attrs)
+
+        attr_name = {'name': 'foo.bar'}
+        result = self.test_context._get_server(attr_name)
+
+        self.assertEqual(result, None)
+
+    def test__get_server_not_found(self):
+
+        attrs = {
+            'name': 'foo',
+            'file': self._get_file_abspath(self.NODES_SAMPLE)
+        }
+
+        self.test_context.init(attrs)
+
+        attr_name = 'bar.foo'
+        result = self.test_context._get_server(attr_name)
+
+        self.assertEqual(result, None)
+
+    def test__get_server_duplicate(self):
+
+        attrs = {
+            'name': 'foo',
+            'file': self._get_file_abspath(self.NODES_DUPLICATE_SAMPLE)
+        }
+
+        self.test_context.init(attrs)
+
+        attr_name = 'node1.foo'
+
+        self.assertRaises(SystemExit, self.test_context._get_server, attr_name)
+
+    def test__get_server_found(self):
+
+        attrs = {
+            'name': 'foo',
+            'file': self._get_file_abspath(self.NODES_SAMPLE)
+        }
+
+        self.test_context.init(attrs)
+
+        attr_name = 'node1.foo'
+        result = self.test_context._get_server(attr_name)
+
+        self.assertEqual(result['ip'], '10.229.47.137')
+        self.assertEqual(result['name'], 'node1.foo')
+        self.assertEqual(result['user'], 'root')
+        self.assertEqual(result['key_filename'], '/root/.yardstick_key')
+
+    def _get_file_abspath(self, filename):
+        curr_path = os.path.dirname(os.path.abspath(__file__))
+        file_path = os.path.join(curr_path, filename)
+        return file_path