Get SUT information

JIRA: YARDSTICK-1063

We have the demand to get SUT information.
In this patch, we use ansible to get the SUT information.

Change-Id: I983675d6d367fa528f00c1b50bc6fa2a9cee03f7
Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

2 files changed, 69 insertions, 0 deletions

diff --git a/yardstick/common/ansible_common.py b/yardstick/common/ansible_common.py
index be262c215..38d2dd7c2 100644
--- a/yardstick/common/ansible_common.py
+++ b/yardstick/common/ansible_common.py
@@ -31,6 +31,7 @@ import six.moves.configparser as ConfigParser
 import yaml
 from six import StringIO
 from chainmap import ChainMap
+from oslo_serialization import jsonutils
 
 from yardstick.common.utils import Timer
 from yardstick.common import constants as consts
@@ -508,6 +509,58 @@ class AnsibleCommon(object):
             timeout = 1200.0
         return timeout
 
+    def _generate_ansible_cfg(self, directory):
+        parser = ConfigParser.ConfigParser()
+        parser.add_section('defaults')
+        parser.set('defaults', 'host_key_checking', 'False')
+
+        cfg_path = os.path.join(directory, 'setup.cfg')
+        with open(cfg_path, 'w') as f:
+            parser.write(f)
+
+    def get_sut_info(self, directory, sut_dir='sut'):
+        if not os.path.isdir(directory):
+            raise OSError('No such directory: %s' % directory)
+
+        self._generate_ansible_cfg(directory)
+
+        prefix = 'tmp'
+        self.gen_inventory_ini_dict()
+        ini_file = self._gen_ansible_inventory_file(directory, prefix=prefix)
+        with ini_file as f:
+            inventory_path = str(f)
+
+        self._exec_get_sut_info_cmd(directory, inventory_path, sut_dir)
+
+        sut_dir = os.path.join(directory, sut_dir)
+        sut_info = self._gen_sut_info_dict(sut_dir)
+
+        return sut_info
+
+    def _exec_get_sut_info_cmd(self, directory, inventory_path, sut_dir):
+        cmd = ['ansible', 'all', '-m', 'setup', '-i',
+               inventory_path, '--tree', sut_dir]
+
+        proc = Popen(cmd, stdout=PIPE, cwd=directory)
+        output, _ = proc.communicate()
+        retcode = proc.wait()
+        LOG.debug("exit status = %s", retcode)
+        if retcode != 0:
+            raise CalledProcessError(retcode, cmd, output)
+
+    def _gen_sut_info_dict(self, sut_dir):
+        sut_info = {}
+
+        if os.path.isdir(sut_dir):
+            root, _, files = next(os.walk(sut_dir))
+            for filename in files:
+                abs_path = os.path.join(root, filename)
+                with open(abs_path) as f:
+                    data = jsonutils.load(f)
+                sut_info[filename] = data
+
+        return sut_info
+
     def execute_ansible(self, playbooks, directory, timeout=None,
                         extra_vars=None, ansible_check=False, prefix='tmp',
                         verbose=False):
diff --git a/yardstick/tests/unit/common/test_ansible_common.py b/yardstick/tests/unit/common/test_ansible_common.py
index b01195fcc..48d8a60c8 100644
--- a/yardstick/tests/unit/common/test_ansible_common.py
+++ b/yardstick/tests/unit/common/test_ansible_common.py
@@ -17,6 +17,7 @@ from __future__ import absolute_import
 
 import os
 import tempfile
+import shutil
 from collections import defaultdict
 
 import mock
@@ -246,3 +247,18 @@ class AnsibleCommonTestCase(unittest.TestCase):
             a.execute_ansible('', d, ansible_check=True, verbose=True)
         finally:
             os.rmdir(d)
+
+    def test_get_sut_info(self):
+        d = tempfile.mkdtemp()
+        a = ansible_common.AnsibleCommon({})
+        try:
+            a.get_sut_info(d)
+        finally:
+            shutil.rmtree(d)
+
+    def test_get_sut_info_not_exist(self):
+        a = ansible_common.AnsibleCommon({})
+        try:
+            a.get_sut_info('/hello/world')
+        except OSError:
+            pass