Add ansible_api so that python call ansible playbook by api.

modification:
    Add ansible_api so that we can get ansible running results easily.
    Add UT for ansible_api.py

JIRA:QTIP-99

Change-Id: I6e7b0b97e4d9ef184978833c61c17e944c1eb20c
Signed-off-by: zhifeng.jiang <jiang.zhifeng@zte.com.cn>

1 files changed, 64 insertions, 0 deletions

diff --git a/func/ansible_api.py b/func/ansible_api.py
new file mode 100644
index 00000000..57224eb7
--- /dev/null
+++ b/func/ansible_api.py
@@ -0,0 +1,64 @@
+##############################################################################
+# Copyright (c) 2016 ZTE Corp 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
+##############################################################################
+import os
+from collections import namedtuple
+import logging
+
+from ansible.parsing.dataloader import DataLoader
+from ansible.vars import VariableManager
+from ansible.inventory import Inventory
+from ansible.executor.playbook_executor import PlaybookExecutor
+
+
+class AnsibleApi:
+
+    def __init__(self):
+        self.variable_manager = VariableManager()
+        self.loader = DataLoader()
+        self.passwords = {}
+        self.pbex = None
+
+    def _check_path(self, file_path):
+        if not os.path.exists(file_path):
+            logging.error('The playbook %s does not exist' % file_path)
+            return False
+        else:
+            return True
+
+    def execute_playbook(self, hosts_file, playbook_path, pub_key_file, vars):
+        if not self._check_path(hosts_file):
+            return False
+
+        inventory = Inventory(loader=self.loader, variable_manager=self.variable_manager,
+                              host_list=hosts_file)
+        Options = namedtuple('Options', ['listtags', 'listtasks', 'listhosts', 'syntax',
+                                         'connection', 'module_path', 'forks', 'remote_user',
+                                         'private_key_file', 'ssh_common_args', 'ssh_extra_args',
+                                         'sftp_extra_args', 'scp_extra_args', 'become',
+                                         'become_method', 'become_user', 'verbosity', 'check'])
+        options = Options(listtags=False, listtasks=False, listhosts=False, syntax=False,
+                          connection='ssh', module_path=None, forks=100, remote_user='root',
+                          private_key_file=pub_key_file, ssh_common_args=None,
+                          ssh_extra_args=None, sftp_extra_args=None, scp_extra_args=None,
+                          become=True, become_method=None, become_user='root', verbosity=None,
+                          check=False)
+        self.variable_manager.extra_vars = vars
+
+        self.pbex = PlaybookExecutor(playbooks=[playbook_path], inventory=inventory,
+                                     variable_manager=self.variable_manager, loader=self.loader,
+                                     options=options, passwords=self.passwords)
+
+        return self.pbex.run()
+
+    def get_detail_playbook_stats(self):
+        if self.pbex:
+            stats = self.pbex._tqm._stats
+            return map(lambda x: (x, stats.summarize(x)), stats.processed.keys())
+        else:
+            return None