250acec9b47157b888ae5a200f88078e478f88e4
[snaps.git] / snaps / openstack / create_keypairs.py
1 # Copyright (c) 2017 Cable Television Laboratories, Inc. ("CableLabs")
2 #                    and others.  All rights reserved.
3 #
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
7 #
8 #     http://www.apache.org/licenses/LICENSE-2.0
9 #
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
15 import logging
16 import os
17
18 from novaclient.exceptions import NotFound
19
20 from snaps.openstack.utils import nova_utils
21
22 __author__ = 'spisarski'
23
24 logger = logging.getLogger('OpenStackKeypair')
25
26
27 class OpenStackKeypair:
28     """
29     Class responsible for creating a keypair in OpenStack
30     """
31
32     def __init__(self, os_creds, keypair_settings):
33         """
34         Constructor - all parameters are required
35         :param os_creds: The credentials to connect with OpenStack
36         :param keypair_settings: The settings used to create a keypair
37         """
38         self.__nova = None
39         self.__os_creds = os_creds
40         self.keypair_settings = keypair_settings
41         self.__nova = nova_utils.nova_client(os_creds)
42
43         # Attributes instantiated on create()
44         self.__keypair = None
45
46     def create(self, cleanup=False):
47         """
48         Responsible for creating the keypair object.
49         :param cleanup: Denotes whether or not this is being called for cleanup or not
50         """
51         self.__nova = nova_utils.nova_client(self.__os_creds)
52
53         logger.info('Creating keypair %s...' % self.keypair_settings.name)
54
55         self.__keypair = nova_utils.get_keypair_by_name(self.__nova, self.keypair_settings.name)
56
57         if not self.__keypair and not cleanup:
58             if self.keypair_settings.public_filepath and os.path.isfile(self.keypair_settings.public_filepath):
59                 logger.info("Uploading existing keypair")
60                 self.__keypair = nova_utils.upload_keypair_file(self.__nova, self.keypair_settings.name,
61                                                                 self.keypair_settings.public_filepath)
62             else:
63                 logger.info("Creating new keypair")
64                 # TODO - Make this value configurable
65                 keys = nova_utils.create_keys(1024)
66                 self.__keypair = nova_utils.upload_keypair(self.__nova, self.keypair_settings.name,
67                                                            nova_utils.public_key_openssh(keys))
68                 nova_utils.save_keys_to_files(keys, self.keypair_settings.public_filepath,
69                                               self.keypair_settings.private_filepath)
70
71         return self.__keypair
72
73     def clean(self):
74         """
75         Removes and deletes the keypair.
76         """
77         if self.__keypair:
78             try:
79                 nova_utils.delete_keypair(self.__nova, self.__keypair)
80             except NotFound:
81                 pass
82             self.__keypair = None
83
84     def get_keypair(self):
85         """
86         Returns the OpenStack keypair object
87         :return:
88         """
89         return self.__keypair
90
91
92 class KeypairSettings:
93     """
94     Class representing a keypair configuration
95     """
96
97     def __init__(self, config=None, name=None, public_filepath=None, private_filepath=None):
98         """
99         Constructor - all parameters are optional
100         :param config: Should be a dict object containing the configuration settings using the attribute names below
101                        as each member's the key and overrides any of the other parameters.
102         :param name: The keypair name.
103         :param public_filepath: The path to/from the filesystem where the public key file is or will be stored
104         :param private_filepath: The path where the generated private key file will be stored
105         :return:
106         """
107
108         if config:
109             self.name = config.get('name')
110             self.public_filepath = config.get('public_filepath')
111             self.private_filepath = config.get('private_filepath')
112         else:
113             self.name = name
114             self.public_filepath = public_filepath
115             self.private_filepath = private_filepath
116
117         if not self.name:
118             raise Exception('The attributes name, public_filepath, and private_filepath are required')