1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
# ================================================================================
# Copyright (c) 2019-2020 AT&T Intellectual Property. All rights reserved.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
"""read and use the config"""
import copy
import json
import logging
import logging.config
import os
from otihandler.consul_client import ConsulClient
os.makedirs('logs', exist_ok=True)
logging.basicConfig(
filename='logs/oti_handler.log', \
format='%(asctime)s.%(msecs)03d %(levelname)+8s ' + \
'%(threadName)s %(name)s.%(funcName)s: %(message)s', \
datefmt='%Y%m%d_%H%M%S', level=logging.DEBUG)
class Config(object):
"""main config of the application"""
CONFIG_FILE_PATH = "etc/config.json"
LOGGER_CONFIG_FILE_PATH = "etc/common_logger.config"
SERVICE_NAME = "oti_handler"
FIELD_SYSTEM = "system"
FIELD_WSERVICE_PORT = "wservice_port"
FIELD_TLS = "tls"
_logger = logging.getLogger("oti_handler.config")
config = None
cloudify_proto = None
cloudify_addr = None
cloudify_port = None
cloudify_user = None
cloudify_pass = None
cloudify = None
consul_url = "http://consul:8500"
tls_cacert_file = None
tls_server_cert_file = None
tls_private_key_file = None
tls_server_ca_chain_file = None
wservice_port = 9443
@staticmethod
def _get_tls_file_path(tls_config, cert_directory, tls_name):
"""calc file path and verify its existance"""
file_name = tls_config.get(tls_name)
if not file_name:
return None
tls_file_path = os.path.join(cert_directory, file_name)
if not os.path.isfile(tls_file_path) or not os.access(tls_file_path, os.R_OK):
Config._logger.error("invalid %s: %s", tls_name, tls_file_path)
return None
return tls_file_path
@staticmethod
def _set_tls_config(tls_config):
"""verify and set tls certs in config"""
try:
Config.tls_cacert_file = None
Config.tls_server_cert_file = None
Config.tls_private_key_file = None
Config.tls_server_ca_chain_file = None
if not (tls_config and isinstance(tls_config, dict)):
Config._logger.info("no tls in config: %s", json.dumps(tls_config))
return
cert_directory = tls_config.get("cert_directory")
if not (cert_directory and isinstance(cert_directory, str)):
Config._logger.warning("unexpected tls.cert_directory: %r", cert_directory)
return
cert_directory = os.path.join(
os.path.dirname(os.path.dirname(os.path.realpath(__file__))), str(cert_directory))
if not (cert_directory and os.path.isdir(cert_directory)):
Config._logger.warning("ignoring invalid cert_directory: %s", cert_directory)
return
Config.tls_cacert_file = Config._get_tls_file_path(tls_config, cert_directory, "cacert")
Config.tls_server_cert_file = Config._get_tls_file_path(tls_config, cert_directory,
"server_cert")
Config.tls_private_key_file = Config._get_tls_file_path(tls_config, cert_directory,
"private_key")
Config.tls_server_ca_chain_file = Config._get_tls_file_path(tls_config, cert_directory,
"server_ca_chain")
finally:
Config._logger.info("tls_cacert_file = %s", Config.tls_cacert_file)
Config._logger.info("tls_server_cert_file = %s", Config.tls_server_cert_file)
Config._logger.info("tls_private_key_file = %s", Config.tls_private_key_file)
Config._logger.info("tls_server_ca_chain_file = %s", Config.tls_server_ca_chain_file)
@staticmethod
def merge(new_config):
"""merge the new_config into current config - override the values"""
if not new_config:
return
if not Config.config:
Config.config = new_config
return
new_config = copy.deepcopy(new_config)
Config.config.update(new_config)
@staticmethod
def get_system_name():
"""find the name of the oti_handler system
to be used as the key in consul-kv for config of oti_handler
"""
return (Config.config or {}).get(Config.FIELD_SYSTEM, Config.SERVICE_NAME)
@staticmethod
def discover():
"""bring and merge the config settings from Consul"""
system_key = Config.get_system_name()
new_config = ConsulClient.get_value(system_key)
if not new_config or not isinstance(new_config, dict):
Config._logger.warn("unexpected config from Consul: %s", new_config)
return
Config._logger.debug("loaded config from Consul(%s): %s",
system_key, json.dumps(new_config))
Config._logger.debug("config before merge from Consul: %s", json.dumps(Config.config))
Config.merge(new_config.get(Config.SERVICE_NAME))
Config._logger.debug("merged config from Consul: %s", json.dumps(Config.config))
@staticmethod
def load_from_file(file_path=None):
"""read and store the config from config file"""
if not file_path:
file_path = Config.CONFIG_FILE_PATH
loaded_config = None
if os.access(file_path, os.R_OK):
with open(file_path, 'r') as config_json:
loaded_config = json.load(config_json)
if not loaded_config:
Config._logger.info("config not loaded from file: %s", file_path)
return
Config._logger.info("config loaded from file: %s", file_path)
logging_config = loaded_config.get("logging")
if logging_config:
logging.config.dictConfig(logging_config)
Config.wservice_port = loaded_config.get(Config.FIELD_WSERVICE_PORT, Config.wservice_port)
local_config = loaded_config.get(Config.SERVICE_NAME, {})
Config._set_tls_config(local_config.get(Config.FIELD_TLS))
Config.merge(loaded_config.get(Config.SERVICE_NAME))
return True
|
