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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
#!/usr/bin/env python
#
# Copyright(c) 2017-2019 Intel Corporation and OPNFV. 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.
#
import json
import sys
import base64
import logging
import argparse
try:
import configparser
except ImportError:
import ConfigParser as configparser
from distutils.util import strtobool
from kafka import KafkaConsumer
from normalizer import Normalizer
from normalizer import CollectdValue
try:
# For Python 3.0 and later
import urllib.request as url
except ImportError:
# Fall back to Python 2's urllib2
import urllib2 as url
class VESApp(Normalizer):
"""VES Application"""
def __init__(self):
"""Application initialization"""
self._app_config = {
'Domain': '127.0.0.1',
'Port': 30000,
'Path': '',
'Username': '',
'Password': '',
'Topic': '',
'UseHttps': False,
'SendEventInterval': 20.0,
'ApiVersion': 5.1,
'KafkaPort': 9092,
'KafkaBroker': 'localhost'
}
def send_data(self, event):
"""Send event to VES"""
server_url = "http{}://{}:{}{}/eventListener/v{}{}".format(
's' if self._app_config['UseHttps'] else '',
self._app_config['Domain'], int(self._app_config['Port']),
'{}'.format('/{}'.format(self._app_config['Path']) if len(
self._app_config['Path']) > 0 else ''),
int(self._app_config['ApiVersion']), '{}'.format(
'/{}'.format(self._app_config['Topic']) if len(
self._app_config['Topic']) > 0 else ''))
logging.info('Vendor Event Listener is at: {}'.format(server_url))
credentials = base64.b64encode('{}:{}'.format(
self._app_config['Username'],
self._app_config['Password']).encode()).decode()
logging.info('Authentication credentials are: {}'.format(credentials))
try:
request = url.Request(server_url)
request.add_header('Authorization', 'Basic {}'.format(credentials))
request.add_header('Content-Type', 'application/json')
event_str = json.dumps(event).encode()
logging.debug("Sending {} to {}".format(event_str, server_url))
url.urlopen(request, event_str, timeout=1)
logging.debug("Sent data to {} successfully".format(server_url))
except url.HTTPError as e:
logging.error('Vendor Event Listener exception: {}'.format(e))
except url.URLError as e:
logging.error(
'Vendor Event Listener is is not reachable: {}'.format(e))
except Exception as e:
logging.error('Vendor Event Listener error: {}'.format(e))
def config(self, config):
"""VES option configuration"""
for key, value in config.items('config'):
if key in self._app_config:
try:
if type(self._app_config[key]) == int:
value = int(value)
elif type(self._app_config[key]) == float:
value = float(value)
elif type(self._app_config[key]) == bool:
value = bool(strtobool(value))
if isinstance(value, type(self._app_config[key])):
self._app_config[key] = value
else:
logging.error("Type mismatch with %s" % key)
sys.exit()
except ValueError:
logging.error("Incorrect value type for %s" % key)
sys.exit()
else:
logging.error("Incorrect key configuration %s" % key)
sys.exit()
def init(self, configfile, schema_file):
if configfile is not None:
# read VES configuration file if provided
config = configparser.ConfigParser()
config.optionxform = lambda option: option
config.read(configfile)
self.config(config)
# initialize normalizer
self.initialize(schema_file, self._app_config['SendEventInterval'])
def run(self):
"""Consumer JSON data from kafka broker"""
kafka_server = '{}:{}'.format(
self._app_config.get('KafkaBroker'),
self._app_config.get('KafkaPort'))
consumer = KafkaConsumer(
'collectd', bootstrap_servers=kafka_server,
auto_offset_reset='latest', enable_auto_commit=False,
value_deserializer=lambda m: json.loads(m.decode('ascii')))
for message in consumer:
for kafka_data in message.value:
# {
# u'dstypes': [u'derive'],
# u'plugin': u'cpu',
# u'dsnames': [u'value'],
# u'interval': 10.0,
# u'host': u'localhost',
# u'values': [99.9978996416267],
# u'time': 1502114956.244,
# u'plugin_instance': u'44',
# u'type_instance': u'idle',
# u'type': u'cpu'
# }
logging.debug('{}:run():data={}'.format(
self.__class__.__name__, kafka_data))
for ds_name in kafka_data['dsnames']:
index = kafka_data['dsnames'].index(ds_name)
val_hash = CollectdValue.hash_gen(
kafka_data['host'], kafka_data['plugin'],
kafka_data['plugin_instance'], kafka_data['type'],
kafka_data['type_instance'], ds_name)
collector = self.get_collector()
val = collector.get(val_hash)
if val:
# update the value
val.value = kafka_data['values'][index]
val.time = kafka_data['time']
del(val)
else:
# add new value into the collector
val = CollectdValue()
val.host = kafka_data['host']
val.plugin = kafka_data['plugin']
val.plugin_instance = kafka_data['plugin_instance']
val.type = kafka_data['type']
val.type_instance = kafka_data['type_instance']
val.value = kafka_data['values'][index]
val.interval = kafka_data['interval']
val.time = kafka_data['time']
val.ds_name = ds_name
collector.add(val)
def main():
# Parsing cmdline options
parser = argparse.ArgumentParser()
parser.add_argument("--events-schema", dest="schema", required=True,
help="YAML events schema definition", metavar="FILE")
parser.add_argument("--config", dest="configfile", default=None,
help="Specify config file", metavar="FILE")
parser.add_argument("--loglevel", dest="level", default='INFO',
choices=['DEBUG', 'INFO', 'WARNING', 'ERROR'],
help="Specify log level (default: %(default)s)",
metavar="LEVEL")
parser.add_argument("--logfile", dest="logfile", default='ves_app.log',
help="Specify log file (default: %(default)s)",
metavar="FILE")
args = parser.parse_args()
# Create log file
logging.basicConfig(filename=args.logfile,
format='%(asctime)s %(message)s',
level=args.level)
if args.configfile is None:
logging.warning("No configfile specified, using default options")
# Create Application Instance
application_instance = VESApp()
application_instance.init(args.configfile, args.schema)
try:
# Run the plugin
application_instance.run()
except KeyboardInterrupt:
logging.info(" - Ctrl-C handled, exiting gracefully")
except Exception as e:
logging.error('{}, {}'.format(type(e), e))
finally:
application_instance.destroy()
sys.exit()
if __name__ == '__main__':
main()
|
