1
|
|
|
# -*- coding: utf-8 -*- |
2
|
|
|
# |
3
|
|
|
# This file is part of Glances. |
4
|
|
|
# |
5
|
|
|
# Copyright (C) 2019 Nicolargo <[email protected]> |
6
|
|
|
# |
7
|
|
|
# Glances is free software; you can redistribute it and/or modify |
8
|
|
|
# it under the terms of the GNU Lesser General Public License as published by |
9
|
|
|
# the Free Software Foundation, either version 3 of the License, or |
10
|
|
|
# (at your option) any later version. |
11
|
|
|
# |
12
|
|
|
# Glances is distributed in the hope that it will be useful, |
13
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
14
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15
|
|
|
# GNU Lesser General Public License for more details. |
16
|
|
|
# |
17
|
|
|
# You should have received a copy of the GNU Lesser General Public License |
18
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>. |
19
|
|
|
|
20
|
|
|
"""CouchDB interface class.""" |
21
|
|
|
|
22
|
|
|
import sys |
|
|
|
|
23
|
|
|
from datetime import datetime |
|
|
|
|
24
|
|
|
|
25
|
|
|
from glances.logger import logger |
|
|
|
|
26
|
|
|
from glances.exports.glances_export import GlancesExport |
|
|
|
|
27
|
|
|
|
28
|
|
|
import couchdb |
|
|
|
|
29
|
|
|
import couchdb.mapping |
|
|
|
|
30
|
|
|
|
31
|
|
|
|
32
|
|
|
class Export(GlancesExport): |
33
|
|
|
|
34
|
|
|
"""This class manages the CouchDB export module.""" |
35
|
|
|
|
36
|
|
|
def __init__(self, config=None, args=None): |
37
|
|
|
"""Init the CouchDB export IF.""" |
38
|
|
|
super(Export, self).__init__(config=config, args=args) |
39
|
|
|
|
40
|
|
|
# Mandatories configuration keys (additional to host and port) |
41
|
|
|
self.db = None |
|
|
|
|
42
|
|
|
|
43
|
|
|
# Optionals configuration keys |
44
|
|
|
self.user = None |
45
|
|
|
self.password = None |
46
|
|
|
|
47
|
|
|
# Load the Cassandra configuration file section |
48
|
|
|
self.export_enable = self.load_conf('couchdb', |
49
|
|
|
mandatories=['host', 'port', 'db'], |
50
|
|
|
options=['user', 'password']) |
51
|
|
|
if not self.export_enable: |
52
|
|
|
sys.exit(2) |
53
|
|
|
|
54
|
|
|
# Init the CouchDB client |
55
|
|
|
self.client = self.init() |
56
|
|
|
|
57
|
|
|
def init(self): |
58
|
|
|
"""Init the connection to the CouchDB server.""" |
59
|
|
|
if not self.export_enable: |
60
|
|
|
return None |
61
|
|
|
|
62
|
|
|
if self.user is None: |
63
|
|
|
server_uri = 'http://{}:{}/'.format(self.host, |
64
|
|
|
self.port) |
65
|
|
|
else: |
66
|
|
|
server_uri = 'http://{}:{}@{}:{}/'.format(self.user, |
67
|
|
|
self.password, |
68
|
|
|
self.host, |
69
|
|
|
self.port) |
70
|
|
|
|
71
|
|
|
try: |
72
|
|
|
s = couchdb.Server(server_uri) |
|
|
|
|
73
|
|
|
except Exception as e: |
|
|
|
|
74
|
|
|
logger.critical("Cannot connect to CouchDB server %s (%s)" % (server_uri, e)) |
|
|
|
|
75
|
|
|
sys.exit(2) |
76
|
|
|
else: |
77
|
|
|
logger.info("Connected to the CouchDB server %s" % server_uri) |
|
|
|
|
78
|
|
|
|
79
|
|
|
try: |
80
|
|
|
s[self.db] |
81
|
|
|
except Exception as e: |
|
|
|
|
82
|
|
|
# Database did not exist |
83
|
|
|
# Create it... |
84
|
|
|
s.create(self.db) |
85
|
|
|
else: |
86
|
|
|
logger.info("There is already a %s database" % self.db) |
|
|
|
|
87
|
|
|
|
88
|
|
|
return s |
89
|
|
|
|
90
|
|
|
def database(self): |
91
|
|
|
"""Return the CouchDB database object""" |
92
|
|
|
return self.client[self.db] |
93
|
|
|
|
94
|
|
|
def export(self, name, columns, points): |
95
|
|
|
"""Write the points to the CouchDB server.""" |
96
|
|
|
logger.debug("Export {} stats to CouchDB".format(name)) |
|
|
|
|
97
|
|
|
|
98
|
|
|
# Create DB input |
99
|
|
|
data = dict(zip(columns, points)) |
100
|
|
|
|
101
|
|
|
# Set the type to the current stat name |
102
|
|
|
data['type'] = name |
103
|
|
|
data['time'] = couchdb.mapping.DateTimeField()._to_json(datetime.now()) |
|
|
|
|
104
|
|
|
|
105
|
|
|
# Write input to the CouchDB database |
106
|
|
|
# Result can be view: http://127.0.0.1:5984/_utils |
107
|
|
|
try: |
108
|
|
|
self.client[self.db].save(data) |
109
|
|
|
except Exception as e: |
|
|
|
|
110
|
|
|
logger.error("Cannot export {} stats to CouchDB ({})".format(name, e)) |
|
|
|
|
111
|
|
|
|