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9823dfef MT |
1 | #!/usr/bin/python3 |
2 | ############################################################################### | |
3 | # # | |
4 | # collecty - A system statistics collection daemon for IPFire # | |
5 | # Copyright (C) 2015 IPFire development team # | |
6 | # # | |
7 | # This program is free software: you can redistribute it and/or modify # | |
8 | # it under the terms of the GNU 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 | # This program 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 General Public License for more details. # | |
16 | # # | |
17 | # You should have received a copy of the GNU General Public License # | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
19 | # # | |
20 | ############################################################################### | |
21 | ||
29455c5f MT |
22 | import os |
23 | ||
24 | import logging | |
25 | log = logging.getLogger("collecty.util") | |
26 | log.propagate = 1 | |
27 | ||
28 | from .constants import * | |
29 | ||
29455c5f MT |
30 | def get_network_interfaces(): |
31 | """ | |
32 | Returns all real network interfaces | |
33 | """ | |
34 | for interface in os.listdir("/sys/class/net"): | |
35 | # Skip some unwanted interfaces. | |
36 | if interface == "lo" or interface.startswith("mon."): | |
37 | continue | |
38 | ||
39 | path = os.path.join("/sys/class/net", interface) | |
40 | if not os.path.isdir(path): | |
41 | continue | |
42 | ||
43 | yield interface | |
44 | ||
4d9ed86e MT |
45 | def make_interval(interval): |
46 | try: | |
47 | return INTERVALS[interval] | |
48 | except KeyError: | |
49 | return "end-%s" % interval | |
50 | ||
29455c5f MT |
51 | class ProcNetSnmpParser(object): |
52 | """ | |
53 | This class parses /proc/net/snmp{,6} and allows | |
54 | easy access to the values. | |
55 | """ | |
56 | def __init__(self, intf=None): | |
57 | self.intf = intf | |
58 | self._data = {} | |
59 | ||
60 | if not self.intf: | |
61 | self._data.update(self._parse()) | |
62 | ||
63 | self._data.update(self._parse6()) | |
64 | ||
65 | def _parse(self): | |
66 | res = {} | |
67 | ||
68 | with open("/proc/net/snmp") as f: | |
69 | keys = {} | |
70 | ||
71 | for line in f.readlines(): | |
72 | line = line.strip() | |
73 | ||
74 | # Stop after an empty line | |
75 | if not line: | |
76 | break | |
77 | ||
78 | type, values = line.split(": ", 1) | |
79 | ||
80 | # Check if the keys are already known | |
81 | if type in keys: | |
82 | values = (int(v) for v in values.split()) | |
83 | res[type] = dict(zip(keys[type], values)) | |
84 | ||
85 | # Otherwise remember the keys | |
86 | else: | |
87 | keys[type] = values.split() | |
88 | ||
89 | return res | |
90 | ||
91 | def _parse6(self): | |
92 | res = {} | |
93 | ||
94 | fn = "/proc/net/snmp6" | |
95 | if self.intf: | |
96 | fn = os.path.join("/proc/net/dev_snmp6", self.intf) | |
97 | ||
98 | with open(fn) as f: | |
99 | for line in f.readlines(): | |
100 | key, val = line.split() | |
101 | ||
102 | try: | |
103 | type, key = key.split("6", 1) | |
104 | except ValueError: | |
105 | continue | |
106 | ||
107 | type += "6" | |
108 | val = int(val) | |
109 | ||
110 | try: | |
111 | res[type][key] = val | |
112 | except KeyError: | |
113 | res[type] = { key : val } | |
114 | ||
115 | return res | |
116 | ||
117 | def get(self, proto, key): | |
118 | """ | |
119 | Retrieves a value from the internally | |
120 | parse dictionary read from /proc/net/snmp. | |
121 | """ | |
122 | try: | |
123 | return self._data[proto][key] | |
124 | except KeyError: | |
125 | pass |