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f82758bf RP |
1 | #!/usr/bin/python |
2 | # | |
3 | # Copyright 2014 Cumulus Networks, Inc. All rights reserved. | |
4 | # Author: Roopa Prabhu, roopa@cumulusnetworks.com | |
5 | # | |
6 | ||
7 | try: | |
8 | from ipaddr import IPNetwork | |
9 | from sets import Set | |
10 | from ifupdown.iface import * | |
11 | from ifupdownaddons.modulebase import moduleBase | |
12 | from ifupdownaddons.iproute2 import iproute2 | |
13 | import os | |
14 | import glob | |
15 | import logging | |
16 | import signal | |
17 | import subprocess | |
18 | import re | |
19 | except ImportError, e: | |
20 | raise ImportError (str(e) + "- required module not found") | |
21 | ||
22 | class vrrpd(moduleBase): | |
23 | """ ifupdown2 addon module to configure vrrpd attributes """ | |
24 | ||
25 | _modinfo = {'mhelp' : 'ethtool configuration module for interfaces', | |
26 | 'attrs': { | |
27 | 'vrrp-id' : | |
28 | {'help' : 'vrrp instance id', | |
29 | 'example' : ['vrrp-id 1']}, | |
30 | 'vrrp-priority' : | |
31 | {'help': 'set vrrp priority', | |
32 | 'example' : ['vrrp-priority 20']}, | |
33 | 'vrrp-virtual-ip' : | |
34 | {'help': 'set vrrp virtual ip', | |
35 | 'example' : ['vrrp-virtual-ip 10.0.1.254']}}} | |
36 | ||
37 | def __init__(self, *args, **kargs): | |
38 | moduleBase.__init__(self, *args, **kargs) | |
39 | self.ipcmd = None | |
40 | ||
41 | def _check_if_process_is_running(self, cmdname, cmdline): | |
42 | targetpids = [] | |
43 | pidstr = '' | |
44 | try: | |
45 | pidstr = subprocess.check_output(['/bin/pidof', | |
46 | '%s' %cmdname]).strip('\n') | |
47 | except: | |
48 | pass | |
49 | if not pidstr: | |
50 | return [] | |
51 | ||
52 | pids = pidstr.split() | |
53 | if not pids: | |
54 | return targetpids | |
55 | for pid in pids: | |
56 | tmpcmdline = cmdline.replace(' ', '') | |
57 | try: | |
58 | pcmdline = self.read_file_oneline('/proc/%s/cmdline' %pid) | |
59 | pcmdline = re.sub(r'\\(.)', r'\1', pcmdline) | |
60 | self.logger.info('(%s)' %(pcmdline)) | |
61 | self.logger.info('(%s)' %(tmpcmdline)) | |
62 | self.logger.info('(%d) (%d)' %(len(pcmdline), len(tmpcmdline))) | |
63 | if pcmdline and pcmdline == tmpcmdline: | |
64 | targetpids.append(pid) | |
65 | except: | |
66 | pass | |
67 | return targetpids | |
68 | ||
69 | def _up(self, ifaceobj): | |
70 | """ up vrrpd -n -D -i $IFACE -v 1 -p 20 10.0.1.254 | |
71 | up ifplugd -i $IFACE -b -f -u0 -d1 -I -p -q """ | |
72 | ||
73 | if (not self.DRYRUN and | |
74 | not os.path.exists('/sys/class/net/%s' %ifaceobj.name)): | |
75 | return | |
76 | ||
77 | cmd = '' | |
78 | attrval = ifaceobj.get_attr_value_first('vrrp-id') | |
79 | if attrval: | |
80 | cmd += ' -v %s' %attrval | |
81 | else: | |
82 | return | |
83 | attrval = ifaceobj.get_attr_value_first('vrrp-priority') | |
84 | if attrval: | |
85 | cmd += ' -p %s' %attrval | |
86 | else: | |
87 | self.logger.warn('%s: incomplete vrrp parameters ' %ifaceobj.name, | |
88 | '(priority not found)') | |
89 | attrval = ifaceobj.get_attr_value_first('vrrp-virtual-ip') | |
90 | if attrval: | |
91 | cmd += ' %s' %attrval | |
92 | else: | |
93 | self.logger.warn('%s: incomplete vrrp arguments ' %ifaceobj.name, | |
94 | '(virtual ip not found)') | |
95 | return | |
96 | cmd = '/usr/sbin/vrrpd -n -D -i %s %s' %(ifaceobj.name, cmd) | |
97 | self.exec_command(cmd) | |
98 | ||
99 | cmd = '/usr/sbin/ifplugd -i %s -b -f -u0 -d1 -I -p -q' %ifaceobj.name | |
100 | if self._check_if_process_is_running('/usr/sbin/ifplugd', cmd): | |
101 | self.logger.info('%s: ifplugd already running' %ifaceobj.name) | |
102 | return | |
103 | self.exec_command(cmd) | |
104 | ||
105 | def _kill_pid_from_file(self, pidfilename): | |
106 | if os.path.exists(pidfilename): | |
107 | pid = self.read_file_oneline(pidfilename) | |
108 | if os.path.exists('/proc/%s' %pid): | |
109 | os.kill(int(pid), signal.SIGTERM) | |
110 | ||
111 | def _down(self, ifaceobj): | |
112 | """ down ifplugd -k -i $IFACE | |
113 | down kill $(cat /var/run/vrrpd_$IFACE_*.pid) """ | |
114 | attrval = ifaceobj.get_attr_value_first('vrrp-id') | |
115 | if not attrval: | |
116 | return | |
117 | try: | |
118 | self.exec_command('/usr/sbin/ifplugd -k -i %s' %ifaceobj.name) | |
119 | except Exception, e: | |
120 | self.logger.debug('%s: ifplugd down error (%s)' | |
121 | %(ifaceobj.name, str(e))) | |
122 | pass | |
123 | ||
124 | for pidfile in glob.glob('/var/run/vrrpd_%s_*.pid' %ifaceobj.name): | |
125 | try: | |
126 | self._kill_pid_from_file(pidfile) | |
127 | except Exception, e: | |
128 | self.logger.debug('%s: vrrpd down error (%s)' | |
129 | %(ifaceobj.name, str(e))) | |
130 | pass | |
131 | ||
132 | def _query_check(self, ifaceobj, ifaceobjcurr): | |
133 | # XXX | |
134 | return | |
135 | ||
136 | ||
137 | _run_ops = {'post-up' : _up, | |
138 | 'pre-down' : _down} | |
139 | ||
140 | def get_ops(self): | |
141 | """ returns list of ops supported by this module """ | |
142 | return self._run_ops.keys() | |
143 | ||
144 | def run(self, ifaceobj, operation, query_ifaceobj=None, **extra_args): | |
145 | """ run ethtool configuration on the interface object passed as | |
146 | argument | |
147 | ||
148 | Args: | |
149 | **ifaceobj** (object): iface object | |
150 | ||
151 | **operation** (str): any of 'post-up', 'query-checkcurr', | |
152 | 'query-running' | |
153 | Kwargs: | |
154 | **query_ifaceobj** (object): query check ifaceobject. This is only | |
155 | valid when op is 'query-checkcurr'. It is an object same as | |
156 | ifaceobj, but contains running attribute values and its config | |
157 | status. The modules can use it to return queried running state | |
158 | of interfaces. status is success if the running state is same | |
159 | as user required state in ifaceobj. error otherwise. | |
160 | """ | |
161 | op_handler = self._run_ops.get(operation) | |
162 | if not op_handler: | |
163 | return | |
164 | if operation == 'query-checkcurr': | |
165 | op_handler(self, ifaceobj, query_ifaceobj) | |
166 | else: | |
167 | op_handler(self, ifaceobj) |