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830c91d7 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 * | |
a193d8d1 | 11 | from ifupdown.utils import utils |
830c91d7 RP |
12 | from ifupdownaddons.modulebase import moduleBase |
13 | from ifupdownaddons.iproute2 import iproute2 | |
fc5e1735 | 14 | import ifupdown.ifupdownflags as ifupdownflags |
830c91d7 RP |
15 | import os |
16 | import glob | |
17 | import logging | |
18 | import signal | |
830c91d7 RP |
19 | import re |
20 | except ImportError, e: | |
21 | raise ImportError (str(e) + "- required module not found") | |
22 | ||
23 | class vrrpd(moduleBase): | |
24 | """ ifupdown2 addon module to configure vrrpd attributes """ | |
25 | ||
26 | _modinfo = {'mhelp' : 'ethtool configuration module for interfaces', | |
27 | 'attrs': { | |
28 | 'vrrp-id' : | |
29 | {'help' : 'vrrp instance id', | |
c6370b56 | 30 | 'validrange' : ['1', '4096'], |
830c91d7 RP |
31 | 'example' : ['vrrp-id 1']}, |
32 | 'vrrp-priority' : | |
33 | {'help': 'set vrrp priority', | |
c6370b56 | 34 | 'validrange' : ['0', '255'], |
830c91d7 RP |
35 | 'example' : ['vrrp-priority 20']}, |
36 | 'vrrp-virtual-ip' : | |
37 | {'help': 'set vrrp virtual ip', | |
482b2fab | 38 | 'validvals' : ['<ipv4>', ], |
830c91d7 RP |
39 | 'example' : ['vrrp-virtual-ip 10.0.1.254']}}} |
40 | ||
41 | def __init__(self, *args, **kargs): | |
42 | moduleBase.__init__(self, *args, **kargs) | |
43 | self.ipcmd = None | |
44 | ||
45 | def _check_if_process_is_running(self, cmdname, cmdline): | |
46 | targetpids = [] | |
47 | pidstr = '' | |
48 | try: | |
a193d8d1 JF |
49 | cmdl = ['/bin/pidof', cmdname] |
50 | pidstr = utils.exec_commandl(cmdl, stderr=None).strip('\n') | |
830c91d7 RP |
51 | except: |
52 | pass | |
53 | if not pidstr: | |
54 | return [] | |
55 | ||
56 | pids = pidstr.split() | |
57 | if not pids: | |
58 | return targetpids | |
59 | for pid in pids: | |
60 | tmpcmdline = cmdline.replace(' ', '') | |
61 | try: | |
62 | pcmdline = self.read_file_oneline('/proc/%s/cmdline' %pid) | |
63 | pcmdline = re.sub(r'\\(.)', r'\1', pcmdline) | |
64 | self.logger.info('(%s)' %(pcmdline)) | |
65 | self.logger.info('(%s)' %(tmpcmdline)) | |
66 | self.logger.info('(%d) (%d)' %(len(pcmdline), len(tmpcmdline))) | |
67 | if pcmdline and pcmdline == tmpcmdline: | |
68 | targetpids.append(pid) | |
69 | except: | |
70 | pass | |
830c91d7 RP |
71 | return targetpids |
72 | ||
73 | def _up(self, ifaceobj): | |
74 | """ up vrrpd -n -D -i $IFACE -v 1 -p 20 10.0.1.254 | |
75 | up ifplugd -i $IFACE -b -f -u0 -d1 -I -p -q """ | |
76 | ||
fc5e1735 | 77 | if (not ifupdownflags.flags.DRYRUN and |
830c91d7 RP |
78 | not os.path.exists('/sys/class/net/%s' %ifaceobj.name)): |
79 | return | |
80 | ||
81 | cmd = '' | |
82 | attrval = ifaceobj.get_attr_value_first('vrrp-id') | |
83 | if attrval: | |
84 | cmd += ' -v %s' %attrval | |
85 | else: | |
86 | return | |
87 | attrval = ifaceobj.get_attr_value_first('vrrp-priority') | |
88 | if attrval: | |
89 | cmd += ' -p %s' %attrval | |
90 | else: | |
91 | self.logger.warn('%s: incomplete vrrp parameters ' %ifaceobj.name, | |
92 | '(priority not found)') | |
93 | attrval = ifaceobj.get_attr_value_first('vrrp-virtual-ip') | |
94 | if attrval: | |
95 | cmd += ' %s' %attrval | |
96 | else: | |
97 | self.logger.warn('%s: incomplete vrrp arguments ' %ifaceobj.name, | |
98 | '(virtual ip not found)') | |
99 | return | |
100 | cmd = '/usr/sbin/vrrpd -n -D -i %s %s' %(ifaceobj.name, cmd) | |
a193d8d1 | 101 | utils.exec_command(cmd) |
830c91d7 RP |
102 | |
103 | cmd = '/usr/sbin/ifplugd -i %s -b -f -u0 -d1 -I -p -q' %ifaceobj.name | |
104 | if self._check_if_process_is_running('/usr/sbin/ifplugd', cmd): | |
105 | self.logger.info('%s: ifplugd already running' %ifaceobj.name) | |
106 | return | |
a193d8d1 | 107 | utils.exec_command(cmd) |
830c91d7 RP |
108 | |
109 | def _kill_pid_from_file(self, pidfilename): | |
110 | if os.path.exists(pidfilename): | |
111 | pid = self.read_file_oneline(pidfilename) | |
112 | if os.path.exists('/proc/%s' %pid): | |
113 | os.kill(int(pid), signal.SIGTERM) | |
114 | ||
115 | def _down(self, ifaceobj): | |
116 | """ down ifplugd -k -i $IFACE | |
117 | down kill $(cat /var/run/vrrpd_$IFACE_*.pid) """ | |
118 | attrval = ifaceobj.get_attr_value_first('vrrp-id') | |
119 | if not attrval: | |
120 | return | |
121 | try: | |
a193d8d1 | 122 | utils.exec_command('/usr/sbin/ifplugd -k -i %s' % ifaceobj.name) |
830c91d7 RP |
123 | except Exception, e: |
124 | self.logger.debug('%s: ifplugd down error (%s)' | |
125 | %(ifaceobj.name, str(e))) | |
126 | pass | |
127 | ||
128 | for pidfile in glob.glob('/var/run/vrrpd_%s_*.pid' %ifaceobj.name): | |
129 | try: | |
130 | self._kill_pid_from_file(pidfile) | |
131 | except Exception, e: | |
132 | self.logger.debug('%s: vrrpd down error (%s)' | |
133 | %(ifaceobj.name, str(e))) | |
134 | pass | |
135 | ||
136 | def _query_check(self, ifaceobj, ifaceobjcurr): | |
137 | # XXX | |
138 | return | |
139 | ||
140 | ||
141 | _run_ops = {'post-up' : _up, | |
142 | 'pre-down' : _down} | |
143 | ||
144 | def get_ops(self): | |
145 | """ returns list of ops supported by this module """ | |
146 | return self._run_ops.keys() | |
147 | ||
148 | def run(self, ifaceobj, operation, query_ifaceobj=None, **extra_args): | |
149 | """ run ethtool configuration on the interface object passed as | |
150 | argument | |
151 | ||
152 | Args: | |
153 | **ifaceobj** (object): iface object | |
154 | ||
155 | **operation** (str): any of 'post-up', 'query-checkcurr', | |
156 | 'query-running' | |
157 | Kwargs: | |
158 | **query_ifaceobj** (object): query check ifaceobject. This is only | |
159 | valid when op is 'query-checkcurr'. It is an object same as | |
160 | ifaceobj, but contains running attribute values and its config | |
161 | status. The modules can use it to return queried running state | |
162 | of interfaces. status is success if the running state is same | |
163 | as user required state in ifaceobj. error otherwise. | |
164 | """ | |
165 | op_handler = self._run_ops.get(operation) | |
166 | if not op_handler: | |
167 | return | |
168 | if operation == 'query-checkcurr': | |
169 | op_handler(self, ifaceobj, query_ifaceobj) | |
170 | else: | |
171 | op_handler(self, ifaceobj) |