]>
Commit | Line | Data |
---|---|---|
a6f80f0e | 1 | #!/usr/bin/python |
3e8ee54f | 2 | # |
d486dd0d | 3 | # Copyright 2014-2017 Cumulus Networks, Inc. All rights reserved. |
3e8ee54f | 4 | # Author: Roopa Prabhu, roopa@cumulusnetworks.com |
5 | # | |
6 | # ifaceScheduler -- | |
7 | # interface scheduler | |
8 | # | |
a6f80f0e | 9 | |
69f58278 | 10 | import sys |
d486dd0d | 11 | |
a9ab1b4f | 12 | from sets import Set |
a6f80f0e | 13 | |
d486dd0d JF |
14 | try: |
15 | from ifupdown2.ifupdown.graph import * | |
16 | from ifupdown2.ifupdown.ifupdownbase import * | |
17 | ||
18 | from ifupdown2.ifupdown.iface import * | |
19 | from ifupdown2.ifupdown.utils import utils | |
20 | from ifupdown2.ifupdown.statemanager import * | |
21 | ||
22 | import ifupdown2.ifupdown.ifupdownflags as ifupdownflags | |
23 | except ImportError: | |
24 | from ifupdown.graph import * | |
25 | from ifupdown.ifupdownbase import * | |
26 | ||
27 | from ifupdown.iface import * | |
28 | from ifupdown.utils import utils | |
29 | from ifupdown.statemanager import * | |
30 | ||
31 | import ifupdown.ifupdownflags as ifupdownflags | |
32 | ||
33 | ||
d08d5f54 | 34 | class ifaceSchedulerFlags(): |
904908bc RP |
35 | """ Enumerates scheduler flags """ |
36 | ||
c798b0f4 | 37 | INORDER = 0x1 |
38 | POSTORDER = 0x2 | |
d08d5f54 | 39 | |
be0b20f2 | 40 | class ifaceScheduler(): |
41 | """ scheduler functions to schedule configuration of interfaces. | |
a6f80f0e | 42 | |
a6f80f0e | 43 | supports scheduling of interfaces serially in plain interface list |
44 | or dependency graph format. | |
99b212b0 | 45 | |
a6f80f0e | 46 | """ |
47 | ||
c798b0f4 | 48 | _STATE_CHECK = True |
49 | ||
2009513f RP |
50 | _SCHED_STATUS = True |
51 | ||
d486dd0d JF |
52 | @classmethod |
53 | def reset(cls): | |
54 | cls._STATE_CHECK = True | |
55 | cls._SCHED_STATUS = True | |
56 | ||
2009513f RP |
57 | @classmethod |
58 | def get_sched_status(cls): | |
59 | return cls._SCHED_STATUS | |
5973036b | 60 | |
892c495e RP |
61 | @classmethod |
62 | def set_sched_status(cls, state): | |
63 | cls._SCHED_STATUS = state | |
64 | ||
be0b20f2 | 65 | @classmethod |
6e16e5ae | 66 | def run_iface_op(cls, ifupdownobj, ifaceobj, op, cenv=None): |
a6f80f0e | 67 | """ Runs sub operation on an interface """ |
62ddec8b | 68 | ifacename = ifaceobj.name |
a6f80f0e | 69 | |
3e6ea735 | 70 | if ifupdownobj.type and ifupdownobj.type != ifaceobj.type: |
2da58137 RP |
71 | return |
72 | ||
dbc018d3 | 73 | if not ifupdownobj.flags.ADDONS_ENABLE: return |
44a6ca06 RP |
74 | if op == 'query-checkcurr': |
75 | query_ifaceobj=ifupdownobj.create_n_save_ifaceobjcurr(ifaceobj) | |
16d854b4 RP |
76 | # If not type bridge vlan and the object does not exist, |
77 | # mark not found and return | |
78 | if (not ifupdownobj.link_exists(ifaceobj.name) and | |
79 | ifaceobj.type != ifaceType.BRIDGE_VLAN): | |
80 | query_ifaceobj.set_state_n_status(ifaceState.from_str(op), | |
81 | ifaceStatus.NOTFOUND) | |
82 | return | |
be0b20f2 | 83 | for mname in ifupdownobj.module_ops.get(op): |
37c0543d | 84 | m = ifupdownobj.modules.get(mname) |
a6f80f0e | 85 | err = 0 |
86 | try: | |
d08d5f54 | 87 | if hasattr(m, 'run'): |
a690dfae | 88 | msg = ('%s: %s : running module %s' %(ifacename, op, mname)) |
739f665b | 89 | if op == 'query-checkcurr': |
d486dd0d | 90 | # Dont check curr if the interface object was |
37c0543d | 91 | # auto generated |
dbc018d3 RP |
92 | if (ifaceobj.priv_flags and |
93 | ifaceobj.priv_flags.NOCONFIG): | |
37c0543d | 94 | continue |
a690dfae | 95 | ifupdownobj.logger.debug(msg) |
e1601369 | 96 | m.run(ifaceobj, op, query_ifaceobj, |
6e16e5ae | 97 | ifaceobj_getfunc=ifupdownobj.get_ifaceobjs) |
a6f80f0e | 98 | else: |
a690dfae | 99 | ifupdownobj.logger.debug(msg) |
3e6ea735 | 100 | m.run(ifaceobj, op, |
6e16e5ae | 101 | ifaceobj_getfunc=ifupdownobj.get_ifaceobjs) |
a6f80f0e | 102 | except Exception, e: |
3e6ea735 RP |
103 | if not ifupdownobj.ignore_error(str(e)): |
104 | err = 1 | |
2009513f | 105 | ifupdownobj.logger.error(str(e)) |
3e6ea735 RP |
106 | # Continue with rest of the modules |
107 | pass | |
a6f80f0e | 108 | finally: |
ca105861 | 109 | if err or ifaceobj.status == ifaceStatus.ERROR: |
31a5f4c3 | 110 | ifaceobj.set_state_n_status(ifaceState.from_str(op), |
111 | ifaceStatus.ERROR) | |
2009513f | 112 | if 'up' in op or 'down' in op or 'query-checkcurr' in op: |
892c495e | 113 | cls.set_sched_status(False) |
d08d5f54 | 114 | else: |
3e6ea735 RP |
115 | # Mark success only if the interface was not already |
116 | # marked with error | |
117 | status = (ifaceobj.status | |
118 | if ifaceobj.status == ifaceStatus.ERROR | |
119 | else ifaceStatus.SUCCESS) | |
31a5f4c3 | 120 | ifaceobj.set_state_n_status(ifaceState.from_str(op), |
3e6ea735 | 121 | status) |
6bd7fc74 | 122 | |
ee3fcf44 | 123 | if ifupdownobj.config.get('addon_scripts_support', '0') == '1': |
d486dd0d | 124 | # execute /etc/network/ scripts |
ca2ec1ac GS |
125 | os.environ['IFACE'] = ifaceobj.name if ifaceobj.name else '' |
126 | os.environ['LOGICAL'] = ifaceobj.name if ifaceobj.name else '' | |
127 | os.environ['METHOD'] = ifaceobj.addr_method if ifaceobj.addr_method else '' | |
128 | os.environ['ADDRFAM'] = ','.join(ifaceobj.addr_family) if ifaceobj.addr_family else '' | |
6bd7fc74 | 129 | for mname in ifupdownobj.script_ops.get(op, []): |
130 | ifupdownobj.logger.debug('%s: %s : running script %s' | |
d08d5f54 | 131 | %(ifacename, op, mname)) |
6bd7fc74 | 132 | try: |
a193d8d1 | 133 | utils.exec_command(mname, env=cenv) |
6bd7fc74 | 134 | except Exception, e: |
a193d8d1 | 135 | ifupdownobj.log_error('%s: %s %s' % (ifacename, op, str(e))) |
37c0543d | 136 | |
be0b20f2 | 137 | @classmethod |
6e16e5ae | 138 | def run_iface_list_ops(cls, ifupdownobj, ifaceobjs, ops): |
923290bd | 139 | """ Runs all operations on a list of interface |
140 | configurations for the same interface | |
141 | """ | |
a070c90e | 142 | |
a690dfae | 143 | # minor optimization. If operation is 'down', proceed only |
144 | # if interface exists in the system | |
923290bd | 145 | ifacename = ifaceobjs[0].name |
8c13865c | 146 | ifupdownobj.logger.info('%s: running ops ...' %ifacename) |
16d854b4 RP |
147 | if ('down' in ops[0] and |
148 | ifaceobjs[0].type != ifaceType.BRIDGE_VLAN and | |
923290bd | 149 | not ifupdownobj.link_exists(ifacename)): |
525f0a30 | 150 | ifupdownobj.logger.debug('%s: does not exist' %ifacename) |
923290bd | 151 | # run posthook before you get out of here, so that |
152 | # appropriate cleanup is done | |
153 | posthookfunc = ifupdownobj.sched_hooks.get('posthook') | |
154 | if posthookfunc: | |
155 | for ifaceobj in ifaceobjs: | |
156 | ifaceobj.status = ifaceStatus.SUCCESS | |
157 | posthookfunc(ifupdownobj, ifaceobj, 'down') | |
d486dd0d | 158 | return |
923290bd | 159 | for op in ops: |
160 | # first run ifupdownobj handlers. This is good enough | |
161 | # for the first object in the list | |
162 | handler = ifupdownobj.ops_handlers.get(op) | |
163 | if handler: | |
a070c90e RP |
164 | try: |
165 | handler(ifupdownobj, ifaceobjs[0]) | |
166 | except Exception, e: | |
61c4d724 RP |
167 | if not ifupdownobj.link_master_slave_ignore_error(str(e)): |
168 | ifupdownobj.logger.warn('%s: %s' | |
169 | %(ifaceobjs[0].name, str(e))) | |
a070c90e | 170 | pass |
923290bd | 171 | for ifaceobj in ifaceobjs: |
6e16e5ae | 172 | cls.run_iface_op(ifupdownobj, ifaceobj, op, |
923290bd | 173 | cenv=ifupdownobj.generate_running_env(ifaceobj, op) |
ee3fcf44 RP |
174 | if ifupdownobj.config.get('addon_scripts_support', |
175 | '0') == '1' else None) | |
176 | posthookfunc = ifupdownobj.sched_hooks.get('posthook') | |
177 | if posthookfunc: | |
40ed8c4d RP |
178 | try: |
179 | [posthookfunc(ifupdownobj, ifaceobj, ops[0]) | |
180 | for ifaceobj in ifaceobjs] | |
181 | except Exception, e: | |
182 | ifupdownobj.logger.warn('%s' %str(e)) | |
183 | pass | |
21c7daa7 | 184 | |
185 | @classmethod | |
fa3da4be | 186 | def _check_upperifaces(cls, ifupdownobj, ifaceobj, ops, parent, |
187 | followdependents=False): | |
99b212b0 | 188 | """ Check if upperifaces are hanging off us and help caller decide |
189 | if he can proceed with the ops on this device | |
21c7daa7 | 190 | |
99b212b0 | 191 | Returns True or False indicating the caller to proceed with the |
192 | operation. | |
193 | """ | |
86fc62e2 | 194 | # proceed only for down operation |
195 | if 'down' not in ops[0]: | |
196 | return True | |
197 | ||
dbc018d3 RP |
198 | if (ifupdownobj.flags.SCHED_SKIP_CHECK_UPPERIFACES): |
199 | return True | |
200 | ||
fc5e1735 | 201 | if (ifupdownflags.flags.FORCE or |
dbc018d3 | 202 | not ifupdownobj.flags.ADDONS_ENABLE or |
86fc62e2 | 203 | (not ifupdownobj.is_ifaceobj_noconfig(ifaceobj) and |
33e106da | 204 | ifupdownobj.config.get('warn_on_ifdown', '0') == '0' and |
d2b35716 | 205 | not ifupdownflags.flags.ALL)): |
99b212b0 | 206 | return True |
65c48517 | 207 | |
62ddec8b | 208 | ulist = ifaceobj.upperifaces |
99b212b0 | 209 | if not ulist: |
210 | return True | |
33e106da | 211 | |
99b212b0 | 212 | # Get the list of upper ifaces other than the parent |
213 | tmpulist = ([u for u in ulist if u != parent] if parent | |
214 | else ulist) | |
215 | if not tmpulist: | |
216 | return True | |
217 | # XXX: This is expensive. Find a cheaper way to do this. | |
218 | # if any of the upperdevs are present, | |
219 | # return false to the caller to skip this interface | |
220 | for u in tmpulist: | |
221 | if ifupdownobj.link_exists(u): | |
d2b35716 | 222 | if not ifupdownflags.flags.ALL: |
86fc62e2 | 223 | if ifupdownobj.is_ifaceobj_noconfig(ifaceobj): |
224 | ifupdownobj.logger.info('%s: skipping interface down,' | |
225 | %ifaceobj.name + ' upperiface %s still around ' %u) | |
226 | else: | |
227 | ifupdownobj.logger.warn('%s: skipping interface down,' | |
228 | %ifaceobj.name + ' upperiface %s still around ' %u) | |
99b212b0 | 229 | return False |
21c7daa7 | 230 | return True |
231 | ||
be0b20f2 | 232 | @classmethod |
6e16e5ae N |
233 | def run_iface_graph(cls, ifupdownobj, ifacename, ops, parent=None, |
234 | order=ifaceSchedulerFlags.POSTORDER, | |
d08d5f54 | 235 | followdependents=True): |
6ef5bfa2 | 236 | """ runs interface by traversing all nodes rooted at itself """ |
237 | ||
d08d5f54 | 238 | # Each ifacename can have a list of iface objects |
31a5f4c3 | 239 | ifaceobjs = ifupdownobj.get_ifaceobjs(ifacename) |
240 | if not ifaceobjs: | |
d08d5f54 | 241 | raise Exception('%s: not found' %ifacename) |
a6f80f0e | 242 | |
a070c90e RP |
243 | # Check state of the dependent. If it is already brought up, return |
244 | if (cls._STATE_CHECK and | |
245 | (ifaceobjs[0].state == ifaceState.from_str(ops[-1]))): | |
246 | ifupdownobj.logger.debug('%s: already processed' %ifacename) | |
247 | return | |
248 | ||
d08d5f54 | 249 | for ifaceobj in ifaceobjs: |
ca3f4fc7 | 250 | if not cls._check_upperifaces(ifupdownobj, ifaceobj, |
251 | ops, parent, followdependents): | |
a070c90e | 252 | return |
f3215127 | 253 | |
923290bd | 254 | # If inorder, run the iface first and then its dependents |
255 | if order == ifaceSchedulerFlags.INORDER: | |
6e16e5ae | 256 | cls.run_iface_list_ops(ifupdownobj, ifaceobjs, ops) |
923290bd | 257 | |
258 | for ifaceobj in ifaceobjs: | |
f3215127 | 259 | # Run lowerifaces or dependents |
62ddec8b | 260 | dlist = ifaceobj.lowerifaces |
f3215127 | 261 | if dlist: |
fa3da4be | 262 | ifupdownobj.logger.debug('%s: found dependents %s' |
263 | %(ifacename, str(dlist))) | |
d08d5f54 | 264 | try: |
265 | if not followdependents: | |
266 | # XXX: this is yet another extra step, | |
267 | # but is needed for interfaces that are | |
f3215127 | 268 | # implicit dependents. even though we are asked to |
269 | # not follow dependents, we must follow the ones | |
270 | # that dont have user given config. Because we own them | |
d08d5f54 | 271 | new_dlist = [d for d in dlist |
923290bd | 272 | if ifupdownobj.is_iface_noconfig(d)] |
6ef5bfa2 | 273 | if new_dlist: |
be0b20f2 | 274 | cls.run_iface_list(ifupdownobj, new_dlist, ops, |
6e16e5ae | 275 | ifacename, order, followdependents, |
923290bd | 276 | continueonfailure=False) |
d08d5f54 | 277 | else: |
be0b20f2 | 278 | cls.run_iface_list(ifupdownobj, dlist, ops, |
6e16e5ae | 279 | ifacename, order, |
f3215127 | 280 | followdependents, |
6ef5bfa2 | 281 | continueonfailure=False) |
d08d5f54 | 282 | except Exception, e: |
be0b20f2 | 283 | if (ifupdownobj.ignore_error(str(e))): |
d08d5f54 | 284 | pass |
285 | else: | |
286 | # Dont bring the iface up if children did not come up | |
a690dfae | 287 | ifaceobj.set_state_n_status(ifaceState.NEW, |
923290bd | 288 | ifaceStatus.ERROR) |
d08d5f54 | 289 | raise |
923290bd | 290 | if order == ifaceSchedulerFlags.POSTORDER: |
6e16e5ae | 291 | cls.run_iface_list_ops(ifupdownobj, ifaceobjs, ops) |
a6f80f0e | 292 | |
be0b20f2 | 293 | @classmethod |
6e16e5ae N |
294 | def run_iface_list(cls, ifupdownobj, ifacenames, |
295 | ops, parent=None, order=ifaceSchedulerFlags.POSTORDER, | |
6ef5bfa2 | 296 | followdependents=True, continueonfailure=True): |
d08d5f54 | 297 | """ Runs interface list """ |
6e16e5ae | 298 | |
d08d5f54 | 299 | for ifacename in ifacenames: |
a6f80f0e | 300 | try: |
6e16e5ae N |
301 | cls.run_iface_graph(ifupdownobj, ifacename, ops, parent, |
302 | order, followdependents) | |
a6f80f0e | 303 | except Exception, e: |
6ef5bfa2 | 304 | if continueonfailure: |
69f58278 | 305 | if ifupdownobj.logger.isEnabledFor(logging.DEBUG): |
306 | traceback.print_tb(sys.exc_info()[2]) | |
be0b20f2 | 307 | ifupdownobj.logger.error('%s : %s' %(ifacename, str(e))) |
d08d5f54 | 308 | pass |
309 | else: | |
be0b20f2 | 310 | if (ifupdownobj.ignore_error(str(e))): |
6ef5bfa2 | 311 | pass |
312 | else: | |
9dce3561 | 313 | raise Exception('%s : (%s)' %(ifacename, str(e))) |
d08d5f54 | 314 | |
be0b20f2 | 315 | @classmethod |
c798b0f4 | 316 | def run_iface_graph_upper(cls, ifupdownobj, ifacename, ops, parent=None, |
317 | followdependents=True, skip_root=False): | |
318 | """ runs interface by traversing all nodes rooted at itself """ | |
319 | ||
320 | # Each ifacename can have a list of iface objects | |
321 | ifaceobjs = ifupdownobj.get_ifaceobjs(ifacename) | |
322 | if not ifaceobjs: | |
323 | raise Exception('%s: not found' %ifacename) | |
324 | ||
a070c90e RP |
325 | if (cls._STATE_CHECK and |
326 | (ifaceobjs[0].state == ifaceState.from_str(ops[-1]))): | |
327 | ifupdownobj.logger.debug('%s: already processed' %ifacename) | |
328 | return | |
329 | ||
923290bd | 330 | if not skip_root: |
331 | # run the iface first and then its upperifaces | |
6e16e5ae | 332 | cls.run_iface_list_ops(ifupdownobj, ifaceobjs, ops) |
c798b0f4 | 333 | for ifaceobj in ifaceobjs: |
c798b0f4 | 334 | # Run upperifaces |
62ddec8b | 335 | ulist = ifaceobj.upperifaces |
c798b0f4 | 336 | if ulist: |
fa3da4be | 337 | ifupdownobj.logger.debug('%s: found upperifaces %s' |
338 | %(ifacename, str(ulist))) | |
c798b0f4 | 339 | try: |
340 | cls.run_iface_list_upper(ifupdownobj, ulist, ops, | |
341 | ifacename, | |
342 | followdependents, | |
343 | continueonfailure=True) | |
344 | except Exception, e: | |
345 | if (ifupdownobj.ignore_error(str(e))): | |
346 | pass | |
347 | else: | |
348 | raise | |
349 | ||
350 | @classmethod | |
351 | def run_iface_list_upper(cls, ifupdownobj, ifacenames, | |
352 | ops, parent=None, followdependents=True, | |
353 | continueonfailure=True, skip_root=False): | |
354 | """ Runs interface list """ | |
355 | ||
356 | for ifacename in ifacenames: | |
357 | try: | |
358 | cls.run_iface_graph_upper(ifupdownobj, ifacename, ops, parent, | |
359 | followdependents, skip_root) | |
360 | except Exception, e: | |
09a304ca RP |
361 | if ifupdownobj.logger.isEnabledFor(logging.DEBUG): |
362 | traceback.print_tb(sys.exc_info()[2]) | |
363 | ifupdownobj.logger.warn('%s : %s' %(ifacename, str(e))) | |
364 | pass | |
c798b0f4 | 365 | |
a9ab1b4f RP |
366 | @classmethod |
367 | def _get_valid_upperifaces(cls, ifupdownobj, ifacenames, | |
368 | allupperifacenames): | |
369 | """ Recursively find valid upperifaces | |
370 | ||
371 | valid upperifaces are: | |
372 | - An upperiface which had no user config (example builtin | |
373 | interfaces. usually vlan interfaces.) | |
374 | - or had config and previously up | |
375 | - and interface currently does not exist | |
376 | - or is a bridge (because if your upperiface was a bridge | |
377 | - u will have to execute up on the bridge | |
378 | to enslave the port and apply bridge attributes to the port) """ | |
379 | ||
380 | upperifacenames = [] | |
381 | for ifacename in ifacenames: | |
382 | # get upperifaces | |
383 | ifaceobj = ifupdownobj.get_ifaceobj_first(ifacename) | |
384 | if not ifaceobj: | |
385 | continue | |
386 | ulist = Set(ifaceobj.upperifaces).difference(upperifacenames) | |
387 | nulist = [] | |
388 | for u in ulist: | |
389 | uifaceobj = ifupdownobj.get_ifaceobj_first(u) | |
390 | if not uifaceobj: | |
391 | continue | |
dbc018d3 RP |
392 | has_config = not (uifaceobj.priv_flags and |
393 | uifaceobj.priv_flags.NOCONFIG) | |
a9ab1b4f RP |
394 | if (((has_config and ifupdownobj.get_ifaceobjs_saved(u)) or |
395 | not has_config) and (not ifupdownobj.link_exists(u) | |
65e0c276 RP |
396 | # Do this always for a bridge. Note that this is |
397 | # not done for a vlan aware bridge because, | |
398 | # in the vlan aware bridge case, the bridge module | |
399 | # applies the bridge port configuration on the port | |
400 | # when up is scheduled on the port. | |
401 | or (uifaceobj.link_kind == ifaceLinkKind.BRIDGE))): | |
a9ab1b4f RP |
402 | nulist.append(u) |
403 | upperifacenames.extend(nulist) | |
404 | allupperifacenames.extend(upperifacenames) | |
405 | if upperifacenames: | |
406 | cls._get_valid_upperifaces(ifupdownobj, upperifacenames, | |
407 | allupperifacenames) | |
408 | return | |
409 | ||
410 | @classmethod | |
411 | def run_upperifaces(cls, ifupdownobj, ifacenames, ops, | |
412 | continueonfailure=True): | |
d486dd0d | 413 | """ Run through valid upperifaces """ |
a9ab1b4f RP |
414 | upperifaces = [] |
415 | ||
416 | cls._get_valid_upperifaces(ifupdownobj, ifacenames, upperifaces) | |
417 | if not upperifaces: | |
418 | return | |
419 | # dump valid upperifaces | |
420 | ifupdownobj.logger.debug(upperifaces) | |
421 | for u in upperifaces: | |
422 | try: | |
423 | ifaceobjs = ifupdownobj.get_ifaceobjs(u) | |
424 | if not ifaceobjs: | |
425 | continue | |
6e16e5ae | 426 | cls.run_iface_list_ops(ifupdownobj, ifaceobjs, ops) |
a9ab1b4f RP |
427 | except Exception, e: |
428 | if continueonfailure: | |
afe51251 | 429 | ifupdownobj.logger.warn('%s' %str(e)) |
a9ab1b4f | 430 | |
54ebaf3e RP |
431 | @classmethod |
432 | def _dump_dependency_info(cls, ifupdownobj, ifacenames, | |
433 | dependency_graph=None, indegrees=None): | |
434 | ifupdownobj.logger.info('{\n') | |
435 | ifupdownobj.logger.info('\nifaceobjs:') | |
436 | for iname in ifacenames: | |
437 | iobjs = ifupdownobj.get_ifaceobjs(iname) | |
438 | for iobj in iobjs: | |
439 | iobj.dump(ifupdownobj.logger) | |
440 | if (dependency_graph): | |
441 | ifupdownobj.logger.info('\nDependency Graph:') | |
442 | ifupdownobj.logger.info(dependency_graph) | |
443 | if (indegrees): | |
444 | ifupdownobj.logger.info('\nIndegrees:') | |
445 | ifupdownobj.logger.info(indegrees) | |
446 | ifupdownobj.logger.info('}\n') | |
447 | ||
5ee3e1a8 RP |
448 | @classmethod |
449 | def get_sorted_iface_list(cls, ifupdownobj, ifacenames, ops, | |
450 | dependency_graph, indegrees=None): | |
451 | if len(ifacenames) == 1: | |
452 | return ifacenames | |
453 | # Get a sorted list of all interfaces | |
454 | if not indegrees: | |
455 | indegrees = OrderedDict() | |
456 | for ifacename in dependency_graph.keys(): | |
457 | indegrees[ifacename] = ifupdownobj.get_iface_refcnt(ifacename) | |
54ebaf3e RP |
458 | |
459 | #cls._dump_dependency_info(ifupdownobj, ifacenames, | |
460 | # dependency_graph, indegrees) | |
461 | ||
5ee3e1a8 RP |
462 | ifacenames_all_sorted = graph.topological_sort_graphs_all( |
463 | dependency_graph, indegrees) | |
464 | # if ALL was set, return all interfaces | |
d2b35716 | 465 | if ifupdownflags.flags.ALL: |
5ee3e1a8 RP |
466 | return ifacenames_all_sorted |
467 | ||
468 | # else return ifacenames passed as argument in sorted order | |
469 | ifacenames_sorted = [] | |
470 | [ifacenames_sorted.append(ifacename) | |
471 | for ifacename in ifacenames_all_sorted | |
472 | if ifacename in ifacenames] | |
473 | return ifacenames_sorted | |
474 | ||
c798b0f4 | 475 | @classmethod |
6e16e5ae | 476 | def sched_ifaces(cls, ifupdownobj, ifacenames, ops, |
c798b0f4 | 477 | dependency_graph=None, indegrees=None, |
d08d5f54 | 478 | order=ifaceSchedulerFlags.POSTORDER, |
e308cb82 | 479 | followdependents=True, skipupperifaces=False, sort=False): |
2c0ad8b3 RP |
480 | """ runs interface configuration modules on interfaces passed as |
481 | argument. Runs topological sort on interface dependency graph. | |
482 | ||
483 | Args: | |
d486dd0d | 484 | **ifupdownobj** (object): ifupdownMain object |
904908bc RP |
485 | |
486 | **ifacenames** (list): list of interface names | |
487 | ||
488 | **ops** : list of operations to perform eg ['pre-up', 'up', 'post-up'] | |
489 | ||
490 | **dependency_graph** (dict): dependency graph in adjacency list format | |
2c0ad8b3 RP |
491 | |
492 | Kwargs: | |
904908bc RP |
493 | **indegrees** (dict): indegree array of the dependency graph |
494 | ||
495 | **order** (int): ifaceSchedulerFlags (POSTORDER, INORDER) | |
496 | ||
497 | **followdependents** (bool): follow dependent interfaces if true | |
2c0ad8b3 | 498 | |
e308cb82 RP |
499 | **sort** (bool): sort ifacelist in the case where ALL is not set |
500 | ||
d08d5f54 | 501 | """ |
5ee3e1a8 RP |
502 | # |
503 | # Algo: | |
504 | # if ALL/auto interfaces are specified, | |
505 | # - walk the dependency tree in postorder or inorder depending | |
506 | # on the operation. | |
507 | # (This is to run interfaces correctly in order) | |
508 | # else: | |
509 | # - sort iface list if the ifaces belong to a "class" | |
510 | # - else just run iface list in the order they were specified | |
511 | # | |
512 | # Run any upperifaces if available | |
513 | # | |
8c13865c | 514 | followupperifaces = False |
5ee3e1a8 RP |
515 | run_queue = [] |
516 | skip_ifacesort = int(ifupdownobj.config.get('skip_ifacesort', '0')) | |
517 | if not skip_ifacesort and not indegrees: | |
518 | indegrees = OrderedDict() | |
519 | for ifacename in dependency_graph.keys(): | |
520 | indegrees[ifacename] = ifupdownobj.get_iface_refcnt(ifacename) | |
c798b0f4 | 521 | |
d2b35716 | 522 | if not ifupdownflags.flags.ALL: |
e308cb82 RP |
523 | if 'up' in ops[0]: |
524 | # If there is any interface that does not exist, maybe it | |
525 | # is a logical interface and we have to followupperifaces | |
526 | # when it comes up, so lets get that list. | |
527 | if any([True for i in ifacenames | |
528 | if ifupdownobj.must_follow_upperifaces(i)]): | |
529 | followupperifaces = (True if | |
ca3f4fc7 | 530 | [i for i in ifacenames |
923290bd | 531 | if not ifupdownobj.link_exists(i)] |
532 | else False) | |
e308cb82 RP |
533 | # sort interfaces only if the caller asked to sort |
534 | # and skip_ifacesort is not on. | |
535 | if not skip_ifacesort and sort: | |
5ee3e1a8 RP |
536 | run_queue = cls.get_sorted_iface_list(ifupdownobj, ifacenames, |
537 | ops, dependency_graph, indegrees) | |
538 | if run_queue and 'up' in ops[0]: | |
539 | run_queue.reverse() | |
ba7b1d60 | 540 | else: |
e308cb82 RP |
541 | # if -a is set, we pick the interfaces |
542 | # that have no parents and use a sorted list of those | |
5ee3e1a8 RP |
543 | if not skip_ifacesort: |
544 | sorted_ifacenames = cls.get_sorted_iface_list(ifupdownobj, | |
545 | ifacenames, ops, dependency_graph, | |
546 | indegrees) | |
547 | if sorted_ifacenames: | |
548 | # pick interfaces that user asked | |
549 | # and those that dont have any dependents first | |
550 | [run_queue.append(ifacename) | |
551 | for ifacename in sorted_ifacenames | |
552 | if ifacename in ifacenames and | |
553 | not indegrees.get(ifacename)] | |
554 | ifupdownobj.logger.debug('graph roots (interfaces that ' + | |
555 | 'dont have dependents):' + ' %s' %str(run_queue)) | |
556 | else: | |
557 | ifupdownobj.logger.warn('interface sort returned None') | |
558 | ||
e308cb82 RP |
559 | # If queue not present, just run interfaces that were asked by the |
560 | # user | |
5ee3e1a8 RP |
561 | if not run_queue: |
562 | run_queue = list(ifacenames) | |
e308cb82 RP |
563 | # if we are taking the order of interfaces as specified |
564 | # in the interfaces file, we should reverse the list if we | |
565 | # want to down. This can happen if 'skip_ifacesort' | |
566 | # is been specified. | |
5ee3e1a8 RP |
567 | if 'down' in ops[0]: |
568 | run_queue.reverse() | |
569 | ||
570 | # run interface list | |
6e16e5ae | 571 | cls.run_iface_list(ifupdownobj, run_queue, ops, |
5ee3e1a8 RP |
572 | parent=None, order=order, |
573 | followdependents=followdependents) | |
892c495e | 574 | if not cls.get_sched_status(): |
2009513f | 575 | return |
09a304ca | 576 | |
ad25e7bb RP |
577 | if (not skipupperifaces and |
578 | ifupdownobj.config.get('skip_upperifaces', '0') == '0' and | |
d2b35716 | 579 | ((not ifupdownflags.flags.ALL and followdependents) or |
d486dd0d | 580 | followupperifaces) and |
5ee3e1a8 RP |
581 | 'up' in ops[0]): |
582 | # If user had given a set of interfaces to bring up | |
583 | # try and execute 'up' on the upperifaces | |
09a304ca RP |
584 | ifupdownobj.logger.info('running upperifaces (parent interfaces) ' + |
585 | 'if available ..') | |
892c495e | 586 | try: |
3fb52fa3 RP |
587 | # upperiface bring up is best effort. |
588 | # eg case: if we are bringing up a bridge port | |
589 | # this section does an 'ifup on the bridge' | |
590 | # so that the recently up'ed bridge port gets enslaved | |
591 | # to the bridge. But the up on the bridge may | |
592 | # throw out more errors if the bridge is not | |
593 | # in the correct state. Lets not surprise | |
594 | # the user with such errors when he has | |
595 | # only requested to bring up the bridge port. | |
892c495e | 596 | cls._STATE_CHECK = False |
3fb52fa3 | 597 | ifupdownflags.flags.IGNORE_ERRORS = True |
892c495e | 598 | cls.run_upperifaces(ifupdownobj, ifacenames, ops) |
892c495e | 599 | finally: |
3fb52fa3 RP |
600 | ifupdownflags.flags.IGNORE_ERRORS = False |
601 | cls._STATE_CHECK = True | |
892c495e RP |
602 | # upperiface bringup is best effort, so dont propagate errors |
603 | # reset scheduler status to True | |
604 | cls.set_sched_status(True) |