root / lib / rpc.py @ 160e2921
History | View | Annotate | Download (25.4 kB)
1 |
#
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007 Google Inc.
|
5 |
#
|
6 |
# This program is free software; you can redistribute it and/or modify
|
7 |
# it under the terms of the GNU General Public License as published by
|
8 |
# the Free Software Foundation; either version 2 of the License, or
|
9 |
# (at your option) any later version.
|
10 |
#
|
11 |
# This program is distributed in the hope that it will be useful, but
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
# General Public License for more details.
|
15 |
#
|
16 |
# You should have received a copy of the GNU General Public License
|
17 |
# along with this program; if not, write to the Free Software
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
# 02110-1301, USA.
|
20 |
|
21 |
|
22 |
"""Inter-node RPC library.
|
23 |
|
24 |
"""
|
25 |
|
26 |
# pylint: disable-msg=C0103,R0201,R0904
|
27 |
# C0103: Invalid name, since call_ are not valid
|
28 |
# R0201: Method could be a function, we keep all rpcs instance methods
|
29 |
# as not to change them back and forth between static/instance methods
|
30 |
# if they need to start using instance attributes
|
31 |
# R0904: Too many public methods
|
32 |
|
33 |
import os |
34 |
import socket |
35 |
import httplib |
36 |
import logging |
37 |
|
38 |
from ganeti import utils |
39 |
from ganeti import objects |
40 |
from ganeti import http |
41 |
from ganeti import serializer |
42 |
from ganeti import constants |
43 |
|
44 |
|
45 |
# Module level variable
|
46 |
_http_manager = None
|
47 |
|
48 |
|
49 |
def Init(): |
50 |
"""Initializes the module-global HTTP client manager.
|
51 |
|
52 |
Must be called before using any RPC function.
|
53 |
|
54 |
"""
|
55 |
global _http_manager
|
56 |
|
57 |
assert not _http_manager, "RPC module initialized more than once" |
58 |
|
59 |
_http_manager = http.HttpClientManager() |
60 |
|
61 |
|
62 |
def Shutdown(): |
63 |
"""Stops the module-global HTTP client manager.
|
64 |
|
65 |
Must be called before quitting the program.
|
66 |
|
67 |
"""
|
68 |
global _http_manager
|
69 |
|
70 |
if _http_manager:
|
71 |
_http_manager.Shutdown() |
72 |
_http_manager = None
|
73 |
|
74 |
|
75 |
class Client: |
76 |
"""RPC Client class.
|
77 |
|
78 |
This class, given a (remote) method name, a list of parameters and a
|
79 |
list of nodes, will contact (in parallel) all nodes, and return a
|
80 |
dict of results (key: node name, value: result).
|
81 |
|
82 |
One current bug is that generic failure is still signalled by
|
83 |
'False' result, which is not good. This overloading of values can
|
84 |
cause bugs.
|
85 |
|
86 |
"""
|
87 |
def __init__(self, procedure, body, port): |
88 |
self.procedure = procedure
|
89 |
self.body = body
|
90 |
self.port = port
|
91 |
self.nc = {}
|
92 |
|
93 |
self._ssl_params = \
|
94 |
http.HttpSslParams(ssl_key_path=constants.SSL_CERT_FILE, |
95 |
ssl_cert_path=constants.SSL_CERT_FILE) |
96 |
|
97 |
def ConnectList(self, node_list, address_list=None): |
98 |
"""Add a list of nodes to the target nodes.
|
99 |
|
100 |
@type node_list: list
|
101 |
@param node_list: the list of node names to connect
|
102 |
@type address_list: list or None
|
103 |
@keyword address_list: either None or a list with node addresses,
|
104 |
which must have the same length as the node list
|
105 |
|
106 |
"""
|
107 |
if address_list is None: |
108 |
address_list = [None for _ in node_list] |
109 |
else:
|
110 |
assert len(node_list) == len(address_list), \ |
111 |
"Name and address lists should have the same length"
|
112 |
for node, address in zip(node_list, address_list): |
113 |
self.ConnectNode(node, address)
|
114 |
|
115 |
def ConnectNode(self, name, address=None): |
116 |
"""Add a node to the target list.
|
117 |
|
118 |
@type name: str
|
119 |
@param name: the node name
|
120 |
@type address: str
|
121 |
@keyword address: the node address, if known
|
122 |
|
123 |
"""
|
124 |
if address is None: |
125 |
address = name |
126 |
|
127 |
self.nc[name] = http.HttpClientRequest(address, self.port, http.HTTP_PUT, |
128 |
"/%s" % self.procedure, |
129 |
post_data=self.body,
|
130 |
ssl_params=self._ssl_params,
|
131 |
ssl_verify_peer=True)
|
132 |
|
133 |
def GetResults(self): |
134 |
"""Call nodes and return results.
|
135 |
|
136 |
@rtype: list
|
137 |
@returns: List of RPC results
|
138 |
|
139 |
"""
|
140 |
assert _http_manager, "RPC module not intialized" |
141 |
|
142 |
_http_manager.ExecRequests(self.nc.values())
|
143 |
|
144 |
results = {} |
145 |
|
146 |
for name, req in self.nc.iteritems(): |
147 |
if req.success and req.resp_status == http.HTTP_OK: |
148 |
results[name] = serializer.LoadJson(req.resp_body) |
149 |
continue
|
150 |
|
151 |
# TODO: Better error reporting
|
152 |
if req.error:
|
153 |
msg = req.error |
154 |
else:
|
155 |
msg = req.resp_body |
156 |
|
157 |
logging.error("RPC error from node %s: %s", name, msg)
|
158 |
results[name] = False
|
159 |
|
160 |
return results
|
161 |
|
162 |
|
163 |
class RpcRunner(object): |
164 |
"""RPC runner class"""
|
165 |
|
166 |
def __init__(self, cfg): |
167 |
"""Initialized the rpc runner.
|
168 |
|
169 |
@type cfg: C{config.ConfigWriter}
|
170 |
@param cfg: the configuration object that will be used to get data
|
171 |
about the cluster
|
172 |
|
173 |
"""
|
174 |
self._cfg = cfg
|
175 |
self.port = utils.GetNodeDaemonPort()
|
176 |
|
177 |
def _InstDict(self, instance): |
178 |
"""Convert the given instance to a dict.
|
179 |
|
180 |
This is done via the instance's ToDict() method and additionally
|
181 |
we fill the hvparams with the cluster defaults.
|
182 |
|
183 |
@type instance: L{objects.Instance}
|
184 |
@param instance: an Instance object
|
185 |
@rtype: dict
|
186 |
@return: the instance dict, with the hvparams filled with the
|
187 |
cluster defaults
|
188 |
|
189 |
"""
|
190 |
idict = instance.ToDict() |
191 |
cluster = self._cfg.GetClusterInfo()
|
192 |
idict["hvparams"] = cluster.FillHV(instance)
|
193 |
idict["beparams"] = cluster.FillBE(instance)
|
194 |
return idict
|
195 |
|
196 |
def _ConnectList(self, client, node_list): |
197 |
"""Helper for computing node addresses.
|
198 |
|
199 |
@type client: L{Client}
|
200 |
@param client: a C{Client} instance
|
201 |
@type node_list: list
|
202 |
@param node_list: the node list we should connect
|
203 |
|
204 |
"""
|
205 |
all_nodes = self._cfg.GetAllNodesInfo()
|
206 |
addr_list = [] |
207 |
for node in node_list: |
208 |
if node in all_nodes: |
209 |
val = all_nodes[node].primary_ip |
210 |
else:
|
211 |
val = None
|
212 |
addr_list.append(val) |
213 |
client.ConnectList(node_list, address_list=addr_list) |
214 |
|
215 |
def _ConnectNode(self, client, node): |
216 |
"""Helper for computing one node's address.
|
217 |
|
218 |
@type client: L{Client}
|
219 |
@param client: a C{Client} instance
|
220 |
@type node: str
|
221 |
@param node: the node we should connect
|
222 |
|
223 |
"""
|
224 |
node_info = self._cfg.GetNodeInfo(node)
|
225 |
if node_info is not None: |
226 |
addr = node_info.primary_ip |
227 |
else:
|
228 |
addr = None
|
229 |
client.ConnectNode(node, address=addr) |
230 |
|
231 |
def _MultiNodeCall(self, node_list, procedure, args, |
232 |
address_list=None):
|
233 |
"""Helper for making a multi-node call
|
234 |
|
235 |
"""
|
236 |
body = serializer.DumpJson(args, indent=False)
|
237 |
c = Client(procedure, body, self.port)
|
238 |
if address_list is None: |
239 |
self._ConnectList(c, node_list)
|
240 |
else:
|
241 |
c.ConnectList(node_list, address_list=address_list) |
242 |
return c.GetResults()
|
243 |
|
244 |
@classmethod
|
245 |
def _StaticMultiNodeCall(cls, node_list, procedure, args, |
246 |
address_list=None):
|
247 |
"""Helper for making a multi-node static call
|
248 |
|
249 |
"""
|
250 |
body = serializer.DumpJson(args, indent=False)
|
251 |
c = Client(procedure, body, utils.GetNodeDaemonPort()) |
252 |
c.ConnectList(node_list, address_list=address_list) |
253 |
return c.GetResults()
|
254 |
|
255 |
def _SingleNodeCall(self, node, procedure, args): |
256 |
"""Helper for making a single-node call
|
257 |
|
258 |
"""
|
259 |
body = serializer.DumpJson(args, indent=False)
|
260 |
c = Client(procedure, body, self.port)
|
261 |
self._ConnectNode(c, node)
|
262 |
return c.GetResults().get(node, False) |
263 |
|
264 |
@classmethod
|
265 |
def _StaticSingleNodeCall(cls, node, procedure, args): |
266 |
"""Helper for making a single-node static call
|
267 |
|
268 |
"""
|
269 |
body = serializer.DumpJson(args, indent=False)
|
270 |
c = Client(procedure, body, utils.GetNodeDaemonPort()) |
271 |
c.ConnectNode(c, node) |
272 |
return c.GetResults().get(node, False) |
273 |
|
274 |
def call_volume_list(self, node_list, vg_name): |
275 |
"""Gets the logical volumes present in a given volume group.
|
276 |
|
277 |
This is a multi-node call.
|
278 |
|
279 |
"""
|
280 |
return self._MultiNodeCall(node_list, "volume_list", [vg_name]) |
281 |
|
282 |
def call_vg_list(self, node_list): |
283 |
"""Gets the volume group list.
|
284 |
|
285 |
This is a multi-node call.
|
286 |
|
287 |
"""
|
288 |
return self._MultiNodeCall(node_list, "vg_list", []) |
289 |
|
290 |
def call_bridges_exist(self, node, bridges_list): |
291 |
"""Checks if a node has all the bridges given.
|
292 |
|
293 |
This method checks if all bridges given in the bridges_list are
|
294 |
present on the remote node, so that an instance that uses interfaces
|
295 |
on those bridges can be started.
|
296 |
|
297 |
This is a single-node call.
|
298 |
|
299 |
"""
|
300 |
return self._SingleNodeCall(node, "bridges_exist", [bridges_list]) |
301 |
|
302 |
def call_instance_start(self, node, instance, extra_args): |
303 |
"""Starts an instance.
|
304 |
|
305 |
This is a single-node call.
|
306 |
|
307 |
"""
|
308 |
return self._SingleNodeCall(node, "instance_start", |
309 |
[self._InstDict(instance), extra_args])
|
310 |
|
311 |
def call_instance_shutdown(self, node, instance): |
312 |
"""Stops an instance.
|
313 |
|
314 |
This is a single-node call.
|
315 |
|
316 |
"""
|
317 |
return self._SingleNodeCall(node, "instance_shutdown", |
318 |
[self._InstDict(instance)])
|
319 |
|
320 |
def call_instance_migrate(self, node, instance, target, live): |
321 |
"""Migrate an instance.
|
322 |
|
323 |
This is a single-node call.
|
324 |
|
325 |
@type node: string
|
326 |
@param node: the node on which the instance is currently running
|
327 |
@type instance: C{objects.Instance}
|
328 |
@param instance: the instance definition
|
329 |
@type target: string
|
330 |
@param target: the target node name
|
331 |
@type live: boolean
|
332 |
@param live: whether the migration should be done live or not (the
|
333 |
interpretation of this parameter is left to the hypervisor)
|
334 |
|
335 |
"""
|
336 |
return self._SingleNodeCall(node, "instance_migrate", |
337 |
[self._InstDict(instance), target, live])
|
338 |
|
339 |
def call_instance_reboot(self, node, instance, reboot_type, extra_args): |
340 |
"""Reboots an instance.
|
341 |
|
342 |
This is a single-node call.
|
343 |
|
344 |
"""
|
345 |
return self._SingleNodeCall(node, "instance_reboot", |
346 |
[self._InstDict(instance), reboot_type,
|
347 |
extra_args]) |
348 |
|
349 |
def call_instance_os_add(self, node, inst): |
350 |
"""Installs an OS on the given instance.
|
351 |
|
352 |
This is a single-node call.
|
353 |
|
354 |
"""
|
355 |
return self._SingleNodeCall(node, "instance_os_add", |
356 |
[self._InstDict(inst)])
|
357 |
|
358 |
def call_instance_run_rename(self, node, inst, old_name): |
359 |
"""Run the OS rename script for an instance.
|
360 |
|
361 |
This is a single-node call.
|
362 |
|
363 |
"""
|
364 |
return self._SingleNodeCall(node, "instance_run_rename", |
365 |
[self._InstDict(inst), old_name])
|
366 |
|
367 |
def call_instance_info(self, node, instance, hname): |
368 |
"""Returns information about a single instance.
|
369 |
|
370 |
This is a single-node call.
|
371 |
|
372 |
@type node: list
|
373 |
@param node: the list of nodes to query
|
374 |
@type instance: string
|
375 |
@param instance: the instance name
|
376 |
@type hname: string
|
377 |
@param hname: the hypervisor type of the instance
|
378 |
|
379 |
"""
|
380 |
return self._SingleNodeCall(node, "instance_info", [instance, hname]) |
381 |
|
382 |
def call_all_instances_info(self, node_list, hypervisor_list): |
383 |
"""Returns information about all instances on the given nodes.
|
384 |
|
385 |
This is a multi-node call.
|
386 |
|
387 |
@type node_list: list
|
388 |
@param node_list: the list of nodes to query
|
389 |
@type hypervisor_list: list
|
390 |
@param hypervisor_list: the hypervisors to query for instances
|
391 |
|
392 |
"""
|
393 |
return self._MultiNodeCall(node_list, "all_instances_info", |
394 |
[hypervisor_list]) |
395 |
|
396 |
def call_instance_list(self, node_list, hypervisor_list): |
397 |
"""Returns the list of running instances on a given node.
|
398 |
|
399 |
This is a multi-node call.
|
400 |
|
401 |
@type node_list: list
|
402 |
@param node_list: the list of nodes to query
|
403 |
@type hypervisor_list: list
|
404 |
@param hypervisor_list: the hypervisors to query for instances
|
405 |
|
406 |
"""
|
407 |
return self._MultiNodeCall(node_list, "instance_list", [hypervisor_list]) |
408 |
|
409 |
def call_node_tcp_ping(self, node, source, target, port, timeout, |
410 |
live_port_needed): |
411 |
"""Do a TcpPing on the remote node
|
412 |
|
413 |
This is a single-node call.
|
414 |
|
415 |
"""
|
416 |
return self._SingleNodeCall(node, "node_tcp_ping", |
417 |
[source, target, port, timeout, |
418 |
live_port_needed]) |
419 |
|
420 |
def call_node_has_ip_address(self, node, address): |
421 |
"""Checks if a node has the given IP address.
|
422 |
|
423 |
This is a single-node call.
|
424 |
|
425 |
"""
|
426 |
return self._SingleNodeCall(node, "node_has_ip_address", [address]) |
427 |
|
428 |
def call_node_info(self, node_list, vg_name, hypervisor_type): |
429 |
"""Return node information.
|
430 |
|
431 |
This will return memory information and volume group size and free
|
432 |
space.
|
433 |
|
434 |
This is a multi-node call.
|
435 |
|
436 |
@type node_list: list
|
437 |
@param node_list: the list of nodes to query
|
438 |
@type vgname: C{string}
|
439 |
@param vgname: the name of the volume group to ask for disk space
|
440 |
information
|
441 |
@type hypervisor_type: C{str}
|
442 |
@param hypervisor_type: the name of the hypervisor to ask for
|
443 |
memory information
|
444 |
|
445 |
"""
|
446 |
retux = self._MultiNodeCall(node_list, "node_info", |
447 |
[vg_name, hypervisor_type]) |
448 |
|
449 |
for node_name in retux: |
450 |
ret = retux.get(node_name, False)
|
451 |
if type(ret) != dict: |
452 |
logging.error("could not connect to node %s", node_name)
|
453 |
ret = {} |
454 |
|
455 |
utils.CheckDict(ret, { |
456 |
'memory_total' : '-', |
457 |
'memory_dom0' : '-', |
458 |
'memory_free' : '-', |
459 |
'vg_size' : 'node_unreachable', |
460 |
'vg_free' : '-', |
461 |
}, "call_node_info")
|
462 |
return retux
|
463 |
|
464 |
def call_node_add(self, node, dsa, dsapub, rsa, rsapub, ssh, sshpub): |
465 |
"""Add a node to the cluster.
|
466 |
|
467 |
This is a single-node call.
|
468 |
|
469 |
"""
|
470 |
return self._SingleNodeCall(node, "node_add", |
471 |
[dsa, dsapub, rsa, rsapub, ssh, sshpub]) |
472 |
|
473 |
def call_node_verify(self, node_list, checkdict, cluster_name): |
474 |
"""Request verification of given parameters.
|
475 |
|
476 |
This is a multi-node call.
|
477 |
|
478 |
"""
|
479 |
return self._MultiNodeCall(node_list, "node_verify", |
480 |
[checkdict, cluster_name]) |
481 |
|
482 |
@classmethod
|
483 |
def call_node_start_master(cls, node, start_daemons): |
484 |
"""Tells a node to activate itself as a master.
|
485 |
|
486 |
This is a single-node call.
|
487 |
|
488 |
"""
|
489 |
return cls._StaticSingleNodeCall(node, "node_start_master", |
490 |
[start_daemons]) |
491 |
|
492 |
@classmethod
|
493 |
def call_node_stop_master(cls, node, stop_daemons): |
494 |
"""Tells a node to demote itself from master status.
|
495 |
|
496 |
This is a single-node call.
|
497 |
|
498 |
"""
|
499 |
return cls._StaticSingleNodeCall(node, "node_stop_master", [stop_daemons]) |
500 |
|
501 |
@classmethod
|
502 |
def call_master_info(cls, node_list): |
503 |
"""Query master info.
|
504 |
|
505 |
This is a multi-node call.
|
506 |
|
507 |
"""
|
508 |
# TODO: should this method query down nodes?
|
509 |
return cls._StaticMultiNodeCall(node_list, "master_info", []) |
510 |
|
511 |
def call_version(self, node_list): |
512 |
"""Query node version.
|
513 |
|
514 |
This is a multi-node call.
|
515 |
|
516 |
"""
|
517 |
return self._MultiNodeCall(node_list, "version", []) |
518 |
|
519 |
def call_blockdev_create(self, node, bdev, size, owner, on_primary, info): |
520 |
"""Request creation of a given block device.
|
521 |
|
522 |
This is a single-node call.
|
523 |
|
524 |
"""
|
525 |
return self._SingleNodeCall(node, "blockdev_create", |
526 |
[bdev.ToDict(), size, owner, on_primary, info]) |
527 |
|
528 |
def call_blockdev_remove(self, node, bdev): |
529 |
"""Request removal of a given block device.
|
530 |
|
531 |
This is a single-node call.
|
532 |
|
533 |
"""
|
534 |
return self._SingleNodeCall(node, "blockdev_remove", [bdev.ToDict()]) |
535 |
|
536 |
def call_blockdev_rename(self, node, devlist): |
537 |
"""Request rename of the given block devices.
|
538 |
|
539 |
This is a single-node call.
|
540 |
|
541 |
"""
|
542 |
return self._SingleNodeCall(node, "blockdev_rename", |
543 |
[(d.ToDict(), uid) for d, uid in devlist]) |
544 |
|
545 |
def call_blockdev_assemble(self, node, disk, owner, on_primary): |
546 |
"""Request assembling of a given block device.
|
547 |
|
548 |
This is a single-node call.
|
549 |
|
550 |
"""
|
551 |
return self._SingleNodeCall(node, "blockdev_assemble", |
552 |
[disk.ToDict(), owner, on_primary]) |
553 |
|
554 |
def call_blockdev_shutdown(self, node, disk): |
555 |
"""Request shutdown of a given block device.
|
556 |
|
557 |
This is a single-node call.
|
558 |
|
559 |
"""
|
560 |
return self._SingleNodeCall(node, "blockdev_shutdown", [disk.ToDict()]) |
561 |
|
562 |
def call_blockdev_addchildren(self, node, bdev, ndevs): |
563 |
"""Request adding a list of children to a (mirroring) device.
|
564 |
|
565 |
This is a single-node call.
|
566 |
|
567 |
"""
|
568 |
return self._SingleNodeCall(node, "blockdev_addchildren", |
569 |
[bdev.ToDict(), |
570 |
[disk.ToDict() for disk in ndevs]]) |
571 |
|
572 |
def call_blockdev_removechildren(self, node, bdev, ndevs): |
573 |
"""Request removing a list of children from a (mirroring) device.
|
574 |
|
575 |
This is a single-node call.
|
576 |
|
577 |
"""
|
578 |
return self._SingleNodeCall(node, "blockdev_removechildren", |
579 |
[bdev.ToDict(), |
580 |
[disk.ToDict() for disk in ndevs]]) |
581 |
|
582 |
def call_blockdev_getmirrorstatus(self, node, disks): |
583 |
"""Request status of a (mirroring) device.
|
584 |
|
585 |
This is a single-node call.
|
586 |
|
587 |
"""
|
588 |
return self._SingleNodeCall(node, "blockdev_getmirrorstatus", |
589 |
[dsk.ToDict() for dsk in disks]) |
590 |
|
591 |
def call_blockdev_find(self, node, disk): |
592 |
"""Request identification of a given block device.
|
593 |
|
594 |
This is a single-node call.
|
595 |
|
596 |
"""
|
597 |
return self._SingleNodeCall(node, "blockdev_find", [disk.ToDict()]) |
598 |
|
599 |
def call_blockdev_close(self, node, disks): |
600 |
"""Closes the given block devices.
|
601 |
|
602 |
This is a single-node call.
|
603 |
|
604 |
"""
|
605 |
return self._SingleNodeCall(node, "blockdev_close", |
606 |
[cf.ToDict() for cf in disks]) |
607 |
|
608 |
@classmethod
|
609 |
def call_upload_file(cls, node_list, file_name, address_list=None): |
610 |
"""Upload a file.
|
611 |
|
612 |
The node will refuse the operation in case the file is not on the
|
613 |
approved file list.
|
614 |
|
615 |
This is a multi-node call.
|
616 |
|
617 |
@type node_list: list
|
618 |
@param node_list: the list of node names to upload to
|
619 |
@type file_name: str
|
620 |
@param file_name: the filename to upload
|
621 |
@type address_list: list or None
|
622 |
@keyword address_list: an optional list of node addresses, in order
|
623 |
to optimize the RPC speed
|
624 |
|
625 |
"""
|
626 |
data = utils.ReadFile(file_name) |
627 |
st = os.stat(file_name) |
628 |
params = [file_name, data, st.st_mode, st.st_uid, st.st_gid, |
629 |
st.st_atime, st.st_mtime] |
630 |
return cls._StaticMultiNodeCall(node_list, "upload_file", params, |
631 |
address_list=address_list) |
632 |
|
633 |
@classmethod
|
634 |
def call_write_ssconf_files(cls, node_list, values): |
635 |
"""Write ssconf files.
|
636 |
|
637 |
This is a multi-node call.
|
638 |
|
639 |
"""
|
640 |
return cls._StaticMultiNodeCall(node_list, "write_ssconf_files", [values]) |
641 |
|
642 |
def call_os_diagnose(self, node_list): |
643 |
"""Request a diagnose of OS definitions.
|
644 |
|
645 |
This is a multi-node call.
|
646 |
|
647 |
"""
|
648 |
result = self._MultiNodeCall(node_list, "os_diagnose", []) |
649 |
|
650 |
new_result = {} |
651 |
for node_name in result: |
652 |
if result[node_name]:
|
653 |
nr = [objects.OS.FromDict(oss) for oss in result[node_name]] |
654 |
else:
|
655 |
nr = [] |
656 |
new_result[node_name] = nr |
657 |
return new_result
|
658 |
|
659 |
def call_os_get(self, node, name): |
660 |
"""Returns an OS definition.
|
661 |
|
662 |
This is a single-node call.
|
663 |
|
664 |
"""
|
665 |
result = self._SingleNodeCall(node, "os_get", [name]) |
666 |
if isinstance(result, dict): |
667 |
return objects.OS.FromDict(result)
|
668 |
else:
|
669 |
return result
|
670 |
|
671 |
def call_hooks_runner(self, node_list, hpath, phase, env): |
672 |
"""Call the hooks runner.
|
673 |
|
674 |
Args:
|
675 |
- op: the OpCode instance
|
676 |
- env: a dictionary with the environment
|
677 |
|
678 |
This is a multi-node call.
|
679 |
|
680 |
"""
|
681 |
params = [hpath, phase, env] |
682 |
return self._MultiNodeCall(node_list, "hooks_runner", params) |
683 |
|
684 |
def call_iallocator_runner(self, node, name, idata): |
685 |
"""Call an iallocator on a remote node
|
686 |
|
687 |
Args:
|
688 |
- name: the iallocator name
|
689 |
- input: the json-encoded input string
|
690 |
|
691 |
This is a single-node call.
|
692 |
|
693 |
"""
|
694 |
return self._SingleNodeCall(node, "iallocator_runner", [name, idata]) |
695 |
|
696 |
def call_blockdev_grow(self, node, cf_bdev, amount): |
697 |
"""Request a snapshot of the given block device.
|
698 |
|
699 |
This is a single-node call.
|
700 |
|
701 |
"""
|
702 |
return self._SingleNodeCall(node, "blockdev_grow", |
703 |
[cf_bdev.ToDict(), amount]) |
704 |
|
705 |
def call_blockdev_snapshot(self, node, cf_bdev): |
706 |
"""Request a snapshot of the given block device.
|
707 |
|
708 |
This is a single-node call.
|
709 |
|
710 |
"""
|
711 |
return self._SingleNodeCall(node, "blockdev_snapshot", [cf_bdev.ToDict()]) |
712 |
|
713 |
def call_snapshot_export(self, node, snap_bdev, dest_node, instance, |
714 |
cluster_name, idx): |
715 |
"""Request the export of a given snapshot.
|
716 |
|
717 |
This is a single-node call.
|
718 |
|
719 |
"""
|
720 |
return self._SingleNodeCall(node, "snapshot_export", |
721 |
[snap_bdev.ToDict(), dest_node, |
722 |
self._InstDict(instance), cluster_name, idx])
|
723 |
|
724 |
def call_finalize_export(self, node, instance, snap_disks): |
725 |
"""Request the completion of an export operation.
|
726 |
|
727 |
This writes the export config file, etc.
|
728 |
|
729 |
This is a single-node call.
|
730 |
|
731 |
"""
|
732 |
flat_disks = [] |
733 |
for disk in snap_disks: |
734 |
flat_disks.append(disk.ToDict()) |
735 |
|
736 |
return self._SingleNodeCall(node, "finalize_export", |
737 |
[self._InstDict(instance), flat_disks])
|
738 |
|
739 |
def call_export_info(self, node, path): |
740 |
"""Queries the export information in a given path.
|
741 |
|
742 |
This is a single-node call.
|
743 |
|
744 |
"""
|
745 |
result = self._SingleNodeCall(node, "export_info", [path]) |
746 |
if not result: |
747 |
return result
|
748 |
return objects.SerializableConfigParser.Loads(str(result)) |
749 |
|
750 |
def call_instance_os_import(self, node, inst, src_node, src_images, |
751 |
cluster_name): |
752 |
"""Request the import of a backup into an instance.
|
753 |
|
754 |
This is a single-node call.
|
755 |
|
756 |
"""
|
757 |
return self._SingleNodeCall(node, "instance_os_import", |
758 |
[self._InstDict(inst), src_node, src_images,
|
759 |
cluster_name]) |
760 |
|
761 |
def call_export_list(self, node_list): |
762 |
"""Gets the stored exports list.
|
763 |
|
764 |
This is a multi-node call.
|
765 |
|
766 |
"""
|
767 |
return self._MultiNodeCall(node_list, "export_list", []) |
768 |
|
769 |
def call_export_remove(self, node, export): |
770 |
"""Requests removal of a given export.
|
771 |
|
772 |
This is a single-node call.
|
773 |
|
774 |
"""
|
775 |
return self._SingleNodeCall(node, "export_remove", [export]) |
776 |
|
777 |
@classmethod
|
778 |
def call_node_leave_cluster(cls, node): |
779 |
"""Requests a node to clean the cluster information it has.
|
780 |
|
781 |
This will remove the configuration information from the ganeti data
|
782 |
dir.
|
783 |
|
784 |
This is a single-node call.
|
785 |
|
786 |
"""
|
787 |
return cls._StaticSingleNodeCall(node, "node_leave_cluster", []) |
788 |
|
789 |
def call_node_volumes(self, node_list): |
790 |
"""Gets all volumes on node(s).
|
791 |
|
792 |
This is a multi-node call.
|
793 |
|
794 |
"""
|
795 |
return self._MultiNodeCall(node_list, "node_volumes", []) |
796 |
|
797 |
def call_test_delay(self, node_list, duration): |
798 |
"""Sleep for a fixed time on given node(s).
|
799 |
|
800 |
This is a multi-node call.
|
801 |
|
802 |
"""
|
803 |
return self._MultiNodeCall(node_list, "test_delay", [duration]) |
804 |
|
805 |
def call_file_storage_dir_create(self, node, file_storage_dir): |
806 |
"""Create the given file storage directory.
|
807 |
|
808 |
This is a single-node call.
|
809 |
|
810 |
"""
|
811 |
return self._SingleNodeCall(node, "file_storage_dir_create", |
812 |
[file_storage_dir]) |
813 |
|
814 |
def call_file_storage_dir_remove(self, node, file_storage_dir): |
815 |
"""Remove the given file storage directory.
|
816 |
|
817 |
This is a single-node call.
|
818 |
|
819 |
"""
|
820 |
return self._SingleNodeCall(node, "file_storage_dir_remove", |
821 |
[file_storage_dir]) |
822 |
|
823 |
def call_file_storage_dir_rename(self, node, old_file_storage_dir, |
824 |
new_file_storage_dir): |
825 |
"""Rename file storage directory.
|
826 |
|
827 |
This is a single-node call.
|
828 |
|
829 |
"""
|
830 |
return self._SingleNodeCall(node, "file_storage_dir_rename", |
831 |
[old_file_storage_dir, new_file_storage_dir]) |
832 |
|
833 |
@classmethod
|
834 |
def call_jobqueue_update(cls, node_list, address_list, file_name, content): |
835 |
"""Update job queue.
|
836 |
|
837 |
This is a multi-node call.
|
838 |
|
839 |
"""
|
840 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_update", |
841 |
[file_name, content], |
842 |
address_list=address_list) |
843 |
|
844 |
@classmethod
|
845 |
def call_jobqueue_purge(cls, node): |
846 |
"""Purge job queue.
|
847 |
|
848 |
This is a single-node call.
|
849 |
|
850 |
"""
|
851 |
return cls._StaticSingleNodeCall(node, "jobqueue_purge", []) |
852 |
|
853 |
@classmethod
|
854 |
def call_jobqueue_rename(cls, node_list, address_list, old, new): |
855 |
"""Rename a job queue file.
|
856 |
|
857 |
This is a multi-node call.
|
858 |
|
859 |
"""
|
860 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_rename", [old, new], |
861 |
address_list=address_list) |
862 |
|
863 |
@classmethod
|
864 |
def call_jobqueue_set_drain(cls, node_list, drain_flag): |
865 |
"""Set the drain flag on the queue.
|
866 |
|
867 |
This is a multi-node call.
|
868 |
|
869 |
@type node_list: list
|
870 |
@param node_list: the list of nodes to query
|
871 |
@type drain_flag: bool
|
872 |
@param drain_flag: if True, will set the drain flag, otherwise reset it.
|
873 |
|
874 |
"""
|
875 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_set_drain", |
876 |
[drain_flag]) |
877 |
|
878 |
def call_hypervisor_validate_params(self, node_list, hvname, hvparams): |
879 |
"""Validate the hypervisor params.
|
880 |
|
881 |
This is a multi-node call.
|
882 |
|
883 |
@type node_list: list
|
884 |
@param node_list: the list of nodes to query
|
885 |
@type hvname: string
|
886 |
@param hvname: the hypervisor name
|
887 |
@type hvparams: dict
|
888 |
@param hvparams: the hypervisor parameters to be validated
|
889 |
|
890 |
"""
|
891 |
cluster = self._cfg.GetClusterInfo()
|
892 |
hv_full = cluster.FillDict(cluster.hvparams.get(hvname, {}), hvparams) |
893 |
return self._MultiNodeCall(node_list, "hypervisor_validate_params", |
894 |
[hvname, hv_full]) |