opcodes.py 19.1 KB
Newer Older
Iustin Pop's avatar
Iustin Pop committed
1
#
Iustin Pop's avatar
Iustin Pop committed
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
#

# Copyright (C) 2006, 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


"""OpCodes module

This module implements the data structures which define the cluster
operations - the so-called opcodes.

Iustin Pop's avatar
Iustin Pop committed
27
28
Every operation which modifies the cluster state is expressed via
opcodes.
Iustin Pop's avatar
Iustin Pop committed
29
30
31
32
33
34
35

"""

# this are practically structures, so disable the message about too
# few public methods:
# pylint: disable-msg=R0903

36

Iustin Pop's avatar
Iustin Pop committed
37
class BaseOpCode(object):
38
39
  """A simple serializable object.

Iustin Pop's avatar
Iustin Pop committed
40
41
42
  This object serves as a parent class for OpCode without any custom
  field handling.

43
  """
Iustin Pop's avatar
Iustin Pop committed
44
45
46
  __slots__ = []

  def __init__(self, **kwargs):
Iustin Pop's avatar
Iustin Pop committed
47
48
49
50
51
52
53
54
    """Constructor for BaseOpCode.

    The constructor takes only keyword arguments and will set
    attributes on this object based on the passed arguments. As such,
    it means that you should not pass arguments which are not in the
    __slots__ attribute for this class.

    """
Iustin Pop's avatar
Iustin Pop committed
55
56
    for key in kwargs:
      if key not in self.__slots__:
57
        raise TypeError("Object %s doesn't support the parameter '%s'" %
58
                        (self.__class__.__name__, key))
Iustin Pop's avatar
Iustin Pop committed
59
60
      setattr(self, key, kwargs[key])

61
  def __getstate__(self):
Iustin Pop's avatar
Iustin Pop committed
62
63
64
65
66
67
68
69
70
    """Generic serializer.

    This method just returns the contents of the instance as a
    dictionary.

    @rtype:  C{dict}
    @return: the instance attributes and their values

    """
71
72
73
74
75
76
77
    state = {}
    for name in self.__slots__:
      if hasattr(self, name):
        state[name] = getattr(self, name)
    return state

  def __setstate__(self, state):
Iustin Pop's avatar
Iustin Pop committed
78
79
80
81
82
83
84
85
86
    """Generic unserializer.

    This method just restores from the serialized state the attributes
    of the current instance.

    @param state: the serialized opcode data
    @type state:  C{dict}

    """
87
88
89
90
91
92
93
94
95
96
97
98
    if not isinstance(state, dict):
      raise ValueError("Invalid data to __setstate__: expected dict, got %s" %
                       type(state))

    for name in self.__slots__:
      if name not in state:
        delattr(self, name)

    for name in state:
      setattr(self, name, state[name])


Iustin Pop's avatar
Iustin Pop committed
99
class OpCode(BaseOpCode):
Iustin Pop's avatar
Iustin Pop committed
100
101
102
103
104
105
  """Abstract OpCode.

  This is the root of the actual OpCode hierarchy. All clases derived
  from this class should override OP_ID.

  @cvar OP_ID: The ID of this opcode. This should be unique amongst all
106
107
108
               children of this class.
  @ivar dry_run: Whether the LU should be run in dry-run mode, i.e. just
                 the check steps
Iustin Pop's avatar
Iustin Pop committed
109
110

  """
111
  OP_ID = "OP_ABSTRACT"
112
  __slots__ = BaseOpCode.__slots__ + ["dry_run"]
113
114
115
116

  def __getstate__(self):
    """Specialized getstate for opcodes.

Iustin Pop's avatar
Iustin Pop committed
117
118
119
120
121
122
123
    This method adds to the state dictionary the OP_ID of the class,
    so that on unload we can identify the correct class for
    instantiating the opcode.

    @rtype:   C{dict}
    @return:  the state as a dictionary

124
    """
Iustin Pop's avatar
Iustin Pop committed
125
    data = BaseOpCode.__getstate__(self)
126
127
128
129
    data["OP_ID"] = self.OP_ID
    return data

  @classmethod
130
  def LoadOpCode(cls, data):
131
132
    """Generic load opcode method.

Iustin Pop's avatar
Iustin Pop committed
133
134
135
136
137
138
139
    The method identifies the correct opcode class from the dict-form
    by looking for a OP_ID key, if this is not found, or its value is
    not available in this module as a child of this class, we fail.

    @type data:  C{dict}
    @param data: the serialized opcode

140
141
142
143
144
145
146
    """
    if not isinstance(data, dict):
      raise ValueError("Invalid data to LoadOpCode (%s)" % type(data))
    if "OP_ID" not in data:
      raise ValueError("Invalid data to LoadOpcode, missing OP_ID")
    op_id = data["OP_ID"]
    op_class = None
Iustin Pop's avatar
Iustin Pop committed
147
148
149
    if op_id in OP_MAPPING:
      op_class = OP_MAPPING[op_id]
    else:
150
151
152
153
154
155
156
157
      raise ValueError("Invalid data to LoadOpCode: OP_ID %s unsupported" %
                       op_id)
    op = op_class()
    new_data = data.copy()
    del new_data["OP_ID"]
    op.__setstate__(new_data)
    return op

158
159
160
161
162
163
164
165
166
167
168
169
  def Summary(self):
    """Generates a summary description of this opcode.

    """
    # all OP_ID start with OP_, we remove that
    txt = self.OP_ID[3:]
    field_name = getattr(self, "OP_DSC_FIELD", None)
    if field_name:
      field_value = getattr(self, field_name, None)
      txt = "%s(%s)" % (txt, field_value)
    return txt

Iustin Pop's avatar
Iustin Pop committed
170

171
172
# cluster opcodes

173
174
175
176
177
178
179
180
181
182
183
class OpPostInitCluster(OpCode):
  """Post cluster initialization.

  This opcode does not touch the cluster at all. Its purpose is to run hooks
  after the cluster has been initialized.

  """
  OP_ID = "OP_CLUSTER_POST_INIT"
  __slots__ = OpCode.__slots__ + []


Iustin Pop's avatar
Iustin Pop committed
184
class OpDestroyCluster(OpCode):
Iustin Pop's avatar
Iustin Pop committed
185
186
187
188
189
190
  """Destroy the cluster.

  This opcode has no other parameters. All the state is irreversibly
  lost after the execution of this opcode.

  """
Iustin Pop's avatar
Iustin Pop committed
191
  OP_ID = "OP_CLUSTER_DESTROY"
192
  __slots__ = OpCode.__slots__ + []
Iustin Pop's avatar
Iustin Pop committed
193
194
195


class OpQueryClusterInfo(OpCode):
Iustin Pop's avatar
Iustin Pop committed
196
  """Query cluster information."""
Iustin Pop's avatar
Iustin Pop committed
197
  OP_ID = "OP_CLUSTER_QUERY"
198
  __slots__ = OpCode.__slots__ + []
Iustin Pop's avatar
Iustin Pop committed
199
200
201


class OpVerifyCluster(OpCode):
Iustin Pop's avatar
Iustin Pop committed
202
203
204
205
206
207
208
209
210
  """Verify the cluster state.

  @type skip_checks: C{list}
  @ivar skip_checks: steps to be skipped from the verify process; this
                     needs to be a subset of
                     L{constants.VERIFY_OPTIONAL_CHECKS}; currently
                     only L{constants.VERIFY_NPLUSONE_MEM} can be passed

  """
Iustin Pop's avatar
Iustin Pop committed
211
  OP_ID = "OP_CLUSTER_VERIFY"
212
213
  __slots__ = OpCode.__slots__ + ["skip_checks", "verbose", "error_codes",
                                  "debug_simulate_errors"]
Iustin Pop's avatar
Iustin Pop committed
214
215


Iustin Pop's avatar
Iustin Pop committed
216
217
218
219
220
class OpVerifyDisks(OpCode):
  """Verify the cluster disks.

  Parameters: none

221
  Result: a tuple of four elements:
Iustin Pop's avatar
Iustin Pop committed
222
    - list of node names with bad data returned (unreachable, etc.)
Iustin Pop's avatar
Iustin Pop committed
223
    - dict of node names with broken volume groups (values: error msg)
Iustin Pop's avatar
Iustin Pop committed
224
    - list of instances with degraded disks (that should be activated)
225
226
    - dict of instances with missing logical volumes (values: (node, vol)
      pairs with details about the missing volumes)
Iustin Pop's avatar
Iustin Pop committed
227

228
229
230
231
  In normal operation, all lists should be empty. A non-empty instance
  list (3rd element of the result) is still ok (errors were fixed) but
  non-empty node list means some node is down, and probably there are
  unfixable drbd errors.
Iustin Pop's avatar
Iustin Pop committed
232
233
234
235
236
237

  Note that only instances that are drbd-based are taken into
  consideration. This might need to be revisited in the future.

  """
  OP_ID = "OP_CLUSTER_VERIFY_DISKS"
238
  __slots__ = OpCode.__slots__ + []
Iustin Pop's avatar
Iustin Pop committed
239
240


241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
class OpRepairDiskSizes(OpCode):
  """Verify the disk sizes of the instances and fixes configuration
  mimatches.

  Parameters: optional instances list, in case we want to restrict the
  checks to only a subset of the instances.

  Result: a list of tuples, (instance, disk, new-size) for changed
  configurations.

  In normal operation, the list should be empty.

  @type instances: list
  @ivar instances: the list of instances to check, or empty for all instances

  """
  OP_ID = "OP_CLUSTER_REPAIR_DISK_SIZES"
  __slots__ = ["instances"]


261
262
263
class OpQueryConfigValues(OpCode):
  """Query cluster configuration values."""
  OP_ID = "OP_CLUSTER_CONFIG_QUERY"
264
  __slots__ = OpCode.__slots__ + ["output_fields"]
Iustin Pop's avatar
Iustin Pop committed
265
266


267
class OpRenameCluster(OpCode):
Iustin Pop's avatar
Iustin Pop committed
268
269
270
271
272
273
274
275
  """Rename the cluster.

  @type name: C{str}
  @ivar name: The new name of the cluster. The name and/or the master IP
              address will be changed to match the new name and its IP
              address.

  """
276
  OP_ID = "OP_CLUSTER_RENAME"
277
  OP_DSC_FIELD = "name"
278
  __slots__ = OpCode.__slots__ + ["name"]
279
280


281
class OpSetClusterParams(OpCode):
Iustin Pop's avatar
Iustin Pop committed
282
283
284
285
286
287
  """Change the parameters of the cluster.

  @type vg_name: C{str} or C{None}
  @ivar vg_name: The new volume group name or None to disable LVM usage.

  """
288
  OP_ID = "OP_CLUSTER_SET_PARAMS"
289
  __slots__ = OpCode.__slots__ + [
290
291
292
293
    "vg_name",
    "enabled_hypervisors",
    "hvparams",
    "beparams",
294
    "nicparams",
295
296
    "candidate_pool_size",
    ]
297
298


299
300
301
302
303
class OpRedistributeConfig(OpCode):
  """Force a full push of the cluster configuration.

  """
  OP_ID = "OP_CLUSTER_REDIST_CONF"
304
  __slots__ = OpCode.__slots__ + [
305
306
    ]

307
308
# node opcodes

Iustin Pop's avatar
Iustin Pop committed
309
class OpRemoveNode(OpCode):
Iustin Pop's avatar
Iustin Pop committed
310
311
312
313
314
315
316
  """Remove a node.

  @type node_name: C{str}
  @ivar node_name: The name of the node to remove. If the node still has
                   instances on it, the operation will fail.

  """
Iustin Pop's avatar
Iustin Pop committed
317
  OP_ID = "OP_NODE_REMOVE"
318
  OP_DSC_FIELD = "node_name"
319
  __slots__ = OpCode.__slots__ + ["node_name"]
Iustin Pop's avatar
Iustin Pop committed
320
321
322


class OpAddNode(OpCode):
Iustin Pop's avatar
Iustin Pop committed
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
  """Add a node to the cluster.

  @type node_name: C{str}
  @ivar node_name: The name of the node to add. This can be a short name,
                   but it will be expanded to the FQDN.
  @type primary_ip: IP address
  @ivar primary_ip: The primary IP of the node. This will be ignored when the
                    opcode is submitted, but will be filled during the node
                    add (so it will be visible in the job query).
  @type secondary_ip: IP address
  @ivar secondary_ip: The secondary IP of the node. This needs to be passed
                      if the cluster has been initialized in 'dual-network'
                      mode, otherwise it must not be given.
  @type readd: C{bool}
  @ivar readd: Whether to re-add an existing node to the cluster. If
               this is not passed, then the operation will abort if the node
               name is already in the cluster; use this parameter to 'repair'
               a node that had its configuration broken, or was reinstalled
               without removal from the cluster.

  """
Iustin Pop's avatar
Iustin Pop committed
344
  OP_ID = "OP_NODE_ADD"
345
  OP_DSC_FIELD = "node_name"
346
347
348
  __slots__ = OpCode.__slots__ + [
    "node_name", "primary_ip", "secondary_ip", "readd",
    ]
Iustin Pop's avatar
Iustin Pop committed
349
350
351
352
353


class OpQueryNodes(OpCode):
  """Compute the list of nodes."""
  OP_ID = "OP_NODE_QUERY"
354
  __slots__ = OpCode.__slots__ + ["output_fields", "names", "use_locking"]
Iustin Pop's avatar
Iustin Pop committed
355
356


357
358
359
class OpQueryNodeVolumes(OpCode):
  """Get list of volumes on node."""
  OP_ID = "OP_NODE_QUERYVOLS"
360
  __slots__ = OpCode.__slots__ + ["nodes", "output_fields"]
361
362


363
364
365
366
367
368
369
370
371
372
373
class OpQueryNodeStorage(OpCode):
  """Get information on storage for node(s)."""
  OP_ID = "OP_NODE_QUERY_STORAGE"
  __slots__ = OpCode.__slots__ + [
    "nodes",
    "storage_type",
    "name",
    "output_fields",
    ]


374
375
376
377
378
379
380
381
382
383
384
class OpModifyNodeStorage(OpCode):
  """"""
  OP_ID = "OP_NODE_MODIFY_STORAGE"
  __slots__ = OpCode.__slots__ + [
    "node_name",
    "storage_type",
    "name",
    "changes",
    ]


385
386
387
388
389
390
391
392
393
394
395
class OpRepairNodeStorage(OpCode):
  """Repairs the volume group on a node."""
  OP_ID = "OP_REPAIR_NODE_STORAGE"
  OP_DSC_FIELD = "node_name"
  __slots__ = OpCode.__slots__ + [
    "node_name",
    "storage_type",
    "name",
    ]


Iustin Pop's avatar
Iustin Pop committed
396
397
398
399
class OpSetNodeParams(OpCode):
  """Change the parameters of a node."""
  OP_ID = "OP_NODE_SET_PARAMS"
  OP_DSC_FIELD = "node_name"
400
  __slots__ = OpCode.__slots__ + [
Iustin Pop's avatar
Iustin Pop committed
401
402
403
    "node_name",
    "force",
    "master_candidate",
404
    "offline",
405
    "drained",
Iustin Pop's avatar
Iustin Pop committed
406
407
    ]

Iustin Pop's avatar
Iustin Pop committed
408
409
410
411
412

class OpPowercycleNode(OpCode):
  """Tries to powercycle a node."""
  OP_ID = "OP_NODE_POWERCYCLE"
  OP_DSC_FIELD = "node_name"
413
  __slots__ = OpCode.__slots__ + [
Iustin Pop's avatar
Iustin Pop committed
414
415
416
417
    "node_name",
    "force",
    ]

418
419
420
421
422
423
424
425
426
427

class OpEvacuateNode(OpCode):
  """Relocate secondary instances from a node."""
  OP_ID = "OP_NODE_EVACUATE"
  OP_DSC_FIELD = "node_name"
  __slots__ = OpCode.__slots__ + [
    "node_name", "remote_node", "iallocator",
    ]


428
429
430
431
432
433
434
435
436
437
class OpMigrateNode(OpCode):
  """Migrate all instances from a node."""
  OP_ID = "OP_NODE_MIGRATE"
  OP_DSC_FIELD = "node_name"
  __slots__ = OpCode.__slots__ + [
    "node_name",
    "live",
    ]


Iustin Pop's avatar
Iustin Pop committed
438
439
440
# instance opcodes

class OpCreateInstance(OpCode):
Iustin Pop's avatar
Iustin Pop committed
441
  """Create an instance."""
Iustin Pop's avatar
Iustin Pop committed
442
  OP_ID = "OP_INSTANCE_CREATE"
443
  OP_DSC_FIELD = "instance_name"
444
  __slots__ = OpCode.__slots__ + [
445
446
    "instance_name", "os_type", "force_variant",
    "pnode", "disk_template", "snode", "mode",
447
448
449
    "disks", "nics",
    "src_node", "src_path", "start",
    "wait_for_sync", "ip_check",
450
    "file_storage_dir", "file_driver",
451
452
    "iallocator",
    "hypervisor", "hvparams", "beparams",
453
    "dry_run",
454
    ]
Iustin Pop's avatar
Iustin Pop committed
455
456


457
class OpReinstallInstance(OpCode):
Iustin Pop's avatar
Iustin Pop committed
458
  """Reinstall an instance's OS."""
459
  OP_ID = "OP_INSTANCE_REINSTALL"
460
  OP_DSC_FIELD = "instance_name"
461
  __slots__ = OpCode.__slots__ + ["instance_name", "os_type", "force_variant"]
462
463


Iustin Pop's avatar
Iustin Pop committed
464
465
466
class OpRemoveInstance(OpCode):
  """Remove an instance."""
  OP_ID = "OP_INSTANCE_REMOVE"
467
  OP_DSC_FIELD = "instance_name"
468
  __slots__ = OpCode.__slots__ + ["instance_name", "ignore_failures"]
Iustin Pop's avatar
Iustin Pop committed
469
470


471
472
473
class OpRenameInstance(OpCode):
  """Rename an instance."""
  OP_ID = "OP_INSTANCE_RENAME"
474
475
476
  __slots__ = OpCode.__slots__ + [
    "instance_name", "ignore_ip", "new_name",
    ]
477
478


Iustin Pop's avatar
Iustin Pop committed
479
class OpStartupInstance(OpCode):
Iustin Pop's avatar
Iustin Pop committed
480
  """Startup an instance."""
Iustin Pop's avatar
Iustin Pop committed
481
  OP_ID = "OP_INSTANCE_STARTUP"
482
  OP_DSC_FIELD = "instance_name"
483
484
485
  __slots__ = OpCode.__slots__ + [
    "instance_name", "force", "hvparams", "beparams",
    ]
Iustin Pop's avatar
Iustin Pop committed
486
487
488


class OpShutdownInstance(OpCode):
Iustin Pop's avatar
Iustin Pop committed
489
  """Shutdown an instance."""
Iustin Pop's avatar
Iustin Pop committed
490
  OP_ID = "OP_INSTANCE_SHUTDOWN"
491
  OP_DSC_FIELD = "instance_name"
492
  __slots__ = OpCode.__slots__ + ["instance_name"]
Iustin Pop's avatar
Iustin Pop committed
493
494


495
496
class OpRebootInstance(OpCode):
  """Reboot an instance."""
Iustin Pop's avatar
Iustin Pop committed
497
  OP_ID = "OP_INSTANCE_REBOOT"
498
  OP_DSC_FIELD = "instance_name"
499
500
501
  __slots__ = OpCode.__slots__ + [
    "instance_name", "reboot_type", "ignore_secondaries",
    ]
502
503


Iustin Pop's avatar
Iustin Pop committed
504
class OpReplaceDisks(OpCode):
Iustin Pop's avatar
Iustin Pop committed
505
  """Replace the disks of an instance."""
Iustin Pop's avatar
Iustin Pop committed
506
  OP_ID = "OP_INSTANCE_REPLACE_DISKS"
507
  OP_DSC_FIELD = "instance_name"
508
509
510
  __slots__ = OpCode.__slots__ + [
    "instance_name", "remote_node", "mode", "disks", "iallocator",
    ]
Iustin Pop's avatar
Iustin Pop committed
511
512
513
514
515


class OpFailoverInstance(OpCode):
  """Failover an instance."""
  OP_ID = "OP_INSTANCE_FAILOVER"
516
  OP_DSC_FIELD = "instance_name"
517
  __slots__ = OpCode.__slots__ + ["instance_name", "ignore_consistency"]
Iustin Pop's avatar
Iustin Pop committed
518
519


520
521
522
523
524
525
class OpMigrateInstance(OpCode):
  """Migrate an instance.

  This migrates (without shutting down an instance) to its secondary
  node.

Iustin Pop's avatar
Iustin Pop committed
526
  @ivar instance_name: the name of the instance
527
528
529

  """
  OP_ID = "OP_INSTANCE_MIGRATE"
Iustin Pop's avatar
Iustin Pop committed
530
  OP_DSC_FIELD = "instance_name"
531
  __slots__ = OpCode.__slots__ + ["instance_name", "live", "cleanup"]
532
533


534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
class OpMoveInstance(OpCode):
  """Move an instance.

  This move (with shutting down an instance and data copying) to an
  arbitrary node.

  @ivar instance_name: the name of the instance
  @ivar target_node: the destination node

  """
  OP_ID = "OP_INSTANCE_MOVE"
  OP_DSC_FIELD = "instance_name"
  __slots__ = OpCode.__slots__ + ["instance_name", "target_node"]


Iustin Pop's avatar
Iustin Pop committed
549
class OpConnectConsole(OpCode):
Iustin Pop's avatar
Iustin Pop committed
550
  """Connect to an instance's console."""
Iustin Pop's avatar
Iustin Pop committed
551
  OP_ID = "OP_INSTANCE_CONSOLE"
552
  OP_DSC_FIELD = "instance_name"
553
  __slots__ = OpCode.__slots__ + ["instance_name"]
Iustin Pop's avatar
Iustin Pop committed
554
555
556


class OpActivateInstanceDisks(OpCode):
Iustin Pop's avatar
Iustin Pop committed
557
  """Activate an instance's disks."""
Iustin Pop's avatar
Iustin Pop committed
558
  OP_ID = "OP_INSTANCE_ACTIVATE_DISKS"
559
  OP_DSC_FIELD = "instance_name"
560
  __slots__ = OpCode.__slots__ + ["instance_name", "ignore_size"]
Iustin Pop's avatar
Iustin Pop committed
561
562
563


class OpDeactivateInstanceDisks(OpCode):
Iustin Pop's avatar
Iustin Pop committed
564
  """Deactivate an instance's disks."""
Iustin Pop's avatar
Iustin Pop committed
565
  OP_ID = "OP_INSTANCE_DEACTIVATE_DISKS"
566
  OP_DSC_FIELD = "instance_name"
567
  __slots__ = OpCode.__slots__ + ["instance_name"]
Iustin Pop's avatar
Iustin Pop committed
568
569


Iustin Pop's avatar
Iustin Pop committed
570
571
572
573
574
575
576
class OpRecreateInstanceDisks(OpCode):
  """Deactivate an instance's disks."""
  OP_ID = "OP_INSTANCE_RECREATE_DISKS"
  OP_DSC_FIELD = "instance_name"
  __slots__ = OpCode.__slots__ + ["instance_name", "disks"]


Iustin Pop's avatar
Iustin Pop committed
577
578
579
class OpQueryInstances(OpCode):
  """Compute the list of instances."""
  OP_ID = "OP_INSTANCE_QUERY"
580
  __slots__ = OpCode.__slots__ + ["output_fields", "names", "use_locking"]
Iustin Pop's avatar
Iustin Pop committed
581
582
583
584
585


class OpQueryInstanceData(OpCode):
  """Compute the run-time status of instances."""
  OP_ID = "OP_INSTANCE_QUERY_DATA"
586
  __slots__ = OpCode.__slots__ + ["instances", "static"]
Iustin Pop's avatar
Iustin Pop committed
587
588


589
class OpSetInstanceParams(OpCode):
Iustin Pop's avatar
Iustin Pop committed
590
  """Change the parameters of an instance."""
591
  OP_ID = "OP_INSTANCE_SET_PARAMS"
592
  OP_DSC_FIELD = "instance_name"
593
  __slots__ = OpCode.__slots__ + [
594
    "instance_name",
Iustin Pop's avatar
Iustin Pop committed
595
    "hvparams", "beparams", "force",
596
    "nics", "disks",
597
    ]
Iustin Pop's avatar
Iustin Pop committed
598
599


Iustin Pop's avatar
Iustin Pop committed
600
601
602
class OpGrowDisk(OpCode):
  """Grow a disk of an instance."""
  OP_ID = "OP_INSTANCE_GROW_DISK"
603
  OP_DSC_FIELD = "instance_name"
604
605
606
  __slots__ = OpCode.__slots__ + [
    "instance_name", "disk", "amount", "wait_for_sync",
    ]
Iustin Pop's avatar
Iustin Pop committed
607
608


Iustin Pop's avatar
Iustin Pop committed
609
610
611
612
# OS opcodes
class OpDiagnoseOS(OpCode):
  """Compute the list of guest operating systems."""
  OP_ID = "OP_OS_DIAGNOSE"
613
  __slots__ = OpCode.__slots__ + ["output_fields", "names"]
Iustin Pop's avatar
Iustin Pop committed
614

615

Iustin Pop's avatar
Iustin Pop committed
616
617
618
619
# Exports opcodes
class OpQueryExports(OpCode):
  """Compute the list of exported images."""
  OP_ID = "OP_BACKUP_QUERY"
620
  __slots__ = OpCode.__slots__ + ["nodes", "use_locking"]
Iustin Pop's avatar
Iustin Pop committed
621

622

Iustin Pop's avatar
Iustin Pop committed
623
624
625
class OpExportInstance(OpCode):
  """Export an instance."""
  OP_ID = "OP_BACKUP_EXPORT"
626
  OP_DSC_FIELD = "instance_name"
627
  __slots__ = OpCode.__slots__ + ["instance_name", "target_node", "shutdown"]
628

Michael Hanselmann's avatar
Michael Hanselmann committed
629

630
631
632
class OpRemoveExport(OpCode):
  """Remove an instance's export."""
  OP_ID = "OP_BACKUP_REMOVE"
633
  OP_DSC_FIELD = "instance_name"
634
  __slots__ = OpCode.__slots__ + ["instance_name"]
635

Michael Hanselmann's avatar
Michael Hanselmann committed
636

637
638
639
640
# Tags opcodes
class OpGetTags(OpCode):
  """Returns the tags of the given object."""
  OP_ID = "OP_TAGS_GET"
641
  OP_DSC_FIELD = "name"
642
  __slots__ = OpCode.__slots__ + ["kind", "name"]
643
644


Iustin Pop's avatar
Iustin Pop committed
645
646
647
class OpSearchTags(OpCode):
  """Searches the tags in the cluster for a given pattern."""
  OP_ID = "OP_TAGS_SEARCH"
648
  OP_DSC_FIELD = "pattern"
649
  __slots__ = OpCode.__slots__ + ["pattern"]
Iustin Pop's avatar
Iustin Pop committed
650
651


652
653
class OpAddTags(OpCode):
  """Add a list of tags on a given object."""
654
  OP_ID = "OP_TAGS_SET"
655
  __slots__ = OpCode.__slots__ + ["kind", "name", "tags"]
656
657


658
659
class OpDelTags(OpCode):
  """Remove a list of tags from a given object."""
660
  OP_ID = "OP_TAGS_DEL"
661
  __slots__ = OpCode.__slots__ + ["kind", "name", "tags"]
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686


# Test opcodes
class OpTestDelay(OpCode):
  """Sleeps for a configured amount of time.

  This is used just for debugging and testing.

  Parameters:
    - duration: the time to sleep
    - on_master: if true, sleep on the master
    - on_nodes: list of nodes in which to sleep

  If the on_master parameter is true, it will execute a sleep on the
  master (before any node sleep).

  If the on_nodes list is not empty, it will sleep on those nodes
  (after the sleep on the master, if that is enabled).

  As an additional feature, the case of duration < 0 will be reported
  as an execution error, so this opcode can be used as a failure
  generator. The case of duration == 0 will not be treated specially.

  """
  OP_ID = "OP_TEST_DELAY"
687
  OP_DSC_FIELD = "duration"
688
  __slots__ = OpCode.__slots__ + ["duration", "on_master", "on_nodes"]
689
690
691
692
693
694
695
696
697
698
699
700
701
702


class OpTestAllocator(OpCode):
  """Allocator framework testing.

  This opcode has two modes:
    - gather and return allocator input for a given mode (allocate new
      or replace secondary) and a given instance definition (direction
      'in')
    - run a selected allocator for a given operation (as above) and
      return the allocator output (direction 'out')

  """
  OP_ID = "OP_TEST_ALLOCATOR"
703
  OP_DSC_FIELD = "allocator"
704
  __slots__ = OpCode.__slots__ + [
705
706
    "direction", "mode", "allocator", "name",
    "mem_size", "disks", "disk_template",
707
    "os", "tags", "nics", "vcpus", "hypervisor",
708
    ]
Iustin Pop's avatar
Iustin Pop committed
709

710

Iustin Pop's avatar
Iustin Pop committed
711
712
713
OP_MAPPING = dict([(v.OP_ID, v) for v in globals().values()
                   if (isinstance(v, type) and issubclass(v, OpCode) and
                       hasattr(v, "OP_ID"))])