4 # Copyright (C) 2006, 2007 Google Inc.
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.
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.
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
22 """Transportable objects for Ganeti.
24 This module provides small, mostly data-only objects which are safe to
25 pass to and from external parties.
29 # pylint: disable-msg=E0203,W0201
31 # E0203: Access to member %r before its definition, since we use
32 # objects.py which doesn't explicitely initialise its members
34 # W0201: Attribute '%s' defined outside __init__
39 from cStringIO import StringIO
41 from ganeti import errors
42 from ganeti import constants
45 __all__ = ["ConfigObject", "ConfigData", "NIC", "Disk", "Instance",
46 "OS", "Node", "Cluster", "FillDict"]
48 _TIMESTAMPS = ["ctime", "mtime"]
52 def FillDict(defaults_dict, custom_dict, skip_keys=None):
53 """Basic function to apply settings on top a default dict.
55 @type defaults_dict: dict
56 @param defaults_dict: dictionary holding the default values
57 @type custom_dict: dict
58 @param custom_dict: dictionary holding customized value
60 @param skip_keys: which keys not to fill
62 @return: dict with the 'full' values
65 ret_dict = copy.deepcopy(defaults_dict)
66 ret_dict.update(custom_dict)
76 def UpgradeGroupedParams(target, defaults):
77 """Update all groups for the target parameter.
79 @type target: dict of dicts
80 @param target: {group: {parameter: value}}
82 @param defaults: default parameter values
86 target = {constants.PP_DEFAULT: defaults}
89 target[group] = FillDict(defaults, target[group])
93 class ConfigObject(object):
94 """A generic config object.
96 It has the following properties:
98 - provides somewhat safe recursive unpickling and pickling for its classes
99 - unset attributes which are defined in slots are always returned
100 as None instead of raising an error
102 Classes derived from this must always declare __slots__ (we use many
103 config objects and the memory reduction is useful)
108 def __init__(self, **kwargs):
109 for k, v in kwargs.iteritems():
112 def __getattr__(self, name):
113 if name not in self._all_slots():
114 raise AttributeError("Invalid object attribute %s.%s" %
115 (type(self).__name__, name))
118 def __setstate__(self, state):
119 slots = self._all_slots()
122 setattr(self, name, state[name])
126 """Compute the list of all declared slots for a class.
130 for parent in cls.__mro__:
131 slots.extend(getattr(parent, "__slots__", []))
135 """Convert to a dict holding only standard python types.
137 The generic routine just dumps all of this object's attributes in
138 a dict. It does not work if the class has children who are
139 ConfigObjects themselves (e.g. the nics list in an Instance), in
140 which case the object should subclass the function in order to
141 make sure all objects returned are only standard python types.
145 for name in self._all_slots():
146 value = getattr(self, name, None)
147 if value is not None:
151 __getstate__ = ToDict
154 def FromDict(cls, val):
155 """Create an object from a dictionary.
157 This generic routine takes a dict, instantiates a new instance of
158 the given class, and sets attributes based on the dict content.
160 As for `ToDict`, this does not work if the class has children
161 who are ConfigObjects themselves (e.g. the nics list in an
162 Instance), in which case the object should subclass the function
163 and alter the objects.
166 if not isinstance(val, dict):
167 raise errors.ConfigurationError("Invalid object passed to FromDict:"
168 " expected dict, got %s" % type(val))
169 val_str = dict([(str(k), v) for k, v in val.iteritems()])
170 obj = cls(**val_str) # pylint: disable-msg=W0142
174 def _ContainerToDicts(container):
175 """Convert the elements of a container to standard python types.
177 This method converts a container with elements derived from
178 ConfigData to standard python types. If the container is a dict,
179 we don't touch the keys, only the values.
182 if isinstance(container, dict):
183 ret = dict([(k, v.ToDict()) for k, v in container.iteritems()])
184 elif isinstance(container, (list, tuple, set, frozenset)):
185 ret = [elem.ToDict() for elem in container]
187 raise TypeError("Invalid type %s passed to _ContainerToDicts" %
192 def _ContainerFromDicts(source, c_type, e_type):
193 """Convert a container from standard python types.
195 This method converts a container with standard python types to
196 ConfigData objects. If the container is a dict, we don't touch the
197 keys, only the values.
200 if not isinstance(c_type, type):
201 raise TypeError("Container type %s passed to _ContainerFromDicts is"
202 " not a type" % type(c_type))
204 ret = dict([(k, e_type.FromDict(v)) for k, v in source.iteritems()])
205 elif c_type in (list, tuple, set, frozenset):
206 ret = c_type([e_type.FromDict(elem) for elem in source])
208 raise TypeError("Invalid container type %s passed to"
209 " _ContainerFromDicts" % c_type)
213 """Makes a deep copy of the current object and its children.
216 dict_form = self.ToDict()
217 clone_obj = self.__class__.FromDict(dict_form)
221 """Implement __repr__ for ConfigObjects."""
222 return repr(self.ToDict())
224 def UpgradeConfig(self):
225 """Fill defaults for missing configuration values.
227 This method will be called at configuration load time, and its
228 implementation will be object dependent.
234 class TaggableObject(ConfigObject):
235 """An generic class supporting tags.
239 VALID_TAG_RE = re.compile("^[\w.+*/:@-]+$")
242 def ValidateTag(cls, tag):
243 """Check if a tag is valid.
245 If the tag is invalid, an errors.TagError will be raised. The
246 function has no return value.
249 if not isinstance(tag, basestring):
250 raise errors.TagError("Invalid tag type (not a string)")
251 if len(tag) > constants.MAX_TAG_LEN:
252 raise errors.TagError("Tag too long (>%d characters)" %
253 constants.MAX_TAG_LEN)
255 raise errors.TagError("Tags cannot be empty")
256 if not cls.VALID_TAG_RE.match(tag):
257 raise errors.TagError("Tag contains invalid characters")
260 """Return the tags list.
263 tags = getattr(self, "tags", None)
265 tags = self.tags = set()
268 def AddTag(self, tag):
272 self.ValidateTag(tag)
273 tags = self.GetTags()
274 if len(tags) >= constants.MAX_TAGS_PER_OBJ:
275 raise errors.TagError("Too many tags")
276 self.GetTags().add(tag)
278 def RemoveTag(self, tag):
282 self.ValidateTag(tag)
283 tags = self.GetTags()
287 raise errors.TagError("Tag not found")
290 """Taggable-object-specific conversion to standard python types.
292 This replaces the tags set with a list.
295 bo = super(TaggableObject, self).ToDict()
297 tags = bo.get("tags", None)
298 if isinstance(tags, set):
299 bo["tags"] = list(tags)
303 def FromDict(cls, val):
304 """Custom function for instances.
307 obj = super(TaggableObject, cls).FromDict(val)
308 if hasattr(obj, "tags") and isinstance(obj.tags, list):
309 obj.tags = set(obj.tags)
313 class ConfigData(ConfigObject):
314 """Top-level config object."""
315 __slots__ = (["version", "cluster", "nodes", "instances", "serial_no"] +
319 """Custom function for top-level config data.
321 This just replaces the list of instances, nodes and the cluster
322 with standard python types.
325 mydict = super(ConfigData, self).ToDict()
326 mydict["cluster"] = mydict["cluster"].ToDict()
327 for key in "nodes", "instances":
328 mydict[key] = self._ContainerToDicts(mydict[key])
333 def FromDict(cls, val):
334 """Custom function for top-level config data
337 obj = super(ConfigData, cls).FromDict(val)
338 obj.cluster = Cluster.FromDict(obj.cluster)
339 obj.nodes = cls._ContainerFromDicts(obj.nodes, dict, Node)
340 obj.instances = cls._ContainerFromDicts(obj.instances, dict, Instance)
343 def UpgradeConfig(self):
344 """Fill defaults for missing configuration values.
347 self.cluster.UpgradeConfig()
348 for node in self.nodes.values():
350 for instance in self.instances.values():
351 instance.UpgradeConfig()
354 class NIC(ConfigObject):
355 """Config object representing a network card."""
356 __slots__ = ["mac", "ip", "bridge", "nicparams"]
359 def CheckParameterSyntax(cls, nicparams):
360 """Check the given parameters for validity.
362 @type nicparams: dict
363 @param nicparams: dictionary with parameter names/value
364 @raise errors.ConfigurationError: when a parameter is not valid
367 if nicparams[constants.NIC_MODE] not in constants.NIC_VALID_MODES:
368 err = "Invalid nic mode: %s" % nicparams[constants.NIC_MODE]
369 raise errors.ConfigurationError(err)
371 if (nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED and
372 not nicparams[constants.NIC_LINK]):
373 err = "Missing bridged nic link"
374 raise errors.ConfigurationError(err)
376 def UpgradeConfig(self):
377 """Fill defaults for missing configuration values.
380 if self.nicparams is None:
382 if self.bridge is not None:
383 self.nicparams[constants.NIC_MODE] = constants.NIC_MODE_BRIDGED
384 self.nicparams[constants.NIC_LINK] = self.bridge
385 # bridge is no longer used it 2.1. The slot is left there to support
386 # upgrading, but can be removed once upgrades to the current version
387 # straight from 2.0 are deprecated.
388 if self.bridge is not None:
392 class Disk(ConfigObject):
393 """Config object representing a block device."""
394 __slots__ = ["dev_type", "logical_id", "physical_id",
395 "children", "iv_name", "size", "mode"]
397 def CreateOnSecondary(self):
398 """Test if this device needs to be created on a secondary node."""
399 return self.dev_type in (constants.LD_DRBD8, constants.LD_LV)
401 def AssembleOnSecondary(self):
402 """Test if this device needs to be assembled on a secondary node."""
403 return self.dev_type in (constants.LD_DRBD8, constants.LD_LV)
405 def OpenOnSecondary(self):
406 """Test if this device needs to be opened on a secondary node."""
407 return self.dev_type in (constants.LD_LV,)
409 def StaticDevPath(self):
410 """Return the device path if this device type has a static one.
412 Some devices (LVM for example) live always at the same /dev/ path,
413 irrespective of their status. For such devices, we return this
414 path, for others we return None.
416 @warning: The path returned is not a normalized pathname; callers
417 should check that it is a valid path.
420 if self.dev_type == constants.LD_LV:
421 return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1])
424 def ChildrenNeeded(self):
425 """Compute the needed number of children for activation.
427 This method will return either -1 (all children) or a positive
428 number denoting the minimum number of children needed for
429 activation (only mirrored devices will usually return >=0).
431 Currently, only DRBD8 supports diskless activation (therefore we
432 return 0), for all other we keep the previous semantics and return
436 if self.dev_type == constants.LD_DRBD8:
440 def GetNodes(self, node):
441 """This function returns the nodes this device lives on.
443 Given the node on which the parent of the device lives on (or, in
444 case of a top-level device, the primary node of the devices'
445 instance), this function will return a list of nodes on which this
446 devices needs to (or can) be assembled.
449 if self.dev_type in [constants.LD_LV, constants.LD_FILE]:
451 elif self.dev_type in constants.LDS_DRBD:
452 result = [self.logical_id[0], self.logical_id[1]]
453 if node not in result:
454 raise errors.ConfigurationError("DRBD device passed unknown node")
456 raise errors.ProgrammerError("Unhandled device type %s" % self.dev_type)
459 def ComputeNodeTree(self, parent_node):
460 """Compute the node/disk tree for this disk and its children.
462 This method, given the node on which the parent disk lives, will
463 return the list of all (node, disk) pairs which describe the disk
464 tree in the most compact way. For example, a drbd/lvm stack
465 will be returned as (primary_node, drbd) and (secondary_node, drbd)
466 which represents all the top-level devices on the nodes.
469 my_nodes = self.GetNodes(parent_node)
470 result = [(node, self) for node in my_nodes]
471 if not self.children:
474 for node in my_nodes:
475 for child in self.children:
476 child_result = child.ComputeNodeTree(node)
477 if len(child_result) == 1:
478 # child (and all its descendants) is simple, doesn't split
479 # over multiple hosts, so we don't need to describe it, our
480 # own entry for this node describes it completely
483 # check if child nodes differ from my nodes; note that
484 # subdisk can differ from the child itself, and be instead
485 # one of its descendants
486 for subnode, subdisk in child_result:
487 if subnode not in my_nodes:
488 result.append((subnode, subdisk))
489 # otherwise child is under our own node, so we ignore this
490 # entry (but probably the other results in the list will
494 def RecordGrow(self, amount):
495 """Update the size of this disk after growth.
497 This method recurses over the disks's children and updates their
498 size correspondigly. The method needs to be kept in sync with the
499 actual algorithms from bdev.
502 if self.dev_type == constants.LD_LV or self.dev_type == constants.LD_FILE:
504 elif self.dev_type == constants.LD_DRBD8:
506 self.children[0].RecordGrow(amount)
509 raise errors.ProgrammerError("Disk.RecordGrow called for unsupported"
510 " disk type %s" % self.dev_type)
513 """Sets recursively the size to zero for the disk and its children.
517 for child in self.children:
521 def SetPhysicalID(self, target_node, nodes_ip):
522 """Convert the logical ID to the physical ID.
524 This is used only for drbd, which needs ip/port configuration.
526 The routine descends down and updates its children also, because
527 this helps when the only the top device is passed to the remote
531 - target_node: the node we wish to configure for
532 - nodes_ip: a mapping of node name to ip
534 The target_node must exist in in nodes_ip, and must be one of the
535 nodes in the logical ID for each of the DRBD devices encountered
540 for child in self.children:
541 child.SetPhysicalID(target_node, nodes_ip)
543 if self.logical_id is None and self.physical_id is not None:
545 if self.dev_type in constants.LDS_DRBD:
546 pnode, snode, port, pminor, sminor, secret = self.logical_id
547 if target_node not in (pnode, snode):
548 raise errors.ConfigurationError("DRBD device not knowing node %s" %
550 pnode_ip = nodes_ip.get(pnode, None)
551 snode_ip = nodes_ip.get(snode, None)
552 if pnode_ip is None or snode_ip is None:
553 raise errors.ConfigurationError("Can't find primary or secondary node"
554 " for %s" % str(self))
555 p_data = (pnode_ip, port)
556 s_data = (snode_ip, port)
557 if pnode == target_node:
558 self.physical_id = p_data + s_data + (pminor, secret)
559 else: # it must be secondary, we tested above
560 self.physical_id = s_data + p_data + (sminor, secret)
562 self.physical_id = self.logical_id
566 """Disk-specific conversion to standard python types.
568 This replaces the children lists of objects with lists of
569 standard python types.
572 bo = super(Disk, self).ToDict()
574 for attr in ("children",):
575 alist = bo.get(attr, None)
577 bo[attr] = self._ContainerToDicts(alist)
581 def FromDict(cls, val):
582 """Custom function for Disks
585 obj = super(Disk, cls).FromDict(val)
587 obj.children = cls._ContainerFromDicts(obj.children, list, Disk)
588 if obj.logical_id and isinstance(obj.logical_id, list):
589 obj.logical_id = tuple(obj.logical_id)
590 if obj.physical_id and isinstance(obj.physical_id, list):
591 obj.physical_id = tuple(obj.physical_id)
592 if obj.dev_type in constants.LDS_DRBD:
593 # we need a tuple of length six here
594 if len(obj.logical_id) < 6:
595 obj.logical_id += (None,) * (6 - len(obj.logical_id))
599 """Custom str() formatter for disks.
602 if self.dev_type == constants.LD_LV:
603 val = "<LogicalVolume(/dev/%s/%s" % self.logical_id
604 elif self.dev_type in constants.LDS_DRBD:
605 node_a, node_b, port, minor_a, minor_b = self.logical_id[:5]
607 if self.physical_id is None:
610 phy = ("configured as %s:%s %s:%s" %
611 (self.physical_id[0], self.physical_id[1],
612 self.physical_id[2], self.physical_id[3]))
614 val += ("hosts=%s/%d-%s/%d, port=%s, %s, " %
615 (node_a, minor_a, node_b, minor_b, port, phy))
616 if self.children and self.children.count(None) == 0:
617 val += "backend=%s, metadev=%s" % (self.children[0], self.children[1])
619 val += "no local storage"
621 val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
622 (self.dev_type, self.logical_id, self.physical_id, self.children))
623 if self.iv_name is None:
624 val += ", not visible"
626 val += ", visible as /dev/%s" % self.iv_name
627 if isinstance(self.size, int):
628 val += ", size=%dm)>" % self.size
630 val += ", size='%s')>" % (self.size,)
634 """Checks that this disk is correctly configured.
638 if self.mode not in constants.DISK_ACCESS_SET:
639 all_errors.append("Disk access mode '%s' is invalid" % (self.mode, ))
642 def UpgradeConfig(self):
643 """Fill defaults for missing configuration values.
647 for child in self.children:
648 child.UpgradeConfig()
649 # add here config upgrade for this disk
652 class Instance(TaggableObject):
653 """Config object representing an instance."""
668 ] + _TIMESTAMPS + _UUID
670 def _ComputeSecondaryNodes(self):
671 """Compute the list of secondary nodes.
673 This is a simple wrapper over _ComputeAllNodes.
676 all_nodes = set(self._ComputeAllNodes())
677 all_nodes.discard(self.primary_node)
678 return tuple(all_nodes)
680 secondary_nodes = property(_ComputeSecondaryNodes, None, None,
681 "List of secondary nodes")
683 def _ComputeAllNodes(self):
684 """Compute the list of all nodes.
686 Since the data is already there (in the drbd disks), keeping it as
687 a separate normal attribute is redundant and if not properly
688 synchronised can cause problems. Thus it's better to compute it
692 def _Helper(nodes, device):
693 """Recursively computes nodes given a top device."""
694 if device.dev_type in constants.LDS_DRBD:
695 nodea, nodeb = device.logical_id[:2]
699 for child in device.children:
700 _Helper(nodes, child)
703 all_nodes.add(self.primary_node)
704 for device in self.disks:
705 _Helper(all_nodes, device)
706 return tuple(all_nodes)
708 all_nodes = property(_ComputeAllNodes, None, None,
709 "List of all nodes of the instance")
711 def MapLVsByNode(self, lvmap=None, devs=None, node=None):
712 """Provide a mapping of nodes to LVs this instance owns.
714 This function figures out what logical volumes should belong on
715 which nodes, recursing through a device tree.
717 @param lvmap: optional dictionary to receive the
718 'node' : ['lv', ...] data.
720 @return: None if lvmap arg is given, otherwise, a dictionary
721 of the form { 'nodename' : ['volume1', 'volume2', ...], ... }
725 node = self.primary_node
728 lvmap = { node : [] }
731 if not node in lvmap:
739 if dev.dev_type == constants.LD_LV:
740 lvmap[node].append(dev.logical_id[1])
742 elif dev.dev_type in constants.LDS_DRBD:
744 self.MapLVsByNode(lvmap, dev.children, dev.logical_id[0])
745 self.MapLVsByNode(lvmap, dev.children, dev.logical_id[1])
748 self.MapLVsByNode(lvmap, dev.children, node)
752 def FindDisk(self, idx):
753 """Find a disk given having a specified index.
755 This is just a wrapper that does validation of the index.
758 @param idx: the disk index
760 @return: the corresponding disk
761 @raise errors.OpPrereqError: when the given index is not valid
766 return self.disks[idx]
767 except (TypeError, ValueError), err:
768 raise errors.OpPrereqError("Invalid disk index: '%s'" % str(err),
771 raise errors.OpPrereqError("Invalid disk index: %d (instace has disks"
772 " 0 to %d" % (idx, len(self.disks)),
776 """Instance-specific conversion to standard python types.
778 This replaces the children lists of objects with lists of standard
782 bo = super(Instance, self).ToDict()
784 for attr in "nics", "disks":
785 alist = bo.get(attr, None)
787 nlist = self._ContainerToDicts(alist)
794 def FromDict(cls, val):
795 """Custom function for instances.
798 obj = super(Instance, cls).FromDict(val)
799 obj.nics = cls._ContainerFromDicts(obj.nics, list, NIC)
800 obj.disks = cls._ContainerFromDicts(obj.disks, list, Disk)
803 def UpgradeConfig(self):
804 """Fill defaults for missing configuration values.
807 for nic in self.nics:
809 for disk in self.disks:
812 for key in constants.HVC_GLOBALS:
814 del self.hvparams[key]
817 if self.osparams is None:
821 class OS(ConfigObject):
822 """Config object representing an operating system.
824 @type supported_parameters: list
825 @ivar supported_parameters: a list of tuples, name and description,
826 containing the supported parameters by this OS
838 "supported_variants",
839 "supported_parameters",
843 class Node(TaggableObject):
844 """Config object representing a node."""
853 ] + _TIMESTAMPS + _UUID
856 class Cluster(TaggableObject):
857 """Config object representing the cluster."""
866 "default_hypervisor",
872 "enabled_hypervisors",
878 "candidate_pool_size",
881 "maintain_node_health",
883 ] + _TIMESTAMPS + _UUID
885 def UpgradeConfig(self):
886 """Fill defaults for missing configuration values.
889 # pylint: disable-msg=E0203
890 # because these are "defined" via slots, not manually
891 if self.hvparams is None:
892 self.hvparams = constants.HVC_DEFAULTS
894 for hypervisor in self.hvparams:
895 self.hvparams[hypervisor] = FillDict(
896 constants.HVC_DEFAULTS[hypervisor], self.hvparams[hypervisor])
898 if self.os_hvp is None:
901 # osparams added before 2.2
902 if self.osparams is None:
905 self.beparams = UpgradeGroupedParams(self.beparams,
906 constants.BEC_DEFAULTS)
907 migrate_default_bridge = not self.nicparams
908 self.nicparams = UpgradeGroupedParams(self.nicparams,
909 constants.NICC_DEFAULTS)
910 if migrate_default_bridge:
911 self.nicparams[constants.PP_DEFAULT][constants.NIC_LINK] = \
914 if self.modify_etc_hosts is None:
915 self.modify_etc_hosts = True
917 if self.modify_ssh_setup is None:
918 self.modify_ssh_setup = True
920 # default_bridge is no longer used it 2.1. The slot is left there to
921 # support auto-upgrading. It can be removed once we decide to deprecate
922 # upgrading straight from 2.0.
923 if self.default_bridge is not None:
924 self.default_bridge = None
926 # default_hypervisor is just the first enabled one in 2.1. This slot and
927 # code can be removed once upgrading straight from 2.0 is deprecated.
928 if self.default_hypervisor is not None:
929 self.enabled_hypervisors = ([self.default_hypervisor] +
930 [hvname for hvname in self.enabled_hypervisors
931 if hvname != self.default_hypervisor])
932 self.default_hypervisor = None
934 # maintain_node_health added after 2.1.1
935 if self.maintain_node_health is None:
936 self.maintain_node_health = False
938 if self.uid_pool is None:
942 """Custom function for cluster.
945 mydict = super(Cluster, self).ToDict()
946 mydict["tcpudp_port_pool"] = list(self.tcpudp_port_pool)
950 def FromDict(cls, val):
951 """Custom function for cluster.
954 obj = super(Cluster, cls).FromDict(val)
955 if not isinstance(obj.tcpudp_port_pool, set):
956 obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
959 def GetHVDefaults(self, hypervisor, os_name=None, skip_keys=None):
960 """Get the default hypervisor parameters for the cluster.
962 @param hypervisor: the hypervisor name
963 @param os_name: if specified, we'll also update the defaults for this OS
964 @param skip_keys: if passed, list of keys not to use
965 @return: the defaults dict
968 if skip_keys is None:
971 fill_stack = [self.hvparams.get(hypervisor, {})]
972 if os_name is not None:
973 os_hvp = self.os_hvp.get(os_name, {}).get(hypervisor, {})
974 fill_stack.append(os_hvp)
977 for o_dict in fill_stack:
978 ret_dict = FillDict(ret_dict, o_dict, skip_keys=skip_keys)
982 def SimpleFillHV(self, hv_name, os_name, hvparams, skip_globals=False):
983 """Fill a given hvparams dict with cluster defaults.
985 @type hv_name: string
986 @param hv_name: the hypervisor to use
987 @type os_name: string
988 @param os_name: the OS to use for overriding the hypervisor defaults
989 @type skip_globals: boolean
990 @param skip_globals: if True, the global hypervisor parameters will
993 @return: a copy of the given hvparams with missing keys filled from
998 skip_keys = constants.HVC_GLOBALS
1002 def_dict = self.GetHVDefaults(hv_name, os_name, skip_keys=skip_keys)
1003 return FillDict(def_dict, hvparams, skip_keys=skip_keys)
1005 def FillHV(self, instance, skip_globals=False):
1006 """Fill an instance's hvparams dict with cluster defaults.
1008 @type instance: L{objects.Instance}
1009 @param instance: the instance parameter to fill
1010 @type skip_globals: boolean
1011 @param skip_globals: if True, the global hypervisor parameters will
1014 @return: a copy of the instance's hvparams with missing keys filled from
1015 the cluster defaults
1018 return self.SimpleFillHV(instance.hypervisor, instance.os,
1019 instance.hvparams, skip_globals)
1021 def SimpleFillBE(self, beparams):
1022 """Fill a given beparams dict with cluster defaults.
1024 @type beparams: dict
1025 @param beparams: the dict to fill
1027 @return: a copy of the passed in beparams with missing keys filled
1028 from the cluster defaults
1031 return FillDict(self.beparams.get(constants.PP_DEFAULT, {}), beparams)
1033 def FillBE(self, instance):
1034 """Fill an instance's beparams dict with cluster defaults.
1036 @type instance: L{objects.Instance}
1037 @param instance: the instance parameter to fill
1039 @return: a copy of the instance's beparams with missing keys filled from
1040 the cluster defaults
1043 return self.SimpleFillBE(instance.beparams)
1045 def SimpleFillNIC(self, nicparams):
1046 """Fill a given nicparams dict with cluster defaults.
1048 @type nicparams: dict
1049 @param nicparams: the dict to fill
1051 @return: a copy of the passed in nicparams with missing keys filled
1052 from the cluster defaults
1055 return FillDict(self.nicparams.get(constants.PP_DEFAULT, {}), nicparams)
1057 def SimpleFillOS(self, os_name, os_params):
1058 """Fill an instance's osparams dict with cluster defaults.
1060 @type os_name: string
1061 @param os_name: the OS name to use
1062 @type os_params: dict
1063 @param os_params: the dict to fill with default values
1065 @return: a copy of the instance's osparams with missing keys filled from
1066 the cluster defaults
1069 name_only = os_name.split("+", 1)[0]
1071 result = self.osparams.get(name_only, {})
1073 result = FillDict(result, self.osparams.get(os_name, {}))
1075 return FillDict(result, os_params)
1078 class BlockDevStatus(ConfigObject):
1079 """Config object representing the status of a block device."""
1091 class ImportExportStatus(ConfigObject):
1092 """Config object representing the status of an import or export."""
1098 "progress_throughput",
1106 class ImportExportOptions(ConfigObject):
1107 """Options for import/export daemon
1109 @ivar key_name: X509 key name (None for cluster certificate)
1110 @ivar ca_pem: Remote peer CA in PEM format (None for cluster certificate)
1111 @ivar compress: Compression method (one of L{constants.IEC_ALL})
1112 @ivar magic: Used to ensure the connection goes to the right disk
1123 class ConfdRequest(ConfigObject):
1124 """Object holding a confd request.
1126 @ivar protocol: confd protocol version
1127 @ivar type: confd query type
1128 @ivar query: query request
1129 @ivar rsalt: requested reply salt
1140 class ConfdReply(ConfigObject):
1141 """Object holding a confd reply.
1143 @ivar protocol: confd protocol version
1144 @ivar status: reply status code (ok, error)
1145 @ivar answer: confd query reply
1146 @ivar serial: configuration serial number
1157 class SerializableConfigParser(ConfigParser.SafeConfigParser):
1158 """Simple wrapper over ConfigParse that allows serialization.
1160 This class is basically ConfigParser.SafeConfigParser with two
1161 additional methods that allow it to serialize/unserialize to/from a
1166 """Dump this instance and return the string representation."""
1169 return buf.getvalue()
1172 def Loads(cls, data):
1173 """Load data from a string."""
1174 buf = StringIO(data)