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#
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# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Transportable objects for Ganeti.
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This module provides small, mostly data-only objects which are safe to
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pass to and from external parties.
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"""
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# pylint: disable-msg=E0203,W0201
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# E0203: Access to member %r before its definition, since we use
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# objects.py which doesn't explicitely initialise its members
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# W0201: Attribute '%s' defined outside __init__
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import ConfigParser |
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import re |
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import copy |
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import time |
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from cStringIO import StringIO |
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from ganeti import errors |
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from ganeti import constants |
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from socket import AF_INET |
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__all__ = ["ConfigObject", "ConfigData", "NIC", "Disk", "Instance", |
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"OS", "Node", "NodeGroup", "Cluster", "FillDict"] |
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_TIMESTAMPS = ["ctime", "mtime"] |
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_UUID = ["uuid"]
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def FillDict(defaults_dict, custom_dict, skip_keys=None): |
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"""Basic function to apply settings on top a default dict.
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@type defaults_dict: dict
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@param defaults_dict: dictionary holding the default values
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@type custom_dict: dict
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@param custom_dict: dictionary holding customized value
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@type skip_keys: list
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@param skip_keys: which keys not to fill
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@rtype: dict
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@return: dict with the 'full' values
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"""
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ret_dict = copy.deepcopy(defaults_dict) |
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ret_dict.update(custom_dict) |
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if skip_keys:
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for k in skip_keys: |
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try:
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del ret_dict[k]
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except KeyError: |
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pass
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return ret_dict
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def UpgradeGroupedParams(target, defaults): |
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"""Update all groups for the target parameter.
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@type target: dict of dicts
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@param target: {group: {parameter: value}}
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@type defaults: dict
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@param defaults: default parameter values
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"""
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if target is None: |
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target = {constants.PP_DEFAULT: defaults} |
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else:
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for group in target: |
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target[group] = FillDict(defaults, target[group]) |
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return target
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class ConfigObject(object): |
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"""A generic config object.
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It has the following properties:
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- provides somewhat safe recursive unpickling and pickling for its classes
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- unset attributes which are defined in slots are always returned
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as None instead of raising an error
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Classes derived from this must always declare __slots__ (we use many
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config objects and the memory reduction is useful)
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"""
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__slots__ = [] |
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def __init__(self, **kwargs): |
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for k, v in kwargs.iteritems(): |
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setattr(self, k, v) |
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def __getattr__(self, name): |
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if name not in self._all_slots(): |
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raise AttributeError("Invalid object attribute %s.%s" % |
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(type(self).__name__, name)) |
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return None |
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def __setstate__(self, state): |
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slots = self._all_slots()
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for name in state: |
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if name in slots: |
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setattr(self, name, state[name]) |
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@classmethod
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def _all_slots(cls): |
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"""Compute the list of all declared slots for a class.
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"""
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slots = [] |
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for parent in cls.__mro__: |
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slots.extend(getattr(parent, "__slots__", [])) |
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return slots
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def ToDict(self): |
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"""Convert to a dict holding only standard python types.
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The generic routine just dumps all of this object's attributes in
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a dict. It does not work if the class has children who are
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ConfigObjects themselves (e.g. the nics list in an Instance), in
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which case the object should subclass the function in order to
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make sure all objects returned are only standard python types.
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"""
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result = {} |
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for name in self._all_slots(): |
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value = getattr(self, name, None) |
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if value is not None: |
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result[name] = value |
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return result
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__getstate__ = ToDict |
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@classmethod
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def FromDict(cls, val): |
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"""Create an object from a dictionary.
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This generic routine takes a dict, instantiates a new instance of
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the given class, and sets attributes based on the dict content.
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As for `ToDict`, this does not work if the class has children
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who are ConfigObjects themselves (e.g. the nics list in an
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Instance), in which case the object should subclass the function
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and alter the objects.
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"""
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if not isinstance(val, dict): |
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raise errors.ConfigurationError("Invalid object passed to FromDict:" |
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" expected dict, got %s" % type(val)) |
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val_str = dict([(str(k), v) for k, v in val.iteritems()]) |
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obj = cls(**val_str) # pylint: disable-msg=W0142
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return obj
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@staticmethod
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def _ContainerToDicts(container): |
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"""Convert the elements of a container to standard python types.
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This method converts a container with elements derived from
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ConfigData to standard python types. If the container is a dict,
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we don't touch the keys, only the values.
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"""
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if isinstance(container, dict): |
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ret = dict([(k, v.ToDict()) for k, v in container.iteritems()]) |
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elif isinstance(container, (list, tuple, set, frozenset)): |
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ret = [elem.ToDict() for elem in container] |
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else:
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raise TypeError("Invalid type %s passed to _ContainerToDicts" % |
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type(container))
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return ret
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@staticmethod
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def _ContainerFromDicts(source, c_type, e_type): |
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"""Convert a container from standard python types.
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This method converts a container with standard python types to
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ConfigData objects. If the container is a dict, we don't touch the
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keys, only the values.
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"""
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if not isinstance(c_type, type): |
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raise TypeError("Container type %s passed to _ContainerFromDicts is" |
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" not a type" % type(c_type)) |
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if source is None: |
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source = c_type() |
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if c_type is dict: |
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ret = dict([(k, e_type.FromDict(v)) for k, v in source.iteritems()]) |
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elif c_type in (list, tuple, set, frozenset): |
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ret = c_type([e_type.FromDict(elem) for elem in source]) |
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else:
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raise TypeError("Invalid container type %s passed to" |
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" _ContainerFromDicts" % c_type)
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return ret
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def Copy(self): |
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"""Makes a deep copy of the current object and its children.
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"""
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dict_form = self.ToDict()
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clone_obj = self.__class__.FromDict(dict_form)
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return clone_obj
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def __repr__(self): |
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"""Implement __repr__ for ConfigObjects."""
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return repr(self.ToDict()) |
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def UpgradeConfig(self): |
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"""Fill defaults for missing configuration values.
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This method will be called at configuration load time, and its
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implementation will be object dependent.
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"""
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pass
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class TaggableObject(ConfigObject): |
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"""An generic class supporting tags.
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"""
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__slots__ = ["tags"]
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VALID_TAG_RE = re.compile("^[\w.+*/:@-]+$")
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@classmethod
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def ValidateTag(cls, tag): |
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"""Check if a tag is valid.
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If the tag is invalid, an errors.TagError will be raised. The
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function has no return value.
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"""
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if not isinstance(tag, basestring): |
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raise errors.TagError("Invalid tag type (not a string)") |
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if len(tag) > constants.MAX_TAG_LEN: |
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raise errors.TagError("Tag too long (>%d characters)" % |
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constants.MAX_TAG_LEN) |
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if not tag: |
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raise errors.TagError("Tags cannot be empty") |
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if not cls.VALID_TAG_RE.match(tag): |
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raise errors.TagError("Tag contains invalid characters") |
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def GetTags(self): |
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"""Return the tags list.
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"""
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tags = getattr(self, "tags", None) |
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if tags is None: |
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tags = self.tags = set() |
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return tags
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def AddTag(self, tag): |
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"""Add a new tag.
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"""
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self.ValidateTag(tag)
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tags = self.GetTags()
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if len(tags) >= constants.MAX_TAGS_PER_OBJ: |
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raise errors.TagError("Too many tags") |
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self.GetTags().add(tag)
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def RemoveTag(self, tag): |
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"""Remove a tag.
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"""
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self.ValidateTag(tag)
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tags = self.GetTags()
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try:
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tags.remove(tag) |
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except KeyError: |
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raise errors.TagError("Tag not found") |
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def ToDict(self): |
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"""Taggable-object-specific conversion to standard python types.
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This replaces the tags set with a list.
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"""
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bo = super(TaggableObject, self).ToDict() |
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tags = bo.get("tags", None) |
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if isinstance(tags, set): |
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bo["tags"] = list(tags) |
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return bo
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@classmethod
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def FromDict(cls, val): |
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"""Custom function for instances.
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"""
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obj = super(TaggableObject, cls).FromDict(val)
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if hasattr(obj, "tags") and isinstance(obj.tags, list): |
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obj.tags = set(obj.tags)
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return obj
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class ConfigData(ConfigObject): |
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"""Top-level config object."""
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__slots__ = [ |
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"version",
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"cluster",
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"nodes",
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"nodegroups",
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"instances",
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"serial_no",
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] + _TIMESTAMPS |
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def ToDict(self): |
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"""Custom function for top-level config data.
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This just replaces the list of instances, nodes and the cluster
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with standard python types.
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"""
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mydict = super(ConfigData, self).ToDict() |
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mydict["cluster"] = mydict["cluster"].ToDict() |
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for key in "nodes", "instances", "nodegroups": |
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mydict[key] = self._ContainerToDicts(mydict[key])
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return mydict
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@classmethod
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def FromDict(cls, val): |
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"""Custom function for top-level config data
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"""
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obj = super(ConfigData, cls).FromDict(val)
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obj.cluster = Cluster.FromDict(obj.cluster) |
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obj.nodes = cls._ContainerFromDicts(obj.nodes, dict, Node)
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obj.instances = cls._ContainerFromDicts(obj.instances, dict, Instance)
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obj.nodegroups = cls._ContainerFromDicts(obj.nodegroups, dict, NodeGroup)
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return obj
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def HasAnyDiskOfType(self, dev_type): |
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"""Check if in there is at disk of the given type in the configuration.
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@type dev_type: L{constants.LDS_BLOCK}
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@param dev_type: the type to look for
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@rtype: boolean
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@return: boolean indicating if a disk of the given type was found or not
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"""
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for instance in self.instances.values(): |
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for disk in instance.disks: |
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if disk.IsBasedOnDiskType(dev_type):
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return True |
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return False |
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def UpgradeConfig(self): |
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"""Fill defaults for missing configuration values.
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"""
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self.cluster.UpgradeConfig()
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for node in self.nodes.values(): |
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node.UpgradeConfig() |
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for instance in self.instances.values(): |
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instance.UpgradeConfig() |
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if self.nodegroups is None: |
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self.nodegroups = {}
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for nodegroup in self.nodegroups.values(): |
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nodegroup.UpgradeConfig() |
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if self.cluster.drbd_usermode_helper is None: |
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# To decide if we set an helper let's check if at least one instance has
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# a DRBD disk. This does not cover all the possible scenarios but it
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# gives a good approximation.
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if self.HasAnyDiskOfType(constants.LD_DRBD8): |
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self.cluster.drbd_usermode_helper = constants.DEFAULT_DRBD_HELPER
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class NIC(ConfigObject): |
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"""Config object representing a network card."""
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__slots__ = ["mac", "ip", "nicparams"] |
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@classmethod
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def CheckParameterSyntax(cls, nicparams): |
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"""Check the given parameters for validity.
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@type nicparams: dict
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@param nicparams: dictionary with parameter names/value
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@raise errors.ConfigurationError: when a parameter is not valid
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"""
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if nicparams[constants.NIC_MODE] not in constants.NIC_VALID_MODES: |
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err = "Invalid nic mode: %s" % nicparams[constants.NIC_MODE]
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raise errors.ConfigurationError(err)
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if (nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED and |
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not nicparams[constants.NIC_LINK]):
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err = "Missing bridged nic link"
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raise errors.ConfigurationError(err)
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class Disk(ConfigObject): |
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"""Config object representing a block device."""
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__slots__ = ["dev_type", "logical_id", "physical_id", |
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"children", "iv_name", "size", "mode"] |
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def CreateOnSecondary(self): |
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"""Test if this device needs to be created on a secondary node."""
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return self.dev_type in (constants.LD_DRBD8, constants.LD_LV) |
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def AssembleOnSecondary(self): |
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"""Test if this device needs to be assembled on a secondary node."""
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return self.dev_type in (constants.LD_DRBD8, constants.LD_LV) |
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def OpenOnSecondary(self): |
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"""Test if this device needs to be opened on a secondary node."""
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return self.dev_type in (constants.LD_LV,) |
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def StaticDevPath(self): |
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"""Return the device path if this device type has a static one.
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Some devices (LVM for example) live always at the same /dev/ path,
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irrespective of their status. For such devices, we return this
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path, for others we return None.
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@warning: The path returned is not a normalized pathname; callers
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should check that it is a valid path.
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"""
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if self.dev_type == constants.LD_LV: |
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return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1]) |
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return None |
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def ChildrenNeeded(self): |
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"""Compute the needed number of children for activation.
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This method will return either -1 (all children) or a positive
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number denoting the minimum number of children needed for
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activation (only mirrored devices will usually return >=0).
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Currently, only DRBD8 supports diskless activation (therefore we
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return 0), for all other we keep the previous semantics and return
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-1.
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"""
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if self.dev_type == constants.LD_DRBD8: |
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return 0 |
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return -1 |
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def IsBasedOnDiskType(self, dev_type): |
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"""Check if the disk or its children are based on the given type.
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@type dev_type: L{constants.LDS_BLOCK}
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@param dev_type: the type to look for
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@rtype: boolean
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@return: boolean indicating if a device of the given type was found or not
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"""
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if self.children: |
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for child in self.children: |
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if child.IsBasedOnDiskType(dev_type):
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return True |
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return self.dev_type == dev_type |
476 |
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def GetNodes(self, node): |
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"""This function returns the nodes this device lives on.
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Given the node on which the parent of the device lives on (or, in
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case of a top-level device, the primary node of the devices'
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instance), this function will return a list of nodes on which this
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devices needs to (or can) be assembled.
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"""
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if self.dev_type in [constants.LD_LV, constants.LD_FILE]: |
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result = [node] |
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elif self.dev_type in constants.LDS_DRBD: |
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result = [self.logical_id[0], self.logical_id[1]] |
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if node not in result: |
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raise errors.ConfigurationError("DRBD device passed unknown node") |
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else:
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raise errors.ProgrammerError("Unhandled device type %s" % self.dev_type) |
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return result
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def ComputeNodeTree(self, parent_node): |
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"""Compute the node/disk tree for this disk and its children.
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This method, given the node on which the parent disk lives, will
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return the list of all (node, disk) pairs which describe the disk
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tree in the most compact way. For example, a drbd/lvm stack
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will be returned as (primary_node, drbd) and (secondary_node, drbd)
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which represents all the top-level devices on the nodes.
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"""
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my_nodes = self.GetNodes(parent_node)
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result = [(node, self) for node in my_nodes] |
508 |
if not self.children: |
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# leaf device
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return result
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for node in my_nodes: |
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for child in self.children: |
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child_result = child.ComputeNodeTree(node) |
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if len(child_result) == 1: |
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# child (and all its descendants) is simple, doesn't split
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# over multiple hosts, so we don't need to describe it, our
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# own entry for this node describes it completely
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continue
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else:
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# check if child nodes differ from my nodes; note that
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# subdisk can differ from the child itself, and be instead
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# one of its descendants
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for subnode, subdisk in child_result: |
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if subnode not in my_nodes: |
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result.append((subnode, subdisk)) |
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# otherwise child is under our own node, so we ignore this
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# entry (but probably the other results in the list will
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# be different)
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return result
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def ComputeGrowth(self, amount): |
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"""Compute the per-VG growth requirements.
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533 |
|
534 |
This only works for VG-based disks.
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535 |
|
536 |
@type amount: integer
|
537 |
@param amount: the desired increase in (user-visible) disk space
|
538 |
@rtype: dict
|
539 |
@return: a dictionary of volume-groups and the required size
|
540 |
|
541 |
"""
|
542 |
if self.dev_type == constants.LD_LV: |
543 |
return {self.logical_id[0]: amount} |
544 |
elif self.dev_type == constants.LD_DRBD8: |
545 |
if self.children: |
546 |
return self.children[0].ComputeGrowth(amount) |
547 |
else:
|
548 |
return {}
|
549 |
else:
|
550 |
# Other disk types do not require VG space
|
551 |
return {}
|
552 |
|
553 |
def RecordGrow(self, amount): |
554 |
"""Update the size of this disk after growth.
|
555 |
|
556 |
This method recurses over the disks's children and updates their
|
557 |
size correspondigly. The method needs to be kept in sync with the
|
558 |
actual algorithms from bdev.
|
559 |
|
560 |
"""
|
561 |
if self.dev_type == constants.LD_LV or self.dev_type == constants.LD_FILE: |
562 |
self.size += amount
|
563 |
elif self.dev_type == constants.LD_DRBD8: |
564 |
if self.children: |
565 |
self.children[0].RecordGrow(amount) |
566 |
self.size += amount
|
567 |
else:
|
568 |
raise errors.ProgrammerError("Disk.RecordGrow called for unsupported" |
569 |
" disk type %s" % self.dev_type) |
570 |
|
571 |
def UnsetSize(self): |
572 |
"""Sets recursively the size to zero for the disk and its children.
|
573 |
|
574 |
"""
|
575 |
if self.children: |
576 |
for child in self.children: |
577 |
child.UnsetSize() |
578 |
self.size = 0 |
579 |
|
580 |
def SetPhysicalID(self, target_node, nodes_ip): |
581 |
"""Convert the logical ID to the physical ID.
|
582 |
|
583 |
This is used only for drbd, which needs ip/port configuration.
|
584 |
|
585 |
The routine descends down and updates its children also, because
|
586 |
this helps when the only the top device is passed to the remote
|
587 |
node.
|
588 |
|
589 |
Arguments:
|
590 |
- target_node: the node we wish to configure for
|
591 |
- nodes_ip: a mapping of node name to ip
|
592 |
|
593 |
The target_node must exist in in nodes_ip, and must be one of the
|
594 |
nodes in the logical ID for each of the DRBD devices encountered
|
595 |
in the disk tree.
|
596 |
|
597 |
"""
|
598 |
if self.children: |
599 |
for child in self.children: |
600 |
child.SetPhysicalID(target_node, nodes_ip) |
601 |
|
602 |
if self.logical_id is None and self.physical_id is not None: |
603 |
return
|
604 |
if self.dev_type in constants.LDS_DRBD: |
605 |
pnode, snode, port, pminor, sminor, secret = self.logical_id
|
606 |
if target_node not in (pnode, snode): |
607 |
raise errors.ConfigurationError("DRBD device not knowing node %s" % |
608 |
target_node) |
609 |
pnode_ip = nodes_ip.get(pnode, None)
|
610 |
snode_ip = nodes_ip.get(snode, None)
|
611 |
if pnode_ip is None or snode_ip is None: |
612 |
raise errors.ConfigurationError("Can't find primary or secondary node" |
613 |
" for %s" % str(self)) |
614 |
p_data = (pnode_ip, port) |
615 |
s_data = (snode_ip, port) |
616 |
if pnode == target_node:
|
617 |
self.physical_id = p_data + s_data + (pminor, secret)
|
618 |
else: # it must be secondary, we tested above |
619 |
self.physical_id = s_data + p_data + (sminor, secret)
|
620 |
else:
|
621 |
self.physical_id = self.logical_id |
622 |
return
|
623 |
|
624 |
def ToDict(self): |
625 |
"""Disk-specific conversion to standard python types.
|
626 |
|
627 |
This replaces the children lists of objects with lists of
|
628 |
standard python types.
|
629 |
|
630 |
"""
|
631 |
bo = super(Disk, self).ToDict() |
632 |
|
633 |
for attr in ("children",): |
634 |
alist = bo.get(attr, None)
|
635 |
if alist:
|
636 |
bo[attr] = self._ContainerToDicts(alist)
|
637 |
return bo
|
638 |
|
639 |
@classmethod
|
640 |
def FromDict(cls, val): |
641 |
"""Custom function for Disks
|
642 |
|
643 |
"""
|
644 |
obj = super(Disk, cls).FromDict(val)
|
645 |
if obj.children:
|
646 |
obj.children = cls._ContainerFromDicts(obj.children, list, Disk)
|
647 |
if obj.logical_id and isinstance(obj.logical_id, list): |
648 |
obj.logical_id = tuple(obj.logical_id)
|
649 |
if obj.physical_id and isinstance(obj.physical_id, list): |
650 |
obj.physical_id = tuple(obj.physical_id)
|
651 |
if obj.dev_type in constants.LDS_DRBD: |
652 |
# we need a tuple of length six here
|
653 |
if len(obj.logical_id) < 6: |
654 |
obj.logical_id += (None,) * (6 - len(obj.logical_id)) |
655 |
return obj
|
656 |
|
657 |
def __str__(self): |
658 |
"""Custom str() formatter for disks.
|
659 |
|
660 |
"""
|
661 |
if self.dev_type == constants.LD_LV: |
662 |
val = "<LogicalVolume(/dev/%s/%s" % self.logical_id |
663 |
elif self.dev_type in constants.LDS_DRBD: |
664 |
node_a, node_b, port, minor_a, minor_b = self.logical_id[:5] |
665 |
val = "<DRBD8("
|
666 |
if self.physical_id is None: |
667 |
phy = "unconfigured"
|
668 |
else:
|
669 |
phy = ("configured as %s:%s %s:%s" %
|
670 |
(self.physical_id[0], self.physical_id[1], |
671 |
self.physical_id[2], self.physical_id[3])) |
672 |
|
673 |
val += ("hosts=%s/%d-%s/%d, port=%s, %s, " %
|
674 |
(node_a, minor_a, node_b, minor_b, port, phy)) |
675 |
if self.children and self.children.count(None) == 0: |
676 |
val += "backend=%s, metadev=%s" % (self.children[0], self.children[1]) |
677 |
else:
|
678 |
val += "no local storage"
|
679 |
else:
|
680 |
val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
|
681 |
(self.dev_type, self.logical_id, self.physical_id, self.children)) |
682 |
if self.iv_name is None: |
683 |
val += ", not visible"
|
684 |
else:
|
685 |
val += ", visible as /dev/%s" % self.iv_name |
686 |
if isinstance(self.size, int): |
687 |
val += ", size=%dm)>" % self.size |
688 |
else:
|
689 |
val += ", size='%s')>" % (self.size,) |
690 |
return val
|
691 |
|
692 |
def Verify(self): |
693 |
"""Checks that this disk is correctly configured.
|
694 |
|
695 |
"""
|
696 |
all_errors = [] |
697 |
if self.mode not in constants.DISK_ACCESS_SET: |
698 |
all_errors.append("Disk access mode '%s' is invalid" % (self.mode, )) |
699 |
return all_errors
|
700 |
|
701 |
def UpgradeConfig(self): |
702 |
"""Fill defaults for missing configuration values.
|
703 |
|
704 |
"""
|
705 |
if self.children: |
706 |
for child in self.children: |
707 |
child.UpgradeConfig() |
708 |
# add here config upgrade for this disk
|
709 |
|
710 |
|
711 |
class Instance(TaggableObject): |
712 |
"""Config object representing an instance."""
|
713 |
__slots__ = [ |
714 |
"name",
|
715 |
"primary_node",
|
716 |
"os",
|
717 |
"hypervisor",
|
718 |
"hvparams",
|
719 |
"beparams",
|
720 |
"osparams",
|
721 |
"admin_up",
|
722 |
"nics",
|
723 |
"disks",
|
724 |
"disk_template",
|
725 |
"network_port",
|
726 |
"serial_no",
|
727 |
] + _TIMESTAMPS + _UUID |
728 |
|
729 |
def _ComputeSecondaryNodes(self): |
730 |
"""Compute the list of secondary nodes.
|
731 |
|
732 |
This is a simple wrapper over _ComputeAllNodes.
|
733 |
|
734 |
"""
|
735 |
all_nodes = set(self._ComputeAllNodes()) |
736 |
all_nodes.discard(self.primary_node)
|
737 |
return tuple(all_nodes) |
738 |
|
739 |
secondary_nodes = property(_ComputeSecondaryNodes, None, None, |
740 |
"List of secondary nodes")
|
741 |
|
742 |
def _ComputeAllNodes(self): |
743 |
"""Compute the list of all nodes.
|
744 |
|
745 |
Since the data is already there (in the drbd disks), keeping it as
|
746 |
a separate normal attribute is redundant and if not properly
|
747 |
synchronised can cause problems. Thus it's better to compute it
|
748 |
dynamically.
|
749 |
|
750 |
"""
|
751 |
def _Helper(nodes, device): |
752 |
"""Recursively computes nodes given a top device."""
|
753 |
if device.dev_type in constants.LDS_DRBD: |
754 |
nodea, nodeb = device.logical_id[:2]
|
755 |
nodes.add(nodea) |
756 |
nodes.add(nodeb) |
757 |
if device.children:
|
758 |
for child in device.children: |
759 |
_Helper(nodes, child) |
760 |
|
761 |
all_nodes = set()
|
762 |
all_nodes.add(self.primary_node)
|
763 |
for device in self.disks: |
764 |
_Helper(all_nodes, device) |
765 |
return tuple(all_nodes) |
766 |
|
767 |
all_nodes = property(_ComputeAllNodes, None, None, |
768 |
"List of all nodes of the instance")
|
769 |
|
770 |
def MapLVsByNode(self, lvmap=None, devs=None, node=None): |
771 |
"""Provide a mapping of nodes to LVs this instance owns.
|
772 |
|
773 |
This function figures out what logical volumes should belong on
|
774 |
which nodes, recursing through a device tree.
|
775 |
|
776 |
@param lvmap: optional dictionary to receive the
|
777 |
'node' : ['lv', ...] data.
|
778 |
|
779 |
@return: None if lvmap arg is given, otherwise, a dictionary of
|
780 |
the form { 'nodename' : ['volume1', 'volume2', ...], ... };
|
781 |
volumeN is of the form "vg_name/lv_name", compatible with
|
782 |
GetVolumeList()
|
783 |
|
784 |
"""
|
785 |
if node == None: |
786 |
node = self.primary_node
|
787 |
|
788 |
if lvmap is None: |
789 |
lvmap = { node : [] } |
790 |
ret = lvmap |
791 |
else:
|
792 |
if not node in lvmap: |
793 |
lvmap[node] = [] |
794 |
ret = None
|
795 |
|
796 |
if not devs: |
797 |
devs = self.disks
|
798 |
|
799 |
for dev in devs: |
800 |
if dev.dev_type == constants.LD_LV:
|
801 |
lvmap[node].append(dev.logical_id[0]+"/"+dev.logical_id[1]) |
802 |
|
803 |
elif dev.dev_type in constants.LDS_DRBD: |
804 |
if dev.children:
|
805 |
self.MapLVsByNode(lvmap, dev.children, dev.logical_id[0]) |
806 |
self.MapLVsByNode(lvmap, dev.children, dev.logical_id[1]) |
807 |
|
808 |
elif dev.children:
|
809 |
self.MapLVsByNode(lvmap, dev.children, node)
|
810 |
|
811 |
return ret
|
812 |
|
813 |
def FindDisk(self, idx): |
814 |
"""Find a disk given having a specified index.
|
815 |
|
816 |
This is just a wrapper that does validation of the index.
|
817 |
|
818 |
@type idx: int
|
819 |
@param idx: the disk index
|
820 |
@rtype: L{Disk}
|
821 |
@return: the corresponding disk
|
822 |
@raise errors.OpPrereqError: when the given index is not valid
|
823 |
|
824 |
"""
|
825 |
try:
|
826 |
idx = int(idx)
|
827 |
return self.disks[idx] |
828 |
except (TypeError, ValueError), err: |
829 |
raise errors.OpPrereqError("Invalid disk index: '%s'" % str(err), |
830 |
errors.ECODE_INVAL) |
831 |
except IndexError: |
832 |
raise errors.OpPrereqError("Invalid disk index: %d (instace has disks" |
833 |
" 0 to %d" % (idx, len(self.disks) - 1), |
834 |
errors.ECODE_INVAL) |
835 |
|
836 |
def ToDict(self): |
837 |
"""Instance-specific conversion to standard python types.
|
838 |
|
839 |
This replaces the children lists of objects with lists of standard
|
840 |
python types.
|
841 |
|
842 |
"""
|
843 |
bo = super(Instance, self).ToDict() |
844 |
|
845 |
for attr in "nics", "disks": |
846 |
alist = bo.get(attr, None)
|
847 |
if alist:
|
848 |
nlist = self._ContainerToDicts(alist)
|
849 |
else:
|
850 |
nlist = [] |
851 |
bo[attr] = nlist |
852 |
return bo
|
853 |
|
854 |
@classmethod
|
855 |
def FromDict(cls, val): |
856 |
"""Custom function for instances.
|
857 |
|
858 |
"""
|
859 |
obj = super(Instance, cls).FromDict(val)
|
860 |
obj.nics = cls._ContainerFromDicts(obj.nics, list, NIC)
|
861 |
obj.disks = cls._ContainerFromDicts(obj.disks, list, Disk)
|
862 |
return obj
|
863 |
|
864 |
def UpgradeConfig(self): |
865 |
"""Fill defaults for missing configuration values.
|
866 |
|
867 |
"""
|
868 |
for nic in self.nics: |
869 |
nic.UpgradeConfig() |
870 |
for disk in self.disks: |
871 |
disk.UpgradeConfig() |
872 |
if self.hvparams: |
873 |
for key in constants.HVC_GLOBALS: |
874 |
try:
|
875 |
del self.hvparams[key] |
876 |
except KeyError: |
877 |
pass
|
878 |
if self.osparams is None: |
879 |
self.osparams = {}
|
880 |
|
881 |
|
882 |
class OS(ConfigObject): |
883 |
"""Config object representing an operating system.
|
884 |
|
885 |
@type supported_parameters: list
|
886 |
@ivar supported_parameters: a list of tuples, name and description,
|
887 |
containing the supported parameters by this OS
|
888 |
|
889 |
@type VARIANT_DELIM: string
|
890 |
@cvar VARIANT_DELIM: the variant delimiter
|
891 |
|
892 |
"""
|
893 |
__slots__ = [ |
894 |
"name",
|
895 |
"path",
|
896 |
"api_versions",
|
897 |
"create_script",
|
898 |
"export_script",
|
899 |
"import_script",
|
900 |
"rename_script",
|
901 |
"verify_script",
|
902 |
"supported_variants",
|
903 |
"supported_parameters",
|
904 |
] |
905 |
|
906 |
VARIANT_DELIM = "+"
|
907 |
|
908 |
@classmethod
|
909 |
def SplitNameVariant(cls, name): |
910 |
"""Splits the name into the proper name and variant.
|
911 |
|
912 |
@param name: the OS (unprocessed) name
|
913 |
@rtype: list
|
914 |
@return: a list of two elements; if the original name didn't
|
915 |
contain a variant, it's returned as an empty string
|
916 |
|
917 |
"""
|
918 |
nv = name.split(cls.VARIANT_DELIM, 1)
|
919 |
if len(nv) == 1: |
920 |
nv.append("")
|
921 |
return nv
|
922 |
|
923 |
@classmethod
|
924 |
def GetName(cls, name): |
925 |
"""Returns the proper name of the os (without the variant).
|
926 |
|
927 |
@param name: the OS (unprocessed) name
|
928 |
|
929 |
"""
|
930 |
return cls.SplitNameVariant(name)[0] |
931 |
|
932 |
@classmethod
|
933 |
def GetVariant(cls, name): |
934 |
"""Returns the variant the os (without the base name).
|
935 |
|
936 |
@param name: the OS (unprocessed) name
|
937 |
|
938 |
"""
|
939 |
return cls.SplitNameVariant(name)[1] |
940 |
|
941 |
|
942 |
class Node(TaggableObject): |
943 |
"""Config object representing a node."""
|
944 |
__slots__ = [ |
945 |
"name",
|
946 |
"primary_ip",
|
947 |
"secondary_ip",
|
948 |
"serial_no",
|
949 |
"master_candidate",
|
950 |
"offline",
|
951 |
"drained",
|
952 |
"group",
|
953 |
"master_capable",
|
954 |
"vm_capable",
|
955 |
"ndparams",
|
956 |
"powered",
|
957 |
] + _TIMESTAMPS + _UUID |
958 |
|
959 |
def UpgradeConfig(self): |
960 |
"""Fill defaults for missing configuration values.
|
961 |
|
962 |
"""
|
963 |
# pylint: disable-msg=E0203
|
964 |
# because these are "defined" via slots, not manually
|
965 |
if self.master_capable is None: |
966 |
self.master_capable = True |
967 |
|
968 |
if self.vm_capable is None: |
969 |
self.vm_capable = True |
970 |
|
971 |
if self.ndparams is None: |
972 |
self.ndparams = {}
|
973 |
|
974 |
if self.powered is None: |
975 |
self.powered = True |
976 |
|
977 |
|
978 |
class NodeGroup(ConfigObject): |
979 |
"""Config object representing a node group."""
|
980 |
__slots__ = [ |
981 |
"name",
|
982 |
"members",
|
983 |
"ndparams",
|
984 |
"serial_no",
|
985 |
"alloc_policy",
|
986 |
] + _TIMESTAMPS + _UUID |
987 |
|
988 |
def ToDict(self): |
989 |
"""Custom function for nodegroup.
|
990 |
|
991 |
This discards the members object, which gets recalculated and is only kept
|
992 |
in memory.
|
993 |
|
994 |
"""
|
995 |
mydict = super(NodeGroup, self).ToDict() |
996 |
del mydict["members"] |
997 |
return mydict
|
998 |
|
999 |
@classmethod
|
1000 |
def FromDict(cls, val): |
1001 |
"""Custom function for nodegroup.
|
1002 |
|
1003 |
The members slot is initialized to an empty list, upon deserialization.
|
1004 |
|
1005 |
"""
|
1006 |
obj = super(NodeGroup, cls).FromDict(val)
|
1007 |
obj.members = [] |
1008 |
return obj
|
1009 |
|
1010 |
def UpgradeConfig(self): |
1011 |
"""Fill defaults for missing configuration values.
|
1012 |
|
1013 |
"""
|
1014 |
if self.ndparams is None: |
1015 |
self.ndparams = {}
|
1016 |
|
1017 |
if self.serial_no is None: |
1018 |
self.serial_no = 1 |
1019 |
|
1020 |
if self.alloc_policy is None: |
1021 |
self.alloc_policy = constants.ALLOC_POLICY_PREFERRED
|
1022 |
|
1023 |
# We only update mtime, and not ctime, since we would not be able to provide
|
1024 |
# a correct value for creation time.
|
1025 |
if self.mtime is None: |
1026 |
self.mtime = time.time()
|
1027 |
|
1028 |
def FillND(self, node): |
1029 |
"""Return filled out ndparams for L{object.Node}
|
1030 |
|
1031 |
@type node: L{objects.Node}
|
1032 |
@param node: A Node object to fill
|
1033 |
@return a copy of the node's ndparams with defaults filled
|
1034 |
|
1035 |
"""
|
1036 |
return self.SimpleFillND(node.ndparams) |
1037 |
|
1038 |
def SimpleFillND(self, ndparams): |
1039 |
"""Fill a given ndparams dict with defaults.
|
1040 |
|
1041 |
@type ndparams: dict
|
1042 |
@param ndparams: the dict to fill
|
1043 |
@rtype: dict
|
1044 |
@return: a copy of the passed in ndparams with missing keys filled
|
1045 |
from the node group defaults
|
1046 |
|
1047 |
"""
|
1048 |
return FillDict(self.ndparams, ndparams) |
1049 |
|
1050 |
|
1051 |
class Cluster(TaggableObject): |
1052 |
"""Config object representing the cluster."""
|
1053 |
__slots__ = [ |
1054 |
"serial_no",
|
1055 |
"rsahostkeypub",
|
1056 |
"highest_used_port",
|
1057 |
"tcpudp_port_pool",
|
1058 |
"mac_prefix",
|
1059 |
"volume_group_name",
|
1060 |
"reserved_lvs",
|
1061 |
"drbd_usermode_helper",
|
1062 |
"default_bridge",
|
1063 |
"default_hypervisor",
|
1064 |
"master_node",
|
1065 |
"master_ip",
|
1066 |
"master_netdev",
|
1067 |
"cluster_name",
|
1068 |
"file_storage_dir",
|
1069 |
"enabled_hypervisors",
|
1070 |
"hvparams",
|
1071 |
"os_hvp",
|
1072 |
"beparams",
|
1073 |
"osparams",
|
1074 |
"nicparams",
|
1075 |
"ndparams",
|
1076 |
"candidate_pool_size",
|
1077 |
"modify_etc_hosts",
|
1078 |
"modify_ssh_setup",
|
1079 |
"maintain_node_health",
|
1080 |
"uid_pool",
|
1081 |
"default_iallocator",
|
1082 |
"hidden_os",
|
1083 |
"blacklisted_os",
|
1084 |
"primary_ip_family",
|
1085 |
"prealloc_wipe_disks",
|
1086 |
] + _TIMESTAMPS + _UUID |
1087 |
|
1088 |
def UpgradeConfig(self): |
1089 |
"""Fill defaults for missing configuration values.
|
1090 |
|
1091 |
"""
|
1092 |
# pylint: disable-msg=E0203
|
1093 |
# because these are "defined" via slots, not manually
|
1094 |
if self.hvparams is None: |
1095 |
self.hvparams = constants.HVC_DEFAULTS
|
1096 |
else:
|
1097 |
for hypervisor in self.hvparams: |
1098 |
self.hvparams[hypervisor] = FillDict(
|
1099 |
constants.HVC_DEFAULTS[hypervisor], self.hvparams[hypervisor])
|
1100 |
|
1101 |
if self.os_hvp is None: |
1102 |
self.os_hvp = {}
|
1103 |
|
1104 |
# osparams added before 2.2
|
1105 |
if self.osparams is None: |
1106 |
self.osparams = {}
|
1107 |
|
1108 |
if self.ndparams is None: |
1109 |
self.ndparams = constants.NDC_DEFAULTS
|
1110 |
|
1111 |
self.beparams = UpgradeGroupedParams(self.beparams, |
1112 |
constants.BEC_DEFAULTS) |
1113 |
migrate_default_bridge = not self.nicparams |
1114 |
self.nicparams = UpgradeGroupedParams(self.nicparams, |
1115 |
constants.NICC_DEFAULTS) |
1116 |
if migrate_default_bridge:
|
1117 |
self.nicparams[constants.PP_DEFAULT][constants.NIC_LINK] = \
|
1118 |
self.default_bridge
|
1119 |
|
1120 |
if self.modify_etc_hosts is None: |
1121 |
self.modify_etc_hosts = True |
1122 |
|
1123 |
if self.modify_ssh_setup is None: |
1124 |
self.modify_ssh_setup = True |
1125 |
|
1126 |
# default_bridge is no longer used it 2.1. The slot is left there to
|
1127 |
# support auto-upgrading. It can be removed once we decide to deprecate
|
1128 |
# upgrading straight from 2.0.
|
1129 |
if self.default_bridge is not None: |
1130 |
self.default_bridge = None |
1131 |
|
1132 |
# default_hypervisor is just the first enabled one in 2.1. This slot and
|
1133 |
# code can be removed once upgrading straight from 2.0 is deprecated.
|
1134 |
if self.default_hypervisor is not None: |
1135 |
self.enabled_hypervisors = ([self.default_hypervisor] + |
1136 |
[hvname for hvname in self.enabled_hypervisors |
1137 |
if hvname != self.default_hypervisor]) |
1138 |
self.default_hypervisor = None |
1139 |
|
1140 |
# maintain_node_health added after 2.1.1
|
1141 |
if self.maintain_node_health is None: |
1142 |
self.maintain_node_health = False |
1143 |
|
1144 |
if self.uid_pool is None: |
1145 |
self.uid_pool = []
|
1146 |
|
1147 |
if self.default_iallocator is None: |
1148 |
self.default_iallocator = "" |
1149 |
|
1150 |
# reserved_lvs added before 2.2
|
1151 |
if self.reserved_lvs is None: |
1152 |
self.reserved_lvs = []
|
1153 |
|
1154 |
# hidden and blacklisted operating systems added before 2.2.1
|
1155 |
if self.hidden_os is None: |
1156 |
self.hidden_os = []
|
1157 |
|
1158 |
if self.blacklisted_os is None: |
1159 |
self.blacklisted_os = []
|
1160 |
|
1161 |
# primary_ip_family added before 2.3
|
1162 |
if self.primary_ip_family is None: |
1163 |
self.primary_ip_family = AF_INET
|
1164 |
|
1165 |
if self.prealloc_wipe_disks is None: |
1166 |
self.prealloc_wipe_disks = False |
1167 |
|
1168 |
def ToDict(self): |
1169 |
"""Custom function for cluster.
|
1170 |
|
1171 |
"""
|
1172 |
mydict = super(Cluster, self).ToDict() |
1173 |
mydict["tcpudp_port_pool"] = list(self.tcpudp_port_pool) |
1174 |
return mydict
|
1175 |
|
1176 |
@classmethod
|
1177 |
def FromDict(cls, val): |
1178 |
"""Custom function for cluster.
|
1179 |
|
1180 |
"""
|
1181 |
obj = super(Cluster, cls).FromDict(val)
|
1182 |
if not isinstance(obj.tcpudp_port_pool, set): |
1183 |
obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
|
1184 |
return obj
|
1185 |
|
1186 |
def GetHVDefaults(self, hypervisor, os_name=None, skip_keys=None): |
1187 |
"""Get the default hypervisor parameters for the cluster.
|
1188 |
|
1189 |
@param hypervisor: the hypervisor name
|
1190 |
@param os_name: if specified, we'll also update the defaults for this OS
|
1191 |
@param skip_keys: if passed, list of keys not to use
|
1192 |
@return: the defaults dict
|
1193 |
|
1194 |
"""
|
1195 |
if skip_keys is None: |
1196 |
skip_keys = [] |
1197 |
|
1198 |
fill_stack = [self.hvparams.get(hypervisor, {})]
|
1199 |
if os_name is not None: |
1200 |
os_hvp = self.os_hvp.get(os_name, {}).get(hypervisor, {})
|
1201 |
fill_stack.append(os_hvp) |
1202 |
|
1203 |
ret_dict = {} |
1204 |
for o_dict in fill_stack: |
1205 |
ret_dict = FillDict(ret_dict, o_dict, skip_keys=skip_keys) |
1206 |
|
1207 |
return ret_dict
|
1208 |
|
1209 |
def SimpleFillHV(self, hv_name, os_name, hvparams, skip_globals=False): |
1210 |
"""Fill a given hvparams dict with cluster defaults.
|
1211 |
|
1212 |
@type hv_name: string
|
1213 |
@param hv_name: the hypervisor to use
|
1214 |
@type os_name: string
|
1215 |
@param os_name: the OS to use for overriding the hypervisor defaults
|
1216 |
@type skip_globals: boolean
|
1217 |
@param skip_globals: if True, the global hypervisor parameters will
|
1218 |
not be filled
|
1219 |
@rtype: dict
|
1220 |
@return: a copy of the given hvparams with missing keys filled from
|
1221 |
the cluster defaults
|
1222 |
|
1223 |
"""
|
1224 |
if skip_globals:
|
1225 |
skip_keys = constants.HVC_GLOBALS |
1226 |
else:
|
1227 |
skip_keys = [] |
1228 |
|
1229 |
def_dict = self.GetHVDefaults(hv_name, os_name, skip_keys=skip_keys)
|
1230 |
return FillDict(def_dict, hvparams, skip_keys=skip_keys)
|
1231 |
|
1232 |
def FillHV(self, instance, skip_globals=False): |
1233 |
"""Fill an instance's hvparams dict with cluster defaults.
|
1234 |
|
1235 |
@type instance: L{objects.Instance}
|
1236 |
@param instance: the instance parameter to fill
|
1237 |
@type skip_globals: boolean
|
1238 |
@param skip_globals: if True, the global hypervisor parameters will
|
1239 |
not be filled
|
1240 |
@rtype: dict
|
1241 |
@return: a copy of the instance's hvparams with missing keys filled from
|
1242 |
the cluster defaults
|
1243 |
|
1244 |
"""
|
1245 |
return self.SimpleFillHV(instance.hypervisor, instance.os, |
1246 |
instance.hvparams, skip_globals) |
1247 |
|
1248 |
def SimpleFillBE(self, beparams): |
1249 |
"""Fill a given beparams dict with cluster defaults.
|
1250 |
|
1251 |
@type beparams: dict
|
1252 |
@param beparams: the dict to fill
|
1253 |
@rtype: dict
|
1254 |
@return: a copy of the passed in beparams with missing keys filled
|
1255 |
from the cluster defaults
|
1256 |
|
1257 |
"""
|
1258 |
return FillDict(self.beparams.get(constants.PP_DEFAULT, {}), beparams) |
1259 |
|
1260 |
def FillBE(self, instance): |
1261 |
"""Fill an instance's beparams dict with cluster defaults.
|
1262 |
|
1263 |
@type instance: L{objects.Instance}
|
1264 |
@param instance: the instance parameter to fill
|
1265 |
@rtype: dict
|
1266 |
@return: a copy of the instance's beparams with missing keys filled from
|
1267 |
the cluster defaults
|
1268 |
|
1269 |
"""
|
1270 |
return self.SimpleFillBE(instance.beparams) |
1271 |
|
1272 |
def SimpleFillNIC(self, nicparams): |
1273 |
"""Fill a given nicparams dict with cluster defaults.
|
1274 |
|
1275 |
@type nicparams: dict
|
1276 |
@param nicparams: the dict to fill
|
1277 |
@rtype: dict
|
1278 |
@return: a copy of the passed in nicparams with missing keys filled
|
1279 |
from the cluster defaults
|
1280 |
|
1281 |
"""
|
1282 |
return FillDict(self.nicparams.get(constants.PP_DEFAULT, {}), nicparams) |
1283 |
|
1284 |
def SimpleFillOS(self, os_name, os_params): |
1285 |
"""Fill an instance's osparams dict with cluster defaults.
|
1286 |
|
1287 |
@type os_name: string
|
1288 |
@param os_name: the OS name to use
|
1289 |
@type os_params: dict
|
1290 |
@param os_params: the dict to fill with default values
|
1291 |
@rtype: dict
|
1292 |
@return: a copy of the instance's osparams with missing keys filled from
|
1293 |
the cluster defaults
|
1294 |
|
1295 |
"""
|
1296 |
name_only = os_name.split("+", 1)[0] |
1297 |
# base OS
|
1298 |
result = self.osparams.get(name_only, {})
|
1299 |
# OS with variant
|
1300 |
result = FillDict(result, self.osparams.get(os_name, {}))
|
1301 |
# specified params
|
1302 |
return FillDict(result, os_params)
|
1303 |
|
1304 |
def FillND(self, node, nodegroup): |
1305 |
"""Return filled out ndparams for L{objects.NodeGroup} and L{object.Node}
|
1306 |
|
1307 |
@type node: L{objects.Node}
|
1308 |
@param node: A Node object to fill
|
1309 |
@type nodegroup: L{objects.NodeGroup}
|
1310 |
@param nodegroup: A Node object to fill
|
1311 |
@return a copy of the node's ndparams with defaults filled
|
1312 |
|
1313 |
"""
|
1314 |
return self.SimpleFillND(nodegroup.FillND(node)) |
1315 |
|
1316 |
def SimpleFillND(self, ndparams): |
1317 |
"""Fill a given ndparams dict with defaults.
|
1318 |
|
1319 |
@type ndparams: dict
|
1320 |
@param ndparams: the dict to fill
|
1321 |
@rtype: dict
|
1322 |
@return: a copy of the passed in ndparams with missing keys filled
|
1323 |
from the cluster defaults
|
1324 |
|
1325 |
"""
|
1326 |
return FillDict(self.ndparams, ndparams) |
1327 |
|
1328 |
|
1329 |
class BlockDevStatus(ConfigObject): |
1330 |
"""Config object representing the status of a block device."""
|
1331 |
__slots__ = [ |
1332 |
"dev_path",
|
1333 |
"major",
|
1334 |
"minor",
|
1335 |
"sync_percent",
|
1336 |
"estimated_time",
|
1337 |
"is_degraded",
|
1338 |
"ldisk_status",
|
1339 |
] |
1340 |
|
1341 |
|
1342 |
class ImportExportStatus(ConfigObject): |
1343 |
"""Config object representing the status of an import or export."""
|
1344 |
__slots__ = [ |
1345 |
"recent_output",
|
1346 |
"listen_port",
|
1347 |
"connected",
|
1348 |
"progress_mbytes",
|
1349 |
"progress_throughput",
|
1350 |
"progress_eta",
|
1351 |
"progress_percent",
|
1352 |
"exit_status",
|
1353 |
"error_message",
|
1354 |
] + _TIMESTAMPS |
1355 |
|
1356 |
|
1357 |
class ImportExportOptions(ConfigObject): |
1358 |
"""Options for import/export daemon
|
1359 |
|
1360 |
@ivar key_name: X509 key name (None for cluster certificate)
|
1361 |
@ivar ca_pem: Remote peer CA in PEM format (None for cluster certificate)
|
1362 |
@ivar compress: Compression method (one of L{constants.IEC_ALL})
|
1363 |
@ivar magic: Used to ensure the connection goes to the right disk
|
1364 |
@ivar ipv6: Whether to use IPv6
|
1365 |
@ivar connect_timeout: Number of seconds for establishing connection
|
1366 |
|
1367 |
"""
|
1368 |
__slots__ = [ |
1369 |
"key_name",
|
1370 |
"ca_pem",
|
1371 |
"compress",
|
1372 |
"magic",
|
1373 |
"ipv6",
|
1374 |
"connect_timeout",
|
1375 |
] |
1376 |
|
1377 |
|
1378 |
class ConfdRequest(ConfigObject): |
1379 |
"""Object holding a confd request.
|
1380 |
|
1381 |
@ivar protocol: confd protocol version
|
1382 |
@ivar type: confd query type
|
1383 |
@ivar query: query request
|
1384 |
@ivar rsalt: requested reply salt
|
1385 |
|
1386 |
"""
|
1387 |
__slots__ = [ |
1388 |
"protocol",
|
1389 |
"type",
|
1390 |
"query",
|
1391 |
"rsalt",
|
1392 |
] |
1393 |
|
1394 |
|
1395 |
class ConfdReply(ConfigObject): |
1396 |
"""Object holding a confd reply.
|
1397 |
|
1398 |
@ivar protocol: confd protocol version
|
1399 |
@ivar status: reply status code (ok, error)
|
1400 |
@ivar answer: confd query reply
|
1401 |
@ivar serial: configuration serial number
|
1402 |
|
1403 |
"""
|
1404 |
__slots__ = [ |
1405 |
"protocol",
|
1406 |
"status",
|
1407 |
"answer",
|
1408 |
"serial",
|
1409 |
] |
1410 |
|
1411 |
|
1412 |
class QueryFieldDefinition(ConfigObject): |
1413 |
"""Object holding a query field definition.
|
1414 |
|
1415 |
@ivar name: Field name
|
1416 |
@ivar title: Human-readable title
|
1417 |
@ivar kind: Field type
|
1418 |
|
1419 |
"""
|
1420 |
__slots__ = [ |
1421 |
"name",
|
1422 |
"title",
|
1423 |
"kind",
|
1424 |
] |
1425 |
|
1426 |
|
1427 |
class _QueryResponseBase(ConfigObject): |
1428 |
__slots__ = [ |
1429 |
"fields",
|
1430 |
] |
1431 |
|
1432 |
def ToDict(self): |
1433 |
"""Custom function for serializing.
|
1434 |
|
1435 |
"""
|
1436 |
mydict = super(_QueryResponseBase, self).ToDict() |
1437 |
mydict["fields"] = self._ContainerToDicts(mydict["fields"]) |
1438 |
return mydict
|
1439 |
|
1440 |
@classmethod
|
1441 |
def FromDict(cls, val): |
1442 |
"""Custom function for de-serializing.
|
1443 |
|
1444 |
"""
|
1445 |
obj = super(_QueryResponseBase, cls).FromDict(val)
|
1446 |
obj.fields = cls._ContainerFromDicts(obj.fields, list, QueryFieldDefinition)
|
1447 |
return obj
|
1448 |
|
1449 |
|
1450 |
class QueryRequest(ConfigObject): |
1451 |
"""Object holding a query request.
|
1452 |
|
1453 |
"""
|
1454 |
__slots__ = [ |
1455 |
"what",
|
1456 |
"fields",
|
1457 |
"filter",
|
1458 |
] |
1459 |
|
1460 |
|
1461 |
class QueryResponse(_QueryResponseBase): |
1462 |
"""Object holding the response to a query.
|
1463 |
|
1464 |
@ivar fields: List of L{QueryFieldDefinition} objects
|
1465 |
@ivar data: Requested data
|
1466 |
|
1467 |
"""
|
1468 |
__slots__ = [ |
1469 |
"data",
|
1470 |
] |
1471 |
|
1472 |
|
1473 |
class QueryFieldsRequest(ConfigObject): |
1474 |
"""Object holding a request for querying available fields.
|
1475 |
|
1476 |
"""
|
1477 |
__slots__ = [ |
1478 |
"what",
|
1479 |
"fields",
|
1480 |
] |
1481 |
|
1482 |
|
1483 |
class QueryFieldsResponse(_QueryResponseBase): |
1484 |
"""Object holding the response to a query for fields.
|
1485 |
|
1486 |
@ivar fields: List of L{QueryFieldDefinition} objects
|
1487 |
|
1488 |
"""
|
1489 |
__slots__ = [ |
1490 |
] |
1491 |
|
1492 |
|
1493 |
class InstanceConsole(ConfigObject): |
1494 |
"""Object describing how to access the console of an instance.
|
1495 |
|
1496 |
"""
|
1497 |
__slots__ = [ |
1498 |
"instance",
|
1499 |
"kind",
|
1500 |
"message",
|
1501 |
"host",
|
1502 |
"port",
|
1503 |
"user",
|
1504 |
"command",
|
1505 |
"display",
|
1506 |
] |
1507 |
|
1508 |
def Validate(self): |
1509 |
"""Validates contents of this object.
|
1510 |
|
1511 |
"""
|
1512 |
assert self.kind in constants.CONS_ALL, "Unknown console type" |
1513 |
assert self.instance, "Missing instance name" |
1514 |
assert self.message or self.kind in [constants.CONS_SSH, constants.CONS_VNC] |
1515 |
assert self.host or self.kind == constants.CONS_MESSAGE |
1516 |
assert self.port or self.kind in [constants.CONS_MESSAGE, |
1517 |
constants.CONS_SSH] |
1518 |
assert self.user or self.kind in [constants.CONS_MESSAGE, |
1519 |
constants.CONS_VNC] |
1520 |
assert self.command or self.kind in [constants.CONS_MESSAGE, |
1521 |
constants.CONS_VNC] |
1522 |
assert self.display or self.kind in [constants.CONS_MESSAGE, |
1523 |
constants.CONS_SSH] |
1524 |
return True |
1525 |
|
1526 |
|
1527 |
class SerializableConfigParser(ConfigParser.SafeConfigParser): |
1528 |
"""Simple wrapper over ConfigParse that allows serialization.
|
1529 |
|
1530 |
This class is basically ConfigParser.SafeConfigParser with two
|
1531 |
additional methods that allow it to serialize/unserialize to/from a
|
1532 |
buffer.
|
1533 |
|
1534 |
"""
|
1535 |
def Dumps(self): |
1536 |
"""Dump this instance and return the string representation."""
|
1537 |
buf = StringIO() |
1538 |
self.write(buf)
|
1539 |
return buf.getvalue()
|
1540 |
|
1541 |
@classmethod
|
1542 |
def Loads(cls, data): |
1543 |
"""Load data from a string."""
|
1544 |
buf = StringIO(data) |
1545 |
cfp = cls() |
1546 |
cfp.readfp(buf) |
1547 |
return cfp
|