-#!/usr/bin/python
+#
#
# Copyright (C) 2006, 2007 Google Inc.
"""
-import cPickle
-from cStringIO import StringIO
+import simplejson
import ConfigParser
import re
+from cStringIO import StringIO
from ganeti import errors
from ganeti import constants
"OS", "Node", "Cluster"]
+# Check whether the simplejson module supports indentation
+_JSON_INDENT = 2
+try:
+ simplejson.dumps(1, indent=_JSON_INDENT)
+except TypeError:
+ _JSON_INDENT = None
+
+
class ConfigObject(object):
"""A generic config object.
__slots__ = []
def __init__(self, **kwargs):
- for i in kwargs:
- setattr(self, i, kwargs[i])
+ for k, v in kwargs.iteritems():
+ setattr(self, k, v)
def __getattr__(self, name):
if name not in self.__slots__:
if name in self.__slots__:
setattr(self, name, state[name])
- @staticmethod
- def FindGlobal(module, name):
- """Function filtering the allowed classes to be un-pickled.
-
- Currently, we only allow the classes from this module which are
- derived from ConfigObject.
-
- """
- # Also support the old module name (ganeti.config)
- cls = None
- if module == "ganeti.config" or module == "ganeti.objects":
- if name == "ConfigData":
- cls = ConfigData
- elif name == "NIC":
- cls = NIC
- elif name == "Disk" or name == "BlockDev":
- cls = Disk
- elif name == "Instance":
- cls = Instance
- elif name == "OS":
- cls = OS
- elif name == "Node":
- cls = Node
- elif name == "Cluster":
- cls = Cluster
- elif module == "__builtin__":
- if name == "set":
- cls = set
- if cls is None:
- raise cPickle.UnpicklingError("Class %s.%s not allowed due to"
- " security concerns" % (module, name))
- return cls
-
def Dump(self, fobj):
- """Dump this instance to a file object.
-
- Note that we use the HIGHEST_PROTOCOL, as it brings benefits for
- the new classes.
+ """Dump to a file object.
"""
- dumper = cPickle.Pickler(fobj, cPickle.HIGHEST_PROTOCOL)
- dumper.dump(self)
-
- @staticmethod
- def Load(fobj):
- """Unpickle data from the given stream.
+ data = self.ToDict()
+ if _JSON_INDENT is None:
+ simplejson.dump(data, fobj)
+ else:
+ simplejson.dump(data, fobj, indent=_JSON_INDENT)
- This uses the `FindGlobal` function to filter the allowed classes.
+ @classmethod
+ def Load(cls, fobj):
+ """Load data from the given stream.
"""
- loader = cPickle.Unpickler(fobj)
- loader.find_global = ConfigObject.FindGlobal
- return loader.load()
+ return cls.FromDict(simplejson.load(fobj))
def Dumps(self):
- """Dump this instance and return the string representation."""
+ """Dump and return the string representation."""
buf = StringIO()
self.Dump(buf)
return buf.getvalue()
- @staticmethod
- def Loads(data):
+ @classmethod
+ def Loads(cls, data):
"""Load data from a string."""
- return ConfigObject.Load(StringIO(data))
+ return cls.Load(StringIO(data))
def ToDict(self):
"""Convert to a dict holding only standard python types.
if not isinstance(val, dict):
raise errors.ConfigurationError("Invalid object passed to FromDict:"
" expected dict, got %s" % type(val))
- obj = cls(**val)
+ val_str = dict([(str(k), v) for k, v in val.iteritems()])
+ obj = cls(**val_str)
return obj
@staticmethod
if not isinstance(tag, basestring):
raise errors.TagError("Invalid tag type (not a string)")
if len(tag) > constants.MAX_TAG_LEN:
- raise errors.TagError("Tag too long (>%d)" % constants.MAX_TAG_LEN)
+ raise errors.TagError("Tag too long (>%d characters)" %
+ constants.MAX_TAG_LEN)
if not tag:
raise errors.TagError("Tags cannot be empty")
if not re.match("^[ \w.+*/:-]+$", tag):
def CreateOnSecondary(self):
"""Test if this device needs to be created on a secondary node."""
- return self.dev_type in ("drbd", "lvm")
+ return self.dev_type in (constants.LD_DRBD7, constants.LD_DRBD8,
+ constants.LD_LV)
def AssembleOnSecondary(self):
"""Test if this device needs to be assembled on a secondary node."""
- return self.dev_type in ("drbd", "lvm")
+ return self.dev_type in (constants.LD_DRBD7, constants.LD_DRBD8,
+ constants.LD_LV)
def OpenOnSecondary(self):
"""Test if this device needs to be opened on a secondary node."""
- return self.dev_type in ("lvm",)
+ return self.dev_type in (constants.LD_LV,)
+
+ def StaticDevPath(self):
+ """Return the device path if this device type has a static one.
+
+ Some devices (LVM for example) live always at the same /dev/ path,
+ irrespective of their status. For such devices, we return this
+ path, for others we return None.
+
+ """
+ if self.dev_type == constants.LD_LV:
+ return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1])
+ return None
+
+ def ChildrenNeeded(self):
+ """Compute the needed number of children for activation.
+
+ This method will return either -1 (all children) or a positive
+ number denoting the minimum number of children needed for
+ activation (only mirrored devices will usually return >=0).
+
+ Currently, only DRBD8 supports diskless activation (therefore we
+ return 0), for all other we keep the previous semantics and return
+ -1.
+
+ """
+ if self.dev_type == constants.LD_DRBD8:
+ return 0
+ return -1
def GetNodes(self, node):
"""This function returns the nodes this device lives on.
devices needs to (or can) be assembled.
"""
- if self.dev_type == "lvm" or self.dev_type == "md_raid1":
+ if self.dev_type == constants.LD_LV or self.dev_type == constants.LD_MD_R1:
result = [node]
- elif self.dev_type == "drbd":
+ elif self.dev_type in constants.LDS_DRBD:
result = [self.logical_id[0], self.logical_id[1]]
if node not in result:
raise errors.ConfigurationError("DRBD device passed unknown node")
obj.physical_id = tuple(obj.physical_id)
return obj
+ def __str__(self):
+ """Custom str() formatter for disks.
+
+ """
+ if self.dev_type == constants.LD_LV:
+ val = "<LogicalVolume(/dev/%s/%s" % self.logical_id
+ elif self.dev_type in constants.LDS_DRBD:
+ if self.dev_type == constants.LD_DRBD7:
+ val = "<DRBD7("
+ else:
+ val = "<DRBD8("
+ if self.physical_id is None:
+ phy = "unconfigured"
+ else:
+ phy = ("configured as %s:%s %s:%s" %
+ (self.physical_id[0], self.physical_id[1],
+ self.physical_id[2], self.physical_id[3]))
+
+ val += ("hosts=%s-%s, port=%s, %s, " %
+ (self.logical_id[0], self.logical_id[1], self.logical_id[2],
+ phy))
+ if self.children and self.children.count(None) == 0:
+ val += "backend=%s, metadev=%s" % (self.children[0], self.children[1])
+ else:
+ val += "no local storage"
+ elif self.dev_type == constants.LD_MD_R1:
+ val = "<MD_R1(uuid=%s, children=%s" % (self.physical_id, self.children)
+ else:
+ val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
+ (self.dev_type, self.logical_id, self.physical_id, self.children))
+ if self.iv_name is None:
+ val += ", not visible"
+ else:
+ val += ", visible as /dev/%s" % self.iv_name
+ val += ", size=%dm)>" % self.size
+ return val
+
class Instance(TaggableObject):
"""Config object representing an instance."""
"""
def _Helper(primary, sec_nodes, device):
"""Recursively computes secondary nodes given a top device."""
- if device.dev_type == 'drbd':
+ if device.dev_type in constants.LDS_DRBD:
nodea, nodeb, dummy = device.logical_id
if nodea == primary:
candidate = nodeb
devs = self.disks
for dev in devs:
- if dev.dev_type == "lvm":
+ if dev.dev_type == constants.LD_LV:
lvmap[node].append(dev.logical_id[1])
- elif dev.dev_type == "drbd":
+ elif dev.dev_type in constants.LDS_DRBD:
if dev.logical_id[0] not in lvmap:
lvmap[dev.logical_id[0]] = []
__slots__ = [
"name",
"path",
+ "status",
"api_version",
"create_script",
"export_script",
"rename_script",
]
+ @classmethod
+ def FromInvalidOS(cls, err):
+ """Create an OS from an InvalidOS error.
+
+ This routine knows how to convert an InvalidOS error to an OS
+ object representing the broken OS with a meaningful error message.
+
+ """
+ if not isinstance(err, errors.InvalidOS):
+ raise errors.ProgrammerError("Trying to initialize an OS from an"
+ " invalid object of type %s" % type(err))
+
+ return cls(name=err.args[0], path=err.args[1], status=err.args[2])
+
+ def __nonzero__(self):
+ return self.status == constants.OS_VALID_STATUS
+
+ __bool__ = __nonzero__
class Node(TaggableObject):
"""Config object representing a node."""
"default_bridge",
]
+ def ToDict(self):
+ """Custom function for cluster.
+
+ """
+ mydict = super(Cluster, self).ToDict()
+ mydict["tcpudp_port_pool"] = list(self.tcpudp_port_pool)
+ return mydict
+
+ @classmethod
+ def FromDict(cls, val):
+ """Custom function for cluster.
+
+ """
+ obj = super(Cluster, cls).FromDict(val)
+ if not isinstance(obj.tcpudp_port_pool, set):
+ obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
+ return obj
+
class SerializableConfigParser(ConfigParser.SafeConfigParser):
"""Simple wrapper over ConfigParse that allows serialization.
projects / ganeti-local / blobdiff