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virt-manager/virtinst/osdict.py
Cole Robinson ac6c1df1ac osdict: Remove redundant os name lookup
2015-11-03 16:00:52 -05:00

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#
# List of OS Specific data
#
# Copyright 2006-2008, 2013-2014 Red Hat, Inc.
# Jeremy Katz <katzj@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
import datetime
import logging
import re
import gi
gi.require_version('Libosinfo', '1.0')
from gi.repository import Libosinfo as libosinfo
###################
# Sorting helpers #
###################
def _remove_older_point_releases(distro_list):
ret = distro_list[:]
def _get_minor_version(osobj):
return int(osobj.name.rsplit(".", 1)[-1])
def _find_latest(prefix):
"""
Given a prefix like 'rhel4', find the latest 'rhel4.X',
and remove the rest from the os list
"""
latest_os = None
first_id = None
for osobj in ret[:]:
if not re.match("%s\.\d+" % prefix, osobj.name):
continue
if first_id is None:
first_id = ret.index(osobj)
ret.remove(osobj)
if (latest_os and
_get_minor_version(latest_os) > _get_minor_version(osobj)):
continue
latest_os = osobj
if latest_os:
ret.insert(first_id, latest_os)
_find_latest("rhel4")
_find_latest("rhel5")
_find_latest("rhel6")
_find_latest("rhel7")
_find_latest("freebsd9")
_find_latest("freebsd10")
return ret
def _sort(tosort, sortpref=None, limit_point_releases=False):
sortby_mappings = {}
distro_mappings = {}
retlist = []
sortpref = sortpref or []
for key, osinfo in tosort.items():
# Libosinfo has some duplicate version numbers here, so append .1
# if there's a collision
sortby = osinfo.sortby
while sortby_mappings.get(sortby):
sortby = sortby + ".1"
sortby_mappings[sortby] = key
# Group distros by their urldistro value first, so debian is clumped
# together, and fedora, etc.
distro = osinfo.urldistro or "zzzzzzz"
if distro not in distro_mappings:
distro_mappings[distro] = []
distro_mappings[distro].append(sortby)
# We want returned lists to be sorted descending by 'distro', so we get
# debian5, debian4, fedora14, fedora13
# rather than
# debian4, debian5, fedora13, fedora14
for distro_list in distro_mappings.values():
distro_list.sort()
distro_list.reverse()
# Move the sortpref values to the front of the list
sorted_distro_list = distro_mappings.keys()
sorted_distro_list.sort()
sortpref.reverse()
for prefer in sortpref:
if prefer not in sorted_distro_list:
continue
sorted_distro_list.remove(prefer)
sorted_distro_list.insert(0, prefer)
# Build the final list of sorted os objects
for distro in sorted_distro_list:
distro_list = distro_mappings[distro]
for key in distro_list:
orig_key = sortby_mappings[key]
retlist.append(tosort[orig_key])
# Filter out older point releases
if limit_point_releases:
retlist = _remove_older_point_releases(retlist)
return retlist
class _OSDB(object):
"""
Entry point for the public API
"""
def __init__(self):
self.__os_loader = None
self.__all_variants = None
# This is only for back compatibility with pre-libosinfo support.
# This should never change.
_aliases = {
"altlinux" : "altlinux1.0",
"debianetch" : "debian4",
"debianlenny" : "debian5",
"debiansqueeze" : "debian6",
"debianwheezy" : "debian7",
"freebsd10" : "freebsd10.0",
"freebsd6" : "freebsd6.0",
"freebsd7" : "freebsd7.0",
"freebsd8" : "freebsd8.0",
"freebsd9" : "freebsd9.0",
"mandriva2009" : "mandriva2009.0",
"mandriva2010" : "mandriva2010.0",
"mbs1" : "mbs1.0",
"msdos" : "msdos6.22",
"openbsd4" : "openbsd4.2",
"opensolaris" : "opensolaris2009.06",
"opensuse11" : "opensuse11.4",
"opensuse12" : "opensuse12.3",
"rhel4" : "rhel4.0",
"rhel5" : "rhel5.0",
"rhel6" : "rhel6.0",
"rhel7" : "rhel7.0",
"ubuntuhardy" : "ubuntu8.04",
"ubuntuintrepid" : "ubuntu8.10",
"ubuntujaunty" : "ubuntu9.04",
"ubuntukarmic" : "ubuntu9.10",
"ubuntulucid" : "ubuntu10.04",
"ubuntumaverick" : "ubuntu10.10",
"ubuntunatty" : "ubuntu11.04",
"ubuntuoneiric" : "ubuntu11.10",
"ubuntuprecise" : "ubuntu12.04",
"ubuntuquantal" : "ubuntu12.10",
"ubunturaring" : "ubuntu13.04",
"ubuntusaucy" : "ubuntu13.10",
"virtio26": "fedora10",
"vista" : "winvista",
"winxp64" : "winxp",
# Old --os-type values
"linux" : "generic",
"windows" : "winxp",
"solaris" : "solaris10",
"unix": "freebsd9.0",
"other": "generic",
}
#################
# Internal APIs #
#################
def _make_default_variants(self):
ret = {}
# Generic variant
v = _OsVariant(None)
ret[v.name] = v
return ret
@property
def _os_loader(self):
if not self.__os_loader:
loader = libosinfo.Loader()
loader.process_default_path()
self.__os_loader = loader
return self.__os_loader
@property
def _all_variants(self):
if not self.__all_variants:
loader = self._os_loader
allvariants = self._make_default_variants()
db = loader.get_db()
oslist = db.get_os_list()
for os in range(oslist.get_length()):
osi = _OsVariant(oslist.get_nth(os))
allvariants[osi.name] = osi
self.__all_variants = allvariants
return self.__all_variants
###############
# Public APIs #
###############
def lookup_os(self, key):
key = self._aliases.get(key) or key
return self._all_variants.get(key)
def lookup_os_by_media(self, location):
media = libosinfo.Media.create_from_location(location, None)
ret = self._os_loader.get_db().guess_os_from_media(media)
if not (ret and len(ret) > 0 and ret[0]):
return None
osname = ret[0].get_short_id()
if osname == "fedora-unknown":
osname = self.latest_fedora_version()
logging.debug("Detected location=%s as os=fedora-unknown. "
"Converting that to the latest fedora OS version=%s",
location, osname)
return osname
def list_types(self):
approved_types = ["linux", "windows", "unix",
"solaris", "other", "generic"]
return approved_types
def list_os(self, typename=None, only_supported=False, sortpref=None):
"""
List all OSes in the DB
:param typename: Only list OSes of this type
:param only_supported: Only list OSses where self.supported == True
:param sortpref: Sort these OSes at the front of the list
"""
sortmap = {}
for name, osobj in self._all_variants.items():
if typename and typename != osobj.get_typename():
continue
if only_supported and not osobj.get_supported():
continue
sortmap[name] = osobj
return _sort(sortmap, sortpref=sortpref,
limit_point_releases=only_supported)
def latest_fedora_version(self):
for osinfo in self.list_os():
if (osinfo.name.startswith("fedora") and
"unknown" not in osinfo.name):
# First fedora* occurrence should be the newest
return osinfo.name
#####################
# OsVariant classes #
#####################
class _OsVariant(object):
def __init__(self, o):
self._os = o
self._family = self._os and self._os.get_family() or None
self.name = self._os and self._os.get_short_id() or "generic"
self.label = self._os and self._os.get_name() or "Generic"
self.sortby = self._get_sortby()
self.urldistro = self._get_urldistro()
self._supported = None
########################
# Internal helper APIs #
########################
def _is_related_to(self, related_os_list, os=None,
check_derives=True, check_upgrades=True, check_clones=True):
os = os or self._os
if not os:
return False
if os.get_short_id() in related_os_list:
return True
check_list = []
def _extend(newl):
for obj in newl:
if obj not in check_list:
check_list.append(obj)
if check_derives:
_extend(os.get_related(
libosinfo.ProductRelationship.DERIVES_FROM).get_elements())
if check_clones:
_extend(os.get_related(
libosinfo.ProductRelationship.CLONES).get_elements())
if check_upgrades:
_extend(os.get_related(
libosinfo.ProductRelationship.UPGRADES).get_elements())
for checkobj in check_list:
if (checkobj.get_short_id() in related_os_list or
self._is_related_to(related_os_list, os=checkobj,
check_upgrades=check_upgrades,
check_derives=check_derives,
check_clones=check_clones)):
return True
return False
###############
# Cached APIs #
###############
def _get_sortby(self):
if not self._os:
return "1"
version = self._os.get_version()
try:
t = version.split(".")
t = t[:min(4, len(t))] + [0] * (4 - min(4, len(t)))
new_version = ""
for n in t:
new_version = new_version + ("%.4i" % int(n))
version = new_version
except:
pass
distro = self._os.get_distro()
return "%s-%s" % (distro, version)
def _get_supported(self):
if not self._os:
return True
eol_date = self._os.get_eol_date_string()
if eol_date:
return (datetime.datetime.strptime(eol_date, "%Y-%m-%d") >
datetime.datetime.now())
if self.name == "fedora-unknown":
return False
# As of libosinfo 2.11, many clearly EOL distros don't have an
# EOL date. So assume None == EOL, add some manual work arounds.
# We should fix this in a new libosinfo version, and then drop
# this hack
if self._is_related_to(["fedora20", "rhel7.0", "debian6",
"ubuntu13.04", "win8", "win2k12"],
check_clones=False, check_derives=False):
return True
return False
def _get_urldistro(self):
if not self._os:
return None
urldistro = self._os.get_distro()
remap = {
"opensuse" : "suse",
"sles" : "suse",
"mes" : "mandriva"
}
if remap.get(urldistro):
return remap[urldistro]
return urldistro
###############
# Public APIs #
###############
def get_supported(self):
if self._supported is None:
self._supported = self._get_supported()
return self._supported
def get_typename(self):
"""
Streamline the family name for use in the virt-manager UI
"""
if not self._os:
return "generic"
if self._family in ['linux']:
return "linux"
if self._family in ['win9x', 'winnt', 'win16']:
return "windows"
if self._family in ['solaris']:
return "solaris"
if self._family in ['openbsd', 'freebsd', 'netbsd']:
return "unix"
return "other"
def is_windows(self):
return self.get_typename() == "windows"
def need_old_xen_disable_acpi(self):
return self._is_related_to(["winxp", "win2k"], check_upgrades=False)
def broken_x2apic(self):
# x2apic breaks networking in solaris10
# https://bugs.launchpad.net/bugs/1395217
return self.name == 'solaris10'
def get_clock(self):
if self.is_windows() or self._family in ['solaris']:
return "localtime"
return "utc"
def supports_virtiommio(self):
return self._is_related_to(["fedora19"])
def default_netmodel(self):
"""
Default non-virtio net-model, since we check for that separately
"""
if not self._os:
return None
fltr = libosinfo.Filter()
fltr.add_constraint("class", "net")
devs = self._os.get_all_devices(fltr)
for idx in range(devs.get_length()):
devname = devs.get_nth(idx).get_name()
if devname != "virtio-net":
return devname
return None
def default_inputtype(self):
if self._os:
fltr = libosinfo.Filter()
fltr.add_constraint("class", "input")
devs = self._os.get_all_devices(fltr)
if devs.get_length():
return devs.get_nth(0).get_name()
return "mouse"
def default_inputbus(self):
if self._os:
fltr = libosinfo.Filter()
fltr.add_constraint("class", "input")
devs = self._os.get_all_devices(fltr)
if devs.get_length():
return devs.get_nth(0).get_bus_type()
return "ps2"
def supports_virtiodisk(self):
if self._os:
fltr = libosinfo.Filter()
fltr.add_constraint("class", "block")
devs = self._os.get_all_devices(fltr)
for dev in range(devs.get_length()):
d = devs.get_nth(dev)
if d.get_name() == "virtio-block":
return True
return False
def supports_virtionet(self):
if self._os:
fltr = libosinfo.Filter()
fltr.add_constraint("class", "net")
devs = self._os.get_all_devices(fltr)
for dev in range(devs.get_length()):
d = devs.get_nth(dev)
if d.get_name() == "virtio-net":
return True
return False
def supports_qemu_ga(self):
return self._is_related_to(["fedora18", "rhel6.0", "sles11sp4"])
def default_videomodel(self, guest):
if guest.os.is_pseries():
return "vga"
# Marc Deslauriers of canonical had previously patched us
# to use vmvga for ubuntu, see fb76c4e5. And Fedora users report
# issues with ubuntu + qxl for as late as 14.04, so carry the vmvga
# default forward until someone says otherwise. In 2014-09 I contacted
# Marc offlist and he said this was fine for now.
#
# But in my testing ubuntu-15.04 works _better_ with qxl (installer
# resolution is huge with vmvga but reasonable with qxl), and given
# that the qemu vmvga code is not supposed to be of high quality,
# let's use qxl for newer ubuntu
if (self._os and
self._os.get_distro() == "ubuntu" and
not self._is_related_to("ubuntu15.04")):
return "vmvga"
if guest.has_spice() and guest.os.is_x86():
return "qxl"
if self.is_windows():
return "vga"
return None
def get_recommended_resources(self, guest):
ret = {}
if not self._os:
return ret
def read_resource(resources, minimum, arch):
# If we are reading the "minimum" block, allocate more
# resources.
ram_scale = minimum and 2 or 1
n_cpus_scale = minimum and 2 or 1
storage_scale = minimum and 2 or 1
for i in range(resources.get_length()):
r = resources.get_nth(i)
if r.get_architecture() == arch:
ret["ram"] = r.get_ram() * ram_scale
ret["cpu"] = r.get_cpu()
ret["n-cpus"] = r.get_n_cpus() * n_cpus_scale
ret["storage"] = r.get_storage() * storage_scale
break
# libosinfo may miss the recommended resources block for some OS,
# in this case read first the minimum resources (if present)
# and use them.
read_resource(self._os.get_minimum_resources(), True, "all")
read_resource(self._os.get_minimum_resources(), True, guest.os.arch)
read_resource(self._os.get_recommended_resources(), False, "all")
read_resource(self._os.get_recommended_resources(),
False, guest.os.arch)
# QEMU TCG doesn't gain anything by having extra VCPUs
if guest.type == "qemu":
ret["n-cpus"] = 1
return ret
OSDB = _OSDB()
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