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#
# dispatch.py: install/upgrade master flow control
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 2001-2006 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import string
from types import *
from constants import *
from packages import writeXConfiguration
from packages import writeKSConfiguration, turnOnFilesystems
from packages import doMigrateFilesystems
from packages import doPostAction
from packages import copyAnacondaLogs
from autopart import doAutoPartition
from packages import firstbootConfiguration
from packages import betaNagScreen
from packages import setupTimezone
from packages import setFileCons
from partitioning import partitionObjectsInitialize
from partitioning import partitioningComplete
from bootloader import writeBootloader, bootloaderSetupChoices
from flags import flags
from upgrade import upgradeMountFilesystems
from upgrade import upgradeSwapSuggestion, upgradeMigrateFind
from upgrade import findRootParts, queryUpgradeContinue
from network import networkDeviceCheck
from installmethod import doMethodComplete
from backend import doPostSelection, doRepoSetup, doBasePackageSelect
from backend import doPreInstall, doPostInstall, doInstall
from backend import writeConfiguration
import logging
log = logging.getLogger("anaconda")
# These are all of the install steps, in order. Note that upgrade and
# install steps are the same thing! Upgrades skip install steps, while
# installs skip upgrade steps.
#
# items are one of
#
# ( name )
# ( name, Function )
#
# in the second case, the function is called directly from the dispatcher
# All install steps take the anaconda object as their sole argument. This
# gets passed in when we call the function.
installSteps = [
("welcome", ),
("betanag", betaNagScreen, ),
("language", ),
("keyboard", ),
("findrootparts", findRootParts, ),
("findinstall", ),
("iscsi", ),
("zfcpconfig", ),
("partitionobjinit", partitionObjectsInitialize, ),
("parttype", ),
("autopartitionexecute", doAutoPartition, ),
("partition", ),
("upgrademount", upgradeMountFilesystems, ),
("upgradecontinue", queryUpgradeContinue, ),
("upgradeswapsuggestion", upgradeSwapSuggestion, ),
("addswap", ),
("partitiondone", partitioningComplete, ),
("upgrademigfind", upgradeMigrateFind, ),
("upgrademigratefs", ),
("upgbootloader", ),
("bootloadersetup", bootloaderSetupChoices, ),
("bootloader", ),
("bootloaderadvanced", ),
("networkdevicecheck", networkDeviceCheck, ),
("network", ),
("timezone", ),
("accounts", ),
("reposetup", doRepoSetup, ),
("basepkgsel", doBasePackageSelect, ),
("tasksel", ),
("group-selection", ),
("postselection", doPostSelection, ),
("confirminstall", ),
("confirmupgrade", ),
("install", ),
("enablefilesystems", turnOnFilesystems, ),
("migratefilesystems", doMigrateFilesystems, ),
("setuptime", setupTimezone, ),
("preinstallconfig", doPreInstall, ),
("installpackages", doInstall, ),
("postinstallconfig", doPostInstall, ),
("writeconfig", writeConfiguration, ),
("firstboot", firstbootConfiguration, ),
("instbootloader", writeBootloader, ),
("writexconfig", writeXConfiguration, ),
("writeksconfig", writeKSConfiguration, ),
("setfilecon", setFileCons, ),
("copylogs", copyAnacondaLogs, ),
("dopostaction", doPostAction, ),
("methodcomplete", doMethodComplete, ),
("complete", ),
]
class Dispatcher:
def gotoPrev(self):
self._setDir(DISPATCH_BACK)
self.moveStep()
def gotoNext(self):
self._setDir(DISPATCH_FORWARD)
self.moveStep()
def canGoBack(self):
# begin with the step before this one. If all steps are skipped,
# we can not go backwards from this screen
i = self.step - 1
while i >= self.firstStep:
if not self.skipSteps.has_key(installSteps[i][0]):
return 1
i = i - 1
return 0
def setStepList(self, *steps):
# only remove non-permanently skipped steps from our skip list
for step, state in self.skipSteps.items():
if state == 1:
del self.skipSteps[step]
stepExists = {}
for step in installSteps:
name = step[0]
if not name in steps:
self.skipSteps[name] = 1
stepExists[name] = 1
for name in steps:
if not stepExists.has_key(name):
#XXX: hack for yum support
#raise KeyError, ("step %s does not exist" % name)
log.warning("step %s does not exist", name)
def stepInSkipList(self, step):
if type(step) == type(1):
step = installSteps[step][0]
return self.skipSteps.has_key(step)
def skipStep(self, stepToSkip, skip = 1, permanent = 0):
for step in installSteps:
name = step[0]
if name == stepToSkip:
if skip:
if permanent:
self.skipSteps[name] = 2
elif not self.skipSteps.has_key(name):
self.skipSteps[name] = 1
elif self.skipSteps.has_key(name):
# if marked as permanent then dont change
if self.skipSteps[name] != 2:
del self.skipSteps[name]
return
#raise KeyError, ("unknown step %s" % stepToSkip)
log.warning("step %s does not exist", name)
def stepIsDirect(self, step):
"""Takes a step number"""
if len(installSteps[step]) == 2:
return True
else:
return False
def moveStep(self):
if self.step == None:
self.step = self.firstStep
else:
self.step = self.step + self.dir
if self.step >= len(installSteps):
return None
while self.step >= self.firstStep and self.step < len(installSteps) \
and (self.stepInSkipList(self.step) or self.stepIsDirect(self.step)):
if self.stepIsDirect(self.step) and not self.stepInSkipList(self.step):
(stepName, stepFunc) = installSteps[self.step]
log.info("moving (%d) to step %s" %(self.dir, stepName))
rc = stepFunc(self.anaconda)
if rc in [DISPATCH_BACK, DISPATCH_FORWARD]:
self.dir = rc
# if anything else, leave self.dir alone
self.step = self.step + self.dir
if self.step == len(installSteps):
return None
if (self.step < 0):
# pick the first step not in the skip list
self.step = 0
while self.skipSteps.has_key(installSteps[self.step][0]):
self.step = self.step + 1
elif self.step >= len(installSteps):
self.step = len(installSteps) - 1
while self.skipSteps.has_key(installSteps[self.step][0]):
self.step = self.step - 1
log.info("moving (%d) to step %s" %(self.dir, installSteps[self.step][0]))
def currentStep(self):
if self.step == None:
self.gotoNext()
elif self.step >= len(installSteps):
return (None, None)
stepInfo = installSteps[self.step]
step = stepInfo[0]
return (step, self.anaconda)
def __init__(self, anaconda):
self.anaconda = anaconda
self.anaconda.dir = DISPATCH_FORWARD
self.step = None
self.skipSteps = {}
self.method = anaconda.method
self.firstStep = 0
def _getDir(self):
return self.anaconda.dir
def _setDir(self, dir):
self.anaconda.dir = dir
dir = property(_getDir,_setDir)
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