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#
# dispatch.py: install/upgrade master flow control
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 2001 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library 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 packages import readPackages, checkDependencies, doInstall
from packages import handleX11Packages, writeConfiguration, writeXConfiguration
from packages import writeKSConfiguration, turnOnFilesystems
from packages import queryUpgradeContinue
from floppy import makeBootdisk
from bootloader import partitioningComplete, writeBootloader
from flags import flags
DISPATCH_BACK = -1
DISPATCH_FORWARD = 1
DISPATCH_NOOP = None
# 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, tuple)
# ( name, Function, tuple)
#
# in the second case, the function is called directly from the dispatcher
installSteps = [
( "language", ("intf", "id.instLanguage") ),
( "keyboard", ("id.instLanguage", "id.keyboard") ),
( "mouse", ("id.mouse", ) ),
( "welcome", () ),
( "reconfigwelcome", () ),
( "reconfigkeyboard", ("id.instLanguage", "id.keyboard" ) ),
( "installtype", ("dispatch", "id", "method", "intf") ),
( "partition", ("id.fsset", "id.diskset", "id.partrequests", "intf")),
( "partitiondone", partitioningComplete, ("dispatch", "id.bootloader",
"id.fsset", "id.diskset" ) ),
( "bootloader", ("dispatch", "id.bootloader", "id.fsset", "id.diskset") ),
( "network", ("id.network",) ),
( "firewall", ("id.network", "id.firewall") ),
( "languagesupport", ("id.langSupport", ) ),
( "timezone", ("id.instLanguage", "id.timezone", ) ),
( "accounts", ("id.rootPassword", "id.accounts", ) ),
( "authentication", ("id.auth", ) ),
( "readcomps", readPackages, ("intf", "method", "id" )),
( "upgradecontinue", queryUpgradeContinue, ("intf", "dir", "dispatch")),
( "package-selection", ("id.comps", "dispatch") ),
( "indivpackage", ("id.comps", "id.hdList", ) ),
( "handleX11pkgs", handleX11Packages, ("dir", "intf", "dispatch",
"id", "instPath" )),
( "videocard", ("dispatch", "id.xconfig", "id.videocard")),
( "checkdeps", checkDependencies, ("dir", "intf", "dispatch",
"id", "instPath" )),
( "dependencies", ("id.comps", "id.dependencies",) ),
( "confirminstall", () ),
( "confirmupgrade", () ),
( "install", ("dir", "intf", "id", ) ),
( "enablefilesystems", turnOnFilesystems, ( "dir", "id.fsset",
"id.diskset", "id.upgrade",
"instPath") ),
( "installpackages", doInstall, ( "method", "id", "intf", "instPath" )),
( "writeconfig", writeConfiguration, ("id", "instPath" )),
( "instbootloader", writeBootloader, ("intf", "instPath", "id.fsset",
"id.bootloader", "id.langSupport",
"id.comps") ),
( "monitor", ("id.xconfig", "id.monitor") ),
( "xcustom", ("id.xconfig", "id.monitor", "id.videocard",
"id.desktop", "id.comps") ),
( "writexconfig", writeXConfiguration, ("id", "instPath")),
( "writeksconfig", writeKSConfiguration, ("id", "instPath")),
( "bootdisk", ("dir", "dispatch") ),
( "makebootdisk", makeBootdisk, ("intf", "id.floppyDevice",
"id.hdList", "instPath") ),
( "complete", () ),
( "reconfigcomplete", () )
]
class Dispatcher:
def gotoPrev(self):
self.dir = -1
self.moveStep()
def gotoNext(self):
self.dir = 1
self.moveStep()
def setStepList(self, *steps):
self.skipSteps = {}
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):
raise KeyError, ("step %s does not exist" % name)
def stepInSkipList(self, step):
return self.skipSteps.has_key(step)
def skipStep(self, stepToSkip, skip = 1):
for step in installSteps:
name = step[0]
if name == stepToSkip:
if skip:
self.skipSteps[name] = 1
elif self.skipSteps.has_key(name):
del self.skipSteps[name]
return
raise KeyError, ("unknown step %s" % stepToSkip)
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.skipSteps.has_key(installSteps[self.step][0])
or (type(installSteps[self.step][1]) == FunctionType))):
info = installSteps[self.step]
if ((type(info[1]) == FunctionType)
and (not self.skipSteps.has_key(info[0]))):
(func, args) = info[1:]
rc = apply(func, self.bindArgs(args))
if rc == DISPATCH_BACK:
self.dir = -1
elif rc == DISPATCH_FORWARD:
self.dir = 1
# 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
def bindArgs(self, args):
newArgs = ()
for arg in args:
obj = self
for item in string.split(arg, '.'):
if not obj.__dict__.has_key(item):
print "cannot find %s in %s" % (item, obj)
obj = obj.__dict__[item]
newArgs = newArgs + (obj,)
return newArgs
def currentStep(self):
if self.step == None:
self.gotoNext()
elif self.step == len(installSteps):
return (None, None)
stepInfo = installSteps[self.step]
step = stepInfo[0]
args = self.bindArgs(stepInfo[1])
return (step, args)
def __init__(self, intf, id, method, instPath):
self.dir = DISPATCH_FORWARD
self.step = None
self.skipSteps = {}
dispatch = self
self.id = id
self.flags = flags
self.intf = intf
self.method = method
self.dispatch = self
self.instPath = instPath
self.firstStep = 0
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