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# Deb-o-Matic
#
# Copyright (C) 2008-2009 David Futcher
# Copyright (C) 2012-2018 Luca Falavigna
#
# Author: David Futcher <bobbo@ubuntu.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; version 3 of the License.
#
# 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 St, Fifth Floor, Boston, MA 02110-1301, USA.
import os
from glob import glob
from logging import debug
from re import findall
from sys import path
from toposort import toposort_flatten as toposort
from Debomatic import dom
from .process import ModulePool
class ModuleArgs():
def __init__(self):
self.opts = dom.opts
self.action = None
self.architecture = None
self.directory = None
self.distribution = None
self.dists = None
self.dsc = None
self.files = None
self.package = None
self.success = False
self.uploader = None
self.hostarchitecture = None
class Module():
def __init__(self):
self.args = ModuleArgs()
self._use_modules = False
if dom.opts.has_option('modules', 'modules'):
if dom.opts.getboolean('modules', 'modules'):
self._use_modules = True
if dom.opts.has_option('modules', 'path'):
mod_path = dom.opts.get('modules', 'path')
for p in mod_path.split(':'):
path.append(p)
else:
self._use_modules = False
modules = set()
try:
for p in mod_path.split(':'):
modules |= set([os.path.splitext(os.path.basename(m))[0] for m in
glob(os.path.join(p, '*.py'))])
except OSError:
self._use_modules = False
if not modules:
self._use_modules = False
if self._use_modules:
self._instances = {}
for module in modules:
try:
_class = 'DebomaticModule_%s' % module
_mod = __import__(module)
self._instances[module] = getattr(_mod, _class)()
self._instances[module]._modulename = module
self._instances[module]._disabled = False
self._instances[module]._depends = set()
self._instances[module]._after = set()
debug(_('Module %s loaded') % module)
except (NameError, SyntaxError):
pass
self._set_relationships()
self._set_blacklisted()
self._disable_modules()
debug(_('Modules will be executed in this order: %s') %
', '.join([m for m in self._sort_modules()
if not self._instances[m]._disabled]))
def _disable_modules(self):
for module in self._sort_modules():
missing = set()
missing_after = set()
for dep in self._instances[module]._depends:
if dep in self._instances:
if self._instances[dep]._disabled:
missing.add(dep)
else:
missing.add(dep)
for dep in self._instances[module]._after:
if dep in self._instances:
if self._instances[dep]._disabled:
missing_after.add(dep)
else:
missing_after.add(dep)
if missing:
self._instances[module]._disabled = True
debug(_('%(mod)s module disabled, needs %(missing)s') %
{'mod': module, 'missing': ', '.join(missing)})
if missing_after:
for dep in missing_after:
self._instances[module]._after.remove(dep)
def _launcher(self, hook):
func, args, module, hookname, dependencies = hook
debug(_('Executing hook %(hook)s from module %(mod)s') %
{'hook': hookname, 'mod': module})
func(args)
def _set_blacklisted(self):
blist = set()
if dom.opts.has_option('modules', 'blacklist'):
_blacklist = dom.opts.get('modules', 'blacklist')
blist = set(_blacklist.split())
for module in self._instances:
if module in blist:
self._instances[module]._disabled = True
debug(_('Module %s is blacklisted') % module)
def _set_relationships(self):
for module in self._instances:
try:
deps = getattr(self._instances[module], 'dependencies')
if deps:
for dep in deps:
self._instances[module]._depends.add(dep)
except AttributeError:
pass
try:
afters = getattr(self._instances[module], 'after')
if afters:
for after in afters:
self._instances[module]._after.add(after)
except AttributeError:
pass
try:
befores = getattr(self._instances[module], 'before')
if befores:
for before in befores:
if before in self._instances:
self._instances[before]._after.add(module)
except AttributeError:
pass
try:
if getattr(self._instances[module], 'first'):
deps = (self._instances[module]._depends.union(
self._instances[module]._after))
if deps:
self._instances[module]._disabled = True
debug(_('Cannot execute %(mod)s as %(order)s module, '
'dependencies found: %(deps)s')
% {'mod': module, 'order': 'first',
'deps': ', '.join(deps)})
else:
for instance in self._instances:
self._instances[instance]._after.add(module)
except AttributeError:
pass
try:
if getattr(self._instances[module], 'last'):
deps = [m for m in self._instances
if module in self._instances[m]._after or
module in self._instances[m]._depends]
if deps:
self._instances[module]._disabled = True
debug(_('Cannot execute %(mod)s as %(order)s module, '
'dependencies found: %(deps)s')
% {'mod': module, 'order': 'last',
'deps': ', '.join(deps)})
else:
for instance in self._instances:
self._instances[module]._after.add(instance)
except AttributeError:
pass
if module in self._instances[module]._depends:
self._instances[module]._depend.remove(module)
if module in self._instances[module]._after:
self._instances[module]._after.remove(module)
def _sort_modules(self):
modules = {}
for instance in self._instances:
if not self._instances[instance]._disabled:
_deps = self._instances[instance]._depends
_afters = self._instances[instance]._after
modules[instance] = _deps.union(_afters)
try:
return [m for m in toposort(modules) if m in self._instances]
except ValueError as e:
circular = findall('.*?\(\'?(\S+?)\'?,', e.args[0])
for instance in circular:
self._instances[instance]._disabled = True
debug(_('Circular dependencies found, disabled modules: %s')
% ', '.join(circular))
return self._sort_modules()
def execute_hook(self, hook):
hooks = []
if self._use_modules:
for module in self._sort_modules():
if self._instances[module]._disabled:
continue
dependencies = set()
instance = self._instances[module]
for dep in instance._depends.union(instance._after):
if dep in self._instances:
if (dep in instance._after and
self._instances[dep]._disabled):
continue
try:
if getattr(self._instances[dep], hook):
dependencies.add(dep)
except AttributeError:
continue
try:
hooks.append((getattr(instance, hook),
self.args, module, hook, dependencies))
except AttributeError:
pass
if dom.opts.has_option('modules', 'threads'):
workers = dom.opts.getint('modules', 'threads')
else:
workers = 1
debug(_('%s hooks launched') % hook)
modulepool = ModulePool(workers)
for hk in hooks:
modulepool.schedule(self._launcher, hk)
modulepool.shutdown()
debug(_('%s hooks finished') % hook)
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