odoo/openerp/modules/graph.py

218 lines
7.6 KiB
Python

# -*- coding: utf-8 -*-
##############################################################################
#
# OpenERP, Open Source Management Solution
# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
# Copyright (C) 2010-2014 OpenERP s.a. (<http://openerp.com>).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
""" Modules dependency graph. """
import os, sys, imp
from os.path import join as opj
import itertools
import zipimport
import openerp
import openerp.osv as osv
import openerp.tools as tools
import openerp.tools.osutil as osutil
from openerp.tools.safe_eval import safe_eval as eval
from openerp.tools.translate import _
import zipfile
import openerp.release as release
import re
import base64
from zipfile import PyZipFile, ZIP_DEFLATED
from cStringIO import StringIO
import logging
_logger = logging.getLogger(__name__)
class Graph(dict):
""" Modules dependency graph.
The graph is a mapping from module name to Nodes.
"""
def add_node(self, name, info):
max_depth, father = 0, None
for d in info['depends']:
n = self.get(d) or Node(d, self, None) # lazy creation, do not use default value for get()
if n.depth >= max_depth:
father = n
max_depth = n.depth
if father:
return father.add_child(name, info)
else:
return Node(name, self, info)
def update_from_db(self, cr):
if not len(self):
return
# update the graph with values from the database (if exist)
## First, we set the default values for each package in graph
additional_data = dict((key, {'id': 0, 'state': 'uninstalled', 'dbdemo': False, 'installed_version': None}) for key in self.keys())
## Then we get the values from the database
cr.execute('SELECT name, id, state, demo AS dbdemo, latest_version AS installed_version'
' FROM ir_module_module'
' WHERE name IN %s',(tuple(additional_data),)
)
## and we update the default values with values from the database
additional_data.update((x['name'], x) for x in cr.dictfetchall())
for package in self.values():
for k, v in additional_data[package.name].items():
setattr(package, k, v)
def add_module(self, cr, module, force=None):
self.add_modules(cr, [module], force)
def add_modules(self, cr, module_list, force=None):
if force is None:
force = []
packages = []
len_graph = len(self)
for module in module_list:
# This will raise an exception if no/unreadable descriptor file.
# NOTE The call to load_information_from_description_file is already
# done by db.initialize, so it is possible to not do it again here.
info = openerp.modules.module.load_information_from_description_file(module)
if info and info['installable']:
packages.append((module, info)) # TODO directly a dict, like in get_modules_with_version
else:
_logger.warning('module %s: not installable, skipped', module)
dependencies = dict([(p, info['depends']) for p, info in packages])
current, later = set([p for p, info in packages]), set()
while packages and current > later:
package, info = packages[0]
deps = info['depends']
# if all dependencies of 'package' are already in the graph, add 'package' in the graph
if reduce(lambda x, y: x and y in self, deps, True):
if not package in current:
packages.pop(0)
continue
later.clear()
current.remove(package)
node = self.add_node(package, info)
for kind in ('init', 'demo', 'update'):
if package in tools.config[kind] or 'all' in tools.config[kind] or kind in force:
setattr(node, kind, True)
else:
later.add(package)
packages.append((package, info))
packages.pop(0)
self.update_from_db(cr)
for package in later:
unmet_deps = filter(lambda p: p not in self, dependencies[package])
_logger.error('module %s: Unmet dependencies: %s', package, ', '.join(unmet_deps))
result = len(self) - len_graph
if result != len(module_list):
_logger.warning('Some modules were not loaded.')
return result
def __iter__(self):
level = 0
done = set(self.keys())
while done:
level_modules = sorted((name, module) for name, module in self.items() if module.depth==level)
for name, module in level_modules:
done.remove(name)
yield module
level += 1
def __str__(self):
return '\n'.join(str(n) for n in self if n.depth == 0)
class Node(object):
""" One module in the modules dependency graph.
Node acts as a per-module singleton. A node is constructed via
Graph.add_module() or Graph.add_modules(). Some of its fields are from
ir_module_module (setted by Graph.update_from_db()).
"""
def __new__(cls, name, graph, info):
if name in graph:
inst = graph[name]
else:
inst = object.__new__(cls)
graph[name] = inst
return inst
def __init__(self, name, graph, info):
self.name = name
self.graph = graph
self.info = info or getattr(self, 'info', {})
if not hasattr(self, 'children'):
self.children = []
if not hasattr(self, 'depth'):
self.depth = 0
@property
def data(self):
return self.info
def add_child(self, name, info):
node = Node(name, self.graph, info)
node.depth = self.depth + 1
if node not in self.children:
self.children.append(node)
for attr in ('init', 'update', 'demo'):
if hasattr(self, attr):
setattr(node, attr, True)
self.children.sort(lambda x, y: cmp(x.name, y.name))
return node
def __setattr__(self, name, value):
super(Node, self).__setattr__(name, value)
if name in ('init', 'update', 'demo'):
tools.config[name][self.name] = 1
for child in self.children:
setattr(child, name, value)
if name == 'depth':
for child in self.children:
setattr(child, name, value + 1)
def __iter__(self):
return itertools.chain(iter(self.children), *map(iter, self.children))
def __str__(self):
return self._pprint()
def _pprint(self, depth=0):
s = '%s\n' % self.name
for c in self.children:
s += '%s`-> %s' % (' ' * depth, c._pprint(depth+1))
return s
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