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#!/usr/bin/env python
# Copyright 2013 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Distutils installer for MAAS."""
# unicode_literals is *not* included here to *better* support setup
# scripts that work on both Python 2 and 3. Both expect their default
# string type, and are fussy about it.
from __future__ import (
absolute_import,
print_function,
)
__version__ = "1.4"
__metaclass__ = type
from codecs import open
from contextlib import contextmanager
from distutils import (
errors,
log,
)
from inspect import getsourcefile
from operator import methodcaller
from os import environ
import setuptools
@contextmanager
def envvar(name, value):
"""Context manager for temporarily setting an environment variable."""
original = environ.get(name)
environ[name] = value
try:
yield
finally:
if original is None:
environ.pop(name, None)
else:
environ[name] = original
class install_deps(setuptools.Command):
"""Distutils/setuptools command to install package dependencies."""
user_options = [
('list-from=', None,
"file from which to read packages to install"),
]
def initialize_options(self):
self.list_from = "packages.txt"
def gen_package_ops(self, package_lines):
install = methodcaller("mark_install")
delete = methodcaller("mark_delete", purge=True)
for line in package_lines:
if len(line) == 0:
pass # Ignore blank lines.
elif line.startswith("#"):
pass # Ignore whole-line comments.
elif line.endswith("-"):
package_name = line.rstrip("-")
yield package_name, delete
else:
package_name = line.rstrip("+")
yield package_name, install
def finalize_options(self):
self.ensure_filename("list_from")
self.packages = set()
with open(self.list_from, "r", encoding="utf-8") as fd:
lines = (line.strip() for line in fd)
self.package_ops = dict(self.gen_package_ops(lines))
self.packages = set(self.package_ops)
def run(self):
self.calculate_changes()
if len(self.changes) > 0:
self.apply_changes()
def calculate_changes(self):
from apt import Cache
cache = Cache()
for package_name, op in self.package_ops.iteritems():
op(cache[package_name])
self.changes = cache.get_changes()
def get_packages_to_install(self):
return self.packages.intersection(
package.name for package in self.changes
if package.marked_install or package.marked_upgrade)
def get_packages_to_delete(self):
return self.packages.intersection(
package.name for package in self.changes
if package.marked_delete)
def apply_changes(self):
"""Use ``apt`` to check for package installs.
Spawns ``apt-get`` if necessary.
"""
to_install = {
"%s+" % package
for package in self.get_packages_to_install()
}
if len(to_install) == 0:
log.info("system dependencies are all in place")
to_delete = {
"%s-" % package
for package in self.get_packages_to_delete()
}
if len(to_delete) == 0:
log.info("no forbidden system dependencies are installed")
to_do = sorted(to_install | to_delete)
if len(to_do) > 0:
install = [
"sudo", "apt-get", "--assume-yes",
"--no-install-recommends", "--purge",
"install",
]
with envvar("DEBIAN_FRONTEND", "noninteractive"):
self.spawn(install + to_do)
def check_settings(settings):
"""Check setup settings for obvious issues.
- ``data_files`` should not be specified; setuptools ignores it.
- ``include_package_data`` should not be specified; it has weird
behaviour in setuptools.
"""
if "data_files" in settings:
raise errors.DistutilsOptionError(
"data_files is ignored by setuptools")
if "include_package_data" in settings:
raise errors.DistutilsOptionError(
"include_package_data does not work as you "
"might expect with setuptools")
def setup(**kwargs):
"""MAAS-specific setup function.
Determines sensible defaults for many parameters.
"""
command_classes = {}
try:
import apt
except ImportError:
log.warn("apt not available (install 'python-apt'?)")
else:
command_classes["install_deps"] = install_deps
apt # Silence lint.
settings = {
"cmdclass": command_classes,
"packages": setuptools.find_packages(".", exclude={"common"}),
"version": __version__,
"maintainer": "Canonical",
"maintainer_email": "maas-devel@lists.launchpad.net",
"url": "https://launchpad.net/maas",
"license": "AGPLv3",
"test_loader": "maastesting.loader:MAASTestLoader",
"test_suite": ".",
"tests_require": {"maas-testing >= %s" % __version__},
}
settings.update(kwargs)
check_settings(settings)
return setuptools.setup(**settings)
def configure(**settings):
"""Create a new ``setup.py`` file in the currnet directory.
Uses the file in which this function is originally defined as a
template, adding on a call to ``setup`` with the given ``settings``.
"""
check_settings(settings)
thisfile = getsourcefile(configure)
with open(thisfile, "r", encoding="utf-8") as fin:
template = fin.read()
with open("setup.py", "w", encoding="utf-8") as fout:
fout.write(template)
fout.write(b"\n\nsetup(**%r)\n" % settings)
setup(**{'install_requires': ['celery >= 2.5.3', 'crochet >= 1.0.0', 'formencode >= 1.2.4', 'lxml >= 3.2.0', 'maas-apiclient >= 1.4', 'netaddr >= 0.7.7', 'netifaces >= 0.8', 'oops >= 0.0.10', 'oops-datedir-repo >= 0.0.15', 'oops-twisted >= 0.0.6', 'paramiko >= 1.10.1', 'pexpect >= 3.1', 'python-seamicroclient >= 0.1', 'PyYAML >= 3.1.0', 'simplejson >= 3.3.0', 'tempita >= 0.5.1', 'twisted >= 13.0.0', 'txamqp >= 0.6.1', 'zope.interface >= 4.0.5'], 'entry_points': {'console_scripts': set(['maas-cluster-worker = maascluster.entrypoints:celeryd', 'maas-cluster-twistd = maascluster.entrypoints:twistd', 'maas-probe-dhcp = maascluster.entrypoints:probe_dhcp', 'maas-provision = maascluster.entrypoints:provision'])}, 'name': 'maas-cluster', 'tests_require': ['fixtures >= 0.3.8', 'maas-testing >= 1.4', 'mock >= 1.0b1', 'rabbitfixture >= 0.3.5', 'testtools >= 0.9.32'], 'description': 'MAAS Provisioning Server (part of a Cluster Controller).'})
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