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#!/usr/bin/env python
#
# Create a Baserock .lorry file for a given Python package
#
# Copyright (C) 2014 Codethink Limited
#
# 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 2 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
from __future__ import print_function
import subprocess
import requests
import json
import sys
import shutil
import tempfile
import xmlrpclib
PYPI_URL = 'http://pypi.python.org/pypi'
def fetch_package_metadata(package_name):
return requests.get('%s/%s/json'
% (PYPI_URL, package_name)).json()
def is_repo(url):
vcss = [('git', 'clone'), ('hg', 'clone'),
('svn', 'checkout'), ('bzr', 'branch')]
for (vcs, vcs_command) in vcss:
tempdir = tempfile.mkdtemp()
p = subprocess.Popen([vcs, vcs_command, url], stdout=subprocess.PIPE,
stderr=subprocess.PIPE, cwd=tempdir)
p.wait()
shutil.rmtree(tempdir)
if p.returncode == 0:
return True
return False
# also we only allow tar urls >.>
# need a compression flag for bzip I think >.>
def make_tarball_lorry(name, url):
return '''{
"%s-tarball": {
"type": "tarball",
"url": "%s"
}
}''' % (name, url)
def ask_user(client, xs, fn, prompt='--> '):
for n, x in enumerate(xs, 1):
print('[%s]: %s' % (n, fn(x)))
print('')
s = raw_input(prompt)
choice = int(s) if s.isdigit() else None
choice = choice - 1 if choice != None and choice <= len(xs) else None
if choice == None:
print("Invalid choice, exiting", file=sys.stderr)
sys.exit(1)
return choice
def filter_urls(urls):
allowed_extensions = ['tar.gz', 'tgz', 'tar.Z', '.tar.bz2', 'tbz2',
'tar.lzma', 'tar.xz', 'tlz', 'txz', 'tar']
def allowed_extension(url):
return ('.'.join(url['url'].split('.')[-2:]) in allowed_extensions
or url['url'].split('.')[-1:] in allowed_extensions)
return filter(allowed_extension, urls)
def generate_lorry_from_tarball(package_name):
client = xmlrpclib.ServerProxy(PYPI_URL)
releases = client.package_releases(package_name)
if len(releases) == 0:
print("Couldn't find any releases for packge %s, exiting" % package_name)
sys.exit(1)
def f(release):
return client.release_data(package_name, release)['name'] + ' ' + release
choice = (ask_user(client, releases, f, prompt='Select release: ')
if len(releases) > 1 else 0)
release_version = releases[choice]
urls = filter_urls(client.release_urls(package_name, release_version))
if len(urls) == 0:
print("Couldn't get download urls for package %s with release %s, exiting"
% (package_name, release_version), file=sys.stderr)
sys.exit(1)
choice = (ask_user(client, urls, lambda url: url['url'],
prompt='Select url: ') if len(urls) > 1 else 0)
url = urls[choice]['url']
return make_tarball_lorry(package_name, url)
if len(sys.argv) != 2:
print('usage: %s python_package' % sys.argv[0], file=sys.stderr)
sys.exit(1)
package_name = sys.argv[1]
metadata = fetch_package_metadata(package_name)
info = metadata['info']
if 'home_page' in info:
if is_repo(info['home_page']):
# lorry this thing
print('not implemented yet: lorry from ', info['home_page'])
else:
print(generate_lorry_from_tarball(package_name))
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