374 lines
16 KiB
Python
374 lines
16 KiB
Python
#! /usr/bin/env python
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# Copyright (C) 2011 OpenStack, LLC.
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# Copyright (C) 2013 Hewlett-Packard Development Company, L.P.
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# Copyright (C) 2013 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# run_mirror reads a YAML config file like:
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# cache-root: /tmp/cache
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#
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# mirrors:
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# - name: openstack
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# projects:
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# - https://github.com/openstack/requirements
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# output: /tmp/mirror/openstack
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#
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# - name: openstack-infra
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# projects:
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# - https://github.com/openstack-infra/config
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# output: /tmp/mirror/openstack-infra
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#
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# The algorithm it attempts to follow is:
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#
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# for each project:
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# clone if necessary and fetch origin
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# for each project-branch:
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# create new virtualenv
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# pip install reqs into virtualenv
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# if installation succeeds:
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# pip freeze > full-reqs
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# create new virtualenv
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# pip install (download only) full-reqs into virtualenv
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#
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# By default only summary information is printed on stdout (see the
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# -d command line option to get more debug info).
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#
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# If "pip install" for a branch's requirements fails to complete
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# (based on parsing of its output), that output will be copied to
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# stderr and the script will skip ahead to the next branch. This
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# makes it suitable for running in a cron job with only stdout
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# redirected to a log, and also avoids one broken project preventing
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# caching of requirements for others.
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from __future__ import print_function
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import argparse
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import datetime
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import md5
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import os
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import pkginfo
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import re
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import shlex
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import shutil
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import subprocess
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import sys
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import tempfile
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import urllib
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import yaml
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class Mirror(object):
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def __init__(self):
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parser = argparse.ArgumentParser(
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description='Build a pypi mirror from requirements')
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parser.add_argument('-b', dest='branch',
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help='restrict run to a specified branch')
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parser.add_argument('-c', dest='config',
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help='specify the config file')
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parser.add_argument('-n', dest='noop', action='store_true',
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help='do not run any commands')
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parser.add_argument('--no-pip', dest='no_pip', action='store_true',
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help='do not run any pip commands')
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parser.add_argument('--verbose', dest='debug', action='store_true',
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help='output verbose debug information')
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parser.add_argument('--no-download', dest='no_download',
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action='store_true',
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help='only process the pip cache into a mirror '
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'(do not download)')
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parser.add_argument('--no-process', dest='no_process',
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action='store_true',
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help='only download into the pip cache '
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'(do not process the cache into a mirror)')
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parser.add_argument('--no-update', dest='no_update',
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action='store_true',
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help='do not update any git repos')
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self.args = parser.parse_args()
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self.config = yaml.load(open(self.args.config))
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def run_command(self, cmd):
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cmd_list = shlex.split(str(cmd))
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self.debug("Run: %s" % cmd)
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if self.args.noop:
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return ''
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if self.args.no_pip and cmd_list[0].endswith('pip'):
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return ''
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p = subprocess.Popen(cmd_list, stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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(out, nothing) = p.communicate()
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out = out.strip()
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self.debug(out)
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return out
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def run(self):
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for mirror in self.config['mirrors']:
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if not self.args.no_download:
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self.build_mirror(mirror)
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if not self.args.no_process:
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self.process_cache(mirror)
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def chdir(self, dest):
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self.debug("cd %s" % dest)
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if not self.args.noop:
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os.chdir(dest)
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def debug(self, msg):
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if self.args.debug:
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print(msg)
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def process_http_requirements(self, reqlist, pip_cache_dir, pip):
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new_reqs = []
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for reqfile in reqlist:
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for req in open(reqfile):
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req = req.strip()
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# Handle http://, https://, and git+https?://
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if not re.search('https?://', req):
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new_reqs.append(req)
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continue
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target_url = req.split('#', 1)[0]
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target_file = os.path.join(pip_cache_dir,
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urllib.quote(target_url, ''))
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if os.path.exists(target_file):
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self.debug("Unlink: %s" % target_file)
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os.unlink(target_file)
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if os.path.exists(target_file + '.content-type'):
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self.debug("Unlink: %s.content-type" % target_file)
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os.unlink(target_file + '.content-type')
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return new_reqs
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def find_pkg_info(self, path):
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versions = set()
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for root, dirs, files in os.walk(path):
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if not root.endswith('.egg'):
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continue
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if not os.path.exists(os.path.join(root, 'EGG-INFO', 'PKG-INFO')):
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continue
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package = pkginfo.Develop(root)
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versions.add('%s==%s' % (package.name, package.version))
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return versions
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def build_mirror(self, mirror):
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print("Building mirror: %s" % mirror['name'])
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pip_format = ("%s install -U %s --exists-action=w "
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"--download-cache=%s --build %s -r %s")
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venv_format = ("virtualenv --clear --extra-search-dir=%s %s")
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upgrade_format = ("%s install -U --exists-action=w "
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"--download-cache=%s --build %s %s")
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workdir = tempfile.mkdtemp()
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reqs = os.path.join(workdir, "reqs")
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venv = os.path.join(workdir, "venv")
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build = os.path.join(workdir, "build")
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pip = os.path.join(venv, "bin", "pip")
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project_cache_dir = os.path.join(self.config['cache-root'],
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'projects')
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pip_cache_dir = os.path.join(self.config['cache-root'],
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'pip', mirror['name'])
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if not self.args.noop:
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if not os.path.exists(project_cache_dir):
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os.makedirs(project_cache_dir)
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if not os.path.exists(pip_cache_dir):
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os.makedirs(pip_cache_dir)
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for project in mirror['projects']:
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print("Updating repository: %s" % project)
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self.chdir(project_cache_dir)
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short_project = project.split('/')[-1]
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if short_project.endswith('.git'):
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short_project = short_project[:-4]
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if not os.path.isdir(short_project):
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out = self.run_command("git clone %s %s" %
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(project, short_project))
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self.chdir(os.path.join(project_cache_dir,
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short_project))
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out = self.run_command("git fetch -p origin")
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if self.args.branch:
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branches = [self.args.branch]
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else:
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branches = self.run_command("git branch -a").split("\n")
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for branch in branches:
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branch = branch.strip()
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if (not branch.startswith("remotes/origin")
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or "origin/HEAD" in branch):
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continue
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print("Fetching pip requires for %s:%s" %
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(project, branch))
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if not self.args.no_update:
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out = self.run_command("git reset --hard %s" % branch)
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out = self.run_command("git clean -x -f -d -q")
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reqlist = []
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if os.path.exists('global-requirements.txt'):
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reqlist.append('global-requirements.txt')
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else:
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for requires_file in ("requirements.txt",
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"test-requirements.txt",
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"tools/pip-requires",
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"tools/test-requires"):
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if os.path.exists(requires_file):
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reqlist.append(requires_file)
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if reqlist:
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out = self.run_command(venv_format %
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(pip_cache_dir, venv))
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out = self.run_command(upgrade_format %
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(pip, pip_cache_dir,
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build, "setuptools"))
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out = self.run_command(upgrade_format %
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(pip, pip_cache_dir,
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build, "pip"))
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out = self.run_command(upgrade_format %
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(pip, pip_cache_dir,
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build, "virtualenv"))
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if os.path.exists(build):
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shutil.rmtree(build)
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new_reqs = self.process_http_requirements(reqlist,
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pip_cache_dir,
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pip)
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(reqfp, reqfn) = tempfile.mkstemp()
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os.write(reqfp, '\n'.join(new_reqs))
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os.close(reqfp)
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out = self.run_command(pip_format %
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(pip, "", pip_cache_dir,
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build, reqfn))
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if "\nSuccessfully installed " not in out:
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sys.stderr.write("Installing pip requires for %s:%s "
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"failed.\n%s\n" %
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(project, branch, out))
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print("pip install did not indicate success")
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else:
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freeze = self.run_command("%s freeze -l" % pip)
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requires = self.find_pkg_info(build)
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reqfd = open(reqs, "w")
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for line in freeze.split("\n"):
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if line.startswith("-e ") or (
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"==" in line and " " not in line):
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requires.add(line)
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for r in requires:
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reqfd.write(r + "\n")
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reqfd.close()
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out = self.run_command(venv_format %
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(pip_cache_dir, venv))
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if os.path.exists(build):
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shutil.rmtree(build)
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out = self.run_command(pip_format %
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(pip, "--no-install",
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pip_cache_dir, build, reqs))
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if "\nSuccessfully downloaded " not in out:
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sys.stderr.write("Downloading pip requires for "
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"%s:%s failed.\n%s\n" %
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(project, branch, out))
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print("pip install did not indicate success")
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print("cached:\n%s" % freeze)
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else:
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print("no requirements")
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shutil.rmtree(workdir)
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def process_cache(self, mirror):
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if self.args.noop:
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return
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pip_cache_dir = os.path.join(self.config['cache-root'],
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'pip', mirror['name'])
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destination_mirror = mirror['output']
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PACKAGE_VERSION_RE = re.compile(r'(.*)-[0-9]')
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full_html_line = "<a href='{dir}/{name}'>{name}</a><br />\n"
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packages = {}
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package_count = 0
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if not os.path.exists(destination_mirror):
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os.makedirs(destination_mirror)
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for filename in os.listdir(pip_cache_dir):
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if filename.endswith('content-type'):
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continue
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realname = urllib.unquote(filename)
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# The ? accounts for sourceforge downloads
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tarball = os.path.basename(realname).split("?")[0]
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name_match = PACKAGE_VERSION_RE.search(tarball)
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if name_match is None:
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continue
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package_name = name_match.group(1)
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version_list = packages.get(package_name, {})
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version_list[tarball] = filename
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packages[package_name] = version_list
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package_count = package_count + 1
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full_html = open(os.path.join(destination_mirror, ".full.html"), 'w')
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simple_html = open(os.path.join(destination_mirror, ".index.html"),
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'w')
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header = ("<html><head><title>PyPI Mirror</title></head>"
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"<body><h1>PyPI Mirror</h1><h2>Last update: %s</h2>\n\n"
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% datetime.datetime.utcnow().strftime("%c UTC"))
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full_html.write(header)
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simple_html.write(header)
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for package_name, versions in packages.items():
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destination_dir = os.path.join(destination_mirror, package_name)
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if not os.path.isdir(destination_dir):
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os.makedirs(destination_dir)
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safe_dir = urllib.quote(package_name)
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simple_html.write("<a href='%s'>%s</a><br />\n" %
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(safe_dir, safe_dir))
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with open(os.path.join(destination_dir, ".index.html"),
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'w') as index:
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index.write("""<html><head>
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<title>%s – PyPI Mirror</title>
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</head><body>\n""" % package_name)
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for tarball, filename in versions.items():
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source_path = os.path.join(pip_cache_dir, filename)
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destination_path = os.path.join(destination_dir,
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tarball)
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dot_destination_path = os.path.join(destination_dir,
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'.' + tarball)
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with open(dot_destination_path, 'w') as dest:
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src = open(source_path, 'r').read()
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md5sum = md5.md5(src).hexdigest()
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dest.write(src)
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safe_name = urllib.quote(tarball)
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full_html.write(full_html_line.format(dir=safe_dir,
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name=safe_name))
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index.write("<a href='%s#md5=%s'>%s</a>\n" %
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(safe_name, md5sum, safe_name))
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os.rename(dot_destination_path, destination_path)
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index.write("</body></html>\n")
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os.rename(os.path.join(destination_dir, ".index.html"),
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os.path.join(destination_dir, "index.html"))
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footer = """<p class='footer'>Generated by process_cache.py; %d
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packages mirrored. </p>
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</body></html>\n""" % package_count
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full_html.write(footer)
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full_html.close()
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os.rename(os.path.join(destination_mirror, ".full.html"),
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os.path.join(destination_mirror, "full.html"))
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simple_html.write(footer)
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simple_html.close()
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os.rename(os.path.join(destination_mirror, ".index.html"),
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os.path.join(destination_mirror, "index.html"))
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def main():
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mb = Mirror()
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mb.run()
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if __name__ == "__main__":
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main()
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