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# Copyright (C) 2009 Canonical Ltd
#
# 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; either version 2 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 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
"""Tools for dealing with the Launchpad API."""
# Importing this module will be expensive, since it imports launchpadlib and
# its dependencies. However, our plan is to only load this module when it is
# needed by a command that uses it.
import os
from bzrlib import (
config,
errors,
osutils,
)
from bzrlib.plugins.launchpad.lp_registration import (
InvalidLaunchpadInstance,
NotLaunchpadBranch,
)
try:
import launchpadlib
except ImportError, e:
raise errors.DependencyNotPresent('launchpadlib', e)
from launchpadlib.launchpad import (
EDGE_SERVICE_ROOT,
STAGING_SERVICE_ROOT,
Launchpad,
)
# Declare the minimum version of launchpadlib that we need in order to work.
# 1.5.1 is the version of launchpadlib packaged in Ubuntu 9.10, the most
# recent Ubuntu release at the time of writing.
MINIMUM_LAUNCHPADLIB_VERSION = (1, 5, 1)
def get_cache_directory():
"""Return the directory to cache launchpadlib objects in."""
return osutils.pathjoin(config.config_dir(), 'launchpad')
def parse_launchpadlib_version(version_number):
"""Parse a version number of the style used by launchpadlib."""
return tuple(map(int, version_number.split('.')))
def check_launchpadlib_compatibility():
"""Raise an error if launchpadlib has the wrong version number."""
installed_version = parse_launchpadlib_version(launchpadlib.__version__)
if installed_version < MINIMUM_LAUNCHPADLIB_VERSION:
raise errors.IncompatibleAPI(
'launchpadlib', MINIMUM_LAUNCHPADLIB_VERSION,
installed_version, installed_version)
LAUNCHPAD_API_URLS = {
'production': 'https://api.launchpad.net/beta/',
'edge': EDGE_SERVICE_ROOT,
'staging': STAGING_SERVICE_ROOT,
'dev': 'https://api.launchpad.dev/beta/',
}
def _get_api_url(service):
"""Return the root URL of the Launchpad API.
e.g. For the 'edge' Launchpad service, this function returns
launchpadlib.launchpad.EDGE_SERVICE_ROOT.
:param service: A `LaunchpadService` object.
:return: A URL as a string.
"""
if service._lp_instance is None:
lp_instance = service.DEFAULT_INSTANCE
else:
lp_instance = service._lp_instance
try:
return LAUNCHPAD_API_URLS[lp_instance]
except KeyError:
raise InvalidLaunchpadInstance(lp_instance)
def login(service, timeout=None, proxy_info=None):
"""Log in to the Launchpad API.
:return: The root `Launchpad` object from launchpadlib.
"""
cache_directory = get_cache_directory()
launchpad = Launchpad.login_with(
'bzr', _get_api_url(service), cache_directory, timeout=timeout,
proxy_info=proxy_info)
# XXX: Work-around a minor security bug in launchpadlib 1.5.1, which would
# create this directory with default umask.
os.chmod(cache_directory, 0700)
return launchpad
def load_branch(launchpad, branch):
"""Return the launchpadlib Branch object corresponding to 'branch'.
:param launchpad: The root `Launchpad` object from launchpadlib.
:param branch: A `bzrlib.branch.Branch`.
:raise NotLaunchpadBranch: If we cannot determine the Launchpad URL of
`branch`.
:return: A launchpadlib Branch object.
"""
# XXX: This duplicates the "What are possible URLs for the branch that
# Launchpad might recognize" logic found in cmd_lp_open.
# XXX: This makes multiple roundtrips to Launchpad for what is
# conceptually a single operation -- get me the branches that match these
# URLs. Unfortunately, Launchpad's support for such operations is poor, so
# we have to allow multiple roundtrips.
for url in branch.get_public_branch(), branch.get_push_location():
lp_branch = launchpad.branches.getByUrl(url=url)
if lp_branch:
return lp_branch
raise NotLaunchpadBranch(url)
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