1
# Copyright (C) 2009, 2010 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
"""Tools for dealing with the Launchpad API."""
19
# Importing this module will be expensive, since it imports launchpadlib and
20
# its dependencies. However, our plan is to only load this module when it is
21
# needed by a command that uses it.
36
from bzrlib.plugins.launchpad.lp_registration import (
37
InvalidLaunchpadInstance,
42
except ImportError, e:
43
raise errors.DependencyNotPresent('launchpadlib', e)
45
from launchpadlib.launchpad import (
51
# Declare the minimum version of launchpadlib that we need in order to work.
52
# 1.5.1 is the version of launchpadlib packaged in Ubuntu 9.10, the most
53
# recent Ubuntu release at the time of writing.
54
MINIMUM_LAUNCHPADLIB_VERSION = (1, 5, 1)
57
def get_cache_directory():
58
"""Return the directory to cache launchpadlib objects in."""
59
return osutils.pathjoin(config.config_dir(), 'launchpad')
62
def parse_launchpadlib_version(version_number):
63
"""Parse a version number of the style used by launchpadlib."""
64
return tuple(map(int, version_number.split('.')))
67
def check_launchpadlib_compatibility():
68
"""Raise an error if launchpadlib has the wrong version number."""
69
installed_version = parse_launchpadlib_version(launchpadlib.__version__)
70
if installed_version < MINIMUM_LAUNCHPADLIB_VERSION:
71
raise errors.IncompatibleAPI(
72
'launchpadlib', MINIMUM_LAUNCHPADLIB_VERSION,
73
installed_version, installed_version)
76
# The older versions of launchpadlib only provided service root constants for
77
# edge and staging, whilst newer versions drop edge. Therefore service root
78
# URIs for which we do not always have constants are derived from the staging
79
# one, which does always exist.
81
# It is necessary to derive, rather than use hardcoded URIs because
82
# launchpadlib <= 1.5.4 requires service root URIs that end in a path of
83
# /beta/, whilst launchpadlib >= 1.5.5 requires service root URIs with no path
86
# Once we have a hard dependency on launchpadlib >= 1.5.4 we can replace all of
87
# bzr's local knowledge of individual Launchpad instances with use of the
88
# launchpadlib.uris module.
89
LAUNCHPAD_API_URLS = {
90
'production': STAGING_SERVICE_ROOT.replace('api.staging.launchpad.net',
92
'qastaging': STAGING_SERVICE_ROOT.replace('api.staging.launchpad.net',
93
'api.qastaging.launchpad.net'),
94
'staging': STAGING_SERVICE_ROOT,
95
'dev': STAGING_SERVICE_ROOT.replace('api.staging.launchpad.net',
100
def _get_api_url(service):
101
"""Return the root URL of the Launchpad API.
103
e.g. For the 'staging' Launchpad service, this function returns
104
launchpadlib.launchpad.STAGING_SERVICE_ROOT.
106
:param service: A `LaunchpadService` object.
107
:return: A URL as a string.
109
if service._lp_instance is None:
110
lp_instance = service.DEFAULT_INSTANCE
112
lp_instance = service._lp_instance
114
return LAUNCHPAD_API_URLS[lp_instance]
116
raise InvalidLaunchpadInstance(lp_instance)
119
class NoLaunchpadBranch(errors.BzrError):
120
_fmt = 'No launchpad branch could be found for branch "%(url)s".'
122
def __init__(self, branch):
123
errors.BzrError.__init__(self, branch=branch, url=branch.base)
126
def login(service, timeout=None, proxy_info=None):
127
"""Log in to the Launchpad API.
129
:return: The root `Launchpad` object from launchpadlib.
131
cache_directory = get_cache_directory()
132
launchpad = Launchpad.login_with(
133
'bzr', _get_api_url(service), cache_directory, timeout=timeout,
134
proxy_info=proxy_info)
135
# XXX: Work-around a minor security bug in launchpadlib 1.5.1, which would
136
# create this directory with default umask.
137
os.chmod(cache_directory, 0700)
141
class LaunchpadBranch(object):
142
"""Provide bzr and lp API access to a Launchpad branch."""
144
def __init__(self, lp_branch, bzr_url, bzr_branch=None, check_update=True):
147
:param lp_branch: The Launchpad branch.
148
:param bzr_url: The URL of the Bazaar branch.
149
:param bzr_branch: An instance of the Bazaar branch.
151
self.bzr_url = bzr_url
152
self._bzr = bzr_branch
153
self._push_bzr = None
154
self._check_update = check_update
159
"""Return the bzr branch for this branch."""
160
if self._bzr is None:
161
self._bzr = branch.Branch.open(self.bzr_url)
166
"""Return the push branch for this branch."""
167
if self._push_bzr is None:
168
self._push_bzr = branch.Branch.open(self.lp.bzr_identity)
169
return self._push_bzr
172
def plausible_launchpad_url(url):
173
"""Is 'url' something that could conceivably be pushed to LP?
175
:param url: A URL that may refer to a Launchpad branch.
180
if url.startswith('lp:'):
182
regex = re.compile('([a-z]*\+)*(bzr\+ssh|http)'
183
'://bazaar.*.launchpad.net')
184
return bool(regex.match(url))
187
def candidate_urls(bzr_branch):
188
"""Iterate through related URLs that might be Launchpad URLs.
190
:param bzr_branch: A Bazaar branch to find URLs from.
191
:return: a generator of URL strings.
193
url = bzr_branch.get_public_branch()
196
url = bzr_branch.get_push_location()
199
url = bzr_branch.get_parent()
202
yield bzr_branch.base
205
def tweak_url(url, launchpad):
206
"""Adjust a URL to work with staging, if needed."""
207
if str(launchpad._root_uri) == STAGING_SERVICE_ROOT:
208
return url.replace('bazaar.launchpad.net',
209
'bazaar.staging.launchpad.net')
210
elif str(launchpad._root_uri) == LAUNCHPAD_API_URLS['qastaging']:
211
return url.replace('bazaar.launchpad.net',
212
'bazaar.qastaging.launchpad.net')
216
def from_bzr(cls, launchpad, bzr_branch, create_missing=True):
217
"""Find a Launchpad branch from a bzr branch."""
219
for url in cls.candidate_urls(bzr_branch):
220
url = cls.tweak_url(url, launchpad)
221
if not cls.plausible_launchpad_url(url):
223
lp_branch = launchpad.branches.getByUrl(url=url)
224
if lp_branch is not None:
227
if not create_missing:
228
raise NoLaunchpadBranch(bzr_branch)
229
lp_branch = cls.create_now(launchpad, bzr_branch)
231
return cls(lp_branch, bzr_branch.base, bzr_branch, check_update)
234
def create_now(cls, launchpad, bzr_branch):
235
"""Create a Bazaar branch on Launchpad for the supplied branch."""
236
url = cls.tweak_url(bzr_branch.get_push_location(), launchpad)
237
if not cls.plausible_launchpad_url(url):
238
raise errors.BzrError('%s is not registered on Launchpad' %
240
bzr_branch.create_clone_on_transport(transport.get_transport(url))
241
lp_branch = launchpad.branches.getByUrl(url=url)
242
if lp_branch is None:
243
raise errors.BzrError('%s is not registered on Launchpad' % url)
246
def get_target(self):
247
"""Return the 'LaunchpadBranch' for the target of this one."""
249
if lp_branch.project is not None:
250
dev_focus = lp_branch.project.development_focus
251
if dev_focus is None:
252
raise errors.BzrError('%s has no development focus.' %
253
lp_branch.bzr_identity)
254
target = dev_focus.branch
256
raise errors.BzrError('development focus %s has no branch.' % dev_focus)
257
elif lp_branch.sourcepackage is not None:
258
target = lp_branch.sourcepackage.getBranch(pocket="Release")
260
raise errors.BzrError('source package %s has no branch.' %
261
lp_branch.sourcepackage)
263
raise errors.BzrError('%s has no associated product or source package.' %
264
lp_branch.bzr_identity)
265
return LaunchpadBranch(target, target.bzr_identity)
268
"""Update the Launchpad copy of this branch."""
269
if not self._check_update:
273
if self.lp.last_scanned_id is not None:
274
if self.bzr.last_revision() == self.lp.last_scanned_id:
275
trace.note('%s is already up-to-date.' %
276
self.lp.bzr_identity)
278
graph = self.bzr.repository.get_graph()
279
if not graph.is_ancestor(self.lp.last_scanned_id,
280
self.bzr.last_revision()):
281
raise errors.DivergedBranches(self.bzr, self.push_bzr)
282
trace.note('Pushing to %s' % self.lp.bzr_identity)
283
self.bzr.push(self.push_bzr)
287
def find_lca_tree(self, other):
288
"""Find the revision tree for the LCA of this branch and other.
290
:param other: Another LaunchpadBranch
291
:return: The RevisionTree of the LCA of this branch and other.
293
graph = self.bzr.repository.get_graph(other.bzr.repository)
294
lca = graph.find_unique_lca(self.bzr.last_revision(),
295
other.bzr.last_revision())
296
return self.bzr.repository.revision_tree(lca)
299
def canonical_url(object):
300
"""Return the canonical URL for a branch."""
301
scheme, netloc, path, params, query, fragment = urlparse.urlparse(
302
str(object.self_link))
303
path = '/'.join(path.split('/')[2:])
304
netloc = netloc.replace('api.', 'code.')
305
return urlparse.urlunparse((scheme, netloc, path, params, query,