← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/plugins/launchpad/lp_api.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2010-02-18 04:59:30 UTC
  • mfrom: (4969.2.20 lpsubmit)
  • Revision ID: pqm@pqm.ubuntu.com-20100218045930-ycl34opyvhowbskr
(abentley, jml) provide propose-merge command.

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/plugins/launchpad/lp_api.py
22
22
 
23
23
 
24
24
import os
 
25
import re
25
26
 
26
27
from bzrlib import (
 
28
    branch,
27
29
    config,
28
30
    errors,
29
31
    osutils,
 
32
    trace,
 
33
    transport,
30
34
    )
31
35
from bzrlib.plugins.launchpad.lp_registration import (
32
36
    InvalidLaunchpadInstance,
112
116
    return launchpad
113
117
 
114
118
 
 
119
class LaunchpadBranch(object):
 
120
    """Provide bzr and lp API access to a Launchpad branch."""
 
121
 
 
122
    def __init__(self, lp_branch, bzr_url, bzr_branch=None, check_update=True):
 
123
        """Constructor.
 
124
 
 
125
        :param lp_branch: The Launchpad branch.
 
126
        :param bzr_url: The URL of the Bazaar branch.
 
127
        :param bzr_branch: An instance of the Bazaar branch.
 
128
        """
 
129
        self.bzr_url = bzr_url
 
130
        self._bzr = bzr_branch
 
131
        self._push_bzr = None
 
132
        self._check_update = check_update
 
133
        self.lp = lp_branch
 
134
 
 
135
    @property
 
136
    def bzr(self):
 
137
        """Return the bzr branch for this branch."""
 
138
        if self._bzr is None:
 
139
            self._bzr = branch.Branch.open(self.bzr_url)
 
140
        return self._bzr
 
141
 
 
142
    @property
 
143
    def push_bzr(self):
 
144
        """Return the push branch for this branch."""
 
145
        if self._push_bzr is None:
 
146
            self._push_bzr = branch.Branch.open(self.lp.bzr_identity)
 
147
        return self._push_bzr
 
148
 
 
149
    @staticmethod
 
150
    def plausible_launchpad_url(url):
 
151
        """Is 'url' something that could conceivably be pushed to LP?
 
152
 
 
153
        :param url: A URL that may refer to a Launchpad branch.
 
154
        :return: A boolean.
 
155
        """
 
156
        if url is None:
 
157
            return False
 
158
        if url.startswith('lp:'):
 
159
            return True
 
160
        regex = re.compile('([a-z]*\+)*(bzr\+ssh|http)'
 
161
                           '://bazaar.*.launchpad.net')
 
162
        return bool(regex.match(url))
 
163
 
 
164
    @staticmethod
 
165
    def candidate_urls(bzr_branch):
 
166
        """Iterate through related URLs that might be Launchpad URLs.
 
167
 
 
168
        :param bzr_branch: A Bazaar branch to find URLs from.
 
169
        :return: a generator of URL strings.
 
170
        """
 
171
        url = bzr_branch.get_public_branch()
 
172
        if url is not None:
 
173
            yield url
 
174
        url = bzr_branch.get_push_location()
 
175
        if url is not None:
 
176
            yield url
 
177
        yield bzr_branch.base
 
178
 
 
179
    @staticmethod
 
180
    def tweak_url(url, launchpad):
 
181
        """Adjust a URL to work with staging, if needed."""
 
182
        if str(launchpad._root_uri) != STAGING_SERVICE_ROOT:
 
183
            return url
 
184
        if url is None:
 
185
            return None
 
186
        return url.replace('bazaar.launchpad.net',
 
187
                           'bazaar.staging.launchpad.net')
 
188
 
 
189
    @classmethod
 
190
    def from_bzr(cls, launchpad, bzr_branch):
 
191
        """Find a Launchpad branch from a bzr branch."""
 
192
        check_update = True
 
193
        for url in cls.candidate_urls(bzr_branch):
 
194
            url = cls.tweak_url(url, launchpad)
 
195
            if not cls.plausible_launchpad_url(url):
 
196
                continue
 
197
            lp_branch = launchpad.branches.getByUrl(url=url)
 
198
            if lp_branch is not None:
 
199
                break
 
200
        else:
 
201
            lp_branch = cls.create_now(launchpad, bzr_branch)
 
202
            check_update = False
 
203
        return cls(lp_branch, bzr_branch.base, bzr_branch, check_update)
 
204
 
 
205
    @classmethod
 
206
    def create_now(cls, launchpad, bzr_branch):
 
207
        """Create a Bazaar branch on Launchpad for the supplied branch."""
 
208
        url = cls.tweak_url(bzr_branch.get_push_location(), launchpad)
 
209
        if not cls.plausible_launchpad_url(url):
 
210
            raise errors.BzrError('%s is not registered on Launchpad' %
 
211
                                  bzr_branch.base)
 
212
        bzr_branch.create_clone_on_transport(transport.get_transport(url))
 
213
        lp_branch = launchpad.branches.getByUrl(url=url)
 
214
        if lp_branch is None:
 
215
            raise errors.BzrError('%s is not registered on Launchpad' % url)
 
216
        return lp_branch
 
217
 
 
218
    def get_dev_focus(self):
 
219
        """Return the 'LaunchpadBranch' for the dev focus of this one."""
 
220
        lp_branch = self.lp
 
221
        if lp_branch.project is None:
 
222
            raise errors.BzrError('%s has no product.' %
 
223
                                  lp_branch.bzr_identity)
 
224
        dev_focus = lp_branch.project.development_focus.branch
 
225
        if dev_focus is None:
 
226
            raise errors.BzrError('%s has no development focus.' %
 
227
                                  lp_branch.bzr_identity)
 
228
        return LaunchpadBranch(dev_focus, dev_focus.bzr_identity)
 
229
 
 
230
    def update_lp(self):
 
231
        """Update the Launchpad copy of this branch."""
 
232
        if not self._check_update:
 
233
            return
 
234
        self.bzr.lock_read()
 
235
        try:
 
236
            if self.lp.last_scanned_id is not None:
 
237
                if self.bzr.last_revision() == self.lp.last_scanned_id:
 
238
                    trace.note('%s is already up-to-date.' %
 
239
                               self.lp.bzr_identity)
 
240
                    return
 
241
                graph = self.bzr.repository.get_graph()
 
242
                if not graph.is_ancestor(self.lp.last_scanned_id,
 
243
                                         self.bzr.last_revision()):
 
244
                    raise errors.DivergedBranches(self.bzr, self.push_bzr)
 
245
                trace.note('Pushing to %s' % self.lp.bzr_identity)
 
246
            self.bzr.push(self.push_bzr)
 
247
        finally:
 
248
            self.bzr.unlock()
 
249
 
 
250
    def find_lca_tree(self, other):
 
251
        """Find the revision tree for the LCA of this branch and other.
 
252
 
 
253
        :param other: Another LaunchpadBranch
 
254
        :return: The RevisionTree of the LCA of this branch and other.
 
255
        """
 
256
        graph = self.bzr.repository.get_graph(other.bzr.repository)
 
257
        lca = graph.find_unique_lca(self.bzr.last_revision(),
 
258
                                    other.bzr.last_revision())
 
259
        return self.bzr.repository.revision_tree(lca)
 
260
 
 
261
 
115
262
def load_branch(launchpad, branch):
116
263
    """Return the launchpadlib Branch object corresponding to 'branch'.
117
264