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

  • Committer: Martin Pool
  • Date: 2005-06-28 05:33:40 UTC
  • Revision ID: mbp@sourcefrog.net-20050628053340-ea73b03fbcde9c46
- Remove XMLMixin class in favour of simple pack_xml, unpack_xml functions
  called as needed.  

- Avoid importing xml and ElementTree library unless needed.

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bzrlib/plugins/launchpad/lp_propose.py
1
 
# Copyright (C) 2010, 2011 Canonical Ltd
2
 
#
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.
7
 
#
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.
12
 
#
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
16
 
 
17
 
from bzrlib import (
18
 
    errors,
19
 
    hooks,
20
 
    )
21
 
from bzrlib.lazy_import import lazy_import
22
 
lazy_import(globals(), """
23
 
import webbrowser
24
 
 
25
 
from bzrlib import (
26
 
    msgeditor,
27
 
    )
28
 
from bzrlib.plugins.launchpad import (
29
 
    lp_api,
30
 
    lp_registration,
31
 
    )
32
 
""")
33
 
 
34
 
 
35
 
class ProposeMergeHooks(hooks.Hooks):
36
 
    """Hooks for proposing a merge on Launchpad."""
37
 
 
38
 
    def __init__(self):
39
 
        hooks.Hooks.__init__(self, "bzrlib.plugins.launchpad.lp_propose",
40
 
            "Proposer.hooks")
41
 
        self.add_hook('get_prerequisite',
42
 
            "Return the prerequisite branch for proposing as merge.", (2, 1))
43
 
        self.add_hook('merge_proposal_body',
44
 
            "Return an initial body for the merge proposal message.", (2, 1))
45
 
 
46
 
 
47
 
class Proposer(object):
48
 
 
49
 
    hooks = ProposeMergeHooks()
50
 
 
51
 
    def __init__(self, tree, source_branch, target_branch, message, reviews,
52
 
                 staging=False, approve=False):
53
 
        """Constructor.
54
 
 
55
 
        :param tree: The working tree for the source branch.
56
 
        :param source_branch: The branch to propose for merging.
57
 
        :param target_branch: The branch to merge into.
58
 
        :param message: The commit message to use.  (May be None.)
59
 
        :param reviews: A list of tuples of reviewer, review type.
60
 
        :param staging: If True, propose the merge against staging instead of
61
 
            production.
62
 
        :param approve: If True, mark the new proposal as approved immediately.
63
 
            This is useful when a project permits some things to be approved
64
 
            by the submitter (e.g. merges between release and deployment
65
 
            branches).
66
 
        """
67
 
        self.tree = tree
68
 
        if staging:
69
 
            lp_instance = 'staging'
70
 
        else:
71
 
            lp_instance = 'production'
72
 
        service = lp_registration.LaunchpadService(lp_instance=lp_instance)
73
 
        self.launchpad = lp_api.login(service)
74
 
        self.source_branch = lp_api.LaunchpadBranch.from_bzr(
75
 
            self.launchpad, source_branch)
76
 
        if target_branch is None:
77
 
            self.target_branch = self.source_branch.get_target()
78
 
        else:
79
 
            self.target_branch = lp_api.LaunchpadBranch.from_bzr(
80
 
                self.launchpad, target_branch)
81
 
        self.commit_message = message
82
 
        # XXX: this is where bug lp:583638 could be tackled.
83
 
        if reviews == []:
84
 
            self.reviews = []
85
 
        else:
86
 
            self.reviews = [(self.launchpad.people[reviewer], review_type)
87
 
                            for reviewer, review_type in
88
 
                            reviews]
89
 
        self.approve = approve
90
 
 
91
 
    def get_comment(self, prerequisite_branch):
92
 
        """Determine the initial comment for the merge proposal."""
93
 
        info = ["Source: %s\n" % self.source_branch.lp.bzr_identity]
94
 
        info.append("Target: %s\n" % self.target_branch.lp.bzr_identity)
95
 
        if prerequisite_branch is not None:
96
 
            info.append("Prereq: %s\n" % prerequisite_branch.lp.bzr_identity)
97
 
        for rdata in self.reviews:
98
 
            uniquename = "%s (%s)" % (rdata[0].display_name, rdata[0].name)
99
 
            info.append('Reviewer: %s, type "%s"\n' % (uniquename, rdata[1]))
100
 
        self.source_branch.bzr.lock_read()
101
 
        try:
102
 
            self.target_branch.bzr.lock_read()
103
 
            try:
104
 
                body = self.get_initial_body()
105
 
            finally:
106
 
                self.target_branch.bzr.unlock()
107
 
        finally:
108
 
            self.source_branch.bzr.unlock()
109
 
        initial_comment = msgeditor.edit_commit_message(''.join(info),
110
 
                                                        start_message=body)
111
 
        return initial_comment.strip().encode('utf-8')
112
 
 
113
 
    def get_initial_body(self):
114
 
        """Get a body for the proposal for the user to modify.
115
 
 
116
 
        :return: a str or None.
117
 
        """
118
 
        def list_modified_files():
119
 
            lca_tree = self.source_branch.find_lca_tree(
120
 
                self.target_branch)
121
 
            source_tree = self.source_branch.bzr.basis_tree()
122
 
            files = modified_files(lca_tree, source_tree)
123
 
            return list(files)
124
 
        target_loc = ('bzr+ssh://bazaar.launchpad.net/%s' %
125
 
                       self.target_branch.lp.unique_name)
126
 
        body = None
127
 
        for hook in self.hooks['merge_proposal_body']:
128
 
            body = hook({
129
 
                'tree': self.tree,
130
 
                'target_branch': target_loc,
131
 
                'modified_files_callback': list_modified_files,
132
 
                'old_body': body,
133
 
            })
134
 
        return body
135
 
 
136
 
    def check_proposal(self):
137
 
        """Check that the submission is sensible."""
138
 
        if self.source_branch.lp.self_link == self.target_branch.lp.self_link:
139
 
            raise errors.BzrCommandError(
140
 
                'Source and target branches must be different.')
141
 
        for mp in self.source_branch.lp.landing_targets:
142
 
            if mp.queue_status in ('Merged', 'Rejected'):
143
 
                continue
144
 
            if mp.target_branch.self_link == self.target_branch.lp.self_link:
145
 
                raise errors.BzrCommandError(gettext(
146
 
                    'There is already a branch merge proposal: %s') %
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                    lp_api.canonical_url(mp))
148
 
 
149
 
    def _get_prerequisite_branch(self):
150
 
        hooks = self.hooks['get_prerequisite']
151
 
        prerequisite_branch = None
152
 
        for hook in hooks:
153
 
            prerequisite_branch = hook(
154
 
                {'launchpad': self.launchpad,
155
 
                 'source_branch': self.source_branch,
156
 
                 'target_branch': self.target_branch,
157
 
                 'prerequisite_branch': prerequisite_branch})
158
 
        return prerequisite_branch
159
 
 
160
 
    def call_webservice(self, call, *args, **kwargs):
161
 
        """Make a call to the webservice, wrapping failures.
162
 
        
163
 
        :param call: The call to make.
164
 
        :param *args: *args for the call.
165
 
        :param **kwargs: **kwargs for the call.
166
 
        :return: The result of calling call(*args, *kwargs).
167
 
        """
168
 
        from lazr.restfulclient import errors as restful_errors
169
 
        try:
170
 
            return call(*args, **kwargs)
171
 
        except restful_errors.HTTPError, e:
172
 
            error_lines = []
173
 
            for line in e.content.splitlines():
174
 
                if line.startswith('Traceback (most recent call last):'):
175
 
                    break
176
 
                error_lines.append(line)
177
 
            raise Exception(''.join(error_lines))
178
 
 
179
 
    def create_proposal(self):
180
 
        """Perform the submission."""
181
 
        prerequisite_branch = self._get_prerequisite_branch()
182
 
        if prerequisite_branch is None:
183
 
            prereq = None
184
 
        else:
185
 
            prereq = prerequisite_branch.lp
186
 
            prerequisite_branch.update_lp()
187
 
        self.source_branch.update_lp()
188
 
        reviewers = []
189
 
        review_types = []
190
 
        for reviewer, review_type in self.reviews:
191
 
            review_types.append(review_type)
192
 
            reviewers.append(reviewer.self_link)
193
 
        initial_comment = self.get_comment(prerequisite_branch)
194
 
        mp = self.call_webservice(
195
 
            self.source_branch.lp.createMergeProposal,
196
 
            target_branch=self.target_branch.lp,
197
 
            prerequisite_branch=prereq,
198
 
            initial_comment=initial_comment,
199
 
            commit_message=self.commit_message, reviewers=reviewers,
200
 
            review_types=review_types)
201
 
        if self.approve:
202
 
            self.call_webservice(mp.setStatus, status='Approved')
203
 
        webbrowser.open(lp_api.canonical_url(mp))
204
 
 
205
 
 
206
 
def modified_files(old_tree, new_tree):
207
 
    """Return a list of paths in the new tree with modified contents."""
208
 
    for f, (op, path), c, v, p, n, (ok, k), e in new_tree.iter_changes(
209
 
        old_tree):
210
 
        if c and k == 'file':
211
 
            yield str(path)