1#!/usr/bin/env python
2#
3# internal use only for CI
4# get latest MR information by source branch
5#
6# Copyright 2020 Espressif Systems (Shanghai) PTE LTD
7#
8# Licensed under the Apache License, Version 2.0 (the "License");
9# you may not use this file except in compliance with the License.
10# You may obtain a copy of the License at
11#
12#     http://www.apache.org/licenses/LICENSE-2.0
13#
14# Unless required by applicable law or agreed to in writing, software
15# distributed under the License is distributed on an "AS IS" BASIS,
16# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17# See the License for the specific language governing permissions and
18# limitations under the License.
19#
20
21import argparse
22import os
23import subprocess
24
25from gitlab_api import Gitlab
26
27try:
28    from typing import Any, Union
29except ImportError:
30    # Only used for type annotations
31    pass
32
33
34def _get_mr_obj(source_branch):  # type: (str) -> Union[Gitlab, None]
35    if not source_branch:
36        return None
37    gl = Gitlab(os.getenv('CI_PROJECT_ID', 'espressif/esp-idf'))
38    if not gl.project:
39        return None
40    mrs = gl.project.mergerequests.list(state='opened', source_branch=source_branch)
41    if mrs:
42        return mrs[0]  # one source branch can only have one opened MR at one moment
43    else:
44        return None
45
46
47def get_mr_iid(source_branch):  # type: (str) -> str
48    mr = _get_mr_obj(source_branch)
49    if not mr:
50        return ''
51    else:
52        return str(mr.iid)
53
54
55def get_mr_changed_files(source_branch):  # type: (str) -> Any
56    mr = _get_mr_obj(source_branch)
57    if not mr:
58        return ''
59
60    return subprocess.check_output(['git', 'diff', '--name-only',
61                                    'origin/{}...origin/{}'.format(mr.target_branch, source_branch)]).decode('utf8')
62
63
64def get_mr_commits(source_branch):  # type: (str) -> str
65    mr = _get_mr_obj(source_branch)
66    if not mr:
67        return ''
68    return '\n'.join([commit.id for commit in mr.commits()])
69
70
71if __name__ == '__main__':
72    parser = argparse.ArgumentParser(description='Get the latest merge request info by pipeline')
73    actions = parser.add_subparsers(dest='action', help='info type')
74
75    common_args = argparse.ArgumentParser(add_help=False)
76    common_args.add_argument('src_branch', nargs='?', help='source branch')
77
78    actions.add_parser('id', parents=[common_args])
79    actions.add_parser('files', parents=[common_args])
80    actions.add_parser('commits', parents=[common_args])
81
82    args = parser.parse_args()
83
84    if args.action == 'id':
85        print(get_mr_iid(args.src_branch))
86    elif args.action == 'files':
87        print(get_mr_changed_files(args.src_branch))
88    elif args.action == 'commits':
89        print(get_mr_commits(args.src_branch))
90    else:
91        raise NotImplementedError('not possible to get here')
92