1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
#!/usr/bin/env python
#
# Copyright (c) 2017 grakiss.wanglei@huawei.com and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
#
import docker
import sys
import dovetail.utils.dovetail_logger as dt_logger
import dovetail.utils.dovetail_utils as dt_utils
from dovetail.utils.dovetail_config import DovetailConfig as dt_cfg
class Container(object):
logger = None
def __init__(self, testcase):
self.container = None
self.testcase = testcase
self.valid_type = self.testcase.validate_type()
self.client = docker.from_env(timeout=None)
def __str__(self):
pass
@classmethod
def create_log(cls):
cls.logger = dt_logger.Logger(__name__ + '.Container').getLogger()
def _get_config(self, field, project_cfg, testcase_cfg):
value = dt_utils.get_value_from_dict(field, testcase_cfg)
if not value:
value = dt_utils.get_value_from_dict(field, project_cfg)
if not value:
self.logger.error("Couldn't find key {}.".format(field))
return None
return value
def get_docker_image(self):
project_cfg = dt_cfg.dovetail_config[self.valid_type]
testcase_cfg = self.testcase.testcase['validate']
name = self._get_config('image_name', project_cfg, testcase_cfg)
tag = self._get_config('docker_tag', project_cfg, testcase_cfg)
return '{}:{}'.format(name, tag) if name and tag else None
def create(self, docker_image):
dovetail_config = dt_cfg.dovetail_config
project_cfg = dovetail_config[self.valid_type]
kwargs = dt_utils.get_value_from_dict('opts', project_cfg)
shell = dt_utils.get_value_from_dict('shell', project_cfg)
if not shell:
return None
env_list = dt_utils.get_value_from_dict('envs', project_cfg)
if env_list:
kwargs['environment'] = \
[env for env in env_list if env is not None]
volume_list = dt_utils.get_value_from_dict('volumes', project_cfg)
kwargs['volumes'] = [vol for vol in volume_list if vol is not None]
kwargs['extra_hosts'] = dt_utils.get_hosts_info(self.logger)
try:
self.container = self.client.containers.run(
docker_image, shell, **kwargs)
except (docker.errors.ContainerError, docker.errors.ImageNotFound,
docker.errors.APIError):
return None
return self.container.id
def get_image_id(self, image_name):
try:
image_id = self.client.images.get(image_name).id
except (docker.errors.ImageNotFound, docker.errors.APIError):
image_id = None
return image_id
# remove the image according to the image_id
# if there exists containers using this image, then skip
def remove_image(self, image_id):
try:
containers = self.client.containers.list(
filters={'ancestor': image_id})
except docker.errors.APIError:
containers = []
if containers:
self.logger.debug('Image {} has containers, skip.'
.format(image_id))
return True
self.logger.debug('Remove image {}.'.format(image_id))
try:
self.client.images.remove(image_id)
self.logger.debug('Remove image {} successfully.'.format(image_id))
return True
except (docker.errors.ImageNotFound, docker.errors.APIError):
self.logger.error('Failed to remove image {}.'.format(image_id))
return False
def pull_image_only(self, image_name):
try:
self.client.images.pull(image_name)
self.logger.debug(
'Success to pull docker image {}!'.format(image_name))
return True
except docker.errors.APIError:
self.logger.error(
'Failed to pull docker image {}!'.format(image_name))
return False
def pull_image(self, docker_image):
if not docker_image:
return None
old_image_id = self.get_image_id(docker_image)
if not self.pull_image_only(docker_image):
return None
new_image_id = self.get_image_id(docker_image)
if not new_image_id:
self.logger.error(
'Failed to get the id of image {}.'.format(docker_image))
return None
if not old_image_id:
return docker_image
if new_image_id == old_image_id:
self.logger.debug('Image {} has no changes, no need to remove.'
.format(docker_image))
else:
self.remove_image(old_image_id)
return docker_image
def get_container(self, container_name):
try:
container = self.client.containers.get(container_name)
except (docker.errors.NotFound, docker.errors.APIError):
container = None
return container
def clean(self):
try:
self.container.remove(force=True)
self.logger.debug(
'container: {} was removed'.format(self.container.name))
except docker.errors.APIError as e:
self.logger.error(e)
extra_containers = dt_utils.get_value_from_dict(
'extra_container', dt_cfg.dovetail_config[self.valid_type])
if extra_containers:
for container_name in extra_containers:
container = self.get_container(container_name)
if container:
try:
container.remove(force=True)
self.logger.debug(
'container: {} was removed'.format(container_name))
except docker.errors.APIError as e:
self.logger.error(e)
def exec_cmd(self, sub_cmd, exit_on_error=False):
if not sub_cmd:
return (1, 'sub_cmd is empty')
shell = dt_utils.get_value_from_dict(
'shell', dt_cfg.dovetail_config[self.valid_type])
if not shell:
return (1, 'shell is empty')
cmd = '{} -c "{}"'.format(shell, sub_cmd)
try:
result = self.container.exec_run(cmd)
except docker.errors.APIError as e:
result = (e.response.status_code, str(e))
self.logger.error(e)
if exit_on_error:
sys.exit(1)
return result
def copy_file(self, src_path, dest_path, exit_on_error=False):
if not src_path or not dest_path:
return (1, 'src_path or dest_path is empty')
cmd = 'cp %s %s' % (src_path, dest_path)
return self.exec_cmd(cmd, exit_on_error)
def copy_files_in_container(self):
project_config = dt_cfg.dovetail_config[self.valid_type]
if 'copy_file_in_container' not in project_config.keys():
return
if not project_config['copy_file_in_container']:
return
for item in project_config['copy_file_in_container']:
self.copy_file(item['src_file'], item['dest_file'])
|