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
|
from __future__ import absolute_import
from __future__ import unicode_literals
import logging
from docker.errors import NotFound
from .config import ConfigurationError
log = logging.getLogger(__name__)
class Volume(object):
def __init__(self, client, project, name, driver=None, driver_opts=None,
external_name=None, labels=None):
self.client = client
self.project = project
self.name = name
self.driver = driver
self.driver_opts = driver_opts
self.external_name = external_name
self.labels = labels
def create(self):
return self.client.create_volume(
self.full_name, self.driver, self.driver_opts, labels=self.labels
)
def remove(self):
if self.external:
log.info("Volume %s is external, skipping", self.full_name)
return
log.info("Removing volume %s", self.full_name)
return self.client.remove_volume(self.full_name)
def inspect(self):
return self.client.inspect_volume(self.full_name)
def exists(self):
try:
self.inspect()
except NotFound:
return False
return True
@property
def external(self):
return bool(self.external_name)
@property
def full_name(self):
if self.external_name:
return self.external_name
return '{0}_{1}'.format(self.project, self.name)
class ProjectVolumes(object):
def __init__(self, volumes):
self.volumes = volumes
@classmethod
def from_config(cls, name, config_data, client):
config_volumes = config_data.volumes or {}
volumes = {
vol_name: Volume(
client=client,
project=name,
name=vol_name,
driver=data.get('driver'),
driver_opts=data.get('driver_opts'),
external_name=data.get('external_name'),
labels=data.get('labels')
)
for vol_name, data in config_volumes.items()
}
return cls(volumes)
def remove(self):
for volume in self.volumes.values():
try:
volume.remove()
except NotFound:
log.warn("Volume %s not found.", volume.full_name)
def initialize(self):
try:
for volume in self.volumes.values():
volume_exists = volume.exists()
if volume.external:
log.debug(
'Volume {0} declared as external. No new '
'volume will be created.'.format(volume.name)
)
if not volume_exists:
raise ConfigurationError(
'Volume {name} declared as external, but could'
' not be found. Please create the volume manually'
' using `{command}{name}` and try again.'.format(
name=volume.full_name,
command='docker volume create --name='
)
)
continue
if not volume_exists:
log.info(
'Creating volume "{0}" with {1} driver'.format(
volume.full_name, volume.driver or 'default'
)
)
volume.create()
else:
driver = volume.inspect()['Driver']
if volume.driver is not None and driver != volume.driver:
raise ConfigurationError(
'Configuration for volume {0} specifies driver '
'{1}, but a volume with the same name uses a '
'different driver ({3}). If you wish to use the '
'new configuration, please remove the existing '
'volume "{2}" first:\n'
'$ docker volume rm {2}'.format(
volume.name, volume.driver, volume.full_name,
volume.inspect()['Driver']
)
)
except NotFound:
raise ConfigurationError(
'Volume %s specifies nonexistent driver %s' % (volume.name, volume.driver)
)
def namespace_spec(self, volume_spec):
if not volume_spec.is_named_volume:
return volume_spec
volume = self.volumes[volume_spec.external]
return volume_spec._replace(external=volume.full_name)
|
