/usr/lib/python2.7/dist-packages/pylxd/container.py is in python-pylxd 2.0.0~b1-2.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | # Copyright (c) 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import six
from pylxd import mixin
from pylxd.deprecated.container import LXDContainer # NOQA
from pylxd.operation import Operation
class Container(mixin.Waitable, mixin.Marshallable):
"""An LXD Container.
This class is not intended to be used directly, but rather to be used
via `Client.containers.create`.
"""
__slots__ = [
'_client',
'architecture', 'config', 'creation_date', 'devices', 'ephemeral',
'expanded_config', 'expanded_devices', 'name', 'profiles', 'status'
]
@classmethod
def get(cls, client, name):
"""Get a container by name."""
response = client.api.containers[name].get()
if response.status_code == 404:
raise NameError('No container named "{}"'.format(name))
container = cls(_client=client, **response.json()['metadata'])
return container
@classmethod
def all(cls, client):
"""Get all containers.
Containers returned from this method will only have the name
set, as that is the only property returned from LXD. If more
information is needed, `Container.reload` is the method call
that should be used.
"""
response = client.api.containers.get()
containers = []
for url in response.json()['metadata']:
name = url.split('/')[-1]
containers.append(cls(_client=client, name=name))
return containers
@classmethod
def create(cls, client, config, wait=False):
"""Create a new container config."""
response = client.api.containers.post(json=config)
if wait:
Operation.wait_for_operation(client, response.json()['operation'])
return cls(name=config['name'])
def __init__(self, **kwargs):
super(Container, self).__init__()
for key, value in kwargs.iteritems():
setattr(self, key, value)
def reload(self):
"""Reload the container information."""
response = self._client.api.containers[self.name].get()
if response.status_code == 404:
raise NameError(
'Container named "{}" has gone away'.format(self.name))
for key, value in response.json()['metadata'].iteritems():
setattr(self, key, value)
def update(self, wait=False):
"""Update the container in lxd from local changes."""
marshalled = self.marshall()
# These two properties are explicitly not allowed.
del marshalled['name']
del marshalled['status']
response = self._client.api.containers[self.name].put(
json=marshalled)
if wait:
self.wait_for_operation(response.json()['operation'])
def rename(self, name, wait=False):
"""Rename a container."""
response = self._client.api.containers[
self.name].post(json={'name': name})
if wait:
self.wait_for_operation(response.json()['operation'])
self.name = name
def delete(self, wait=False):
"""Delete the container."""
response = self._client.api.containers[self.name].delete()
if wait:
self.wait_for_operation(response.json()['operation'])
def _set_state(self, state, timeout=30, force=True, wait=False):
response = self._client.api.containers[self.name].state.put(json={
'action': state,
'timeout': timeout,
'force': force
})
if wait:
self.wait_for_operation(response.json()['operation'])
self.reload()
def start(self, timeout=30, force=True, wait=False):
"""Start the container."""
return self._set_state(
'start', timeout=timeout, force=force, wait=wait)
def stop(self, timeout=30, force=True, wait=False):
"""Stop the container."""
return self._set_state('stop', timeout=timeout, force=force, wait=wait)
def restart(self, timeout=30, force=True, wait=False):
"""Restart the container."""
return self._set_state('stop', timeout=timeout, force=force, wait=wait)
def freeze(self, timeout=30, force=True, wait=False):
"""Freeze the container."""
return self._set_state('stop', timeout=timeout, force=force, wait=wait)
def unfreeze(self, timeout=30, force=True, wait=False):
"""Unfreeze the container."""
return self._set_state('stop', timeout=timeout, force=force, wait=wait)
def snapshot(self, name, stateful=False, wait=False):
"""Take a snapshot of the container."""
response = self._client.api.containers[self.name].snapshots.post(json={
'name': name, 'stateful': stateful})
if wait:
self.wait_for_operation(response.json()['operation'])
def list_snapshots(self):
"""List all container snapshots."""
response = self._client.api.containers[self.name].snapshots.get()
return [snapshot.split('/')[-1]
for snapshot in response.json()['metadata']]
def rename_snapshot(self, old, new, wait=False):
"""Rename a snapshot."""
response = self._client.api.containers[
self.name].snapshots[old].post(json={
'name': new
})
if wait:
self.wait_for_operation(response.json()['operation'])
def delete_snapshot(self, name, wait=False):
"""Delete a snapshot."""
response = self._client.api.containers[
self.name].snapshots[name].delete()
if wait:
self.wait_for_operation(response.json()['operation'])
def get_file(self, filepath):
"""Get a file from the container."""
response = self._client.api.containers[self.name].files.get(
params={'path': filepath})
if response.status_code == 500:
# XXX: rockstar (15 Feb 2016) - This should really return a 404.
# I blame LXD. :)
raise IOError('Error reading "{}"'.format(filepath))
return response.content
def put_file(self, filepath, data):
"""Put a file on the container."""
response = self._client.api.containers[self.name].files.post(
params={'path': filepath}, data=data)
return response.status_code == 200
def execute(self, commands, environment={}):
"""Execute a command on the container."""
# XXX: rockstar (15 Feb 2016) - This functionality is limited by
# design, for now. It needs to grow the ability to return web sockets
# and perform interactive functions.
if isinstance(commands, six.string_types):
commands = [commands]
response = self._client.api.containers[self.name]['exec'].post(json={
'command': commands,
'environment': environment,
'wait-for-websocket': False,
'interactive': False,
})
operation_id = response.json()['operation']
self.wait_for_operation(operation_id)
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