238 lines
9.7 KiB
Python
238 lines
9.7 KiB
Python
# 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.
|
|
|
|
"""Magnum Docker RPC handler."""
|
|
|
|
from docker import errors
|
|
import functools
|
|
from oslo_config import cfg
|
|
|
|
from magnum.common import docker_utils
|
|
from magnum.common import exception
|
|
from magnum.common import utils
|
|
from magnum.conductor.handlers.common import docker_client
|
|
from magnum import objects
|
|
from magnum.objects import container as obj_container
|
|
from magnum.openstack.common._i18n import _LE
|
|
from magnum.openstack.common import log as logging
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
CONF = cfg.CONF
|
|
|
|
docker_opts = [
|
|
cfg.StrOpt('docker_remote_api_version',
|
|
default=docker_client.DEFAULT_DOCKER_REMOTE_API_VERSION,
|
|
help='Docker remote api version. Override it according to '
|
|
'specific docker api version in your environment.'),
|
|
cfg.IntOpt('default_timeout',
|
|
default=docker_client.DEFAULT_DOCKER_TIMEOUT,
|
|
help='Default timeout in seconds for docker client '
|
|
'operations.'),
|
|
cfg.BoolOpt('api_insecure',
|
|
default=False,
|
|
help='If set, ignore any SSL validation issues'),
|
|
cfg.StrOpt('ca_file',
|
|
help='Location of CA certificates file for '
|
|
'securing docker api requests (tlscacert).'),
|
|
cfg.StrOpt('cert_file',
|
|
help='Location of TLS certificate file for '
|
|
'securing docker api requests (tlscert).'),
|
|
cfg.StrOpt('key_file',
|
|
help='Location of TLS private key file for '
|
|
'securing docker api requests (tlskey).'),
|
|
]
|
|
|
|
CONF.register_opts(docker_opts, 'docker')
|
|
|
|
|
|
def wrap_container_exception(f):
|
|
def wrapped(self, context, *args, **kwargs):
|
|
try:
|
|
return f(self, context, *args, **kwargs)
|
|
except Exception as e:
|
|
container_uuid = kwargs.get('container_uuid')
|
|
if container_uuid is not None:
|
|
LOG.exception(_LE("Error while connect to docker "
|
|
"container %(name)s: %(error)s"),
|
|
{'name': container_uuid,
|
|
'error': str(e)})
|
|
raise exception.ContainerException(
|
|
"Docker internal Error: %s" % str(e))
|
|
return functools.wraps(f)(wrapped)
|
|
|
|
|
|
class Handler(object):
|
|
|
|
def __init__(self):
|
|
super(Handler, self).__init__()
|
|
|
|
@staticmethod
|
|
def _find_container_by_name(docker, name):
|
|
try:
|
|
for info in docker.list_instances(inspect=True):
|
|
if info['Config'].get('Hostname') == name:
|
|
return info
|
|
except errors.APIError as e:
|
|
if e.response.status_code != 404:
|
|
raise
|
|
return {}
|
|
|
|
def _encode_utf8(self, value):
|
|
return unicode(value).encode('utf-8')
|
|
|
|
@staticmethod
|
|
def _docker_for_bay(bay):
|
|
tcp_url = 'tcp://%s:2376' % bay.api_address
|
|
return docker_client.DockerHTTPClient(
|
|
tcp_url,
|
|
CONF.docker.docker_remote_api_version,
|
|
CONF.docker.default_timeout
|
|
)
|
|
|
|
@classmethod
|
|
def _docker_for_container(cls, context, container):
|
|
bay = objects.Bay.get_by_uuid(context, container.bay_uuid)
|
|
return cls._docker_for_bay(bay)
|
|
|
|
@classmethod
|
|
def get_docker_client(cls, context, container):
|
|
if utils.is_uuid_like(container):
|
|
container = objects.Container.get_by_uuid(context, container)
|
|
return cls._docker_for_container(context, container)
|
|
|
|
# Container operations
|
|
|
|
@wrap_container_exception
|
|
def container_create(self, context, name, container_uuid, container):
|
|
docker = self.get_docker_client(context, container)
|
|
image_id = container.image_id
|
|
LOG.debug('Creating container with image %s name %s'
|
|
% (image_id, name))
|
|
try:
|
|
image_repo, image_tag = docker_utils.parse_docker_image(image_id)
|
|
docker.pull(image_repo, tag=image_tag)
|
|
docker.inspect_image(self._encode_utf8(container.image_id))
|
|
docker.create_container(image_id, name=name,
|
|
hostname=container_uuid,
|
|
command=container.command)
|
|
container.status = obj_container.STOPPED
|
|
return container
|
|
except errors.APIError as api_error:
|
|
container.status = obj_container.ERROR
|
|
raise exception.ContainerException(
|
|
"Docker API Error : %s" % str(api_error))
|
|
finally:
|
|
container.save()
|
|
|
|
@wrap_container_exception
|
|
def container_delete(self, context, container_uuid):
|
|
LOG.debug("container_delete %s" % container_uuid)
|
|
docker = self.get_docker_client(context, container_uuid)
|
|
try:
|
|
docker_id = self._find_container_by_name(docker, container_uuid)
|
|
if not docker_id:
|
|
return None
|
|
return docker.remove_container(docker_id)
|
|
except errors.APIError as api_error:
|
|
raise exception.ContainerException(
|
|
"Docker API Error : %s" % str(api_error))
|
|
|
|
@wrap_container_exception
|
|
def container_show(self, context, container_uuid):
|
|
LOG.debug("container_show %s" % container_uuid)
|
|
docker = self.get_docker_client(context, container_uuid)
|
|
container = objects.Container.get_by_uuid(context, container_uuid)
|
|
try:
|
|
docker_id = self._find_container_by_name(docker, container_uuid)
|
|
result = docker.inspect_container(docker_id)
|
|
status = result.get('State')
|
|
if status:
|
|
if status.get('Error') is True:
|
|
container.status = obj_container.ERROR
|
|
elif status.get('Running'):
|
|
container.status = obj_container.RUNNING
|
|
elif status.get('Paused'):
|
|
container.status = obj_container.PAUSED
|
|
else:
|
|
container.status = obj_container.STOPPED
|
|
container.save()
|
|
return container
|
|
except errors.APIError as api_error:
|
|
error_message = str(api_error)
|
|
if '404' in error_message:
|
|
container.status = obj_container.ERROR
|
|
container.save()
|
|
return container
|
|
raise exception.ContainerException(
|
|
"Docker API Error : %s" % (error_message))
|
|
|
|
@wrap_container_exception
|
|
def _container_action(self, context, container_uuid, status, docker_func):
|
|
LOG.debug("container_%s %s" % (status, container_uuid))
|
|
docker = self.get_docker_client(context, container_uuid)
|
|
try:
|
|
docker_id = self._find_container_by_name(docker, container_uuid)
|
|
result = getattr(docker, docker_func)(docker_id)
|
|
container = objects.Container.get_by_uuid(context, container_uuid)
|
|
container.status = status
|
|
container.save()
|
|
return result
|
|
except errors.APIError as api_error:
|
|
raise exception.ContainerException(
|
|
"Docker API Error : %s" % str(api_error))
|
|
|
|
def container_reboot(self, context, container_uuid):
|
|
return self._container_action(context, container_uuid,
|
|
obj_container.RUNNING, 'restart')
|
|
|
|
def container_stop(self, context, container_uuid):
|
|
return self._container_action(context, container_uuid,
|
|
obj_container.STOPPED, 'stop')
|
|
|
|
def container_start(self, context, container_uuid):
|
|
return self._container_action(context, container_uuid,
|
|
obj_container.RUNNING, 'start')
|
|
|
|
def container_pause(self, context, container_uuid):
|
|
return self._container_action(context, container_uuid,
|
|
obj_container.PAUSED, 'pause')
|
|
|
|
def container_unpause(self, context, container_uuid):
|
|
return self._container_action(context, container_uuid,
|
|
obj_container.RUNNING, 'unpause')
|
|
|
|
@wrap_container_exception
|
|
def container_logs(self, context, container_uuid):
|
|
LOG.debug("container_logs %s" % container_uuid)
|
|
docker = self.get_docker_client(context, container_uuid)
|
|
try:
|
|
docker_id = self._find_container_by_name(docker, container_uuid)
|
|
return {'output': docker.get_container_logs(docker_id)}
|
|
except errors.APIError as api_error:
|
|
raise exception.ContainerException(
|
|
"Docker API Error : %s" % str(api_error))
|
|
|
|
@wrap_container_exception
|
|
def container_execute(self, context, container_uuid, command):
|
|
LOG.debug("container_execute %s command %s" %
|
|
(container_uuid, command))
|
|
docker = self.get_docker_client(context, container_uuid)
|
|
try:
|
|
docker_id = self._find_container_by_name(docker, container_uuid)
|
|
create_res = docker.exec_create(docker_id, command, True,
|
|
True, False)
|
|
return {'output': docker.exec_start(create_res, False,
|
|
False, False)}
|
|
except errors.APIError as api_error:
|
|
raise exception.ContainerException(
|
|
"Docker API Error : %s" % str(api_error))
|