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gns3-server/gns3server/modules/docker/__init__.py
2015-09-08 10:54:27 +02:00

138 lines
4.2 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (C) 2015 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Docker server module.
"""
import os
import sys
import shutil
import asyncio
import subprocess
import logging
import docker
log = logging.getLogger(__name__)
from ..base_manager import BaseManager
from ..project_manager import ProjectManager
from .docker_vm import Container
from .docker_error import DockerError
class Docker(BaseManager):
_VM_CLASS = Container
def __init__(self):
super().__init__()
# FIXME: make configurable and start docker before trying
self._server_url = 'unix://var/run/docker.sock'
# FIXME: handle client failure
self._client = docker.Client(base_url=self._server_url)
self._execute_lock = asyncio.Lock()
@property
def server_url(self):
"""Returns the Docker server url.
:returns: url
:rtype: string
"""
return self._server_url
@server_url.setter
def server_url(self, value):
self._server_url = value
# FIXME: handle client failure
self._client = docker.Client(base_url=value)
@asyncio.coroutine
def execute(self, command, kwargs, timeout=60):
command = getattr(self._client, command)
log.debug("Executing Docker with command: {}".format(command))
try:
# FIXME: async wait
result = command(**kwargs)
except Exception as error:
raise DockerError("Docker has returned an error: {}".format(error))
return result
# FIXME: do this in docker
@asyncio.coroutine
def project_closed(self, project):
"""Called when a project is closed.
:param project: Project instance
"""
yield from super().project_closed(project)
hdd_files_to_close = yield from self._find_inaccessible_hdd_files()
for hdd_file in hdd_files_to_close:
log.info("Closing VirtualBox VM disk file {}".format(os.path.basename(hdd_file)))
try:
yield from self.execute("closemedium", ["disk", hdd_file])
except VirtualBoxError as e:
log.warning("Could not close VirtualBox VM disk file {}: {}".format(os.path.basename(hdd_file), e))
continue
@asyncio.coroutine
def list_images(self):
"""Gets Docker image list.
:returns: list of dicts
:rtype: list
"""
images = []
for image in self._client.images():
for tag in image['RepoTags']:
images.append({'imagename': tag})
return images
@asyncio.coroutine
def list_containers(self):
"""Gets Docker container list.
:returns: list of dicts
:rtype: list
"""
return self._client.containers()
def get_container(self, cid, project_id=None):
"""Returns a Docker container.
:param id: Docker container identifier
:param project_id: Project identifier
:returns: Docker container
"""
if project_id:
# check if the project_id exists
project = ProjectManager.instance().get_project(project_id)
if cid not in self._vms:
raise aiohttp.web.HTTPNotFound(
text="Docker container with ID {} doesn't exist".format(vm_id))
container = self._vms[cid]
if project_id:
if container.project.id != project.id:
raise aiohttp.web.HTTPNotFound(
text="Project ID {} doesn't belong to container {}".format(
project_id, container.name))
return container