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gns3-server
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Install Docker resources in writable location

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pull/2326/head
grossmj 6 months ago
parent 303cbf3642
commit 09ff807055
5 changed files with 68 additions and 36 deletions
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33
gns3server/compute/docker/__init__.py
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@ -25,7 +25,7 @@ import asyncio
import logging
import aiohttp
import shutil
import subprocess
import platformdirs
from gns3server.utils import parse_version
from gns3server.utils.asyncio import locking
@ -59,11 +59,9 @@ class Docker(BaseManager):
self._api_version = DOCKER_MINIMUM_API_VERSION
@staticmethod
async def install_busybox():
async def install_busybox(dst_dir):
if not sys.platform.startswith("linux"):
return
dst_busybox = os.path.join(os.path.dirname(os.path.abspath(__file__)), "resources", "bin", "busybox")
dst_busybox = os.path.join(dst_dir, "bin", "busybox")
if os.path.isfile(dst_busybox):
return
for busybox_exec in ("busybox-static", "busybox.static", "busybox"):
@ -91,6 +89,31 @@ class Docker(BaseManager):
raise DockerError(f"Could not install busybox: {e}")
raise DockerError("No busybox executable could be found")
@staticmethod
def resources_path():
"""
Get the Docker resources storage directory
"""
appname = vendor = "GNS3"
docker_resources_dir = os.path.join(platformdirs.user_data_dir(appname, vendor, roaming=True), "docker", "resources")
os.makedirs(docker_resources_dir, exist_ok=True)
return docker_resources_dir
async def install_resources(self):
"""
Copy the necessary resources to a writable location and install busybox
"""
try:
dst_path = self.resources_path()
log.info(f"Installing Docker resources in '{dst_path}'")
from gns3server.controller import Controller
Controller.instance().install_resource_files(dst_path, "compute/docker/resources")
await self.install_busybox(dst_path)
except OSError as e:
raise DockerError(f"Could not install Docker resources to {dst_path}: {e}")
async def _check_connection(self):
if not self._connected:

16
gns3server/compute/docker/docker_vm.py
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@ -299,12 +299,15 @@ class DockerVM(BaseNode):
:returns: Return the path that we need to map to local folders
"""
resources = get_resource("compute/docker/resources")
if not os.path.exists(resources):
raise DockerError(f"{resources} is missing, can't start Docker container")
try:
resources_path = self.manager.resources_path()
except OSError as e:
raise DockerError(f"Cannot access resources: {e}")
log.info(f'Mount resources from "{resources_path}"')
binds = [{
"Type": "bind",
"Source": resources,
"Source": resources_path,
"Target": "/gns3",
"ReadOnly": True
}]
@ -394,6 +397,8 @@ class DockerVM(BaseNode):
if ":" in os.path.splitdrive(self.working_dir)[1]:
raise DockerError("Cannot create a Docker container with a project directory containing a colon character (':')")
#await self.manager.install_resources()
try:
image_infos = await self._get_image_information()
except DockerHttp404Error:
@ -545,8 +550,7 @@ class DockerVM(BaseNode):
Starts this Docker container.
"""
# make sure busybox is installed
await self.manager.install_busybox()
await self.manager.install_resources()
try:
state = await self._get_container_state()

9
gns3server/controller/__init__.py
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@ -317,9 +317,12 @@ class Controller:
else:
for entry in importlib_resources.files('gns3server').joinpath(resource_name).iterdir():
full_path = os.path.join(dst_path, entry.name)
if entry.is_file() and not os.path.exists(full_path):
log.debug(f'Installing {resource_name} resource file "{entry.name}" to "{full_path}"')
shutil.copy(str(entry), os.path.join(dst_path, entry.name))
if not os.path.exists(full_path):
if entry.is_file():
log.debug(f'Installing {resource_name} resource file "{entry.name}" to "{full_path}"')
shutil.copy(str(entry), os.path.join(dst_path, entry.name))
elif entry.is_dir():
os.makedirs(full_path, exist_ok=True)
def _install_base_configs(self):
"""

9
tests/compute/docker/test_docker.py
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@ -223,7 +223,8 @@ async def test_install_busybox():
with patch("gns3server.compute.docker.shutil.which", return_value="/usr/bin/busybox"):
with asyncio_patch("gns3server.compute.docker.asyncio.create_subprocess_exec", return_value=mock_process) as create_subprocess_mock:
with patch("gns3server.compute.docker.shutil.copy2") as copy2_mock:
await Docker.install_busybox()
dst_dir = Docker.resources_path()
await Docker.install_busybox(dst_dir)
create_subprocess_mock.assert_called_with(
"ldd",
"/usr/bin/busybox",
@ -244,7 +245,8 @@ async def test_install_busybox_dynamic_linked():
with patch("gns3server.compute.docker.shutil.which", return_value="/usr/bin/busybox"):
with asyncio_patch("gns3server.compute.docker.asyncio.create_subprocess_exec", return_value=mock_process):
with pytest.raises(DockerError) as e:
await Docker.install_busybox()
dst_dir = Docker.resources_path()
await Docker.install_busybox(dst_dir)
assert str(e.value) == "No busybox executable could be found"
@ -254,5 +256,6 @@ async def test_install_busybox_no_executables():
with patch("gns3server.compute.docker.os.path.isfile", return_value=False):
with patch("gns3server.compute.docker.shutil.which", return_value=None):
with pytest.raises(DockerError) as e:
await Docker.install_busybox()
dst_dir = Docker.resources_path()
await Docker.install_busybox(dst_dir)
assert str(e.value) == "No busybox executable could be found"

37
tests/compute/docker/test_docker_vm.py
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@ -29,7 +29,6 @@ from gns3server.compute.ubridge.ubridge_error import UbridgeNamespaceError
from gns3server.compute.docker.docker_vm import DockerVM
from gns3server.compute.docker.docker_error import DockerError, DockerHttp404Error
from gns3server.compute.docker import Docker
from gns3server.utils.get_resource import get_resource
from unittest.mock import patch, MagicMock, call
@ -108,7 +107,7 @@ async def test_create(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -158,7 +157,7 @@ async def test_create_with_tag(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -211,7 +210,7 @@ async def test_create_vnc(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -362,7 +361,7 @@ async def test_create_start_cmd(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -474,7 +473,7 @@ async def test_create_image_not_available(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -529,7 +528,7 @@ async def test_create_with_user(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -627,7 +626,7 @@ async def test_create_with_extra_volumes_duplicate_1_image(compute_project, mana
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -682,7 +681,7 @@ async def test_create_with_extra_volumes_duplicate_2_user(compute_project, manag
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -737,7 +736,7 @@ async def test_create_with_extra_volumes_duplicate_3_subdir(compute_project, man
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -792,7 +791,7 @@ async def test_create_with_extra_volumes_duplicate_4_backslash(compute_project,
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -847,7 +846,7 @@ async def test_create_with_extra_volumes_duplicate_5_subdir_issue_1595(compute_p
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -897,7 +896,7 @@ async def test_create_with_extra_volumes_duplicate_6_subdir_issue_1595(compute_p
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -953,7 +952,7 @@ async def test_create_with_extra_volumes(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -1213,7 +1212,7 @@ async def test_update(vm):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -1294,7 +1293,7 @@ async def test_update_running(vm):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -1583,7 +1582,7 @@ async def test_mount_binds(vm):
assert vm._mount_binds(image_infos) == [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -1727,7 +1726,7 @@ async def test_cpus(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},
@ -1777,7 +1776,7 @@ async def test_memory(compute_project, manager):
"Mounts": [
{
"Type": "bind",
"Source": get_resource("compute/docker/resources"),
"Source": Docker.resources_path(),
"Target": "/gns3",
"ReadOnly": True
},

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