mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-18 14:28:08 +00:00
777 lines
29 KiB
Python
777 lines
29 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 container instance.
|
||
"""
|
||
|
||
import asyncio
|
||
import shutil
|
||
import psutil
|
||
import shlex
|
||
import aiohttp
|
||
import json
|
||
import os
|
||
|
||
from ...ubridge.hypervisor import Hypervisor
|
||
from .docker_error import *
|
||
from ..base_vm import BaseVM
|
||
from ..adapters.ethernet_adapter import EthernetAdapter
|
||
from ..nios.nio_udp import NIOUDP
|
||
from ...utils.asyncio.telnet_server import AsyncioTelnetServer
|
||
from ...utils.asyncio import wait_for_file_creation
|
||
from ...utils.get_resource import get_resource
|
||
from ...ubridge.ubridge_error import UbridgeError, UbridgeNamespaceError
|
||
|
||
|
||
import logging
|
||
log = logging.getLogger(__name__)
|
||
|
||
|
||
class DockerVM(BaseVM):
|
||
"""Docker container implementation.
|
||
|
||
:param name: Docker container name
|
||
:param vm_id: Docker VM identifier
|
||
:param project: Project instance
|
||
:param manager: Manager instance
|
||
:param image: Docker image
|
||
:param console: TCP console port
|
||
:param console_type: Console type
|
||
:param aux: TCP aux console port
|
||
"""
|
||
|
||
def __init__(self, name, vm_id, project, manager, image,
|
||
console=None, aux=None, start_command=None,
|
||
adapters=None, environment=None, console_type="telnet"):
|
||
super().__init__(name, vm_id, project, manager, console=console, aux=aux, allocate_aux=True, console_type=console_type)
|
||
|
||
self._image = image
|
||
self._start_command = start_command
|
||
self._environment = environment
|
||
self._cid = None
|
||
self._ethernet_adapters = []
|
||
self._ubridge_hypervisor = None
|
||
self._temporary_directory = None
|
||
self._telnet_servers = []
|
||
self._x11vnc_process = None
|
||
|
||
if adapters is None:
|
||
self.adapters = 1
|
||
else:
|
||
self.adapters = adapters
|
||
|
||
log.debug(
|
||
"{module}: {name} [{image}] initialized.".format(
|
||
module=self.manager.module_name,
|
||
name=self.name,
|
||
image=self._image))
|
||
|
||
def __json__(self):
|
||
return {
|
||
"name": self._name,
|
||
"vm_id": self._id,
|
||
"container_id": self._cid,
|
||
"project_id": self._project.id,
|
||
"image": self._image,
|
||
"adapters": self.adapters,
|
||
"console": self.console,
|
||
"console_type": self.console_type,
|
||
"aux": self.aux,
|
||
"start_command": self.start_command,
|
||
"environment": self.environment,
|
||
"vm_directory": self.working_dir
|
||
}
|
||
|
||
def _get_free_display_port(self):
|
||
"""
|
||
Search a free display port
|
||
"""
|
||
display = 100
|
||
if not os.path.exists("/tmp/.X11-unix/"):
|
||
return display
|
||
while True:
|
||
if not os.path.exists("/tmp/.X11-unix/X{}".format(display)):
|
||
return display
|
||
display += 1
|
||
|
||
@property
|
||
def start_command(self):
|
||
return self._start_command
|
||
|
||
@start_command.setter
|
||
def start_command(self, command):
|
||
command = command.strip()
|
||
if len(command) == 0:
|
||
self._start_command = None
|
||
else:
|
||
self._start_command = command
|
||
|
||
@property
|
||
def environment(self):
|
||
return self._environment
|
||
|
||
@environment.setter
|
||
def environment(self, command):
|
||
self._environment = command
|
||
|
||
@asyncio.coroutine
|
||
def _get_container_state(self):
|
||
"""Returns the container state (e.g. running, paused etc.)
|
||
|
||
:returns: state
|
||
:rtype: str
|
||
"""
|
||
result = yield from self.manager.query("GET", "containers/{}/json".format(self._cid))
|
||
|
||
if result["State"]["Paused"]:
|
||
return "paused"
|
||
if result["State"]["Running"]:
|
||
return "running"
|
||
return "exited"
|
||
|
||
@asyncio.coroutine
|
||
def _get_image_informations(self):
|
||
"""
|
||
:returns: Dictionnary informations about the container image
|
||
"""
|
||
result = yield from self.manager.query("GET", "images/{}/json".format(self._image))
|
||
return result
|
||
|
||
def _mount_binds(self, image_infos):
|
||
"""
|
||
:returns: Return the path that we need to map to local folders
|
||
"""
|
||
binds = []
|
||
|
||
binds.append("{}:/gns3:ro".format(get_resource("modules/docker/resources")))
|
||
|
||
# We mount our own etc/network
|
||
network_config = self._create_network_config()
|
||
binds.append("{}:/etc/network:rw".format(network_config))
|
||
|
||
volumes = image_infos.get("ContainerConfig", {}).get("Volumes")
|
||
if volumes is None:
|
||
return binds
|
||
for volume in volumes.keys():
|
||
source = os.path.join(self.working_dir, os.path.relpath(volume, "/"))
|
||
os.makedirs(source, exist_ok=True)
|
||
binds.append("{}:{}".format(source, volume))
|
||
|
||
return binds
|
||
|
||
def _create_network_config(self):
|
||
"""
|
||
If network config is empty we create a sample config
|
||
"""
|
||
path = os.path.join(self.working_dir, "etc", "network")
|
||
os.makedirs(path, exist_ok=True)
|
||
os.makedirs(os.path.join(path, "if-up.d"), exist_ok=True)
|
||
os.makedirs(os.path.join(path, "if-down.d"), exist_ok=True)
|
||
os.makedirs(os.path.join(path, "if-pre-up.d"), exist_ok=True)
|
||
os.makedirs(os.path.join(path, "if-post-down.d"), exist_ok=True)
|
||
|
||
if not os.path.exists(os.path.join(path, "interfaces")):
|
||
with open(os.path.join(path, "interfaces"), "w+") as f:
|
||
f.write("""#
|
||
# This is a sample network config uncomment lines to configure the network
|
||
#
|
||
|
||
""")
|
||
for adapter in range(0, self.adapters):
|
||
f.write("""
|
||
# Static config for eth{adapter}
|
||
#auto eth{adapter}
|
||
#iface eth{adapter} inet static
|
||
#\taddress 192.168.{adapter}.2
|
||
#\tnetmask 255.255.255.0
|
||
#\tgateway 192.168.{adapter}.1
|
||
#\tup echo nameserver 192.168.{adapter}.1 > /etc/resolv.conf
|
||
|
||
# DHCP config for eth{adapter}
|
||
# auto eth{adapter}
|
||
# iface eth{adapter} inet dhcp""".format(adapter=adapter))
|
||
return path
|
||
|
||
@asyncio.coroutine
|
||
def create(self):
|
||
"""Creates the Docker container."""
|
||
|
||
try:
|
||
image_infos = yield from self._get_image_informations()
|
||
except DockerHttp404Error:
|
||
log.info("Image %s is missing pulling it from docker hub", self._image)
|
||
yield from self.pull_image(self._image)
|
||
image_infos = yield from self._get_image_informations()
|
||
|
||
params = {
|
||
"Hostname": self._name,
|
||
"Name": self._name,
|
||
"Image": self._image,
|
||
"NetworkDisabled": True,
|
||
"Tty": True,
|
||
"OpenStdin": True,
|
||
"StdinOnce": False,
|
||
"HostConfig": {
|
||
"CapAdd": ["ALL"],
|
||
"Privileged": True,
|
||
"Binds": self._mount_binds(image_infos)
|
||
},
|
||
"Volumes": {},
|
||
"Env": [],
|
||
"Cmd": [],
|
||
"Entrypoint": image_infos.get("Config", {"Entrypoint": []})["Entrypoint"]
|
||
}
|
||
|
||
if params["Entrypoint"] is None:
|
||
params["Entrypoint"] = []
|
||
if self._start_command:
|
||
params["Cmd"] = shlex.split(self._start_command)
|
||
if len(params["Cmd"]) == 0:
|
||
params["Cmd"] = image_infos.get("Config", {"Cmd": []})["Cmd"]
|
||
if params["Cmd"] is None:
|
||
params["Cmd"] = []
|
||
if len(params["Cmd"]) == 0 and len(params["Entrypoint"]) == 0:
|
||
params["Cmd"] = ["/bin/sh"]
|
||
params["Entrypoint"].insert(0, "/gns3/init.sh")
|
||
|
||
if self._environment:
|
||
params["Env"] += [e.strip() for e in self._environment.split("\n")]
|
||
|
||
if self._console_type == "vnc":
|
||
yield from self._start_vnc()
|
||
params["Env"].append("DISPLAY=:{}".format(self._display))
|
||
params["HostConfig"]["Binds"].append("/tmp/.X11-unix/:/tmp/.X11-unix/")
|
||
|
||
result = yield from self.manager.query("POST", "containers/create", data=params)
|
||
self._cid = result['Id']
|
||
log.info("Docker container '{name}' [{id}] created".format(
|
||
name=self._name, id=self._id))
|
||
return True
|
||
|
||
@asyncio.coroutine
|
||
def update(self):
|
||
"""
|
||
Destroy an recreate the container with the new settings
|
||
"""
|
||
# We need to save the console and state and restore it
|
||
console = self.console
|
||
aux = self.aux
|
||
state = yield from self._get_container_state()
|
||
|
||
yield from self.close()
|
||
yield from self.create()
|
||
self.console = console
|
||
self.aux = aux
|
||
if state == "running":
|
||
yield from self.start()
|
||
|
||
@asyncio.coroutine
|
||
def start(self):
|
||
"""Starts this Docker container."""
|
||
|
||
state = yield from self._get_container_state()
|
||
if state == "paused":
|
||
yield from self.unpause()
|
||
else:
|
||
result = yield from self.manager.query("POST", "containers/{}/start".format(self._cid))
|
||
|
||
namespace = yield from self._get_namespace()
|
||
|
||
yield from self._start_ubridge()
|
||
|
||
for adapter_number in range(0, self.adapters):
|
||
nio = self._ethernet_adapters[adapter_number].get_nio(0)
|
||
with (yield from self.manager.ubridge_lock):
|
||
try:
|
||
yield from self._add_ubridge_connection(nio, adapter_number, namespace)
|
||
except UbridgeNamespaceError:
|
||
yield from self.stop()
|
||
|
||
# The container can crash soon after the start this mean we can not move the interface to the container namespace
|
||
logdata = yield from self._get_log()
|
||
for line in logdata.split('\n'):
|
||
log.error(line)
|
||
raise DockerError(logdata)
|
||
|
||
if self.console_type == "telnet":
|
||
yield from self._start_console()
|
||
|
||
if self.allocate_aux:
|
||
yield from self._start_aux()
|
||
|
||
self.status = "started"
|
||
log.info("Docker container '{name}' [{image}] started listen for {console_type} on {console}".format(name=self._name, image=self._image, console=self.console, console_type=self.console_type))
|
||
|
||
@asyncio.coroutine
|
||
def _start_aux(self):
|
||
"""
|
||
Start an auxilary console
|
||
"""
|
||
|
||
# We can not use the API because docker doesn't expose a websocket api for exec
|
||
# https://github.com/GNS3/gns3-gui/issues/1039
|
||
process = yield from asyncio.subprocess.create_subprocess_exec(
|
||
"docker", "exec", "-i", self._cid, "/gns3/bin/busybox", "sh", "-i",
|
||
stdout=asyncio.subprocess.PIPE,
|
||
stderr=asyncio.subprocess.STDOUT,
|
||
stdin=asyncio.subprocess.PIPE)
|
||
server = AsyncioTelnetServer(reader=process.stdout, writer=process.stdin, binary=False, echo=False)
|
||
self._telnet_servers.append((yield from asyncio.start_server(server.run, self._manager.port_manager.console_host, self.aux)))
|
||
log.debug("Docker container '%s' started listen for auxilary telnet on %d", self.name, self.aux)
|
||
|
||
@asyncio.coroutine
|
||
def _start_vnc(self):
|
||
"""
|
||
Start a VNC server for this container
|
||
"""
|
||
|
||
self._display = self._get_free_display_port()
|
||
if shutil.which("Xvfb") is None or shutil.which("x11vnc") is None:
|
||
raise DockerError("Please install Xvfb and x11vnc before using the VNC support")
|
||
self._xvfb_process = yield from asyncio.create_subprocess_exec("Xvfb", "-nolisten", "tcp", ":{}".format(self._display), "-screen", "0", "1024x768x16")
|
||
self._x11vnc_process = yield from asyncio.create_subprocess_exec("x11vnc", "-forever", "-nopw", "-display", "WAIT:{}".format(self._display), "-rfbport", str(self.console), "-noncache", "-listen", self._manager.port_manager.console_host)
|
||
|
||
x11_socket = os.path.join("/tmp/.X11-unix/", "X{}".format(self._display))
|
||
yield from wait_for_file_creation(x11_socket)
|
||
|
||
@asyncio.coroutine
|
||
def _start_console(self):
|
||
"""
|
||
Start streaming the console via telnet
|
||
"""
|
||
class InputStream:
|
||
|
||
def __init__(self):
|
||
self._data = b""
|
||
|
||
def write(self, data):
|
||
self._data += data
|
||
|
||
@asyncio.coroutine
|
||
def drain(self):
|
||
if not self.ws.closed:
|
||
self.ws.send_bytes(self._data)
|
||
self._data = b""
|
||
|
||
output_stream = asyncio.StreamReader()
|
||
input_stream = InputStream()
|
||
|
||
telnet = AsyncioTelnetServer(reader=output_stream, writer=input_stream, echo=True)
|
||
self._telnet_servers.append((yield from asyncio.start_server(telnet.run, self._manager.port_manager.console_host, self.console)))
|
||
|
||
ws = yield from self.manager.websocket_query("containers/{}/attach/ws?stream=1&stdin=1&stdout=1&stderr=1".format(self._cid))
|
||
input_stream.ws = ws
|
||
|
||
output_stream.feed_data(self.name.encode() + b" console is now available... Press RETURN to get started.\r\n")
|
||
|
||
asyncio.async(self._read_console_output(ws, output_stream))
|
||
|
||
@asyncio.coroutine
|
||
def _read_console_output(self, ws, out):
|
||
"""
|
||
Read websocket and forward it to the telnet
|
||
:params ws: Websocket connection
|
||
:param out: Output stream
|
||
"""
|
||
|
||
while True:
|
||
msg = yield from ws.receive()
|
||
if msg.tp == aiohttp.MsgType.text:
|
||
out.feed_data(msg.data.encode())
|
||
else:
|
||
out.feed_eof()
|
||
ws.close()
|
||
break
|
||
|
||
def is_running(self):
|
||
"""Checks if the container is running.
|
||
|
||
:returns: True or False
|
||
:rtype: bool
|
||
"""
|
||
state = yield from self._get_container_state()
|
||
if state == "running":
|
||
return True
|
||
return False
|
||
|
||
@asyncio.coroutine
|
||
def restart(self):
|
||
"""Restart this Docker container."""
|
||
yield from self.manager.query("POST", "containers/{}/restart".format(self._cid))
|
||
log.info("Docker container '{name}' [{image}] restarted".format(
|
||
name=self._name, image=self._image))
|
||
|
||
@asyncio.coroutine
|
||
def stop(self):
|
||
"""Stops this Docker container."""
|
||
|
||
try:
|
||
if len(self._telnet_servers) > 0:
|
||
for telnet_server in self._telnet_servers:
|
||
telnet_server.close()
|
||
yield from telnet_server.wait_closed()
|
||
self._telnet_servers = []
|
||
|
||
if self._ubridge_hypervisor and self._ubridge_hypervisor.is_running():
|
||
yield from self._ubridge_hypervisor.stop()
|
||
|
||
state = yield from self._get_container_state()
|
||
if state == "paused":
|
||
yield from self.unpause()
|
||
|
||
# t=5 number of seconds to wait before killing the container
|
||
try:
|
||
yield from self.manager.query("POST", "containers/{}/stop".format(self._cid), params={"t": 5})
|
||
log.info("Docker container '{name}' [{image}] stopped".format(
|
||
name=self._name, image=self._image))
|
||
except DockerHttp304Error:
|
||
# Container is already stopped
|
||
pass
|
||
# Ignore runtime error because when closing the server
|
||
except RuntimeError as e:
|
||
log.debug("Docker runtime error when closing: {}".format(str(e)))
|
||
return
|
||
|
||
@asyncio.coroutine
|
||
def pause(self):
|
||
"""Pauses this Docker container."""
|
||
yield from self.manager.query("POST", "containers/{}/pause".format(self._cid))
|
||
log.info("Docker container '{name}' [{image}] paused".format(
|
||
name=self._name, image=self._image))
|
||
self.status = "paused"
|
||
|
||
@asyncio.coroutine
|
||
def unpause(self):
|
||
"""Unpauses this Docker container."""
|
||
yield from self.manager.query("POST", "containers/{}/unpause".format(self._cid))
|
||
log.info("Docker container '{name}' [{image}] unpaused".format(
|
||
name=self._name, image=self._image))
|
||
self.status = "started"
|
||
|
||
@asyncio.coroutine
|
||
def close(self):
|
||
"""Closes this Docker container."""
|
||
|
||
if not (yield from super().close()):
|
||
return False
|
||
|
||
try:
|
||
if self.console_type == "vnc":
|
||
if self._x11vnc_process:
|
||
self._x11vnc_process.terminate()
|
||
self._xvfb_process.terminate()
|
||
yield from self._x11vnc_process.wait()
|
||
yield from self._xvfb_process.wait()
|
||
|
||
state = yield from self._get_container_state()
|
||
if state == "paused" or state == "running":
|
||
yield from self.stop()
|
||
yield from self.manager.query("DELETE", "containers/{}".format(self._cid), params={"force": 1})
|
||
log.info("Docker container '{name}' [{image}] removed".format(
|
||
name=self._name, image=self._image))
|
||
|
||
for adapter in self._ethernet_adapters:
|
||
if adapter is not None:
|
||
for nio in adapter.ports.values():
|
||
if nio and isinstance(nio, NIOUDP):
|
||
self.manager.port_manager.release_udp_port(nio.lport, self._project)
|
||
# Ignore runtime error because when closing the server
|
||
except (DockerHttp404Error, RuntimeError) as e:
|
||
log.debug("Docker error when closing: {}".format(str(e)))
|
||
return
|
||
|
||
@asyncio.coroutine
|
||
def _add_ubridge_connection(self, nio, adapter_number, namespace):
|
||
"""
|
||
Creates a connection in uBridge.
|
||
|
||
:param nio: NIO instance or None if it's a dummu interface (if an interface is missing in ubridge you can't see it via ifconfig in the container)
|
||
:param adapter_number: adapter number
|
||
:param namespace: Container namespace (pid)
|
||
"""
|
||
try:
|
||
adapter = self._ethernet_adapters[adapter_number]
|
||
except IndexError:
|
||
raise DockerError(
|
||
"Adapter {adapter_number} doesn't exist on Docker container '{name}'".format(name=self.name, adapter_number=adapter_number))
|
||
|
||
for index in range(128):
|
||
if "veth-gns3-ext{}".format(index) not in psutil.net_if_addrs():
|
||
adapter.ifc = "eth{}".format(str(index))
|
||
adapter.host_ifc = "veth-gns3-ext{}".format(str(index))
|
||
adapter.guest_ifc = "veth-gns3-int{}".format(str(index))
|
||
break
|
||
if not hasattr(adapter, "ifc"):
|
||
raise DockerError(
|
||
"Adapter {adapter_number} couldn't allocate interface on Docker container '{name}'. Too many Docker interfaces already exists".format(
|
||
name=self.name, adapter_number=adapter_number))
|
||
|
||
yield from self._ubridge_hypervisor.send(
|
||
'docker create_veth {hostif} {guestif}'.format(
|
||
guestif=adapter.guest_ifc, hostif=adapter.host_ifc))
|
||
|
||
log.debug("Move container %s adapter %s to namespace %s", self.name, adapter.guest_ifc, namespace)
|
||
try:
|
||
yield from self._ubridge_hypervisor.send(
|
||
'docker move_to_ns {ifc} {ns} eth{adapter}'.format(
|
||
ifc=adapter.guest_ifc, ns=namespace, adapter=adapter_number))
|
||
except UbridgeError as e:
|
||
raise UbridgeNamespaceError(e)
|
||
|
||
if isinstance(nio, NIOUDP):
|
||
yield from self._ubridge_hypervisor.send(
|
||
'bridge create bridge{}'.format(adapter_number))
|
||
yield from self._ubridge_hypervisor.send(
|
||
'bridge add_nio_linux_raw bridge{adapter} {ifc}'.format(
|
||
ifc=adapter.host_ifc, adapter=adapter_number))
|
||
|
||
yield from self._ubridge_hypervisor.send(
|
||
'bridge add_nio_udp bridge{adapter} {lport} {rhost} {rport}'.format(
|
||
adapter=adapter_number, lport=nio.lport, rhost=nio.rhost,
|
||
rport=nio.rport))
|
||
|
||
if nio.capturing:
|
||
yield from self._ubridge_hypervisor.send(
|
||
'bridge start_capture bridge{adapter} "{pcap_file}"'.format(
|
||
adapter=adapter_number, pcap_file=nio.pcap_output_file))
|
||
|
||
yield from self._ubridge_hypervisor.send(
|
||
'bridge start bridge{adapter}'.format(adapter=adapter_number))
|
||
|
||
def _delete_ubridge_connection(self, adapter_number):
|
||
"""Deletes a connection in uBridge.
|
||
|
||
:param adapter_number: adapter number
|
||
"""
|
||
if not self._ubridge_hypervisor or not self._ubridge_hypervisor.is_running():
|
||
return
|
||
|
||
adapter = self._ethernet_adapters[adapter_number]
|
||
|
||
yield from self._ubridge_hypervisor.send("bridge delete bridge{name}".format(
|
||
name=adapter_number))
|
||
yield from self._ubridge_hypervisor.send('docker delete_veth {hostif}'.format(hostif=adapter.host_ifc))
|
||
|
||
@asyncio.coroutine
|
||
def _get_namespace(self):
|
||
result = yield from self.manager.query("GET", "containers/{}/json".format(self._cid))
|
||
return int(result['State']['Pid'])
|
||
|
||
@asyncio.coroutine
|
||
def adapter_add_nio_binding(self, adapter_number, nio):
|
||
"""Adds an adapter NIO binding.
|
||
|
||
:param adapter_number: adapter number
|
||
:param nio: NIO instance to add to the slot/port
|
||
"""
|
||
try:
|
||
adapter = self._ethernet_adapters[adapter_number]
|
||
except IndexError:
|
||
raise DockerError(
|
||
"Adapter {adapter_number} doesn't exist on Docker container '{name}'".format(
|
||
name=self.name, adapter_number=adapter_number))
|
||
|
||
adapter.add_nio(0, nio)
|
||
log.info(
|
||
"Docker container '{name}' [{id}]: {nio} added to adapter {adapter_number}".format(
|
||
name=self.name,
|
||
id=self._id,
|
||
nio=nio,
|
||
adapter_number=adapter_number))
|
||
|
||
@asyncio.coroutine
|
||
def adapter_remove_nio_binding(self, adapter_number):
|
||
"""
|
||
Removes an adapter NIO binding.
|
||
|
||
:param adapter_number: adapter number
|
||
|
||
:returns: NIO instance
|
||
"""
|
||
try:
|
||
adapter = self._ethernet_adapters[adapter_number]
|
||
except IndexError:
|
||
raise DockerError(
|
||
"Adapter {adapter_number} doesn't exist on Docker VM '{name}'".format(
|
||
name=self.name, adapter_number=adapter_number))
|
||
|
||
adapter.remove_nio(0)
|
||
yield from self._delete_ubridge_connection(adapter_number)
|
||
|
||
log.info(
|
||
"Docker VM '{name}' [{id}]: {nio} removed from adapter {adapter_number}".format(
|
||
name=self.name, id=self.id, nio=adapter.host_ifc,
|
||
adapter_number=adapter_number))
|
||
|
||
@property
|
||
def adapters(self):
|
||
"""Returns the number of Ethernet adapters for this Docker VM.
|
||
|
||
:returns: number of adapters
|
||
:rtype: int
|
||
"""
|
||
return len(self._ethernet_adapters)
|
||
|
||
@adapters.setter
|
||
def adapters(self, adapters):
|
||
"""Sets the number of Ethernet adapters for this Docker container.
|
||
|
||
:param adapters: number of adapters
|
||
"""
|
||
|
||
self._ethernet_adapters.clear()
|
||
for adapter_number in range(0, adapters):
|
||
self._ethernet_adapters.append(EthernetAdapter())
|
||
|
||
log.info(
|
||
'Docker container "{name}" [{id}]: number of Ethernet adapters changed to {adapters}'.format(
|
||
name=self._name,
|
||
id=self._id,
|
||
adapters=adapters))
|
||
|
||
@asyncio.coroutine
|
||
def pull_image(self, image):
|
||
"""
|
||
Pull image from docker repository
|
||
"""
|
||
log.info("Pull %s from docker hub", image)
|
||
response = yield from self.manager.http_query("POST", "images/create", params={"fromImage": image})
|
||
# The pull api will stream status via an HTTP JSON stream
|
||
content = ""
|
||
while True:
|
||
chunk = yield from response.content.read(1024)
|
||
if not chunk:
|
||
break
|
||
content += chunk.decode("utf-8")
|
||
|
||
try:
|
||
while True:
|
||
content = content.lstrip(" \r\n\t")
|
||
answer, index = json.JSONDecoder().raw_decode(content)
|
||
if "progress" in answer:
|
||
self.project.emit("log.info", {"message": "Pulling image {}:{}: {}".format(self._image, answer["id"], answer["progress"])})
|
||
content = content[index:]
|
||
except ValueError: # Partial JSON
|
||
pass
|
||
self.project.emit("log.info", {"message": "Success pulling image {}".format(self._image)})
|
||
|
||
@asyncio.coroutine
|
||
def _start_ubridge_capture(self, adapter_number, output_file):
|
||
"""
|
||
Start a packet capture in uBridge.
|
||
|
||
:param adapter_number: adapter number
|
||
:param output_file: PCAP destination file for the capture
|
||
"""
|
||
|
||
adapter = "bridge{}".format(adapter_number)
|
||
if not self._ubridge_hypervisor or not self._ubridge_hypervisor.is_running():
|
||
raise VMwareError("Cannot start the packet capture: uBridge is not running")
|
||
yield from self._ubridge_hypervisor.send('bridge start_capture {name} "{output_file}"'.format(name=adapter, output_file=output_file))
|
||
|
||
@asyncio.coroutine
|
||
def _stop_ubridge_capture(self, adapter_number):
|
||
"""
|
||
Stop a packet capture in uBridge.
|
||
|
||
:param adapter_number: adapter number
|
||
"""
|
||
|
||
adapter = "bridge{}".format(adapter_number)
|
||
if not self._ubridge_hypervisor or not self._ubridge_hypervisor.is_running():
|
||
raise VMwareError("Cannot stop the packet capture: uBridge is not running")
|
||
yield from self._ubridge_hypervisor.send("bridge stop_capture {name}".format(name=adapter))
|
||
|
||
@asyncio.coroutine
|
||
def start_capture(self, adapter_number, output_file):
|
||
"""
|
||
Starts a packet capture.
|
||
|
||
:param adapter_number: adapter number
|
||
:param output_file: PCAP destination file for the capture
|
||
"""
|
||
|
||
try:
|
||
adapter = self._ethernet_adapters[adapter_number]
|
||
except KeyError:
|
||
raise DockerError("Adapter {adapter_number} doesn't exist on Docker VM '{name}'".format(name=self.name,
|
||
adapter_number=adapter_number))
|
||
|
||
nio = adapter.get_nio(0)
|
||
|
||
if not nio:
|
||
raise DockerError("Adapter {} is not connected".format(adapter_number))
|
||
|
||
if nio.capturing:
|
||
raise DockerError("Packet capture is already activated on adapter {adapter_number}".format(adapter_number=adapter_number))
|
||
|
||
nio.startPacketCapture(output_file)
|
||
|
||
if self.status == "started":
|
||
yield from self._start_ubridge_capture(adapter_number, output_file)
|
||
|
||
log.info("Docker VM '{name}' [{id}]: starting packet capture on adapter {adapter_number}".format(name=self.name,
|
||
id=self.id,
|
||
adapter_number=adapter_number))
|
||
|
||
def stop_capture(self, adapter_number):
|
||
"""
|
||
Stops a packet capture.
|
||
|
||
:param adapter_number: adapter number
|
||
"""
|
||
|
||
try:
|
||
adapter = self._ethernet_adapters[adapter_number]
|
||
except KeyError:
|
||
raise DockerError("Adapter {adapter_number} doesn't exist on Docker VM '{name}'".format(name=self.name,
|
||
adapter_number=adapter_number))
|
||
|
||
nio = adapter.get_nio(0)
|
||
|
||
if not nio:
|
||
raise DockerError("Adapter {} is not connected".format(adapter_number))
|
||
|
||
nio.stopPacketCapture()
|
||
|
||
if self.status == "started":
|
||
yield from self._stop_ubridge_capture(adapter_number)
|
||
|
||
log.info("Docker VM '{name}' [{id}]: stopping packet capture on adapter {adapter_number}".format(name=self.name,
|
||
id=self.id,
|
||
adapter_number=adapter_number))
|
||
|
||
@asyncio.coroutine
|
||
def _get_log(self):
|
||
"""
|
||
Return the log from the container
|
||
|
||
:returns: string
|
||
"""
|
||
|
||
result = yield from self.manager.query("GET", "containers/{}/logs".format(self._cid), params={"stderr": 1, "stdout": 1})
|
||
return result
|
||
|
||
@asyncio.coroutine
|
||
def delete(self):
|
||
"""
|
||
Delete the VM (including all its files).
|
||
"""
|
||
yield from self.close()
|
||
yield from super().delete()
|