mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-27 09:18:09 +00:00
450 lines
14 KiB
Python
450 lines
14 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/>.
|
||
|
||
import os
|
||
import logging
|
||
import aiohttp
|
||
import shutil
|
||
import asyncio
|
||
import tempfile
|
||
import psutil
|
||
import platform
|
||
|
||
from pkg_resources import parse_version
|
||
from ..utils.asyncio import wait_run_in_executor
|
||
from ..ubridge.hypervisor import Hypervisor
|
||
from .vm_error import VMError
|
||
|
||
|
||
log = logging.getLogger(__name__)
|
||
|
||
|
||
class BaseVM:
|
||
|
||
"""
|
||
Base vm implementation.
|
||
|
||
:param name: name of this IOU vm
|
||
:param vm_id: IOU instance identifier
|
||
:param project: Project instance
|
||
:param manager: parent VM Manager
|
||
:param console: TCP console port
|
||
:param aux: TCP aux console port
|
||
:param allocate_aux: Boolean if true will allocate an aux console port
|
||
"""
|
||
|
||
def __init__(self, name, vm_id, project, manager, console=None, console_type="telnet", aux=None, allocate_aux=False):
|
||
|
||
self._name = name
|
||
self._usage = ""
|
||
self._id = vm_id
|
||
self._project = project
|
||
self._manager = manager
|
||
self._console = console
|
||
self._aux = aux
|
||
self._console_type = console_type
|
||
self._temporary_directory = None
|
||
self._hw_virtualization = False
|
||
self._ubridge_hypervisor = None
|
||
self._closed = False
|
||
self._vm_status = "stopped"
|
||
self._command_line = ""
|
||
self._allocate_aux = allocate_aux
|
||
|
||
if self._console is not None:
|
||
if console_type == "vnc":
|
||
self._console = self._manager.port_manager.reserve_tcp_port(self._console, self._project, port_range_start=5900, port_range_end=6000)
|
||
else:
|
||
self._console = self._manager.port_manager.reserve_tcp_port(self._console, self._project)
|
||
|
||
# We need to allocate aux before giving a random console port
|
||
if self._aux is not None:
|
||
self._aux = self._manager.port_manager.reserve_tcp_port(self._aux, self._project)
|
||
|
||
if self._console is None:
|
||
if console_type == "vnc":
|
||
# VNC is a special case and the range must be 5900-6000
|
||
self._console = self._manager.port_manager.get_free_tcp_port(self._project, port_range_start=5900, port_range_end=6000)
|
||
else:
|
||
self._console = self._manager.port_manager.get_free_tcp_port(self._project)
|
||
|
||
if self._aux is None and allocate_aux:
|
||
self._aux = self._manager.port_manager.get_free_tcp_port(self._project)
|
||
|
||
log.debug("{module}: {name} [{id}] initialized. Console port {console}".format(module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id,
|
||
console=self._console))
|
||
|
||
def __del__(self):
|
||
|
||
if self._temporary_directory is not None:
|
||
if os.path.exists(self._temporary_directory):
|
||
shutil.rmtree(self._temporary_directory, ignore_errors=True)
|
||
|
||
@property
|
||
def status(self):
|
||
"""Return current VM status"""
|
||
|
||
return self._vm_status
|
||
|
||
@status.setter
|
||
def status(self, status):
|
||
|
||
self._vm_status = status
|
||
self._project.emit("vm.{}".format(status), self)
|
||
|
||
@property
|
||
def command_line(self):
|
||
"""Return command used to start the VM"""
|
||
|
||
return self._command_line
|
||
|
||
@command_line.setter
|
||
def command_line(self, command_line):
|
||
|
||
self._command_line = command_line
|
||
|
||
@property
|
||
def project(self):
|
||
"""
|
||
Returns the VM current project.
|
||
|
||
:returns: Project instance.
|
||
"""
|
||
|
||
return self._project
|
||
|
||
@property
|
||
def name(self):
|
||
"""
|
||
Returns the name for this VM.
|
||
|
||
:returns: name
|
||
"""
|
||
|
||
return self._name
|
||
|
||
@name.setter
|
||
def name(self, new_name):
|
||
"""
|
||
Sets the name of this VM.
|
||
|
||
:param new_name: name
|
||
"""
|
||
|
||
log.info("{module}: {name} [{id}] renamed to {new_name}".format(module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id,
|
||
new_name=new_name))
|
||
self._name = new_name
|
||
|
||
@property
|
||
def usage(self):
|
||
"""
|
||
Returns the usage for this VM.
|
||
|
||
:returns: usage
|
||
"""
|
||
|
||
return self._usage
|
||
|
||
@usage.setter
|
||
def usage(self, new_usage):
|
||
"""
|
||
Sets the usage of this VM.
|
||
|
||
:param new_usage: usage
|
||
"""
|
||
|
||
self._usage = new_usage
|
||
|
||
@property
|
||
def id(self):
|
||
"""
|
||
Returns the ID for this VM.
|
||
|
||
:returns: VM identifier (string)
|
||
"""
|
||
|
||
return self._id
|
||
|
||
@property
|
||
def manager(self):
|
||
"""
|
||
Returns the manager for this VM.
|
||
|
||
:returns: instance of manager
|
||
"""
|
||
|
||
return self._manager
|
||
|
||
@property
|
||
def working_dir(self):
|
||
"""
|
||
Return VM working directory
|
||
"""
|
||
|
||
return self._project.vm_working_directory(self)
|
||
|
||
@property
|
||
def temporary_directory(self):
|
||
if self._temporary_directory is None:
|
||
try:
|
||
self._temporary_directory = tempfile.mkdtemp()
|
||
except OSError as e:
|
||
raise VMError("Can't create temporary directory: {}".format(e))
|
||
return self._temporary_directory
|
||
|
||
def create(self):
|
||
"""
|
||
Creates the VM.
|
||
"""
|
||
|
||
log.info("{module}: {name} [{id}] created".format(module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id))
|
||
|
||
@asyncio.coroutine
|
||
def delete(self):
|
||
"""
|
||
Delete the VM (including all its files).
|
||
"""
|
||
|
||
directory = self.project.vm_working_directory(self)
|
||
if os.path.exists(directory):
|
||
try:
|
||
yield from wait_run_in_executor(shutil.rmtree, directory)
|
||
except OSError as e:
|
||
raise aiohttp.web.HTTPInternalServerError(text="Could not delete the VM working directory: {}".format(e))
|
||
|
||
def start(self):
|
||
"""
|
||
Starts the VM process.
|
||
"""
|
||
|
||
raise NotImplementedError
|
||
|
||
def stop(self):
|
||
"""
|
||
Starts the VM process.
|
||
"""
|
||
|
||
raise NotImplementedError
|
||
|
||
@asyncio.coroutine
|
||
def close(self):
|
||
"""
|
||
Close the VM process.
|
||
"""
|
||
|
||
if self._closed:
|
||
return False
|
||
|
||
log.info("{module}: '{name}' [{id}]: is closing".format(
|
||
module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id))
|
||
|
||
if self._console:
|
||
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
||
self._console = None
|
||
|
||
if self._aux:
|
||
self._manager.port_manager.release_tcp_port(self._aux, self._project)
|
||
self._aux = None
|
||
|
||
self._closed = True
|
||
return True
|
||
|
||
@property
|
||
def allocate_aux(self):
|
||
"""
|
||
:returns: Boolean allocate or not an aux console
|
||
"""
|
||
return self._allocate_aux
|
||
|
||
@allocate_aux.setter
|
||
def allocate_aux(self, allocate_aux):
|
||
"""
|
||
:returns: Boolean allocate or not an aux console
|
||
"""
|
||
self._allocate_aux = allocate_aux
|
||
|
||
@property
|
||
def aux(self):
|
||
"""
|
||
Returns the aux console port of this VM.
|
||
|
||
:returns: aux console port
|
||
"""
|
||
|
||
return self._aux
|
||
|
||
@aux.setter
|
||
def aux(self, aux):
|
||
"""
|
||
Changes the aux port
|
||
|
||
:params aux: Console port (integer) or None to free the port
|
||
"""
|
||
|
||
if aux == self._aux:
|
||
return
|
||
|
||
if self._aux:
|
||
self._manager.port_manager.release_tcp_port(self._aux, self._project)
|
||
self._aux = None
|
||
if aux is not None:
|
||
self._aux = self._manager.port_manager.reserve_tcp_port(aux, self._project)
|
||
log.info("{module}: '{name}' [{id}]: aux port set to {port}".format(module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id,
|
||
port=aux))
|
||
|
||
@property
|
||
def console(self):
|
||
"""
|
||
Returns the console port of this VM.
|
||
|
||
:returns: console port
|
||
"""
|
||
|
||
return self._console
|
||
|
||
@console.setter
|
||
def console(self, console):
|
||
"""
|
||
Changes the console port
|
||
|
||
:params console: Console port (integer) or None to free the port
|
||
"""
|
||
|
||
if console == self._console:
|
||
return
|
||
|
||
if self._console_type == "vnc" and console is not None and console < 5900:
|
||
raise VMError("VNC console require a port superior or equal to 5900")
|
||
|
||
if self._console:
|
||
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
||
self._console = None
|
||
if console is not None:
|
||
self._console = self._manager.port_manager.reserve_tcp_port(console, self._project)
|
||
log.info("{module}: '{name}' [{id}]: console port set to {port}".format(module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id,
|
||
port=console))
|
||
|
||
@property
|
||
def console_type(self):
|
||
"""
|
||
Returns the console type for this VM.
|
||
|
||
:returns: console type (string)
|
||
"""
|
||
|
||
return self._console_type
|
||
|
||
@console_type.setter
|
||
def console_type(self, console_type):
|
||
"""
|
||
Sets the console type for this VM.
|
||
|
||
:param console_type: console type (string)
|
||
"""
|
||
|
||
log.info('QEMU VM "{name}" [{id}] has set the console type to {console_type}'.format(name=self._name,
|
||
id=self._id,
|
||
console_type=console_type))
|
||
|
||
if console_type != self._console_type:
|
||
# get a new port if the console type change
|
||
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
||
if console_type == "vnc":
|
||
# VNC is a special case and the range must be 5900-6000
|
||
self._console = self._manager.port_manager.get_free_tcp_port(self._project, 5900, 6000)
|
||
else:
|
||
self._console = self._manager.port_manager.get_free_tcp_port(self._project)
|
||
|
||
self._console_type = console_type
|
||
log.info("{module}: '{name}' [{id}]: console type set to {console_type}".format(module=self.manager.module_name,
|
||
name=self.name,
|
||
id=self.id,
|
||
console_type=console_type))
|
||
|
||
@property
|
||
def ubridge_path(self):
|
||
"""
|
||
Returns the uBridge executable path.
|
||
|
||
:returns: path to uBridge
|
||
"""
|
||
|
||
path = self._manager.config.get_section_config("Server").get("ubridge_path", "ubridge")
|
||
if path == "ubridge":
|
||
path = shutil.which("ubridge")
|
||
|
||
if path is None:
|
||
raise VMError("uBridge is not installed")
|
||
return path
|
||
|
||
@asyncio.coroutine
|
||
def _start_ubridge(self):
|
||
"""
|
||
Starts uBridge (handles connections to and from this VMware VM).
|
||
"""
|
||
|
||
if not self._manager.has_privileged_access(self.ubridge_path):
|
||
raise VMError("uBridge requires root access or capability to interact with network adapters")
|
||
|
||
server_config = self._manager.config.get_section_config("Server")
|
||
server_host = server_config.get("host")
|
||
self._ubridge_hypervisor = Hypervisor(self._project, self.ubridge_path, self.working_dir, server_host)
|
||
|
||
log.info("Starting new uBridge hypervisor {}:{}".format(self._ubridge_hypervisor.host, self._ubridge_hypervisor.port))
|
||
yield from self._ubridge_hypervisor.start()
|
||
log.info("Hypervisor {}:{} has successfully started".format(self._ubridge_hypervisor.host, self._ubridge_hypervisor.port))
|
||
yield from self._ubridge_hypervisor.connect()
|
||
|
||
@property
|
||
def hw_virtualization(self):
|
||
"""
|
||
Returns either the VM is using hardware virtualization or not.
|
||
|
||
:return: boolean
|
||
"""
|
||
|
||
return self._hw_virtualization
|
||
|
||
def check_available_ram(self, requested_ram):
|
||
"""
|
||
Sends a warning notification if there is not enough RAM on the system to allocate requested RAM.
|
||
|
||
:param requested_ram: requested amount of RAM in MB
|
||
"""
|
||
|
||
available_ram = int(psutil.virtual_memory().available / (1024 * 1024))
|
||
percentage_left = psutil.virtual_memory().percent
|
||
if requested_ram > available_ram:
|
||
message = '"{}" requires {}MB of RAM to run but there is only {}MB - {}% of RAM left on "{}"'.format(self.name,
|
||
requested_ram,
|
||
available_ram,
|
||
percentage_left,
|
||
platform.node())
|
||
self.project.emit("log.warning", {"message": message})
|