mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-12-23 22:52:25 +00:00
85336e0fca
bytes of their ELF header).
829 lines
30 KiB
Python
829 lines
30 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (C) 2014 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/>.
|
|
|
|
"""
|
|
IOU device management (creates command line, processes, files etc.) in
|
|
order to run an IOU instance.
|
|
"""
|
|
|
|
import os
|
|
import socket
|
|
import errno
|
|
import signal
|
|
import subprocess
|
|
import argparse
|
|
import threading
|
|
import configparser
|
|
from .ioucon import start_ioucon
|
|
from .iou_error import IOUError
|
|
from .adapters.ethernet_adapter import EthernetAdapter
|
|
from .adapters.serial_adapter import SerialAdapter
|
|
from .nios.nio_udp import NIO_UDP
|
|
from .nios.nio_tap import NIO_TAP
|
|
from .nios.nio_generic_ethernet import NIO_GenericEthernet
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class IOUDevice(object):
|
|
"""
|
|
IOU device implementation.
|
|
|
|
:param path: path to IOU executable
|
|
:param working_dir: path to a working directory
|
|
:param host: host/address to bind for console and UDP connections
|
|
:param name: name of this IOU device
|
|
"""
|
|
|
|
_instances = []
|
|
|
|
def __init__(self, path, working_dir, host="127.0.0.1", name=None):
|
|
|
|
# find an instance identifier (0 < id <= 512)
|
|
self._id = 0
|
|
for identifier in range(1, 513):
|
|
if identifier not in self._instances:
|
|
self._id = identifier
|
|
self._instances.append(self._id)
|
|
break
|
|
|
|
if self._id == 0:
|
|
raise IOUError("Maximum number of IOU instances reached")
|
|
|
|
if name:
|
|
self._name = name
|
|
else:
|
|
self._name = "IOU{}".format(self._id)
|
|
self._path = path
|
|
self._iourc = ""
|
|
self._iouyap = ""
|
|
self._console = None
|
|
self._working_dir = None
|
|
self._command = []
|
|
self._process = None
|
|
self._iouyap_process = None
|
|
self._iou_stdout_file = ""
|
|
self._iouyap_stdout_file = ""
|
|
self._ioucon_thead = None
|
|
self._ioucon_thread_stop_event = None
|
|
self._host = host
|
|
self._started = False
|
|
|
|
# IOU settings
|
|
self._ethernet_adapters = [EthernetAdapter(), EthernetAdapter()] # one adapter = 4 interfaces
|
|
self._serial_adapters = [SerialAdapter(), SerialAdapter()] # one adapter = 4 interfaces
|
|
self._slots = self._ethernet_adapters + self._serial_adapters
|
|
self._nvram = 128 # Kilobytes
|
|
self._startup_config = ""
|
|
self._ram = 256 # Megabytes
|
|
|
|
# update the working directory
|
|
self.working_dir = working_dir
|
|
|
|
log.info("IOU device {name} [id={id}] has been created".format(name=self._name,
|
|
id=self._id))
|
|
|
|
def defaults(self):
|
|
"""
|
|
Returns all the default attribute values for IOU.
|
|
|
|
:returns: default values (dictionary)
|
|
"""
|
|
|
|
iou_defaults = {"name": self._name,
|
|
"path": self._path,
|
|
"startup_config": self._startup_config,
|
|
"ram": self._ram,
|
|
"nvram": self._nvram,
|
|
"ethernet_adapters": len(self._ethernet_adapters),
|
|
"serial_adapters": len(self._serial_adapters),
|
|
"console": self._console}
|
|
|
|
return iou_defaults
|
|
|
|
@property
|
|
def id(self):
|
|
"""
|
|
Returns the unique ID for this IOU device.
|
|
|
|
:returns: id (integer)
|
|
"""
|
|
|
|
return(self._id)
|
|
|
|
@classmethod
|
|
def reset(cls):
|
|
"""
|
|
Resets allocated instance list.
|
|
"""
|
|
|
|
cls._instances.clear()
|
|
|
|
@property
|
|
def name(self):
|
|
"""
|
|
Returns the name of this IOU device.
|
|
|
|
:returns: name
|
|
"""
|
|
|
|
return self._name
|
|
|
|
@name.setter
|
|
def name(self, new_name):
|
|
"""
|
|
Sets the name of this IOU device.
|
|
|
|
:param new_name: name
|
|
"""
|
|
|
|
self._name = new_name
|
|
log.info("IOU {name} [id={id}]: renamed to {new_name}".format(name=self._name,
|
|
id=self._id,
|
|
new_name=new_name))
|
|
|
|
@property
|
|
def path(self):
|
|
"""
|
|
Returns the path to the IOU executable.
|
|
|
|
:returns: path to IOU
|
|
"""
|
|
|
|
return(self._path)
|
|
|
|
@path.setter
|
|
def path(self, path):
|
|
"""
|
|
Sets the path to the IOU executable.
|
|
|
|
:param path: path to IOU
|
|
"""
|
|
|
|
self._path = path
|
|
log.info("IOU {name} [id={id}]: path changed to {path}".format(name=self._name,
|
|
id=self._id,
|
|
path=path))
|
|
|
|
@property
|
|
def iourc(self):
|
|
"""
|
|
Returns the path to the iourc file.
|
|
|
|
:returns: path to the iourc file
|
|
"""
|
|
|
|
return(self._iourc)
|
|
|
|
@iourc.setter
|
|
def iourc(self, iourc):
|
|
"""
|
|
Sets the path to the iourc file.
|
|
|
|
:param path: path to the iourc file.
|
|
"""
|
|
|
|
self._iourc = iourc
|
|
log.info("IOU {name} [id={id}]: iourc file path set to {path}".format(name=self._name,
|
|
id=self._id,
|
|
path=self._iourc))
|
|
|
|
@property
|
|
def iouyap(self):
|
|
"""
|
|
Returns the path to iouyap
|
|
|
|
:returns: path to iouyap
|
|
"""
|
|
|
|
return(self._iouyap)
|
|
|
|
@iouyap.setter
|
|
def iouyap(self, iouyap):
|
|
"""
|
|
Sets the path to iouyap.
|
|
|
|
:param path: path to iouyap
|
|
"""
|
|
|
|
self._iouyap = iouyap
|
|
log.info("IOU {name} [id={id}]: iouyap path set to {path}".format(name=self._name,
|
|
id=self._id,
|
|
path=self._iouyap))
|
|
|
|
@property
|
|
def working_dir(self):
|
|
"""
|
|
Returns current working directory
|
|
|
|
:returns: path to the working directory
|
|
"""
|
|
|
|
return self._working_dir
|
|
|
|
@working_dir.setter
|
|
def working_dir(self, working_dir):
|
|
"""
|
|
Sets the working directory for IOU.
|
|
|
|
:param working_dir: path to the working directory
|
|
"""
|
|
|
|
# create our own working directory
|
|
working_dir = os.path.join(working_dir, "iou", "device-{}".format(self._id))
|
|
try:
|
|
os.makedirs(working_dir)
|
|
except FileExistsError:
|
|
pass
|
|
except OSError as e:
|
|
raise IOUError("Could not create working directory {}: {}".format(working_dir, e))
|
|
|
|
self._working_dir = working_dir
|
|
log.info("IOU {name} [id={id}]: working directory changed to {wd}".format(name=self._name,
|
|
id=self._id,
|
|
wd=self._working_dir))
|
|
|
|
@property
|
|
def console(self):
|
|
"""
|
|
Returns the TCP console port.
|
|
|
|
:returns: console port (integer)
|
|
"""
|
|
|
|
return self._console
|
|
|
|
@console.setter
|
|
def console(self, console):
|
|
"""
|
|
Sets the TCP console port.
|
|
|
|
:param console: console port (integer)
|
|
"""
|
|
|
|
self._console = console
|
|
log.info("IOU {name} [id={id}]: console port set to {port}".format(name=self._name,
|
|
id=self._id,
|
|
port=console))
|
|
|
|
def command(self):
|
|
"""
|
|
Returns the IOU command line.
|
|
|
|
:returns: IOU command line (string)
|
|
"""
|
|
|
|
return " ".join(self._build_command())
|
|
|
|
def delete(self):
|
|
"""
|
|
Deletes this IOU device.
|
|
"""
|
|
|
|
self.stop()
|
|
self._instances.remove(self._id)
|
|
log.info("IOU device {name} [id={id}] has been deleted".format(name=self._name,
|
|
id=self._id))
|
|
|
|
@property
|
|
def started(self):
|
|
"""
|
|
Returns either this IOU device has been started or not.
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
return self._started
|
|
|
|
def _update_iouyap_config(self):
|
|
"""
|
|
Updates the iouyap.ini file.
|
|
"""
|
|
|
|
iouyap_ini = os.path.join(self._working_dir, "iouyap.ini")
|
|
|
|
config = configparser.ConfigParser()
|
|
config["default"] = {"netmap": "NETMAP",
|
|
"base_port": "49000"}
|
|
|
|
bay_id = 0
|
|
for adapter in self._slots:
|
|
unit_id = 0
|
|
for unit in adapter.ports.keys():
|
|
nio = adapter.get_nio(unit)
|
|
if nio:
|
|
if isinstance(nio, NIO_UDP):
|
|
# UDP tunnel
|
|
connection = {"tunnel_udp": "{lport}:{rhost}:{rport}".format(lport=nio.lport,
|
|
rhost=nio.rhost,
|
|
rport=nio.rport)}
|
|
elif isinstance(nio, NIO_TAP):
|
|
# TAP interface
|
|
connection = {"tap_dev": "{tap_device}".format(tap_device=nio.tap_device)}
|
|
|
|
elif isinstance(nio, NIO_GenericEthernet):
|
|
# Ethernet interface
|
|
connection = {"eth_dev": "{ethernet_device}".format(ethernet_device=nio.ethernet_device)}
|
|
|
|
config["{iouyap_id}:{bay}/{unit}".format(iouyap_id=str(self._id + 512), bay=bay_id, unit=unit_id)] = connection
|
|
unit_id += 1
|
|
bay_id += 1
|
|
|
|
try:
|
|
with open(iouyap_ini, "w") as config_file:
|
|
config.write(config_file)
|
|
log.info("IOU {name} [id={id}]: iouyap.ini updated".format(name=self._name,
|
|
id=self._id))
|
|
except OSError as e:
|
|
raise IOUError("Could not create {}: {}".format(iouyap_ini, e))
|
|
|
|
def _create_netmap_config(self):
|
|
"""
|
|
Creates the NETMAP file.
|
|
"""
|
|
|
|
netmap_path = os.path.join(self._working_dir, "NETMAP")
|
|
try:
|
|
with open(netmap_path, "w") as f:
|
|
for bay in range(0, 16):
|
|
for unit in range(0, 4):
|
|
f.write("{iouyap_id}:{bay}/{unit}{iou_id:>5d}:{bay}/{unit}\n".format(iouyap_id=str(self._id + 512),
|
|
bay=bay,
|
|
unit=unit,
|
|
iou_id=self._id))
|
|
log.info("IOU {name} [id={id}]: NETMAP file created".format(name=self._name,
|
|
id=self._id))
|
|
except OSError as e:
|
|
raise IOUError("Could not create {}: {}".format(netmap_path, e))
|
|
|
|
def _start_ioucon(self):
|
|
"""
|
|
Starts ioucon thread (for console connections).
|
|
"""
|
|
|
|
if not self._ioucon_thead:
|
|
telnet_server = "{}:{}".format(self._host, self._console)
|
|
log.info("starting ioucon for IOU instance {} to accept Telnet connections on {}".format(self._name, telnet_server))
|
|
args = argparse.Namespace(appl_id=str(self._id), debug=False, escape='^^', telnet_limit=0, telnet_server=telnet_server)
|
|
self._ioucon_thread_stop_event = threading.Event()
|
|
self._ioucon_thead = threading.Thread(target=start_ioucon, args=(args, self._ioucon_thread_stop_event))
|
|
self._ioucon_thead.start()
|
|
|
|
def _start_iouyap(self):
|
|
"""
|
|
Starts iouyap (handles connections to and from this IOU device).
|
|
"""
|
|
|
|
try:
|
|
self._update_iouyap_config()
|
|
command = [self._iouyap, str(self._id + 512)] # iouyap has always IOU ID + 512
|
|
log.info("starting iouyap: {}".format(command))
|
|
self._iouyap_stdout_file = os.path.join(self._working_dir, "iouyap.log")
|
|
log.info("logging to {}".format(self._iouyap_stdout_file))
|
|
with open(self._iouyap_stdout_file, "w") as fd:
|
|
self._iouyap_process = subprocess.Popen(command,
|
|
stdout=fd,
|
|
stderr=subprocess.STDOUT,
|
|
cwd=self._working_dir)
|
|
|
|
log.info("iouyap started PID={}".format(self._iouyap_process.pid))
|
|
except OSError as e:
|
|
iouyap_stdout = self.read_iouyap_stdout()
|
|
log.error("could not start iouyap: {}\n{}".format(e, iouyap_stdout))
|
|
raise IOUError("Could not start iouyap: {}\n{}".format(e, iouyap_stdout))
|
|
|
|
def start(self):
|
|
"""
|
|
Starts the IOU process.
|
|
"""
|
|
|
|
if not self.is_running():
|
|
|
|
if not os.path.isfile(iou_path):
|
|
raise IOUError("IOU image '{}' is not accessible".format(iou_path))
|
|
|
|
try:
|
|
with open(iou_path, "rb") as f:
|
|
# read the first 7 bytes of the file.
|
|
elf_header_start = f.read(7)
|
|
except OSError as e:
|
|
raise IOUError("Cannot read ELF header for IOU image '{}': {}".format(self._path, e))
|
|
|
|
# IOU images must start with the ELF magic number, be 32-bit, little endian
|
|
# and have an ELF version of 1 normal IOS image are big endian!
|
|
if elf_header_start != b'\x7fELF\x01\x01\x01':
|
|
raise IOUError("'{}' is not a valid IOU image".format(self._path))
|
|
|
|
if not os.access(self._path, os.X_OK):
|
|
raise IOUError("IOU image '{}' is not executable".format(self._path))
|
|
|
|
if not self._iourc or not os.path.isfile(self._iourc):
|
|
raise IOUError("A iourc file is necessary to start IOU")
|
|
|
|
if not self._iouyap or not os.path.isfile(self._iouyap):
|
|
raise IOUError("iouyap is necessary to start IOU")
|
|
|
|
self._create_netmap_config()
|
|
# created a environment variable pointing to the iourc file.
|
|
env = os.environ.copy()
|
|
env["IOURC"] = self._iourc
|
|
self._command = self._build_command()
|
|
try:
|
|
log.info("starting IOU: {}".format(self._command))
|
|
self._iou_stdout_file = os.path.join(self._working_dir, "iou.log")
|
|
log.info("logging to {}".format(self._iou_stdout_file))
|
|
with open(self._iou_stdout_file, "w") as fd:
|
|
self._process = subprocess.Popen(self._command,
|
|
stdout=fd,
|
|
stderr=subprocess.STDOUT,
|
|
cwd=self._working_dir,
|
|
env=env)
|
|
log.info("IOU instance {} started PID={}".format(self._id, self._process.pid))
|
|
self._started = True
|
|
except OSError as e:
|
|
iou_stdout = self.read_iou_stdout()
|
|
log.error("could not start IOU {}: {}\n{}".format(self._path, e, iou_stdout))
|
|
raise IOUError("could not start IOU {}: {}\n{}".format(self._path, e, iou_stdout))
|
|
|
|
# start console support
|
|
self._start_ioucon()
|
|
# connections support
|
|
self._start_iouyap()
|
|
|
|
def stop(self):
|
|
"""
|
|
Stops the IOU process.
|
|
"""
|
|
|
|
# stop the IOU process
|
|
if self.is_running():
|
|
log.info("stopping IOU instance {} PID={}".format(self._id, self._process.pid))
|
|
try:
|
|
self._process.terminate()
|
|
self._process.wait(1)
|
|
except subprocess.TimeoutExpired:
|
|
self._process.kill()
|
|
if self._process.poll() == None:
|
|
log.warn("IOU instance {} PID={} is still running".format(self._id,
|
|
self._process.pid))
|
|
self._process = None
|
|
self._started = False
|
|
|
|
# stop console support
|
|
if self._ioucon_thead:
|
|
self._ioucon_thread_stop_event.set()
|
|
if self._ioucon_thead.is_alive():
|
|
self._ioucon_thead.join(timeout=0.10)
|
|
self._ioucon_thead = None
|
|
|
|
# stop iouyap
|
|
if self.is_iouyap_running():
|
|
log.info("stopping iouyap PID={} for IOU instance {}".format(self._iouyap_process.pid, self._id))
|
|
try:
|
|
self._iouyap_process.terminate()
|
|
self._iouyap_process.wait(1)
|
|
except subprocess.TimeoutExpired:
|
|
self._iouyap_process.kill()
|
|
if self._iouyap_process.poll() == None:
|
|
log.warn("iouyap PID={} for IOU instance {} is still running".format(self._iouyap_process.pid,
|
|
self._id))
|
|
self._iouyap_process = None
|
|
|
|
def read_iou_stdout(self):
|
|
"""
|
|
Reads the standard output of the IOU process.
|
|
Only use when the process has been stopped or has crashed.
|
|
"""
|
|
|
|
output = ""
|
|
if self._iou_stdout_file:
|
|
try:
|
|
with open(self._iou_stdout_file) as file:
|
|
output = file.read()
|
|
except OSError as e:
|
|
log.warn("could not read {}: {}".format(self._iou_stdout_file, e))
|
|
return output
|
|
|
|
def read_iouyap_stdout(self):
|
|
"""
|
|
Reads the standard output of the iouyap process.
|
|
Only use when the process has been stopped or has crashed.
|
|
"""
|
|
|
|
output = ""
|
|
if self._iouyap_stdout_file:
|
|
try:
|
|
with open(self._iouyap_stdout_file) as file:
|
|
output = file.read()
|
|
except OSError as e:
|
|
log.warn("could not read {}: {}".format(self._iouyap_stdout_file, e))
|
|
return output
|
|
|
|
def is_running(self):
|
|
"""
|
|
Checks if the IOU process is running
|
|
|
|
:returns: True or False
|
|
"""
|
|
|
|
if self._process and self._process.poll() == None:
|
|
return True
|
|
return False
|
|
|
|
def is_iouyap_running(self):
|
|
"""
|
|
Checks if the iouyap process is running
|
|
|
|
:returns: True or False
|
|
"""
|
|
|
|
if self._iouyap_process and self._iouyap_process.poll() == None:
|
|
return True
|
|
return False
|
|
|
|
def slot_add_nio_binding(self, slot_id, port_id, nio):
|
|
"""
|
|
Adds a slot NIO binding.
|
|
|
|
:param slot_id: slot ID
|
|
:param port_id: port ID
|
|
:param nio: NIO instance to add to the slot/port
|
|
"""
|
|
|
|
try:
|
|
adapter = self._slots[slot_id]
|
|
except IndexError:
|
|
raise IOUError("Slot {slot_id} doesn't exist on IOU {name}".format(name=self._name,
|
|
slot_id=slot_id))
|
|
|
|
if not adapter.port_exists(port_id):
|
|
raise IOUError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter,
|
|
port_id=port_id))
|
|
|
|
adapter.add_nio(port_id, nio)
|
|
log.info("IOU {name} [id={id}]: {nio} added to {slot_id}/{port_id}".format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
slot_id=slot_id,
|
|
port_id=port_id))
|
|
if self.is_iouyap_running():
|
|
self._update_iouyap_config()
|
|
os.kill(self._iouyap_process.pid, signal.SIGHUP)
|
|
|
|
def slot_remove_nio_binding(self, slot_id, port_id):
|
|
"""
|
|
Removes a slot NIO binding.
|
|
|
|
:param slot_id: slot ID
|
|
:param port_id: port ID
|
|
"""
|
|
|
|
try:
|
|
adapter = self._slots[slot_id]
|
|
except IndexError:
|
|
raise IOUError("Slot {slot_id} doesn't exist on IOU {name}".format(name=self._name,
|
|
slot_id=slot_id))
|
|
|
|
if not adapter.port_exists(port_id):
|
|
raise IOUError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter,
|
|
port_id=port_id))
|
|
|
|
nio = adapter.get_nio(port_id)
|
|
adapter.remove_nio(port_id)
|
|
log.info("IOU {name} [id={id}]: {nio} removed from {slot_id}/{port_id}".format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
slot_id=slot_id,
|
|
port_id=port_id))
|
|
if self.is_iouyap_running():
|
|
self._update_iouyap_config()
|
|
os.kill(self._iouyap_process.pid, signal.SIGHUP)
|
|
|
|
def _build_command(self):
|
|
"""
|
|
Command to start the IOU process.
|
|
(to be passed to subprocess.Popen())
|
|
|
|
IOU command line:
|
|
Usage: <image> [options] <application id>
|
|
<image>: unix-js-m | unix-is-m | unix-i-m | ...
|
|
<application id>: instance identifier (0 < id <= 1024)
|
|
Options:
|
|
-e <n> Number of Ethernet interfaces (default 2)
|
|
-s <n> Number of Serial interfaces (default 2)
|
|
-n <n> Size of nvram in Kb (default 64KB)
|
|
-b <string> IOS debug string
|
|
-c <name> Configuration file name
|
|
-d Generate debug information
|
|
-t Netio message trace
|
|
-q Suppress informational messages
|
|
-h Display this help
|
|
-C Turn off use of host clock
|
|
-m <n> Megabytes of router memory (default 256MB)
|
|
-L Disable local console, use remote console
|
|
-l Enable Layer 1 keepalive messages
|
|
-u <n> UDP port base for distributed networks
|
|
-R Ignore options from the IOURC file
|
|
-U Disable unix: file system location
|
|
-W Disable watchdog timer
|
|
-N Ignore the NETMAP file
|
|
"""
|
|
|
|
#TODO: add support for keepalive and watchdog
|
|
command = [self._path]
|
|
if len(self._ethernet_adapters) != 2:
|
|
command.extend(["-e", str(len(self._ethernet_adapters))])
|
|
if len(self._serial_adapters) != 2:
|
|
command.extend(["-s", str(len(self._serial_adapters))])
|
|
command.extend(["-n", str(self._nvram)])
|
|
command.extend(["-m", str(self._ram)])
|
|
command.extend(["-L"]) # disable local console, use remote console
|
|
if self._startup_config:
|
|
command.extend(["-c", self._startup_config])
|
|
command.extend([str(self._id)])
|
|
return command
|
|
|
|
@property
|
|
def ram(self):
|
|
"""
|
|
Returns the amount of RAM allocated to this IOU instance.
|
|
|
|
:returns: amount of RAM in Mbytes (integer)
|
|
"""
|
|
|
|
return self._ram
|
|
|
|
@ram.setter
|
|
def ram(self, ram):
|
|
"""
|
|
Sets amount of RAM allocated to this IOU instance.
|
|
|
|
:param ram: amount of RAM in Mbytes (integer)
|
|
"""
|
|
|
|
if self._ram == ram:
|
|
return
|
|
|
|
log.info("IOU {name} [id={id}]: RAM updated from {old_ram}MB to {new_ram}MB".format(name=self._name,
|
|
id=self._id,
|
|
old_ram=self._ram,
|
|
new_ram=ram))
|
|
|
|
self._ram = ram
|
|
|
|
@property
|
|
def nvram(self):
|
|
"""
|
|
Returns the mount of NVRAM allocated to this IOU instance.
|
|
|
|
:returns: amount of NVRAM in Kbytes (integer)
|
|
"""
|
|
|
|
return self._nvram
|
|
|
|
@nvram.setter
|
|
def nvram(self, nvram):
|
|
"""
|
|
Sets amount of NVRAM allocated to this IOU instance.
|
|
|
|
:param nvram: amount of NVRAM in Kbytes (integer)
|
|
"""
|
|
|
|
if self._nvram == nvram:
|
|
return
|
|
|
|
log.info("IOU {name} [id={id}]: NVRAM updated from {old_nvram}KB to {new_nvram}KB".format(name=self._name,
|
|
id=self._id,
|
|
old_nvram=self._nvram,
|
|
new_nvram=nvram))
|
|
self._nvram = nvram
|
|
|
|
@property
|
|
def startup_config(self):
|
|
"""
|
|
Returns the startup-config for this IOU instance.
|
|
|
|
:returns: path to startup-config file
|
|
"""
|
|
|
|
return self._startup_config
|
|
|
|
@startup_config.setter
|
|
def startup_config(self, startup_config):
|
|
"""
|
|
Sets the startup-config for this IOU instance.
|
|
|
|
:param startup_config: path to startup-config file
|
|
"""
|
|
|
|
self._startup_config = startup_config
|
|
log.info("IOU {name} [id={id}]: startup_config set to {config}".format(name=self._name,
|
|
id=self._id,
|
|
config=self._startup_config))
|
|
|
|
@property
|
|
def ethernet_adapters(self):
|
|
"""
|
|
Returns the number of Ethernet adapters for this IOU instance.
|
|
|
|
:returns: number of adapters
|
|
"""
|
|
|
|
return len(self._ethernet_adapters)
|
|
|
|
@ethernet_adapters.setter
|
|
def ethernet_adapters(self, ethernet_adapters):
|
|
"""
|
|
Sets the number of Ethernet adapters for this IOU instance.
|
|
|
|
:param ethernet_adapters: number of adapters
|
|
"""
|
|
|
|
self._ethernet_adapters.clear()
|
|
for _ in range(0, ethernet_adapters):
|
|
self._ethernet_adapters.append(EthernetAdapter())
|
|
|
|
log.info("IOU {name} [id={id}]: number of Ethernet adapters changed to {adapters}".format(name=self._name,
|
|
id=self._id,
|
|
adapters=len(self._ethernet_adapters)))
|
|
|
|
self._slots = self._ethernet_adapters + self._serial_adapters
|
|
|
|
@property
|
|
def serial_adapters(self):
|
|
"""
|
|
Returns the number of Serial adapters for this IOU instance.
|
|
|
|
:returns: number of adapters
|
|
"""
|
|
|
|
return len(self._serial_adapters)
|
|
|
|
@serial_adapters.setter
|
|
def serial_adapters(self, serial_adapters):
|
|
"""
|
|
Sets the number of Serial adapters for this IOU instance.
|
|
|
|
:param serial_adapters: number of adapters
|
|
"""
|
|
|
|
self._serial_adapters.clear()
|
|
for _ in range(0, serial_adapters):
|
|
self._serial_adapters.append(SerialAdapter())
|
|
|
|
log.info("IOU {name} [id={id}]: number of Serial adapters changed to {adapters}".format(name=self._name,
|
|
id=self._id,
|
|
adapters=len(self._serial_adapters)))
|
|
|
|
self._slots = self._ethernet_adapters + self._serial_adapters
|
|
|
|
@staticmethod
|
|
def find_unused_port(start_port, end_port, host='127.0.0.1', socket_type="TCP"):
|
|
"""
|
|
Finds an unused port in the specified range.
|
|
|
|
:param start_port: first port in the range
|
|
:param end_port: last port in the range
|
|
:param host: host/address for bind()
|
|
:param socket_type: TCP (default) or UDP
|
|
"""
|
|
|
|
if socket_type == "UDP":
|
|
socket_type = socket.SOCK_DGRAM
|
|
else:
|
|
socket_type = socket.SOCK_STREAM
|
|
|
|
for port in range(start_port, end_port):
|
|
try:
|
|
if ":" in host:
|
|
# IPv6 address support
|
|
with socket.socket(socket.AF_INET6, socket_type) as s:
|
|
s.bind((host, port)) # the port is available if bind is a success
|
|
else:
|
|
with socket.socket(socket.AF_INET, socket_type) as s:
|
|
s.bind((host, port)) # the port is available if bind is a success
|
|
return port
|
|
except OSError as e:
|
|
if e.errno == errno.EADDRINUSE: # socket already in use
|
|
if port + 1 == end_port:
|
|
raise IOUError("Could not find a free port between {0} and {1}".format(start_port, end_port))
|
|
else:
|
|
continue
|
|
else:
|
|
raise IOUError("Could not find an unused port: {}".format(e))
|