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gns3-server
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New UDP and console port allocation system for IOU. Fixes duplicated

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port issues.
pull/12/head
grossmj 10 years ago
parent 62da0a5ec2
commit 51c1f15853
3 changed files with 67 additions and 36 deletions
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6
gns3server/main.py
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@ -111,6 +111,12 @@ def main():
# (UNIX/Linux only)
locale_check()
try:
os.getcwd()
except FileNotFoundError:
log.critical("the current working directory doesn't exist")
return
server = Server(options.host,
options.port,
ipc=options.ipc)

58
gns3server/modules/iou/__init__.py
Unescape View File

@ -91,11 +91,9 @@ class IOU(IModule):
self._iou_instances = {}
self._console_start_port_range = 4001
self._console_end_port_range = 4512
self._allocated_console_ports = []
self._current_console_port = self._console_start_port_range
self._allocated_udp_ports = []
self._udp_start_port_range = 30001
self._udp_end_port_range = 40001
self._current_udp_port = self._udp_start_port_range
self._host = kwargs["host"]
self._projects_dir = kwargs["projects_dir"]
self._tempdir = kwargs["temp_dir"]
@ -179,9 +177,7 @@ class IOU(IModule):
IOUDevice.reset()
self._iou_instances.clear()
self._remote_server = False
self._current_console_port = self._console_start_port_range
self._current_udp_port = self._udp_start_port_range
self._allocated_udp_ports.clear()
if self._iourc and os.path.isfile(self._iourc):
try:
@ -323,15 +319,13 @@ class IOU(IModule):
except OSError as e:
raise IOUError("Could not create working directory {}".format(e))
iou_instance = IOUDevice(iou_path, self._working_dir, host=self._host, name=name)
# find a console port
if self._current_console_port > self._console_end_port_range:
self._current_console_port = self._console_start_port_range
try:
iou_instance.console = find_unused_port(self._current_console_port, self._console_end_port_range, self._host)
except Exception as e:
raise IOUError(e)
self._current_console_port += 1
iou_instance = IOUDevice(iou_path,
self._working_dir,
self._host,
name,
self._console_start_port_range,
self._console_end_port_range)
except IOUError as e:
self.send_custom_error(str(e))
return
@ -557,26 +551,20 @@ class IOU(IModule):
return
try:
# find a UDP port
if self._current_udp_port >= self._udp_end_port_range:
self._current_udp_port = self._udp_start_port_range
try:
port = find_unused_port(self._current_udp_port, self._udp_end_port_range, host=self._host, socket_type="UDP")
except Exception as e:
raise IOUError(e)
self._current_udp_port += 1
log.info("{} [id={}] has allocated UDP port {} with host {}".format(iou_instance.name,
iou_instance.id,
port,
self._host))
response = {"lport": port}
except IOUError as e:
port = find_unused_port(self._udp_start_port_range,
self._udp_end_port_range,
host=self._host,
socket_type="UDP",
ignore_ports=self._allocated_udp_ports)
except Exception as e:
self.send_custom_error(str(e))
return
self._allocated_udp_ports.append(port)
log.info("{} [id={}] has allocated UDP port {} with host {}".format(iou_instance.name,
iou_instance.id,
port,
self._host))
response = {"lport": port}
response["port_id"] = request["port_id"]
self.send_response(response)
@ -698,7 +686,9 @@ class IOU(IModule):
slot = request["slot"]
port = request["port"]
try:
iou_instance.slot_remove_nio_binding(slot, port)
nio = iou_instance.slot_remove_nio_binding(slot, port)
if isinstance(nio, NIO_UDP) and nio.lport in self._allocated_udp_ports:
self._allocated_udp_ports.remove(nio.lport)
except IOUError as e:
self.send_custom_error(str(e))
return

39
gns3server/modules/iou/iou_device.py
Unescape View File

@ -34,6 +34,7 @@ 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
from ..attic import find_unused_port
import logging
log = logging.getLogger(__name__)
@ -47,11 +48,19 @@ class IOUDevice(object):
: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
:param console_start_port_range: TCP console port range start
:param console_end_port_range: TCP console port range end
"""
_instances = []
_allocated_console_ports = []
def __init__(self, path, working_dir, host="127.0.0.1", name=None):
def __init__(self, path,
working_dir,
host="127.0.0.1",
name=None,
console_start_port_range=4001,
console_end_port_range=4512):
# find an instance identifier (0 < id <= 512)
self._id = 0
@ -82,6 +91,8 @@ class IOUDevice(object):
self._ioucon_thread_stop_event = None
self._host = host
self._started = False
self._console_start_port_range = console_start_port_range
self._console_end_port_range = console_end_port_range
# IOU settings
self._ethernet_adapters = [EthernetAdapter(), EthernetAdapter()] # one adapter = 4 interfaces
@ -94,6 +105,16 @@ class IOUDevice(object):
# update the working directory
self.working_dir = working_dir
# allocate a console port
try:
self._console = find_unused_port(self._console_start_port_range,
self._console_end_port_range,
self._host,
ignore_ports=self._allocated_console_ports)
except Exception as e:
raise IOUError(e)
self._allocated_console_ports.append(self._console)
log.info("IOU device {name} [id={id}] has been created".format(name=self._name,
id=self._id))
@ -132,6 +153,7 @@ class IOUDevice(object):
"""
cls._instances.clear()
cls._allocated_console_ports.clear()
@property
def name(self):
@ -275,7 +297,12 @@ class IOUDevice(object):
:param console: console port (integer)
"""
if console in self._allocated_console_ports:
raise IOUError("Console port {} is already in used by another IOU device".format(console))
self._allocated_console_ports.remove(self._console)
self._console = console
self._allocated_console_ports.append(self._console)
log.info("IOU {name} [id={id}]: console port set to {port}".format(name=self._name,
id=self._id,
port=console))
@ -296,6 +323,10 @@ class IOUDevice(object):
self.stop()
self._instances.remove(self._id)
if self.console:
self._allocated_console_ports.remove(self.console)
log.info("IOU device {name} [id={id}] has been deleted".format(name=self._name,
id=self._id))
@ -376,7 +407,7 @@ class IOUDevice(object):
"""
if not self._ioucon_thead:
telnet_server = "{}:{}".format(self._host, self._console)
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()
@ -611,6 +642,8 @@ class IOUDevice(object):
:param slot_id: slot ID
:param port_id: port ID
:returns: NIO instance
"""
try:
@ -634,6 +667,8 @@ class IOUDevice(object):
self._update_iouyap_config()
os.kill(self._iouyap_process.pid, signal.SIGHUP)
return nio
def _build_command(self):
"""
Command to start the IOU process.

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