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gns3-server/gns3server/modules/dynamips/backends/atmsw.py

313 lines
11 KiB

# -*- 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/>.
import re
from gns3server.modules import IModule
from ..nodes.atm_switch import ATMSwitch
from ..dynamips_error import DynamipsError
from ..schemas.atmsw import ATMSW_CREATE_SCHEMA
from ..schemas.atmsw import ATMSW_DELETE_SCHEMA
from ..schemas.atmsw import ATMSW_UPDATE_SCHEMA
from ..schemas.atmsw import ATMSW_ALLOCATE_UDP_PORT_SCHEMA
from ..schemas.atmsw import ATMSW_ADD_NIO_SCHEMA
from ..schemas.atmsw import ATMSW_DELETE_NIO_SCHEMA
import logging
log = logging.getLogger(__name__)
class ATMSW(object):
@IModule.route("dynamips.atmsw.create")
def atmsw_create(self, request):
"""
Creates a new ATM switch.
Mandatory request parameters:
- name (switch name)
Response parameters:
- id (switch identifier)
- name (switch name)
:param request: JSON request
"""
# validate the request
if not self.validate_request(request, ATMSW_CREATE_SCHEMA):
return
name = request["name"]
try:
if not self._hypervisor_manager:
self.start_hypervisor_manager()
hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
atmsw = ATMSwitch(hypervisor, name)
except DynamipsError as e:
self.send_custom_error(str(e))
return
response = {"name": atmsw.name,
"id": atmsw.id}
self._atm_switches[atmsw.id] = atmsw
self.send_response(response)
@IModule.route("dynamips.atmsw.delete")
def atmsw_delete(self, request):
"""
Deletes a ATM switch.
Mandatory request parameters:
- id (switch identifier)
Response parameters:
- True on success
:param request: JSON request
"""
# validate the request
if not self.validate_request(request, ATMSW_DELETE_SCHEMA):
return
# get the ATM switch instance
atmsw_id = request["id"]
atmsw = self.get_device_instance(atmsw_id, self._atm_switches)
if not atmsw:
return
try:
atmsw.delete()
self._hypervisor_manager.unallocate_hypervisor_for_simulated_device(atmsw)
del self._atm_switches[atmsw_id]
except DynamipsError as e:
self.send_custom_error(str(e))
return
self.send_response(True)
@IModule.route("dynamips.atmsw.update")
def atmsw_update(self, request):
"""
Updates a ATM switch.
Mandatory request parameters:
- id (switch identifier)
Optional request parameters:
- name (new switch name)
Response parameters:
- name if changed
:param request: JSON request
"""
# validate the request
if not self.validate_request(request, ATMSW_UPDATE_SCHEMA):
return
# get the ATM switch instance
atmsw = self.get_device_instance(request["id"], self._atm_switches)
if not atmsw:
return
response = {}
# rename the switch if requested
if "name" in request and atmsw.name != request["name"]:
try:
atmsw.name = request["name"]
response["name"] = atmsw.name
except DynamipsError as e:
self.send_custom_error(str(e))
return
self.send_response(response)
@IModule.route("dynamips.atmsw.allocate_udp_port")
def atmsw_allocate_udp_port(self, request):
"""
Allocates a UDP port in order to create an UDP NIO for an
ATM switch.
Mandatory request parameters:
- id (switch identifier)
- port_id (port identifier)
Response parameters:
- port_id (port identifier)
- lport (allocated local port)
:param request: JSON request
"""
# validate the request
if not self.validate_request(request, ATMSW_ALLOCATE_UDP_PORT_SCHEMA):
return
# get the ATM switch instance
atmsw = self.get_device_instance(request["id"], self._atm_switches)
if not atmsw:
return
try:
# allocate a new UDP port
response = self.allocate_udp_port(atmsw)
except DynamipsError as e:
self.send_custom_error(str(e))
return
response["port_id"] = request["port_id"]
self.send_response(response)
@IModule.route("dynamips.atmsw.add_nio")
def atmsw_add_nio(self, request):
"""
Adds an NIO (Network Input/Output) for an ATM switch.
Mandatory request parameters:
- id (switch identifier)
- port (port identifier)
- port_id (port identifier)
- mappings (VCs/VPs mapped to the port)
- nio (one of the following)
- type "nio_udp"
- lport (local port)
- rhost (remote host)
- rport (remote port)
- type "nio_generic_ethernet"
- ethernet_device (Ethernet device name e.g. eth0)
- type "nio_linux_ethernet"
- ethernet_device (Ethernet device name e.g. eth0)
- type "nio_tap"
- tap_device (TAP device name e.g. tap0)
- type "nio_unix"
- local_file (path to UNIX socket file)
- remote_file (path to UNIX socket file)
- type "nio_vde"
- control_file (path to VDE control file)
- local_file (path to VDE local file)
- type "nio_null"
Response parameters:
- port_id (unique port identifier)
:param request: JSON request
"""
# validate the request
if not self.validate_request(request, ATMSW_ADD_NIO_SCHEMA):
return
# get the ATM switch instance
atmsw = self.get_device_instance(request["id"], self._atm_switches)
if not atmsw:
return
port = request["port"]
mappings = request["mappings"]
try:
nio = self.create_nio(atmsw, request)
if not nio:
raise DynamipsError("Requested NIO doesn't exist: {}".format(request["nio"]))
except DynamipsError as e:
self.send_custom_error(str(e))
return
try:
atmsw.add_nio(nio, port)
pvc_entry = re.compile(r"""^([0-9]*):([0-9]*):([0-9]*)$""")
for source, destination in mappings.items():
match_source_pvc = pvc_entry.search(source)
match_destination_pvc = pvc_entry.search(destination)
if match_source_pvc and match_destination_pvc:
# add the virtual channels mapped with this port/nio
source_port, source_vpi, source_vci = map(int, match_source_pvc.group(1, 2, 3))
destination_port, destination_vpi, destination_vci = map(int, match_destination_pvc.group(1, 2, 3))
if atmsw.has_port(destination_port):
if (source_port, source_vpi, source_vci) not in atmsw.mapping and \
(destination_port, destination_vpi, destination_vci) not in atmsw.mapping:
atmsw.map_pvc(source_port, source_vpi, source_vci, destination_port, destination_vpi, destination_vci)
atmsw.map_pvc(destination_port, destination_vpi, destination_vci, source_port, source_vpi, source_vci)
else:
# add the virtual paths mapped with this port/nio
source_port, source_vpi = map(int, source.split(':'))
destination_port, destination_vpi = map(int, destination.split(':'))
if atmsw.has_port(destination_port):
if (source_port, source_vpi) not in atmsw.mapping and (destination_port, destination_vpi) not in atmsw.mapping:
atmsw.map_vp(source_port, source_vpi, destination_port, destination_vpi)
atmsw.map_vp(destination_port, destination_vpi, source_port, source_vpi)
except DynamipsError as e:
self.send_custom_error(str(e))
return
self.send_response({"port_id": request["port_id"]})
@IModule.route("dynamips.atmsw.delete_nio")
def atmsw_delete_nio(self, request):
"""
Deletes an NIO (Network Input/Output).
Mandatory request parameters:
- id (switch identifier)
- port (port identifier)
Response parameters:
- True on success
:param request: JSON request
"""
# validate the request
if not self.validate_request(request, ATMSW_DELETE_NIO_SCHEMA):
return
# get the ATM switch instance
atmsw = self.get_device_instance(request["id"], self._atm_switches)
if not atmsw:
return
port = request["port"]
try:
for source, destination in atmsw.mapping.copy().items():
if len(source) == 3 and len(destination) == 3:
# remove the virtual channels mapped with this port/nio
source_port, source_vpi, source_vci = source
destination_port, destination_vpi, destination_vci = destination
if port == source_port:
atmsw.unmap_pvc(source_port, source_vpi, source_vci, destination_port, destination_vpi, destination_vci)
atmsw.unmap_pvc(destination_port, destination_vpi, destination_vci, source_port, source_vpi, source_vci)
else:
# remove the virtual paths mapped with this port/nio
source_port, source_vpi = source
destination_port, destination_vpi = destination
if port == source_port:
atmsw.unmap_vp(source_port, source_vpi, destination_port, destination_vpi)
atmsw.unmap_vp(destination_port, destination_vpi, source_port, source_vpi)
nio = atmsw.remove_nio(port)
nio.delete()
except DynamipsError as e:
self.send_custom_error(str(e))
return
self.send_response(True)