mirror of
https://github.com/GNS3/gns3-server
synced 2024-10-10 09:58:55 +00:00
125 lines
4.6 KiB
Python
125 lines
4.6 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import aiohttp
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from .link import Link
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class UDPLink(Link):
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def __init__(self, project):
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super().__init__(project)
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self._capture_vm = None
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@asyncio.coroutine
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def create(self):
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"""
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Create the link on the VMs
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"""
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vm1 = self._vms[0]["vm"]
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adapter_number1 = self._vms[0]["adapter_number"]
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port_number1 = self._vms[0]["port_number"]
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vm2 = self._vms[1]["vm"]
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adapter_number2 = self._vms[1]["adapter_number"]
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port_number2 = self._vms[1]["port_number"]
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# Reserve a UDP port on both side
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response = yield from vm1.compute.post("/projects/{}/ports/udp".format(self._project.id))
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self._vm1_port = response.json["udp_port"]
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response = yield from vm2.compute.post("/projects/{}/ports/udp".format(self._project.id))
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self._vm2_port = response.json["udp_port"]
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# Create the tunnel on both side
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data = {
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"lport": self._vm1_port,
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"rhost": vm2.compute.host,
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"rport": self._vm2_port,
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"type": "nio_udp"
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}
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yield from vm1.post("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number1, port_number=port_number1), data=data)
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data = {
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"lport": self._vm2_port,
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"rhost": vm1.compute.host,
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"rport": self._vm1_port,
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"type": "nio_udp"
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}
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yield from vm2.post("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number2, port_number=port_number2), data=data)
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@asyncio.coroutine
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def delete(self):
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"""
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Delete the link and free the ressources
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"""
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vm1 = self._vms[0]["vm"]
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adapter_number1 = self._vms[0]["adapter_number"]
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port_number1 = self._vms[0]["port_number"]
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vm2 = self._vms[1]["vm"]
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adapter_number2 = self._vms[1]["adapter_number"]
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port_number2 = self._vms[1]["port_number"]
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yield from vm1.delete("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number1, port_number=port_number1))
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yield from vm2.delete("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number2, port_number=port_number2))
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@asyncio.coroutine
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def start_capture(self, data_link_type="DLT_EN10MB"):
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"""
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Start capture on a link
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"""
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self._capture_vm = self._choose_capture_side()
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data = {
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"capture_file_name": self.capture_file_name(),
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"data_link_type": data_link_type
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}
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yield from self._capture_vm["vm"].post("/adapters/{adapter_number}/ports/{port_number}/start_capture".format(adapter_number=self._capture_vm["adapter_number"], port_number=self._capture_vm["port_number"]), data=data)
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self._capturing = True
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@asyncio.coroutine
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def stop_capture(self):
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"""
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Stop capture on a link
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"""
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if self._capture_vm:
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yield from self._capture_vm["vm"].post("/adapters/{adapter_number}/ports/{port_number}/stop_capture".format(adapter_number=self._capture_vm["adapter_number"], port_number=self._capture_vm["port_number"]))
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self._capture_vm = None
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self._capturing = False
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def _choose_capture_side(self):
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"""
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Run capture on the best candidate.
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The ideal candidate is a node who support capture on controller
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server
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:returns: VM where the capture should run
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"""
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# For saving bandwith we use the local node first
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for vm in self._vms:
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if vm["vm"].compute.id == "local" and vm["vm"].vm_type not in ["qemu", "vpcs"]:
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return vm
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for vm in self._vms:
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if vm["vm"].vm_type not in ["qemu", "vpcs"]:
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return vm
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raise aiohttp.web.HTTPConflict(text="Capture is not supported for this link")
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