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mirror of https://gitlab.nic.cz/labs/bird.git synced 2024-12-23 02:01:55 +00:00
bird/python/BIRD/Test.py
2024-07-13 17:38:07 +02:00

206 lines
6.0 KiB
Python

import asyncio
import ipaddress
import jinja2
import os
import pathlib
import sys
sys.path.insert(0, "/home/maria/flock")
from flock.Hypervisor import Hypervisor
from flock.Machine import Machine
from .CLI import CLI, Transport
class MinimalistTransport(Transport):
def __init__(self, socket, machine):
self.sock = socket
self.machine = machine
async def send_cmd(self, *args):
return await self.sock.send_cmd("run_in", self.machine, "./birdc", "-l", *args)
class BIRDBinDir:
index = {}
def __init__(self, path):
self.path = path
f = [ "bird", "birdc", "birdcl", ]
self.files = { k: None for k in f }
self.mod = { k: None for k in f }
self.loaded = False
@classmethod
def get(cls, where):
w = pathlib.Path(where).absolute()
try:
return cls.index[s := str(w)]
except KeyError:
cls.index[s] = (b := cls(w))
return b
def load(self):
for bn,v in self.files.items():
if v is None:
with open(self.path / bn, "rb") as b:
self.files[bn] = b.read()
self.mod[bn] = (self.path / bn).stat().st_mode
self.loaded = True
def copy(self, target):
if not self.loaded:
self.load()
for bn,v in self.files.items():
if v is not None:
with open(target / bn, "wb") as b:
b.write(v)
(target / bn).chmod(self.mod[bn])
def cleanup(self, target):
for bn in self.files:
(target / bn).unlink()
default_bindir = BIRDBinDir.get(".")
class BIRDInstance(CLI):
def __init__(self, mach: Machine, bindir=None, conf=None):
self.mach = mach
self.workdir = self.mach.workdir
self.bindir = BIRDBinDir.get(bindir) if bindir is not None else default_bindir
self.conf = conf if conf is not None else f"bird_{mach.name}.conf"
super().__init__(
transport=MinimalistTransport(
socket=mach.hypervisor.control_socket,
machine=self.mach.name
)
)
async def start(self, test):
self.bindir.copy(self.workdir)
with (open(self.conf, "r") as s, open(self.workdir / "bird.conf", "w") as f):
f.write(jinja2.Environment().from_string(s.read()).render(t=test))
await test.hcom("run_in", self.mach.name, "./bird", "-l")
async def cleanup(self):
# Send down command and wait for BIRD to actually finish
await self.down()
while (self.workdir / "bird.ctl").exists():
await asyncio.sleep(0.1)
# Remove known files
for f in ("bird.conf", "bird.log"):
(self.workdir / f).unlink()
self.bindir.cleanup(self.workdir)
class Test:
ipv6_prefix = ipaddress.ip_network("2001:db8::/32")
ipv4_prefix = ipaddress.ip_network("192.0.2.0/24")
ipv6_link_pxlen = 64
ipv4_link_pxlen = 28
# 198.51.100.0/24, 203.0.113.0/24
def __init__(self, name):
self.name = name
self.hypervisor = Hypervisor(name)
self.machine_index = {}
self._started = None
self._starting = False
self.ipv6_pxgen = self.ipv6_prefix.subnets(new_prefix=self.ipv6_link_pxlen)
self.ipv4_pxgen = self.ipv4_prefix.subnets(new_prefix=self.ipv4_link_pxlen)
async def hcom(self, *args):
if self._started is None:
self._started = asyncio.Future()
if self._started.done():
return await self.hypervisor.control_socket.send_cmd(*args)
if self._starting:
await self._started
else:
self._starting = True
await self.hypervisor.prepare()
os.symlink(pathlib.Path("bgp-secondary.log").absolute(), self.hypervisor.basedir / "flock.log")
await self.hypervisor.start()
self._started.set_result(True)
self._starting = False
return await self.hypervisor.control_socket.send_cmd_early(*args)
async def machines(self, *names, t: type):
for n in names:
if n in self.machine_index:
raise Exception(f"Machine {n} duplicate")
info = await asyncio.gather(*[
self.hcom("machine", name, { "type": "minimalist" })
for name in names
])
inst = [
t(mach=Machine.new(
name=n,
hypervisor=self.hypervisor,
**i
),
) for n,i in zip(names, info)
]
for n,i in zip(names, inst):
self.machine_index[n] = i
return inst
async def link(self, name, *machines):
match len(machines):
case 0:
raise Exception("Link with no machines? HOW?!")
case 1:
raise NotImplementedError("dummy link")
case 2:
linfo = await self.hcom("link", name, {
"machines": { m: { "name": name } for m in machines },
"ipv6": str(next(self.ipv6_pxgen)),
"ipv4": str(next(self.ipv4_pxgen)),
})
for m in machines:
for i in ("ipv4", "ipv6"):
linfo[m][i] = ipaddress.ip_interface(linfo[m][i])
return linfo
case _:
raise NotImplementedError("virtual bridge")
async def start(self):
await asyncio.gather(*[ v.start(test=self) for v in self.machine_index.values() ])
async def cleanup(self):
await asyncio.gather(*[ v.cleanup() for v in self.machine_index.values() ])
if __name__ == "__main__":
name = sys.argv[1]
p = (pathlib.Path(__file__).parent.parent.parent / "flock" / name).absolute()
sys.path.insert(0, str(p))
if "MAKEFLAGS" in os.environ:
print(os.environ["MAKEFLAGS"])
import test
os.chdir(p)
asyncio.run(test.ThisTest(name).run())