morethantext-web/tests/step_defs/server.py

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"""Fixture for setting up a single server."""
from asyncio import create_subprocess_exec, get_event_loop, sleep
from json import dumps
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from pathlib import Path
from random import choices
from shutil import rmtree
from socket import gethostname, gethostbyname, socket
from string import ascii_lowercase
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class Server:
"""Setup a single server."""
def __init__(self):
"""Initialization of a server."""
self.datadir = Path.cwd().joinpath(
"tests", "data", "".join(choices(ascii_lowercase, k=5))
)
self.datadir.mkdir(parents=True)
self.settings = {}
self.use_config = True
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self.process = None
self.loop = get_event_loop()
@property
def base_url(self):
"""Returns the base URL for the server."""
address = "127.0.0.1"
port = 9090
if "address" in self.settings:
address = self.settings["address"]
if "port" in self.settings:
port = self.settings["port"]
return f"{address}:{port}"
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async def __start(self):
"""async start of the server."""
env = None
if self.settings:
if self.use_config:
with open(
self.datadir.joinpath("morethantext.json"), "w", encoding="utf-8"
) as cfg:
cfg.write(dumps(self.settings))
else:
env = {}
for key, value in self.settings.items():
env[f"MTT_{key.upper()}"] = str(value)
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self.process = await create_subprocess_exec(
Path.cwd().joinpath("target", "release", "morethantext_web"),
env=env,
cwd=self.datadir,
)
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await sleep(1)
async def __stop(self):
"""async stop of the server."""
if self.process is not None and self.process.returncode is None:
self.process.terminate()
await self.process.wait()
def start(self):
"""Start the server."""
self.loop.run_until_complete(self.__start())
def stop(self):
"""Stop the server."""
self.loop.run_until_complete(self.__stop())
def destroy(self):
"""Removes the server instance."""
self.stop()
rmtree(self.datadir, ignore_errors=True)
def set_safe_port(self):
"""Set the server port to something not being used."""
port = 9090
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address = self.base_url.split(":")[0]
while port == 9090:
sock = socket()
sock.bind((address, 0))
port = sock.getsockname()[1]
sock.close()
self.settings["port"] = port
def set_to_host_ip(self):
"""Set the server to use something other than localhost."""
hostname = gethostname()
self.settings["address"] = gethostbyname(hostname)
self.set_safe_port()