ipydrawio/atest/ports.py

62 wiersze
1.7 KiB
Python

"""get a random port."""
# Copyright 2023 ipydrawio contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import socket
import time
import urllib.request
from robot.api import logger
def get_unused_port() -> int:
"""Get an unused port by trying to listen to any random port.
Probably could introduce race conditions if inside a tight loop.
"""
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("localhost", 0))
sock.listen(1)
port = sock.getsockname()[1]
sock.close()
return port
def wait_for_url_status(
url: str,
status_code: int,
interval_sec: float = 0.1,
attempts: int = 100,
) -> bool:
"""Attempt to fetch from the URL until, or raise an."""
response = None
for _i in range(attempts):
try:
response = urllib.request.urlopen(url)
if response.status == status_code:
break
logger.debug(response.status)
except Exception:
logger.debug(Exception)
time.sleep(interval_sec)
if not response or response.status != status_code:
raise RuntimeError(
f"{url} did return {status_code} within {interval_sec * attempts}s",
)
return True