import os
import socket
import time
import uuid
from contextlib import closing
from threading import Thread
from typing import Any
def get_ip() -> str:
r"""
Overview:
Get the ``ip(host)`` of socket
Returns:
- ip(:obj:`str`): The corresponding ip
"""
# beware: return 127.0.0.1 on some slurm nodes
myname = socket.getfqdn(socket.gethostname())
myaddr = socket.gethostbyname(myname)
return myaddr
def get_pid() -> int:
r"""
Overview:
``os.getpid``
"""
return os.getpid()
def get_task_uid() -> str:
r"""
Overview:
Get the slurm ``job_id``, ``pid`` and ``uid``
"""
return '{}_{}'.format(str(uuid.uuid4()), str(time.time())[-6:])
[docs]class PropagatingThread(Thread):
"""
Overview:
Subclass of Thread that propagates execution exception in the thread to the caller
Interface:
``run``, ``join``
Examples:
>>> def func():
>>> raise Exception()
>>> t = PropagatingThread(target=func, args=())
>>> t.start()
>>> t.join()
"""
[docs] def run(self) -> None:
self.exc = None
try:
self.ret = self._target(*self._args, **self._kwargs)
except Exception as e:
self.exc = e
[docs] def join(self) -> Any:
super(PropagatingThread, self).join()
if self.exc:
raise RuntimeError('Exception in thread({})'.format(id(self))) from self.exc
return self.ret
def find_free_port(host: str) -> int:
r"""
Overview:
Look up the free port list and return one
"""
with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as s:
s.bind(('', 0))
return s.getsockname()[1]