async def test_scp(event_loop):
# ensure that asyncio.subprocess will work;
try:
asyncio.get_child_watcher().attach_loop(event_loop)
except RuntimeError:
pytest.skip('test_scp will always fail outside of MainThread')
async with base.CleanModel() as model:
await model.add_machine()
await asyncio.wait_for(
model.block_until(lambda: model.machines),
timeout=240)
machine = model.machines['0']
await asyncio.wait_for(
model.block_until(lambda: (machine.status == 'running' and
machine.agent_status == 'started')),
timeout=480)
with NamedTemporaryFile() as f:
f.write(b'testcontents')
f.flush()
await machine.scp_to(f.name, 'testfile', scp_opts='-p')
with NamedTemporaryFile() as f:
await machine.scp_from('testfile', f.name, scp_opts='-p')
assert f.read() == b'testcontents'
def wrapper(*args, **kwargs):
with loop_context() as loop:
injector = Injector(loop=loop,
fake_future=lambda: fake_future)
asyncio.get_child_watcher().attach_loop(loop)
asyncio.set_event_loop(loop)
loop.run_until_complete(injector.call(f, *args, **kwargs))
def __init__(self,
protocol_cls,
loop=None,
max_workers=2,
sync_kind=TextDocumentSyncKind.INCREMENTAL):
if not issubclass(protocol_cls, asyncio.Protocol):
raise TypeError(
'Protocol class should be subclass of asyncio.Protocol')
self._max_workers = max_workers
self._server = None
self._stop_event = None
self._thread_pool = None
self._thread_pool_executor = None
self.sync_kind = sync_kind
if IS_WIN:
asyncio.set_event_loop(asyncio.ProactorEventLoop())
else:
asyncio.set_event_loop(asyncio.SelectorEventLoop())
self.loop = loop or asyncio.get_event_loop()
try:
asyncio.get_child_watcher().attach_loop(self.loop)
except NotImplementedError:
pass
self.lsp = protocol_cls(self)
def __init__(self, builder, *args, **kwargs):
""" Build the ThreadManager.
:param builder: The API function to use
"""
self._loop = None
self.managed_obj = None
self.bridged_obj = None
self._sync_managed_obj = None
is_running = threading.Event()
self._is_running = is_running
# TODO: remove this if we switch to python 3.8
# https://docs.python.org/3/library/asyncio-subprocess.html#subprocess-and-threads # noqa
# On windows, the event loop and system interface is different and
# this won't work.
try:
asyncio.get_child_watcher()
except NotImplementedError:
pass
blocking = not kwargs.pop('threadmanager_nonblocking', False)
target = object.__getattribute__(self, '_build_and_start_loop')
thread = threading.Thread(target=target,
name='ManagedThread',
args=(builder, *args),
kwargs=kwargs,
daemon=True)
self._thread = thread
thread.start()
if blocking:
object.__getattribute__(self, 'managed_thread_ready_blocking')()
async def test_scp(event_loop):
# ensure that asyncio.subprocess will work;
try:
asyncio.get_child_watcher().attach_loop(event_loop)
except RuntimeError:
pytest.skip('test_scp will always fail outside of MainThread')
async with base.CleanModel() as model:
app = await model.deploy('ubuntu')
await asyncio.wait_for(model.block_until(lambda: app.units),
timeout=60)
unit = app.units[0]
await asyncio.wait_for(model.block_until(lambda: unit.machine),
timeout=60)
machine = unit.machine
await asyncio.wait_for(
model.block_until(lambda: (machine.status == 'running' and machine.
agent_status == 'started')),
timeout=480)
with NamedTemporaryFile() as f:
f.write(b'testcontents')
f.flush()
await unit.scp_to(f.name, 'testfile')
with NamedTemporaryFile() as f:
await unit.scp_from('testfile', f.name)
assert f.read() == b'testcontents'
def setup_asyncio(self):
''' this ensures that the child process watcher is running on
the main thread, which is necessary for subprocess to be waited
for, as python can only catch SIG_CHLD on the main thread.
additionally, an event loop must be executed on the main thread
during waiting.
'''
asyncio.get_child_watcher()
def ctags(self):
asyncio.get_child_watcher()
self.proteome.proteome_start()
self.pros.foreach(lambda a: self.proteome.pro_add([a.ident]))
self._await()
self.proteome.pro_save()
self._await()
later(lambda: self.pros.foreach(lambda a: a.tag_file.should.exist))
def setUp(self): # pylint: disable=invalid-name
"""Setup things to be run when tests are started.
Also seems to require a child watcher attached to the loop when run
from pytest.
"""
self.hass = get_test_home_assistant()
asyncio.get_child_watcher().attach_loop(self.hass.loop)
async def __aenter__(self):
asyncio.get_child_watcher().attach_loop(self.loop)
self.proc = await asyncio.create_subprocess_exec(*self.args,
loop=self.loop)
logger.debug('Started, waiting for debug port...')
await asyncio.sleep(1) # Not sure why this is necessary...
await wait_for_port(self.host, self.port, loop=self.loop)
logger.debug('Debug port available.')
def setUp(self): # pylint: disable=invalid-name
"""Set up things to be run when tests are started.
Also seems to require a child watcher attached to the loop when run
from pytest.
"""
self.hass = get_test_home_assistant()
asyncio.get_child_watcher().attach_loop(self.hass.loop)
def __init__(self):
print("Initialisation of the scheduler manager")
self.scheduler = BackgroundScheduler()
# create the async loop in the main thread
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(self.loop) # bind event loop to current thread
asyncio.get_child_watcher().attach_loop(self.loop)
def thread_check_notification(self):
asyncio.set_event_loop(self.scrapper.loop)
asyncio.get_child_watcher().attach_loop(self.scrapper.loop)
thread = threading.Thread(
target=lambda: self.scrapper.loop.run_until_complete(
self.loop_check_notification()),
daemon=True)
thread.start()
def main():
servers = ['www.google.com']*5
event_loop = asyncio.get_event_loop()
asyncio.get_child_watcher()
pool = TaskPool(event_loop, ASYNCIO_TASK_POOL)
thread = Thread(target=event_loop.run_until_complete, args=(pool.join(),))
thread.start()
for server in servers:
pool.submit(ConsoleHealthCheck(server).run_health_check())
async def _run_subprocess(
command: List[str],
stdout_handler: Optional[RunSubprocessHandler] = None,
stderr_handler: Optional[Callable[[str], Coroutine]] = None,
env: Optional[dict] = None,
cwd: Optional[str] = None,
wait: bool = True,
) -> asyncio.subprocess.Process:
"""
Run a command as a subprocess and handle stdin and stderr output line-by-line.
:param command: The command to run as a subprocess.
:param stdout_handler: A function to handle stdout lines.
:param stderr_handler: A function to handle stderr lines.
:param env: Environment variables to set for the subprocess.
:param cwd: Current working directory for the subprocess.
:param wait: Flag indicating to wait for the subprocess to finish before returning.
"""
logger.info(f"Running command in subprocess: {' '.join(command)}")
# Ensure the asyncio child watcher has a reference to the running loop, prevents `process.wait` from hanging.
asyncio.get_child_watcher().attach_loop(asyncio.get_running_loop())
stdout = asyncio.subprocess.PIPE if stdout_handler else asyncio.subprocess.DEVNULL
if stderr_handler:
async def _stderr_handler(line):
await stderr_handler(line)
logger.info(f"STDERR: {line.rstrip()}")
else:
async def _stderr_handler(line):
logger.info(f"STDERR: {line.rstrip()}")
process = await asyncio.create_subprocess_exec(
*(str(arg) for arg in command),
stdout=stdout,
stderr=asyncio.subprocess.PIPE,
env=env,
cwd=cwd)
_watch_subprocess = asyncio.create_task(
watch_subprocess(process, stdout_handler, _stderr_handler))
@hooks.on_failure
def _terminate_process():
if process.returncode is None:
process.terminate()
_watch_subprocess.cancel()
if wait:
await process.wait()
return process
def init():
global client
asyncio.get_child_watcher() # uh this function sound weird
loop = asyncio.get_event_loop()
loop.create_task(start())
thread = threading.Thread(target=run_it_forever, args=(loop, ))
thread.start()
def init():
asyncio.get_child_watcher()
loop = asyncio.get_event_loop()
loop.create_task(start_client())
thread_client = threading.Thread(target=start_client_loop, args=(loop, ))
thread_client.start()
thread_chain = threading.Thread(target=start_chain_ping, args=(loop, ))
thread_chain.start()
def run(background=False):
asyncio.get_child_watcher().attach_loop(loop)
daemon = ExtProgramRunner()
loop.call_soon(daemon.start, loop)
# start main event loop
if background:
executor = None
loop.run_in_executor(executor, loop.run_forever)
else:
loop.run_forever()
def _setup_eventloop(self):
"""
Sets up a new eventloop as the current one according to the OS.
"""
if os.name == 'nt':
self.eventloop = asyncio.ProactorEventLoop()
else:
self.eventloop = asyncio.new_event_loop()
asyncio.set_event_loop(self.eventloop)
if os.name == 'posix' and isinstance(threading.current_thread(), threading._MainThread):
asyncio.get_child_watcher().attach_loop(self.eventloop)
def _setup_eventloop(self):
"""
Sets up a new eventloop as the current one according to the OS.
"""
if os.name == 'nt':
self.eventloop = asyncio.ProactorEventLoop()
else:
self.eventloop = asyncio.new_event_loop()
asyncio.set_event_loop(self.eventloop)
if os.name == 'posix' and isinstance(threading.current_thread(), threading._MainThread):
asyncio.get_child_watcher().attach_loop(self.eventloop)
def run_async_process(cmd, out, err, **kwargs):
if os.name == 'nt':
loop = asyncio.ProactorEventLoop() # for subprocess' pipes on Windows
asyncio.set_event_loop(loop)
else:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
asyncio.get_child_watcher().attach_loop(loop)
loop = asyncio.get_event_loop()
rc, odata, edata = loop.run_until_complete(read_and_store(cmd, out, err, **kwargs))
return rc, odata, edata
def start_process(self) -> mp.Process:
"""
Start this executor in a new process
"""
def _start():
self._init_process()
self.start()
self._runner.join()
asyncio.get_child_watcher()
proc = mp.Process(target=_start)
proc.start()
return proc
def __init__(self, *args, **kwargs):
if sys.platform == "win32":
self.loop = kwargs.pop('loop', asyncio.ProactorEventLoop())
asyncio.set_event_loop(self.loop)
else:
self.loop = kwargs.pop('loop', asyncio.get_event_loop())
asyncio.get_child_watcher().attach_loop(self.loop)
self.token = kwargs.pop("token")
command_prefix = kwargs.pop('command_prefix',
commands.when_mentioned_or('+'))
max_messages = kwargs.pop('max_messages', 5000)
super().__init__(command_prefix=command_prefix, *args, **kwargs)
def test_run_func(self):
self.rule.execute_subprocess(
self.set_ret, sys.executable, '-c', 'import datetime; print(datetime.datetime.now())', capture_output=True
)
# Test this call from __main__ to create thread save process watchers
if sys.platform != "win32":
asyncio.get_child_watcher()
asyncio.get_event_loop().run_until_complete(asyncio.gather(asyncio.sleep(0.5)))
self.assertEqual(self.ret.returncode, 0)
self.assertTrue(self.ret.stdout.startswith('20'))
def main():
asyncio.get_child_watcher()
api_thread = threading.Thread(target=run_api)
api_thread.daemon = True
api_thread.start()
game_thread = threading.Thread(target=run_game_loop)
game_thread.daemon = True
game_thread.start()
rtm_client = slack.RTMClient(token=slack_token)
rtm_client.start()
async def _cli_cmnd(self, *args):
cmnd_args = [
self.cli_bin, '-datadir={}'.format(self.data_path), '-regtest',
'-rpcuser=rpcuser', '-rpcpassword=rpcpassword', '-rpcport=50001'
] + list(args)
self.log.info(' '.join(cmnd_args))
loop = asyncio.get_event_loop()
asyncio.get_child_watcher().attach_loop(loop)
process = await asyncio.create_subprocess_exec(
*cmnd_args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
out, _ = await process.communicate()
self.log.info(out.decode().strip())
return out.decode().strip()
async def start(self):
assert self.ensure()
self.data_path = tempfile.mkdtemp()
loop = asyncio.get_event_loop()
asyncio.get_child_watcher().attach_loop(loop)
command = (self.daemon_bin, '-datadir={}'.format(self.data_path),
'-printtoconsole', '-regtest', '-server', '-txindex',
'-rpcuser=rpcuser', '-rpcpassword=rpcpassword',
'-rpcport=50001')
self.log.info(' '.join(command))
self.transport, self.protocol = await loop.subprocess_exec(
lambda: BlockchainProcess(self.log), *command)
await self.protocol.ready.wait()
def __init__(self):
self.loop = asyncio.get_event_loop()
executor_opts = {'max_workers': None}
if sys.version_info[:2] >= (3, 6):
executor_opts['thread_name_prefix'] = 'SyncWorker'
self.executor = ThreadPoolExecutor(**executor_opts)
self.loop.set_default_executor(self.executor)
self.loop.set_exception_handler(async_loop_exception_handler)
if asyncio.get_child_watcher()._loop is not self.loop:
asyncio.get_child_watcher().attach_loop(self.loop)
async def server_main_logwrapper(loop, pidx, _args):
setproctitle(f"backend.ai: storage-proxy worker-{pidx}")
try:
asyncio.get_child_watcher()
except (AttributeError, NotImplementedError):
pass
log_endpoint = _args[1]
logger = Logger(_args[0]["logging"],
is_master=False,
log_endpoint=log_endpoint)
with logger:
async with server_main(loop, pidx, _args):
yield
def testPolicyWrapperRecursion(self): initial_policy = asyncio.get_event_loop_policy() if not isinstance(initial_policy, DefaultEventLoopPolicy): asyncio.set_event_loop_policy(DefaultEventLoopPolicy()) try: with self.assertRaises(NotImplementedError): asyncio.get_event_loop() with self.assertRaises(NotImplementedError): asyncio.get_child_watcher() finally: asyncio.set_event_loop_policy(initial_policy)
def _log_agents(self, tokens):
asyncio.get_child_watcher()
i = 0
for el in tokens:
self.clients.append(
MyDiscordAgent(users_under_control, log_en=True, human=False))
self.clients_loop.append(asyncio.get_event_loop())
self.clients_loop[i].create_task(
self._start_agent_actions(self.clients[i], el))
self.clients_thread.append(
threading.Thread(target=self._run_it_forever,
args=(self.clients_loop[i], )))
self.clients_thread[i].start()
i += 1
sleep(0.2)
def get_event_loop():
# https://stackoverflow.com/questions/44684898/python-asyncio-running-subprocess-exec-on-a-worker-thread
asyncio.get_child_watcher()
loop = asyncio.get_event_loop()
if loop.is_closed():
print('opening new loop')
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
def debug_exception_handler(loop, context):
print(context)
loop.set_debug(True)
loop.set_exception_handler(debug_exception_handler)
return loop
def run(args):
import os
if os.environ.get("PYTHONASYNCIODEBUG"):
import logging
logging.basicConfig(level=logging.DEBUG)
import warnings
warnings.simplefilter('default')
import asyncio
loop = asyncio.get_event_loop()
asyncio.get_child_watcher()
from url_sources.capture_phantom import CaptureDispatcher
loop.run_until_complete(CaptureDispatcher(args).run())
loop.close()
def __execute(cmd, stdout_cb, stderr_cb):
try:
loop = asyncio.get_event_loop()
except RuntimeError:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
asyncio.get_child_watcher().attach_loop(loop)
rc = loop.run_until_complete(
ShellExecutor._stream_subprocess(
cmd,
stdout_cb,
stderr_cb,
))
print("Complete executing command. Returning from __execute")
return rc
async def start(self):
assert self.ensure()
self.data_path = tempfile.mkdtemp()
loop = asyncio.get_event_loop()
asyncio.get_child_watcher().attach_loop(loop)
command = [
self.daemon_bin, f'-datadir={self.data_path}', '-printtoconsole',
'-regtest', '-server', '-txindex', f'-rpcuser={self.rpcuser}',
f'-rpcpassword={self.rpcpassword}', f'-rpcport={self.rpcport}',
f'-port={self.peerport}'
]
self.log.info(' '.join(command))
self.transport, self.protocol = await loop.subprocess_exec(
BlockchainProcess, *command)
await self.protocol.ready.wait()
def run(args):
import os
if os.environ.get("PYTHONASYNCIODEBUG"):
import logging
logging.basicConfig(level=logging.DEBUG)
import warnings
warnings.simplefilter('default')
import asyncio
loop = asyncio.get_event_loop()
asyncio.get_child_watcher()
from url_sources.capture_phantom import CaptureDispatcher
loop.run_until_complete(CaptureDispatcher(args).run())
loop.close()
def chThread(self):
bot = CatchHelperBot(self._pause_time,
self._include_play,
self._include_pause,
self._include_stop,
self._device_ids,
self._mad,
description="Bot to restart the PoGo app")
asyncio.get_child_watcher()
loop = asyncio.get_event_loop()
sch_worker = Thread(name="ShinyCatchHelper",
target=self.run_CatchHelper_forever,
args=(loop, bot))
sch_worker.daemon = True
sch_worker.start()
def testPolicyWrapperRecursion(self):
if asyncio is None:
self.skipTest('asyncio is not available')
initial_policy = asyncio.get_event_loop_policy()
if not isinstance(initial_policy, DefaultEventLoopPolicy):
asyncio.set_event_loop_policy(DefaultEventLoopPolicy())
try:
with self.assertRaises(NotImplementedError):
asyncio.get_event_loop()
with self.assertRaises(NotImplementedError):
asyncio.get_child_watcher()
finally:
asyncio.set_event_loop_policy(initial_policy)
def test_run_func_no_cap(self):
self.rule.execute_subprocess(
self.set_ret,
sys.executable,
'-c',
'import datetime; print(datetime.datetime.now())',
capture_output=False)
# Test this call from __main__ to create thread save process watchers
if sys.platform != "win32":
asyncio.get_child_watcher()
loop.run_until_complete(asyncio.gather(asyncio.sleep(0.5)))
self.assertEqual(self.ret.returncode, 0)
self.assertEqual(self.ret.stdout, None)
self.assertEqual(self.ret.stderr, None)
def _setup_eventloop(self):
"""Sets up a new eventloop as the current one according to the OS."""
if os.name == "nt":
self.eventloop = asyncio.ProactorEventLoop()
else:
try:
self.eventloop = asyncio.get_event_loop()
except RuntimeError:
if threading.current_thread() != threading.main_thread():
# Ran not in main thread, make a new eventloop
self.eventloop = asyncio.new_event_loop()
asyncio.set_event_loop(self.eventloop)
else:
raise
if os.name == "posix" and isinstance(threading.current_thread(), threading._MainThread):
asyncio.get_child_watcher().attach_loop(self.eventloop)
def wss_server():
ws_address = f"wss://{HOSTNAME}:{WSS_PORT}/WebSocket"
loop = asyncio.new_event_loop()
asyncio.get_child_watcher()._loop = loop
start_server = websockets.serve(handler, "localhost", WSS_PORT, loop=loop)
loop.run_until_complete(start_server)
loop.run_forever()
def _attach_pid(self, newpid):
"""
Attach this process to a new PID, creating a condition which will be used by
the child watcher to determine when the PID has exited.
"""
with asyncio.get_child_watcher() as watcher:
watcher.add_child_handler(newpid, self._child_watcher_callback)
self._exit_event = asyncio.Event()
def __init__(self, *args, **kwargs):
self.loop = kwargs.pop('loop', asyncio.get_event_loop())
asyncio.get_child_watcher().attach_loop(self.loop)
self.dev_mode = kwargs.pop('dev_mode', False)
self.token = os.getenv('bot_token') if not self.dev_mode else os.getenv('bot_beta_token')
self.self_bot = kwargs.pop('self_bot', False)
if self.self_bot:
self.token = os.getenv('notsosuper_token')
shard_id = kwargs.get('shard_id', 0)
command_prefix = kwargs.pop('command_prefix', commands.when_mentioned_or('.'))
init_logging(shard_id, self)
super().__init__(command_prefix=command_prefix, *args, **kwargs)
self.remove_command('help')
init_funcs(self)
self.owner = None
self.start_time = time.time()
self.own_task = None
self.last_message = None
self.command_messages = {}
def _asyncio_child_watcher(self): """ Portage internals use this as a layer of indirection for asyncio.get_child_watcher(), in order to support versions of python where asyncio is not available. @rtype: asyncio.AbstractChildWatcher @return: the internal event loop's AbstractChildWatcher interface """ return _real_asyncio.get_child_watcher()
def main():
_, dbname, analyzer, runs = sys.argv
runs = runs.split(",")
loop = asyncio.get_event_loop()
# child watcher must be initialized before anything creates threads
asyncio.get_child_watcher()
with async_pgconn(dbname, loop=loop) as db, \
aiohttp.ClientSession(loop=loop) as http_client, \
rate_limiter(10, loop=loop) as wb_rate, \
rate_limiter(4096, loop=loop) as gt_rate, \
TopicAnalyzer(analyzer, loop=loop) as topic_analyzer:
wayback = WaybackMachine(http_client, wb_rate)
gtrans = GoogleTranslate(http_client, gt_rate)
session = HistoryRetrievalSession(
runs, db, wayback, gtrans, topic_analyzer, loop)
loop.run_until_complete(loop.create_task(session.get_page_histories()))
def main():
p = ArgumentParser()
p.add_argument('codepath', help='path to code root', nargs='?', default='~/code')
p.add_argument('mainbranch', nargs='?',
default='master', help='name of your main branch')
P = p.parse_args()
if os.name == 'nt':
loop = asyncio.ProactorEventLoop()
asyncio.set_event_loop(loop)
else:
loop = asyncio.new_event_loop()
# necessary since we're returning from subprocess
# for other types of applications, asyncio.run() does this implicitly.
asyncio.get_child_watcher().attach_loop(loop)
branch = loop.run_until_complete(findbranch(P.mainbranch, P.codepath))
for b in branch:
print(b[0], ' => ', b[1])
def test_close_dont_kill_finished(self):
async def kill_running():
create = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
*PROGRAM_BLOCKED)
transport, protocol = await create
proc = transport.get_extra_info('subprocess')
# kill the process (but asyncio is not notified immediately)
proc.kill()
proc.wait()
proc.kill = mock.Mock()
proc_returncode = proc.poll()
transport_returncode = transport.get_returncode()
transport.close()
return (proc_returncode, transport_returncode, proc.kill.called)
# Ignore "Unknown child process pid ..." log of SafeChildWatcher,
# emitted because the test already consumes the exit status:
# proc.wait()
with test_utils.disable_logger():
result = self.loop.run_until_complete(kill_running())
test_utils.run_briefly(self.loop)
proc_returncode, transport_return_code, killed = result
self.assertIsNotNone(proc_returncode)
self.assertIsNone(transport_return_code)
# transport.close() must not kill the process if it finished, even if
# the transport was not notified yet
self.assertFalse(killed)
# Unlike SafeChildWatcher, FastChildWatcher does not pop the
# callbacks if waitpid() is called elsewhere. Let's clear them
# manually to avoid a warning when the watcher is detached.
if (sys.platform != 'win32' and
isinstance(self, SubprocessFastWatcherTests)):
asyncio.get_child_watcher()._callbacks.clear()
def setup(self):
super().setup()
asyncio.get_child_watcher()
def _connect_child(self, argv):
if os.name != 'nt':
self._child_watcher = asyncio.get_child_watcher()
self._child_watcher.attach_loop(self._loop)
coroutine = self._loop.subprocess_exec(self._fact, *argv)
self._loop.run_until_complete(coroutine)
loop = asyncio.get_event_loop()
async def sleep1():
while True:
await asyncio.sleep(.2)
print('yes')
_cmd = """
python -c "
import time
while True:
print('more')
time.sleep(1)
"
"""
args = shlex.split(_cmd)
async def sleep2():
process = await asyncio.create_subprocess_exec(*args, preexec_fn=os.setpgrp)
asyncio.get_child_watcher().attach_loop(loop)
# asyncio.ensure_future(sleep2())
loop.call_soon(asyncio.ensure_future, sleep2())
# blocks
# loop.run_forever()
executor = concurrent.futures.ThreadPoolExecutor()
loop.run_in_executor(None, loop.run_forever)
print('more')
# schedule tasks for execution
asyncio.ensure_future(self.run_cmd_forever(_cmd))
async def run_cmd_forever(self, cmd):
print('run cmd forever start')
args = shlex.split(cmd)
while self.run: # for now do not run like this, just let it die
process = await asyncio.create_subprocess_exec(*args)
self.processes.append(process)
exit_code = await process.wait()
for idx, p in enumerate(self.processes):
if process.pid == p.pid:
self.processes.pop(idx)
print("External program '{}' exited with exit code {}, relaunching".format(cmd, exit_code))
asyncio.get_child_watcher()
loop = get_event_loop()
def cancel_all():
# THIS DOES NOT KILL THE SHELL STUFF! NEED .kill on procs for that!
for x in asyncio.Task.all_tasks():
if x == asyncio.Task.current_task():
print('not cancel current task')
else:
loop.call_soon_threadsafe(x.cancel)
async def bleep(x):
while True:
await asyncio.sleep(1)
print('bleep', x)
def start_shell_bleeps():
# you need the child watcher somewhere like here? not sure. it is to do with the shell exec stuff
# IMPORTANT IMPORTANT IMPORANT !!!! MUST BE HERE THE LINE BELOW!
asyncio.get_child_watcher().attach_loop(loop)
loop.call_soon_threadsafe(asyncio.ensure_future, shell_bleep())
