generated from daniil-berg/boilerplate-py
huge update:
introduced meta tasks which are used by `_map()`; introduced task groups; ending with `gather_and_close()` now; pool unittests rewritten accordingly; two new helper classes
This commit is contained in:
parent
4994135062
commit
c63f079da4
12
README.md
12
README.md
@ -15,11 +15,19 @@ If you need control over a task pool at runtime, you can launch an asynchronous
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## Usage
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Generally speaking, a task is added to a pool by providing it with a coroutine function reference as well as the arguments for that function. Here is what that could look like in the most simplified form:
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```python
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from asyncio_taskpool import SimpleTaskPool
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...
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async def work(foo, bar): ...
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...
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async def main():
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pool = SimpleTaskPool(work, args=('xyz', 420))
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await pool.start(5)
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@ -27,11 +35,11 @@ async def main():
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pool.stop(3)
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...
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pool.lock()
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await pool.gather()
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await pool.gather_and_close()
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...
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```
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Since one of the main goals of `asyncio-taskpool` is to be able to start/stop tasks dynamically or "on-the-fly", _most_ of the associated methods are non-blocking _most_ of the time. A notable exception is the `gather` method for awaiting the return of all tasks in the pool. (It is essentially a glorified wrapper around the [`asyncio.gather`](https://docs.python.org/3/library/asyncio-task.html#asyncio.gather) function.)
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Since one of the main goals of `asyncio-taskpool` is to be able to start/stop tasks dynamically or "on-the-fly", _most_ of the associated methods are non-blocking _most_ of the time. A notable exception is the `gather_and_close` method for awaiting the return of all tasks in the pool. (It is essentially a glorified wrapper around the [`asyncio.gather`](https://docs.python.org/3/library/asyncio-task.html#asyncio.gather) function.)
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For working and fully documented demo scripts see [USAGE.md](usage/USAGE.md).
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@ -1,6 +1,6 @@
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[metadata]
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name = asyncio-taskpool
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version = 0.3.5
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version = 0.4.0
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author = Daniil Fajnberg
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author_email = mail@daniil.fajnberg.de
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description = Dynamically manage pools of asyncio tasks
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@ -54,10 +54,10 @@ def parse_cli() -> Dict[str, Any]:
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async def main():
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kwargs = parse_cli()
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if kwargs[CONN_TYPE] == UNIX:
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client = UnixControlClient(path=kwargs[SOCKET_PATH])
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client = UnixControlClient(socket_path=kwargs[SOCKET_PATH])
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elif kwargs[CONN_TYPE] == TCP:
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# TODO: Implement the TCP client class
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client = UnixControlClient(path=kwargs[SOCKET_PATH])
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client = UnixControlClient(socket_path=kwargs[SOCKET_PATH])
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else:
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print("Invalid connection type", file=sys.stderr)
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sys.exit(2)
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@ -21,6 +21,9 @@ Constants used by more than one module in the package.
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PACKAGE_NAME = 'asyncio_taskpool'
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DEFAULT_TASK_GROUP = ''
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DATETIME_FORMAT = '%Y-%m-%d_%H-%M-%S'
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CLIENT_EXIT = 'exit'
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SESSION_MSG_BYTES = 1024 * 100
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@ -23,6 +23,10 @@ class PoolException(Exception):
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pass
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class PoolIsClosed(PoolException):
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pass
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class PoolIsLocked(PoolException):
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pass
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@ -43,6 +47,10 @@ class InvalidTaskID(PoolException):
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pass
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class InvalidGroupName(PoolException):
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pass
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class PoolStillUnlocked(PoolException):
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pass
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75
src/asyncio_taskpool/group_register.py
Normal file
75
src/asyncio_taskpool/group_register.py
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@ -0,0 +1,75 @@
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__author__ = "Daniil Fajnberg"
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__copyright__ = "Copyright © 2022 Daniil Fajnberg"
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__license__ = """GNU LGPLv3.0
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This file is part of asyncio-taskpool.
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asyncio-taskpool is free software: you can redistribute it and/or modify it under the terms of
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version 3.0 of the GNU Lesser General Public License as published by the Free Software Foundation.
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asyncio-taskpool is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along with asyncio-taskpool.
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If not, see <https://www.gnu.org/licenses/>."""
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__doc__ = """
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This module contains the definition of the `TaskGroupRegister` class.
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"""
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from asyncio.locks import Lock
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from collections.abc import MutableSet
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from typing import Iterator, Set
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class TaskGroupRegister(MutableSet):
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"""
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This class combines the interface of a regular `set` with that of the `asyncio.Lock`.
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It serves simultaneously as a container of IDs of tasks that belong to the same group, and as a mechanism for
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preventing race conditions within a task group. The lock should be acquired before cancelling the entire group of
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tasks, as well as before starting a task within the group.
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"""
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def __init__(self, *task_ids: int) -> None:
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self._ids: Set[int] = set(task_ids)
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self._lock = Lock()
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def __contains__(self, task_id: int) -> bool:
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"""Abstract method for the `MutableSet` base class."""
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return task_id in self._ids
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def __iter__(self) -> Iterator[int]:
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"""Abstract method for the `MutableSet` base class."""
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return iter(self._ids)
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def __len__(self) -> int:
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"""Abstract method for the `MutableSet` base class."""
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return len(self._ids)
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def add(self, task_id: int) -> None:
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"""Abstract method for the `MutableSet` base class."""
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self._ids.add(task_id)
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def discard(self, task_id: int) -> None:
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"""Abstract method for the `MutableSet` base class."""
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self._ids.discard(task_id)
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async def acquire(self) -> bool:
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"""Wrapper around the lock's `acquire()` method."""
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return await self._lock.acquire()
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def release(self) -> None:
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"""Wrapper around the lock's `release()` method."""
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self._lock.release()
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async def __aenter__(self) -> None:
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"""Provides the asynchronous context manager syntax `async with ... :` when using the lock."""
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await self._lock.acquire()
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return None
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async def __aexit__(self, exc_type, exc, tb) -> None:
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"""Provides the asynchronous context manager syntax `async with ... :` when using the lock."""
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self._lock.release()
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File diff suppressed because it is too large
Load Diff
58
src/asyncio_taskpool/queue_context.py
Normal file
58
src/asyncio_taskpool/queue_context.py
Normal file
@ -0,0 +1,58 @@
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__author__ = "Daniil Fajnberg"
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__copyright__ = "Copyright © 2022 Daniil Fajnberg"
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__license__ = """GNU LGPLv3.0
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This file is part of asyncio-taskpool.
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asyncio-taskpool is free software: you can redistribute it and/or modify it under the terms of
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version 3.0 of the GNU Lesser General Public License as published by the Free Software Foundation.
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asyncio-taskpool is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along with asyncio-taskpool.
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If not, see <https://www.gnu.org/licenses/>."""
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__doc__ = """
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This module contains the definition of an `asyncio.Queue` subclass.
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"""
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from asyncio.queues import Queue as _Queue
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from typing import Any
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class Queue(_Queue):
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"""This just adds a little syntactic sugar to the `asyncio.Queue`."""
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def item_processed(self) -> None:
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"""
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Does exactly the same as `task_done()`.
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This method exists because `task_done` is an atrocious name for the method. It communicates the wrong thing,
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invites confusion, and immensely reduces readability (in the context of this library). And readability counts.
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"""
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self.task_done()
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async def __aenter__(self) -> Any:
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"""
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Implements an asynchronous context manager for the queue.
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Upon entering `get()` is awaited and subsequently whatever came out of the queue is returned.
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It allows writing code this way:
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>>> queue = Queue()
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>>> ...
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>>> async with queue as item:
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>>> ...
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"""
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return await self.get()
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async def __aexit__(self, exc_type, exc_val, exc_tb) -> None:
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"""
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Implements an asynchronous context manager for the queue.
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Upon exiting `item_processed()` is called. This is why this context manager may not always be what you want,
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but in some situations it makes the codes much cleaner.
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"""
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self.item_processed()
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@ -32,8 +32,8 @@ KwArgsT = Mapping[str, Any]
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AnyCallableT = Callable[[...], Union[T, Awaitable[T]]]
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CoroutineFunc = Callable[[...], Awaitable[Any]]
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EndCallbackT = Callable
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CancelCallbackT = Callable
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EndCB = Callable
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CancelCB = Callable
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ConnectedCallbackT = Callable[[StreamReader, StreamWriter], Awaitable[None]]
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ClientConnT = Union[Tuple[StreamReader, StreamWriter], Tuple[None, None]]
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@ -18,19 +18,20 @@ __doc__ = """
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Unittests for the `asyncio_taskpool.pool` module.
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"""
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import asyncio
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from asyncio.exceptions import CancelledError
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from asyncio.queues import Queue
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from asyncio.locks import Semaphore
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from asyncio.queues import QueueEmpty
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from datetime import datetime
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from unittest import IsolatedAsyncioTestCase
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from unittest.mock import PropertyMock, MagicMock, AsyncMock, patch, call
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from typing import Type
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from asyncio_taskpool import pool, exceptions
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from asyncio_taskpool.constants import DATETIME_FORMAT
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EMPTY_LIST, EMPTY_DICT = [], {}
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FOO, BAR = 'foo', 'bar'
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EMPTY_LIST, EMPTY_DICT, EMPTY_SET = [], {}, set()
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FOO, BAR, BAZ = 'foo', 'bar', 'baz'
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class TestException(Exception):
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@ -45,19 +46,12 @@ class CommonTestCase(IsolatedAsyncioTestCase):
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task_pool: pool.BaseTaskPool
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log_lvl: int
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@classmethod
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def setUpClass(cls) -> None:
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cls.log_lvl = pool.log.level
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pool.log.setLevel(999)
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@classmethod
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def tearDownClass(cls) -> None:
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pool.log.setLevel(cls.log_lvl)
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def get_task_pool_init_params(self) -> dict:
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return {'pool_size': self.TEST_POOL_SIZE, 'name': self.TEST_POOL_NAME}
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def setUp(self) -> None:
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self.log_lvl = pool.log.level
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pool.log.setLevel(999)
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self._pools = self.TEST_CLASS._pools
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# These three methods are called during initialization, so we mock them by default during setup:
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self._add_pool_patcher = patch.object(self.TEST_CLASS, '_add_pool')
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@ -76,6 +70,7 @@ class CommonTestCase(IsolatedAsyncioTestCase):
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self._add_pool_patcher.stop()
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self.pool_size_patcher.stop()
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self.dunder_str_patcher.stop()
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pool.log.setLevel(self.log_lvl)
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class BaseTaskPoolTestCase(CommonTestCase):
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@ -88,19 +83,23 @@ class BaseTaskPoolTestCase(CommonTestCase):
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self.assertListEqual([self.task_pool], pool.BaseTaskPool._pools)
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def test_init(self):
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self.assertIsInstance(self.task_pool._enough_room, asyncio.locks.Semaphore)
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self.assertEqual(0, self.task_pool._num_started)
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self.assertEqual(0, self.task_pool._num_cancellations)
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self.assertFalse(self.task_pool._locked)
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self.assertEqual(0, self.task_pool._counter)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._running)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._cancelled)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._ended)
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self.assertEqual(0, self.task_pool._num_cancelled)
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self.assertEqual(0, self.task_pool._num_ended)
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self.assertEqual(self.mock_idx, self.task_pool._idx)
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self.assertFalse(self.task_pool._closed)
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self.assertEqual(self.TEST_POOL_NAME, self.task_pool._name)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_running)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_cancelled)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_ended)
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self.assertListEqual(self.task_pool._before_gathering, EMPTY_LIST)
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self.assertIsInstance(self.task_pool._interrupt_flag, asyncio.locks.Event)
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self.assertFalse(self.task_pool._interrupt_flag.is_set())
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self.assertIsInstance(self.task_pool._enough_room, Semaphore)
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self.assertDictEqual(EMPTY_DICT, self.task_pool._task_groups)
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self.assertEqual(self.mock_idx, self.task_pool._idx)
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self.mock__add_pool.assert_called_once_with(self.task_pool)
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self.mock_pool_size.assert_called_once_with(self.TEST_POOL_SIZE)
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self.mock___str__.assert_called_once_with()
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@ -143,26 +142,56 @@ class BaseTaskPoolTestCase(CommonTestCase):
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self.assertFalse(self.task_pool._locked)
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def test_num_running(self):
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self.task_pool._running = ['foo', 'bar', 'baz']
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self.task_pool._tasks_running = {1: FOO, 2: BAR, 3: BAZ}
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self.assertEqual(3, self.task_pool.num_running)
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def test_num_cancelled(self):
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self.task_pool._num_cancelled = 3
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self.assertEqual(3, self.task_pool.num_cancelled)
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def test_num_cancellations(self):
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self.task_pool._num_cancellations = 3
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self.assertEqual(3, self.task_pool.num_cancellations)
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def test_num_ended(self):
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self.task_pool._num_ended = 3
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self.task_pool._tasks_ended = {1: FOO, 2: BAR, 3: BAZ}
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self.assertEqual(3, self.task_pool.num_ended)
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def test_num_finished(self):
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self.task_pool._num_cancelled = cancelled = 69
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self.task_pool._num_ended = ended = 420
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self.task_pool._cancelled = mock_cancelled_dict = {1: 'foo', 2: 'bar'}
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self.assertEqual(ended - cancelled + len(mock_cancelled_dict), self.task_pool.num_finished)
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self.task_pool._num_cancellations = num_cancellations = 69
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num_ended = 420
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self.task_pool._tasks_ended = {i: FOO for i in range(num_ended)}
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self.task_pool._tasks_cancelled = mock_cancelled_dict = {1: FOO, 2: BAR, 3: BAZ}
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self.assertEqual(num_ended - num_cancellations + len(mock_cancelled_dict), self.task_pool.num_finished)
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def test_is_full(self):
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self.assertEqual(self.task_pool._enough_room.locked(), self.task_pool.is_full)
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def test_get_task_group_ids(self):
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group_name, ids = 'abcdef', [1, 2, 3]
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self.task_pool._task_groups[group_name] = MagicMock(__iter__=lambda _: iter(ids))
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self.assertEqual(set(ids), self.task_pool.get_task_group_ids(group_name))
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with self.assertRaises(exceptions.InvalidGroupName):
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self.task_pool.get_task_group_ids('something else')
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async def test__check_start(self):
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self.task_pool._closed = True
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mock_coroutine, mock_coroutine_function = AsyncMock()(), AsyncMock()
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try:
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with self.assertRaises(AssertionError):
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self.task_pool._check_start(awaitable=None, function=None)
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with self.assertRaises(AssertionError):
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self.task_pool._check_start(awaitable=mock_coroutine, function=mock_coroutine_function)
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with self.assertRaises(exceptions.NotCoroutine):
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self.task_pool._check_start(awaitable=mock_coroutine_function, function=None)
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with self.assertRaises(exceptions.NotCoroutine):
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self.task_pool._check_start(awaitable=None, function=mock_coroutine)
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with self.assertRaises(exceptions.PoolIsClosed):
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self.task_pool._check_start(awaitable=mock_coroutine, function=None)
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self.task_pool._closed = False
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self.task_pool._locked = True
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with self.assertRaises(exceptions.PoolIsLocked):
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self.task_pool._check_start(awaitable=mock_coroutine, function=None, ignore_lock=False)
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self.assertIsNone(self.task_pool._check_start(awaitable=mock_coroutine, function=None, ignore_lock=True))
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finally:
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await mock_coroutine
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def test__task_name(self):
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i = 123
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self.assertEqual(f'{self.mock_str}_Task-{i}', self.task_pool._task_name(i))
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@ -171,12 +200,12 @@ class BaseTaskPoolTestCase(CommonTestCase):
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@patch.object(pool.BaseTaskPool, '_task_name', return_value=FOO)
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async def test__task_cancellation(self, mock__task_name: MagicMock, mock_execute_optional: AsyncMock):
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task_id, mock_task, mock_callback = 1, MagicMock(), MagicMock()
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self.task_pool._num_cancelled = cancelled = 3
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self.task_pool._running[task_id] = mock_task
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self.task_pool._num_cancellations = cancelled = 3
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self.task_pool._tasks_running[task_id] = mock_task
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self.assertIsNone(await self.task_pool._task_cancellation(task_id, mock_callback))
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self.assertNotIn(task_id, self.task_pool._running)
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self.assertEqual(mock_task, self.task_pool._cancelled[task_id])
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self.assertEqual(cancelled + 1, self.task_pool._num_cancelled)
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self.assertNotIn(task_id, self.task_pool._tasks_running)
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self.assertEqual(mock_task, self.task_pool._tasks_cancelled[task_id])
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self.assertEqual(cancelled + 1, self.task_pool._num_cancellations)
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mock__task_name.assert_called_with(task_id)
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mock_execute_optional.assert_awaited_once_with(mock_callback, args=(task_id, ))
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@ -184,15 +213,13 @@ class BaseTaskPoolTestCase(CommonTestCase):
|
||||
@patch.object(pool.BaseTaskPool, '_task_name', return_value=FOO)
|
||||
async def test__task_ending(self, mock__task_name: MagicMock, mock_execute_optional: AsyncMock):
|
||||
task_id, mock_task, mock_callback = 1, MagicMock(), MagicMock()
|
||||
self.task_pool._num_ended = ended = 3
|
||||
self.task_pool._enough_room._value = room = 123
|
||||
|
||||
# End running task:
|
||||
self.task_pool._running[task_id] = mock_task
|
||||
self.task_pool._tasks_running[task_id] = mock_task
|
||||
self.assertIsNone(await self.task_pool._task_ending(task_id, mock_callback))
|
||||
self.assertNotIn(task_id, self.task_pool._running)
|
||||
self.assertEqual(mock_task, self.task_pool._ended[task_id])
|
||||
self.assertEqual(ended + 1, self.task_pool._num_ended)
|
||||
self.assertNotIn(task_id, self.task_pool._tasks_running)
|
||||
self.assertEqual(mock_task, self.task_pool._tasks_ended[task_id])
|
||||
self.assertEqual(room + 1, self.task_pool._enough_room._value)
|
||||
mock__task_name.assert_called_with(task_id)
|
||||
mock_execute_optional.assert_awaited_once_with(mock_callback, args=(task_id, ))
|
||||
@ -200,11 +227,10 @@ class BaseTaskPoolTestCase(CommonTestCase):
|
||||
mock_execute_optional.reset_mock()
|
||||
|
||||
# End cancelled task:
|
||||
self.task_pool._cancelled[task_id] = self.task_pool._ended.pop(task_id)
|
||||
self.task_pool._tasks_cancelled[task_id] = self.task_pool._tasks_ended.pop(task_id)
|
||||
self.assertIsNone(await self.task_pool._task_ending(task_id, mock_callback))
|
||||
self.assertNotIn(task_id, self.task_pool._cancelled)
|
||||
self.assertEqual(mock_task, self.task_pool._ended[task_id])
|
||||
self.assertEqual(ended + 2, self.task_pool._num_ended)
|
||||
self.assertNotIn(task_id, self.task_pool._tasks_cancelled)
|
||||
self.assertEqual(mock_task, self.task_pool._tasks_ended[task_id])
|
||||
self.assertEqual(room + 2, self.task_pool._enough_room._value)
|
||||
mock__task_name.assert_called_with(task_id)
|
||||
mock_execute_optional.assert_awaited_once_with(mock_callback, args=(task_id, ))
|
||||
@ -246,92 +272,52 @@ class BaseTaskPoolTestCase(CommonTestCase):
|
||||
@patch.object(pool, 'create_task')
|
||||
@patch.object(pool.BaseTaskPool, '_task_wrapper', new_callable=MagicMock)
|
||||
@patch.object(pool.BaseTaskPool, '_task_name', return_value=FOO)
|
||||
async def test__start_task(self, mock__task_name: MagicMock, mock__task_wrapper: AsyncMock,
|
||||
mock_create_task: MagicMock):
|
||||
def reset_mocks() -> None:
|
||||
mock__task_name.reset_mock()
|
||||
mock__task_wrapper.reset_mock()
|
||||
mock_create_task.reset_mock()
|
||||
|
||||
@patch.object(pool, 'TaskGroupRegister')
|
||||
@patch.object(pool.BaseTaskPool, '_check_start')
|
||||
async def test__start_task(self, mock__check_start: MagicMock, mock_reg_cls: MagicMock, mock__task_name: MagicMock,
|
||||
mock__task_wrapper: AsyncMock, mock_create_task: MagicMock):
|
||||
mock_group_reg = set_up_mock_group_register(mock_reg_cls)
|
||||
mock_create_task.return_value = mock_task = MagicMock()
|
||||
mock__task_wrapper.return_value = mock_wrapped = MagicMock()
|
||||
mock_coroutine, mock_cancel_cb, mock_end_cb = AsyncMock(), MagicMock(), MagicMock()
|
||||
self.task_pool._counter = count = 123
|
||||
mock_coroutine, mock_cancel_cb, mock_end_cb = MagicMock(), MagicMock(), MagicMock()
|
||||
self.task_pool._num_started = count = 123
|
||||
self.task_pool._enough_room._value = room = 123
|
||||
|
||||
def check_nothing_changed() -> None:
|
||||
self.assertEqual(count, self.task_pool._counter)
|
||||
self.assertNotIn(count, self.task_pool._running)
|
||||
self.assertEqual(room, self.task_pool._enough_room._value)
|
||||
mock__task_name.assert_not_called()
|
||||
mock__task_wrapper.assert_not_called()
|
||||
mock_create_task.assert_not_called()
|
||||
reset_mocks()
|
||||
|
||||
with self.assertRaises(exceptions.NotCoroutine):
|
||||
await self.task_pool._start_task(MagicMock(), end_callback=mock_end_cb, cancel_callback=mock_cancel_cb)
|
||||
check_nothing_changed()
|
||||
|
||||
self.task_pool._locked = True
|
||||
ignore_closed = False
|
||||
mock_awaitable = mock_coroutine()
|
||||
with self.assertRaises(exceptions.PoolIsLocked):
|
||||
await self.task_pool._start_task(mock_awaitable, ignore_closed,
|
||||
end_callback=mock_end_cb, cancel_callback=mock_cancel_cb)
|
||||
await mock_awaitable
|
||||
check_nothing_changed()
|
||||
|
||||
ignore_closed = True
|
||||
mock_awaitable = mock_coroutine()
|
||||
output = await self.task_pool._start_task(mock_awaitable, ignore_closed,
|
||||
group_name, ignore_lock = 'testgroup', True
|
||||
output = await self.task_pool._start_task(mock_coroutine, group_name=group_name, ignore_lock=ignore_lock,
|
||||
end_callback=mock_end_cb, cancel_callback=mock_cancel_cb)
|
||||
await mock_awaitable
|
||||
self.assertEqual(count, output)
|
||||
self.assertEqual(count + 1, self.task_pool._counter)
|
||||
self.assertEqual(mock_task, self.task_pool._running[count])
|
||||
mock__check_start.assert_called_once_with(awaitable=mock_coroutine, ignore_lock=ignore_lock)
|
||||
self.assertEqual(room - 1, self.task_pool._enough_room._value)
|
||||
self.assertEqual(mock_group_reg, self.task_pool._task_groups[group_name])
|
||||
mock_reg_cls.assert_called_once_with()
|
||||
mock_group_reg.__aenter__.assert_awaited_once_with()
|
||||
mock_group_reg.add.assert_called_once_with(count)
|
||||
mock__task_name.assert_called_once_with(count)
|
||||
mock__task_wrapper.assert_called_once_with(mock_awaitable, count, mock_end_cb, mock_cancel_cb)
|
||||
mock_create_task.assert_called_once_with(mock_wrapped, name=FOO)
|
||||
reset_mocks()
|
||||
self.task_pool._counter = count
|
||||
self.task_pool._enough_room._value = room
|
||||
del self.task_pool._running[count]
|
||||
|
||||
mock_awaitable = mock_coroutine()
|
||||
mock_create_task.side_effect = test_exception = TestException()
|
||||
with self.assertRaises(TestException) as e:
|
||||
await self.task_pool._start_task(mock_awaitable, ignore_closed,
|
||||
end_callback=mock_end_cb, cancel_callback=mock_cancel_cb)
|
||||
self.assertEqual(test_exception, e)
|
||||
await mock_awaitable
|
||||
self.assertEqual(count + 1, self.task_pool._counter)
|
||||
self.assertNotIn(count, self.task_pool._running)
|
||||
self.assertEqual(room, self.task_pool._enough_room._value)
|
||||
mock__task_name.assert_called_once_with(count)
|
||||
mock__task_wrapper.assert_called_once_with(mock_awaitable, count, mock_end_cb, mock_cancel_cb)
|
||||
mock_create_task.assert_called_once_with(mock_wrapped, name=FOO)
|
||||
mock__task_wrapper.assert_called_once_with(mock_coroutine, count, mock_end_cb, mock_cancel_cb)
|
||||
mock_create_task.assert_called_once_with(coro=mock_wrapped, name=FOO)
|
||||
self.assertEqual(mock_task, self.task_pool._tasks_running[count])
|
||||
mock_group_reg.__aexit__.assert_awaited_once()
|
||||
|
||||
@patch.object(pool.BaseTaskPool, '_task_name', return_value=FOO)
|
||||
def test__get_running_task(self, mock__task_name: MagicMock):
|
||||
task_id, mock_task = 555, MagicMock()
|
||||
self.task_pool._running[task_id] = mock_task
|
||||
self.task_pool._tasks_running[task_id] = mock_task
|
||||
output = self.task_pool._get_running_task(task_id)
|
||||
self.assertEqual(mock_task, output)
|
||||
|
||||
self.task_pool._cancelled[task_id] = self.task_pool._running.pop(task_id)
|
||||
self.task_pool._tasks_cancelled[task_id] = self.task_pool._tasks_running.pop(task_id)
|
||||
with self.assertRaises(exceptions.AlreadyCancelled):
|
||||
self.task_pool._get_running_task(task_id)
|
||||
mock__task_name.assert_called_once_with(task_id)
|
||||
mock__task_name.reset_mock()
|
||||
|
||||
self.task_pool._ended[task_id] = self.task_pool._cancelled.pop(task_id)
|
||||
self.task_pool._tasks_ended[task_id] = self.task_pool._tasks_cancelled.pop(task_id)
|
||||
with self.assertRaises(exceptions.TaskEnded):
|
||||
self.task_pool._get_running_task(task_id)
|
||||
mock__task_name.assert_called_once_with(task_id)
|
||||
mock__task_name.reset_mock()
|
||||
|
||||
del self.task_pool._ended[task_id]
|
||||
del self.task_pool._tasks_ended[task_id]
|
||||
with self.assertRaises(exceptions.InvalidTaskID):
|
||||
self.task_pool._get_running_task(task_id)
|
||||
mock__task_name.assert_not_called()
|
||||
@ -344,263 +330,416 @@ class BaseTaskPoolTestCase(CommonTestCase):
|
||||
mock__get_running_task.assert_has_calls([call(task_id1), call(task_id2), call(task_id3)])
|
||||
mock_cancel.assert_has_calls([call(msg=FOO), call(msg=FOO), call(msg=FOO)])
|
||||
|
||||
def test_cancel_all(self):
|
||||
mock_task1, mock_task2 = MagicMock(), MagicMock()
|
||||
self.task_pool._running = {1: mock_task1, 2: mock_task2}
|
||||
assert not self.task_pool._interrupt_flag.is_set()
|
||||
self.assertIsNone(self.task_pool.cancel_all(FOO))
|
||||
self.assertTrue(self.task_pool._interrupt_flag.is_set())
|
||||
mock_task1.cancel.assert_called_once_with(msg=FOO)
|
||||
mock_task2.cancel.assert_called_once_with(msg=FOO)
|
||||
def test__cancel_and_remove_all_from_group(self):
|
||||
task_id = 555
|
||||
mock_cancel = MagicMock()
|
||||
self.task_pool._tasks_running[task_id] = MagicMock(cancel=mock_cancel)
|
||||
|
||||
class MockRegister(set, MagicMock):
|
||||
pass
|
||||
self.assertIsNone(self.task_pool._cancel_and_remove_all_from_group(' ', MockRegister({task_id, 'x'}), msg=FOO))
|
||||
mock_cancel.assert_called_once_with(msg=FOO)
|
||||
|
||||
@patch.object(pool.BaseTaskPool, '_cancel_and_remove_all_from_group')
|
||||
async def test_cancel_group(self, mock__cancel_and_remove_all_from_group: MagicMock):
|
||||
mock_grp_aenter, mock_grp_aexit = AsyncMock(), AsyncMock()
|
||||
mock_group_reg = MagicMock(__aenter__=mock_grp_aenter, __aexit__=mock_grp_aexit)
|
||||
self.task_pool._task_groups[FOO] = mock_group_reg
|
||||
with self.assertRaises(exceptions.InvalidGroupName):
|
||||
await self.task_pool.cancel_group(BAR)
|
||||
mock__cancel_and_remove_all_from_group.assert_not_called()
|
||||
mock_grp_aenter.assert_not_called()
|
||||
mock_grp_aexit.assert_not_called()
|
||||
self.assertIsNone(await self.task_pool.cancel_group(FOO, msg=BAR))
|
||||
mock__cancel_and_remove_all_from_group.assert_called_once_with(FOO, mock_group_reg, msg=BAR)
|
||||
mock_grp_aenter.assert_awaited_once_with()
|
||||
mock_grp_aexit.assert_awaited_once()
|
||||
|
||||
@patch.object(pool.BaseTaskPool, '_cancel_and_remove_all_from_group')
|
||||
async def test_cancel_all(self, mock__cancel_and_remove_all_from_group: MagicMock):
|
||||
mock_grp_aenter, mock_grp_aexit = AsyncMock(), AsyncMock()
|
||||
mock_group_reg = MagicMock(__aenter__=mock_grp_aenter, __aexit__=mock_grp_aexit)
|
||||
self.task_pool._task_groups[BAR] = mock_group_reg
|
||||
self.assertIsNone(await self.task_pool.cancel_all(FOO))
|
||||
mock__cancel_and_remove_all_from_group.assert_called_once_with(BAR, mock_group_reg, msg=FOO)
|
||||
mock_grp_aenter.assert_awaited_once_with()
|
||||
mock_grp_aexit.assert_awaited_once()
|
||||
|
||||
async def test_flush(self):
|
||||
test_exception = TestException()
|
||||
mock_ended_func, mock_cancelled_func = AsyncMock(return_value=FOO), AsyncMock(side_effect=test_exception)
|
||||
self.task_pool._ended = {123: mock_ended_func()}
|
||||
self.task_pool._cancelled = {456: mock_cancelled_func()}
|
||||
self.task_pool._interrupt_flag.set()
|
||||
output = await self.task_pool.flush(return_exceptions=True)
|
||||
self.assertListEqual([FOO, test_exception], output)
|
||||
self.assertDictEqual(self.task_pool._ended, EMPTY_DICT)
|
||||
self.assertDictEqual(self.task_pool._cancelled, EMPTY_DICT)
|
||||
self.assertFalse(self.task_pool._interrupt_flag.is_set())
|
||||
mock_ended_func, mock_cancelled_func = AsyncMock(), AsyncMock(side_effect=Exception)
|
||||
self.task_pool._tasks_ended = {123: mock_ended_func()}
|
||||
self.task_pool._tasks_cancelled = {456: mock_cancelled_func()}
|
||||
self.assertIsNone(await self.task_pool.flush(return_exceptions=True))
|
||||
mock_ended_func.assert_awaited_once_with()
|
||||
mock_cancelled_func.assert_awaited_once_with()
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_ended)
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_cancelled)
|
||||
|
||||
self.task_pool._ended = {123: mock_ended_func()}
|
||||
self.task_pool._cancelled = {456: mock_cancelled_func()}
|
||||
output = await self.task_pool.flush(return_exceptions=True)
|
||||
self.assertListEqual([FOO, test_exception], output)
|
||||
self.assertDictEqual(self.task_pool._ended, EMPTY_DICT)
|
||||
self.assertDictEqual(self.task_pool._cancelled, EMPTY_DICT)
|
||||
async def test_gather_and_close(self):
|
||||
mock_before_gather, mock_running_func = AsyncMock(), AsyncMock()
|
||||
mock_ended_func, mock_cancelled_func = AsyncMock(), AsyncMock(side_effect=Exception)
|
||||
self.task_pool._before_gathering = before_gather = [mock_before_gather()]
|
||||
self.task_pool._tasks_ended = ended = {123: mock_ended_func()}
|
||||
self.task_pool._tasks_cancelled = cancelled = {456: mock_cancelled_func()}
|
||||
self.task_pool._tasks_running = running = {789: mock_running_func()}
|
||||
|
||||
async def test_gather(self):
|
||||
test_exception = TestException()
|
||||
mock_ended_func, mock_cancelled_func = AsyncMock(return_value=FOO), AsyncMock(side_effect=test_exception)
|
||||
mock_running_func = AsyncMock(return_value=BAR)
|
||||
mock_queue_join = AsyncMock()
|
||||
self.task_pool._before_gathering = before_gather = [mock_queue_join()]
|
||||
self.task_pool._ended = ended = {123: mock_ended_func()}
|
||||
self.task_pool._cancelled = cancelled = {456: mock_cancelled_func()}
|
||||
self.task_pool._running = running = {789: mock_running_func()}
|
||||
self.task_pool._interrupt_flag.set()
|
||||
|
||||
assert not self.task_pool._locked
|
||||
with self.assertRaises(exceptions.PoolStillUnlocked):
|
||||
await self.task_pool.gather()
|
||||
self.assertDictEqual(self.task_pool._ended, ended)
|
||||
self.assertDictEqual(self.task_pool._cancelled, cancelled)
|
||||
self.assertDictEqual(self.task_pool._running, running)
|
||||
self.assertListEqual(self.task_pool._before_gathering, before_gather)
|
||||
self.assertTrue(self.task_pool._interrupt_flag.is_set())
|
||||
await self.task_pool.gather_and_close()
|
||||
self.assertDictEqual(ended, self.task_pool._tasks_ended)
|
||||
self.assertDictEqual(cancelled, self.task_pool._tasks_cancelled)
|
||||
self.assertDictEqual(running, self.task_pool._tasks_running)
|
||||
self.assertListEqual(before_gather, self.task_pool._before_gathering)
|
||||
self.assertFalse(self.task_pool._closed)
|
||||
|
||||
self.task_pool._locked = True
|
||||
|
||||
def check_assertions(output) -> None:
|
||||
self.assertListEqual([FOO, test_exception, BAR], output)
|
||||
self.assertDictEqual(self.task_pool._ended, EMPTY_DICT)
|
||||
self.assertDictEqual(self.task_pool._cancelled, EMPTY_DICT)
|
||||
self.assertDictEqual(self.task_pool._running, EMPTY_DICT)
|
||||
self.assertListEqual(self.task_pool._before_gathering, EMPTY_LIST)
|
||||
self.assertFalse(self.task_pool._interrupt_flag.is_set())
|
||||
|
||||
check_assertions(await self.task_pool.gather(return_exceptions=True))
|
||||
|
||||
self.task_pool._before_gathering = [mock_queue_join()]
|
||||
self.task_pool._ended = {123: mock_ended_func()}
|
||||
self.task_pool._cancelled = {456: mock_cancelled_func()}
|
||||
self.task_pool._running = {789: mock_running_func()}
|
||||
check_assertions(await self.task_pool.gather(return_exceptions=True))
|
||||
self.assertIsNone(await self.task_pool.gather_and_close(return_exceptions=True))
|
||||
mock_before_gather.assert_awaited_once_with()
|
||||
mock_ended_func.assert_awaited_once_with()
|
||||
mock_cancelled_func.assert_awaited_once_with()
|
||||
mock_running_func.assert_awaited_once_with()
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_ended)
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_cancelled)
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._tasks_running)
|
||||
self.assertListEqual(EMPTY_LIST, self.task_pool._before_gathering)
|
||||
self.assertTrue(self.task_pool._closed)
|
||||
|
||||
|
||||
class TaskPoolTestCase(CommonTestCase):
|
||||
TEST_CLASS = pool.TaskPool
|
||||
task_pool: pool.TaskPool
|
||||
|
||||
@patch.object(pool.TaskPool, '_start_task')
|
||||
async def test__apply_one(self, mock__start_task: AsyncMock):
|
||||
mock__start_task.return_value = expected_output = 12345
|
||||
mock_awaitable = MagicMock()
|
||||
mock_func = MagicMock(return_value=mock_awaitable)
|
||||
args, kwargs = (FOO, BAR), {'a': 1, 'b': 2}
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
output = await self.task_pool._apply_one(mock_func, args, kwargs, end_cb, cancel_cb)
|
||||
def setUp(self) -> None:
|
||||
self.base_class_init_patcher = patch.object(pool.BaseTaskPool, '__init__')
|
||||
self.base_class_init = self.base_class_init_patcher.start()
|
||||
super().setUp()
|
||||
|
||||
def tearDown(self) -> None:
|
||||
self.base_class_init_patcher.stop()
|
||||
super().tearDown()
|
||||
|
||||
def test_init(self):
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._group_meta_tasks_running)
|
||||
self.base_class_init.assert_called_once_with(pool_size=self.TEST_POOL_SIZE, name=self.TEST_POOL_NAME)
|
||||
|
||||
def test__cancel_group_meta_tasks(self):
|
||||
mock_task1, mock_task2 = MagicMock(), MagicMock()
|
||||
self.task_pool._group_meta_tasks_running[BAR] = {mock_task1, mock_task2}
|
||||
self.assertIsNone(self.task_pool._cancel_group_meta_tasks(FOO))
|
||||
self.assertDictEqual({BAR: {mock_task1, mock_task2}}, self.task_pool._group_meta_tasks_running)
|
||||
self.assertSetEqual(EMPTY_SET, self.task_pool._meta_tasks_cancelled)
|
||||
mock_task1.cancel.assert_not_called()
|
||||
mock_task2.cancel.assert_not_called()
|
||||
|
||||
self.assertIsNone(self.task_pool._cancel_group_meta_tasks(BAR))
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._group_meta_tasks_running)
|
||||
self.assertSetEqual({mock_task1, mock_task2}, self.task_pool._meta_tasks_cancelled)
|
||||
mock_task1.cancel.assert_called_once_with()
|
||||
mock_task2.cancel.assert_called_once_with()
|
||||
|
||||
@patch.object(pool.BaseTaskPool, '_cancel_and_remove_all_from_group')
|
||||
@patch.object(pool.TaskPool, '_cancel_group_meta_tasks')
|
||||
def test__cancel_and_remove_all_from_group(self, mock__cancel_group_meta_tasks: MagicMock,
|
||||
mock_base__cancel_and_remove_all_from_group: MagicMock):
|
||||
group_name, group_reg, msg = 'xyz', MagicMock(), FOO
|
||||
self.assertIsNone(self.task_pool._cancel_and_remove_all_from_group(group_name, group_reg, msg=msg))
|
||||
mock__cancel_group_meta_tasks.assert_called_once_with(group_name)
|
||||
mock_base__cancel_and_remove_all_from_group.assert_called_once_with(group_name, group_reg, msg=msg)
|
||||
|
||||
@patch.object(pool.BaseTaskPool, 'cancel_group')
|
||||
async def test_cancel_group(self, mock_base_cancel_group: AsyncMock):
|
||||
group_name, msg = 'abc', 'xyz'
|
||||
await self.task_pool.cancel_group(group_name, msg=msg)
|
||||
mock_base_cancel_group.assert_awaited_once_with(group_name=group_name, msg=msg)
|
||||
|
||||
@patch.object(pool.BaseTaskPool, 'cancel_all')
|
||||
async def test_cancel_all(self, mock_base_cancel_all: AsyncMock):
|
||||
msg = 'xyz'
|
||||
await self.task_pool.cancel_all(msg=msg)
|
||||
mock_base_cancel_all.assert_awaited_once_with(msg=msg)
|
||||
|
||||
def test__pop_ended_meta_tasks(self):
|
||||
mock_task, mock_done_task1 = MagicMock(done=lambda: False), MagicMock(done=lambda: True)
|
||||
self.task_pool._group_meta_tasks_running[FOO] = {mock_task, mock_done_task1}
|
||||
mock_done_task2, mock_done_task3 = MagicMock(done=lambda: True), MagicMock(done=lambda: True)
|
||||
self.task_pool._group_meta_tasks_running[BAR] = {mock_done_task2, mock_done_task3}
|
||||
expected_output = {mock_done_task1, mock_done_task2, mock_done_task3}
|
||||
output = self.task_pool._pop_ended_meta_tasks()
|
||||
self.assertSetEqual(expected_output, output)
|
||||
self.assertDictEqual({FOO: {mock_task}}, self.task_pool._group_meta_tasks_running)
|
||||
|
||||
@patch.object(pool.TaskPool, '_pop_ended_meta_tasks')
|
||||
@patch.object(pool.BaseTaskPool, 'flush')
|
||||
async def test_flush(self, mock_base_flush: AsyncMock, mock__pop_ended_meta_tasks: MagicMock):
|
||||
mock_ended_meta_task = AsyncMock()
|
||||
mock__pop_ended_meta_tasks.return_value = {mock_ended_meta_task()}
|
||||
mock_cancelled_meta_task = AsyncMock(side_effect=CancelledError)
|
||||
self.task_pool._meta_tasks_cancelled = {mock_cancelled_meta_task()}
|
||||
self.assertIsNone(await self.task_pool.flush(return_exceptions=False))
|
||||
mock_base_flush.assert_awaited_once_with(return_exceptions=False)
|
||||
mock__pop_ended_meta_tasks.assert_called_once_with()
|
||||
mock_ended_meta_task.assert_awaited_once_with()
|
||||
mock_cancelled_meta_task.assert_awaited_once_with()
|
||||
self.assertSetEqual(EMPTY_SET, self.task_pool._meta_tasks_cancelled)
|
||||
|
||||
@patch.object(pool.BaseTaskPool, 'gather_and_close')
|
||||
async def test_gather_and_close(self, mock_base_gather_and_close: AsyncMock):
|
||||
mock_meta_task1, mock_meta_task2 = AsyncMock(), AsyncMock()
|
||||
self.task_pool._group_meta_tasks_running = {FOO: {mock_meta_task1()}, BAR: {mock_meta_task2()}}
|
||||
mock_cancelled_meta_task = AsyncMock(side_effect=CancelledError)
|
||||
self.task_pool._meta_tasks_cancelled = {mock_cancelled_meta_task()}
|
||||
self.assertIsNone(await self.task_pool.gather_and_close(return_exceptions=True))
|
||||
mock_base_gather_and_close.assert_awaited_once_with(return_exceptions=True)
|
||||
mock_meta_task1.assert_awaited_once_with()
|
||||
mock_meta_task2.assert_awaited_once_with()
|
||||
mock_cancelled_meta_task.assert_awaited_once_with()
|
||||
self.assertDictEqual(EMPTY_DICT, self.task_pool._group_meta_tasks_running)
|
||||
self.assertSetEqual(EMPTY_SET, self.task_pool._meta_tasks_cancelled)
|
||||
|
||||
@patch.object(pool, 'datetime')
|
||||
def test__generate_group_name(self, mock_datetime: MagicMock):
|
||||
prefix, func = 'x y z', AsyncMock(__name__=BAR)
|
||||
dt = datetime(1776, 7, 4, 0, 0, 1)
|
||||
mock_datetime.now = MagicMock(return_value=dt)
|
||||
expected_output = f'{prefix}_{BAR}_{dt.strftime(DATETIME_FORMAT)}'
|
||||
output = pool.TaskPool._generate_group_name(prefix, func)
|
||||
self.assertEqual(expected_output, output)
|
||||
mock_func.assert_called_once_with(*args, **kwargs)
|
||||
mock__start_task.assert_awaited_once_with(mock_awaitable, end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
|
||||
@patch.object(pool.TaskPool, '_start_task')
|
||||
async def test__apply_num(self, mock__start_task: AsyncMock):
|
||||
group_name = FOO + BAR
|
||||
mock_awaitable = object()
|
||||
mock_func = MagicMock(return_value=mock_awaitable)
|
||||
args, kwargs, num = (FOO, BAR), {'a': 1, 'b': 2}, 3
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool._apply_num(group_name, mock_func, args, kwargs, num, end_cb, cancel_cb))
|
||||
mock_func.assert_has_calls(3 * [call(*args, **kwargs)])
|
||||
mock__start_task.assert_has_awaits(3 * [
|
||||
call(mock_awaitable, group_name=group_name, end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
])
|
||||
|
||||
mock_func.reset_mock()
|
||||
mock__start_task.reset_mock()
|
||||
|
||||
output = await self.task_pool._apply_one(mock_func, args, None, end_cb, cancel_cb)
|
||||
self.assertEqual(expected_output, output)
|
||||
mock_func.assert_called_once_with(*args)
|
||||
mock__start_task.assert_awaited_once_with(mock_awaitable, end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
self.assertIsNone(await self.task_pool._apply_num(group_name, mock_func, args, None, num, end_cb, cancel_cb))
|
||||
mock_func.assert_has_calls(num * [call(*args)])
|
||||
mock__start_task.assert_has_awaits(num * [
|
||||
call(mock_awaitable, group_name=group_name, end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
])
|
||||
|
||||
@patch.object(pool.TaskPool, '_apply_one')
|
||||
async def test_apply(self, mock__apply_one: AsyncMock):
|
||||
mock__apply_one.return_value = mock_id = 67890
|
||||
mock_func, num = MagicMock(), 3
|
||||
@patch.object(pool, 'create_task')
|
||||
@patch.object(pool.TaskPool, '_apply_num', new_callable=MagicMock())
|
||||
@patch.object(pool, 'TaskGroupRegister')
|
||||
@patch.object(pool.TaskPool, '_generate_group_name')
|
||||
@patch.object(pool.BaseTaskPool, '_check_start')
|
||||
async def test_apply(self, mock__check_start: MagicMock, mock__generate_group_name: MagicMock,
|
||||
mock_reg_cls: MagicMock, mock__apply_num: MagicMock, mock_create_task: MagicMock):
|
||||
mock__generate_group_name.return_value = generated_name = 'name 123'
|
||||
mock_group_reg = set_up_mock_group_register(mock_reg_cls)
|
||||
mock__apply_num.return_value = mock_apply_coroutine = object()
|
||||
mock_task_future = AsyncMock()
|
||||
mock_create_task.return_value = mock_task_future()
|
||||
mock_func, num, group_name = MagicMock(), 3, FOO + BAR
|
||||
args, kwargs = (FOO, BAR), {'a': 1, 'b': 2}
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
expected_output = num * [mock_id]
|
||||
output = await self.task_pool.apply(mock_func, args, kwargs, num, end_cb, cancel_cb)
|
||||
self.assertEqual(expected_output, output)
|
||||
mock__apply_one.assert_has_awaits(num * [call(mock_func, args, kwargs, end_cb, cancel_cb)])
|
||||
self.task_pool._task_groups = {}
|
||||
|
||||
async def test__queue_producer(self):
|
||||
def check_assertions(_group_name, _output):
|
||||
self.assertEqual(_group_name, _output)
|
||||
mock__check_start.assert_called_once_with(function=mock_func)
|
||||
self.assertEqual(mock_group_reg, self.task_pool._task_groups[_group_name])
|
||||
mock_group_reg.__aenter__.assert_awaited_once_with()
|
||||
mock__apply_num.assert_called_once_with(_group_name, mock_func, args, kwargs, num, end_cb, cancel_cb)
|
||||
mock_create_task.assert_called_once_with(mock_apply_coroutine)
|
||||
mock_group_reg.__aexit__.assert_awaited_once()
|
||||
mock_task_future.assert_awaited_once_with()
|
||||
|
||||
output = await self.task_pool.apply(mock_func, args, kwargs, num, group_name, end_cb, cancel_cb)
|
||||
check_assertions(group_name, output)
|
||||
mock__generate_group_name.assert_not_called()
|
||||
|
||||
mock__check_start.reset_mock()
|
||||
self.task_pool._task_groups.clear()
|
||||
mock_group_reg.__aenter__.reset_mock()
|
||||
mock__apply_num.reset_mock()
|
||||
mock_create_task.reset_mock()
|
||||
mock_group_reg.__aexit__.reset_mock()
|
||||
mock_task_future = AsyncMock()
|
||||
mock_create_task.return_value = mock_task_future()
|
||||
|
||||
output = await self.task_pool.apply(mock_func, args, kwargs, num, None, end_cb, cancel_cb)
|
||||
check_assertions(generated_name, output)
|
||||
mock__generate_group_name.assert_called_once_with('apply', mock_func)
|
||||
|
||||
@patch.object(pool, 'Queue')
|
||||
async def test__queue_producer(self, mock_queue_cls: MagicMock):
|
||||
mock_put = AsyncMock()
|
||||
mock_q = MagicMock(put=mock_put)
|
||||
args = (FOO, BAR, 123)
|
||||
assert not self.task_pool._interrupt_flag.is_set()
|
||||
self.assertIsNone(await self.task_pool._queue_producer(mock_q, args))
|
||||
mock_put.assert_has_awaits([call(arg) for arg in args])
|
||||
mock_queue_cls.return_value = mock_queue = MagicMock(put=mock_put)
|
||||
item1, item2, item3 = FOO, 420, 69
|
||||
arg_iter = iter([item1, item2, item3])
|
||||
self.assertIsNone(await self.task_pool._queue_producer(mock_queue, arg_iter, FOO + BAR))
|
||||
mock_put.assert_has_awaits([call(item1), call(item2), call(item3), call(pool.TaskPool._QUEUE_END_SENTINEL)])
|
||||
with self.assertRaises(StopIteration):
|
||||
next(arg_iter)
|
||||
|
||||
mock_put.reset_mock()
|
||||
self.task_pool._interrupt_flag.set()
|
||||
self.assertIsNone(await self.task_pool._queue_producer(mock_q, args))
|
||||
mock_put.assert_not_awaited()
|
||||
|
||||
@patch.object(pool, 'partial')
|
||||
@patch.object(pool, 'star_function')
|
||||
@patch.object(pool.TaskPool, '_start_task')
|
||||
async def test__queue_consumer(self, mock__start_task: AsyncMock, mock_star_function: MagicMock,
|
||||
mock_partial: MagicMock):
|
||||
mock_partial.return_value = queue_callback = 'not really'
|
||||
mock_star_function.return_value = awaitable = 'totally an awaitable'
|
||||
q, arg = Queue(), 420.69
|
||||
q.put_nowait(arg)
|
||||
mock_func, stars = MagicMock(), 3
|
||||
mock_flag, end_cb, cancel_cb = MagicMock(), MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool._queue_consumer(q, mock_flag, mock_func, stars, end_cb, cancel_cb))
|
||||
self.assertTrue(q.empty())
|
||||
mock__start_task.assert_awaited_once_with(awaitable, ignore_lock=True,
|
||||
end_callback=queue_callback, cancel_callback=cancel_cb)
|
||||
mock_star_function.assert_called_once_with(mock_func, arg, arg_stars=stars)
|
||||
mock_partial.assert_called_once_with(pool.TaskPool._queue_callback, self.task_pool,
|
||||
q=q, first_batch_started=mock_flag, func=mock_func, arg_stars=stars,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__start_task.reset_mock()
|
||||
mock_star_function.reset_mock()
|
||||
mock_partial.reset_mock()
|
||||
|
||||
self.assertIsNone(await self.task_pool._queue_consumer(q, mock_flag, mock_func, stars, end_cb, cancel_cb))
|
||||
self.assertTrue(q.empty())
|
||||
mock__start_task.assert_not_awaited()
|
||||
mock_star_function.assert_not_called()
|
||||
mock_partial.assert_not_called()
|
||||
mock_put.side_effect = [CancelledError, None]
|
||||
arg_iter = iter([item1, item2, item3])
|
||||
mock_queue.get_nowait.side_effect = [item2, item3, QueueEmpty]
|
||||
self.assertIsNone(await self.task_pool._queue_producer(mock_queue, arg_iter, FOO + BAR))
|
||||
mock_put.assert_has_awaits([call(item1), call(pool.TaskPool._QUEUE_END_SENTINEL)])
|
||||
mock_queue.get_nowait.assert_has_calls([call(), call(), call()])
|
||||
mock_queue.item_processed.assert_has_calls([call(), call()])
|
||||
self.assertListEqual([item2, item3], list(arg_iter))
|
||||
|
||||
@patch.object(pool, 'execute_optional')
|
||||
@patch.object(pool.TaskPool, '_queue_consumer')
|
||||
async def test__queue_callback(self, mock__queue_consumer: AsyncMock, mock_execute_optional: AsyncMock):
|
||||
task_id, mock_q = 420, MagicMock()
|
||||
mock_func, stars = MagicMock(), 3
|
||||
mock_wait = AsyncMock()
|
||||
mock_flag = MagicMock(wait=mock_wait)
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool._queue_callback(task_id, mock_q, mock_flag, mock_func, stars,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb))
|
||||
mock_wait.assert_awaited_once_with()
|
||||
mock__queue_consumer.assert_awaited_once_with(mock_q, mock_flag, mock_func, stars,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock_execute_optional.assert_awaited_once_with(end_cb, args=(task_id,))
|
||||
async def test__get_map_end_callback(self, mock_execute_optional: AsyncMock):
|
||||
semaphore, mock_end_cb = Semaphore(1), MagicMock()
|
||||
wrapped = pool.TaskPool._get_map_end_callback(semaphore, mock_end_cb)
|
||||
task_id = 1234
|
||||
await wrapped(task_id)
|
||||
self.assertEqual(2, semaphore._value)
|
||||
mock_execute_optional.assert_awaited_once_with(mock_end_cb, args=(task_id,))
|
||||
|
||||
@patch.object(pool, 'star_function')
|
||||
@patch.object(pool.TaskPool, '_start_task')
|
||||
@patch.object(pool, 'Semaphore')
|
||||
@patch.object(pool.TaskPool, '_get_map_end_callback')
|
||||
async def test__queue_consumer(self, mock__get_map_end_callback: MagicMock, mock_semaphore_cls: MagicMock,
|
||||
mock__start_task: AsyncMock, mock_star_function: MagicMock):
|
||||
mock__get_map_end_callback.return_value = map_cb = MagicMock()
|
||||
mock_semaphore_cls.return_value = semaphore = Semaphore(3)
|
||||
mock_star_function.return_value = awaitable = 'totally an awaitable'
|
||||
arg1, arg2 = 123456789, 'function argument'
|
||||
mock_q_maxsize = 3
|
||||
mock_q = MagicMock(__aenter__=AsyncMock(side_effect=[arg1, arg2, pool.TaskPool._QUEUE_END_SENTINEL]),
|
||||
__aexit__=AsyncMock(), maxsize=mock_q_maxsize)
|
||||
group_name, mock_func, stars = 'whatever', MagicMock(), 3
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool._queue_consumer(mock_q, group_name, mock_func, stars, end_cb, cancel_cb))
|
||||
self.assertTrue(semaphore.locked())
|
||||
mock__get_map_end_callback.assert_called_once_with(semaphore, actual_end_callback=end_cb)
|
||||
mock__start_task.assert_has_awaits(2 * [
|
||||
call(awaitable, group_name=group_name, ignore_lock=True, end_callback=map_cb, cancel_callback=cancel_cb)
|
||||
])
|
||||
mock_star_function.assert_has_calls([
|
||||
call(mock_func, arg1, arg_stars=stars),
|
||||
call(mock_func, arg2, arg_stars=stars)
|
||||
])
|
||||
|
||||
@patch.object(pool, 'iter')
|
||||
@patch.object(pool, 'create_task')
|
||||
@patch.object(pool, 'join_queue', new_callable=MagicMock)
|
||||
@patch.object(pool.TaskPool, '_queue_consumer', new_callable=MagicMock)
|
||||
@patch.object(pool.TaskPool, '_queue_producer', new_callable=MagicMock)
|
||||
async def test__set_up_args_queue(self, mock__queue_producer: MagicMock, mock_join_queue: MagicMock,
|
||||
mock_create_task: MagicMock, mock_iter: MagicMock):
|
||||
args, num_tasks = (FOO, BAR, 1, 2, 3), 2
|
||||
mock_join_queue.return_value = mock_join = 'awaitable'
|
||||
mock_iter.return_value = args_iter = iter(args)
|
||||
mock__queue_producer.return_value = mock_producer_coro = 'very awaitable'
|
||||
output_q = self.task_pool._set_up_args_queue(args, num_tasks)
|
||||
self.assertIsInstance(output_q, Queue)
|
||||
self.assertEqual(num_tasks, output_q.qsize())
|
||||
for arg in args[:num_tasks]:
|
||||
self.assertEqual(arg, output_q.get_nowait())
|
||||
self.assertTrue(output_q.empty())
|
||||
for arg in args[num_tasks:]:
|
||||
self.assertEqual(arg, next(args_iter))
|
||||
with self.assertRaises(StopIteration):
|
||||
next(args_iter)
|
||||
self.assertListEqual([mock_join], self.task_pool._before_gathering)
|
||||
mock_join_queue.assert_called_once_with(output_q)
|
||||
mock__queue_producer.assert_called_once_with(output_q, args_iter)
|
||||
mock_create_task.assert_called_once_with(mock_producer_coro)
|
||||
@patch.object(pool, 'join_queue', new_callable=MagicMock)
|
||||
@patch.object(pool, 'Queue')
|
||||
@patch.object(pool, 'TaskGroupRegister')
|
||||
@patch.object(pool.BaseTaskPool, '_check_start')
|
||||
async def test__map(self, mock__check_start: MagicMock, mock_reg_cls: MagicMock, mock_queue_cls: MagicMock,
|
||||
mock_join_queue: MagicMock, mock__queue_producer: MagicMock, mock__queue_consumer: MagicMock,
|
||||
mock_create_task: MagicMock):
|
||||
mock_group_reg = set_up_mock_group_register(mock_reg_cls)
|
||||
mock_queue_cls.return_value = mock_q = MagicMock()
|
||||
mock_join_queue.return_value = fake_join = object()
|
||||
mock__queue_producer.return_value = fake_producer = object()
|
||||
mock__queue_consumer.return_value = fake_consumer = object()
|
||||
fake_task1, fake_task2 = object(), object()
|
||||
mock_create_task.side_effect = [fake_task1, fake_task2]
|
||||
|
||||
self.task_pool._before_gathering.clear()
|
||||
mock_join_queue.reset_mock()
|
||||
mock__queue_producer.reset_mock()
|
||||
mock_create_task.reset_mock()
|
||||
|
||||
num_tasks = 6
|
||||
mock_iter.return_value = args_iter = iter(args)
|
||||
output_q = self.task_pool._set_up_args_queue(args, num_tasks)
|
||||
self.assertIsInstance(output_q, Queue)
|
||||
self.assertEqual(len(args), output_q.qsize())
|
||||
for arg in args:
|
||||
self.assertEqual(arg, output_q.get_nowait())
|
||||
self.assertTrue(output_q.empty())
|
||||
with self.assertRaises(StopIteration):
|
||||
next(args_iter)
|
||||
self.assertListEqual([mock_join], self.task_pool._before_gathering)
|
||||
mock_join_queue.assert_called_once_with(output_q)
|
||||
mock__queue_producer.assert_not_called()
|
||||
mock_create_task.assert_not_called()
|
||||
|
||||
@patch.object(pool, 'Event')
|
||||
@patch.object(pool.TaskPool, '_queue_consumer')
|
||||
@patch.object(pool.TaskPool, '_set_up_args_queue')
|
||||
async def test__map(self, mock__set_up_args_queue: MagicMock, mock__queue_consumer: AsyncMock,
|
||||
mock_event_cls: MagicMock):
|
||||
qsize = 4
|
||||
mock__set_up_args_queue.return_value = mock_q = MagicMock(qsize=MagicMock(return_value=qsize))
|
||||
mock_flag_set = MagicMock()
|
||||
mock_event_cls.return_value = mock_flag = MagicMock(set=mock_flag_set)
|
||||
|
||||
mock_func, stars = MagicMock(), 3
|
||||
args_iter, group_size = (FOO, BAR, 1, 2, 3), 2
|
||||
group_name, group_size = 'onetwothree', 0
|
||||
func, arg_iter, stars = AsyncMock(), [55, 66, 77], 3
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
|
||||
self.task_pool._locked = False
|
||||
with self.assertRaises(exceptions.PoolIsLocked):
|
||||
await self.task_pool._map(mock_func, args_iter, stars, group_size, end_cb, cancel_cb)
|
||||
mock__set_up_args_queue.assert_not_called()
|
||||
mock__queue_consumer.assert_not_awaited()
|
||||
mock_flag_set.assert_not_called()
|
||||
with self.assertRaises(ValueError):
|
||||
await self.task_pool._map(group_name, group_size, func, arg_iter, stars, end_cb, cancel_cb)
|
||||
mock__check_start.assert_called_once_with(function=func)
|
||||
|
||||
self.task_pool._locked = True
|
||||
self.assertIsNone(await self.task_pool._map(mock_func, args_iter, stars, group_size, end_cb, cancel_cb))
|
||||
mock__set_up_args_queue.assert_called_once_with(args_iter, group_size)
|
||||
mock__queue_consumer.assert_has_awaits(qsize * [call(mock_q, mock_flag, mock_func, arg_stars=stars,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)])
|
||||
mock_flag_set.assert_called_once_with()
|
||||
mock__check_start.reset_mock()
|
||||
|
||||
group_size = 1234
|
||||
self.task_pool._task_groups = {group_name: MagicMock()}
|
||||
|
||||
with self.assertRaises(exceptions.InvalidGroupName):
|
||||
await self.task_pool._map(group_name, group_size, func, arg_iter, stars, end_cb, cancel_cb)
|
||||
mock__check_start.assert_called_once_with(function=func)
|
||||
|
||||
mock__check_start.reset_mock()
|
||||
|
||||
self.task_pool._task_groups.clear()
|
||||
self.task_pool._before_gathering = []
|
||||
|
||||
self.assertIsNone(await self.task_pool._map(group_name, group_size, func, arg_iter, stars, end_cb, cancel_cb))
|
||||
mock__check_start.assert_called_once_with(function=func)
|
||||
mock_reg_cls.assert_called_once_with()
|
||||
self.task_pool._task_groups[group_name] = mock_group_reg
|
||||
mock_group_reg.__aenter__.assert_awaited_once_with()
|
||||
mock_queue_cls.assert_called_once_with(maxsize=group_size)
|
||||
mock_join_queue.assert_called_once_with(mock_q)
|
||||
self.assertListEqual([fake_join], self.task_pool._before_gathering)
|
||||
mock__queue_producer.assert_called_once()
|
||||
mock__queue_consumer.assert_called_once_with(mock_q, group_name, func, stars, end_cb, cancel_cb)
|
||||
mock_create_task.assert_has_calls([call(fake_producer), call(fake_consumer)])
|
||||
self.assertSetEqual({fake_task1, fake_task2}, self.task_pool._group_meta_tasks_running[group_name])
|
||||
mock_group_reg.__aexit__.assert_awaited_once()
|
||||
|
||||
@patch.object(pool.TaskPool, '_map')
|
||||
async def test_map(self, mock__map: AsyncMock):
|
||||
@patch.object(pool.TaskPool, '_generate_group_name')
|
||||
async def test_map(self, mock__generate_group_name: MagicMock, mock__map: AsyncMock):
|
||||
mock__generate_group_name.return_value = generated_name = 'name 1 2 3'
|
||||
mock_func = MagicMock()
|
||||
arg_iter, group_size = (FOO, BAR, 1, 2, 3), 2
|
||||
arg_iter, group_size, group_name = (FOO, BAR, 1, 2, 3), 2, FOO + BAR
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool.map(mock_func, arg_iter, group_size, end_cb, cancel_cb))
|
||||
mock__map.assert_awaited_once_with(mock_func, arg_iter, arg_stars=0, group_size=group_size,
|
||||
output = await self.task_pool.map(mock_func, arg_iter, group_size, group_name, end_cb, cancel_cb)
|
||||
self.assertEqual(group_name, output)
|
||||
mock__map.assert_awaited_once_with(group_name, group_size, mock_func, arg_iter, 0,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__generate_group_name.assert_not_called()
|
||||
|
||||
mock__map.reset_mock()
|
||||
output = await self.task_pool.map(mock_func, arg_iter, group_size, None, end_cb, cancel_cb)
|
||||
self.assertEqual(generated_name, output)
|
||||
mock__map.assert_awaited_once_with(generated_name, group_size, mock_func, arg_iter, 0,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__generate_group_name.assert_called_once_with('map', mock_func)
|
||||
|
||||
@patch.object(pool.TaskPool, '_map')
|
||||
async def test_starmap(self, mock__map: AsyncMock):
|
||||
@patch.object(pool.TaskPool, '_generate_group_name')
|
||||
async def test_starmap(self, mock__generate_group_name: MagicMock, mock__map: AsyncMock):
|
||||
mock__generate_group_name.return_value = generated_name = 'name 1 2 3'
|
||||
mock_func = MagicMock()
|
||||
args_iter, group_size = ([FOO], [BAR]), 2
|
||||
args_iter, group_size, group_name = ([FOO], [BAR]), 2, FOO + BAR
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool.starmap(mock_func, args_iter, group_size, end_cb, cancel_cb))
|
||||
mock__map.assert_awaited_once_with(mock_func, args_iter, arg_stars=1, group_size=group_size,
|
||||
output = await self.task_pool.starmap(mock_func, args_iter, group_size, group_name, end_cb, cancel_cb)
|
||||
self.assertEqual(group_name, output)
|
||||
mock__map.assert_awaited_once_with(group_name, group_size, mock_func, args_iter, 1,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__generate_group_name.assert_not_called()
|
||||
|
||||
mock__map.reset_mock()
|
||||
output = await self.task_pool.starmap(mock_func, args_iter, group_size, None, end_cb, cancel_cb)
|
||||
self.assertEqual(generated_name, output)
|
||||
mock__map.assert_awaited_once_with(generated_name, group_size, mock_func, args_iter, 1,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__generate_group_name.assert_called_once_with('starmap', mock_func)
|
||||
|
||||
@patch.object(pool.TaskPool, '_map')
|
||||
async def test_doublestarmap(self, mock__map: AsyncMock):
|
||||
@patch.object(pool.TaskPool, '_generate_group_name')
|
||||
async def test_doublestarmap(self, mock__generate_group_name: MagicMock, mock__map: AsyncMock):
|
||||
mock__generate_group_name.return_value = generated_name = 'name 1 2 3'
|
||||
mock_func = MagicMock()
|
||||
kwargs_iter, group_size = [{'a': FOO}, {'a': BAR}], 2
|
||||
kwargs_iter, group_size, group_name = [{'a': FOO}, {'a': BAR}], 2, FOO + BAR
|
||||
end_cb, cancel_cb = MagicMock(), MagicMock()
|
||||
self.assertIsNone(await self.task_pool.doublestarmap(mock_func, kwargs_iter, group_size, end_cb, cancel_cb))
|
||||
mock__map.assert_awaited_once_with(mock_func, kwargs_iter, arg_stars=2, group_size=group_size,
|
||||
output = await self.task_pool.doublestarmap(mock_func, kwargs_iter, group_size, group_name, end_cb, cancel_cb)
|
||||
self.assertEqual(group_name, output)
|
||||
mock__map.assert_awaited_once_with(group_name, group_size, mock_func, kwargs_iter, 2,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__generate_group_name.assert_not_called()
|
||||
|
||||
mock__map.reset_mock()
|
||||
output = await self.task_pool.doublestarmap(mock_func, kwargs_iter, group_size, None, end_cb, cancel_cb)
|
||||
self.assertEqual(generated_name, output)
|
||||
mock__map.assert_awaited_once_with(generated_name, group_size, mock_func, kwargs_iter, 2,
|
||||
end_callback=end_cb, cancel_callback=cancel_cb)
|
||||
mock__generate_group_name.assert_called_once_with('doublestarmap', mock_func)
|
||||
|
||||
|
||||
class SimpleTaskPoolTestCase(CommonTestCase):
|
||||
@ -667,7 +806,7 @@ class SimpleTaskPoolTestCase(CommonTestCase):
|
||||
def test_stop(self, mock_cancel: MagicMock):
|
||||
num = 2
|
||||
id1, id2, id3 = 5, 6, 7
|
||||
self.task_pool._running = {id1: FOO, id2: BAR, id3: FOO + BAR}
|
||||
self.task_pool._tasks_running = {id1: FOO, id2: BAR, id3: FOO + BAR}
|
||||
output = self.task_pool.stop(num)
|
||||
expected_output = [id3, id2]
|
||||
self.assertEqual(expected_output, output)
|
||||
@ -689,3 +828,10 @@ class SimpleTaskPoolTestCase(CommonTestCase):
|
||||
self.assertEqual(expected_output, output)
|
||||
mock_num_running.assert_called_once_with()
|
||||
mock_stop.assert_called_once_with(num)
|
||||
|
||||
|
||||
def set_up_mock_group_register(mock_reg_cls: MagicMock) -> MagicMock:
|
||||
mock_grp_aenter, mock_grp_aexit, mock_grp_add = AsyncMock(), AsyncMock(), MagicMock()
|
||||
mock_reg_cls.return_value = mock_group_reg = MagicMock(__aenter__=mock_grp_aenter, __aexit__=mock_grp_aexit,
|
||||
add=mock_grp_add)
|
||||
return mock_group_reg
|
||||
|
||||
195
usage/USAGE.md
195
usage/USAGE.md
@ -28,7 +28,7 @@ async def work(n: int) -> None:
|
||||
"""
|
||||
for i in range(n):
|
||||
await asyncio.sleep(1)
|
||||
print("did", i)
|
||||
print("> did", i)
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
@ -39,7 +39,7 @@ async def main() -> None:
|
||||
await asyncio.sleep(1.5) # lets the tasks work for a bit
|
||||
pool.stop(2) # cancels tasks 3 and 2
|
||||
pool.lock() # required for the last line
|
||||
await pool.gather() # awaits all tasks, then flushes the pool
|
||||
await pool.gather_and_close() # awaits all tasks, then flushes the pool
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
@ -52,29 +52,29 @@ SimpleTaskPool-0 initialized
|
||||
Started SimpleTaskPool-0_Task-0
|
||||
Started SimpleTaskPool-0_Task-1
|
||||
Started SimpleTaskPool-0_Task-2
|
||||
did 0
|
||||
did 0
|
||||
did 0
|
||||
> did 0
|
||||
> did 0
|
||||
> did 0
|
||||
Started SimpleTaskPool-0_Task-3
|
||||
did 1
|
||||
did 1
|
||||
did 1
|
||||
did 0
|
||||
> did 1
|
||||
> did 1
|
||||
> did 1
|
||||
> did 0
|
||||
> did 2
|
||||
> did 2
|
||||
SimpleTaskPool-0 is locked!
|
||||
Cancelling SimpleTaskPool-0_Task-3 ...
|
||||
Cancelled SimpleTaskPool-0_Task-3
|
||||
Ended SimpleTaskPool-0_Task-3
|
||||
Cancelling SimpleTaskPool-0_Task-2 ...
|
||||
Cancelled SimpleTaskPool-0_Task-2
|
||||
Ended SimpleTaskPool-0_Task-2
|
||||
did 2
|
||||
did 2
|
||||
did 3
|
||||
did 3
|
||||
Cancelling SimpleTaskPool-0_Task-3 ...
|
||||
Cancelled SimpleTaskPool-0_Task-3
|
||||
Ended SimpleTaskPool-0_Task-3
|
||||
> did 3
|
||||
> did 3
|
||||
Ended SimpleTaskPool-0_Task-0
|
||||
Ended SimpleTaskPool-0_Task-1
|
||||
did 4
|
||||
did 4
|
||||
> did 4
|
||||
> did 4
|
||||
```
|
||||
|
||||
## Advanced example for `TaskPool`
|
||||
@ -101,21 +101,21 @@ async def work(start: int, stop: int, step: int = 1) -> None:
|
||||
"""Pseudo-worker function counting through a range with a second of sleep in between each iteration."""
|
||||
for i in range(start, stop, step):
|
||||
await asyncio.sleep(1)
|
||||
print("work with", i)
|
||||
print("> work with", i)
|
||||
|
||||
|
||||
async def other_work(a: int, b: int) -> None:
|
||||
"""Different pseudo-worker counting through a range with half a second of sleep in between each iteration."""
|
||||
for i in range(a, b):
|
||||
await asyncio.sleep(0.5)
|
||||
print("other_work with", i)
|
||||
print("> other_work with", i)
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
# Initialize a new task pool instance and limit its size to 3 tasks.
|
||||
pool = TaskPool(3)
|
||||
# Queue up two tasks (IDs 0 and 1) to run concurrently (with the same positional arguments).
|
||||
print("Called `apply`")
|
||||
print("> Called `apply`")
|
||||
await pool.apply(work, kwargs={'start': 100, 'stop': 200, 'step': 10}, num=2)
|
||||
# Let the tasks work for a bit.
|
||||
await asyncio.sleep(1.5)
|
||||
@ -124,20 +124,18 @@ async def main() -> None:
|
||||
# Since we set our pool size to 3, and already have two tasks working within the pool,
|
||||
# only the first one of these will start immediately (and receive ID 2).
|
||||
# The second one will start (with ID 3), only once there is room in the pool,
|
||||
# which -- in this example -- will be the case after ID 2 ends;
|
||||
# until then the `starmap` method call **will block**!
|
||||
# which -- in this example -- will be the case after ID 2 ends.
|
||||
# Once there is room in the pool again, the third and fourth will each start (with IDs 4 and 5)
|
||||
# **only** once there is room in the pool **and** no more than one of these last four tasks is running.
|
||||
# **only** once there is room in the pool **and** no more than one other task of these new ones is running.
|
||||
args_list = [(0, 10), (10, 20), (20, 30), (30, 40)]
|
||||
print("Calling `starmap`...")
|
||||
await pool.starmap(other_work, args_list, group_size=2)
|
||||
print("`starmap` returned")
|
||||
print("> Called `starmap`")
|
||||
# Now we lock the pool, so that we can safely await all our tasks.
|
||||
pool.lock()
|
||||
# Finally, we block, until all tasks have ended.
|
||||
print("Called `gather`")
|
||||
await pool.gather()
|
||||
print("Done.")
|
||||
print("> Calling `gather_and_close`...")
|
||||
await pool.gather_and_close()
|
||||
print("> Done.")
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
@ -152,82 +150,81 @@ Additional comments for the output are provided with `<---` next to the output l
|
||||
TaskPool-0 initialized
|
||||
Started TaskPool-0_Task-0
|
||||
Started TaskPool-0_Task-1
|
||||
Called `apply`
|
||||
work with 100
|
||||
work with 100
|
||||
Calling `starmap`... <--- notice that this blocks as expected
|
||||
Started TaskPool-0_Task-2
|
||||
work with 110
|
||||
work with 110
|
||||
other_work with 0
|
||||
other_work with 1
|
||||
work with 120
|
||||
work with 120
|
||||
other_work with 2
|
||||
other_work with 3
|
||||
work with 130
|
||||
work with 130
|
||||
other_work with 4
|
||||
other_work with 5
|
||||
work with 140
|
||||
work with 140
|
||||
other_work with 6
|
||||
other_work with 7
|
||||
work with 150
|
||||
work with 150
|
||||
other_work with 8
|
||||
Ended TaskPool-0_Task-2 <--- here Task-2 makes room in the pool and unblocks `main()`
|
||||
> Called `apply`
|
||||
> work with 100
|
||||
> work with 100
|
||||
> Called `starmap` <--- notice that this immediately returns, even before Task-2 is started
|
||||
> Calling `gather_and_close`... <--- this blocks `main()` until all tasks have ended
|
||||
TaskPool-0 is locked!
|
||||
Started TaskPool-0_Task-2 <--- at this point the pool is full
|
||||
> work with 110
|
||||
> work with 110
|
||||
> other_work with 0
|
||||
> other_work with 1
|
||||
> work with 120
|
||||
> work with 120
|
||||
> other_work with 2
|
||||
> other_work with 3
|
||||
> work with 130
|
||||
> work with 130
|
||||
> other_work with 4
|
||||
> other_work with 5
|
||||
> work with 140
|
||||
> work with 140
|
||||
> other_work with 6
|
||||
> other_work with 7
|
||||
> work with 150
|
||||
> work with 150
|
||||
> other_work with 8
|
||||
Ended TaskPool-0_Task-2 <--- this frees up room for one more task from `starmap`
|
||||
Started TaskPool-0_Task-3
|
||||
other_work with 9
|
||||
`starmap` returned
|
||||
Called `gather` <--- now this will block `main()` until all tasks have ended
|
||||
work with 160
|
||||
work with 160
|
||||
other_work with 10
|
||||
other_work with 11
|
||||
work with 170
|
||||
work with 170
|
||||
other_work with 12
|
||||
other_work with 13
|
||||
work with 180
|
||||
work with 180
|
||||
other_work with 14
|
||||
other_work with 15
|
||||
> other_work with 9
|
||||
> work with 160
|
||||
> work with 160
|
||||
> other_work with 10
|
||||
> other_work with 11
|
||||
> work with 170
|
||||
> work with 170
|
||||
> other_work with 12
|
||||
> other_work with 13
|
||||
> work with 180
|
||||
> work with 180
|
||||
> other_work with 14
|
||||
> other_work with 15
|
||||
Ended TaskPool-0_Task-0
|
||||
Ended TaskPool-0_Task-1 <--- even though there is room in the pool now, Task-5 will not start
|
||||
Started TaskPool-0_Task-4
|
||||
work with 190
|
||||
work with 190
|
||||
other_work with 16
|
||||
other_work with 20
|
||||
other_work with 17
|
||||
other_work with 21
|
||||
other_work with 18
|
||||
other_work with 22
|
||||
other_work with 19
|
||||
Ended TaskPool-0_Task-3 <--- now that only Task-4 is left, Task-5 will start
|
||||
Ended TaskPool-0_Task-1 <--- these two end and free up two more slots in the pool
|
||||
Started TaskPool-0_Task-4 <--- since the group size is set to 2, Task-5 will not start
|
||||
> work with 190
|
||||
> work with 190
|
||||
> other_work with 16
|
||||
> other_work with 17
|
||||
> other_work with 20
|
||||
> other_work with 18
|
||||
> other_work with 21
|
||||
Ended TaskPool-0_Task-3 <--- now that only Task-4 of the group remains, Task-5 starts
|
||||
Started TaskPool-0_Task-5
|
||||
other_work with 23
|
||||
other_work with 30
|
||||
other_work with 24
|
||||
other_work with 31
|
||||
other_work with 25
|
||||
other_work with 32
|
||||
other_work with 26
|
||||
other_work with 33
|
||||
other_work with 27
|
||||
other_work with 34
|
||||
other_work with 28
|
||||
other_work with 35
|
||||
> other_work with 19
|
||||
> other_work with 22
|
||||
> other_work with 23
|
||||
> other_work with 30
|
||||
> other_work with 24
|
||||
> other_work with 31
|
||||
> other_work with 25
|
||||
> other_work with 32
|
||||
> other_work with 26
|
||||
> other_work with 33
|
||||
> other_work with 27
|
||||
> other_work with 34
|
||||
> other_work with 28
|
||||
> other_work with 35
|
||||
> other_work with 29
|
||||
> other_work with 36
|
||||
Ended TaskPool-0_Task-4
|
||||
other_work with 29
|
||||
other_work with 36
|
||||
other_work with 37
|
||||
other_work with 38
|
||||
other_work with 39
|
||||
Done.
|
||||
> other_work with 37
|
||||
> other_work with 38
|
||||
> other_work with 39
|
||||
Ended TaskPool-0_Task-5
|
||||
> Done.
|
||||
```
|
||||
|
||||
© 2022 Daniil Fajnberg
|
||||
|
||||
@ -74,12 +74,12 @@ async def main() -> None:
|
||||
control_server_task.cancel()
|
||||
# Since our workers should now be stuck waiting for more items to pick from the queue, but no items are left,
|
||||
# we can now safely cancel their tasks.
|
||||
pool.stop_all()
|
||||
pool.lock()
|
||||
pool.stop_all()
|
||||
# Finally we allow for all tasks to do do their cleanup, if they need to do any, upon being cancelled.
|
||||
# We block until they all return or raise an exception, but since we are not interested in any of their exceptions,
|
||||
# we just silently collect their exceptions along with their return values.
|
||||
await pool.gather(return_exceptions=True)
|
||||
await pool.gather_and_close(return_exceptions=True)
|
||||
await control_server_task
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user