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More type annotations.
[python_utils.git]
/
smart_future.py
diff --git
a/smart_future.py
b/smart_future.py
index c097d53b7c849867db4dd7f81121097397d0bee3..1f6e6f0aedcf05966e536ec8f10f570c2175a3e4 100644
(file)
--- a/
smart_future.py
+++ b/
smart_future.py
@@
-3,7
+3,9
@@
from __future__ import annotations
import concurrent
import concurrent.futures as fut
from __future__ import annotations
import concurrent
import concurrent.futures as fut
-from typing import Callable, List, TypeVar
+import logging
+import traceback
+from typing import Callable, List, Set, TypeVar
from overrides import overrides
from overrides import overrides
@@
-12,35
+14,68
@@
from overrides import overrides
from deferred_operand import DeferredOperand
import id_generator
from deferred_operand import DeferredOperand
import id_generator
+logger = logging.getLogger(__name__)
+
T = TypeVar('T')
T = TypeVar('T')
-def wait_any(futures: List[SmartFuture], *, callback: Callable = None):
+def wait_any(
+ futures: List[SmartFuture],
+ *,
+ callback: Callable = None,
+ log_exceptions: bool = True,
+):
real_futures = []
smart_future_by_real_future = {}
real_futures = []
smart_future_by_real_future = {}
- completed_futures = set()
- for _ in futures:
- real_futures.append(_.wrapped_future)
- smart_future_by_real_future[_.wrapped_future] = _
+ completed_futures: Set[fut.Future] = set()
+ for x in futures:
+ assert type(x) == SmartFuture
+ real_futures.append(x.wrapped_future)
+ smart_future_by_real_future[x.wrapped_future] = x
+
while len(completed_futures) != len(real_futures):
newly_completed_futures = concurrent.futures.as_completed(real_futures)
for f in newly_completed_futures:
if callback is not None:
callback()
completed_futures.add(f)
while len(completed_futures) != len(real_futures):
newly_completed_futures = concurrent.futures.as_completed(real_futures)
for f in newly_completed_futures:
if callback is not None:
callback()
completed_futures.add(f)
+ if log_exceptions and not f.cancelled():
+ exception = f.exception()
+ if exception is not None:
+ logger.warning(
+ f'Future {id(f)} raised an unhandled exception and exited.'
+ )
+ logger.exception(exception)
+ raise exception
yield smart_future_by_real_future[f]
if callback is not None:
callback()
return
yield smart_future_by_real_future[f]
if callback is not None:
callback()
return
-def wait_all(futures: List[SmartFuture]) -> None:
- real_futures = [x.wrapped_future for x in futures]
+def wait_all(
+ futures: List[SmartFuture],
+ *,
+ log_exceptions: bool = True,
+) -> None:
+ real_futures = []
+ for x in futures:
+ assert type(x) == SmartFuture
+ real_futures.append(x.wrapped_future)
+
(done, not_done) = concurrent.futures.wait(
(done, not_done) = concurrent.futures.wait(
- real_futures,
- timeout=None,
- return_when=concurrent.futures.ALL_COMPLETED
+ real_futures, timeout=None, return_when=concurrent.futures.ALL_COMPLETED
)
)
+ if log_exceptions:
+ for f in real_futures:
+ if not f.cancelled():
+ exception = f.exception()
+ if exception is not None:
+ logger.warning(
+ f'Future {id(f)} raised an unhandled exception and exited.'
+ )
+ logger.exception(exception)
+ raise exception
assert len(done) == len(real_futures)
assert len(not_done) == 0
assert len(done) == len(real_futures)
assert len(not_done) == 0
@@
-54,6
+89,7
@@
class SmartFuture(DeferredOperand):
"""
def __init__(self, wrapped_future: fut.Future) -> None:
"""
def __init__(self, wrapped_future: fut.Future) -> None:
+ assert type(wrapped_future) == fut.Future
self.wrapped_future = wrapped_future
self.id = id_generator.get("smart_future_id")
self.wrapped_future = wrapped_future
self.id = id_generator.get("smart_future_id")