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Merged
merged 3 commits into from
Jun 17, 2020
Merged

Update singleton_thread_locals.py #252

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f6751ce
Update singleton_thread_locals.py
RobinsonMa Jun 16, 2020
4e6fc27
Update singleton_thread_locals.py
RobinsonMa Jun 16, 2020
fda3083
Update singleton_thread_locals.py
RobinsonMa Jun 17, 2020
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14 changes: 7 additions & 7 deletions examples/providers/singleton_thread_locals.py
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Original file line number Diff line number Diff line change
@@ -1,26 +1,26 @@
"""`ThreadLocalSingleton` providers example."""

import threading
import Queue
import queue

import dependency_injector.providers as providers


def example(example_object, queue):
def example(example_object, queue_object):
"""Put provided object in the provided queue."""
queue.put(example_object)
queue_object.put(example_object)


# Create thread-local singleton provider for some object (main thread):
thread_local_object = providers.ThreadLocalSingleton(object)

# Create singleton provider for thread-safe queue:
queue = providers.Singleton(Queue.Queue)
queue_factory = providers.ThreadSafeSingleton(queue.Queue)

# Create callable provider for example(), inject dependencies:
example = providers.DelegatedCallable(example,
example_object=thread_local_object,
queue=queue)
queue_object=queue_factory)

# Create factory provider for threads that are targeted to execute example():
thread_factory = providers.Factory(threading.Thread,
Expand All @@ -43,8 +43,8 @@ def example(example_object, queue):
# Making some asserts (main thread):
all_objects = set()

while not queue().empty():
all_objects.add(queue().get())
while not queue_factory().empty():
all_objects.add(queue_factory().get())

assert len(all_objects) == len(threads)
# Queue contains same number of objects as number of threads where
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