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add idle runner #58

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add idle runner #58

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6 changes: 5 additions & 1 deletion sqs_listener/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
@version: 0.2.3
@license: Apache
"""
from typing import Callable

# ================
# start imports
Expand Down Expand Up @@ -61,6 +62,7 @@ def __init__(self, queue, **kwargs):
self._endpoint_name = kwargs.get('endpoint_name', None)
self._wait_time = kwargs.get('wait_time', 0)
self._max_number_of_messages = kwargs.get('max_number_of_messages', 1)
self._run_while_idle = kwargs.get('run_while_idle', None)

# must come last
if boto3_session:
Expand Down Expand Up @@ -90,7 +92,7 @@ def _initialize_client(self):
errorQueueExists = True


# create queue if necessary.
# create queue if necessary.
# creation is idempotent, no harm in calling on a queue if it already exists.
if self._queue_url is None:
if not mainQueueExists:
Expand Down Expand Up @@ -195,6 +197,8 @@ def _start_listening(self):
)

else:
if isinstance(self._run_while_idle, Callable):
self._run_while_idle()
time.sleep(self._poll_interval)

def listen(self):
Expand Down