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Copy pathtest_concurrency.py
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57 lines (47 loc) · 1.94 KB
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"""
Copyright 2025 Amazon.com, Inc. or its affiliates. All Rights Reserved.
"""
import multiprocessing
import unittest
from unittest.mock import patch, MagicMock
from awslambdaric.lambda_multi_concurrent_utils import MultiConcurrentRunner
class LambdaRuntimeConcurrencyTest(unittest.TestCase):
def setUp(self):
# common args
self.handler = "h.fn"
self.addr = "addr"
self.use_thread = False
self.socket = "/tmp/sock"
def test_success_and_failure_isolation(self):
multiprocessing.set_start_method("fork", force=True)
success_counter = multiprocessing.Value("i", 0)
fail_counter = multiprocessing.Value("i", 0)
process_index = multiprocessing.Value("i", 0)
def fake_bootstrap_run(handler, lambda_runtime_client):
with process_index.get_lock():
idx = process_index.value
process_index.value += 1
if idx % 2 == 0:
for _ in range(3):
with success_counter.get_lock():
success_counter.value += 1
else:
with fail_counter.get_lock():
fail_counter.value += 1
raise RuntimeError("Simulated failure")
with patch(
"awslambdaric.lambda_multi_concurrent_utils.MultiConcurrentRunner._redirect_output"
), patch(
"awslambdaric.lambda_multi_concurrent_utils.MultiConcurrentRunner._before_fork"
), patch(
"awslambdaric.lambda_multi_concurrent_utils.bootstrap.run",
side_effect=fake_bootstrap_run,
):
# spawn 4 multi-concurrent processes
MultiConcurrentRunner.run_concurrent(
self.handler, self.addr, self.use_thread, self.socket, max_concurrency=4
)
self.assertEqual(success_counter.value, 6)
self.assertEqual(fail_counter.value, 2)
if __name__ == "__main__":
unittest.main()