def test_lazy_connections(self):
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn, 10)
with ctpe as pool:
# Submit multiple jobs sequentially - should only use 1 conn
f = pool.submit(self._func, "succeed")
f.result()
f = pool.submit(self._func, "succeed")
f.result()
f = pool.submit(self._func, "succeed")
f.result()
expected_connections = [(0, "This is a connection")]
expected_connections.extend([(x, None) for x in range(1, 10)])
self.assertQueueContains(pool._connections, expected_connections)
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn, 10)
with ctpe as pool:
fs = []
f1 = pool.submit(self._func, "sleep")
f2 = pool.submit(self._func, "sleep")
f3 = pool.submit(self._func, "sleep")
fs.extend([f1, f2, f3])
expected_connections = [(0, "This is a connection"),
(1, "This is a connection"),
(2, "This is a connection")]
expected_connections.extend([(x, None) for x in range(3, 10)])
for f in as_completed(fs):
f.result()
self.assertQueueContains(pool._connections, expected_connections)
def test_submit_good_connection(self):
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn, 1)
with ctpe as pool:
# Try submitting a job that should succeed
f = pool.submit(self._func, "succeed")
f.result()
self.assertQueueContains(self.got_items,
[("This is a connection", "succeed")])
# Now a job that fails
went_boom = False
try:
f = pool.submit(self._func, "go boom")
f.result()
except Exception as e:
went_boom = True
self.assertEquals('I went boom!', str(e))
self.assertTrue(went_boom)
# Has the connection been returned to the pool?
f = pool.submit(self._func, "succeed")
f.result()
self.assertQueueContains(self.got_items,
[("This is a connection", "go boom"),
("This is a connection", "succeed")])
def test_submit_bad_connection(self):
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn_fail, 1)
with ctpe as pool:
# Now a connection that fails
try:
f = pool.submit(self._func, "succeed")
f.result()
except Exception as e:
self.assertEqual('This is a failed connection', str(e))
else:
self.fail('The connection did not fail')
# Make sure we don't lock up on failed connections
try:
f = pool.submit(self._func, "go boom")
f.result()
except Exception as e:
self.assertEqual('This is a failed connection', str(e))
else:
self.fail('The connection did not fail')
