def test_close(self):
conn = Connection("localhost", 1234)
conn.stream = Mock()
self.assertEqual(conn.closing, False)
conn.close()
self.assertEqual(conn.closing, True)
conn.stream.close.assert_called_once_with()
def test_close(self):
conn = Connection("localhost", 1234)
conn.stream = Mock()
self.assertEqual(conn.closing, False)
conn.close()
self.assertEqual(conn.closing, True)
conn.stream.close.assert_called_once_with()
def test_connect_sets_stream(self, IOStream):
IOStream.return_value.connect.return_value = self.future_value(None)
conn = Connection("localhost", 1234)
self.assertEqual(conn.stream, None)
yield conn.connect()
self.assertEqual(conn.stream, IOStream.return_value)
IOStream.return_value.connect.assert_called_once_with(
("localhost", 1234))
def test_send_when_closing_causes_error(self):
error = None
conn = Connection("localhost", 1234)
conn.closing = True
try:
yield conn.send(Mock())
except exc.BrokerConnectionError as e:
error = e
self.assertEqual(error.host, "localhost")
self.assertEqual(error.port, 1234)
def test_connect_sets_stream(self, IOStream):
IOStream.return_value.connect.return_value = self.future_value(None)
conn = Connection("localhost", 1234)
self.assertEqual(conn.stream, None)
yield conn.connect()
self.assertEqual(conn.stream, IOStream.return_value)
IOStream.return_value.connect.assert_called_once_with(
("localhost", 1234)
)
def test_send_when_closing_causes_error(self):
error = None
conn = Connection("localhost", 1234)
conn.closing = True
try:
yield conn.send(Mock())
except exc.BrokerConnectionError as e:
error = e
self.assertEqual(error.host, "localhost")
self.assertEqual(error.port, 1234)
def test_abort_fails_all_pending_requests(self, read_message):
request1 = metadata.MetadataRequest()
request2 = metadata.MetadataRequest(topics=["example.foo"])
mock_responses = [
Mock(correlation_id=request1.correlation_id),
Mock(correlation_id=request2.correlation_id),
]
def get_next_response(*args):
return self.future_value(mock_responses.pop(0))
read_message.side_effect = get_next_response
conn = Connection("localhost", 1234)
conn.stream = Mock()
conn.stream.write.return_value = self.future_value(None)
responses = [conn.send(request1), conn.send(request2)]
conn.abort()
conn.abort() # second abort is a no-op
for response in responses:
error = response.exception()
self.assertEqual(error.host, "localhost")
self.assertEqual(error.port, 1234)
def test_immediate_error_writing_to_stream_aborts(self):
class FakeException(Exception):
pass
conn = Connection("localhost", 1234)
conn.stream = Mock()
conn.stream.write.side_effect = FakeException("oh no!")
error = None
try:
yield conn.send(metadata.MetadataRequest())
except FakeException as e:
error = e
self.assertEqual(str(error), "oh no!")
self.assertEqual(conn.closing, True)
conn.stream.close.assert_called_once_with()
def test_immediate_error_writing_to_stream_aborts(self):
class FakeException(Exception):
pass
conn = Connection("localhost", 1234)
conn.stream = Mock()
conn.stream.write.side_effect = FakeException("oh no!")
error = None
try:
yield conn.send(metadata.MetadataRequest())
except FakeException as e:
error = e
self.assertEqual(str(error), "oh no!")
self.assertEqual(conn.closing, True)
conn.stream.close.assert_called_once_with()
def test_abort_fails_all_pending_requests(self, read_message):
request1 = metadata.MetadataRequest()
request2 = metadata.MetadataRequest(topics=["example.foo"])
mock_responses = [
Mock(correlation_id=request1.correlation_id),
Mock(correlation_id=request2.correlation_id),
]
def get_next_response(*args):
return self.future_value(mock_responses.pop(0))
read_message.side_effect = get_next_response
conn = Connection("localhost", 1234)
conn.stream = Mock()
conn.stream.write.return_value = self.future_value(None)
responses = [conn.send(request1), conn.send(request2)]
conn.abort()
conn.abort() # second abort is a no-op
for response in responses:
error = response.exception()
self.assertEqual(error.host, "localhost")
self.assertEqual(error.port, 1234)
def test_correlates_responses(self, read_message):
request1 = metadata.MetadataRequest()
request2 = metadata.MetadataRequest(topics=["example.foo"])
response1 = metadata.MetadataResponse(
brokers=[metadata.Broker(broker_id=1, host="broker01", port=333)],
topics=[
metadata.TopicMetadata(error_code=0, name="example.foo"),
metadata.TopicMetadata(error_code=0, name="example.bar"),
]
)
response1.correlation_id = request1.correlation_id
response2 = metadata.MetadataResponse(
brokers=[metadata.Broker(broker_id=1, host="broker01", port=333)],
topics=[
metadata.TopicMetadata(error_code=0, name="example.foo"),
]
)
response2.correlation_id = request2.correlation_id
# response2 comes over the wire before response1
responses = [response2, response1]
def get_next_response(*args):
return self.future_value(responses.pop(0))
read_message.side_effect = get_next_response
conn = Connection("localhost", 1234)
conn.stream = Mock()
conn.stream.write.return_value = self.future_value(None)
actual_responses = [conn.send(request1), conn.send(request2)]
yield conn.read_loop()
# first response is the one with two topics
self.assertEqual(len(actual_responses[0].result().topics), 2)
self.assertEqual(len(actual_responses[1].result().topics), 1)
def test_correlates_responses(self, read_message):
request1 = metadata.MetadataRequest()
request2 = metadata.MetadataRequest(topics=["example.foo"])
response1 = metadata.MetadataResponse(
brokers=[metadata.Broker(broker_id=1, host="broker01", port=333)],
topics=[
metadata.TopicMetadata(error_code=0, name="example.foo"),
metadata.TopicMetadata(error_code=0, name="example.bar"),
])
response1.correlation_id = request1.correlation_id
response2 = metadata.MetadataResponse(
brokers=[metadata.Broker(broker_id=1, host="broker01", port=333)],
topics=[
metadata.TopicMetadata(error_code=0, name="example.foo"),
])
response2.correlation_id = request2.correlation_id
# response2 comes over the wire before response1
responses = [response2, response1]
def get_next_response(*args):
return self.future_value(responses.pop(0))
read_message.side_effect = get_next_response
conn = Connection("localhost", 1234)
conn.stream = Mock()
conn.stream.write.return_value = self.future_value(None)
actual_responses = [conn.send(request1), conn.send(request2)]
yield conn.read_loop()
# first response is the one with two topics
self.assertEqual(len(actual_responses[0].result().topics), 2)
self.assertEqual(len(actual_responses[1].result().topics), 1)
def test_read_message(self):
response_format = "".join([
"!", "i", "i", "h%dsi" % len("broker01"), # array of brokers
"i", "hh%ds" % len("example.foo"), # array of topics
"i", # subarray of partitions
"hii", "i", "ii", "i", "i", # partition 1 details
"hii", "i", "ii", "i", "ii", # partition 2 details
])
raw_response = struct.pack(
response_format,
1, # there is 1 broker
8, len("broker01"), b"broker01", 1234, # broker id,host,port
1, # there is 1 topic
0, len("example.foo"), b"example.foo", # topic name, no error
2, # there are 2 topics
0, 1, 1, # partition ID 1, leader is broker 1
2, 2, 3, 1, 2, # two replicas: on 2 & 3, one ISR: broker 2
0, 2, 3, # partition ID 2, leader is broker 3
2, 1, 2, 2, 2, 1, # two replicas: on 1 & 2, both are in ISR set
)
raw_data = [
# size of full response (incl. correlation)
struct.pack("!i", struct.calcsize(response_format) + 4),
struct.pack("!i", 555), # correlation id
raw_response
]
def get_raw_data(*args):
return self.future_value(raw_data.pop(0))
conn = Connection("localhost", 1234)
conn.api_correlation = {555: "metadata"}
conn.stream = Mock()
conn.stream.read_bytes.side_effect = get_raw_data
message = yield conn.read_message()
expected = metadata.MetadataResponse(
brokers=[
metadata.Broker(broker_id=8, host="broker01", port=1234)
],
topics=[
metadata.TopicMetadata(
error_code=0, name="example.foo",
partitions=[
metadata.PartitionMetadata(
error_code=0,
partition_id=1,
leader=1,
replicas=[2, 3],
isrs=[2]
),
metadata.PartitionMetadata(
error_code=0,
partition_id=2,
leader=3,
replicas=[1, 2],
isrs=[2, 1]
),
]
),
]
)
self.assertEqual(message, expected)
def test_read_message(self):
response_format = "".join([
"!",
"i",
"i",
"h%dsi" % len("broker01"), # array of brokers
"i",
"hh%ds" % len("example.foo"), # array of topics
"i", # subarray of partitions
"hii",
"i",
"ii",
"i",
"i", # partition 1 details
"hii",
"i",
"ii",
"i",
"ii", # partition 2 details
])
raw_response = struct.pack(
response_format,
1, # there is 1 broker
8,
len("broker01"),
b"broker01",
1234, # broker id,host,port
1, # there is 1 topic
0,
len("example.foo"),
b"example.foo", # topic name, no error
2, # there are 2 topics
0,
1,
1, # partition ID 1, leader is broker 1
2,
2,
3,
1,
2, # two replicas: on 2 & 3, one ISR: broker 2
0,
2,
3, # partition ID 2, leader is broker 3
2,
1,
2,
2,
2,
1, # two replicas: on 1 & 2, both are in ISR set
)
raw_data = [
# size of full response (incl. correlation)
struct.pack("!i",
struct.calcsize(response_format) + 4),
struct.pack("!i", 555), # correlation id
raw_response
]
def get_raw_data(*args):
return self.future_value(raw_data.pop(0))
conn = Connection("localhost", 1234)
conn.api_correlation = {555: "metadata"}
conn.stream = Mock()
conn.stream.read_bytes.side_effect = get_raw_data
message = yield conn.read_message()
expected = metadata.MetadataResponse(
brokers=[metadata.Broker(broker_id=8, host="broker01", port=1234)],
topics=[
metadata.TopicMetadata(
error_code=0,
name="example.foo",
partitions=[
metadata.PartitionMetadata(error_code=0,
partition_id=1,
leader=1,
replicas=[2, 3],
isrs=[2]),
metadata.PartitionMetadata(error_code=0,
partition_id=2,
leader=3,
replicas=[1, 2],
isrs=[2, 1]),
]),
])
self.assertEqual(message, expected)
