def test_to_json_string(self):
scaling_request = DynamiteScalingRequest()
scaling_request.failure_counter = 7
scaling_request.service_instance_name = "apache_service_instance_name"
scaling_request.service_name = "apache_service_name"
scaling_request.command = DynamiteScalingCommand.SCALE_DOWN
json = scaling_request.to_json_string()
copy = DynamiteScalingRequest.from_json_string(json)
assert copy == scaling_request
def test_to_json_string(self):
scaling_request = DynamiteScalingRequest()
scaling_request.failure_counter = 7
scaling_request.service_instance_name = "apache_service_instance_name"
scaling_request.service_name = "apache_service_name"
scaling_request.command = DynamiteScalingCommand.SCALE_DOWN
json = scaling_request.to_json_string()
copy = DynamiteScalingRequest.from_json_string(json)
assert copy == scaling_request
def receive(self):
try:
received_scaling_request_string = self._process_queue.get(block=False)
scaling_request = DynamiteScalingRequest.from_json_string(
received_scaling_request_string,
message_processed_callback=lambda: None
)
self._logger.debug("Received scaling request:{:s}".format(received_scaling_request_string))
return scaling_request
except Empty:
self._logger.debug("No request received.")
return None
def receive(self):
try:
received_scaling_request_string = self._process_queue.get(
block=False)
scaling_request = DynamiteScalingRequest.from_json_string(
received_scaling_request_string,
message_processed_callback=lambda: None)
self._logger.debug("Received scaling request:{:s}".format(
received_scaling_request_string))
return scaling_request
except Empty:
self._logger.debug("No request received.")
return None
def test_init_from_json_string(self):
json_string = """
{
"service_instance_name": "apache_service_instance",
"service_name": "apache_service",
"command": "scale_up",
"failure_counter": 8
}
"""
request = DynamiteScalingRequest.from_json_string(json_string)
assert request.command == DynamiteScalingCommand.SCALE_UP
assert request.service_name == "apache_service"
assert request.service_instance_name == "apache_service_instance"
assert request.failure_counter == 8
def test_init_from_json_string(self):
json_string = """
{
"service_instance_name": "apache_service_instance",
"service_name": "apache_service",
"command": "scale_up",
"failure_counter": 8
}
"""
request = DynamiteScalingRequest.from_json_string(json_string)
assert request.command == DynamiteScalingCommand.SCALE_UP
assert request.service_name == "apache_service"
assert request.service_instance_name == "apache_service_instance"
assert request.failure_counter == 8
def receive(self):
if self._queue_channel is None:
raise ValueError("You need to connect before you can receive any message!")
method_frame, header_frame, message_body = self._queue_channel.basic_get(queue=self._queue_name, no_ack=False)
if self._no_message_delivered(method_frame, header_frame):
self._logger.debug("Received no scaling request")
return None
received_scaling_request_string = message_body.decode("utf-8")
message_processed_callback = lambda: self._on_message_processed(method_frame.delivery_tag)
scaling_request = DynamiteScalingRequest.from_json_string(
received_scaling_request_string, message_processed_callback=message_processed_callback
)
self._logger.debug("Received scaling request:{:s}".format(received_scaling_request_string))
return scaling_request
def check_if_content_in_queue(self, content):
for content_message in content:
method_frame, header_frame, message_body = self._channel.basic_get(queue=self.RABBITMQ_SCALING_REQUEST_QUEUE_NAME, no_ack=False)
request = DynamiteScalingRequest.from_json_string(message_body.decode("utf-8"))
success_or_error = "[SUCCESS]" if request == content_message else "[ERROR]"
print("{} Received message {}".format(success_or_error, message_body))
