protected void PropageteRequestToWorkers(RestRequest request, Topic topic, Worker worker, Worker coworker)
{
var requestForMaster = request.AddParameter("Cooperator", coworker.Address);
IRestResponse response;
if (WorkerQueries.IsWorkerAlive(DBConnection, worker.Id))
{
response = PropagateRequest(requestForMaster, worker);
if (response.ResponseStatus == ResponseStatus.TimedOut ||
response.ResponseStatus == ResponseStatus.Error)
{
response = PropagateRequest(request, coworker);
TopicsQueries.swapWorkers(DBConnection, topic);
}
}
else
{
response = PropagateRequest(request, coworker);
TopicsQueries.swapWorkers(DBConnection, topic);
}
if (response.StatusCode != HttpStatusCode.OK)
{
throw new BadRequestException();
}
}
public QueuesAndTopics Get(QueuesAndTopicsRequest request)
{
if (Encrypt.EncryptToken(request.Time, request.WorkerId, request.Address, request.Token))
{
var queues = QueuesQueries.GetWorkerQueues(DBConnection, request.WorkerId);
var topics = TopicsQueries.GetWorkerTopics(DBConnection, request.WorkerId);
return(new QueuesAndTopics
{
Queues = queues,
Topics = topics
});
}
throw new BadRequestException();
}
protected void processRequest(string topicName, RestRequest request)
{
if (!TopicsQueries.TopicExists(DBConnection, topicName))
{
throw new TopicNotExistsException();
}
else
{
var topic = TopicsQueries.getTopicByName(DBConnection, topicName);
var worker = WorkerQueries.GetWorkerById(DBConnection, topic.Worker);
var coworker = WorkerQueries.GetWorkerById(DBConnection, topic.Cooperator);
PropageteRequestToWorkers(request, topic, worker, coworker);
}
}
public void Delete(DeleteTopic request)
{
var requestToSend = new RestRequest($"/topics/{request.TopicName}", Method.DELETE);
if (!TopicsQueries.TopicExists(DBConnection, request.TopicName))
{
throw new TopicNotExistsException();
}
else
{
var topic = TopicsQueries.getTopicByName(DBConnection, request.TopicName);
var worker = WorkerQueries.GetWorkerById(DBConnection, topic.Worker);
var coworker = WorkerQueries.GetWorkerById(DBConnection, topic.Cooperator);
TopicsQueries.DeleteTopic(DBConnection, request.TopicName);
PropageteRequestToWorkers(requestToSend, topic, worker, coworker);
}
}
public Announcement Get(GetAnnouncement request, int subscriberId)
{
var requestToSend = new RestRequest($"/topics/{request.TopicName}/announcements", Method.GET);
requestToSend.AddParameter("SubscriberId", subscriberId);
if (!TopicsQueries.TopicExists(DBConnection, request.TopicName))
{
throw new TopicNotExistsException();
}
else
{
var topic = TopicsQueries.getTopicByName(DBConnection, request.TopicName);
var worker = WorkerQueries.GetWorkerById(DBConnection, topic.Worker);
var coworker = WorkerQueries.GetWorkerById(DBConnection, topic.Cooperator);
return(PropageteRequestToWorkers <Announcement>(requestToSend, topic, worker, coworker));
}
}
public void Create(CreateTopic request)
{
var requestToSend = new RestRequest("topics", Method.POST);
requestToSend.AddParameter("Name", request.Name);
if (TopicsQueries.TopicExists(DBConnection, request.Name))
{
throw new TopicAlreadyExistsException();
}
else
{
Worker worker, coworker;
CalculateTopicWorkers(request.Name, out worker, out coworker);
var topic = TopicsQueries.CreateTopic(DBConnection, request.Name, worker.Id, coworker.Id);
PropageteRequestToWorkers(requestToSend, topic, worker, coworker);
}
}
protected override void swapWorkers(ICollection collection)
{
TopicsQueries.swapWorkers(DBConnection, (Topic)collection);
}
public IList <String> Get()
{
return(TopicsQueries.getTopicsNames(DBConnection));
}