public void Report(TopicFailure request)
{
var recoveryAction = HandleFailure(new FailureDescriptor
{
PathToDbFile = Connections.PathToDbFile(Connections.TopicsDir, request.Name),
DbLock = Locks.TakeTopicLock(request.Name),
CooperatorAddress = request.Cooperator,
RecoveryCategory = "topics",
DbName = request.Name
});
Propagators.ScheduleTopicOperation(request.Name, recoveryAction);
}
public void Create(CreateSubscription request)
{
var topicLock = Locks.TakeTopicLock(request.TopicName);
lock (topicLock)
{
if (Locks.TopicsRecoveryLocks.ContainsKey(request.TopicName))
{
throw new Exception($"Topic {request.TopicName} is inconsistent");
}
using (var connection = Connections.ConnectToInitializedTopic(request.TopicName))
{
Create(connection, request);
}
}
}
public void Delete(DeleteTopic request)
{
var topicLock = Locks.TakeTopicLock(request.TopicName);
lock (topicLock)
{
if (Locks.TopicsRecoveryLocks.ContainsKey(request.TopicName))
{
throw new Exception($"Topic {request.TopicName} is inconsistent");
}
Connections.RemoveTopic(request.TopicName);
Monitor.PulseAll(topicLock);
Propagators.ScheduleTopicOperation(request.TopicName, () => Propagate(request));
Locks.RemoveTopicLock(request.TopicName);
}
}
Announcement ReadFromDb(IDbConnection connection, Subscriber subscriber, ReadAnnouncement request)
{
var topicLock = Locks.TakeTopicLock(request.TopicName);
lock (topicLock)
{
var query = NextAnnouncement.make(connection, subscriber);
var announcement = connection.FirstOrDefault(query);
while (announcement == null)
{
Monitor.Wait(topicLock);
announcement = connection.FirstOrDefault(query);
}
return(announcement);
}
}
public void Delete(DeleteSubscription request)
{
var topicLock = Locks.TakeTopicLock(request.TopicName);
lock (topicLock)
{
if (Locks.TopicsRecoveryLocks.ContainsKey(request.TopicName))
{
throw new Exception($"Topic {request.TopicName} is inconsistent");
}
using (var connection = Connections.ConnectToInitializedTopic(request.TopicName))
{
connection.DeleteById <Subscriber>(request.SubscriberId);
}
Propagators.ScheduleTopicOperation(request.TopicName, () => Propagate(request));
}
}
public void Create(CreateTopic request)
{
var topicLock = Locks.TakeTopicLock(request.Name);
lock (topicLock)
{
if (Locks.TopicsRecoveryLocks.ContainsKey(request.Name))
{
throw new Exception($"Topic {request.Name} is inconsistent");
}
using (var connection = Connections.ConnectToTopic(request.Name))
{
connection.CreateTableIfNotExists <Announcement>();
connection.CreateTableIfNotExists <Subscriber>();
}
if (!string.IsNullOrEmpty(request.Cooperator))
{
Propagators.ScheduleTopicOperation(request.Name, () => PropagateRequest(request));
}
}
}
