public void Add(TimeoutData timeout)
{
Logger.Debug("Adding timeout");
if (timeout == null)
{
Logger.Debug("Timeout is null! Throwing");
throw new ArgumentNullException("timeout");
}
Guid timeoutId = CombGuid.NewGuid();
Logger.DebugFormat("Created new comb guid for timeout ID {0}", timeoutId);
TimeoutDataEntity timeoutEntity = new TimeoutDataEntity
{
Destination = timeout.Destination.ToString(),
Endpoint = timeout.OwningTimeoutManager,
Headers = timeout.Headers.ToDictionaryString(),
Id = timeoutId,
SagaId = timeout.SagaId,
State = timeout.State,
Time = timeout.Time
};
using (ITimeoutDbContext dbc = _dbContextFactory.CreateTimeoutDbContext())
{
Logger.Debug("Saving timeout entity");
dbc.Timeouts.Add(timeoutEntity);
dbc.SaveChanges();
}
}
public TimeoutData Peek(string timeoutId)
{
Logger.DebugFormat("Peeking for timeout with id {0}", timeoutId);
using (ITimeoutDbContext dbc = _dbContextFactory.CreateTimeoutDbContext())
{
TimeoutDataEntity entity = dbc.Timeouts.Find(Guid.Parse(timeoutId));
Logger.DebugFormat("Timeout found? {0}", entity != null);
return MapToTimeoutData(entity);
}
}
private TimeoutData MapToTimeoutData(TimeoutDataEntity entity)
{
if (entity == null)
{
return null;
}
TimeoutData timeoutData = new TimeoutData
{
Destination = Address.Parse(entity.Destination),
Headers = entity.Headers.ToDictionary(),
Id = entity.Id.ToString(),
OwningTimeoutManager = entity.Endpoint,
SagaId = entity.SagaId,
State = entity.State,
Time = entity.Time
};
return timeoutData;
}
public bool TryRemove(string timeoutId)
{
Logger.DebugFormat("Trying to remove timeout with Id {0}.", timeoutId);
using (ITimeoutDbContext dbc = _dbContextFactory.CreateTimeoutDbContext())
{
Guid timeoutGuid = Guid.Parse(timeoutId);
TimeoutDataEntity entity = dbc.Timeouts.Find(timeoutGuid);
if (entity == null)
{
Logger.Debug("Didn't find timeout!");
return false;
}
Logger.Debug("Found timeout, removing.");
dbc.Timeouts.Remove(entity);
dbc.SaveChanges();
}
return true;
}
public IEnumerable<Tuple<string, DateTime>> GetNextChunk(DateTime startSlice, out DateTime nextTimeToRunQuery)
{
Logger.DebugFormat("Getting next chuch with start slice {0}", startSlice);
DateTime now = DateTime.UtcNow;
using (ITimeoutDbContext dbc = _dbContextFactory.CreateTimeoutDbContext())
{
Logger.Debug("Querying for matching timeouts within time slice");
List<TimeoutDataEntity> matchingTimeouts = dbc.Timeouts
.Where(
t => t.Endpoint == EndpointName
&& t.Time >= startSlice
&& t.Time <= now)
.OrderBy(t => t.Time)
.ToList();
Logger.DebugFormat("{0} timeout(s) found.", matchingTimeouts.Count);
List<Tuple<string, DateTime>> chunks = matchingTimeouts
.Select(t => new Tuple<string, DateTime>(t.Id.ToString(), t.Time))
.ToList();
TimeoutDataEntity startOfNextChunk = dbc.Timeouts
.Where(t => t.Endpoint == EndpointName && t.Time > now)
.OrderBy(t => t.Time)
.Take(1)
.SingleOrDefault();
nextTimeToRunQuery = startOfNextChunk != null
? startOfNextChunk.Time
: DateTime.UtcNow.AddMinutes(10);
Logger.DebugFormat("Next time to run query calculated to be {0}.", nextTimeToRunQuery);
return chunks;
}
}
