public static IEnumerable<EventHandlerProgress> Calculate(
Func<DbContext> createDbContext,
Func<EventStoreDbContext> createEventStoreDbContext = null)
{
if (createDbContext == null)
{
throw new ArgumentNullException("createDbContext");
}
int count;
using (new TransactionScope(TransactionScopeOption.Suppress, TransactionScopeAsyncFlowOption.Enabled))
using (var db = createEventStoreDbContext.IfNotNull()
.Then(create => create())
.Else(() => new EventStoreDbContext()))
{
count = db.Events.Count();
}
if (count == 0)
{
return Enumerable.Empty<EventHandlerProgress>();
}
var now = Clock.Now();
var progress = new List<EventHandlerProgress>();
using (new TransactionScope(TransactionScopeOption.Suppress, TransactionScopeAsyncFlowOption.Enabled))
using (var db = createDbContext())
{
var readModelInfos = db.Set<ReadModelInfo>().ToArray();
readModelInfos
.ForEach(i =>
{
var eventsProcessed = i.InitialCatchupEndTime.HasValue
? i.BatchTotalEvents - i.BatchRemainingEvents
: i.InitialCatchupEvents - i.BatchRemainingEvents;
long? timeTakenForProcessedEvents = null;
if (i.BatchStartTime.HasValue && i.InitialCatchupStartTime.HasValue)
{
timeTakenForProcessedEvents = i.InitialCatchupEndTime.HasValue
? (now - i.BatchStartTime).Value.Ticks
: (now - i.InitialCatchupStartTime).Value.Ticks;
}
if (eventsProcessed == 0)
{
return;
}
var eventHandlerProgress = new EventHandlerProgress
{
Name = i.Name,
InitialCatchupEvents = i.InitialCatchupEvents,
TimeTakenForInitialCatchup = i.InitialCatchupStartTime.HasValue
? (i.InitialCatchupEndTime.HasValue ? i.InitialCatchupEndTime : now) - i.InitialCatchupStartTime
: null,
TimeRemainingForCatchup = eventsProcessed != 0 && timeTakenForProcessedEvents.HasValue
? (TimeSpan?) TimeSpan.FromTicks((long) (timeTakenForProcessedEvents*(i.BatchRemainingEvents/(decimal) eventsProcessed)))
: null,
EventsRemaining = i.BatchRemainingEvents,
PercentageCompleted = (1 - ((decimal) i.BatchRemainingEvents/count))*100,
LatencyInMilliseconds = i.LatencyInMilliseconds,
LastUpdated = i.LastUpdated,
CurrentAsOfEventId = i.CurrentAsOfEventId,
FailedOnEventId = i.FailedOnEventId,
Error = i.Error
};
progress.Add(eventHandlerProgress);
});
}
return progress;
}
public static IEnumerable <EventHandlerProgress> CalculateProgress(
Func <DbContext> createReadModelDbContext,
Func <EventStoreDbContext> createEventStoreDbContext = null)
{
if (createReadModelDbContext == null)
{
throw new ArgumentNullException(nameof(createReadModelDbContext));
}
createEventStoreDbContext = createEventStoreDbContext ??
(() => Configuration.Current.EventStoreDbContext());
int eventStoreCount;
using (var db = createEventStoreDbContext())
{
eventStoreCount = db.Events.Count();
}
if (eventStoreCount == 0)
{
return(Enumerable.Empty <EventHandlerProgress>());
}
var now = Clock.Now();
var progress = new List <EventHandlerProgress>();
ReadModelInfo[] readModelInfos;
using (var db = createReadModelDbContext())
{
readModelInfos = db.Set <ReadModelInfo>().ToArray();
}
readModelInfos
.ForEach(i =>
{
var eventsProcessed = i.InitialCatchupEndTime.HasValue
? EventsProcessedOutOfBatch(i)
: EventsProcessedOutOfAllEvents(i);
if (eventsProcessed == 0)
{
return;
}
if (!i.BatchStartTime.HasValue)
{
return;
}
if (!i.InitialCatchupStartTime.HasValue)
{
return;
}
var timeTakenForProcessedEvents = i.InitialCatchupEndTime.HasValue
? (now - i.BatchStartTime).Value
: (now - i.InitialCatchupStartTime).Value;
var eventHandlerProgress = new EventHandlerProgress
{
Name = i.Name,
InitialCatchupEvents = i.InitialCatchupEvents,
TimeTakenForInitialCatchup = TimeTakenForInitialCatchup(i, now),
TimeRemainingForCatchup = TimeRemaining(timeTakenForProcessedEvents, eventsProcessed, i.BatchRemainingEvents),
EventsRemaining = i.BatchRemainingEvents,
PercentageCompleted = Percent(
eventStoreCount - i.BatchRemainingEvents,
eventStoreCount),
LatencyInMilliseconds = i.LatencyInMilliseconds,
LastUpdated = i.LastUpdated,
CurrentAsOfEventId = i.CurrentAsOfEventId,
FailedOnEventId = i.FailedOnEventId,
Error = i.Error
};
progress.Add(eventHandlerProgress);
});
return(progress);
}
public static IEnumerable <EventHandlerProgress> Calculate(
Func <DbContext> createDbContext,
Func <EventStoreDbContext> createEventStoreDbContext = null)
{
if (createDbContext == null)
{
throw new ArgumentNullException(nameof(createDbContext));
}
int count;
using (var db = createEventStoreDbContext.IfNotNull()
.Then(create => create())
.Else(() => new EventStoreDbContext()))
{
count = db.Events.Count();
}
if (count == 0)
{
return(Enumerable.Empty <EventHandlerProgress>());
}
var now = Clock.Now();
var progress = new List <EventHandlerProgress>();
ReadModelInfo[] readModelInfos;
using (var db = createDbContext())
{
readModelInfos = db.Set <ReadModelInfo>().ToArray();
}
readModelInfos
.ForEach(i =>
{
var eventsProcessed = i.InitialCatchupEndTime.HasValue
? i.BatchTotalEvents - i.BatchRemainingEvents
: i.InitialCatchupEvents - i.BatchRemainingEvents;
long?timeTakenForProcessedEvents = null;
if (i.BatchStartTime.HasValue && i.InitialCatchupStartTime.HasValue)
{
timeTakenForProcessedEvents = i.InitialCatchupEndTime.HasValue
? (now - i.BatchStartTime).Value.Ticks
: (now - i.InitialCatchupStartTime).Value.Ticks;
}
if (eventsProcessed == 0)
{
return;
}
var eventHandlerProgress = new EventHandlerProgress
{
Name = i.Name,
InitialCatchupEvents = i.InitialCatchupEvents,
TimeTakenForInitialCatchup = i.InitialCatchupStartTime.HasValue
? (i.InitialCatchupEndTime.HasValue ? i.InitialCatchupEndTime : now) - i.InitialCatchupStartTime
: null,
TimeRemainingForCatchup = eventsProcessed != 0 && timeTakenForProcessedEvents.HasValue
? (TimeSpan?)TimeSpan.FromTicks((long)(timeTakenForProcessedEvents * (i.BatchRemainingEvents / (decimal)eventsProcessed)))
: null,
EventsRemaining = i.BatchRemainingEvents,
PercentageCompleted = (1 - ((decimal)i.BatchRemainingEvents / count)) * 100,
LatencyInMilliseconds = i.LatencyInMilliseconds,
LastUpdated = i.LastUpdated,
CurrentAsOfEventId = i.CurrentAsOfEventId,
FailedOnEventId = i.FailedOnEventId,
Error = i.Error
};
progress.Add(eventHandlerProgress);
});
return(progress);
}
public static IEnumerable <EventHandlerProgress> CalculateProgress(
Func <DbContext> createReadModelDbContext,
Func <EventStoreDbContext> createEventStoreDbContext = null,
Expression <Func <ReadModelInfo, bool> > filter = null)
{
if (createReadModelDbContext == null)
{
throw new ArgumentNullException(nameof(createReadModelDbContext));
}
createEventStoreDbContext = createEventStoreDbContext ??
(() => Configuration.Current.EventStoreDbContext());
int eventStoreCount;
using (var db = createEventStoreDbContext())
{
eventStoreCount = db.Events.Count();
}
if (eventStoreCount == 0)
{
return(Enumerable.Empty <EventHandlerProgress>());
}
var progress = new List <EventHandlerProgress>();
ReadModelInfo[] readModelInfos;
using (var db = createReadModelDbContext())
{
IQueryable <ReadModelInfo> query = db.Set <ReadModelInfo>();
if (filter != null)
{
query = query.Where(filter);
}
readModelInfos = query.ToArray();
}
readModelInfos
.ForEach(i =>
{
var eventsProcessedOutOfBatch = EventsProcessedOutOfBatch(i);
if (eventsProcessedOutOfBatch == 0)
{
return;
}
if (!i.BatchStartTime.HasValue)
{
return;
}
if (!i.InitialCatchupStartTime.HasValue)
{
return;
}
var eventHandlerProgress = new EventHandlerProgress(i);
progress.Add(eventHandlerProgress);
});
return(progress);
}