public OptimisticEventStream(Snapshot snapshot, ICommitEvents persistence, int maxRevision)
: this(snapshot.StreamId, persistence)
{
IEnumerable<Commit> commits = persistence.GetFrom(snapshot.StreamId, snapshot.StreamRevision, maxRevision);
PopulateStream(snapshot.StreamRevision + 1, maxRevision, commits);
StreamRevision = snapshot.StreamRevision + _committed.Count;
}
public bool Save(string streamId, int streamVersion)
{
try
{
var innerPayload = snapshotContentDictionary
.Values
.Select(p => new TrackedTag(p.Id, p.Version))
.ToList <object>();
var snap = new NEventStoreSnapshot(
streamId,
streamVersion,
innerPayload);
var result = EventStore.Advanced.AddSnapshot(snap);
return(result);
}
catch (Exception e)
{
throw e;
}
}
public virtual IEventStream OpenStream(Snapshot snapshot, int maxRevision)
{
if (snapshot == null)
{
throw new ArgumentNullException("snapshot");
}
Logger.Debug(Resources.OpeningStreamWithSnapshot, snapshot.StreamId, snapshot.StreamRevision, maxRevision);
maxRevision = maxRevision <= 0 ? int.MaxValue : maxRevision;
return new OptimisticEventStream(snapshot, this, maxRevision);
}
protected override void Context()
{
snapshot = new Snapshot(streamId, 1, "snapshot");
_committed = BuildCommitStub(1, 1);
A.CallTo(() => Persistence.GetFrom(Bucket.Default, streamId, snapshot.StreamRevision, int.MaxValue))
.Returns(new[] { _committed });
}
protected override void Context()
{
_snapshot = new Snapshot(streamId, HeadStreamRevision, "snapshot");
_committed = new EnumerableCounter<ICommit>(
new[] { BuildCommitStub(HeadStreamRevision, HeadCommitSequence)});
A.CallTo(() => Persistence.GetFrom(Bucket.Default, streamId, HeadStreamRevision, int.MaxValue))
.Returns(_committed);
}
protected override void Context()
{
_snapshot = new Snapshot(streamId, 42, "snapshot");
_committed = new[] { BuildCommitStub(42, 0)};
A.CallTo(() => Persistence.GetFrom(Bucket.Default, streamId, 42, MaxRevision)).Returns(_committed);
}
protected override void Context()
{
snapshot = new Snapshot(streamId, HeadStreamRevision, "snapshot");
Committed = new EnumerableCounter(
new[] {BuildCommitStub(HeadStreamRevision, HeadCommitSequence)});
Persistence.Setup(x => x.GetFrom(streamId, HeadStreamRevision, int.MaxValue)).Returns(Committed);
}
protected override void Context()
{
snapshot = new Snapshot(streamId, 1, "snapshot");
Committed = BuildCommitStub(1, 1);
Persistence
.Setup(x => x.GetFrom(streamId, snapshot.StreamRevision, int.MaxValue))
.Returns(new[] {Committed});
}
protected override void Context()
{
snapshot = new Snapshot(streamId, 42, "snapshot");
Committed = new[] {BuildCommitStub(42, 0)};
Persistence.Setup(x => x.GetFrom(streamId, 42, MaxRevision)).Returns(Committed);
}
protected override Task Context()
{
snapshot = new Snapshot(streamId, 1, "snapshot");
_committed = BuildCommitStub(1, 1);
//A.CallTo(() => Persistence.GetFrom(Bucket.Default, streamId, snapshot.StreamRevision, int.MaxValue))
// .Returns(new[] { _committed }.ToAsync());
Persistence.GetFrom(Bucket.Default, streamId, snapshot.StreamRevision, int.MaxValue)
.Returns(new[] { _committed }.ToAsync());
return Task.FromResult(true);
}
protected override Task Context()
{
_snapshot = new Snapshot(streamId, HeadStreamRevision, "snapshot");
_committed = new EnumerableCounter<ICommit>(
new[] { BuildCommitStub(HeadStreamRevision, HeadCommitSequence)});
Persistence
.GetFrom(Bucket.Default, streamId, HeadStreamRevision, int.MaxValue)
.Returns(_committed.ToAsync());
//A.CallTo(() => Persistence.GetFrom(Bucket.Default, streamId, HeadStreamRevision, int.MaxValue))
// .Returns(_committed.ToAsync());
return Task.FromResult(true);
}
protected override Task Context()
{
_snapshot = new Snapshot(streamId, 42, "snapshot");
_committed = new[] { BuildCommitStub(42, 0)};
Persistence.GetFrom(Bucket.Default, streamId, 42, MaxRevision).Returns(_committed.ToAsync());
//A.CallTo(() => Persistence.GetFrom(Bucket.Default, streamId, 42, MaxRevision)).Returns(_committed.ToAsync());
return Task.FromResult(true);
}
public void When_using_snapshots_only_following_events_should_be_retrieved_when_reopening_the_stream()
{
var streamId = Guid.NewGuid();
var event1 = Event.Create(streamId, new SomethingHappened("data1"));
var event2 = Event.Create(streamId, new SomethingHappened("data2"));
var event3 = Event.Create(streamId, new SomethingHappened("data3"));
using (var connection1 = CreateSqlConnection())
{
using (var stream = connection1.OpenStream(streamId, 0))
{
stream.Add(new EventMessage { Body = event1.Data });
stream.Add(new EventMessage { Body = event2.Data });
stream.Add(new EventMessage { Body = event3.Data });
stream.CommitChanges(event1.EventId);
var snapshotData = new SomeSnapshot(new[] { event1.Data, event2.Data, event3.Data });
var snapshot = new Snapshot(stream.StreamId, stream.StreamRevision, snapshotData);
connection1.Advanced.AddSnapshot(snapshot);
stream.CommitChanges(Guid.NewGuid());
stream.CommittedEvents.Count.ShouldBe(3);
}
var snapshot2 = connection1.Advanced.GetSnapshot(streamId, int.MaxValue);
((SomeSnapshot)snapshot2.Payload).State.ShouldBe(new[] { "data1", "data2", "data3", });
using (var stream = connection1.OpenStream(snapshot2, int.MaxValue))
{
stream.CommittedEvents.Count.ShouldBe(0);
var event4 = Event.Create(streamId, new SomethingHappened("data4"));
var event5 = Event.Create(streamId, new SomethingHappened("data5"));
stream.Add(new EventMessage { Body = event4.Data });
stream.Add(new EventMessage { Body = event5.Data });
stream.CommitChanges(event4.EventId);
}
var snapshot3 = connection1.Advanced.GetSnapshot(streamId, int.MaxValue);
((SomeSnapshot)snapshot3.Payload).State.ShouldBe(new[] { "data1", "data2", "data3", });
using (var stream = connection1.OpenStream(snapshot3, int.MaxValue))
{
stream.CommittedEvents.Count.ShouldBe(2);
stream.CommittedEvents.Select(x => x.Body).OfType<SomethingHappened>().Select(x => x.Something)
.ShouldBe(new[] { "data4", "data5" });
}
}
}
