/// <summary>
/// Deletes the snapshot identified by <paramref name="metadata" />.
/// This call is protected with a circuit-breaker
/// </summary>
/// <param name="metadata">TBD</param>
/// <returns>
/// TBD
/// </returns>
protected override async Task DeleteAsync(SnapshotMetadata metadata)
{
IQueryable <SnapshotEntry> query = documentClient.Value.CreateDocumentQuery <SnapshotEntry>
(snapShotCollection.Value.SelfLink);
query = query.Where(a => a.PersistenceId == metadata.PersistenceId);
if (metadata.SequenceNr > 0 && metadata.SequenceNr < long.MaxValue)
{
query = query.Where(a => a.SequenceNr == metadata.SequenceNr);
}
if (metadata.Timestamp != DateTime.MinValue && metadata.Timestamp != DateTime.MaxValue)
{
var dateTimeAsJson = new DateTimeJsonObject(metadata.Timestamp);
query = query.Where(a => a.Timestamp.Date == dateTimeAsJson.Date && a.Timestamp.Ticks == dateTimeAsJson.Ticks);
}
var document = query.ToList().FirstOrDefault();
if (document != null)
{
await documentClient.Value.DeleteDocumentAsync(
UriFactory.CreateDocumentUri(documentDbDatabase.Value.Id, snapShotCollection.Value.Id, document.Id));
}
}
public SnapshotEntry(SnapshotMetadata metadata, object snapshot, Akka.Serialization.Serialization serialization)
{
Snapshot = snapshot;
Id = $"{DocumentType}-{metadata.PersistenceId}-{metadata.SequenceNr}";
SequenceNr = metadata.SequenceNr;
Timestamp = new DateTimeJsonObject(metadata.Timestamp);
PersistenceId = metadata.PersistenceId;
Manifest = snapshot.GetType().AssemblyQualifiedName;
Serializer serializer = serialization.FindSerializerFor(snapshot);
if (serializer != null)
{
SerializerId = serializer.Identifier;
if (serializer is SerializerWithStringManifest)
{
Manifest = ((SerializerWithStringManifest)serializer).Manifest(snapshot);
}
if (SerializerId.HasValue && SerializerId.Value == 1)
{
Snapshot = snapshot;
}
else
{
Snapshot = Convert.ToBase64String(serializer.ToBinary(snapshot));
}
}
}
public SnapshotEntry(SnapshotMetadata metadata, object snapshot)
{
Snapshot = snapshot;
Id = $"{metadata.PersistenceId}_{metadata.SequenceNr}";
SequenceNr = metadata.SequenceNr;
Timestamp = new DateTimeJsonObject(metadata.Timestamp);
PersistenceId = metadata.PersistenceId;
}
private IQueryable <SnapshotEntry> GetSnapshotQuery(string persistenceId, SnapshotSelectionCriteria criteria)
{
IQueryable <SnapshotEntry> query = documentClient.Value.CreateDocumentQuery <SnapshotEntry>(snapShotCollection.Value.SelfLink);
query = query.Where(a => a.PersistenceId == persistenceId);
if (criteria.MaxSequenceNr > 0 && criteria.MaxSequenceNr < long.MaxValue)
{
query = query.Where(a => a.SequenceNr <= criteria.MaxSequenceNr);
}
if (criteria.MaxTimeStamp != DateTime.MinValue && criteria.MaxTimeStamp != DateTime.MaxValue)
{
var dateTimeAsJson = new DateTimeJsonObject(criteria.MaxTimeStamp);
query = query.Where(a => a.Timestamp.Date < dateTimeAsJson.Date ||
a.Timestamp.Ticks <= dateTimeAsJson.Ticks);
}
return(query);
}
