public void Update(IContainSagaData saga, string versionFieldName, int version)
{
var collection = GetCollection(saga.GetType());
var fbuilder = Builders <BsonDocument> .Filter;
var filter = fbuilder.Eq("_id", saga.Id) & fbuilder.Eq(versionFieldName, version);
var bsonDoc = saga.ToBsonDocument();
var ubuilder = Builders <BsonDocument> .Update;
var update = ubuilder.Inc(versionFieldName, 1);
foreach (var field in bsonDoc.Where(field => field.Name != versionFieldName && field.Name != "_id"))
{
update = update.Set(field.Name, field.Value);
}
var modifyResult = collection.FindOneAndUpdate(
filter,
update,
new FindOneAndUpdateOptions <BsonDocument> {
IsUpsert = false, ReturnDocument = ReturnDocument.After
});
if (modifyResult == null)
{
throw new SagaMongoDbConcurrentUpdateException(version);
}
}
public async Task Save(
IContainSagaData sagaData,
SagaCorrelationProperty correlationProperty,
SynchronizedStorageSession session,
ContextBag context)
{
var sagaTypeName = sagaData.GetType().Name;
var sagaDataWithVersion = sagaData as IHaveDocumentVersion;
if (sagaDataWithVersion == null)
{
throw new InvalidOperationException(
string.Format("Saga type {0} does not implement IHaveDocumentVersion", sagaTypeName));
}
sagaDataWithVersion.DocumentVersion = 0;
sagaDataWithVersion.ETag = sagaData.ComputeETag();
if (correlationProperty != null)
{
await this.EnsureUniqueIndex(sagaData, correlationProperty).ConfigureAwait(false);
}
var collection = this.mongoDatabase.GetCollection <BsonDocument>(sagaTypeName);
await collection.InsertOneAsync(sagaData.ToBsonDocument()).ConfigureAwait(false);
}
public async Task Save(IContainSagaData sagaData, SagaCorrelationProperty correlationProperty, ISynchronizedStorageSession session, ContextBag context, CancellationToken cancellationToken = default)
{
var storageSession = (StorageSession)session;
var sagaDataType = sagaData.GetType();
var document = sagaData.ToBsonDocument();
document.Add(versionElementName, 0);
await storageSession.InsertOneAsync(sagaDataType, document, cancellationToken).ConfigureAwait(false);
}
public async Task Update(IContainSagaData sagaData, ISynchronizedStorageSession session, ContextBag context, CancellationToken cancellationToken = default)
{
var storageSession = (StorageSession)session;
var sagaDataType = sagaData.GetType();
var version = storageSession.RetrieveVersion(sagaDataType);
var document = sagaData.ToBsonDocument().SetElement(new BsonElement(versionElementName, version + 1));
var result = await storageSession.ReplaceOneAsync(sagaDataType, filterBuilder.Eq(idElementName, sagaData.Id)& filterBuilder.Eq(versionElementName, version), document, cancellationToken).ConfigureAwait(false);
if (result.ModifiedCount != 1)
{
throw new Exception($"The '{sagaDataType.Name}' saga with id '{sagaData.Id}' was updated by another process or no longer exists.");
}
}
public void Update(IContainSagaData saga, string versionFieldName, int version)
{
var collection = _db.GetCollection(GetCollectionName(saga.GetType()));
var query = Query.And(Query.EQ("_id", saga.Id), Query.EQ(versionFieldName, version));
var bsonDoc = saga.ToBsonDocument();
var update = new UpdateBuilder().Inc(versionFieldName, 1);
foreach (var field in bsonDoc.Where(field => field.Name != versionFieldName && field.Name != "_id"))
{
update.Set(field.Name, field.Value);
}
var modifyResult = collection.FindAndModify(query, SortBy.Null, update, true, false);
if (modifyResult.ModifiedDocument == null)
{
throw new SagaMongoDbConcurrentUpdateException(version);
}
}
