public static T ConvertFromBase <T>(SagaData baseObj)
where T : SagaData, new()
{
var result = new T();
result.CorrelationId = baseObj.CorrelationId;
result.BlobData = baseObj.BlobData;
return(result);
}
/// <summary>
/// Persists the instance of saga into the database storage.
///
/// Actually stores SagaData and Headers. All other variables in saga are not persisted
/// </summary>
/// <typeparam name="TSaga">Type of saga</typeparam>
/// <param name="saga">Saga instance</param>
public void Save <TSaga>(TSaga saga) where TSaga : class, IAccessibleSaga
{
Guard.ArgumentIsNotNull(saga, nameof(saga));
var sagaData = NSagaReflection.Get(saga, "SagaData");
var sagaHeaders = (Dictionary <String, String>)NSagaReflection.Get(saga, "Headers");
var correlationId = (Guid)NSagaReflection.Get(saga, "CorrelationId");
var serialisedData = messageSerialiser.Serialise(sagaData);
var dataModel = new SagaData()
{
CorrelationId = correlationId,
BlobData = serialisedData,
};
using (var connection = connectionFactory.CreateOpenConnection())
using (var database = new Database(connection))
using (var transaction = database.GetTransaction())
{
try
{
int updatedRaws = database.Update(dataModel);
if (updatedRaws == 0)
{
// no records were updated - this means no records already exist - need to insert new record
database.Insert(dataModel);
}
// delete all existing headers
database.Delete <SagaHeaders>("WHERE CorrelationId=@0", correlationId);
// and insert updated ones
foreach (var header in sagaHeaders)
{
var storedHeader = new SagaHeaders()
{
CorrelationId = correlationId,
Key = header.Key,
Value = header.Value,
};
database.Insert(storedHeader);
}
transaction.Complete();
}
catch (Exception)
{
transaction.Dispose();
throw;
}
}
}
/// <summary>
/// Persists the instance of saga into the database storage.
///
/// Actually stores SagaData and Headers. All other variables in saga are not persisted
/// </summary>
/// <typeparam name="TSaga">Type of saga</typeparam>
/// <param name="saga">Saga instance</param>
public void Save <TSaga>(TSaga saga) where TSaga : class, IAccessibleSaga
{
Guard.ArgumentIsNotNull(saga, nameof(saga));
var sagaData = NSagaReflection.Get(saga, "SagaData");
var sagaHeaders = saga.Headers;
var correlationId = saga.CorrelationId;
var serialisedData = messageSerialiser.Serialise(sagaData);
var dataModel = new SagaData()
{
CorrelationId = correlationId,
BlobData = serialisedData,
};
using (var transaction = database.BeginTransaction())
{
try
{
int updatedRaws = database.Update(dataModel);
if (updatedRaws == 0)
{
// no records were updated - this means no records already exist - need to insert new record
database.Insert(dataModel);
}
// delete all existing headers
database.DeleteById <SagaHeaders>(correlationId);
// and insert updated ones
foreach (var header in sagaHeaders)
{
var storedHeader = new SagaHeaders()
{
CorrelationId = correlationId,
Key = header.Key,
Value = header.Value,
};
database.Insert(storedHeader);
}
transaction.CommitTransaction();
}
catch (Exception ex)
{
transaction.RollbackTransaction();
throw;
}
}
}
public object Insert(Database database, SagaData poco)
{
var entity = SagaData.ConvertFromBase <TSagaData>(poco);
return(database.Insert(entity));
}
public int Update(Database database, SagaData poco)
{
var entity = SagaData.ConvertFromBase <TSagaData>(poco);
return(database.Update(entity));
}
