public void Persistence_of_simple_put_transaction_with_one_object()
{
var transaction1 = MakeTransaction(new Trade(1, 5465, "TATA", DateTime.Now.Date, 150));
var engine = new PersistenceEngine();
engine.Start();
engine.NewTransaction(transaction1);
// wait for the transaction log to be processed
engine.WaitForPendingTransactions();
engine.Stop();
var processor = new TestProcessor();
//reload data from persistent storage
var unused = new ReliableStorage(processor);
unused.LoadPersistentData();
unused.Dispose();
Assert.AreEqual(1, processor.LoadedObjects.Count);
var reloaded = CachedObject.Unpack <Trade>(processor.LoadedObjects[0]);
Assert.AreEqual("TATA", reloaded.Folder);
}
Add_two_objects_then_update_one_of_them_then_check_the_persistent_storage_contains_the_updated_value()
{
var transaction1 = MakeTransaction(
new Trade(1, 5465, "TATA", DateTime.Now.Date, 150),
new Trade(2, 5467, "TATA", DateTime.Now.Date, 180)
);
var transaction2 = MakeTransaction(
new Trade(2, 5467, "TOTO", DateTime.Now.Date, 190)
);
var deleteTransaction = MakeDeleteTransaction(
new Trade(1, 5465, "TATA", DateTime.Now.Date, 150)
);
var engine = new PersistenceEngine();
engine.Start();
engine.NewTransaction(transaction1);
engine.NewTransaction(transaction2);
engine.NewTransaction(deleteTransaction);
// wait for the transaction log to be processed
engine.WaitForPendingTransactions();
engine.Stop();
var processor = new TestProcessor();
//reload data from persistent storage
var unused = new ReliableStorage(processor);
unused.LoadPersistentData();
unused.Dispose();
Assert.AreEqual(1, processor.LoadedObjects.Count);
var reloaded = processor.LoadedObjects.Select(CachedObject.Unpack <Trade>).First(t => t.Id == 2);
Assert.AreEqual("TOTO", reloaded.Folder);
//reload data from transaction log. Check no more pending transactions
var log = new TransactionLog();
Assert.AreEqual(0, log.PendingTransactionsCount);
log.Dispose();
}
public void Simulate_failure_during_transaction_processing()
{
var transaction1 = MakeTransaction(
new Trade(1, 5465, "TATA", DateTime.Now.Date, 150),
new Trade(2, 5467, "TATA", DateTime.Now.Date, 180)
);
var transaction2 = MakeTransaction(
new Trade(2, 5467, "TOTO", DateTime.Now.Date, 190)
);
var log = new TransactionLog();
log.NewTransaction(
SerializationHelper.ObjectToBytes(transaction1, SerializationMode.ProtocolBuffers, null));
log.NewTransaction(
SerializationHelper.ObjectToBytes(transaction2, SerializationMode.ProtocolBuffers, null));
var dummy = log.StartProcessing(); // call StartProcessing and close before EndProcessing
log.Dispose();
var engine = new PersistenceEngine();
engine.Start();
engine.WaitForPendingTransactions();
engine.Stop();
var processor = new TestProcessor();
//reload data from persistent storage
var unused = new ReliableStorage(processor);
unused.LoadPersistentData();
unused.Dispose();
Assert.AreEqual(2, processor.LoadedObjects.Count);
var reloaded = processor.LoadedObjects.Select(CachedObject.Unpack <Trade>).First(t => t.Id == 2);
Assert.AreEqual("TOTO", reloaded.Folder);
//reload data from transaction log. Check no more pending transactions
log = new TransactionLog();
Assert.AreEqual(0, log.PendingTransactionsCount);
log.Dispose();
}
public void Start_the_persistence_engine_with_a_non_empty_transaction_log()
{
var transaction1 = MakeTransaction(
new Trade(1, 5465, "TATA", DateTime.Now.Date, 150),
new Trade(2, 5467, "TATA", DateTime.Now.Date, 180)
);
var transaction2 = MakeTransaction(
new Trade(2, 5467, "TOTO", DateTime.Now.Date, 190)
);
var log = new TransactionLog();
log.NewTransaction(
SerializationHelper.ObjectToBytes(transaction1, SerializationMode.ProtocolBuffers, false));
log.NewTransaction(
SerializationHelper.ObjectToBytes(transaction2, SerializationMode.ProtocolBuffers, false));
log.Dispose();
var engine = new PersistenceEngine();
engine.Start();
engine.WaitForPendingTransactions();
engine.Stop();
var processor = new TestProcessor();
//reload data from persistent storage
var unused = new ReliableStorage(processor);
unused.LoadPersistentData();
unused.Dispose();
Assert.AreEqual(2, processor.LoadedObjects.Count);
var reloaded = processor.LoadedObjects.Select(PackedObject.Unpack <Trade>).First(t => t.Id == 2);
Assert.AreEqual("TOTO", reloaded.Folder);
//reload data from transaction log. Check no more pending transactions
log = new TransactionLog();
Assert.AreEqual(0, log.PendingTransactionsCount);
log.Dispose();
}
