public void If_dump_import_fails_rollback_and_check_no_data_was_lost()
{
#if DEBUG
var config = new ClientConfig();
config.LoadFromFile("inprocess_persistent_config.xml");
const string dumpPath = "dump";
if (Directory.Exists(dumpPath))
{
Directory.Delete(dumpPath, true);
}
Directory.CreateDirectory(dumpPath);
using (var connector = new Connector(config))
{
var dataSource = connector.DataSource <Trade>();
for (var i = 0; i < 1010; i++)
{
if (i % 10 == 0)
{
dataSource.Put(new Trade(i, 1000 + i, "TOTO", DateTime.Now.Date, 150));
}
else
{
dataSource.Put(new Trade(i, 1000 + i, "TATA", DateTime.Now.Date, 150));
}
}
var admin = connector.AdminInterface();
admin.Dump(dumpPath);
// add some data after dump
dataSource.Put(new Trade(2000, 3000, "TITI", DateTime.Now.Date, 150));
}
// simulate exception during dump import
using (var connector = new Connector(config))
{
var admin = connector.AdminInterface();
Dbg.ActivateSimulation(100);
Assert.Throws <CacheException>(() => admin.ImportDump(dumpPath));
var dataSource = connector.DataSource <Trade>();
var folders = new[] { "TATA", "TOTO" };
var list = dataSource.Where(t => folders.Contains(t.Folder)).ToList();
Assert.AreEqual(1010, list.Count);
dataSource.DeleteMany(t => t.Folder == "TATA");
var count = dataSource.Count(t => t.Folder == "TATA");
Assert.AreEqual(0, count);
count = dataSource.Count(t => t.Folder == "TITI");
Assert.AreEqual(1, count, "this object should exist as the dump import failed");
}
#endif
}
public void In_case_of_failure_during_dump_import_data_is_rollbacked()
{
var dumpPath = "dump";
if (Directory.Exists(dumpPath))
{
Directory.Delete(dumpPath, true);
}
Directory.CreateDirectory(dumpPath);
using (var connector = new Connector(_clientConfig))
{
var dataSource = connector.DataSource <ProductEvent>();
var events = new List <ProductEvent>();
for (var i = 0; i < 100; i++)
{
switch (i % 3)
{
case 0:
events.Add(new FixingEvent(i, "AXA", 150, "EQ-256"));
break;
case 1:
events.Add(new FixingEvent(i, "TOTAL", 180, "IRD-400"));
break;
case 2:
events.Add(new Increase(i, 180, "EQ-256"));
break;
}
}
dataSource.PutMany(events);
var admin = connector.AdminInterface();
admin.Dump(dumpPath);
dataSource.Put(new FixingEvent(55555, "GLE", 180, "IRD-500"));
}
StopServers();
StartServers();
using (var connector = new Connector(_clientConfig))
{
var dataSource = connector.DataSource <ProductEvent>();
var eventAfterDump = dataSource[55555];
Assert.IsNotNull(eventAfterDump);
// simulate a failure on the 3rd node
Dbg.ActivateSimulation(100, 3);
var admin = connector.AdminInterface();
try
{
admin.ImportDump(dumpPath);
Assert.Fail("An exception was expected here");
}
catch (CacheException e)
{
Assert.IsTrue(e.Message.ToLower().Contains("simulation"));
}
eventAfterDump = dataSource[55555];
// this event was added after dump and it's still present as the dump was rolled-back
Assert.NotNull(eventAfterDump);
// check that it is still woking fine after rollback
dataSource.Put(new FixingEvent(66666, "GLE", 180, "IRD-500"));
var events = new[] { 55555, 66666 };
var evts = dataSource.Where(e => events.Contains(e.EventId)).ToList();
Assert.AreEqual(2, evts.Count);
}
StopServers();
StartServers();
// check thatr everything is persisted
using (var connector = new Connector(_clientConfig))
{
var dataSource = connector.DataSource <ProductEvent>();
var events = new[] { 55555, 66666 };
var evts = dataSource.Where(e => events.Contains(e.EventId)).ToList();
Assert.AreEqual(2, evts.Count);
}
}
