public void HiLo_Modified_InReplicated_Scenario()
{
const string key = "Raven/Hilo/managers";
var store1 = CreateStore();
var store2 = CreateStore();
TellFirstInstanceToReplicateToSecondInstance();
TellSecondInstanceToReplicateToFirstInstance();
var hiLoKeyGenerator = new HiLoKeyGenerator("managers", 2)
{
DisableCapacityChanges = true
};
for (long i = 0; i < 4; i++)
{
Assert.Equal(i + 1, hiLoKeyGenerator.NextId(store1.DatabaseCommands));
}
WaitForReplication(store2, key);
var jsonDocument = store2.DatabaseCommands.Get(key);
store2.DatabaseCommands.Put(key, null, new RavenJObject
{
{"Max", 49}
}, jsonDocument.Metadata);
WaitForReplication(store1, key);
for (long i = 0; i < 4; i++)
{
Assert.Equal(i + 50, hiLoKeyGenerator.NextId(store1.DatabaseCommands));
}
}
public void HiLo_Modified_InReplicated_Scenario()
{
const string key = "Raven/Hilo/managers";
var store1 = CreateStore(configureStore: store => store.Conventions.FailoverBehavior = FailoverBehavior.ReadFromAllServers);
var store2 = CreateStore();
((DocumentStore) store1).GetReplicationInformerForDatabase()
.UpdateReplicationInformationIfNeeded((ServerClient) store1.DatabaseCommands)
.Wait();
((DocumentStore) store2).GetReplicationInformerForDatabase()
.UpdateReplicationInformationIfNeeded((ServerClient) store2.DatabaseCommands)
.Wait();
TellFirstInstanceToReplicateToSecondInstance();
TellSecondInstanceToReplicateToFirstInstance();
var hiLoKeyGenerator = new HiLoKeyGenerator("managers", 2)
{
DisableCapacityChanges = true
};
for (long i = 0; i < 4; i++)
{
Assert.Equal(i + 1, hiLoKeyGenerator.NextId(store1.DatabaseCommands));
}
WaitForReplication(store2, session =>
{
var load = session.Load<dynamic>(key);
return load != null && load.Max == 4;
});
var jsonDocument = store2.DatabaseCommands.Get(key);
store2.DatabaseCommands.Put(key, null, new RavenJObject
{
{"Max", 49}
}, jsonDocument.Metadata);
WaitForReplication(store1, session => session.Load<dynamic>(key).Max == 49);
for (long i = 0; i < 4; i++)
{
var nextId = hiLoKeyGenerator.NextId(store1.DatabaseCommands);
Assert.Equal(i + 50, nextId);
}
}
public void FromScratch()
{
using(var store = NewDocumentStore())
{
var generator = new HiLoKeyGenerator("users", 3);
for (long i = 0; i < 50; i++)
{
Assert.Equal(i + 1, generator.NextId(store.DatabaseCommands));
}
}
}
public void SequentialGeneration_NoClashesOrGaps()
{
using (GetNewServer())
using (var store = new DocumentStore
{
Url = "http://localhost:8079"
}.Initialize())
{
var gen = new HiLoKeyGenerator("When_generating_lots_of_keys_concurrently_there_are_no_clashes", 2);
Test(() => gen.NextId(store.DatabaseCommands), 1, GeneratedIdCount);
}
}
public void HiloCannotGoDown()
{
using (var store = NewDocumentStore())
{
store.DatabaseCommands.Put(
"Raven/Hilo/Users", null,
new RavenJObject
{
{"Max", 32}
},
new RavenJObject());
var hiLoKeyGenerator = new HiLoKeyGenerator("Users", 32);
var ids = new HashSet<long> { hiLoKeyGenerator.NextId(store.DatabaseCommands) };
store.DatabaseCommands.Put(
"Raven/Hilo/Users", null,
new RavenJObject
{
{"Max", 12}
},
new RavenJObject());
for (int i = 0; i < 128; i++)
{
Assert.True(ids.Add(hiLoKeyGenerator.NextId(store.DatabaseCommands)), "Failed at " + i);
}
var list = ids.GroupBy(x => x).Select(g => new
{
g.Key,
Count = g.Count()
}).Where(x => x.Count > 1).ToList();
Assert.Empty(list);
}
}
public void ConcurrentWillNoGenerateConflicts()
{
using (var store = NewDocumentStore())
{
var generator1 = new HiLoKeyGenerator("users", 3);
var generator2 = new HiLoKeyGenerator("users", 3);
var dic = new Dictionary<long, int>();
for (long i = 0; i < 50; i++)
{
dic.Add(generator1.NextId(store.DatabaseCommands), 1);
dic.Add(generator2.NextId(store.DatabaseCommands), 1);
}
}
}
public void CanUpgradeFromOldHiLo()
{
using (var store = NewDocumentStore())
{
store.DatabaseCommands.Put("Raven/Hilo/users", null,
RavenJObject.FromObject(new{ ServerHi = 2}),
new RavenJObject());
var generator = new HiLoKeyGenerator("users", 1024);
for (long i = 0; i < 50; i++)
{
Assert.Equal((i + 1) + 1024, generator.NextId(store.DatabaseCommands));
}
}
}
public void ShouldResolveConflictWithHighestNumber()
{
using (var server = GetNewServer())
using (var store = new DocumentStore
{
Url = "http://*****:*****@Http-Status-Code"
,
409
},
{
"@Http-Status-Description"
, "Conflicted doc"
}
});
});
var hiLoKeyGenerator = new HiLoKeyGenerator("Users", 32);
var nextId = hiLoKeyGenerator.NextId(store.DatabaseCommands);
Assert.Equal(65, nextId);
}
}