public void CanReplicateSegmentWithDataWhileStillServingRequestForSegment()
{
using (var storageProxy = new DistributedHashTableStorageClient(storageHost.Endpoint))
{
var topology = new DistributedHashTableMasterClient(masterUri).GetTopology();
storageProxy.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 1, 2, 3 },
Key = "test",
Segment = 1,
});
var result = storageProxy.ReplicateNextPage(NodeEndpoint.ForTest(13), ReplicationType.Ownership, 1);
Assert.Equal("test", result.PutRequests[0].Key);
storageProxy.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 1, 2, 3 },
Key = "test2",
Segment = 1,
});
result = storageProxy.ReplicateNextPage(NodeEndpoint.ForTest(13), ReplicationType.Ownership, 1);
Assert.Equal("test2", result.PutRequests[0].Key);
}
}
public void CanRemoveItem()
{
using (var storageProxy = new DistributedHashTableStorageClient(storageHost.Endpoint))
{
var masterProxy = new DistributedHashTableMasterClient(masterUri);
var topology = masterProxy.GetTopology();
var results = storageProxy.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 1, 2, 3, 4 },
Key = "test",
Segment = 1,
});
Assert.False(results[0].ConflictExists);
var removed = storageProxy.Remove(topology.Version, new ExtendedRemoveRequest
{
Key = "test",
SpecificVersion = results[0].Version,
Segment = 1
});
Assert.True(removed[0]);
var values = storageProxy.Get(topology.Version, new ExtendedGetRequest
{
Key = "test",
Segment = 1
});
Assert.Equal(0, values[0].Length);
}
}
public void WillReplicateValuesToSecondJoin()
{
var masterProxy = new DistributedHashTableMasterClient(masterUri);
using (var nodeA = new DistributedHashTableStorageClient(storageHostA.Endpoint))
{
Topology topology = masterProxy.GetTopology();
nodeA.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 2, 2, 0, 0 },
Key = "abc",
Segment = 1
});
}
storageHostB.Start(); //will replicate all odd segments here now
for (int i = 0; i < 500; i++)
{
Topology topology = masterProxy.GetTopology();
if (topology.Segments[1].AssignedEndpoint ==
storageHostB.Endpoint)
{
break;
}
Thread.Sleep(500);
}
Value[][] values = null;
RepeatWhileThereAreTopologyChangedErrors(() =>
{
using (var nodeB = new DistributedHashTableStorageClient(storageHostB.Endpoint))
{
Topology topology = masterProxy.GetTopology();
values = nodeB.Get(topology.Version, new ExtendedGetRequest
{
Key = "abc",
Segment = 1
});
}
});
Assert.Equal(new byte[] { 2, 2, 0, 0 }, values[0][0].Data);
}
public void WhenReplicatingEmptySegmentsWillNotReplicateSegmentsThatHasValues()
{
using (var storageProxy = new DistributedHashTableStorageClient(storageHost.Endpoint))
{
var topology = new DistributedHashTableMasterClient(masterUri).GetTopology();
storageProxy.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 1, 2, 3 },
Key = "test",
Segment = 1,
});
var segments = new[] { 1, 2, 3 };
var assignedSegments = storageProxy.AssignAllEmptySegments(NodeEndpoint.ForTest(13), ReplicationType.Ownership, segments);
Assert.Equal(new[] { 2, 3 }, assignedSegments);
}
}
public void WhenFinishedReplicatingWillTellTheReplicatorSo()
{
using (var storageProxy = new DistributedHashTableStorageClient(storageHost.Endpoint))
{
var topology = new DistributedHashTableMasterClient(masterUri).GetTopology();
storageProxy.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 1, 2, 3 },
Key = "test",
Segment = 1,
});
var result = storageProxy.ReplicateNextPage(NodeEndpoint.ForTest(13), ReplicationType.Ownership, 1);
Assert.Equal("test", result.PutRequests[0].Key);
result = storageProxy.ReplicateNextPage(NodeEndpoint.ForTest(13), ReplicationType.Ownership, 1);
Assert.True(result.Done);
}
}
public void AfterBothNodesJoinedWillAutomaticallyReplicateToBackupNode()
{
storageHostB.Start();
var masterProxy = new DistributedHashTableMasterClient(masterUri);
Topology topology;
for (int i = 0; i < 50; i++)
{
topology = masterProxy.GetTopology();
int count = topology.Segments
.Where(x => x.AssignedEndpoint == storageHostA.Endpoint)
.Count();
if (count == 4096)
{
break;
}
Thread.Sleep(500);
}
topology = masterProxy.GetTopology();
int segment = topology.Segments.First(x => x.AssignedEndpoint == storageHostA.Endpoint).Index;
RepeatWhileThereAreTopologyChangedErrors(() =>
{
using (var nodeA = new DistributedHashTableStorageClient(storageHostA.Endpoint))
{
nodeA.Put(topology.Version, new ExtendedPutRequest
{
Bytes = new byte[] { 2, 2, 0, 0 },
Key = "abc",
Segment = segment
});
}
});
RepeatWhileThereAreTopologyChangedErrors(() =>
{
using (var nodeB = new DistributedHashTableStorageClient(storageHostB.Endpoint))
{
topology = masterProxy.GetTopology();
Value[][] values = null;
for (int i = 0; i < 100; i++)
{
values = nodeB.Get(topology.Version, new ExtendedGetRequest
{
Key = "abc",
Segment = segment
});
if (values[0].Length != 0)
{
break;
}
Thread.Sleep(250);
}
Assert.Equal(new byte[] { 2, 2, 0, 0 }, values[0][0].Data);
}
});
}