public void BackplaneMessage_DeserializeInvalidBytes_InvalidString()
{
// arrange clear region with wrong region string
var data = new byte[] { 4, 0, 0, 0, 1, 2, 3, 4, 3, 10, 0, 0, 0, 42 };
Action act = () => BackplaneMessage.Deserialize(data).First();
act.ShouldThrow <IndexOutOfRangeException>().WithMessage("*Cannot read string,*");
}
public void BackplaneMessage_DeserializeInvalidBytes_NoAction()
{
// arrange
var data = new byte[] { 4, 0, 0, 0, 1, 2, 3, 4 };
Action act = () => BackplaneMessage.Deserialize(data).First();
act.ShouldThrow <IndexOutOfRangeException>().WithMessage("*Cannot read byte,*");
}
public void BackplaneMessage_DeserializeInvalidBytes_WrongAction()
{
// arrange
var data = new byte[] { 4, 0, 0, 0, 1, 2, 3, 4, 255 };
Action act = () => BackplaneMessage.Deserialize(data).First();
act.ShouldThrow <ArgumentException>().WithMessage("*invalid message type*");
}
public void BackplaneMessage_Mulitple_IgnoreOwner()
{
// arrange
var owner = new byte[] { 1, 2, 3, 4 };
var messages = CreateMany(owner);
var serialized = BackplaneMessage.Serialize(messages.ToArray());
var deserialized = BackplaneMessage.Deserialize(serialized, skipOwner: owner).ToArray();
messages.Count.Should().Be(41);
deserialized.Length.Should().Be(0);
}
public void BackplaneMessage_Mulitple()
{
// arrange
var owner = new byte[] { 1, 2, 3, 4 };
var messages = CreateMany(owner);
var serialized = BackplaneMessage.Serialize(messages.ToArray());
var deserialized = BackplaneMessage.Deserialize(serialized).ToArray();
messages.Count.Should().Be(41);
deserialized.ShouldAllBeEquivalentTo(messages);
}
public void BackplaneMessage_Clear()
{
// arrange
var owner = new byte[] { 1, 2, 3, 4 };
var msg = BackplaneMessage.ForClear(owner);
// act
var serialized = BackplaneMessage.Serialize(msg);
var deserialized = BackplaneMessage.Deserialize(serialized).First();
// assert
deserialized.Key.Should().Be(null);
deserialized.Region.Should().Be(null);
deserialized.ChangeAction.Should().Be(CacheItemChangedEventAction.Invalid);
deserialized.Action.Should().Be(BackplaneAction.Clear);
deserialized.OwnerIdentity.ShouldBeEquivalentTo(owner);
deserialized.ShouldBeEquivalentTo(msg);
}
public void BackplaneMessage_ChangePutKey()
{
// arrange
var owner = new byte[] { 1, 2, 3, 4 };
var key = Guid.NewGuid().ToString();
var msg = BackplaneMessage.ForChanged(owner, key, CacheItemChangedEventAction.Put);
// act
var serialized = BackplaneMessage.Serialize(msg);
var deserialized = BackplaneMessage.Deserialize(serialized).First();
// assert
deserialized.Key.Should().Be(key);
deserialized.Region.Should().Be(null);
deserialized.ChangeAction.Should().Be(CacheItemChangedEventAction.Put);
deserialized.Action.Should().Be(BackplaneAction.Changed);
deserialized.OwnerIdentity.ShouldBeEquivalentTo(owner);
deserialized.ShouldBeEquivalentTo(msg);
}
public void DeserializeChangeRegion()
{
var msg = BackplaneMessage.Deserialize(_rawSingleChangeRegion).ToArray();
}
public void DeserializeMany()
{
var messages = BackplaneMessage.Deserialize(_multipleSerialized).ToArray();
}
public void DeserializeRemove()
{
var msg = BackplaneMessage.Deserialize(_rawSingleRemove).ToArray();
}
public void DeserializeClear()
{
var msg = BackplaneMessage.Deserialize(_rawSingleClear).ToArray();
}
public PublishSusbcribeCacheManagerBackplane(
IPublishSubscribe publishSubscribe,
ILoggerFactory loggerFactory,
ICacheManagerConfiguration configuration) : base(configuration)
{
NotNull(configuration, nameof(publishSubscribe));
NotNull(loggerFactory, nameof(loggerFactory));
NotNull(loggerFactory, nameof(loggerFactory));
_publishSubscribe = publishSubscribe;
_channelName = configuration.BackplaneChannelName ?? "CacheManagerBackplane";
_identifier = Encoding.UTF8.GetBytes(Guid.NewGuid().ToString());
ILogger logger = loggerFactory.CreateLogger(this);
_subscription = publishSubscribe
.Observe <byte[]>(_channelName)
.SelectMany(serializedBackplaneMessage => BackplaneMessage.Deserialize(serializedBackplaneMessage.Data, _identifier))
.Subscribe(message =>
{
if (logger.IsEnabled(LogLevel.Information))
{
logger.LogInfo("Backplane got notified with new message.");
}
switch (message.Action)
{
case BackplaneAction.Clear:
TriggerCleared();
break;
case BackplaneAction.ClearRegion:
TriggerClearedRegion(message.Region);
break;
case BackplaneAction.Changed:
if (string.IsNullOrWhiteSpace(message.Region))
{
TriggerChanged(message.Key, message.ChangeAction);
}
else
{
TriggerChanged(message.Key, message.Region, message.ChangeAction);
}
break;
case BackplaneAction.Removed:
if (string.IsNullOrWhiteSpace(message.Region))
{
TriggerRemoved(message.Key);
}
else
{
TriggerRemoved(message.Key, message.Region);
}
break;
}
});
}
