protected bool TryApply(MutationPacket mutationPacket, out Mutation mutation, out MutationResult result)
{
FragmentKey key = fragmentKeyFactory.FromBytes(mutationPacket.GetKey());
mutation = mutationFactory.FromBytes(mutationPacket.GetPayload());
result = mutation.Mutate(state, key, mutationPacket.GetRequester());
if (result.IsFailure())
{
return(false);
}
if (result.IsSuccess())
{
bool isUpdate = state.ContainsKey(key);
state = state.CloneWith(key, result.GetFragment());
if (isUpdate)
{
SafeInvoker.Invoke(log, OnFragmentUpdatedCallback, result.GetFragment(), state, key, mutation);
}
else
{
SafeInvoker.Invoke(log, OnFragmentInsertedCallback, result.GetFragment(), state, key, mutation);
}
}
else if (result.IsDelete())
{
if (state.ContainsKey(key))
{
state = state.CloneWithout(key);
SafeInvoker.Invoke(log, OnFragmentDeletedCallback, state, key, mutation);
}
}
SafeInvoker.Invoke(log, OnStateChangedCallback, state, key, mutation);
return(true);
}
public Guid Request(FragmentKey key, Mutation mutation)
{
if (!isAttached)
{
throw log.ExitError(new Exception("Cannot Request the mutation of a fragment if the Karmax container is no longer attached to the Server."));
}
Guid mutationId = Guid.NewGuid();
byte[] keyBytes = fragmentKeyFactory.GetBytes(key);
byte[] payload = mutationFactory.GetBytes(mutation);
MutationPacket mutationPacket = new MutationPacket(mutationId, containerId, keyBytes, payload);
Request(mutationPacket, mutation);
return(mutationId);
}
private void HandleMutationBy(MutationPacket mutationPacket, Guid requester)
{
if (!TryApply(mutationPacket, out Mutation mutation, out MutationResult result))
{
if (requester.Equals(Guid.Empty))
{
log.Warning($"Mutation[{mutationPacket.GetId()}] failed. Reason: {result.GetFailureReason()}. Details: {mutation.GetType().Name} on fragment[{fragmentKeyFactory.FromBytes(mutationPacket.GetKey()).AsString()}].\nStackTrace: {Environment.StackTrace}");
SafeInvoker.Invoke(log, OnMutationFailedCallback, mutationPacket.GetId(), result.GetFailureReason());
}
else
{
server.Send(requester, new MutationFailedPacket(mutationPacket.GetId(), result.GetFailureReason()));
}
return;
}
server.Broadcast(mutationPacket);
}
protected abstract void Request(MutationPacket mutationPacket, Mutation mutation);
protected override void Request(MutationPacket mutationPacket, Mutation mutation)
{
HandleMutationBy(mutationPacket, Guid.Empty);
}
protected override void Request(MutationPacket mutationPacket, Mutation mutation)
{
client.Send(mutationPacket);
pending.Add(mutationPacket.GetId(), $"{mutation.GetType().Name} on fragment[{fragmentKeyFactory.FromBytes(mutationPacket.GetKey()).AsString()}].\nStackTrace: {Environment.StackTrace}");
}