private async IAsyncEnumerable <T> Impl([EnumeratorCancellation] CancellationToken cancellationToken = default)
{
if (Replay)
{
for (var i = 0; i < _stream.StoredData.Count; i++) // Not using foreach, as StoredData can change asynchronously
{
var value = FakeConfiguration.Deserialize <T>(_stream.StoredData[i]);
if (Filter(value))
{
// NOTE: We are not saving state entries here
yield return(value);
}
}
}
// NOTE: Race condition: can miss elements while switching from replay to realtime
await foreach (var i in _stream.GetChannel().ReadAllAsync())
{
var value = FakeConfiguration.Deserialize <T>(_stream.StoredData[i]);
if (Filter(value))
{
// NOTE: We are not saving state entries here
yield return(value);
}
}
}
internal async Task <TResult> CallAsync <TParams, TResult>(string functionDelegate, TParams parameters)
{
if (!functions.TryGetValue(functionDelegate, out var function))
{
throw new IndexOutOfRangeException("Function '" + functionDelegate + "' is not registered.");
}
var input = FakeConfiguration.Serialize(parameters);
var result = await function(input);
return(FakeConfiguration.Deserialize <TResult>(result));
}
public static (IStream <T>, string) CreateBlankStream <T>()
{
var channel = Channel.CreateUnbounded <object?>();
var stream = new FakeStream <T>(channel.Reader.ReadAllAsync().Select(x => FakeConfiguration.Deserialize <T>(x)));
var name = $"-{Guid.NewGuid()}";
blankStreams[name] = channel.Writer;
return(stream, name);
}
public FakeAgent RegisterFunction <TParams>(string functionDelegate, Func <TParams, Task> function)
{
functions.Add(functionDelegate, async(input) => { await function(FakeConfiguration.Deserialize <TParams>(input)); return(null); });
return(this);
}
public FakeAgent RegisterFunction <TParams>(string functionDelegate, Action <TParams> function)
{
functions.Add(functionDelegate, (input) => { function(FakeConfiguration.Deserialize <TParams>(input)); return(Task.FromResult <object?>(null)); });
return(this);
}
public FakeAgent RegisterFunction <TParams, TResult>(string functionDelegate, Func <TParams, TResult> function)
{
functions.Add(functionDelegate, (input) => Task.FromResult(FakeConfiguration.Serialize(function(FakeConfiguration.Deserialize <TParams>(input)))));
return(this);
}
public void SetValue <T>(string key, T value)
{
Values[key] = FakeConfiguration.Serialize(value);
}
public T GetValue <T>(string key, Func <T> defaultValueFactory)
{
return(FakeConfiguration.Deserialize <T>(Values.GetOrAdd(key, _k => FakeConfiguration.Serialize(defaultValueFactory()))));
}
public T GetValue <T>(string key)
{
return(FakeConfiguration.Deserialize <T>(Values[key]));
}
public async Task AddAsync(T item, CancellationToken cancellationToken = default)
{
await _channelWriter.WriteAsync(FakeConfiguration.Serialize(item), cancellationToken);
}