public async Task WriteAsync(object value)
{
if (!(_readyTaskCompletionSource.Task.IsCompleted && !(_readyTaskCompletionSource.Task.IsCanceled || _readyTaskCompletionSource.Task.IsFaulted)))
{
await _readyTaskCompletionSource.Task;
}
await _ndjsonTextWriter.WriteAsync(value);
}
/// <summary>
/// Asynchronously writes the specified value to the stream.
/// </summary>
/// <param name="value">The value.</param>
/// <param name="cancellationToken">A token that may be used to cancel the write operation.</param>
/// <returns>A <see cref="Task"/> that represents the asynchronous write operation.</returns>
public async Task WriteAsync(object value, CancellationToken cancellationToken)
{
if (!_readyTaskCompletionSource.Task.IsCompletedSuccessfully)
{
await _readyTaskCompletionSource.Task;
}
await _ndjsonTextWriter.WriteAsync(value, cancellationToken);
}
/// <summary>
/// Executes the result operation of the action method asynchronously. This method is called by MVC to process the result of an action method.
/// </summary>
/// <param name="context">The <see cref="ActionContext"/> in which the result is executed. The context information includes information about the action that was executed and request information.</param>
/// <returns>A <see cref="Task"/> that represents the asynchronous execute operation.</returns>
public override async Task ExecuteResultAsync(ActionContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
INdjsonWriterFactory ndjsonTextWriterFactory = context.HttpContext.RequestServices.GetRequiredService <INdjsonWriterFactory>();
using (INdjsonWriter ndjsonTextWriter = ndjsonTextWriterFactory.CreateWriter(context, this))
{
await foreach (object value in _values)
{
await ndjsonTextWriter.WriteAsync(value);
}
}
}
/// <summary>
/// Executes the result operation of the action method asynchronously. This method is called by MVC to process the result of an action method.
/// </summary>
/// <param name="context">The <see cref="ActionContext"/> in which the result is executed. The context information includes information about the action that was executed and request information.</param>
/// <returns>A <see cref="Task"/> that represents the asynchronous execute operation.</returns>
public override async Task ExecuteResultAsync(ActionContext context)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
INdjsonWriterFactory ndjsonTextWriterFactory = context.HttpContext.RequestServices.GetRequiredService <INdjsonWriterFactory>();
using INdjsonWriter <T> ndjsonTextWriter = ndjsonTextWriterFactory.CreateWriter <T>(context, this);
try
{
await foreach (T value in _values.WithCancellation(context.HttpContext.RequestAborted))
{
await ndjsonTextWriter.WriteAsync(value, context.HttpContext.RequestAborted);
}
}
catch (OperationCanceledException) when(context.HttpContext.RequestAborted.IsCancellationRequested)
{
}
}