protected override async Task Write(TextWriter writer, string dataValue, ICitylineProducer provider, TicketHolder ticket, CancellationToken cancellationToken = default(CancellationToken))
{
using (var jsonWriter = new JsonTextWriter(writer)
{
Formatting = Formatting.None
})
{
await jsonWriter.WriteStartObjectAsync(cancellationToken);
await jsonWriter.WritePropertyNameAsync("id", cancellationToken);
await jsonWriter.WriteValueAsync(ticket.AsString(), cancellationToken);
await jsonWriter.WritePropertyNameAsync("event", cancellationToken);
await jsonWriter.WriteValueAsync(provider.Name, cancellationToken);
await jsonWriter.WritePropertyNameAsync("data", cancellationToken);
await jsonWriter.WriteValueAsync(dataValue, cancellationToken);
await jsonWriter.WriteEndObjectAsync(cancellationToken);
await writer.WriteAsync('\n');
}
}
protected BaseCitylineWriter(SemaphoreSlim semaphore, ICitylineProducer provider, Stream stream, TicketHolder ticket, CancellationToken cancellationToken = default)
{
this.semaphore = semaphore;
this.provider = provider;
this.stream = stream;
this.stream = stream;
this.ticket = ticket;
this.cancellationToken = cancellationToken;
}
protected override async Task Write(TextWriter writer, string dataValue, ICitylineProducer provider, TicketHolder ticket, CancellationToken cancellationToken = default(CancellationToken))
{
await writer.WriteLineAsync($"id: {ticket.AsString()}");
await writer.WriteLineAsync($"event: {provider.Name}");
await writer.WriteLineAsync($"data: {dataValue}");
await writer.WriteLineAsync("");
}
private async Task RunProducer(ICitylineProducer provider, Stream stream, TicketHolder ticket, IContext context, CancellationToken cancellationToken = default)
{
ICitylineWriter writer;
if (this.UseJson)
{
writer = new CitylineJsonWriter(semaphore, provider, stream, ticket, cancellationToken);
}
else
{
writer = new CitylineLineWriter(semaphore, provider, stream, ticket, cancellationToken);
}
// Func<object, Task> emitter = new Func<object, Task>(async obj =>
// {
// var value = JsonConvert.SerializeObject(obj, settings);
// try
// {
// await semaphore.WaitAsync(cancellationToken);
// using (var writer = new StreamWriter(stream, new UTF8Encoding(false), value.Length + 1024, true))
// {
// if (UseJson)
// await WriteJson(writer, value, provider, ticket, CancellationToken.None); // CancellationToken.None, we don't want partial messages
// else
// await WriteText(writer, value, provider, ticket, CancellationToken.None);
// }
// }
// finally
// {
// semaphore.Release();
// }
// });
// context is shared, so this wont work
var response = await provider.GetFrame(ticket, context, writer, cancellationToken);
if (response == null)
{
return;
}
await writer.Write(response);
}
private async Task RunProducer(ICitylineProducer provider, Stream stream, TicketHolder ticket, IContext context, CancellationToken cancellationToken = default)
{
var response = await provider.GetFrame(ticket, context, cancellationToken);
if (response == null)
{
return;
}
lock (padLock)
{
using (var writer = new StreamWriter(stream, new UTF8Encoding(false), 1024, true)) {
writer.WriteLine($"id: {ticket.AsString()}");
writer.WriteLine($"event: {provider.Name}");
writer.WriteLine($"data: {JsonConvert.SerializeObject(response, settings)}");
writer.WriteLine();
}
}
}
public CitylineJsonWriter(SemaphoreSlim semaphore, ICitylineProducer provider, Stream stream, TicketHolder ticket, CancellationToken cancellationToken = default) : base(semaphore, provider, stream, ticket, cancellationToken)
{
}
protected abstract Task Write(TextWriter writer, string dataValue, ICitylineProducer provider, TicketHolder ticket, CancellationToken cancellationToken);
