private async Task ReceiveMessagesFromDeviceAsync(string partition, CancellationToken ct)
{
var eventHubReceiver = eventHubClient.GetDefaultConsumerGroup().CreateReceiver(partition, DateTime.UtcNow);
while (true)
{
if (ct.IsCancellationRequested)
{
break;
}
EventData eventData = await eventHubReceiver.ReceiveAsync();
if (eventData == null)
{
continue;
}
var data = Encoding.UTF8.GetString(eventData.GetBytes());
Debug.WriteLine("Message received. Partition: {0} Data: '{1}'", partition, data);
var temperature = JsonConvert.DeserializeObject <TemperatureData>(data);
temperature.PartitionId = partition;
var hub = new TemperatureHub();
await hub.NotifyClient(temperature);
}
}
public TemperatureController(IOptions <CouchbaseOptions> couchbaseOptions, TemperatureHub temperatureHub)
{
_temperatureHub = temperatureHub;
_bucket = ClusterHelper.GetBucket(couchbaseOptions.Value.CouchbaseBucket);
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, JsonSerializerOptions serializerOptions, IHttpClientFactory clientFactory, TemperatureHub temperatureHub)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseRouting();
app.UseCors(builder =>
builder
.AllowAnyOrigin()
.AllowAnyHeader()
.AllowAnyMethod());
// app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseEndpoints(endpoints =>
{
endpoints.MapHub <TemperatureHub>("/temperatureHub");
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapSubscribeHandler();
endpoints.MapPost("readings-input", Readings).WithTopic("readings");
});
async Task Readings(HttpContext context)
{
var tempReading = await JsonSerializer.DeserializeAsync <dynamic>(context.Request.Body, serializerOptions);
var reading = new
{
Date = DateTime.Now,
Temperature = tempReading.Data.Temperature
};
await temperatureHub.SendMessage(JsonSerializer.Serialize(reading));
context.Response.ContentType = "application/json";
await JsonSerializer.SerializeAsync(context.Response.Body, string.Empty, serializerOptions);
}
}
