public static async Task MessageReceiver(
[EventHubTrigger(c_eventHubName, Connection = c_eventHubConnectionString)] EventData message,
[Table(c_tableName)] CloudTable cloudTable,
[SignalR(HubName = c_eventHubName, ConnectionStringSetting = c_signalRConnectionString)] IAsyncCollector <SignalRMessage> signalRMessages,
ILogger log)
{
try
{
log.LogInformation($"Incoming request to {nameof(MessageReceiver)}");
var counterProvider = new CounterProvider();
// get counter
var counter = await counterProvider.GetCounter(cloudTable, "counter");
// update counter value
counter.Count++;
log.LogInformation($"New counter value {counter.Count}");
// write counter to table
var updateTask = counterProvider.UpdateCounter(cloudTable, counter);
// update signal r
var sendMessageTask = SendSignlRMessage(signalRMessages, counter.ToDTO());
await Task.WhenAll(updateTask, sendMessageTask);
}
catch (Exception ex)
{
log.LogError(ex, $"Exception in {nameof(MessageReceiver)}: {ex.Message}");
}
}
public static async Task <HttpResponseMessage> UpdateCounter(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequestMessage req,
[Table(c_tableName)] CloudTable cloudTable,
[SignalR(HubName = c_eventHubName, ConnectionStringSetting = c_signalRConnectionString)] IAsyncCollector <SignalRMessage> signalRMessages,
ILogger log)
{
try
{
log.LogInformation($"Incoming request to {nameof(UpdateCounter)}");
var dto = await ExtractContent <CounterDTO>(req);
var counter = (Counter)dto;
var counterProvider = new CounterProvider();
// write counter to table
var updateTask = counterProvider.UpdateCounter(cloudTable, counter);
// update signal r
var sendMessageTask = SendSignlRMessage(signalRMessages, counter.ToDTO());
await Task.WhenAll(updateTask, sendMessageTask);
}
catch (Exception ex)
{
log.LogError(ex, $"Exception in {nameof(UpdateCounter)}: {ex.Message}");
return(req.CreateResponse(HttpStatusCode.InternalServerError));
}
return(req.CreateResponse(HttpStatusCode.OK));
}
public static async Task <HttpResponseMessage> GetCounter(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = null)] HttpRequestMessage req,
[Table(c_tableName)] CloudTable cloudTable,
ILogger log)
{
try
{
log.LogInformation($"Incoming request to {nameof(GetCounter)}");
var counterProvider = new CounterProvider();
var id = req.RequestUri.ParseQueryString()["id"];
// write counter to table
var counter = await counterProvider.GetCounter(cloudTable, id);
return(req.CreateResponse(HttpStatusCode.OK, counter.ToDTO()));
}
catch (Exception ex)
{
log.LogError(ex, $"Exception in {nameof(GetCounter)}: {ex.Message}");
return(req.CreateResponse(HttpStatusCode.InternalServerError));
}
}