public async Task <bool> RecordAsync <T>(T @event, string streamName)
{
string objAsJson = _serializer.Serialize(@event);
byte[] objAsBytes = Encoding.UTF8.GetBytes(objAsJson + "\n");
using (var ms = new MemoryStream(objAsBytes))
{
var record = new Record {
Data = ms
};
var request = new PutRecordRequest
{
DeliveryStreamName = streamName,
Record = record
};
PutRecordResponse response = await _client.PutRecordAsync(request);
if (response.HttpStatusCode != HttpStatusCode.OK)
{
throw new System.Exception($"Error sending message. HttpStatusCode: {response.HttpStatusCode}");
}
}
return(true);
}
/// <summary>
/// Sends sensor data to AWS Kinesis Firehose.
/// </summary>
/// <param name="temp">Temperature value</param>
/// <param name="hum">Humidity value</param>
/// <param name="bat">Battery level</param>
private async void SendMessageToAWSFirehose(double temp, uint hum, uint bat)
{
// Check that the client is not null (might be if initialization failed)
if (_client != null)
{
PutRecordRequest req = new PutRecordRequest();
req.DeliveryStreamName = AWS_DELIVERY_STREAM;
// Create the message
// Message format: ISO timestamp, temperature, humidity, battery
String data = String.Format("{0},{1},{2},{3}\n", DateTime.UtcNow.ToString("u"), temp, hum, bat);
try
{
var record = new Record
{
Data = new MemoryStream(UTF8Encoding.UTF8.GetBytes(data))
};
req.Record = record;
await _client.PutRecordAsync(req);
}
catch (Exception e)
{
// Notify the user
await this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
statusText.Text = string.Format("Error sending data to cloud: {0}", e.ToString());
});
}
}
}
private static Task <PutRecordResponse> PutRecordAsync(Guid id)
{
var data = "{\"id\": \"" + id + "\"}";
// convert string to stream
var byteArray = Encoding.UTF8.GetBytes(data);
var putRecordRequest = new PutRecordRequest
{
DeliveryStreamName = "generic_event_stream", // AWS console -> Data FIrehose -> "Firehose delivery streams"
Record = new Record
{
Data = new MemoryStream(byteArray)
}
};
// Put record into the DeliveryStream
Console.WriteLine($"PutRecordAsync: {data}");
return(_firehoseClient.PutRecordAsync(putRecordRequest));
}
private Amazon.KinesisFirehose.Model.PutRecordResponse CallAWSServiceOperation(IAmazonKinesisFirehose client, Amazon.KinesisFirehose.Model.PutRecordRequest request)
{
Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon Kinesis Firehose", "PutRecord");
try
{
#if DESKTOP
return(client.PutRecord(request));
#elif CORECLR
return(client.PutRecordAsync(request).GetAwaiter().GetResult());
#else
#error "Unknown build edition"
#endif
}
catch (AmazonServiceException exc)
{
var webException = exc.InnerException as System.Net.WebException;
if (webException != null)
{
throw new Exception(Utils.Common.FormatNameResolutionFailureMessage(client.Config, webException.Message), webException);
}
throw;
}
}
