/// <summary>
/// starts a continues stream until cancellation token is sent in
/// </summary>
/// <param name="url"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task StartStreamAsync(string url, CancellationToken cancellationToken)
{
try
{
// reporting data
var data = new ReportingData
{
DateStartTime = DateTime.Now.TimeOfDay,
};
var request = new HttpRequestMessage(HttpMethod.Get, url);
var response = await _client.SendAsync(
request,
HttpCompletionOption.ResponseHeadersRead);
var body = await response.Content.ReadAsStreamAsync();
using var reader = new StreamReader(body);
while (!reader.EndOfStream && !cancellationToken.IsCancellationRequested)
{
var tweet = reader.ReadLine();
var currentTweet = JsonConvert.DeserializeObject <TwitterResponse>(tweet);
// make sure the current tweet is not null
if (currentTweet != null && currentTweet.Data != null)
{
data.CurrentTweet = currentTweet;
OnProcessCompleted(data);// notify
}
}
}
catch (Exception ex)
{
throw new Exception($"Unable to process stream: {ex.Message}");
}
}
/// <summary>
/// report on the data
/// </summary>
/// <param name="e"></param>
private void OnProcessCompleted(ReportingData e)
{
ReportingData?.Invoke(this, e);
}