private async void ReturnResult(Messages.TransformSeries msg)
{
HttpClient client = null;
var json = JsonConvert.SerializeObject(msg);
_log.Debug($"Returning result to vmstatsGUI. Message received is: {json}");
try
{
// Contact the vmstatsgui webserver and send it the details or the completed transform pipeline
client = new HttpClient();
client.BaseAddress = new Uri(guiWebserverUrl);
// Add an Accept header for JSON format.
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
// Create a new ProcessCommand with the supplied data
// TODO plumb the vmname and date throughout the chain so it gets back to the client
bool isRaw = (msg.GroupID == Guid.Empty) ? true : false;
var result = new Messages.Result(msg.ConnectionId, msg.Measurements.Values.Keys.ToArray(), msg.Measurements.Values.Values.ToArray(),
isRaw, msg.VmName, msg.VmDate, msg.Measurements.Name);
string postBody = JsonConvert.SerializeObject(result);
_log.Debug($"Returning result to vmstatsGUI. Result is: {postBody}");
// Send the results to the vmstatsGUI
HttpResponseMessage response = await client.PostAsync(guiWebserverUrl, new StringContent(postBody, Encoding.UTF8, "application/json"));
if (response.IsSuccessStatusCode)
{
_log.Info("Successfully returned the result of a transform seriues to the vmstatsGUI.");
}
else
{
_log.Error($"Failed to ReturnResult to vmstatsGUI. Reason: {response.ReasonPhrase}");
}
}
catch (HttpRequestException hre)
{
_log.Error($"ERROR Calling vmstatsgui webserver. Error is: {hre.Message}. The URI used is {guiWebserverUrl}");
}
catch (TaskCanceledException tce)
{
_log.Error($"ERROR Calling vmstatsgui webserver. Error is: {tce.Message}. The URI used is {guiWebserverUrl}");
}
catch (Exception ex)
{
_log.Error($"ERROR Calling vmstatsgui webserver. Error is: {ex.Message}. The URI used is {guiWebserverUrl}");
}
finally
{
if (client != null)
{
client.Dispose();
client = null;
}
}
}
/// <summary>
/// This method receives the metrics produced by the vmstats component, from the data it holds and the DSL passed to it from the client. This method
/// formats the correct response and then calls the client code in the browser using SignalR.
/// </summary>
public async Task ReturnResultToClient([FromBody] Messages.Result msg)
{
Console.WriteLine("Received TransformSeries");
var jsonRequest = JsonConvert.SerializeObject(msg);
Console.WriteLine($"Received ReturnResultToClient. Message is: {jsonRequest}");
// Convert the time to strings only showing hour and minute
string[] times = new string[msg.Xdata.Length];
for (int i = 0; i < msg.Xdata.Length; i++)
{
DateTime newDate = new DateTime(msg.Xdata[i]);
times[i] = newDate.ToString("HH:mm");
}
// Add the day of week to the date
DateTime dowDate = Convert.ToDateTime(msg.Date);
string dow = dowDate.ToString("ddd");
// Send the correct information back to the client to display the graph
await context.Clients.Client(msg.ConnectionId).SendAsync("DisplayGraph", msg.IsRaw, times, msg.Ydata, msg.VmName, msg.Date + "-" + dow, msg.MetricName);
}
