/// <summary>
/// Try to end a particular call.
/// </summary>
/// <param name="callLegId">
/// The call leg id.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public async Task TryDeleteCallAsync(string callLegId)
{
CallHandlers.TryGetValue(callLegId, out CallHandler handler);
if (handler == null)
{
return;
}
try
{
await handler.Call.DeleteAsync().ConfigureAwait(false);
graphLogger.Info("Delete call finished.");
}
catch (Exception ex)
{
graphLogger.Error(ex, $"Exception happened when delete the call {callLegId}");
// in case the call deletion is failed, force remove the call in memory.
Client.Calls().TryForceRemove(callLegId, out _);
throw;
}
}
public SampleObserver(IGraphLogger logger)
{
// Log unhandled exceptions.
AppDomain.CurrentDomain.UnhandledException += (_, e) => logger.Error(e.ExceptionObject as Exception, $"Unhandled exception");
TaskScheduler.UnobservedTaskException += (_, e) => logger.Error(e.Exception, "Unobserved task exception");
this.subscription = logger.Subscribe(this);
}
/// <summary>
/// Creates the video buffers from the provided h264 files.
/// </summary>
/// <param name="currentTick">The number of ticks that represent the current date and time.</param>
/// <param name="videoFormats">The encoded video source formats.</param>
/// <param name="replayed">If the video frame is being replayed.</param>
/// <param name="logger">Graph logger.</param>
/// <returns>The newly created list of <see cref="VideoMediaBuffer"/>.</returns>
public static List <VideoMediaBuffer> CreateVideoMediaBuffers(
long currentTick,
List <VideoFormat> videoFormats,
bool replayed,
IGraphLogger logger)
{
List <VideoMediaBuffer> videoMediaBuffers = new List <VideoMediaBuffer>();
try
{
foreach (var videoFormat in videoFormats)
{
if (H264Frames.TryGetValue(videoFormat.GetId(), out List <H264Frame> h264Frames))
{
// create the videoBuffers
var packetSizeInMs = (long)((MsInOneSec / videoFormat.FrameRate) * TicksInOneMs);
var referenceTime = currentTick;
if (replayed)
{
referenceTime += packetSizeInMs;
}
foreach (var h264Frame in h264Frames)
{
var frameSize = h264Frame.Size;
byte[] buffer = new byte[frameSize];
Marshal.Copy(h264Frame.Data, buffer, 0, (int)frameSize);
videoMediaBuffers.Add(new VideoSendBuffer(buffer, (uint)buffer.Length, videoFormat, referenceTime));
referenceTime += packetSizeInMs;
}
}
else
{
logger.Error($"h264FileReader not found for the videoFromat {videoFormat}");
}
}
logger.Info($"created {videoMediaBuffers.Count} VideoMediaBuffers");
return(videoMediaBuffers);
}
catch (Exception ex)
{
logger.Error(ex, $"Failed to create the videoMediaBuffers with exception");
}
return(videoMediaBuffers);
}
/// <summary>
/// Extension for Task to execute the task in background and log any exception.
/// </summary>
/// <param name="task">Task to execute and capture any exceptions.</param>
/// <param name="logger">Graph logger.</param>
/// <param name="description">Friendly description of the task for debugging purposes.</param>
/// <param name="memberName">Calling function.</param>
/// <param name="filePath">File name where code is located.</param>
/// <param name="lineNumber">Line number where code is located.</param>
/// <returns>
/// A <see cref="Task" /> representing the asynchronous operation.
/// </returns>
public static async Task ForgetAndLogExceptionAsync(
this Task task,
IGraphLogger logger,
string description = null,
[CallerMemberName] string memberName = null,
[CallerFilePath] string filePath = null,
[CallerLineNumber] int lineNumber = 0)
{
try
{
await task.ConfigureAwait(false);
logger?.Verbose(
$"Completed running task successfully: {description ?? string.Empty}",
memberName: memberName,
filePath: filePath,
lineNumber: lineNumber);
}
catch (Exception e)
{
// Log and absorb all exceptions here.
logger?.Error(
e,
$"Caught an Exception running the task: {description ?? string.Empty}",
memberName: memberName,
filePath: filePath,
lineNumber: lineNumber);
}
}
/// <summary>
/// Boots this instance.
/// </summary>
public void Boot()
{
DotNetEnv.Env.Load(new DotNetEnv.Env.LoadOptions(parseVariables: false));
var builder = new ConfigurationBuilder();
// tell the builder to look for the appsettings.json file
builder
.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables();
var configuration = builder.Build();
ServiceCollection = new ServiceCollection();
ServiceCollection.AddCoreServices(configuration);
ServiceProvider = ServiceCollection.BuildServiceProvider();
_logger = Resolve <IGraphLogger>();
try
{
_settings = Resolve <IOptions <AzureSettings> >().Value;
_settings.Initialize();
Resolve <IEventPublisher>();
_botService = Resolve <IBotService>();
}
catch (Exception e)
{
_logger.Error(e, "Unhandled exception in Boot()");
}
}
/// <summary>
/// Starts the server.
/// </summary>
public void StartServer()
{
try
{
_botService.Initialize();
var callStartOptions = new StartOptions();
foreach (var url in ((AzureSettings)_settings).CallControlListeningUrls)
{
callStartOptions.Urls.Add(url);
_logger.Info("Listening on: {url}", url);
}
_callHttpServer = WebApp.Start(
callStartOptions,
(appBuilder) =>
{
var startup = new HttpConfigurationInitializer();
startup.ConfigureSettings(appBuilder, _logger);
});
}
catch (Exception e)
{
_logger.Error(e, "Unhandled exception in StartServer()");
throw;
}
}
#pragma warning disable AvoidAsyncVoid // Avoid async void
/// <summary>
/// Extension for Task to execute the task in background and log any exception.
/// </summary>
/// <param name="task">The task.</param>
/// <param name="logger">The logger.</param>
/// <param name="description">The description.</param>
/// <param name="memberName">Name of the member.</param>
/// <param name="filePath">The file path.</param>
/// <param name="lineNumber">The line number.</param>
public static async void ForgetAndLogException(
this Task task,
IGraphLogger logger,
string description = null,
[CallerMemberName] string memberName = null,
[CallerFilePath] string filePath = null,
[CallerLineNumber] int lineNumber = 0)
{
try
{
await task.ConfigureAwait(false);
}
catch (Exception ex)
{
description = string.IsNullOrWhiteSpace(description)
? "Exception while executing task."
: description;
logger.Error(
ex,
description,
memberName: memberName,
filePath: filePath,
lineNumber: lineNumber);
}
}
/// <summary>
/// Appends the audio buffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="participants">The participants.</param>
public async Task AppendAudioBuffer(AudioMediaBuffer buffer, List <IParticipant> participants)
{
if (!_isRunning)
{
await _start();
}
try
{
await _buffer.SendAsync(new SerializableAudioMediaBuffer(buffer, participants), _tokenSource.Token).ConfigureAwait(false);
}
catch (TaskCanceledException e)
{
_buffer?.Complete();
_logger.Error(e, "Cannot enqueue because queuing operation has been cancelled");
}
}
/// <summary>
/// Extension for Task to execute the task in background and log any exception.
/// </summary>
/// <param name="task">Task to execute and capture any exceptions.</param>
/// <param name="logger">Graph logger.</param>
/// <param name="description">Friendly description of the task for debugging purposes.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
public static async Task ForgetAndLogExceptionAsync(this Task task, IGraphLogger logger, string description = null)
{
try
{
await task.ConfigureAwait(false);
}
catch (Exception e)
{
// ignore
logger.Error(e, $"Caught an Exception running the task: {description ?? string.Empty} {e.Message}\n StackTrace: {e.StackTrace}");
}
}
public async Task <HttpResponseMessage> JoinCallAsync([FromBody] JoinCallBody joinCallBody)
{
try
{
var call = await _botService.JoinCallAsync(joinCallBody).ConfigureAwait(false);
var callPath = $"/{HttpRouteConstants.CallRoute.Replace("{callLegId}", call.Id)}";
var callUri = $"{_settings.ServiceCname}{callPath}";
_eventPublisher.Publish("JoinCall", $"Call.id = {call.Id}");
var values = new JoinURLResponse()
{
Call = callUri,
CallId = call.Id,
ScenarioId = call.ScenarioId
};
var serializer = new CommsSerializer(pretty: true);
var json = serializer.SerializeObject(values);
var response = this.Request.CreateResponse(HttpStatusCode.OK);
response.Content = new StringContent(json, Encoding.UTF8, "application/json");
return(response);
}
catch (ServiceException e)
{
HttpResponseMessage response = (int)e.StatusCode >= 300
? this.Request.CreateResponse(e.StatusCode)
: this.Request.CreateResponse(HttpStatusCode.InternalServerError);
if (e.ResponseHeaders != null)
{
foreach (var responseHeader in e.ResponseHeaders)
{
response.Headers.TryAddWithoutValidation(responseHeader.Key, responseHeader.Value);
}
}
response.Content = new StringContent(e.ToString());
return(response);
}
catch (Exception e)
{
_logger.Error(e, $"Received HTTP {this.Request.Method}, {this.Request.RequestUri}");
HttpResponseMessage response = this.Request.CreateResponse(HttpStatusCode.InternalServerError);
response.Content = new StringContent(e.Message);
return(response);
}
}
public async Task <IActionResult> JoinCallAsync([FromBody] JoinCallBody joinCallBody)
{
try
{
var call = await _botService.JoinCallAsync(joinCallBody).ConfigureAwait(false);
var callPath = $"/{HttpRouteConstants.CallRoute.Replace("{callLegId}", call.Id)}";
var callUri = $"{_settings.ServiceCname}{callPath}";
var values = new JoinURLResponse()
{
Call = callUri,
CallId = call.Id,
ScenarioId = call.ScenarioId,
Logs = callUri.Replace("/calls/", "/logs/")
};
var json = JsonConvert.SerializeObject(values);
return(Ok(values));
}
catch (ServiceException e)
{
HttpResponseMessage response = (int)e.StatusCode >= 300
? new HttpResponseMessage(e.StatusCode)
: new HttpResponseMessage(HttpStatusCode.InternalServerError);
if (e.ResponseHeaders != null)
{
foreach (var responseHeader in e.ResponseHeaders)
{
response.Headers.TryAddWithoutValidation(responseHeader.Key, responseHeader.Value);
}
}
response.Content = new StringContent(e.ToString());
return(StatusCode(500, e.ToString()));
}
catch (Exception e)
{
_logger.Error(e, $"Received HTTP {this.Request.Method}, {this.Request.Path.Value}");
return(StatusCode(500, e.Message));
}
}