/// <inheritdoc />
public async Task NotifyAsync(INotificationMetadata notificationMetadata, CancellationToken cancellationToken = default)
{
if (notificationMetadata == null)
{
throw new ArgumentNullException(nameof(notificationMetadata));
}
var metadataType = notificationMetadata.GetType();
if (!_buildersPerType.TryGetValue(metadataType, out var builders))
{
throw new InvalidOperationException($"Notification builder for notification {metadataType} not found");
}
// build notification for all channels
var notificationsMap = new Dictionary <string, List <INotification> >();
foreach (var(channelType, builder) in builders)
{
if (!_channels.ContainsKey(channelType))
{
throw new InvalidOperationException($"No channels for type {channelType}. Notification would not be build");
}
var notifications = await builder.BuildNotificationsAsync(notificationMetadata, cancellationToken);
if (notifications.Count == 0)
{
_logger.LogWarning($"No notification have been built for {metadataType} for channel {channelType}");
continue;
}
if (!notificationsMap.ContainsKey(channelType))
{
notificationsMap[channelType] = new List <INotification>();
}
for (var i = 0; i < notifications.Count; i++)
{
var notification = notifications[i];
if (notification != null)
{
notificationsMap[channelType].Add(notification);
}
}
}
// create sending task for each notification
var sendingTasks = new List <Task>(notificationsMap.Count);
foreach (var(channelType, notifications) in notificationsMap)
{
var channel = _channels[channelType];
for (var i = 0; i < notifications.Count; i++)
{
var notification = notifications[i];
sendingTasks.Add(channel.SendNotificationAsync(notification, cancellationToken));
}
}
// await all
await Task.WhenAll(sendingTasks);
}
/// <inheritdoc />
public void NotifyAndForgot(INotificationMetadata notificationMetadata)
{
if (notificationMetadata == null)
{
throw new ArgumentNullException(nameof(notificationMetadata));
}
NotifyAsync(notificationMetadata).ContinueWith(task =>
{
if (task.IsFaulted)
{
_logger.LogError(task.Exception, $"Notification task faulted (NotificationType=\"{notificationMetadata.GetType()}\")");
}
if (task.IsCanceled)
{
_logger.LogError($"Notification task was canceled (NotificationType=\"{notificationMetadata.GetType()}\")");
}
});
}