public CheckNotification ToBusiness(Entities.CheckNotification checkNotification)
{
return(new CheckNotification
{
CheckNotificationId = checkNotification.CheckNotificationId,
CheckId = checkNotification.CheckId,
CheckResultId = checkNotification.CheckResultId,
Version = checkNotification.Version,
IsHealthy = checkNotification.IsHealthy,
Time = TimeUtilities.LongToDateTimeOffset(checkNotification.Time),
CheckResult = ToBusiness(checkNotification.CheckResult)
});
}
public async Task <CheckNotification> CheckForNotificationAsync(string checkName, CancellationToken token)
{
var checkResultAndHealth = await GetCheckResultAndHealthAsync(checkName, token);
if (checkResultAndHealth == null)
{
// Don't notify when there is no check result to act on.
return(null);
}
var notification = await GetNotificationAsync(checkName, token);
if (notification == null)
{
if (checkResultAndHealth.IsHealthy)
{
// Don't notify when the check is healthy and there is no previous notification.
return(null);
}
notification = new Entities.CheckNotification
{
CheckId = checkResultAndHealth.CheckResult.CheckId,
Version = 0
};
_context.CheckNotifications.Add(notification);
}
else if (notification.IsHealthy == checkResultAndHealth.IsHealthy)
{
// Don't notify the health status is not changing.
return(null);
}
notification.CheckResultId = checkResultAndHealth.CheckResult.CheckResultId;
notification.CheckResult = checkResultAndHealth.CheckResult;
notification.Time = TimeUtilities.DateTimeOffsetToLong(_systemClock.UtcNow);
notification.IsHealthy = checkResultAndHealth.IsHealthy;
notification.Version++;
// Add the notification record
var record = new Entities.CheckNotificationRecord
{
CheckId = notification.CheckId,
CheckResultId = notification.CheckResultId,
Time = notification.Time,
IsHealthy = notification.IsHealthy,
Version = notification.Version,
CheckNotification = notification
};
_context.CheckNotificationRecords.Add(record);
try
{
await _context.SaveChangesAsync();
return(_entityMapper.ToBusiness(notification));
}
catch (DbUpdateConcurrencyException)
{
// This means another caller updated the notification already.
return(null);
}
}
