private BaseIndividualHealthCheckResult IndividualHealthCheck(IHealthCheck healthCheck)
{
var healthCheckName = healthCheck.GetType().Name;
var sw = Stopwatch.StartNew();
var task = Task.Run <BaseIndividualHealthCheckResult>(
() =>
{
try
{
healthCheck.Check();
}
catch (Exception ex)
{
logger.Error($"Health check { healthCheckName} ({ healthCheck.Description}) error.", ex);
return(new FailedIndividualHealthCheckResult(
healthCheckName,
healthCheck.Description,
ex.Message,
healthCheck.CriticalMarking,
sw.Elapsed
));
}
finally
{
sw.Stop();
}
return(new SuccessfulIndividualHealthCheckResult(
healthCheckName,
healthCheck.Description,
healthCheck.CriticalMarking,
sw.Elapsed
));
}
);
var isTaskCompletedInTime = Task.WaitAll(new Task[] { task }, timeout);
if (!isTaskCompletedInTime)
{
logger.Error($"Health check {healthCheckName} ({healthCheck.Description}) timed out.");
return(new FailedIndividualHealthCheckResult(
healthCheckName,
healthCheck.Description,
"Health check timed out.",
healthCheck.CriticalMarking,
sw.Elapsed
));
}
return(task.Result);
}
private IndividualHealthCheckResult CheckIndividualInternal(IHealthCheck healthCheck, string healthCheckName, Stopwatch sw)
{
try
{
healthCheck.Check();
return(new SuccessfulIndividualHealthCheckResult(healthCheckName, healthCheck.Description, sw.Elapsed));
}
catch (Exception ex)
{
var message = string.Format(CultureInfo.CurrentUICulture, "Health check {0} failed: {1}", healthCheckName, ex.Message);
_logException(ex, message);
return(new FailedIndividualHealthCheckResult(healthCheckName, healthCheck.Description, ex.Message, sw.Elapsed));
}
}
public async Task <HealthCheckStatus> Check()
{
var now = DateTimeOffset.Now;
if (_lastStatus == null || (_cacheFailures && _lastStatus.HasFailed) || _lastChecked + _cacheTime < now)
{
_lastStatus = await _healthCheck.Check().ConfigureAwait(false);
_lastChecked = now;
return(_lastStatus);
}
return(_lastStatus);
}
private IndividualHealthCheckResult CheckIndividualInternal(IHealthCheck healthCheck, string healthCheckName, Stopwatch sw)
{
try
{
healthCheck.Check();
return new SuccessfulIndividualHealthCheckResult(healthCheckName, healthCheck.Description, sw.Elapsed);
}
catch (Exception ex)
{
var message = "Health check {0} failed: {1}".FormatWith(healthCheckName, ex.Message);
_logException(ex, message);
return new FailedIndividualHealthCheckResult(healthCheckName, healthCheck.Description, ex.Message, sw.Elapsed);
}
}
private static IList <HealthCheckResult> TryCheck(IHealthCheck check)
{
try { return(check.Check()); }
catch (Exception ex) { return(GetExceptionHealthCheckResult(check, ex)); }
}