public IHttpActionResult HealthCheck()
{
HealthCheckResponse response = new HealthCheckResponse();
HealthCheckerContainer container = TrendyolApp.Instance.DataStore.GetData <HealthCheckerContainer>(Constants.HealthCheckerContainerDataKey);
if (container == null || container.HealthCheckers.IsEmpty())
{
return(Ok(response));
}
IHealthCheckerActivator healthCheckerActivator = TrendyolApp.Instance.GetHealthCheckerActivator();
response.Results = new List <HealthCheckResult>();
foreach (HealthChecker checker in container.HealthCheckers)
{
IHealthChecker checkerInstance = healthCheckerActivator.CreateHealthCheckerInstance(checker.HealthCheckerType);
if (checkerInstance == null)
{
throw new ConfigurationErrorsException($"There was a problem while creating healthchecker instance for type:{checker.HealthCheckerType.FullName}. Check if your type implements IHealthChecker interface.");
}
HealthCheckResult result = new HealthCheckResult();
result.Key = checkerInstance.Key;
result.IsCtirical = checkerInstance.IsCritical;
try
{
result.Success = checkerInstance.CheckHealth();
}
catch (Exception ex)
{
Logger.Error(ex);
result.Message = ex.Message;
result.Success = false;
}
response.Results.Add(result);
}
HttpStatusCode statusCode = HttpStatusCode.OK;
if (response.Results.HasElements() && response.Results.Any(r => r.IsCtirical && r.Success == false))
{
statusCode = HttpStatusCode.InternalServerError;
}
return(Content(statusCode, response));
}
public TrendyolWebApiBuilder WithHealthChecker<T>() where T : IHealthChecker
{
HealthCheckerContainer container = _appBuilder.DataStore.GetData<HealthCheckerContainer>(Constants.HealthCheckerContainerDataKey);
if (container == null)
{
container = new HealthCheckerContainer();
}
container.AddHealthChecker(typeof(T));
_appBuilder.DataStore.SetData(Constants.HealthCheckerContainerDataKey, container);
return this;
}
private void RegisterHealthCheckers()
{
HealthCheckerContainer container = _sillycoreAppBuilder.DataStore.Get <HealthCheckerContainer>(Constants.HealthCheckerContainerDataKey);
if (container == null)
{
container = new HealthCheckerContainer();
}
Assembly ass = Assembly.GetEntryAssembly();
foreach (TypeInfo ti in ass.DefinedTypes)
{
if (ti.ImplementedInterfaces.Contains(typeof(IHealthChecker)))
{
container.AddHealthChecker(ti);
_sillycoreAppBuilder.Services.AddTransient(ti);
_sillycoreAppBuilder.DataStore.Set(Constants.HealthCheckerContainerDataKey, container);
}
}
}
public async Task <IActionResult> HealthCheck()
{
using (var scope = _scopeFactory.CreateScope())
{
HealthCheckResponse response = new HealthCheckResponse();
response.DockerImageName = Environment.GetEnvironmentVariable("Sillycore.DockerImageName");
if (SillycoreApp.Instance.DataStore.Get <bool>(Constants.IsShuttingDown))
{
response.AddErrorMessage("Shutting down...");
return(StatusCode(503, response));
}
HealthCheckerContainer container = SillycoreApp.Instance.DataStore.Get <HealthCheckerContainer>(Constants.HealthCheckerContainerDataKey);
if (container != null && container.HealthCheckers.HasElements())
{
response.Results = new List <HealthCheckResult>();
foreach (HealthChecker checker in container.HealthCheckers)
{
IHealthChecker checkerInstance = (IHealthChecker)scope.ServiceProvider.GetService(checker.HealthCheckerType);
if (checkerInstance == null)
{
throw new ApplicationException($"There was a problem while creating healthchecker instance for type:{checker.HealthCheckerType.FullName}. Check if your type implements IHealthChecker interface.");
}
HealthCheckResult result = new HealthCheckResult();
result.Key = checkerInstance.Key;
result.IsCtirical = checkerInstance.IsCritical;
try
{
result.Success = await checkerInstance.CheckHealth();
}
catch (Exception ex)
{
_logger.LogError(ex, $"There was a problem while running healthcheckher:{checker.HealthCheckerType.FullName}");
result.Message = ex.Message;
result.Success = false;
}
response.Results.Add(result);
}
}
HttpStatusCode statusCode = HttpStatusCode.OK;
if (response.Results.HasElements() && response.Results.Any(r => r.IsCtirical && r.Success == false))
{
statusCode = HttpStatusCode.InternalServerError;
}
if (_backgroundJobManager.IsActive)
{
response.BackgroundJobManager = _backgroundJobManager;
if (response.BackgroundJobManager.JobTimers.Any(t => t.Status == BackgroundJobStatus.Failing))
{
statusCode = HttpStatusCode.InternalServerError;
response.AddErrorMessage("At least one of background jobs is failing.");
}
}
return(StatusCode((int)statusCode, response));
}
}
