public async Task RecordAsync(NcMonitor monitor, MonitorResult result)
{
var record = monitorManager.LastOpenedMonitorRecord(monitor.Id);
if (result.IsSuccess)
{
if ((record != null && record.EndDate == null) || monitor.StatusEnum() != MonitorStatus.OK)
{//ukonceni zaznamu
if (record != null)
{
await monitorManager.UpdateEndDateAsync(record, DateTime.Now);
}
await notificator.AddNotifyUpAsync(monitor);//poslani notifikace o tom ze web bezi, staci poslat pouze jendou.
await monitorManager.SetStatusAndResetLastTestCycleIntervalAsync(monitor, MonitorStatus.OK);
}
}
else
{ //nastala chyba
if (record == null || record.EndDate != null || monitor.StatusEnum() != MonitorStatus.Error)
{ //neexistuje zadny zaznam nebo jsou vsechny uzavreny
await monitorManager.SetStatusAndResetLastTestCycleIntervalAsync(monitor, MonitorStatus.Error);
await AddNewRecordAsync(monitor, result);
}
//posilani notifikaci se provadi stale dokud je monitor v chybovem stavu
await notificator.AddNotifyDownAsync(monitor);
}
}
private async Task AddNewRecordAsync(NcMonitor monitor, MonitorResult result)
{
await monitorManager.AddNewRecordAsync(new NcMonitorRecord
{
StartDate = DateTime.Now,
Monitor = monitor,
Note = GetLogMessage(result),
});
}
private MonitorResult CheckStatusCode(string url, string statusCodeNum, int timeout)
{
try
{
if (int.TryParse(statusCodeNum, out int statusInt))
{
HttpStatusCode statusCode = GetStatusCode(url, timeout);
if ((int)statusCode == statusInt)
{
return(MonitorResult.Success);
}
else
{
return(MonitorResult.Failed($"Url '{url}' response with status code '{(int)statusCode} - {statusCode}', but required '{statusCodeNum}'."));
}
}
return(MonitorResult.Failed($"Status code '{statusCodeNum}' is not valid."));
}
catch (Exception ex)
{
if (ex is WebException)
{
switch ((ex as WebException).Status)
{
case WebExceptionStatus.ConnectFailure:
return(MonitorResult.Failed("Connection failed.", ex));
case WebExceptionStatus.NameResolutionFailure:
return(MonitorResult.Failed("Name reosulution failed.", ex));
case WebExceptionStatus.Timeout:
return(MonitorResult.Failed("Timeout expiration.", ex));
case WebExceptionStatus.ProtocolError:
if (ex.Message == "The remote server returned an error: (401) unauthorized.")
{
return(MonitorResult.Failed("Anauthorized content (401).", ex));
}
return(MonitorResult.Failed("Protocol error.", ex));
default:
return(MonitorResult.Failed("General WebException error.", ex));
}
}
return(MonitorResult.Failed(ex));
}
}
private MonitorResult CheckMonitor(NcMonitor monitor)
{
if (monitor.Enabled)
{
int timeout = (int)monitor.Timeout.TotalMilliseconds;
switch (monitor.VerificationEnum())
{
case MonitorVerification.Keyword:
return(FindKeywordOnWebsite(monitor.Url, monitor.VerificationValue, timeout));
case MonitorVerification.StatusCode:
return(CheckStatusCode(monitor.Url, monitor.VerificationValue, timeout));
}
return(MonitorResult.Failed($"{nameof(monitor.VerificationType)} '{monitor.VerificationTypeId} - {monitor.VerificationType}' not found."));
}
return(MonitorResult.Success);
}
private MonitorResult FindKeywordOnWebsite(string url, string keyword, int timeout)
{
try
{
if (string.IsNullOrEmpty(keyword))
{
throw new MonitoringException($"{nameof(keyword)} cant be empty.");
}
if (DownloadContent(url, timeout).Contains(keyword))
{
return(MonitorResult.Success);
}
return(MonitorResult.Failed($"Keyword '{keyword}' not found on url '{url}'."));
}
catch (Exception ex)
{
return(MonitorResult.Failed($"Error on checking keyword '{keyword}' on url '{url}'.", ex));
}
}
private string GetLogMessage(MonitorResult result)
{
if (result.Exception != null)
{//nastala neocekavana chyba
logger.LogError(result.Exception, result.Message);
}
if (string.IsNullOrWhiteSpace(result.Message))
{
if (result.Exception != null)
{
return("Unexpected error of exception " + result.Exception.GetType());
}
else
{
return("General error");
}
}
else
{
return(result.Message);
}
}